* [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces
@ 2021-03-11 2:50 Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 1/8] configure gdb build system for supporting btrace on arm processors Zied Guermazi
` (7 more replies)
0 siblings, 8 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch set adds support for branch tracing in GDB on arm platforms
using coresight etm traces
Branch tracing offers instructions and functions histories as well as
execution record and replay (forwards and reverse debugging)
this patch set was tested using the gdb.btrace testsuite on ARMv7 and ARMv8
cortex A processors running linux operating system with coresight drivers.
test results of gdb.btrace testsuite on ARMv8, variation unix
# of expected passes 595
# of unexpected failures 1
# of unsupported tests 1
test results of gdb.btrace testsuite on ARMv8 variation native-gdbserver
# of expected passes 582
# of unexpected failures 4
# of unsupported tests 2
test results of gdb.btrace testsuite on ARMv7, variation unix
test results of gdb.btrace testsuite on ARMv7 variation native-gdbserver
known limitations:
for arm v7 only
- some registers needed for breakpoint address calculation in forwards
executions may be missing.
for arm v7 and arm v8
- sometimes trace buffers are not flushed properly or flushed in
the buffer of a different thread. this was observed
in test scripts only.
- sometimes, in non-stop mode, while executing "stepi n" for two threads
in parallel, a thread is hitting breakpoints intended for stepping
the other one.
Gdb recognizes that it is intended for the second thread,
but decreases the step counter. leading to a stepping less than "n"
times.
patches are:
Zied Guermazi (8):
configure gdb build system for supporting btrace on arm processors
add btrace coresight related commands
start/stop btrace with coresight etm and parse etm buffer. nat
independant
start/stop btrace with coresight etm and collect etm buffer on linux
os
fix issue: gdb hangs in the command following a commad returning with
TARGET_WAITKIND_NO_HISTORY
add support for coresight btrace via remote protocol
adapt btrace testcases for arm target
document btrace support for arm targets using coresight etm traces
gdb/ChangeLog | 139 +++
gdb/Makefile.in | 5 +-
gdb/NEWS | 30 +
gdb/aarch64-linux-nat.c | 68 ++
gdb/arm-linux-nat.c | 68 ++
gdb/btrace.c | 992 +++++++++++++++++-
gdb/btrace.h | 25 +
gdb/config.in | 3 +
gdb/configure | 545 ++++++++++
gdb/configure.nat | 4 +-
gdb/doc/ChangeLog | 5 +
gdb/doc/gdb.texinfo | 115 +-
gdb/features/btrace-conf.dtd | 10 +-
gdb/features/btrace.dtd | 38 +-
gdb/infrun.c | 3 +-
gdb/nat/linux-btrace.c | 457 +++++++-
gdb/nat/linux-btrace.h | 19 +
gdb/record-btrace.c | 136 ++-
gdb/record.c | 2 +
gdb/remote.c | 66 +-
.../gdb.btrace/aarch64-instruction_history.S | 31 +
.../gdb.btrace/aarch64-record_goto.S | 400 +++++++
.../gdb.btrace/aarch64-tailcall-only.S | 517 +++++++++
gdb/testsuite/gdb.btrace/aarch64-tailcall.S | 409 ++++++++
.../gdb.btrace/arm-instruction_history.S | 31 +
gdb/testsuite/gdb.btrace/arm-record_goto.S | 433 ++++++++
gdb/testsuite/gdb.btrace/arm-tailcall-only.S | 504 +++++++++
gdb/testsuite/gdb.btrace/arm-tailcall.S | 391 +++++++
gdb/testsuite/gdb.btrace/buffer-size.exp | 15 +-
gdb/testsuite/gdb.btrace/delta.exp | 10 +
.../gdb.btrace/instruction_history.exp | 107 +-
gdb/testsuite/gdb.btrace/non-stop.exp | 60 +-
gdb/testsuite/gdb.btrace/record_goto.exp | 241 ++++-
gdb/testsuite/gdb.btrace/stepi.exp | 95 +-
gdb/testsuite/gdb.btrace/tailcall-only.exp | 8 +
gdb/testsuite/gdb.btrace/tailcall.exp | 46 +-
...on_history.S => x86-instruction_history.S} | 0
gdb/testsuite/lib/gdb.exp | 2 +-
gdb/top.c | 10 +-
gdbserver/ChangeLog | 16 +
gdbserver/config.in | 3 +
gdbserver/configure | 545 ++++++++++
gdbserver/configure.srv | 4 +
gdbserver/linux-low.cc | 103 +-
gdbserver/server.cc | 34 +-
gdbsupport/ChangeLog | 29 +
gdbsupport/Makefile.in | 3 +
gdbsupport/btrace-common.cc | 47 +
gdbsupport/btrace-common.h | 173 ++-
gdbsupport/common.m4 | 39 +
gdbsupport/config.in | 3 +
gdbsupport/configure | 545 ++++++++++
52 files changed, 7427 insertions(+), 157 deletions(-)
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-instruction_history.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-record_goto.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-tailcall-only.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-tailcall.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-instruction_history.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-record_goto.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-tailcall-only.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-tailcall.S
rename gdb/testsuite/gdb.btrace/{instruction_history.S => x86-instruction_history.S} (100%)
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 1/8] configure gdb build system for supporting btrace on arm processors
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 2/8] add btrace coresight related commands Zied Guermazi
` (6 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch adds the possibility to build GDB with support for branch tracing
using ARM CoreSight traces
new flag is --with-arm-cs
gdb/ChangeLog
* Makefile.in LIBOPENCSD_C_API: Regenerated..
* config.in LIBOPENCSD_C_API: undefine it if
libopenocsd library is available.
* configure: Regenerated.
* configure.nat: add nat/linux-btrace.o to the build
for aarch64 and arm
* top.c (print_gdb_configuration): add --with-arm-cs
or --without-arm-cs according to the configuration.
gdbserver/ChangeLog
* gdbserver/configure: Regenerated.
* gdbserver/config.in: Regenerated.
gdbsupport/ChangeLog
* gdbsupport/common.m4: check --with-arm-cs configuration
flag, perf_event and opencsd_c_api to set compilation flags.
* gdbsupport/config.in: Regenerated.
* gdbsupport/Makefile.in: Regenerated.
* gdbsupport/configure: Regenerated.
---
gdb/ChangeLog | 11 +
gdb/Makefile.in | 5 +-
gdb/config.in | 3 +
gdb/configure | 545 +++++++++++++++++++++++++++++++++++++++++
gdb/configure.nat | 4 +-
gdb/top.c | 10 +-
gdbserver/ChangeLog | 4 +
gdbserver/config.in | 3 +
gdbserver/configure | 545 +++++++++++++++++++++++++++++++++++++++++
gdbsupport/ChangeLog | 6 +
gdbsupport/Makefile.in | 3 +
gdbsupport/common.m4 | 39 +++
gdbsupport/config.in | 3 +
gdbsupport/configure | 545 +++++++++++++++++++++++++++++++++++++++++
14 files changed, 1722 insertions(+), 4 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2ca7d3c6a05..7178c30affb 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,14 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * Makefile.in LIBOPENCSD_C_API: set the flag.
+ * config.in LIBOPENCSD_C_API: undefine it if
+ libopenocsd library is available.
+ * configure: Regenerated.
+ * configure.nat: add nat/linux-btrace.o to the build
+ for aarch64 and arm
+ * top.c (print_gdb_configuration): add --with-arm-cs
+ or --without-arm-cs according to the configuration.
+
2021-02-24 Tom de Vries <tdevries@suse.de>
PR symtab/27336
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index ae89b85eb56..9120f4fa958 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -203,6 +203,9 @@ LIBXXHASH = @LIBXXHASH@
# Where is libipt? This will be empty if libipt was not available.
LIBIPT = @LIBIPT@
+#where is libopencsd? this will be empty if libopencsd was not available
+LIBOPENCSD_C_API = @LIBOPENCSD_C_API@
+
# Where is libgmp?
LIBGMP = @LIBGMP@
@@ -636,7 +639,7 @@ CLIBS = $(SIM) $(READLINE) $(OPCODES) $(LIBCTF) $(BFD) $(ZLIB) \
$(LIBSUPPORT) $(INTL) $(LIBIBERTY) $(LIBDECNUMBER) \
$(XM_CLIBS) $(GDBTKLIBS) \
@LIBS@ @GUILE_LIBS@ @PYTHON_LIBS@ \
- $(LIBEXPAT) $(LIBLZMA) $(LIBBABELTRACE) $(LIBIPT) \
+ $(LIBEXPAT) $(LIBLZMA) $(LIBBABELTRACE) $(LIBIPT) $(LIBOPENCSD_C_API) \
$(WIN32LIBS) $(LIBGNU) $(LIBGNU_EXTRA_LIBS) $(LIBICONV) \
$(LIBMPFR) $(LIBGMP) $(SRCHIGH_LIBS) $(LIBXXHASH) $(PTHREAD_LIBS) \
$(DEBUGINFOD_LIBS)
diff --git a/gdb/config.in b/gdb/config.in
index 14a77c661d5..8777899dd06 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -247,6 +247,9 @@
/* Define if you have the mpfr library. */
#undef HAVE_LIBMPFR
+/* Define if you have the opencsd_c_api library. */
+#undef HAVE_LIBOPENCSD_C_API
+
/* Define to 1 if you have the <libunwind-ia64.h> header file. */
#undef HAVE_LIBUNWIND_IA64_H
diff --git a/gdb/configure b/gdb/configure
index 51b4d1921c5..b073f66a7a8 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -705,6 +705,9 @@ SYSTEM_GDBINIT
TARGET_SYSTEM_ROOT
CONFIG_LDFLAGS
RDYNAMIC
+LTLIBOPENCSD_C_API
+LIBOPENCSD_C_API
+HAVE_LIBOPENCSD_C_API
LTLIBIPT
LIBIPT
HAVE_LIBIPT
@@ -911,6 +914,9 @@ enable_source_highlight
with_intel_pt
with_libipt_prefix
with_libipt_type
+with_arm_cs
+with_libopencsd_c_api_prefix
+with_libopencsd_c_api_type
with_included_regex
with_sysroot
with_system_gdbinit
@@ -1661,6 +1667,11 @@ Optional Packages:
--with-libipt-prefix[=DIR] search for libipt in DIR/include and DIR/lib
--without-libipt-prefix don't search for libipt in includedir and libdir
--with-libipt-type=TYPE type of library to search for (auto/static/shared)
+ --with-arm-cs include ARM CoreSight Processor Trace support
+ (auto/yes/no)
+ --with-libopencsd_c_api-prefix[=DIR] search for libopencsd_c_api in DIR/include and DIR/lib
+ --without-libopencsd_c_api-prefix don't search for libopencsd_c_api in includedir and libdir
+ --with-libopencsd_c_api-type=TYPE type of library to search for (auto/static/shared)
--without-included-regex
don't use included regex; this is the default on
systems with version 2 of the GNU C library (use
@@ -15317,6 +15328,540 @@ fi
fi
fi
+ # ARM CoreSight trace #
+
+
+# Check whether --with-arm_cs was given.
+if test "${with_arm_cs+set}" = set; then :
+ withval=$with_arm_cs;
+else
+ with_arm_cs=auto
+fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use ARM CoreSight Processor Trace " >&5
+$as_echo_n "checking whether to use ARM CoreSight Processor Trace ... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_arm_cs" >&5
+$as_echo "$with_arm_cs" >&6; }
+
+ if test "${with_arm_cs}" = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&2;}
+ HAVE_LIBOPENCSD=no
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+ #include <linux/perf_event.h>
+ #ifndef PERF_ATTR_SIZE_VER5
+ # error
+ #endif
+
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ perf_event=yes
+else
+ perf_event=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+ if test "$perf_event" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "linux/perf_event.h missing or too old" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ fi
+
+
+
+
+
+
+
+
+
+ use_additional=yes
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+
+# Check whether --with-libopencsd_c_api-prefix was given.
+if test "${with_libopencsd_c_api_prefix+set}" = set; then :
+ withval=$with_libopencsd_c_api_prefix;
+ if test "X$withval" = "Xno"; then
+ use_additional=no
+ else
+ if test "X$withval" = "X"; then
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ else
+ additional_includedir="$withval/include"
+ additional_libdir="$withval/lib"
+ fi
+ fi
+
+fi
+
+
+# Check whether --with-libopencsd_c_api-type was given.
+if test "${with_libopencsd_c_api_type+set}" = set; then :
+ withval=$with_libopencsd_c_api_type; with_libopencsd_c_api_type=$withval
+else
+ with_libopencsd_c_api_type=auto
+fi
+
+ lib_type=`eval echo \$with_libopencsd_c_api_type`
+
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ INCOPENCSD_C_API=
+ rpathdirs=
+ ltrpathdirs=
+ names_already_handled=
+ names_next_round='opencsd_c_api '
+ while test -n "$names_next_round"; do
+ names_this_round="$names_next_round"
+ names_next_round=
+ for name in $names_this_round; do
+ already_handled=
+ for n in $names_already_handled; do
+ if test "$n" = "$name"; then
+ already_handled=yes
+ break
+ fi
+ done
+ if test -z "$already_handled"; then
+ names_already_handled="$names_already_handled $name"
+ uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+ eval value=\"\$HAVE_LIB$uppername\"
+ if test -n "$value"; then
+ if test "$value" = yes; then
+ eval value=\"\$LIB$uppername\"
+ test -z "$value" || LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$value"
+ eval value=\"\$LTLIB$uppername\"
+ test -z "$value" || LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$value"
+ else
+ :
+ fi
+ else
+ found_dir=
+ found_la=
+ found_so=
+ found_a=
+ if test $use_additional = yes; then
+ if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$additional_libdir"
+ found_so="$additional_libdir/lib$name.$shlibext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$additional_libdir/lib$name.$libext"; then
+ found_dir="$additional_libdir"
+ found_a="$additional_libdir/lib$name.$libext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ fi
+ fi
+ fi
+ if test "X$found_dir" = "X"; then
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$dir"
+ found_so="$dir/lib$name.$shlibext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$dir/lib$name.$libext"; then
+ found_dir="$dir"
+ found_a="$dir/lib$name.$libext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ if test "X$found_dir" != "X"; then
+ break
+ fi
+ done
+ fi
+ if test "X$found_dir" != "X"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ if test "X$found_so" != "X"; then
+ if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $found_dir"
+ fi
+ if test "$hardcode_direct" = yes; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $found_dir"
+ fi
+ else
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir"
+ fi
+ if test "$hardcode_minus_L" != no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ fi
+ fi
+ fi
+ fi
+ else
+ if test "X$found_a" != "X"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_a"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ fi
+ fi
+ additional_includedir=
+ case "$found_dir" in
+ */lib | */lib/)
+ basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+ additional_includedir="$basedir/include"
+ ;;
+ esac
+ if test "X$additional_includedir" != "X"; then
+ if test "X$additional_includedir" != "X/usr/include"; then
+ haveit=
+ if test "X$additional_includedir" = "X/usr/local/include"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ for x in $CPPFLAGS $INCOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-I$additional_includedir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_includedir"; then
+ INCOPENCSD_C_API="${INCOPENCSD_C_API}${INCOPENCSD_C_API:+ }-I$additional_includedir"
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -n "$found_la"; then
+ save_libdir="$libdir"
+ case "$found_la" in
+ */* | *\\*) . "$found_la" ;;
+ *) . "./$found_la" ;;
+ esac
+ libdir="$save_libdir"
+ for dep in $dependency_libs; do
+ case "$dep" in
+ -L*)
+ additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+ if test "X$additional_libdir" != "X/usr/lib"; then
+ haveit=
+ if test "X$additional_libdir" = "X/usr/local/lib"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ haveit=
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ fi
+ fi
+ ;;
+ -R*)
+ dir=`echo "X$dep" | sed -e 's/^X-R//'`
+ if test "$enable_rpath" != no; then
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $dir"
+ fi
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $dir"
+ fi
+ fi
+ ;;
+ -l*)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+ ;;
+ *.la)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+ ;;
+ *)
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$dep"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$dep"
+ ;;
+ esac
+ done
+ fi
+ else
+ if test "x$lib_type" = "xauto" || test "x$lib_type" = "xshared"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l$name"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ fi
+ fi
+ fi
+ fi
+ done
+ done
+ if test "X$rpathdirs" != "X"; then
+ if test -n "$hardcode_libdir_separator"; then
+ alldirs=
+ for found_dir in $rpathdirs; do
+ alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+ done
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ else
+ for found_dir in $rpathdirs; do
+ acl_save_libdir="$libdir"
+ libdir="$found_dir"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ done
+ fi
+ fi
+ if test "X$ltrpathdirs" != "X"; then
+ for found_dir in $ltrpathdirs; do
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-R$found_dir"
+ done
+ fi
+
+
+ ac_save_CPPFLAGS="$CPPFLAGS"
+
+ for element in $INCOPENCSD_C_API; do
+ haveit=
+ for x in $CPPFLAGS; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+ fi
+ done
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libopencsd_c_api" >&5
+$as_echo_n "checking for libopencsd_c_api... " >&6; }
+if ${ac_cv_libopencsd_c_api+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ ac_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include "opencsd/c_api/opencsd_c_api.h"
+int
+main ()
+{
+ocsd_get_version();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_libopencsd_c_api=yes
+else
+ ac_cv_libopencsd_c_api=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LIBS="$ac_save_LIBS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libopencsd_c_api" >&5
+$as_echo "$ac_cv_libopencsd_c_api" >&6; }
+ if test "$ac_cv_libopencsd_c_api" = yes; then
+ HAVE_LIBOPENCSD_C_API=yes
+
+$as_echo "#define HAVE_LIBOPENCSD_C_API 1" >>confdefs.h
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link with libopencsd_c_api" >&5
+$as_echo_n "checking how to link with libopencsd_c_api... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBOPENCSD_C_API" >&5
+$as_echo "$LIBOPENCSD_C_API" >&6; }
+ else
+ HAVE_LIBOPENCSD_C_API=no
+ CPPFLAGS="$ac_save_CPPFLAGS"
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ fi
+
+
+
+
+
+
+ if test "$HAVE_LIBOPENCSD_C_API" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "libopencsd_c_api is missing or unusable" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ else
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ fi
+ fi
+
+
$as_echo "#define _STRUCTURED_PROC 1" >>confdefs.h
diff --git a/gdb/configure.nat b/gdb/configure.nat
index 286975966da..c17b6697b05 100644
--- a/gdb/configure.nat
+++ b/gdb/configure.nat
@@ -235,7 +235,7 @@ case ${gdb_host} in
# Host: AArch64 based machine running GNU/Linux
NATDEPFILES="${NATDEPFILES} aarch64-linux-nat.o \
aarch32-linux-nat.o nat/aarch64-linux-hw-point.o \
- nat/aarch64-linux.o \
+ nat/aarch64-linux.o nat/linux-btrace.o \
nat/aarch64-sve-linux-ptrace.o"
;;
arc)
@@ -245,7 +245,7 @@ case ${gdb_host} in
arm)
# Host: ARM based machine running GNU/Linux
NATDEPFILES="${NATDEPFILES} arm-linux-nat.o \
- aarch32-linux-nat.o"
+ aarch32-linux-nat.o nat/linux-btrace.o"
;;
i386)
# Host: Intel 386 running GNU/Linux.
diff --git a/gdb/top.c b/gdb/top.c
index 3be95079654..a5aab3202c5 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -1526,7 +1526,15 @@ This GDB was configured as follows:\n\
--without-intel-pt\n\
"));
#endif
-
+#if HAVE_LIBOPENCSD_C_API
+ fprintf_filtered (stream, _("\
+ --with-arm-cs\n\
+"));
+#else
+ fprintf_filtered (stream, _("\
+ --without-arm-cs\n\
+"));
+#endif
#if HAVE_LIBMPFR
fprintf_filtered (stream, _("\
--with-mpfr\n\
diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index 0e713cc6abb..bafdc7685c3 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,3 +1,7 @@
+2021-02-01 Zied Guermazi <zied.guermazi@trande.de>
+
+ * gdbserver/configure: Regenerated.
+
2021-02-23 Simon Marchi <simon.marchi@polymtl.ca>
* linux-low.cc (linux_process_target::filter_event): Return
diff --git a/gdbserver/config.in b/gdbserver/config.in
index 99391b4acff..7871c6faa32 100644
--- a/gdbserver/config.in
+++ b/gdbserver/config.in
@@ -143,6 +143,9 @@
/* Define if you have the ipt library. */
#undef HAVE_LIBIPT
+/* Define if you have the opencsd_c_api library. */
+#undef HAVE_LIBOPENCSD_C_API
+
/* Define if the target supports branch tracing. */
#undef HAVE_LINUX_BTRACE
diff --git a/gdbserver/configure b/gdbserver/configure
index 0db0ad3f4fb..e57cfebfb5c 100755
--- a/gdbserver/configure
+++ b/gdbserver/configure
@@ -656,6 +656,9 @@ am__leading_dot
host_noncanonical
target_noncanonical
WIN32APILIBS
+LTLIBOPENCSD_C_API
+LIBOPENCSD_C_API
+HAVE_LIBOPENCSD_C_API
LTLIBIPT
LIBIPT
HAVE_LIBIPT
@@ -751,6 +754,9 @@ with_gnu_ld
enable_rpath
with_libipt_prefix
with_libipt_type
+with_arm_cs
+with_libopencsd_c_api_prefix
+with_libopencsd_c_api_type
enable_unit_tests
with_ust
with_ust_include
@@ -1415,6 +1421,11 @@ Optional Packages:
--with-libipt-prefix[=DIR] search for libipt in DIR/include and DIR/lib
--without-libipt-prefix don't search for libipt in includedir and libdir
--with-libipt-type=TYPE type of library to search for (auto/static/shared)
+ --with-arm-cs include ARM CoreSight Processor Trace support
+ (auto/yes/no)
+ --with-libopencsd_c_api-prefix[=DIR] search for libopencsd_c_api in DIR/include and DIR/lib
+ --without-libopencsd_c_api-prefix don't search for libopencsd_c_api in includedir and libdir
+ --with-libopencsd_c_api-type=TYPE type of library to search for (auto/static/shared)
--with-ust=PATH Specify prefix directory for the installed UST package
Equivalent to --with-ust-include=PATH/include
plus --with-ust-lib=PATH/lib
@@ -8623,6 +8634,540 @@ fi
fi
fi
+ # ARM CoreSight trace #
+
+
+# Check whether --with-arm_cs was given.
+if test "${with_arm_cs+set}" = set; then :
+ withval=$with_arm_cs;
+else
+ with_arm_cs=auto
+fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use ARM CoreSight Processor Trace " >&5
+$as_echo_n "checking whether to use ARM CoreSight Processor Trace ... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_arm_cs" >&5
+$as_echo "$with_arm_cs" >&6; }
+
+ if test "${with_arm_cs}" = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&2;}
+ HAVE_LIBOPENCSD=no
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+ #include <linux/perf_event.h>
+ #ifndef PERF_ATTR_SIZE_VER5
+ # error
+ #endif
+
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ perf_event=yes
+else
+ perf_event=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+ if test "$perf_event" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "linux/perf_event.h missing or too old" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ fi
+
+
+
+
+
+
+
+
+
+ use_additional=yes
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+
+# Check whether --with-libopencsd_c_api-prefix was given.
+if test "${with_libopencsd_c_api_prefix+set}" = set; then :
+ withval=$with_libopencsd_c_api_prefix;
+ if test "X$withval" = "Xno"; then
+ use_additional=no
+ else
+ if test "X$withval" = "X"; then
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ else
+ additional_includedir="$withval/include"
+ additional_libdir="$withval/lib"
+ fi
+ fi
+
+fi
+
+
+# Check whether --with-libopencsd_c_api-type was given.
+if test "${with_libopencsd_c_api_type+set}" = set; then :
+ withval=$with_libopencsd_c_api_type; with_libopencsd_c_api_type=$withval
+else
+ with_libopencsd_c_api_type=auto
+fi
+
+ lib_type=`eval echo \$with_libopencsd_c_api_type`
+
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ INCOPENCSD_C_API=
+ rpathdirs=
+ ltrpathdirs=
+ names_already_handled=
+ names_next_round='opencsd_c_api '
+ while test -n "$names_next_round"; do
+ names_this_round="$names_next_round"
+ names_next_round=
+ for name in $names_this_round; do
+ already_handled=
+ for n in $names_already_handled; do
+ if test "$n" = "$name"; then
+ already_handled=yes
+ break
+ fi
+ done
+ if test -z "$already_handled"; then
+ names_already_handled="$names_already_handled $name"
+ uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+ eval value=\"\$HAVE_LIB$uppername\"
+ if test -n "$value"; then
+ if test "$value" = yes; then
+ eval value=\"\$LIB$uppername\"
+ test -z "$value" || LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$value"
+ eval value=\"\$LTLIB$uppername\"
+ test -z "$value" || LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$value"
+ else
+ :
+ fi
+ else
+ found_dir=
+ found_la=
+ found_so=
+ found_a=
+ if test $use_additional = yes; then
+ if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$additional_libdir"
+ found_so="$additional_libdir/lib$name.$shlibext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$additional_libdir/lib$name.$libext"; then
+ found_dir="$additional_libdir"
+ found_a="$additional_libdir/lib$name.$libext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ fi
+ fi
+ fi
+ if test "X$found_dir" = "X"; then
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$dir"
+ found_so="$dir/lib$name.$shlibext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$dir/lib$name.$libext"; then
+ found_dir="$dir"
+ found_a="$dir/lib$name.$libext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ if test "X$found_dir" != "X"; then
+ break
+ fi
+ done
+ fi
+ if test "X$found_dir" != "X"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ if test "X$found_so" != "X"; then
+ if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $found_dir"
+ fi
+ if test "$hardcode_direct" = yes; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $found_dir"
+ fi
+ else
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir"
+ fi
+ if test "$hardcode_minus_L" != no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ fi
+ fi
+ fi
+ fi
+ else
+ if test "X$found_a" != "X"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_a"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ fi
+ fi
+ additional_includedir=
+ case "$found_dir" in
+ */lib | */lib/)
+ basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+ additional_includedir="$basedir/include"
+ ;;
+ esac
+ if test "X$additional_includedir" != "X"; then
+ if test "X$additional_includedir" != "X/usr/include"; then
+ haveit=
+ if test "X$additional_includedir" = "X/usr/local/include"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ for x in $CPPFLAGS $INCOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-I$additional_includedir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_includedir"; then
+ INCOPENCSD_C_API="${INCOPENCSD_C_API}${INCOPENCSD_C_API:+ }-I$additional_includedir"
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -n "$found_la"; then
+ save_libdir="$libdir"
+ case "$found_la" in
+ */* | *\\*) . "$found_la" ;;
+ *) . "./$found_la" ;;
+ esac
+ libdir="$save_libdir"
+ for dep in $dependency_libs; do
+ case "$dep" in
+ -L*)
+ additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+ if test "X$additional_libdir" != "X/usr/lib"; then
+ haveit=
+ if test "X$additional_libdir" = "X/usr/local/lib"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ haveit=
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ fi
+ fi
+ ;;
+ -R*)
+ dir=`echo "X$dep" | sed -e 's/^X-R//'`
+ if test "$enable_rpath" != no; then
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $dir"
+ fi
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $dir"
+ fi
+ fi
+ ;;
+ -l*)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+ ;;
+ *.la)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+ ;;
+ *)
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$dep"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$dep"
+ ;;
+ esac
+ done
+ fi
+ else
+ if test "x$lib_type" = "xauto" || test "x$lib_type" = "xshared"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l$name"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ fi
+ fi
+ fi
+ fi
+ done
+ done
+ if test "X$rpathdirs" != "X"; then
+ if test -n "$hardcode_libdir_separator"; then
+ alldirs=
+ for found_dir in $rpathdirs; do
+ alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+ done
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ else
+ for found_dir in $rpathdirs; do
+ acl_save_libdir="$libdir"
+ libdir="$found_dir"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ done
+ fi
+ fi
+ if test "X$ltrpathdirs" != "X"; then
+ for found_dir in $ltrpathdirs; do
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-R$found_dir"
+ done
+ fi
+
+
+ ac_save_CPPFLAGS="$CPPFLAGS"
+
+ for element in $INCOPENCSD_C_API; do
+ haveit=
+ for x in $CPPFLAGS; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+ fi
+ done
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libopencsd_c_api" >&5
+$as_echo_n "checking for libopencsd_c_api... " >&6; }
+if ${ac_cv_libopencsd_c_api+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ ac_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include "opencsd/c_api/opencsd_c_api.h"
+int
+main ()
+{
+ocsd_get_version();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_libopencsd_c_api=yes
+else
+ ac_cv_libopencsd_c_api=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LIBS="$ac_save_LIBS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libopencsd_c_api" >&5
+$as_echo "$ac_cv_libopencsd_c_api" >&6; }
+ if test "$ac_cv_libopencsd_c_api" = yes; then
+ HAVE_LIBOPENCSD_C_API=yes
+
+$as_echo "#define HAVE_LIBOPENCSD_C_API 1" >>confdefs.h
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link with libopencsd_c_api" >&5
+$as_echo_n "checking how to link with libopencsd_c_api... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBOPENCSD_C_API" >&5
+$as_echo "$LIBOPENCSD_C_API" >&6; }
+ else
+ HAVE_LIBOPENCSD_C_API=no
+ CPPFLAGS="$ac_save_CPPFLAGS"
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ fi
+
+
+
+
+
+
+ if test "$HAVE_LIBOPENCSD_C_API" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "libopencsd_c_api is missing or unusable" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ else
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ fi
+ fi
+
+
$as_echo "#define _STRUCTURED_PROC 1" >>confdefs.h
diff --git a/gdbsupport/ChangeLog b/gdbsupport/ChangeLog
index c8fa9e73148..f27b57c2fa9 100644
--- a/gdbsupport/ChangeLog
+++ b/gdbsupport/ChangeLog
@@ -1,3 +1,9 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * gdbsupport/common.m4: check --with-arm-cs configuration
+ flag, perf_event and opencsd_c_api to set compilation flags.
+ * gdbsupport/configure: Regenerated
+
2021-02-05 Paul E. Murphy <murphy@linux.ibm.com>
* common-defs.h (ATTRIBUTE_PRINTF): Rename
diff --git a/gdbsupport/Makefile.in b/gdbsupport/Makefile.in
index c47b2004996..6f49cf46b00 100644
--- a/gdbsupport/Makefile.in
+++ b/gdbsupport/Makefile.in
@@ -250,6 +250,7 @@ GMSGFMT = @GMSGFMT@
GREP = @GREP@
HAVE_CXX11 = @HAVE_CXX11@
HAVE_LIBIPT = @HAVE_LIBIPT@
+HAVE_LIBOPENCSD_C_API = @HAVE_LIBOPENCSD_C_API@
INCINTL = @INCINTL@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
@@ -263,9 +264,11 @@ LIBINTL = @LIBINTL@
LIBINTL_DEP = @LIBINTL_DEP@
LIBIPT = @LIBIPT@
LIBOBJS = @LIBOBJS@
+LIBOPENCSD_C_API = @LIBOPENCSD_C_API@
LIBS = @LIBS@
LTLIBIPT = @LTLIBIPT@
LTLIBOBJS = @LTLIBOBJS@
+LTLIBOPENCSD_C_API = @LTLIBOPENCSD_C_API@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
diff --git a/gdbsupport/common.m4 b/gdbsupport/common.m4
index 3ed95dabc85..4a5f82a61b2 100644
--- a/gdbsupport/common.m4
+++ b/gdbsupport/common.m4
@@ -186,6 +186,45 @@ AC_DEFUN([GDB_AC_COMMON], [
fi
fi
+ # ARM CoreSight trace #
+
+ AC_ARG_WITH(arm_cs,
+ AS_HELP_STRING([--with-arm-cs], [include ARM CoreSight Processor Trace support (auto/yes/no)]),
+ [], [with_arm_cs=auto])
+ AC_MSG_CHECKING([whether to use ARM CoreSight Processor Trace ])
+ AC_MSG_RESULT([$with_arm_cs])
+
+ if test "${with_arm_cs}" = no; then
+ AC_MSG_WARN([ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable.])
+ HAVE_LIBOPENCSD=no
+ else
+ AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
+ #include <linux/perf_event.h>
+ #ifndef PERF_ATTR_SIZE_VER5
+ # error
+ #endif
+ ]])], [perf_event=yes], [perf_event=no])
+ if test "$perf_event" != yes; then
+ if test "$with_arm_cs" = yes; then
+ AC_MSG_ERROR([linux/perf_event.h missing or too old])
+ else
+ AC_MSG_WARN([linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable.])
+ fi
+ fi
+
+ AC_LIB_HAVE_LINKFLAGS([opencsd_c_api], [], [#include "opencsd/c_api/opencsd_c_api.h"], [ocsd_get_version();])
+ if test "$HAVE_LIBOPENCSD_C_API" != yes; then
+ if test "$with_arm_cs" = yes; then
+ AC_MSG_ERROR([libopencsd_c_api is missing or unusable])
+ else
+ AC_MSG_WARN([libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable.])
+ fi
+ else
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ fi
+ fi
+
+
BFD_SYS_PROCFS_H
if test "$ac_cv_header_sys_procfs_h" = yes; then
BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
diff --git a/gdbsupport/config.in b/gdbsupport/config.in
index ecc6fa559f7..a4ff12e772a 100644
--- a/gdbsupport/config.in
+++ b/gdbsupport/config.in
@@ -121,6 +121,9 @@
/* Define if you have the ipt library. */
#undef HAVE_LIBIPT
+/* Define if you have the opencsd_c_api library. */
+#undef HAVE_LIBOPENCSD_C_API
+
/* Define to 1 if you have the <linux/elf.h> header file. */
#undef HAVE_LINUX_ELF_H
diff --git a/gdbsupport/configure b/gdbsupport/configure
index 9c5e59c5f10..939be79b824 100755
--- a/gdbsupport/configure
+++ b/gdbsupport/configure
@@ -628,6 +628,9 @@ WERROR_CFLAGS
WARN_CFLAGS
SELFTEST_FALSE
SELFTEST_TRUE
+LTLIBOPENCSD_C_API
+LIBOPENCSD_C_API
+HAVE_LIBOPENCSD_C_API
LTLIBIPT
LIBIPT
HAVE_LIBIPT
@@ -772,6 +775,9 @@ with_gnu_ld
enable_rpath
with_libipt_prefix
with_libipt_type
+with_arm_cs
+with_libopencsd_c_api_prefix
+with_libopencsd_c_api_type
enable_unit_tests
enable_werror
enable_build_warnings
@@ -1436,6 +1442,11 @@ Optional Packages:
--with-libipt-prefix[=DIR] search for libipt in DIR/include and DIR/lib
--without-libipt-prefix don't search for libipt in includedir and libdir
--with-libipt-type=TYPE type of library to search for (auto/static/shared)
+ --with-arm-cs include ARM CoreSight Processor Trace support
+ (auto/yes/no)
+ --with-libopencsd_c_api-prefix[=DIR] search for libopencsd_c_api in DIR/include and DIR/lib
+ --without-libopencsd_c_api-prefix don't search for libopencsd_c_api in includedir and libdir
+ --with-libopencsd_c_api-type=TYPE type of library to search for (auto/static/shared)
Some influential environment variables:
CC C compiler command
@@ -9637,6 +9648,540 @@ fi
fi
fi
+ # ARM CoreSight trace #
+
+
+# Check whether --with-arm_cs was given.
+if test "${with_arm_cs+set}" = set; then :
+ withval=$with_arm_cs;
+else
+ with_arm_cs=auto
+fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use ARM CoreSight Processor Trace " >&5
+$as_echo_n "checking whether to use ARM CoreSight Processor Trace ... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_arm_cs" >&5
+$as_echo "$with_arm_cs" >&6; }
+
+ if test "${with_arm_cs}" = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: ARM CoreSight Processor Trace support disabled; CoreSight Tracing will be unavailable." >&2;}
+ HAVE_LIBOPENCSD=no
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+ #include <linux/perf_event.h>
+ #ifndef PERF_ATTR_SIZE_VER5
+ # error
+ #endif
+
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ perf_event=yes
+else
+ perf_event=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+ if test "$perf_event" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "linux/perf_event.h missing or too old" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: linux/perf_event.h missing or too old; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ fi
+
+
+
+
+
+
+
+
+
+ use_additional=yes
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+
+# Check whether --with-libopencsd_c_api-prefix was given.
+if test "${with_libopencsd_c_api_prefix+set}" = set; then :
+ withval=$with_libopencsd_c_api_prefix;
+ if test "X$withval" = "Xno"; then
+ use_additional=no
+ else
+ if test "X$withval" = "X"; then
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ else
+ additional_includedir="$withval/include"
+ additional_libdir="$withval/lib"
+ fi
+ fi
+
+fi
+
+
+# Check whether --with-libopencsd_c_api-type was given.
+if test "${with_libopencsd_c_api_type+set}" = set; then :
+ withval=$with_libopencsd_c_api_type; with_libopencsd_c_api_type=$withval
+else
+ with_libopencsd_c_api_type=auto
+fi
+
+ lib_type=`eval echo \$with_libopencsd_c_api_type`
+
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ INCOPENCSD_C_API=
+ rpathdirs=
+ ltrpathdirs=
+ names_already_handled=
+ names_next_round='opencsd_c_api '
+ while test -n "$names_next_round"; do
+ names_this_round="$names_next_round"
+ names_next_round=
+ for name in $names_this_round; do
+ already_handled=
+ for n in $names_already_handled; do
+ if test "$n" = "$name"; then
+ already_handled=yes
+ break
+ fi
+ done
+ if test -z "$already_handled"; then
+ names_already_handled="$names_already_handled $name"
+ uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+ eval value=\"\$HAVE_LIB$uppername\"
+ if test -n "$value"; then
+ if test "$value" = yes; then
+ eval value=\"\$LIB$uppername\"
+ test -z "$value" || LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$value"
+ eval value=\"\$LTLIB$uppername\"
+ test -z "$value" || LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$value"
+ else
+ :
+ fi
+ else
+ found_dir=
+ found_la=
+ found_so=
+ found_a=
+ if test $use_additional = yes; then
+ if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$additional_libdir"
+ found_so="$additional_libdir/lib$name.$shlibext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$additional_libdir/lib$name.$libext"; then
+ found_dir="$additional_libdir"
+ found_a="$additional_libdir/lib$name.$libext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ fi
+ fi
+ fi
+ if test "X$found_dir" = "X"; then
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext" && test x$lib_type != xstatic; then
+ found_dir="$dir"
+ found_so="$dir/lib$name.$shlibext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ elif test x$lib_type != xshared; then
+ if test -f "$dir/lib$name.$libext"; then
+ found_dir="$dir"
+ found_a="$dir/lib$name.$libext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ if test "X$found_dir" != "X"; then
+ break
+ fi
+ done
+ fi
+ if test "X$found_dir" != "X"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ if test "X$found_so" != "X"; then
+ if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $found_dir"
+ fi
+ if test "$hardcode_direct" = yes; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $found_dir"
+ fi
+ else
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir"
+ fi
+ if test "$hardcode_minus_L" != no; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_so"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ fi
+ fi
+ fi
+ fi
+ else
+ if test "X$found_a" != "X"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$found_a"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$found_dir -l$name"
+ fi
+ fi
+ additional_includedir=
+ case "$found_dir" in
+ */lib | */lib/)
+ basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+ additional_includedir="$basedir/include"
+ ;;
+ esac
+ if test "X$additional_includedir" != "X"; then
+ if test "X$additional_includedir" != "X/usr/include"; then
+ haveit=
+ if test "X$additional_includedir" = "X/usr/local/include"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ for x in $CPPFLAGS $INCOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-I$additional_includedir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_includedir"; then
+ INCOPENCSD_C_API="${INCOPENCSD_C_API}${INCOPENCSD_C_API:+ }-I$additional_includedir"
+ fi
+ fi
+ fi
+ fi
+ fi
+ if test -n "$found_la"; then
+ save_libdir="$libdir"
+ case "$found_la" in
+ */* | *\\*) . "$found_la" ;;
+ *) . "./$found_la" ;;
+ esac
+ libdir="$save_libdir"
+ for dep in $dependency_libs; do
+ case "$dep" in
+ -L*)
+ additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+ if test "X$additional_libdir" != "X/usr/lib"; then
+ haveit=
+ if test "X$additional_libdir" = "X/usr/local/lib"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ haveit=
+ for x in $LDFLAGS $LIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ haveit=
+ for x in $LDFLAGS $LTLIBOPENCSD_C_API; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-L$additional_libdir"
+ fi
+ fi
+ fi
+ fi
+ ;;
+ -R*)
+ dir=`echo "X$dep" | sed -e 's/^X-R//'`
+ if test "$enable_rpath" != no; then
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $dir"
+ fi
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $dir"
+ fi
+ fi
+ ;;
+ -l*)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+ ;;
+ *.la)
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+ ;;
+ *)
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$dep"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }$dep"
+ ;;
+ esac
+ done
+ fi
+ else
+ if test "x$lib_type" = "xauto" || test "x$lib_type" = "xshared"; then
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l$name"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l$name"
+ else
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-l:lib$name.$libext"
+ fi
+ fi
+ fi
+ fi
+ done
+ done
+ if test "X$rpathdirs" != "X"; then
+ if test -n "$hardcode_libdir_separator"; then
+ alldirs=
+ for found_dir in $rpathdirs; do
+ alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+ done
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ else
+ for found_dir in $rpathdirs; do
+ acl_save_libdir="$libdir"
+ libdir="$found_dir"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIBOPENCSD_C_API="${LIBOPENCSD_C_API}${LIBOPENCSD_C_API:+ }$flag"
+ done
+ fi
+ fi
+ if test "X$ltrpathdirs" != "X"; then
+ for found_dir in $ltrpathdirs; do
+ LTLIBOPENCSD_C_API="${LTLIBOPENCSD_C_API}${LTLIBOPENCSD_C_API:+ }-R$found_dir"
+ done
+ fi
+
+
+ ac_save_CPPFLAGS="$CPPFLAGS"
+
+ for element in $INCOPENCSD_C_API; do
+ haveit=
+ for x in $CPPFLAGS; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+ fi
+ done
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libopencsd_c_api" >&5
+$as_echo_n "checking for libopencsd_c_api... " >&6; }
+if ${ac_cv_libopencsd_c_api+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ ac_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include "opencsd/c_api/opencsd_c_api.h"
+int
+main ()
+{
+ocsd_get_version();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_libopencsd_c_api=yes
+else
+ ac_cv_libopencsd_c_api=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LIBS="$ac_save_LIBS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libopencsd_c_api" >&5
+$as_echo "$ac_cv_libopencsd_c_api" >&6; }
+ if test "$ac_cv_libopencsd_c_api" = yes; then
+ HAVE_LIBOPENCSD_C_API=yes
+
+$as_echo "#define HAVE_LIBOPENCSD_C_API 1" >>confdefs.h
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to link with libopencsd_c_api" >&5
+$as_echo_n "checking how to link with libopencsd_c_api... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBOPENCSD_C_API" >&5
+$as_echo "$LIBOPENCSD_C_API" >&6; }
+ else
+ HAVE_LIBOPENCSD_C_API=no
+ CPPFLAGS="$ac_save_CPPFLAGS"
+ LIBOPENCSD_C_API=
+ LTLIBOPENCSD_C_API=
+ fi
+
+
+
+
+
+
+ if test "$HAVE_LIBOPENCSD_C_API" != yes; then
+ if test "$with_arm_cs" = yes; then
+ as_fn_error $? "libopencsd_c_api is missing or unusable" "$LINENO" 5
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&5
+$as_echo "$as_me: WARNING: libopencsd_c_api is missing or unusable; CoreSight Tracing will be unavailable." >&2;}
+ fi
+ else
+ LIBS="$LIBS $LIBOPENCSD_C_API"
+ fi
+ fi
+
+
$as_echo "#define _STRUCTURED_PROC 1" >>confdefs.h
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 2/8] add btrace coresight related commands
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 1/8] configure gdb build system for supporting btrace on arm processors Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 3/8] start/stop btrace with coresight etm and parse etm buffer. nat independant Zied Guermazi
` (5 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch extends the commands needed for using branch tracing
with ARM CoreSight traces.
Those commands are:
set record btrace etm sink
set record btrace etm buffer-size
record btrace etm
gdb/ChangeLog
* record-btrace.c (record_btrace_print_etm_conf): New.
(record_btrace_print_conf): handle BTRACE_FORMAT_ETM.
(cmd_record_btrace_etm_start): New.
(cmd_record_btrace_start): handle starting ETM tracing.
(cmd_show_record_btrace_cpu): extend for ARM cpus.
(show_record_etm_buffer_size_value): New.
(_initialize_record_btrace): add commands for ETM traces.
(record_start): add starting ETM traces.
gdbsupport/ChangeLog
* gdbsupport/btrace-common.h (btrace_format): add BTRACE_FORMAT_ETM
to the enum.
(btrace_cpu_vendor): add CV_ARM to the enum.
(btrace_config_etm): new struct.
(btrace_config): add btrace_config_etm etm.
* gdbsupport/btrace-common.cc (btrace_format_string): add BTRACE_FORMAT_ETM.
(btrace_format_short_string): add BTRACE_FORMAT_ETM.
---
gdb/ChangeLog | 11 ++++
gdb/record-btrace.c | 118 +++++++++++++++++++++++++++++++++++-
gdb/record.c | 2 +
gdbsupport/ChangeLog | 10 +++
gdbsupport/btrace-common.cc | 7 +++
gdbsupport/btrace-common.h | 28 ++++++++-
6 files changed, 172 insertions(+), 4 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7178c30affb..a63fdfa1911 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,16 @@
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+ * record-btrace.c (record_btrace_print_etm_conf): New.
+ (record_btrace_print_conf): handle BTRACE_FORMAT_ETM.
+ (cmd_record_btrace_etm_start): New.
+ (cmd_record_btrace_start): handle starting ETM tracing.
+ (cmd_show_record_btrace_cpu): extend for ARM cpus.
+ (show_record_etm_buffer_size_value): New.
+ (_initialize_record_btrace): add commands for ETM traces.
+ * record.c (record_start): add starting ETM traces.
+
+2021-02-02 Zied Guermazi <zied.guermazi@trande.de>
+
* Makefile.in LIBOPENCSD_C_API: set the flag.
* config.in LIBOPENCSD_C_API: undefine it if
libopenocsd library is available.
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index d9cc7a3b6d8..4d6495d440d 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -201,6 +201,10 @@ static struct cmd_list_element *show_record_btrace_bts_cmdlist;
static struct cmd_list_element *set_record_btrace_pt_cmdlist;
static struct cmd_list_element *show_record_btrace_pt_cmdlist;
+/* Command lists for "set/show record btrace etm". */
+static struct cmd_list_element *set_record_btrace_etm_cmdlist;
+static struct cmd_list_element *show_record_btrace_etm_cmdlist;
+
/* Command list for "set record btrace cpu". */
static struct cmd_list_element *set_record_btrace_cpu_cmdlist;
@@ -525,6 +529,22 @@ record_btrace_print_pt_conf (const struct btrace_config_pt *conf)
}
}
+/* Print an ARM Processor Trace configuration. */
+
+static void
+record_btrace_print_etm_conf (const struct btrace_config_etm *conf)
+{
+ unsigned int size;
+
+ size = conf->size;
+ if (size > 0)
+ {
+ const char *suffix;
+ suffix = record_btrace_adjust_size (&size);
+ printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix);
+ }
+}
+
/* Print a branch tracing configuration. */
static void
@@ -545,6 +565,10 @@ record_btrace_print_conf (const struct btrace_config *conf)
case BTRACE_FORMAT_PT:
record_btrace_print_pt_conf (&conf->pt);
return;
+
+ case BTRACE_FORMAT_ETM:
+ record_btrace_print_etm_conf (&conf->etm);
+ return;
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
@@ -2675,7 +2699,7 @@ record_btrace_target::stop (ptid_t ptid)
tp->btrace.flags |= BTHR_STOP;
}
}
- }
+}
/* The can_execute_reverse method of target record-btrace. */
@@ -2936,6 +2960,27 @@ cmd_record_btrace_pt_start (const char *args, int from_tty)
}
}
+/* Start recording in arm CoreSight ETM Trace format. */
+
+static void
+cmd_record_btrace_etm_start (const char *args, int from_tty)
+{
+ if (args != nullptr && *args != 0)
+ error (_("Invalid argument."));
+
+ record_btrace_conf.format = BTRACE_FORMAT_ETM;
+
+ try
+ {
+ execute_command ("target record-btrace", from_tty);
+ }
+ catch (const gdb_exception &exception)
+ {
+ record_btrace_conf.format = BTRACE_FORMAT_NONE;
+ throw;
+ }
+}
+
/* Alias for "target record". */
static void
@@ -2950,10 +2995,18 @@ cmd_record_btrace_start (const char *args, int from_tty)
{
execute_command ("target record-btrace", from_tty);
}
- catch (const gdb_exception &exception)
+ catch (const gdb_exception &exception_pt)
{
record_btrace_conf.format = BTRACE_FORMAT_BTS;
+ try
+ {
+ execute_command ("target record-btrace", from_tty);
+ }
+ catch (const gdb_exception &exception_bts)
+ {
+ record_btrace_conf.format = BTRACE_FORMAT_ETM;
+
try
{
execute_command ("target record-btrace", from_tty);
@@ -2964,8 +3017,10 @@ cmd_record_btrace_start (const char *args, int from_tty)
throw;
}
}
+ }
}
+
/* The "show record btrace replay-memory-access" command. */
static void
@@ -3074,6 +3129,11 @@ cmd_show_record_btrace_cpu (const char *args, int from_tty)
record_btrace_cpu.model,
record_btrace_cpu.stepping);
return;
+
+ case CV_ARM:
+ printf_unfiltered ("btrace cpu is 'ARM'.\n");
+
+ return;
}
}
@@ -3102,6 +3162,17 @@ show_record_pt_buffer_size_value (struct ui_file *file, int from_tty,
value);
}
+/* The "record etm buffer-size" show value function. */
+
+static void
+show_record_etm_buffer_size_value (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ fprintf_filtered (file, _("The record/replay etm buffer size is %s.\n"),
+ value);
+}
+
/* Initialize btrace commands. */
void _initialize_record_btrace ();
@@ -3165,6 +3236,13 @@ When set to \"none\", errata workarounds are disabled."),
"set record btrace cpu ", 1,
&set_record_btrace_cmdlist);
+ add_cmd ("etm", class_obscure, cmd_record_btrace_etm_start,
+ _("\
+Start branch trace recording in ARM CoreSight ETM Trace format.\n\n\
+This format may not be available on all processors."),
+ &record_btrace_cmdlist);
+ add_alias_cmd ("etm", "btrace etm", class_obscure, 1, &record_cmdlist);
+
add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\
Automatically determine the cpu to be used for trace decode."),
&set_record_btrace_cpu_cmdlist);
@@ -3226,6 +3304,41 @@ to see the actual buffer size."), NULL, show_record_pt_buffer_size_value,
&set_record_btrace_pt_cmdlist,
&show_record_btrace_pt_cmdlist);
+ add_basic_prefix_cmd ("etm", class_support,
+ _("Set record btrace etm options."),
+ &set_record_btrace_etm_cmdlist,
+ "set record btrace etm ", 0, &set_record_btrace_cmdlist);
+
+ add_show_prefix_cmd ("etm", class_support,
+ _("Show record btrace etm options."),
+ &show_record_btrace_etm_cmdlist,
+ "show record btrace etm ", 0, &show_record_btrace_cmdlist);
+
+ add_setshow_uinteger_cmd ("buffer-size", no_class,
+ &record_btrace_conf.etm.size,
+ _("Set the record/replay etm buffer size."),
+ _("Show the record/replay etm buffer size."), _("\
+Bigger buffers allow longer recording but also take more time to process \
+the recorded execution.\n\
+The actual buffer size may differ from the requested size. Use \"info record\" \
+to see the actual buffer size."), NULL, show_record_etm_buffer_size_value,
+ &set_record_btrace_etm_cmdlist,
+ &show_record_btrace_etm_cmdlist);
+
+ add_setshow_string_cmd ("sink", no_class,
+ &record_btrace_conf.etm.sink,
+ _("Set the record/replay ETM sink device."),
+ _("Show the record/replay ETM sink device."),
+ _("\
+Sink device is the device that intercepts ETM traces and collects or routes \
+them out of the SoC.\n\
+The list of available sinks on linux targets correspond to the files in \
+the directory \"/sys/bus/event_source/devices/cs_etm/sinks/\".\n\
+value \"default\" reset it to default sink"),
+ NULL, NULL,
+ &set_record_btrace_etm_cmdlist,
+ &show_record_btrace_etm_cmdlist);
+
add_target (record_btrace_target_info, record_btrace_target_open);
bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL,
@@ -3233,4 +3346,5 @@ to see the actual buffer size."), NULL, show_record_pt_buffer_size_value,
record_btrace_conf.bts.size = 64 * 1024;
record_btrace_conf.pt.size = 16 * 1024;
+ record_btrace_conf.etm.size = 8 * 1024;
}
diff --git a/gdb/record.c b/gdb/record.c
index cd541b56f43..43e5bb0874f 100644
--- a/gdb/record.c
+++ b/gdb/record.c
@@ -118,6 +118,8 @@ record_start (const char *method, const char *format, int from_tty)
execute_command_to_string ("record btrace bts", from_tty, false);
else if (strcmp (format, "pt") == 0)
execute_command_to_string ("record btrace pt", from_tty, false);
+ else if (strcmp (format, "etm") == 0)
+ execute_command_to_string ("record btrace etm", from_tty, false);
else
error (_("Invalid format."));
}
diff --git a/gdbsupport/ChangeLog b/gdbsupport/ChangeLog
index f27b57c2fa9..ed4708b7028 100644
--- a/gdbsupport/ChangeLog
+++ b/gdbsupport/ChangeLog
@@ -1,3 +1,13 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * btrace-common.h (btrace_format): add BTRACE_FORMAT_ETM
+ to the enum.
+ (btrace_cpu_vendor): add CV_ARM to the enum.
+ (btrace_config_etm): new struct.
+ (btrace_config): add btrace_config_etm etm.
+ * btrace-common.cc (btrace_format_string): add BTRACE_FORMAT_ETM.
+ (btrace_format_short_string): add BTRACE_FORMAT_ETM.
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* gdbsupport/common.m4: check --with-arm-cs configuration
diff --git a/gdbsupport/btrace-common.cc b/gdbsupport/btrace-common.cc
index 4f9ef855e74..461f769ed51 100644
--- a/gdbsupport/btrace-common.cc
+++ b/gdbsupport/btrace-common.cc
@@ -36,6 +36,9 @@ btrace_format_string (enum btrace_format format)
case BTRACE_FORMAT_PT:
return _("Intel Processor Trace");
+
+ case BTRACE_FORMAT_ETM:
+ return _("ARM Processor CoreSight ETM Trace");
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format"));
@@ -56,6 +59,10 @@ btrace_format_short_string (enum btrace_format format)
case BTRACE_FORMAT_PT:
return "pt";
+
+ case BTRACE_FORMAT_ETM:
+ return "etm";
+
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format"));
diff --git a/gdbsupport/btrace-common.h b/gdbsupport/btrace-common.h
index 26d26ec957f..4ac658b9946 100644
--- a/gdbsupport/btrace-common.h
+++ b/gdbsupport/btrace-common.h
@@ -63,7 +63,10 @@ enum btrace_format
BTRACE_FORMAT_BTS,
/* Branch trace is in Intel Processor Trace format. */
- BTRACE_FORMAT_PT
+ BTRACE_FORMAT_PT,
+
+ /* Branch trace is ARM CoreSight ETM format. */
+ BTRACE_FORMAT_ETM
};
/* An enumeration of cpu vendors. */
@@ -77,7 +80,10 @@ enum btrace_cpu_vendor
CV_INTEL,
/* AMD. */
- CV_AMD
+ CV_AMD,
+
+ /* ARM. */
+ CV_ARM
};
/* A cpu identifier. */
@@ -119,6 +125,20 @@ struct btrace_config_pt
unsigned int size;
};
+/* An ARM CoreSight ETM Trace configuration. */
+
+struct btrace_config_etm
+{
+ /* The size of the branch trace buffer in bytes.
+
+ This is unsigned int and not size_t since it is registered as
+ control variable for "set record btrace etm buffer-size". */
+ unsigned int size;
+
+ /* The sink used to collect the traces. */
+ char *sink;
+};
+
/* A branch tracing configuration.
This describes the requested configuration as well as the actually
@@ -136,6 +156,10 @@ struct btrace_config
/* The Intel Processor Trace format configuration. */
struct btrace_config_pt pt;
+
+ /* The ARM CoreSight ETM Trace configuration. */
+ struct btrace_config_etm etm;
+
};
/* Branch trace in BTS format. */
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 3/8] start/stop btrace with coresight etm and parse etm buffer. nat independant
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 1/8] configure gdb build system for supporting btrace on arm processors Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 2/8] add btrace coresight related commands Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 4/8] start/stop btrace with coresight etm and collect etm buffer on linux os Zied Guermazi
` (4 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch extend branch tracing by adding the functions needed
to collect parameters for decoding ETM traces and decoding them.
gdb/ChangeLog
* btrace.c (ftrace_remove_last_insn): New.
(cs_etm_get_etmv3_config): New.
(cs_etm_get_etmv4_config): New.
(cs_etm_update_btrace_with_inst_range): New.
(cs_etm_update_btrace_with_exception): New.
(cs_etm_update_btrace_with_trace_on): New.
(cs_etm_trace_element_callback): New.
(cs_etm_create_decoder): New.
(cs_etm_free_decoder): New.
(btrace_etm_readmem_callback): New.
(cs_etm_add_mem_access_callback): New.
(cs_etm_process_data_block): New.
(btrace_print_all): New.
(btrace_compute_ftrace_etm): New.
(btrace_compute_ftrace_1): add handling of CoreSight traces.
(btrace_enable): add error message if ETM unavailable.
(btrace_stitch_trace): add handling of CoreSight traces.
(maint_info_btrace_cmd): add handling of CoreSight trace format.
* btrace.h (record_btrace_reg_entry): new.
(btrace_insn): add a vector of record_btrace_reg_entry.
* record-btrace.c (record_btrace_target::fetch_registers): fetch
registers from insn->registers when available
gdbsupport/ChangeLog
* btrace-common.h (cs_etmv3_trace_params): New
(cs_etmv4_trace_params): New.
(cs_etm_trace_params): New.
(cs_etm_decoder_params): New
(btrace_data_etm_config): New.
(btrace_data_etm): New.
(btrace_data): add a btrace_data_etm.
* btrace-common.cc (btrace_data::fini): handle CoreSight traces.
(btrace_data::empty): handle CoreSight traces.
(btrace_data_append): handle CoreSight traces.
---
gdb/ChangeLog | 27 +-
gdb/btrace.c | 621 +++++++++++++++++++++++++++++++++++-
gdb/btrace.h | 25 ++
gdb/record-btrace.c | 20 +-
gdbsupport/ChangeLog | 13 +
gdbsupport/btrace-common.cc | 42 ++-
gdbsupport/btrace-common.h | 147 ++++++++-
7 files changed, 886 insertions(+), 9 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a63fdfa1911..4453a3e8185 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,28 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * btrace.c (ftrace_remove_last_insn): New.
+ (cs_etm_get_etmv3_config): New.
+ (cs_etm_get_etmv4_config): New.
+ (cs_etm_update_btrace_with_inst_range): New.
+ (cs_etm_update_btrace_with_exception): New.
+ (cs_etm_update_btrace_with_trace_on): New.
+ (cs_etm_trace_element_callback): New.
+ (cs_etm_create_decoder): New.
+ (cs_etm_free_decoder): New.
+ (btrace_etm_readmem_callback): New.
+ (cs_etm_add_mem_access_callback): New.
+ (cs_etm_process_data_block): New.
+ (btrace_print_all): New.
+ (btrace_compute_ftrace_etm): New.
+ (btrace_compute_ftrace_1): add handling of CoreSight traces.
+ (btrace_enable): add error message if ETM unavailable.
+ (btrace_stitch_trace): add handling of CoreSight traces.
+ (maint_info_btrace_cmd): add handling of CoreSight trace format.
+ * btrace.h (record_btrace_reg_entry): new.
+ (btrace_insn): add a vector of record_btrace_reg_entry.
+ * record-btrace.c (record_btrace_target::fetch_registers): fetch
+ registers from insn->registers when available
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* record-btrace.c (record_btrace_print_etm_conf): New.
@@ -9,7 +34,7 @@
(_initialize_record_btrace): add commands for ETM traces.
* record.c (record_start): add starting ETM traces.
-2021-02-02 Zied Guermazi <zied.guermazi@trande.de>
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* Makefile.in LIBOPENCSD_C_API: set the flag.
* config.in LIBOPENCSD_C_API: undefine it if
diff --git a/gdb/btrace.c b/gdb/btrace.c
index c697f37f46c..4d1bd96379e 100644
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -42,6 +42,7 @@
#include <inttypes.h>
#include <ctype.h>
#include <algorithm>
+#include "arch/arm.h"
/* Command lists for btrace maintenance commands. */
static struct cmd_list_element *maint_btrace_cmdlist;
@@ -227,6 +228,24 @@ ftrace_function_switched (const struct btrace_function *bfun,
return 0;
}
+#if defined (HAVE_LIBOPENCSD_C_API)
+
+/* Set a record_btrace_reg_entry. */
+
+static void
+btrace_reg_set (struct record_btrace_reg_entry *reg,
+ const struct regcache *regcache, int regnum,
+ const gdb_byte *value)
+{
+ struct gdbarch *gdbarch = regcache->arch ();
+
+ reg->num = regnum;
+ reg->len = register_size (gdbarch, regnum);
+ memcpy (reg->buffer, value, reg->len);
+}
+
+#endif /* defined (HAVE_LIBOPENCSD_C_API) */
+
/* Allocate and initialize a new branch trace function segment at the end of
the trace.
BTINFO is the branch trace information for the current thread.
@@ -257,6 +276,8 @@ ftrace_new_function (struct btrace_thread_info *btinfo,
}
btinfo->functions.emplace_back (mfun, fun, number, insn_offset, level);
+ ftrace_debug (&btinfo->functions.back (), "new function");
+
return &btinfo->functions.back ();
}
@@ -671,6 +692,36 @@ ftrace_update_insns (struct btrace_function *bfun, const btrace_insn &insn)
ftrace_debug (bfun, "update insn");
}
+#if defined (HAVE_LIBOPENCSD_C_API)
+ /* Remove last instruction from BFUN's list.
+
+ This function is not generic and is granted to work properly
+ only if the same removed instruction will be added later. */
+
+static void
+ftrace_remove_last_insn (struct btrace_thread_info *btinfo)
+{
+ /* If we didn't have a function, we return. */
+ if (btinfo->functions.empty ())
+ return;
+
+ struct btrace_function *bfun;
+ bfun = &btinfo->functions.back ();
+ /* If we had a gap before, we return. */
+ if (bfun->errcode != 0)
+ return;
+
+ if (!bfun->insn.empty ())
+ bfun->insn.pop_back ();
+ else
+ {
+ /* A valid function must have at least one insn. */
+ internal_error (__FILE__, __LINE__,
+ _("Attempt to remove last instruction from an empty function"));
+ }
+}
+#endif /* defined (HAVE_LIBOPENCSD_C_API) */
+
/* Classify the instruction at PC. */
static enum btrace_insn_class
@@ -1193,7 +1244,7 @@ pt_btrace_insn_flags (const struct pt_insn &insn)
static btrace_insn
pt_btrace_insn (const struct pt_insn &insn)
{
- return {(CORE_ADDR) insn.ip, (gdb_byte) insn.size,
+ return {(CORE_ADDR) insn.ip, (gdb_byte) insn.size,{},
pt_reclassify_insn (insn.iclass),
pt_btrace_insn_flags (insn)};
}
@@ -1502,6 +1553,557 @@ btrace_compute_ftrace_pt (struct thread_info *tp,
#endif /* defined (HAVE_LIBIPT) */
+#if defined (HAVE_LIBOPENCSD_C_API)
+
+/* This structure holds the status and the context for decoding ETM traces.
+It is also used in the ETM trace element callback to get the context. */
+struct cs_etm_decoder
+{
+ /* The tree representing CoreSight architecture in the SoC. */
+ dcd_tree_handle_t dcd_tree;
+
+ /* Callback function to allow the decoder to access program memory. */
+ Fn_MemAcc_CB mem_access;
+
+ /* thread_info of traced thread. */
+ struct thread_info *t_info;
+
+ /* returned value of previously processed block. */
+ ocsd_datapath_resp_t prev_return;
+
+ /* ARM architecture version of associated core. */
+ ocsd_arch_version_t arch_version;
+
+ /* list of gaps in the execution record. */
+ std::vector<unsigned int> &gaps;
+};
+
+/* fills a ocsd_etmv3_cfg from a cs_etm_trace_params. */
+
+static void
+cs_etm_get_etmv3_config (const struct cs_etm_trace_params *params,
+ ocsd_etmv3_cfg *config)
+{
+ config->reg_idr = params->etmv3.reg_idr;
+ config->reg_ctrl = params->etmv3.reg_ctrl;
+ config->reg_ccer = params->etmv3.reg_ccer;
+ config->reg_trc_id = params->etmv3.reg_trc_id;
+ config->arch_ver = (ocsd_arch_version_t)params->arch_ver;
+ config->core_prof = (ocsd_core_profile_t)params->core_profile;
+}
+
+/* fills a ocsd_etmv4_cfg from a cs_etm_trace_params. */
+
+static void
+cs_etm_get_etmv4_config (const struct cs_etm_trace_params *params,
+ ocsd_etmv4_cfg *config)
+{
+ config->reg_configr = params->etmv4.reg_configr;
+ config->reg_traceidr = params->etmv4.reg_traceidr;
+ config->reg_idr0 = params->etmv4.reg_idr0;
+ config->reg_idr1 = params->etmv4.reg_idr1;
+ config->reg_idr2 = params->etmv4.reg_idr2;
+ config->reg_idr8 = params->etmv4.reg_idr8;
+ config->reg_idr9 = 0;
+ config->reg_idr10 = 0;
+ config->reg_idr11 = 0;
+ config->reg_idr12 = 0;
+ config->reg_idr13 = 0;
+ config->arch_ver = (ocsd_arch_version_t)params->arch_ver;
+ config->core_prof = (ocsd_core_profile_t)params->core_profile;
+}
+
+/* Update btrace in the case of an instruction range. */
+
+static void
+cs_etm_update_btrace_with_inst_range (const void *context,
+ const ocsd_generic_trace_elem *elem)
+{
+ gdb_assert (elem->elem_type == OCSD_GEN_TRC_ELEM_INSTR_RANGE);
+
+ struct cs_etm_decoder *etm_decoder;
+ etm_decoder = (struct cs_etm_decoder *) context;
+ if (etm_decoder->t_info == nullptr)
+ return;
+
+ struct thread_info *tp;
+ tp = etm_decoder->t_info;
+
+ struct btrace_thread_info *btinfo;
+ btinfo = &tp->btrace;
+
+ struct gdbarch *gdbarch;
+ gdbarch = target_gdbarch ();
+
+ struct btrace_insn insn;
+ CORE_ADDR pc;
+ int size;
+ pc = elem->st_addr;
+ for (int i = 0; i< elem->num_instr_range; i++)
+ {
+ insn.pc = pc;
+ try
+ {
+ size = gdb_insn_length (gdbarch, pc);
+ }
+ catch (const gdb_exception_error &err)
+ {
+ error (_("Failed to get the size of the instruction."));
+ }
+
+ struct btrace_function *bfun;
+ bfun = ftrace_update_function (btinfo, pc);
+ insn.iclass=BTRACE_INSN_OTHER;
+ insn.size = size;
+ if (etm_decoder->arch_version == ARCH_V7)
+ {
+ unsigned int cpsr;
+ switch (elem->isa)
+ {
+ case ocsd_isa_arm:
+ cpsr = 0;
+ break;
+
+ case ocsd_isa_thumb2:
+ cpsr = 0x20;
+ break;
+
+ case ocsd_isa_tee:
+ cpsr = 0x1000020;
+ break;
+
+ case ocsd_isa_jazelle:
+ cpsr = 0x1000000;
+ break;
+
+ default:
+ cpsr = 0;
+ }
+ struct record_btrace_reg_entry reg;
+ btrace_reg_set (®, get_thread_regcache (tp),
+ ARM_PS_REGNUM, (gdb_byte *)&cpsr);
+ insn.registers.push_back (reg);
+ }
+ if (i == elem->num_instr_range -1)
+ {
+ switch (elem->last_i_type)
+ {
+ case OCSD_INSTR_BR:
+ case OCSD_INSTR_BR_INDIRECT:
+ switch (elem->last_i_subtype)
+ {
+ case OCSD_S_INSTR_V8_RET:
+ case OCSD_S_INSTR_V8_ERET:
+ case OCSD_S_INSTR_V7_IMPLIED_RET:
+ insn.iclass=BTRACE_INSN_RETURN;
+ break;
+
+ case OCSD_S_INSTR_BR_LINK:
+ insn.iclass=BTRACE_INSN_CALL;
+ break;
+
+ case OCSD_S_INSTR_NONE:
+ insn.iclass=BTRACE_INSN_JUMP;
+ }
+ break;
+
+ case OCSD_INSTR_ISB:
+ case OCSD_INSTR_DSB_DMB:
+ case OCSD_INSTR_WFI_WFE:
+ case OCSD_INSTR_OTHER:
+ insn.iclass=BTRACE_INSN_OTHER;
+ break;
+
+ default:
+ break;
+
+ }
+ }
+ ftrace_update_insns (bfun, insn);
+ pc = pc + size;
+ }
+}
+#undef ARM_PS_REGNUM
+
+#define ARM_EXCEPTION_UNDEFINED_INSTRUCTION 9
+
+/* Update btrace in the case of an exception. */
+
+static void
+cs_etm_update_btrace_with_exception (const void *context,
+ const ocsd_generic_trace_elem *elem)
+{
+ gdb_assert (elem->elem_type == OCSD_GEN_TRC_ELEM_EXCEPTION);
+
+ struct cs_etm_decoder *etm_decoder;
+ etm_decoder = (struct cs_etm_decoder *) context;
+ if (etm_decoder->t_info == nullptr)
+ return;
+
+ struct thread_info *tp;
+ tp = etm_decoder->t_info;
+
+ struct btrace_thread_info *btinfo;
+ btinfo = &tp->btrace;
+ /* Handle the implementation of breakpoints in gdb for arm (v7) architecture
+ using undefined instructions. */
+
+ if (etm_decoder->arch_version == ARCH_V7)
+ {
+ if (elem->exception_number == ARM_EXCEPTION_UNDEFINED_INSTRUCTION)
+ {
+ DEBUG ("handle breakpoints implementation in gdb for ARMv7");
+ ftrace_remove_last_insn (btinfo);
+ }
+ }
+}
+#undef ARM_EXCEPTION_UNDEFINED_INSTRUCTION
+
+/* Update btrace in the case of a trace on. */
+
+static void
+cs_etm_update_btrace_with_trace_on (const void *context,
+ const ocsd_generic_trace_elem *elem)
+{
+ gdb_assert (elem->elem_type == OCSD_GEN_TRC_ELEM_TRACE_ON);
+
+ struct cs_etm_decoder *etm_decoder;
+ etm_decoder = (struct cs_etm_decoder *)context;
+ if (etm_decoder->t_info == nullptr)
+ return;
+
+ struct thread_info *tp;
+ tp = etm_decoder->t_info;
+
+ struct btrace_thread_info *btinfo;
+ btinfo = &tp->btrace;
+
+ if (elem->trace_on_reason != TRACE_ON_NORMAL)
+ ftrace_new_gap (btinfo, elem->trace_on_reason, etm_decoder->gaps);
+
+}
+
+/* Callback function when a ocsd_generic_trace_elem is emitted. */
+
+static ocsd_datapath_resp_t
+cs_etm_trace_element_callback (const void *context,
+ const ocsd_trc_index_t indx,
+ const uint8_t trace_chan_id,
+ const ocsd_generic_trace_elem *elem)
+{
+ char str_buffer[128];
+ if (ocsd_gen_elem_str (elem, str_buffer, 128) == OCSD_OK)
+ DEBUG ("ETM trace_element: index= %d, channel= 0x%x, %s",
+ indx, trace_chan_id, str_buffer);
+
+ switch (elem->elem_type)
+ {
+ case OCSD_GEN_TRC_ELEM_TRACE_ON:
+ cs_etm_update_btrace_with_trace_on (context, elem);
+ break;
+
+ case OCSD_GEN_TRC_ELEM_INSTR_RANGE:
+ cs_etm_update_btrace_with_inst_range (context, elem);
+ break;
+
+ case OCSD_GEN_TRC_ELEM_EXCEPTION:
+ cs_etm_update_btrace_with_exception (context, elem);
+ break;
+
+ case OCSD_GEN_TRC_ELEM_UNKNOWN:
+ case OCSD_GEN_TRC_ELEM_EO_TRACE:
+ case OCSD_GEN_TRC_ELEM_NO_SYNC:
+ case OCSD_GEN_TRC_ELEM_EXCEPTION_RET:
+ case OCSD_GEN_TRC_ELEM_TIMESTAMP:
+ case OCSD_GEN_TRC_ELEM_PE_CONTEXT:
+ case OCSD_GEN_TRC_ELEM_ADDR_NACC:
+ case OCSD_GEN_TRC_ELEM_CYCLE_COUNT:
+ case OCSD_GEN_TRC_ELEM_ADDR_UNKNOWN:
+ case OCSD_GEN_TRC_ELEM_EVENT:
+ case OCSD_GEN_TRC_ELEM_SWTRACE:
+ case OCSD_GEN_TRC_ELEM_CUSTOM:
+ default:
+ break;
+
+ }
+ return OCSD_RESP_CONT;
+}
+
+/* Create a cs_etm_decoder and initialize it. */
+
+static bool
+cs_etm_create_decoder (struct cs_etm_trace_params *t_params,
+ struct cs_etm_decoder *decoder)
+{
+ const char *decoder_name;
+ ocsd_etmv3_cfg config_etmv3;
+ ocsd_etmv4_cfg trace_config_etmv4;
+ void *trace_config;
+ switch (t_params->protocol)
+ {
+ case CS_ETM_PROTO_ETMV3:
+ case CS_ETM_PROTO_PTM:
+ cs_etm_get_etmv3_config (t_params, &config_etmv3);
+ decoder_name = (t_params->protocol == CS_ETM_PROTO_ETMV3)
+ ? OCSD_BUILTIN_DCD_ETMV3 : OCSD_BUILTIN_DCD_PTM;
+ trace_config = &config_etmv3;
+ decoder->arch_version = ARCH_V7;
+ break;
+
+ case CS_ETM_PROTO_ETMV4i:
+ cs_etm_get_etmv4_config (t_params, &trace_config_etmv4);
+ decoder_name = OCSD_BUILTIN_DCD_ETMV4I;
+ trace_config = &trace_config_etmv4;
+ decoder->arch_version = ARCH_V8;
+ break;
+
+ default:
+ decoder->arch_version = ARCH_UNKNOWN;
+ DEBUG ("cs_etm_create_decoder: Unknown architecture version");
+ return false;
+
+ }
+ uint8_t csid;
+ if (ocsd_dt_create_decoder (decoder->dcd_tree, decoder_name,
+ OCSD_CREATE_FLG_FULL_DECODER,
+ trace_config, &csid))
+ {
+ DEBUG ("ocsd_dt_create_decoder failed");
+ return false;
+ }
+
+ if (ocsd_dt_set_gen_elem_outfn (decoder->dcd_tree,
+ cs_etm_trace_element_callback,
+ decoder))
+ {
+ DEBUG ("ocsd_dt_set_gen_elem_outfn failed");
+ return false;
+ }
+
+ decoder->prev_return = OCSD_RESP_CONT;
+ return true;
+}
+
+/* Allocate a cs_etm_decoder and initialize it. */
+
+static struct cs_etm_decoder *
+cs_etm_alloc_decoder (struct thread_info *tp, int num_cpu,
+ struct cs_etm_decoder_params d_params,
+ std::vector<cs_etm_trace_params> * t_params)
+{
+ ocsd_dcd_tree_src_t src_type = OCSD_TRC_SRC_SINGLE;
+ uint32_t deformatterCfgFlags = 0;
+
+ if (d_params.formatted)
+ src_type = OCSD_TRC_SRC_FRAME_FORMATTED;
+ if (d_params.frame_aligned)
+ deformatterCfgFlags |= OCSD_DFRMTR_FRAME_MEM_ALIGN;
+ if (d_params.fsyncs)
+ deformatterCfgFlags |= OCSD_DFRMTR_HAS_FSYNCS;
+ if (d_params.hsyncs)
+ deformatterCfgFlags |= OCSD_DFRMTR_HAS_HSYNCS;
+ if (d_params.reset_on_4x_sync)
+ deformatterCfgFlags |= OCSD_DFRMTR_RESET_ON_4X_FSYNC;
+
+ dcd_tree_handle_t dcdtree_handle;
+ dcdtree_handle = ocsd_create_dcd_tree (src_type, deformatterCfgFlags);
+
+ if (dcdtree_handle == C_API_INVALID_TREE_HANDLE)
+ {
+ DEBUG ("ocsd_create_dcd_tree failed");
+ return nullptr;
+ }
+ struct cs_etm_decoder *decoder;
+
+ decoder = (struct cs_etm_decoder*) xmalloc (sizeof (struct cs_etm_decoder));
+ decoder->dcd_tree = dcdtree_handle;
+
+ bool ret;
+ for (int i = 0; i < num_cpu; i++)
+ {
+ ret = cs_etm_create_decoder (&(t_params->at (i)), decoder);
+ if (ret == false)
+ {
+ DEBUG ("cs_etm_create_decoder failed");
+ ocsd_destroy_dcd_tree (decoder->dcd_tree);
+ free (decoder);
+ return nullptr;
+ }
+
+ }
+ decoder->t_info = tp;
+ return decoder;
+}
+
+/* Free a cs_etm_decoder. */
+
+static void
+cs_etm_free_decoder (struct cs_etm_decoder *decoder)
+{
+ if (decoder == nullptr)
+ return;
+
+ ocsd_destroy_dcd_tree (decoder->dcd_tree);
+ decoder->dcd_tree = nullptr;
+ decoder->t_info = nullptr;
+ free (decoder);
+}
+
+/* A callback function to allow the trace decoder to read the inferior's
+ memory. */
+
+static uint32_t
+btrace_etm_readmem_callback (const void *p_context, const ocsd_vaddr_t address,
+ const ocsd_mem_space_acc_t mem_space,
+ const uint32_t reqBytes, uint8_t *byteBuffer)
+{
+ int result, errcode;
+
+ result = (int) reqBytes;
+ try
+ {
+ errcode = target_read_code ((CORE_ADDR) address, byteBuffer, reqBytes);
+ if (errcode != 0)
+ result = 0;
+ }
+ catch (const gdb_exception_error &error)
+ {
+ result = 0;
+ }
+
+ return result;
+}
+
+/* Add memory access callback to the decoder. */
+
+static ocsd_err_t
+cs_etm_add_mem_access_callback (struct cs_etm_decoder *decoder,
+ CORE_ADDR start, CORE_ADDR end,
+ Fn_MemAcc_CB p_cb_func)
+{
+ ocsd_err_t error;
+ error = ocsd_dt_add_callback_mem_acc (decoder->dcd_tree,
+ (ocsd_vaddr_t) start,
+ (ocsd_vaddr_t) end,
+ OCSD_MEM_SPACE_ANY,
+ p_cb_func, decoder);
+ if (error == OCSD_OK)
+ decoder->mem_access = p_cb_func;
+
+ return error;
+}
+
+/* Process an etm traces data block. */
+
+static int
+cs_etm_process_data_block (struct cs_etm_decoder *decoder,
+ uint64_t index, const uint8_t *buf,
+ size_t len, size_t *consumed)
+{
+ int ret = 0;
+ ocsd_datapath_resp_t cur = OCSD_RESP_CONT;
+ ocsd_datapath_resp_t prev_return = decoder->prev_return;
+ size_t processed = 0;
+ uint32_t count;
+
+ while (processed < len)
+ {
+ if (OCSD_DATA_RESP_IS_WAIT (prev_return))
+ {
+ cur = ocsd_dt_process_data (decoder->dcd_tree, OCSD_OP_FLUSH,
+ 0, 0, nullptr, nullptr);
+ } else if (OCSD_DATA_RESP_IS_CONT (prev_return))
+ {
+ cur = ocsd_dt_process_data (decoder->dcd_tree,
+ OCSD_OP_DATA,
+ index + processed, len - processed,
+ &buf[processed], &count);
+ processed += count;
+ } else
+ {
+ DEBUG_FTRACE ("ocsd_dt_process_data returned with %d.\n", cur);
+ ret = -EINVAL;
+ break;
+ }
+
+ /* Return to the input code if the packet buffer is full.
+ Flushing will get done once the packet buffer has been
+ processed. */
+ if (OCSD_DATA_RESP_IS_WAIT (cur))
+ break;
+
+ prev_return = cur;
+ }
+
+ decoder->prev_return = cur;
+ *consumed = processed;
+
+ return ret;
+}
+
+/* Print all function in a btrace. */
+
+static void
+btrace_print_all (struct btrace_thread_info *btinfo)
+{
+ for (const btrace_function &function : btinfo->functions)
+ ftrace_debug (&function, "");
+}
+
+static void
+btrace_compute_ftrace_etm (struct thread_info *tp,
+ const struct btrace_data_etm *btrace,
+ std::vector<unsigned int> &gaps)
+{
+ DEBUG_FTRACE ("btrace->size is 0x%x for thread %s",
+ (unsigned int)(btrace->size), print_thread_id (tp));
+ if (btrace->size == 0)
+ return;
+
+ struct btrace_thread_info *btinfo;
+ btinfo = &tp->btrace;
+ if (btinfo->functions.empty ())
+ btinfo->level = 0;
+
+ struct cs_etm_decoder *decoder;
+ decoder = cs_etm_alloc_decoder (tp,btrace->config.num_cpu,
+ btrace->config.etm_decoder_params,
+ btrace->config.etm_trace_params);
+ if (decoder == nullptr)
+ error (_("Failed to allocate ARM CoreSight ETM Trace decoder."));
+
+ ocsd_err_t ocsd_error;
+ ocsd_error = cs_etm_add_mem_access_callback (decoder,
+ (CORE_ADDR)0x0L, (CORE_ADDR) -1L,
+ btrace_etm_readmem_callback);
+ if (ocsd_error!= OCSD_OK)
+ error (_("Failed to add CoreSight Trace decoder memory access callback."));
+
+ int errcode;
+ size_t consumed;
+ errcode = cs_etm_process_data_block (decoder,
+ 0, btrace->data,
+ btrace->size, &consumed);
+ if (errcode!=0)
+ error (_("Failed to decode ARM CoreSight ETM Trace."));
+ ftrace_compute_global_level_offset (btinfo);
+ btrace_add_pc (tp);
+ btrace_print_all (btinfo);
+ cs_etm_free_decoder (decoder);
+
+}
+#else /* defined (HAVE_LIBOPENCSD_C_API) */
+
+static void
+btrace_compute_ftrace_etm (struct thread_info *tp,
+ const struct btrace_data_etm *btrace,
+ std::vector<unsigned int> &gaps)
+{
+
+ internal_error (__FILE__, __LINE__, _("Unexpected branch trace format."));
+}
+#endif /* defined (HAVE_LIBOPENCSD_C_API) */
+
/* Compute the function branch trace from a block branch trace BTRACE for
a thread given by BTINFO. If CPU is not NULL, overwrite the cpu in the
branch trace configuration. This is currently only used for the PT
@@ -1531,6 +2133,10 @@ btrace_compute_ftrace_1 (struct thread_info *tp,
btrace_compute_ftrace_pt (tp, &btrace->variant.pt, gaps);
return;
+
+ case BTRACE_FORMAT_ETM:
+ btrace_compute_ftrace_etm (tp, &btrace->variant.etm, gaps);
+ return;
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
@@ -1599,6 +2205,10 @@ btrace_enable (struct thread_info *tp, const struct btrace_config *conf)
if (conf->format == BTRACE_FORMAT_PT)
error (_("Intel Processor Trace support was disabled at compile time."));
#endif /* !defined (HAVE_LIBIPT) */
+#if !defined (HAVE_LIBOPENCSD_C_API)
+ if (conf->format == BTRACE_FORMAT_ETM)
+ error (_("ARM CoreSight Trace support was disabled at compile time."));
+#endif /* !defined (HAVE_LIBOPENCSD_C_API) */
DEBUG ("enable thread %s (%s)", print_thread_id (tp),
target_pid_to_str (tp->ptid).c_str ());
@@ -1791,6 +2401,10 @@ btrace_stitch_trace (struct btrace_data *btrace, struct thread_info *tp)
case BTRACE_FORMAT_PT:
/* Delta reads are not supported. */
return -1;
+
+ case BTRACE_FORMAT_ETM:
+ /* Delta reads are not supported. */
+ return -1;
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format."));
@@ -3413,6 +4027,11 @@ maint_info_btrace_cmd (const char *args, int from_tty)
}
break;
#endif /* defined (HAVE_LIBIPT) */
+#if defined (HAVE_LIBOPENCSD_C_API)
+ case BTRACE_FORMAT_ETM:
+ printf_unfiltered (_("Version: %s.\n"), ocsd_get_version_str ());
+ break;
+#endif /* defined (HAVE_LIBOPENCSD_C_API) */
}
}
diff --git a/gdb/btrace.h b/gdb/btrace.h
index 8f6ce32103d..168be5488a2 100644
--- a/gdb/btrace.h
+++ b/gdb/btrace.h
@@ -34,6 +34,12 @@
# include <intel-pt.h>
#endif
+#if defined (HAVE_LIBOPENCSD_C_API)
+# include <opencsd/c_api/opencsd_c_api.h>
+# include <opencsd/etmv4/trc_pkt_types_etmv4.h>
+# include <opencsd/ocsd_if_types.h>
+#endif
+
#include <vector>
struct thread_info;
@@ -63,6 +69,22 @@ enum btrace_insn_flag
};
DEF_ENUM_FLAGS_TYPE (enum btrace_insn_flag, btrace_insn_flags);
+/* Extend MAX_BTRACE_REGISTER_SIZE if targets with registers
+bigger than 64 bits are considered. */
+#define MAX_BTRACE_REGISTER_SIZE 8
+/* A register entry in btrace_insn. */
+struct record_btrace_reg_entry
+{
+ /* Register number. */
+ unsigned short num;
+
+ /* Register size in sizeof (gdb_byte). */
+ unsigned short len;
+
+ /* Buffer for storing register value. */
+ gdb_byte buffer[MAX_BTRACE_REGISTER_SIZE * sizeof (gdb_byte)];
+};
+
/* A branch trace instruction.
This represents a single instruction in a branch trace. */
@@ -74,6 +96,9 @@ struct btrace_insn
/* The size of this instruction in bytes. */
gdb_byte size;
+ /* A vector of registers. */
+ std::vector<record_btrace_reg_entry> registers;
+
/* The instruction class of this instruction. */
enum btrace_insn_class iclass;
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 4d6495d440d..cf15a90f543 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -1576,18 +1576,29 @@ record_btrace_target::fetch_registers (struct regcache *regcache, int regno)
struct gdbarch *gdbarch;
int pcreg;
+ insn = btrace_insn_get (replay);
+ gdb_assert (insn != nullptr);
+ if (!insn->registers.empty ())
+ {
+ for (int i = 0; i < insn->registers.size (); i++)
+ {
+ if (insn->registers.operator[](i).num==regno)
+ {
+ regcache->raw_supply (regno,
+ insn->registers.operator[](i).buffer);
+ return;
+ }
+ }
+ }
gdbarch = regcache->arch ();
pcreg = gdbarch_pc_regnum (gdbarch);
if (pcreg < 0)
return;
- /* We can only provide the PC register. */
+ /* We can only provide the PC register here. */
if (regno >= 0 && regno != pcreg)
return;
- insn = btrace_insn_get (replay);
- gdb_assert (insn != NULL);
-
regcache->raw_supply (regno, &insn->pc);
}
else
@@ -3020,7 +3031,6 @@ cmd_record_btrace_start (const char *args, int from_tty)
}
}
-
/* The "show record btrace replay-memory-access" command. */
static void
diff --git a/gdbsupport/ChangeLog b/gdbsupport/ChangeLog
index ed4708b7028..38dc5a79277 100644
--- a/gdbsupport/ChangeLog
+++ b/gdbsupport/ChangeLog
@@ -1,3 +1,16 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * btrace-common.h (cs_etmv3_trace_params): New
+ (cs_etmv4_trace_params): New.
+ (cs_etm_trace_params): New.
+ (cs_etm_decoder_params): New
+ (btrace_data_etm_config): New.
+ (btrace_data_etm): New.
+ (btrace_data): add a btrace_data_etm.
+ * btrace-common.cc (btrace_data::fini): handle CoreSight traces.
+ (btrace_data::empty): handle CoreSight traces.
+ (btrace_data_append): handle CoreSight traces.
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* btrace-common.h (btrace_format): add BTRACE_FORMAT_ETM
diff --git a/gdbsupport/btrace-common.cc b/gdbsupport/btrace-common.cc
index 461f769ed51..9dc94d32470 100644
--- a/gdbsupport/btrace-common.cc
+++ b/gdbsupport/btrace-common.cc
@@ -62,7 +62,6 @@ btrace_format_short_string (enum btrace_format format)
case BTRACE_FORMAT_ETM:
return "etm";
-
}
internal_error (__FILE__, __LINE__, _("Unknown branch trace format"));
@@ -87,6 +86,12 @@ btrace_data::fini ()
case BTRACE_FORMAT_PT:
xfree (variant.pt.data);
return;
+
+ case BTRACE_FORMAT_ETM:
+ /* Variant.etm.data can be null if no new traces are collected. */
+ if (variant.etm.data != nullptr)
+ xfree (variant.etm.data);
+ return;
}
internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
@@ -107,6 +112,9 @@ btrace_data::empty () const
case BTRACE_FORMAT_PT:
return (variant.pt.size == 0);
+
+ case BTRACE_FORMAT_ETM:
+ return (variant.etm.size == 0);
}
internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
@@ -192,6 +200,38 @@ btrace_data_append (struct btrace_data *dst,
}
}
return 0;
+
+ case BTRACE_FORMAT_ETM:
+ switch (dst->format)
+ {
+ default:
+ return -1;
+
+ case BTRACE_FORMAT_NONE:
+ dst->format = BTRACE_FORMAT_ETM;
+ dst->variant.etm.data = nullptr;
+ dst->variant.etm.size = 0;
+
+ /* fall-through. */
+ case BTRACE_FORMAT_ETM:
+ {
+ gdb_byte *data;
+ size_t size;
+
+ size = src->variant.etm.size + dst->variant.etm.size;
+ data = (gdb_byte *) xmalloc (size);
+
+ memcpy (data, dst->variant.etm.data, dst->variant.etm.size);
+ memcpy (data + dst->variant.etm.size, src->variant.etm.data,
+ src->variant.etm.size);
+
+ xfree (dst->variant.etm.data);
+
+ dst->variant.etm.data = data;
+ dst->variant.etm.size = size;
+ }
+ }
+ return 0;
}
internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
diff --git a/gdbsupport/btrace-common.h b/gdbsupport/btrace-common.h
index 4ac658b9946..103a674763a 100644
--- a/gdbsupport/btrace-common.h
+++ b/gdbsupport/btrace-common.h
@@ -159,7 +159,6 @@ struct btrace_config
/* The ARM CoreSight ETM Trace configuration. */
struct btrace_config_etm etm;
-
};
/* Branch trace in BTS format. */
@@ -191,6 +190,149 @@ struct btrace_data_pt
size_t size;
};
+/* Parameters needed for decoding ETMv3 traces.
+ See open source coresight trace decoder library (opencsd)
+ for further details. */
+struct cs_etmv3_trace_params
+{
+ /* ETMv3 Main Control Register. */
+ uint32_t reg_ctrl;
+
+ /* ETMv3 Trace ID Register. */
+ uint32_t reg_trc_id;
+
+ /* ETMv3 Configuration Code Extension Register. */
+ uint32_t reg_ccer;
+
+ /* ETMv3 ID Register. */
+ uint32_t reg_idr;
+};
+
+/* Parameters needed for decoding ETMv4 traces.
+ See open source coresight trace decoder library (opencsd)
+ for further details. */
+struct cs_etmv4_trace_params
+{
+ /* ETMv4 ID Register 0. */
+ uint32_t reg_idr0;
+
+ /* ETMv4 ID Register 1. */
+ uint32_t reg_idr1;
+
+ /* ETMv4 ID Register 2. */
+ uint32_t reg_idr2;
+
+ /* ETMv4 ID Register 8. */
+ uint32_t reg_idr8;
+
+ /* ETMv4 Config Register. */
+ uint32_t reg_configr;
+
+ /* ETMv4 Trace ID Register. */
+ uint32_t reg_traceidr;
+};
+
+/* The following enums are indexed starting with 1 to align with the
+ open source coresight trace decoder library (opencsd). */
+enum
+{
+ /* Traces in ETMV3 protocol. */
+ CS_ETM_PROTO_ETMV3 = 1,
+
+ /* Traces in ETMV4 instructions protocol. */
+ CS_ETM_PROTO_ETMV4i,
+
+ /* Traces in ETMV4 data protocol. */
+ CS_ETM_PROTO_ETMV4d,
+
+ /* Traces in PTM protocol. */
+ CS_ETM_PROTO_PTM,
+};
+
+/* The following enum must be aligned with the
+ open source coresight trace decoder library (opencsd). */
+
+/* Core Architecture Version. */
+enum
+{
+ /* unknown architecture. */
+ ARCHITECTURE_UNKNOWN,
+
+ /* None ARM, custom architecture. */
+ ARCHITECTURE_CUSTOM,
+
+ /* V7 architecture. */
+ ARCHITECTURE_V7,
+
+ /* V8 architecture. */
+ ARCHITECTURE_V8,
+
+ /* V8.3 architecture. */
+ ARCHITECTURE_V8r3,
+};
+
+/* The following enum must be aligned with the
+ open source coresight trace decoder library (opencsd). */
+
+/* Core Profile. */
+enum
+{
+ PROFILE_UNKNOWN, /* Unknown profile. */
+ PROFILE_CORTEX_M, /* Cortex-M profile. */
+ PROFILE_CORTEX_R, /* Cortex-R profile. */
+ PROFILE_CORTEX_A, /* Cortex-A profile. */
+ PROFILE_CUSTOM, /* None ARM, custom arch profile. */
+};
+
+/* Parameters of trace source. */
+struct cs_etm_trace_params
+{
+ struct btrace_cpu cpu;
+ int arch_ver;
+ int core_profile;
+ int protocol;
+ union {
+ struct cs_etmv3_trace_params etmv3;
+ struct cs_etmv4_trace_params etmv4;
+ };
+};
+
+/* Parameters of trace sink/decoder. */
+struct cs_etm_decoder_params
+{
+ uint8_t formatted:1, /* Formatted input, or single source input. */
+ fsyncs :1, /* Formatted data has fsyncs. */
+ hsyncs :1, /* Formatted data has hsyncs. */
+ frame_aligned :1, /* Formatted frames are memory aligned. */
+ reset_on_4x_sync :1, /* Reset decoders at 4x consecutive fsyncs. */
+ __res :3; /* Reserved, not used. */
+};
+
+/* Configuration information to go with the etm trace data. */
+struct btrace_data_etm_config
+{
+ /* The number of cpu (trace sources). */
+ int num_cpu;
+ std::vector<struct cs_etm_trace_params> *etm_trace_params;
+ struct cs_etm_decoder_params etm_decoder_params;
+};
+
+/* Branch trace in arm Processor Trace format. */
+struct btrace_data_etm
+{
+ /* Some configuration information to go with the data. */
+ struct btrace_data_etm_config config;
+
+ /* The trace data. */
+ gdb_byte *data;
+
+ /* The size of DATA in bytes. */
+ size_t size;
+
+ /* Trace id for this thread. set to 0xFF to ignore it during parsing. */
+ int trace_id;
+};
+
/* The branch trace data. */
struct btrace_data
{
@@ -228,6 +370,9 @@ struct btrace_data
/* Format == BTRACE_FORMAT_PT. */
struct btrace_data_pt pt;
+
+ /* Format == BTRACE_FORMAT_ETM. */
+ struct btrace_data_etm etm;
} variant;
private:
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 4/8] start/stop btrace with coresight etm and collect etm buffer on linux os
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
` (2 preceding siblings ...)
2021-03-11 2:50 ` [PATCH v2 3/8] start/stop btrace with coresight etm and parse etm buffer. nat independant Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 5/8] fix issue: gdb hangs in the command following a commad returning with TARGET_WAITKIND_NO_HISTORY Zied Guermazi
` (3 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch implement the lower layer for starting ad stopping
ARM CoreSight tracing on linux targets for arm and aarch64
gdb/ChangeLog
* nat/linux-btrace.h (btrace_tinfo_etm): New.
(btrace_target_info): add etm.
* nat/linux-btrace.c (perf_event_read_available): New.
(linux_enable_bts): get page size from sysconf.
(linux_enable_pt): get page size from sysconf.
(perf_event_etm_event_type): New.
(perf_event_etm_event_sink): New.
(linux_enable_etm): New.
(linux_enable_btrace): add enabling etm traces.
(linux_disable_bts): get page size from sysconf.
(linux_disable_pt): get page size from sysconf.
(linux_disable_etm): New.
(linux_disable_btrace): add disabling etm traces.
(get_cpu_count): New.
(cs_etm_is_etmv4): New.
(cs_etm_get_register): New.
(coresight_get_trace_id): New.
(fill_etm_trace_params): New.
(linux_fill_btrace_etm_config): New.
(linux_read_etm): New.
(linux_read_btrace): add reading etm traces.
* arm-linux-nat.c (arm_linux_nat_target::enable_btrace): New.
(arm_linux_nat_target::disable_btrace): New.
(arm_linux_nat_target::teardown_btrace): New.
(arm_linux_nat_target::read_btrace): New.
(arm_linux_nat_target::btrace_conf): New.
* aarch64-linux-nat.c (aarch64_linux_nat_target::enable_btrace): New.
(aarch64_linux_nat_target::disable_btrace): New.
(aarch64_linux_nat_target::teardown_btrace): New.
(aarch64_linux_nat_target::read_btrace): New.
(aarch64_linux_nat_target::btrace_conf): New.
---
gdb/ChangeLog | 34 +++
gdb/aarch64-linux-nat.c | 68 ++++++
gdb/arm-linux-nat.c | 68 ++++++
gdb/nat/linux-btrace.c | 457 ++++++++++++++++++++++++++++++++++++++--
gdb/nat/linux-btrace.h | 19 ++
5 files changed, 634 insertions(+), 12 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4453a3e8185..d22ec8b5976 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,37 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * nat/linux-btrace.h (btrace_tinfo_etm): New.
+ (btrace_target_info): add etm.
+ * nat/linux-btrace.c (perf_event_read_available): New.
+ (linux_enable_bts): get page size from sysconf.
+ (linux_enable_pt): get page size from sysconf.
+ (perf_event_etm_event_type): New.
+ (perf_event_etm_event_sink): New.
+ (linux_enable_etm): New.
+ (linux_enable_btrace): add enabling etm traces.
+ (linux_disable_bts): get page size from sysconf.
+ (linux_disable_pt): get page size from sysconf.
+ (linux_disable_etm): New.
+ (linux_disable_btrace): add disabling etm traces.
+ (get_cpu_count): New.
+ (cs_etm_is_etmv4): New.
+ (cs_etm_get_register): New.
+ (coresight_get_trace_id): New.
+ (fill_etm_trace_params): New.
+ (linux_fill_btrace_etm_config): New.
+ (linux_read_etm): New.
+ (linux_read_btrace): add reading etm traces.
+ * arm-linux-nat.c (arm_linux_nat_target::enable_btrace): New.
+ (arm_linux_nat_target::disable_btrace): New.
+ (arm_linux_nat_target::teardown_btrace): New.
+ (arm_linux_nat_target::read_btrace): New.
+ (arm_linux_nat_target::btrace_conf): New.
+ * aarch64-linux-nat.c (aarch64_linux_nat_target::enable_btrace): New.
+ (aarch64_linux_nat_target::disable_btrace): New.
+ (aarch64_linux_nat_target::teardown_btrace): New.
+ (aarch64_linux_nat_target::read_btrace): New.
+ (aarch64_linux_nat_target::btrace_conf): New.
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* btrace.c (ftrace_remove_last_insn): New.
diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c
index 0cae91b569c..f459fdf6f0e 100644
--- a/gdb/aarch64-linux-nat.c
+++ b/gdb/aarch64-linux-nat.c
@@ -35,6 +35,7 @@
#include "nat/aarch64-linux.h"
#include "nat/aarch64-linux-hw-point.h"
#include "nat/aarch64-sve-linux-ptrace.h"
+#include "nat/linux-btrace.h"
#include "elf/external.h"
#include "elf/common.h"
@@ -84,6 +85,17 @@ class aarch64_linux_nat_target final : public linux_nat_target
/* Override the GNU/Linux post attach hook. */
void post_attach (int pid) override;
+ /* Override branch tracing. */
+ struct btrace_target_info *enable_btrace (ptid_t ptid,
+ const struct btrace_config *conf) override;
+ void disable_btrace (struct btrace_target_info *tinfo) override;
+ void teardown_btrace (struct btrace_target_info *tinfo) override;
+ enum btrace_error read_btrace (struct btrace_data *data,
+ struct btrace_target_info *btinfo,
+ enum btrace_read_type type) override;
+ const struct btrace_config *btrace_conf (const struct btrace_target_info *)
+ override;
+
/* These three defer to common nat/ code. */
void low_new_thread (struct lwp_info *lp) override
{ aarch64_linux_new_thread (lp); }
@@ -632,6 +644,62 @@ aarch64_linux_nat_target::post_attach (int pid)
linux_nat_target::post_attach (pid);
}
+/* Enable branch tracing. */
+
+struct btrace_target_info *
+aarch64_linux_nat_target::enable_btrace (ptid_t ptid,
+ const struct btrace_config *conf)
+{
+ struct btrace_target_info *tinfo = nullptr;
+ try
+ {
+ tinfo = linux_enable_btrace (ptid, conf);
+ }
+ catch (const gdb_exception_error &exception)
+ {
+ error (_("Could not enable branch tracing for %s: %s"),
+ target_pid_to_str (ptid).c_str (), exception.what ());
+ }
+
+ return tinfo;
+}
+
+/* Disable branch tracing. */
+
+void
+aarch64_linux_nat_target::disable_btrace (struct btrace_target_info *tinfo)
+{
+ enum btrace_error errcode = linux_disable_btrace (tinfo);
+
+ if (errcode != BTRACE_ERR_NONE)
+ error (_("Could not disable branch tracing."));
+}
+
+/* Teardown branch tracing. */
+
+void
+aarch64_linux_nat_target::teardown_btrace (struct btrace_target_info *tinfo)
+{
+ /* Ignore errors. */
+ linux_disable_btrace (tinfo);
+}
+
+enum btrace_error
+aarch64_linux_nat_target::read_btrace (struct btrace_data *data,
+ struct btrace_target_info *btinfo,
+ enum btrace_read_type type)
+{
+ return linux_read_btrace (data, btinfo, type);
+}
+
+/* See to_btrace_conf in target.h. */
+
+const struct btrace_config *
+aarch64_linux_nat_target::btrace_conf (const struct btrace_target_info *btinfo)
+{
+ return linux_btrace_conf (btinfo);
+}
+
/* Implement the "read_description" target_ops method. */
const struct target_desc *
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c
index 662dade0a12..8a8d4b65776 100644
--- a/gdb/arm-linux-nat.c
+++ b/gdb/arm-linux-nat.c
@@ -39,6 +39,7 @@
#include <sys/procfs.h>
#include "nat/linux-ptrace.h"
+#include "nat/linux-btrace.h"
#include "linux-tdep.h"
/* Prototypes for supply_gregset etc. */
@@ -95,6 +96,17 @@ class arm_linux_nat_target final : public linux_nat_target
const struct target_desc *read_description () override;
+ /* Override branch tracing. */
+ struct btrace_target_info *enable_btrace (ptid_t ptid,
+ const struct btrace_config *conf) override;
+ void disable_btrace (struct btrace_target_info *tinfo) override;
+ void teardown_btrace (struct btrace_target_info *tinfo) override;
+ enum btrace_error read_btrace (struct btrace_data *data,
+ struct btrace_target_info *btinfo,
+ enum btrace_read_type type) override;
+ const struct btrace_config *btrace_conf (const struct btrace_target_info *)
+ override;
+
/* Override linux_nat_target low methods. */
/* Handle thread creation and exit. */
@@ -1190,6 +1202,62 @@ arm_linux_nat_target::watchpoint_addr_within_range (CORE_ADDR addr,
return start <= addr && start + length - 1 >= addr;
}
+/* Enable branch tracing. */
+
+struct btrace_target_info *
+arm_linux_nat_target::enable_btrace (ptid_t ptid,
+ const struct btrace_config *conf)
+{
+ struct btrace_target_info *tinfo = nullptr;
+ try
+ {
+ tinfo = linux_enable_btrace (ptid, conf);
+ }
+ catch (const gdb_exception_error &exception)
+ {
+ error (_("Could not enable branch tracing for %s: %s"),
+ target_pid_to_str (ptid).c_str (), exception.what ());
+ }
+
+ return tinfo;
+}
+
+/* Disable branch tracing. */
+
+void
+arm_linux_nat_target::disable_btrace (struct btrace_target_info *tinfo)
+{
+ enum btrace_error errcode = linux_disable_btrace (tinfo);
+
+ if (errcode != BTRACE_ERR_NONE)
+ error (_("Could not disable branch tracing."));
+}
+
+/* Teardown branch tracing. */
+
+void
+arm_linux_nat_target::teardown_btrace (struct btrace_target_info *tinfo)
+{
+ /* Ignore errors. */
+ linux_disable_btrace (tinfo);
+}
+
+enum btrace_error
+arm_linux_nat_target::read_btrace (struct btrace_data *data,
+ struct btrace_target_info *btinfo,
+ enum btrace_read_type type)
+{
+ return linux_read_btrace (data, btinfo, type);
+}
+
+/* See to_btrace_conf in target.h. */
+
+const struct btrace_config *
+arm_linux_nat_target::btrace_conf (const struct btrace_target_info *btinfo)
+{
+ return linux_btrace_conf (btinfo);
+}
+
/* Handle thread creation. We need to copy the breakpoints and watchpoints
in the parent thread to the child thread. */
void
diff --git a/gdb/nat/linux-btrace.c b/gdb/nat/linux-btrace.c
index 324f7ef0407..527a3e94ba7 100644
--- a/gdb/nat/linux-btrace.c
+++ b/gdb/nat/linux-btrace.c
@@ -159,6 +159,67 @@ perf_event_read (const struct perf_event_buffer *pev, __u64 data_head,
return buffer;
}
+/* Copy available bytes from PEV ending at DATA_HEAD, updates *psize
+ gives back *data: a pointer to the memory holding the copy.
+
+ The caller is responsible for freeing the data memory. */
+static void
+perf_event_read_available (struct perf_event_buffer *pev, gdb_byte **data,
+ size_t *psize)
+{
+ const gdb_byte *begin, *end, *start, *stop;
+ gdb_byte *buffer;
+ size_t buffer_size;
+ __u64 data_tail, data_head;
+
+ if (psize == NULL)
+ {
+ *data = NULL;
+ return ;
+ }
+
+ buffer_size = *(pev->data_head) - pev->last_head;
+
+ if (buffer_size >pev->size)
+ buffer_size = pev->size;
+
+ data_head = *(pev->data_head);
+ data_tail = *(pev->data_head) - buffer_size;
+
+ /* If we ask for more data than we seem to have, we wrap around and read
+ data from the end of the buffer. This is already handled by the %
+ BUFFER_SIZE operation, below. Here, we just need to make sure that we
+ don't underflow.
+
+ Note that this is perfectly OK for perf event buffers where data_head
+ doesn'grow indefinitely and instead wraps around to remain within the
+ buffer's boundaries. */
+
+ gdb_assert (buffer_size <= data_head);
+
+ begin = pev->mem;
+ start = begin + data_tail % pev->size;
+ stop = begin + data_head % pev->size;
+
+ buffer = (gdb_byte *) xmalloc (buffer_size);
+
+ if (start < stop)
+ {
+ memcpy (buffer, start, stop - start);
+ }
+ else
+ {
+ end = begin + pev->size;
+
+ memcpy (buffer, start, end - start);
+ memcpy (buffer + (end - start), begin, stop - begin);
+ }
+ pev->last_head = *(pev->data_head);
+ *psize = buffer_size;
+ *data = buffer;
+ return ;
+}
+
/* Copy the perf event buffer data from PEV.
Store a pointer to the copy into DATA and its size in SIZE. */
@@ -483,10 +544,11 @@ linux_enable_bts (ptid_t ptid, const struct btrace_config_bts *conf)
scoped_fd fd (syscall (SYS_perf_event_open, &bts->attr, pid, -1, -1, 0));
if (fd.get () < 0)
diagnose_perf_event_open_fail ();
+ long page_size = sysconf (_SC_PAGESIZE);
/* Convert the requested size in bytes to pages (rounding up). */
- pages = ((size_t) conf->size / PAGE_SIZE
- + ((conf->size % PAGE_SIZE) == 0 ? 0 : 1));
+ pages = ((size_t) conf->size / page_size
+ + ((conf->size % page_size) == 0 ? 0 : 1));
/* We need at least one page. */
if (pages == 0)
pages = 1;
@@ -505,17 +567,17 @@ linux_enable_bts (ptid_t ptid, const struct btrace_config_bts *conf)
size_t length;
__u64 data_size;
- data_size = (__u64) pages * PAGE_SIZE;
+ data_size = (__u64) pages * page_size;
/* Don't ask for more than we can represent in the configuration. */
if ((__u64) UINT_MAX < data_size)
continue;
size = (size_t) data_size;
- length = size + PAGE_SIZE;
+ length = size + page_size;
/* Check for overflows. */
- if ((__u64) length != data_size + PAGE_SIZE)
+ if ((__u64) length != data_size + page_size)
continue;
errno = 0;
@@ -530,7 +592,7 @@ linux_enable_bts (ptid_t ptid, const struct btrace_config_bts *conf)
struct perf_event_mmap_page *header = (struct perf_event_mmap_page *)
data.get ();
- data_offset = PAGE_SIZE;
+ data_offset = page_size;
#if defined (PERF_ATTR_SIZE_VER5)
if (offsetof (struct perf_event_mmap_page, data_size) <= header->size)
@@ -613,7 +675,8 @@ linux_enable_pt (ptid_t ptid, const struct btrace_config_pt *conf)
diagnose_perf_event_open_fail ();
/* Allocate the configuration page. */
- scoped_mmap data (nullptr, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED,
+ long page_size = sysconf (_SC_PAGESIZE);
+ scoped_mmap data (nullptr, page_size, PROT_READ | PROT_WRITE, MAP_SHARED,
fd.get (), 0);
if (data.get () == MAP_FAILED)
error (_("Failed to map trace user page: %s."), safe_strerror (errno));
@@ -624,8 +687,8 @@ linux_enable_pt (ptid_t ptid, const struct btrace_config_pt *conf)
header->aux_offset = header->data_offset + header->data_size;
/* Convert the requested size in bytes to pages (rounding up). */
- pages = ((size_t) conf->size / PAGE_SIZE
- + ((conf->size % PAGE_SIZE) == 0 ? 0 : 1));
+ pages = ((size_t) conf->size / page_size
+ + ((conf->size % page_size) == 0 ? 0 : 1));
/* We need at least one page. */
if (pages == 0)
pages = 1;
@@ -644,7 +707,7 @@ linux_enable_pt (ptid_t ptid, const struct btrace_config_pt *conf)
size_t length;
__u64 data_size;
- data_size = (__u64) pages * PAGE_SIZE;
+ data_size = (__u64) pages * page_size;
/* Don't ask for more than we can represent in the configuration. */
if ((__u64) UINT_MAX < data_size)
@@ -689,6 +752,153 @@ linux_enable_pt (ptid_t ptid, const struct btrace_config_pt *conf)
#endif /* !defined (PERF_ATTR_SIZE_VER5) */
+/* Determine the etm event type. */
+
+static int
+perf_event_etm_event_type ()
+{
+ static const char filename[] = "/sys/bus/event_source/devices/cs_etm/type";
+
+ errno = 0;
+ gdb_file_up file = gdb_fopen_cloexec (filename, "r");
+ if (file.get () == nullptr)
+ error (_("Failed to open %s: %s."), filename, safe_strerror (errno));
+
+ int type, found = fscanf (file.get (), "%d", &type);
+ if (found != 1)
+ error (_("Failed to read the ETM event type from %s."), filename);
+
+ return type;
+}
+
+
+static unsigned int
+perf_event_etm_event_sink (const struct btrace_config_etm *conf)
+{
+ char filename[PATH_MAX];
+
+ sprintf (filename, "/sys/bus/event_source/devices/cs_etm/sinks/%s",
+ conf->sink);
+ errno = 0;
+ gdb_file_up file = gdb_fopen_cloexec (filename, "r");
+ if (file.get () == nullptr)
+ error (_("Failed to open %s: %s."), filename, safe_strerror (errno));
+
+ unsigned int sink;
+ int found = fscanf (file.get (), "0x%x", &sink);
+ if (found != 1)
+ error (_("Failed to read the ETM sink from %s."), filename);
+
+ return sink;
+}
+
+/* Enable arm CoreSight ETM tracing. */
+
+static struct btrace_target_info *
+linux_enable_etm (ptid_t ptid, const struct btrace_config_etm *conf)
+{
+ struct btrace_tinfo_etm *etm;
+ size_t pages;
+ int pid, pg;
+
+ pid = ptid.lwp ();
+ if (pid == 0)
+ pid = ptid.pid ();
+
+ gdb::unique_xmalloc_ptr<btrace_target_info> tinfo
+ (XCNEW (btrace_target_info));
+ tinfo->ptid = ptid;
+
+ tinfo->conf.format = BTRACE_FORMAT_ETM;
+ etm = &tinfo->variant.etm;
+
+ etm->attr.type = perf_event_etm_event_type ();
+ etm->attr.size = sizeof (etm->attr);
+
+ etm->attr.sample_type = PERF_SAMPLE_CPU;
+ etm->attr.read_format = PERF_FORMAT_ID;
+ etm->attr.sample_id_all = 1;
+ etm->attr.enable_on_exec = 1;
+ etm->attr.exclude_kernel = 1;
+ etm->attr.exclude_hv = 1;
+ etm->attr.exclude_idle = 1;
+ if (conf->sink != nullptr)
+ {
+ if (strcmp (conf->sink, "default")!=0)
+ etm->attr.config2 = perf_event_etm_event_sink (conf);
+ }
+
+ errno = 0;
+ scoped_fd fd (syscall (SYS_perf_event_open, &etm->attr, pid, -1, -1, 0));
+ if (fd.get () < 0)
+ diagnose_perf_event_open_fail ();
+
+ /* Allocate the configuration page. */
+ long page_size = sysconf (_SC_PAGESIZE);
+ scoped_mmap data (nullptr, page_size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd.get (), 0);
+ if (data.get () == MAP_FAILED)
+ error (_("Failed to map trace user page: %s."), safe_strerror (errno));
+
+ struct perf_event_mmap_page *header = (struct perf_event_mmap_page *)
+ data.get ();
+
+ header->aux_offset = header->data_offset + header->data_size;
+ /* Convert the requested size in bytes to pages (rounding up). */
+ pages = ((size_t) conf->size / page_size
+ + ((conf->size % page_size) == 0 ? 0 : 1));
+ /* We need at least one page. */
+ if (pages == 0)
+ pages = 1;
+
+ /* The buffer size can be requested in powers of two pages. Adjust PAGES
+ to the next power of two. */
+ for (pg = 0; pages != ((size_t) 1 << pg); ++pg)
+ if ((pages & ((size_t) 1 << pg)) != 0)
+ pages += ((size_t) 1 << pg);
+
+ /* We try to allocate the requested size.
+ If that fails, try to get as much as we can. */
+ scoped_mmap aux;
+ for (; pages > 0; pages >>= 1)
+ {
+ size_t length;
+ __u64 data_size;
+ data_size = (__u64) pages * page_size;
+
+ /* Don't ask for more than we can represent in the configuration. */
+ if ((__u64) UINT_MAX < data_size)
+ continue;
+
+ length = (size_t) data_size;
+
+ /* Check for overflows. */
+ if ((__u64) length != data_size)
+ continue;
+
+ header->aux_size = data_size;
+
+ errno = 0;
+ aux.reset (nullptr, length, PROT_READ, MAP_SHARED, fd.get (),
+ header->aux_offset);
+ if (aux.get () != MAP_FAILED)
+ break;
+ }
+ if (pages == 0)
+ error (_("Failed to map trace buffer: %s."), safe_strerror (errno));
+
+ etm->etm.size = aux.size ();
+ etm->etm.mem = (const uint8_t *) aux.release ();
+ etm->etm.data_head = &header->aux_head;
+ etm->etm.last_head = header->aux_tail;
+ etm->header = (struct perf_event_mmap_page *) data.release ();
+ gdb_assert (etm->header == header);
+ etm->file = fd.release ();
+
+ tinfo->conf.etm.size = (unsigned int) etm->etm.size;
+ return tinfo.release ();
+}
+
/* See linux-btrace.h. */
struct btrace_target_info *
@@ -707,6 +917,10 @@ linux_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
case BTRACE_FORMAT_PT:
return linux_enable_pt (ptid, &conf->pt);
+
+ case BTRACE_FORMAT_ETM:
+ return linux_enable_etm (ptid, &conf->etm);
+
}
}
@@ -715,7 +929,8 @@ linux_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
static enum btrace_error
linux_disable_bts (struct btrace_tinfo_bts *tinfo)
{
- munmap((void *) tinfo->header, tinfo->bts.size + PAGE_SIZE);
+ long page_size = sysconf (_SC_PAGESIZE);
+ munmap((void *) tinfo->header, tinfo->bts.size + page_size);
close (tinfo->file);
return BTRACE_ERR_NONE;
@@ -726,8 +941,22 @@ linux_disable_bts (struct btrace_tinfo_bts *tinfo)
static enum btrace_error
linux_disable_pt (struct btrace_tinfo_pt *tinfo)
{
+ long page_size = sysconf (_SC_PAGESIZE);
munmap((void *) tinfo->pt.mem, tinfo->pt.size);
- munmap((void *) tinfo->header, PAGE_SIZE);
+ munmap((void *) tinfo->header, page_size);
+ close (tinfo->file);
+
+ return BTRACE_ERR_NONE;
+}
+
+/* Disable arm CoreSight ETM tracing. */
+
+static enum btrace_error
+linux_disable_etm (struct btrace_tinfo_etm *tinfo)
+{
+ long page_size = sysconf (_SC_PAGESIZE);
+ munmap ((void *) tinfo->etm.mem, tinfo->etm.size);
+ munmap ((void *) tinfo->header, page_size);
close (tinfo->file);
return BTRACE_ERR_NONE;
@@ -753,6 +982,10 @@ linux_disable_btrace (struct btrace_target_info *tinfo)
case BTRACE_FORMAT_PT:
errcode = linux_disable_pt (&tinfo->variant.pt);
break;
+
+ case BTRACE_FORMAT_ETM:
+ errcode = linux_disable_etm (&tinfo->variant.etm);
+ break;
}
if (errcode == BTRACE_ERR_NONE)
@@ -898,6 +1131,198 @@ linux_read_pt (struct btrace_data_pt *btrace,
internal_error (__FILE__, __LINE__, _("Unknown btrace read type."));
}
+/* Return the number of CPUs that are present. */
+
+static int
+get_cpu_count (void)
+{
+ static const char filename[] = "/sys/devices/system/cpu/present";
+
+ gdb_file_up file = gdb_fopen_cloexec (filename, "r");
+ if (file.get () == nullptr)
+ error (_("Failed to open %s: %s."), filename, safe_strerror (errno));
+
+ int length;
+
+ fseek (file.get (), 0, SEEK_END);
+ length = ftell (file.get ());
+ fseek (file.get (), 0, SEEK_SET);
+
+ char * buffer;
+
+ buffer = (char*) xmalloc (length+1);
+
+ length = fread (buffer, 1, length, file.get ());
+ buffer[length]='\0';
+ while (--length)
+ {
+ if ((buffer[length] == ',') || (buffer[length] == '-'))
+ {
+ length++;
+ break;
+ }
+ }
+
+ int cpu_count;
+
+ if (sscanf (&buffer[length], "%d", &cpu_count) < 1)
+ error (_("Failed to get cpu count in %s: %s."),
+ buffer, safe_strerror (errno));
+
+ cpu_count ++;
+ return (cpu_count);
+}
+
+/* Check if the ETM is an etmv4. */
+
+static bool
+cs_etm_is_etmv4 (int cpu)
+{
+ char filename[PATH_MAX];
+ sprintf (filename,
+ "/sys/bus/event_source/devices/cs_etm/cpu%d/trcidr/trcidr0",
+ cpu);
+ errno = 0;
+ gdb_file_up file = gdb_fopen_cloexec (filename, "r");
+ if (file.get () == nullptr)
+ return false;
+
+ return true;
+}
+
+/* Get etm configuration register from sys filesystem. */
+
+static uint32_t
+cs_etm_get_register (int cpu, const char *path)
+{
+ char filename[PATH_MAX];
+
+ /* Get coresight register from sysfs. */
+ sprintf (filename,
+ "/sys/bus/event_source/devices/cs_etm/cpu%d/%s",
+ cpu, path);
+ errno = 0;
+ gdb_file_up file = gdb_fopen_cloexec (filename, "r");
+ if (file.get () == nullptr)
+ error (_("Failed to open %s: %s."), filename, safe_strerror (errno));
+
+ uint32_t val = 0;
+
+ int found = fscanf (file.get (), "0x%x", &val);
+ if (found != 1)
+ error (_("Failed to read coresight register from %s."), filename);
+ return val;
+}
+
+#define CORESIGHT_ETM_PMU_SEED 0x10
+
+/* Calculate trace_id for this cpu
+ to be kept aligned with coresight-pmu.h. */
+
+static inline int
+coresight_get_trace_id (int cpu)
+{
+ return (CORESIGHT_ETM_PMU_SEED + (cpu * 2));
+}
+
+
+/* PTMs ETMIDR[11:8] set to b0011. */
+#define ETMIDR_PTM_VERSION 0x00000300
+
+/* Collect and fill etm trace parameter. */
+
+static void
+fill_etm_trace_params (struct cs_etm_trace_params *etm_trace_params, int cpu)
+{
+ if (cs_etm_is_etmv4 (cpu) == true)
+ {
+ etm_trace_params->arch_ver = ARCHITECTURE_V8;
+ etm_trace_params->core_profile = PROFILE_CORTEX_A;
+ etm_trace_params->protocol = CS_ETM_PROTO_ETMV4i;
+ /* This is the parameter passed in etm->attr.config in the call to
+ perf_event_open remapped according to linux/coresight-pmu.h. */
+ etm_trace_params->etmv4.reg_configr = 0;
+ etm_trace_params->etmv4.reg_idr0
+ = cs_etm_get_register (cpu, "trcidr/trcidr0");
+ etm_trace_params->etmv4.reg_idr1
+ = cs_etm_get_register (cpu, "trcidr/trcidr1");
+ etm_trace_params->etmv4.reg_idr2
+ = cs_etm_get_register (cpu, "trcidr/trcidr2");
+ etm_trace_params->etmv4.reg_idr8
+ = cs_etm_get_register (cpu, "trcidr/trcidr8");
+ etm_trace_params->etmv4.reg_traceidr = coresight_get_trace_id (cpu);
+ }
+ else
+ {
+ etm_trace_params->arch_ver = ARCHITECTURE_V7;
+ etm_trace_params->core_profile = PROFILE_CORTEX_A;
+ etm_trace_params->protocol
+ = (etm_trace_params->etmv3.reg_idr & ETMIDR_PTM_VERSION)
+ == ETMIDR_PTM_VERSION ? CS_ETM_PROTO_PTM : CS_ETM_PROTO_ETMV3;
+ etm_trace_params->etmv3.reg_ccer
+ = cs_etm_get_register (cpu, "mgmt/etmccer");
+ etm_trace_params->etmv3.reg_ctrl
+ = cs_etm_get_register (cpu, "mgmt/etmcr");
+ etm_trace_params->etmv3.reg_idr
+ = cs_etm_get_register (cpu, "mgmt/etmidr");
+ etm_trace_params->etmv3.reg_trc_id
+ = cs_etm_get_register (cpu, "traceid");
+ }
+}
+
+static void
+linux_fill_btrace_etm_config (struct btrace_target_info *tinfo,
+ struct btrace_data_etm_config *conf)
+{
+
+ cs_etm_trace_params etm_trace_params;
+ conf->num_cpu = get_cpu_count ();
+ conf->etm_trace_params = new std::vector<cs_etm_trace_params>;
+ for (int i = 0; i < conf->num_cpu; i++)
+ {
+ fill_etm_trace_params (&etm_trace_params,i);
+ conf->etm_trace_params->push_back (etm_trace_params);
+ }
+
+ conf->etm_decoder_params.formatted = 1;
+ conf->etm_decoder_params.fsyncs = 0;
+ conf->etm_decoder_params.hsyncs = 1;
+ conf->etm_decoder_params.frame_aligned = 0;
+ conf->etm_decoder_params.reset_on_4x_sync = 1;
+}
+
+static enum btrace_error
+linux_read_etm (struct btrace_data_etm *btrace,
+ struct btrace_target_info *tinfo,
+ enum btrace_read_type type)
+{
+ struct perf_event_buffer *etm;
+ etm = &tinfo->variant.etm.etm;
+
+ linux_fill_btrace_etm_config (tinfo, &btrace->config);
+
+ switch (type)
+ {
+ case BTRACE_READ_DELTA:
+ /* We don't support delta reads. The data head (i.e. aux_head) wraps
+ around to stay inside the aux buffer. */
+ return BTRACE_ERR_NOT_SUPPORTED;
+
+ case BTRACE_READ_NEW:
+ if (!perf_event_new_data (etm))
+ return BTRACE_ERR_NONE;
+
+ /* Fall through. */
+ case BTRACE_READ_ALL:
+ etm->last_head=0;
+ perf_event_read_available (etm, &(btrace->data),&(btrace->size));
+ return BTRACE_ERR_NONE;
+ }
+
+ internal_error (__FILE__, __LINE__, _("Unkown btrace read type."));
+}
+
+
/* See linux-btrace.h. */
enum btrace_error
@@ -924,6 +1349,14 @@ linux_read_btrace (struct btrace_data *btrace,
btrace->variant.pt.size = 0;
return linux_read_pt (&btrace->variant.pt, tinfo, type);
+
+ case BTRACE_FORMAT_ETM:
+ /* We read btrace in arm CoreSight ETM Trace format. */
+ btrace->format = BTRACE_FORMAT_ETM;
+ btrace->variant.etm.data = NULL;
+ btrace->variant.etm.size = 0;
+
+ return linux_read_etm (&btrace->variant.etm, tinfo, type);
}
internal_error (__FILE__, __LINE__, _("Unkown branch trace format."));
diff --git a/gdb/nat/linux-btrace.h b/gdb/nat/linux-btrace.h
index 607182da144..3038d2f45a0 100644
--- a/gdb/nat/linux-btrace.h
+++ b/gdb/nat/linux-btrace.h
@@ -78,6 +78,22 @@ struct btrace_tinfo_pt
/* The trace perf event buffer. */
struct perf_event_buffer pt;
};
+
+/* Branch trace target information for ARM CoreSight ETM Trace. */
+struct btrace_tinfo_etm
+{
+ /* The Linux perf_event configuration for collecting the branch trace. */
+ struct perf_event_attr attr;
+
+ /* The perf event file. */
+ int file;
+
+ /* The perf event configuration page. */
+ volatile struct perf_event_mmap_page *header;
+
+ /* The trace perf event buffer. */
+ struct perf_event_buffer etm;
+};
#endif /* HAVE_LINUX_PERF_EVENT_H */
/* Branch trace target information per thread. */
@@ -98,6 +114,9 @@ struct btrace_target_info
/* CONF.FORMAT == BTRACE_FORMAT_PT. */
struct btrace_tinfo_pt pt;
+
+ /* CONF.FORMAT == BTRACE_FORMAT_ETM. */
+ struct btrace_tinfo_etm etm;
} variant;
#endif /* HAVE_LINUX_PERF_EVENT_H */
};
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 5/8] fix issue: gdb hangs in the command following a commad returning with TARGET_WAITKIND_NO_HISTORY
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
` (3 preceding siblings ...)
2021-03-11 2:50 ` [PATCH v2 4/8] start/stop btrace with coresight etm and collect etm buffer on linux os Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 6/8] add support for coresight btrace via remote protocol Zied Guermazi
` (2 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch fixes an issue observed with btrace when replaying the execution.
The issue was observed on ARMv7 processors.
To reproduce the issue needs to replay in forward direction
until he reaches the end of history, then replay backwards
(e.g a reverse-next) and then replay forwards. gdb hangs and the user
can not issue new commands.
gdb/ChangeLog
* infrun.c (set_step_over_info): add debug print.
(handle_inferior_event): clear step over info
in case TARGET_WAITKIND_NO_HISTORY
---
gdb/ChangeLog | 6 ++++++
gdb/infrun.c | 3 ++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d22ec8b5976..d4ed6fe0255 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * infrun.c (set_step_over_info): add debug print.
+ (handle_inferior_event): clear step over info
+ in case TARGET_WAITKIND_NO_HISTORY
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* nat/linux-btrace.h (btrace_tinfo_etm): New.
diff --git a/gdb/infrun.c b/gdb/infrun.c
index a271220b261..9c2522376f2 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -1308,6 +1308,7 @@ set_step_over_info (const address_space *aspace, CORE_ADDR address,
int nonsteppable_watchpoint_p,
int thread)
{
+ infrun_debug_printf ("setting step over info");
step_over_info.aspace = aspace;
step_over_info.address = address;
step_over_info.nonsteppable_watchpoint_p = nonsteppable_watchpoint_p;
@@ -5536,7 +5537,7 @@ handle_inferior_event (struct execution_control_state *ecs)
delete_just_stopped_threads_single_step_breakpoints ();
ecs->event_thread->suspend.stop_pc
= regcache_read_pc (get_thread_regcache (inferior_thread ()));
-
+ clear_step_over_info ();
if (handle_stop_requested (ecs))
return;
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 6/8] add support for coresight btrace via remote protocol
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
` (4 preceding siblings ...)
2021-03-11 2:50 ` [PATCH v2 5/8] fix issue: gdb hangs in the command following a commad returning with TARGET_WAITKIND_NO_HISTORY Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 7/8] adapt btrace testcases for arm target Zied Guermazi
2021-03-11 2:50 ` [PATCH 8/8] document btrace support for arm targets using coresight etm traces Zied Guermazi
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch extends the remote protocol to use ARM CoreSight traces for btrace.
This patch adds the capabilities enumeration as well as the required protocol
extentions for configuring traces collection, starting and stopping tracing,
and transferring the traces as well as the parameters needed for decoding them.
gdb/ChangeLog
* btrace.c (check_xml_btrace_version): add version 1.1
* btrace.c (parse_xml_btrace_etm_config_source_config_cpu_etmv4_config):
New.
* btrace.c (parse_xml_btrace_etm_config_source_config_cpu_etmv3_config):
New.
* btrace.c (parse_xml_btrace_etm_config_source_config_cpu_etm_config):
New.
* btrace.c (parse_xml_btrace_etm_config_source_config): New.
* btrace.c (dump_config): New.
* btrace.c (parse_xml_btrace_etm_config_source_config_end): New.
* btrace.c (parse_xml_btrace_etm_config_sink_config): New.
* btrace.c (parse_xml_btrace_etm_raw): New.
* btrace.c (parse_xml_btrace_etm): New.
* btrace.c (parse_xml_btrace_conf_etm): New.
* btrace.dtd: add etm data and decoding parameters.
* btrace-conf.dtd: add etm configuration.
* remote.c (remote_target::btrace_sync_conf): add etm configuration.
* remote.c(remote_target::enable_btrace): add coresight etm.
* remote.c (_initialize_remote): add etm related packets.
gdbserver/ChangeLog
* configure.srv: add btrace for aarch64*-*-linux* and arm*-*-linux*.
* linux-low.c (linux_low_encode_etm_config): New.
* linux-low.c (linux_process_target::read_btrace): encode CoreSight
traces and relative decoding parameters.
* linux-low.c (linux_process_target::read_btrace_conf): encode
CoreSight configuration.
* server.cc (handle_btrace_enable_etm): New.
* server.cc (handle_btrace_general_set): add etm handling.
* server.cc (handle_btrace_conf_general_set): add etm handling.
* server.cc (supported_btrace_packets): add etm related packets.
---
gdb/ChangeLog | 19 ++
gdb/btrace.c | 371 ++++++++++++++++++++++++++++++++++-
gdb/features/btrace-conf.dtd | 10 +-
gdb/features/btrace.dtd | 38 +++-
gdb/remote.c | 66 ++++++-
gdbserver/ChangeLog | 12 ++
gdbserver/configure.srv | 4 +
gdbserver/linux-low.cc | 103 +++++++++-
gdbserver/server.cc | 34 +++-
9 files changed, 645 insertions(+), 12 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d4ed6fe0255..76b413c3857 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,22 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * btrace.c (check_xml_btrace_version): add version 1.1
+ (parse_xml_btrace_etm_config_source_config_cpu_etmv4_config): New.
+ (parse_xml_btrace_etm_config_source_config_cpu_etmv3_config): New.
+ (parse_xml_btrace_etm_config_source_config_cpu_etm_config): New.
+ (parse_xml_btrace_etm_config_source_config): New.
+ (dump_config): New.
+ (parse_xml_btrace_etm_config_source_config_end): New.
+ (parse_xml_btrace_etm_config_sink_config): New.
+ (parse_xml_btrace_etm_raw): New.
+ (parse_xml_btrace_etm): New.
+ (parse_xml_btrace_conf_etm): New.
+ * btrace.dtd: add etm data and decoding parameters.
+ * btrace-conf.dtd: add etm configuration.
+ * remote.c (remote_target::btrace_sync_conf): add etm configuration.
+ (remote_target::enable_btrace): add coresight etm.
+ (_initialize_remote): add etm related packets.
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* infrun.c (set_step_over_info): add debug print.
diff --git a/gdb/btrace.c b/gdb/btrace.c
index 4d1bd96379e..b639981de3e 100644
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -2629,7 +2629,7 @@ check_xml_btrace_version (struct gdb_xml_parser *parser,
const char *version
= (const char *) xml_find_attribute (attributes, "version")->value.get ();
- if (strcmp (version, "1.0") != 0)
+ if ((strcmp (version, "1.0") != 0) && (strcmp (version, "1.1") != 0))
gdb_xml_error (parser, _("Unsupported btrace version: \"%s\""), version);
}
@@ -2764,6 +2764,250 @@ parse_xml_btrace_pt (struct gdb_xml_parser *parser,
btrace->variant.pt.size = 0;
}
+/* Parse a btrace etm "cpu-etm-config-etmv4_config" xml record. */
+
+static void
+parse_xml_btrace_etm_config_source_config_cpu_etmv4_config (
+ struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+ cs_etm_trace_params *etm_trace_params;
+
+ DEBUG ("parse_xml_btrace_etm_config_source_config_cpu_etmv4_config");
+
+ btrace = (struct btrace_data *) user_data;
+ etm_trace_params = & (btrace->variant.etm.config.etm_trace_params->back ());
+
+ struct gdb_xml_value *reg_idr0;
+ reg_idr0
+ = xml_find_attribute (attributes, "reg_idr0");
+
+ struct gdb_xml_value *reg_idr1;
+ reg_idr1
+ = xml_find_attribute (attributes, "reg_idr1");
+
+ struct gdb_xml_value *reg_idr2;
+ reg_idr2
+ = xml_find_attribute (attributes, "reg_idr2");
+
+ struct gdb_xml_value *reg_idr8;
+ reg_idr8
+ = xml_find_attribute (attributes, "reg_idr8");
+
+ struct gdb_xml_value *reg_configr;
+ reg_configr
+ = xml_find_attribute (attributes, "reg_configr");
+
+ struct gdb_xml_value *reg_traceidr;
+ reg_traceidr
+ = xml_find_attribute (attributes, "reg_traceidr");
+
+ etm_trace_params->etmv4.reg_idr0
+ = (unsigned int) *(ULONGEST *) reg_idr0->value.get ();
+ etm_trace_params->etmv4.reg_idr1
+ = (unsigned int) *(ULONGEST *) reg_idr1->value.get ();
+ etm_trace_params->etmv4.reg_idr2
+ = (unsigned int) *(ULONGEST *) reg_idr2->value.get ();
+ etm_trace_params->etmv4.reg_idr8
+ = (unsigned int) *(ULONGEST *) reg_idr8->value.get ();
+ etm_trace_params->etmv4.reg_configr
+ = (unsigned int) *(ULONGEST *) reg_configr->value.get ();
+ etm_trace_params->etmv4.reg_traceidr
+ = (unsigned int) *(ULONGEST *) reg_traceidr->value.get ();
+
+}
+
+/* Parse a btrace etm "cpu-etm-config-etmv3_config" xml record. */
+
+static void
+parse_xml_btrace_etm_config_source_config_cpu_etmv3_config (
+ struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+ cs_etm_trace_params *etm_trace_params;
+
+ DEBUG ("parse_xml_btrace_etm_config_source_config_cpu_etmv3_config");
+
+ btrace = (struct btrace_data *) user_data;
+ etm_trace_params = & (btrace->variant.etm.config.etm_trace_params->back ());
+
+ struct gdb_xml_value *reg_ctrl;
+ reg_ctrl
+ = xml_find_attribute (attributes, "reg_ctrl");
+
+ struct gdb_xml_value *reg_trc_id;
+ reg_trc_id
+ = xml_find_attribute (attributes, "reg_trc_id");
+
+ struct gdb_xml_value *reg_ccer;
+ reg_ccer
+ = xml_find_attribute (attributes, "reg_ccer");
+
+ struct gdb_xml_value *reg_idr;
+ reg_idr
+ = xml_find_attribute (attributes, "reg_idr");
+
+ etm_trace_params->etmv3.reg_ctrl
+ = (unsigned int) *(ULONGEST *) reg_ctrl->value.get ();
+ etm_trace_params->etmv3.reg_trc_id
+ = (unsigned int) *(ULONGEST *) reg_trc_id->value.get ();
+ etm_trace_params->etmv3.reg_ccer
+ = (unsigned int) *(ULONGEST *) reg_ccer->value.get ();
+ etm_trace_params->etmv3.reg_idr
+ = (unsigned int) *(ULONGEST *) reg_idr->value.get ();
+}
+
+
+/* Parse a btrace etm "cpu-etm-config" xml record. */
+
+static void
+parse_xml_btrace_etm_config_source_config_cpu_etm_config (
+ struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+ cs_etm_trace_params etm_trace_params;
+
+ DEBUG ("parse_xml_btrace_etm_config_source_config_cpu_etm_config");
+
+ btrace = (struct btrace_data *) user_data;
+
+ struct gdb_xml_value *arch_ver;
+ arch_ver
+ = xml_find_attribute (attributes, "arch_ver");
+
+ struct gdb_xml_value *core_prof;
+ core_prof
+ = xml_find_attribute (attributes, "core_prof");
+
+ struct gdb_xml_value *protocol;
+ protocol
+ = xml_find_attribute (attributes, "protocol");
+
+ etm_trace_params.arch_ver = (int) *(ULONGEST *) arch_ver->value.get ();
+ etm_trace_params.core_profile = (int) *(ULONGEST *) core_prof->value.get ();
+ etm_trace_params.protocol = (int) *(ULONGEST *) protocol->value.get ();
+
+ btrace->variant.etm.config.etm_trace_params->push_back (etm_trace_params);
+}
+
+/* Parse a btrace etm "source-config" xml record. */
+
+static void
+parse_xml_btrace_etm_config_source_config (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+ struct gdb_xml_value *trace_id;
+
+ DEBUG ("parse_xml_btrace_etm_config_source_config");
+ btrace = (struct btrace_data *) user_data;
+
+ trace_id = xml_find_attribute (attributes, "trace_id");
+ if (trace_id != NULL)
+ btrace->variant.etm.trace_id
+ = (unsigned int) *(ULONGEST *) trace_id->value.get ();
+ btrace->variant.etm.config.etm_trace_params
+ = new std::vector<cs_etm_trace_params>;
+}
+
+/* Get the number of cpus. */
+static void
+parse_xml_btrace_etm_config_source_config_end (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, const char *body_text)
+{
+ struct btrace_data *btrace;
+
+ DEBUG ("parse_xml_btrace_etm_config_source_config_end");
+ btrace = (struct btrace_data *) user_data;
+
+ btrace->variant.etm.config.num_cpu
+ = btrace->variant.etm.config.etm_trace_params->size ();
+}
+
+/* Parse a btrace etm "sink-config" xml record. */
+
+static void
+parse_xml_btrace_etm_config_sink_config (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+
+ DEBUG ("parse_xml_btrace_etm_config_sink_config");
+
+ btrace = (struct btrace_data *) user_data;
+
+ struct gdb_xml_value *formatted;
+ formatted = xml_find_attribute (attributes, "formatted");
+
+ struct gdb_xml_value *fsyncs;
+ fsyncs = xml_find_attribute (attributes, "fsyncs");
+
+ struct gdb_xml_value *hsyncs;
+ hsyncs = xml_find_attribute (attributes, "hsyncs");
+
+ struct gdb_xml_value *frame_aligned;
+ frame_aligned = xml_find_attribute (attributes, "frame_aligned");
+
+ struct gdb_xml_value *reset_on_4x_sync;
+ reset_on_4x_sync = xml_find_attribute (attributes, "reset_on_4x_sync");
+
+ btrace->variant.etm.config.etm_decoder_params.formatted
+ = (uint8_t) *(ULONGEST *) formatted->value.get ();
+ btrace->variant.etm.config.etm_decoder_params.fsyncs
+ = (uint8_t) *(ULONGEST *) fsyncs->value.get ();
+ btrace->variant.etm.config.etm_decoder_params.hsyncs
+ = (uint8_t) *(ULONGEST *) hsyncs->value.get ();
+ btrace->variant.etm.config.etm_decoder_params.frame_aligned
+ = (uint8_t) *(ULONGEST *) frame_aligned->value.get ();
+ btrace->variant.etm.config.etm_decoder_params.reset_on_4x_sync
+ = (uint8_t) *(ULONGEST *) reset_on_4x_sync->value.get ();
+}
+
+
+/* Parse a btrace etm "raw" xml record. */
+
+static void
+parse_xml_btrace_etm_raw (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, const char *body_text)
+{
+ struct btrace_data *btrace;
+ DEBUG ("parse_xml_btrace_etm_raw");
+ btrace = (struct btrace_data *) user_data;
+ parse_xml_raw (parser, body_text, &btrace->variant.etm.data,
+ &btrace->variant.etm.size);
+}
+
+/* Parse a btrace "etm" xml record. */
+
+static void
+parse_xml_btrace_etm (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_data *btrace;
+ DEBUG ("parse_xml_btrace_etm");
+ btrace = (struct btrace_data *) user_data;
+ btrace->format = BTRACE_FORMAT_ETM;
+ btrace->variant.etm.data = NULL;
+ btrace->variant.etm.size = 0;
+}
+
static const struct gdb_xml_attribute block_attributes[] = {
{ "begin", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
{ "end", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
@@ -2791,6 +3035,91 @@ static const struct gdb_xml_element btrace_pt_children[] = {
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
+static const struct gdb_xml_attribute
+btrace_etm_config_source_config_cpu_config_etmv3_config_attributes[] = {
+ { "reg_ctrl", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_trc_id", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_ccer", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_idr", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_attribute
+btrace_etm_config_source_config_cpu_config_etmv4_config_attributes[] = {
+ { "reg_idr0", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_idr1", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_idr2", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_idr8", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_configr", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reg_traceidr", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element
+btrace_etm_config_source_config_cpu_etm_config_children[] = {
+ { "etmv3-config",
+ btrace_etm_config_source_config_cpu_config_etmv3_config_attributes,
+ NULL, GDB_XML_EF_OPTIONAL,
+ parse_xml_btrace_etm_config_source_config_cpu_etmv3_config, NULL },
+ { "etmv4-config",
+ btrace_etm_config_source_config_cpu_config_etmv4_config_attributes,
+ NULL, GDB_XML_EF_OPTIONAL,
+ parse_xml_btrace_etm_config_source_config_cpu_etmv4_config, NULL },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_attribute
+btrace_etm_config_source_config_etm_config_attributes[] = {
+ { "cpu_id", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "arch_ver", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "core_prof", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "protocol", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element
+btrace_etm_config_source_config_children[] = {
+ { "cpu-etm-config", btrace_etm_config_source_config_etm_config_attributes,
+ btrace_etm_config_source_config_cpu_etm_config_children,
+ GDB_XML_EF_REPEATABLE,
+ parse_xml_btrace_etm_config_source_config_cpu_etm_config, NULL },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_attribute
+btrace_etm_config_sink_config_attributes[] = {
+ { "formatted", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "fsyncs", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "hsyncs", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "frame_aligned", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "reset_on_4x_sync", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_attribute
+btrace_etm_config_source_config_attributes[] = {
+ { "trace_id", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element btrace_etm_config_children[] = {
+ { "source-config", btrace_etm_config_source_config_attributes,
+ btrace_etm_config_source_config_children, GDB_XML_EF_NONE,
+ parse_xml_btrace_etm_config_source_config,
+ parse_xml_btrace_etm_config_source_config_end },
+ { "sink-config", btrace_etm_config_sink_config_attributes, NULL,
+ GDB_XML_EF_NONE, parse_xml_btrace_etm_config_sink_config, NULL },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+static const struct gdb_xml_element btrace_etm_children[] = {
+ { "etm-config", NULL, btrace_etm_config_children, GDB_XML_EF_NONE, NULL,
+ NULL },
+ { "raw", NULL, NULL, GDB_XML_EF_OPTIONAL, NULL,
+ parse_xml_btrace_etm_raw },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
static const struct gdb_xml_attribute btrace_attributes[] = {
{ "version", GDB_XML_AF_NONE, NULL, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
@@ -2799,8 +3128,10 @@ static const struct gdb_xml_attribute btrace_attributes[] = {
static const struct gdb_xml_element btrace_children[] = {
{ "block", block_attributes, NULL,
GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, parse_xml_btrace_block, NULL },
- { "pt", NULL, btrace_pt_children, GDB_XML_EF_OPTIONAL, parse_xml_btrace_pt,
- NULL },
+ { "pt", NULL, btrace_pt_children, GDB_XML_EF_OPTIONAL,
+ parse_xml_btrace_pt, NULL },
+ { "etm", NULL, btrace_etm_children, GDB_XML_EF_OPTIONAL,
+ parse_xml_btrace_etm, NULL },
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
@@ -2881,6 +3212,32 @@ parse_xml_btrace_conf_pt (struct gdb_xml_parser *parser,
conf->pt.size = (unsigned int) *(ULONGEST *) size->value.get ();
}
+/* Parse a btrace-conf "etm" xml record. */
+
+static void
+parse_xml_btrace_conf_etm (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data,
+ std::vector<gdb_xml_value> &attributes)
+{
+ struct btrace_config *conf;
+ struct gdb_xml_value *size;
+
+ DEBUG ("parse_xml_btrace_conf_etm");
+ conf = (struct btrace_config *) user_data;
+ conf->format = BTRACE_FORMAT_ETM;
+ conf->etm.size = 0;
+
+ size = xml_find_attribute (attributes, "size");
+ if (size != NULL)
+ conf->etm.size = (unsigned int) *(ULONGEST *) size->value.get ();
+
+ struct gdb_xml_value *sink;
+ sink = xml_find_attribute (attributes, "sink");
+ if (sink != NULL)
+ conf->etm.sink = (char*) sink->value.get ();
+}
+
static const struct gdb_xml_attribute btrace_conf_pt_attributes[] = {
{ "size", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
@@ -2891,11 +3248,19 @@ static const struct gdb_xml_attribute btrace_conf_bts_attributes[] = {
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
};
+static const struct gdb_xml_attribute btrace_conf_etm_attributes[] = {
+ { "size", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
+ { "sink", GDB_XML_AF_OPTIONAL, NULL, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
static const struct gdb_xml_element btrace_conf_children[] = {
{ "bts", btrace_conf_bts_attributes, NULL, GDB_XML_EF_OPTIONAL,
parse_xml_btrace_conf_bts, NULL },
{ "pt", btrace_conf_pt_attributes, NULL, GDB_XML_EF_OPTIONAL,
parse_xml_btrace_conf_pt, NULL },
+ { "etm", btrace_conf_etm_attributes, NULL, GDB_XML_EF_OPTIONAL,
+ parse_xml_btrace_conf_etm, NULL },
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
diff --git a/gdb/features/btrace-conf.dtd b/gdb/features/btrace-conf.dtd
index 4b060bb408c..7334d035f34 100644
--- a/gdb/features/btrace-conf.dtd
+++ b/gdb/features/btrace-conf.dtd
@@ -4,11 +4,17 @@
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. -->
-<!ELEMENT btrace-conf (bts?, pt?)>
-<!ATTLIST btrace-conf version CDATA #FIXED "1.0">
+<!ELEMENT btrace-conf (bts?, pt?, etm?)>
+<!ATTLIST btrace-conf version (1.0|1.1) #REQUIRED>
<!ELEMENT bts EMPTY>
<!ATTLIST bts size CDATA #IMPLIED>
<!ELEMENT pt EMPTY>
<!ATTLIST pt size CDATA #IMPLIED>
+
+<!ELEMENT etm EMPTY>
+<!ATTLIST etm size CDATA #IMPLIED
+ sink CDATA #IMPLIED
+ filter CDATA #IMPLIED
+ config CDATA #IMPLIED>
diff --git a/gdb/features/btrace.dtd b/gdb/features/btrace.dtd
index 9bb930d7d3b..001b77f35d0 100644
--- a/gdb/features/btrace.dtd
+++ b/gdb/features/btrace.dtd
@@ -4,8 +4,8 @@
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. -->
-<!ELEMENT btrace (block* | pt)>
-<!ATTLIST btrace version CDATA #FIXED "1.0">
+<!ELEMENT btrace (block* | pt | etm)>
+<!ATTLIST btrace version (1.0|1.1) #REQUIRED>
<!ELEMENT block EMPTY>
<!ATTLIST block begin CDATA #REQUIRED
@@ -21,4 +21,38 @@
model CDATA #REQUIRED
stepping CDATA #REQUIRED>
+<!ELEMENT etm (etm-config?, raw?)>
+
+<!ELEMENT etm-config (source-config, sink-config)>
+
+<!ELEMENT source-config (cpu-etm-config+)>
+<!ATTLIST source-config trace_id CDATA #IMPLIED>
+
+<!ELEMENT cpu-etm-config (etmv3-config|etmv4-config)>
+<!ATTLIST cpu-etm-config cpu_id CDATA #REQUIRED
+ arch_ver CDATA #REQUIRED
+ core_prof CDATA #REQUIRED
+ protocol CDATA #REQUIRED>
+
+<!ELEMENT etmv3-config EMPTY>
+<!ATTLIST etmv3-config reg_ctrl CDATA #REQUIRED
+ reg_trc_id CDATA #REQUIRED
+ reg_ccer CDATA #REQUIRED
+ reg_idr CDATA #REQUIRED>
+
+<!ELEMENT etmv4-config EMPTY>
+<!ATTLIST etmv4-config reg_idr0 CDATA #REQUIRED
+ reg_idr1 CDATA #REQUIRED
+ reg_idr2 CDATA #REQUIRED
+ reg_idr8 CDATA #REQUIRED
+ reg_configr CDATA #REQUIRED
+ reg_traceidr CDATA #REQUIRED>
+
+<!ELEMENT sink-config EMPTY>
+<!ATTLIST sink-config formatted CDATA #REQUIRED
+ fsyncs CDATA #REQUIRED
+ hsyncs CDATA #REQUIRED
+ frame_aligned CDATA #REQUIRED
+ reset_on_4x_sync CDATA #REQUIRED>
+
<!ELEMENT raw (#PCDATA)>
diff --git a/gdb/remote.c b/gdb/remote.c
index 2c85bdcffbc..e6f0aeceb11 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -2167,6 +2167,15 @@ enum {
/* Support TARGET_WAITKIND_NO_RESUMED. */
PACKET_no_resumed,
+ /* Support for the Qbtrace-etm packet. */
+ PACKET_Qbtrace_etm,
+
+ /* Support for the Qbtrace-conf:etm:size packet. */
+ PACKET_Qbtrace_conf_etm_size,
+
+ /* Support for the Qbtrace-conf:etm:sink packet. */
+ PACKET_Qbtrace_conf_etm_sink,
+
PACKET_MAX
};
@@ -5302,6 +5311,12 @@ static const struct protocol_feature remote_protocol_features[] = {
{ "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported },
{ "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents },
{ "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed },
+ { "Qbtrace:etm", PACKET_DISABLE, remote_supported_packet,
+ PACKET_Qbtrace_etm },
+ { "Qbtrace-conf:etm:size", PACKET_DISABLE, remote_supported_packet,
+ PACKET_Qbtrace_conf_etm_size },
+ { "Qbtrace-conf:etm:sink", PACKET_DISABLE, remote_supported_packet,
+ PACKET_Qbtrace_conf_etm_sink },
};
static char *remote_support_xml;
@@ -13882,6 +13897,28 @@ remote_target::btrace_sync_conf (const btrace_config *conf)
rs->btrace_config.pt.size = conf->pt.size;
}
+
+ packet = &remote_protocol_packets[PACKET_Qbtrace_conf_etm_size];
+ if (packet_config_support (packet) == PACKET_ENABLE
+ && conf->etm.size != rs->btrace_config.etm.size)
+ {
+ pos = buf;
+ pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name,
+ conf->etm.size);
+
+ putpkt (buf);
+ getpkt (&rs->buf, 0);
+
+ if (packet_ok (buf, packet) == PACKET_ERROR)
+ {
+ if (buf[0] == 'E' && buf[1] == '.')
+ error (_("Failed to configure the trace buffer size: %s"), buf + 2);
+ else
+ error (_("Failed to configure the trace buffer size."));
+ }
+
+ rs->btrace_config.etm.size = conf->etm.size;
+ }
}
/* Read the current thread's btrace configuration from the target and
@@ -13903,7 +13940,7 @@ remote_target::remote_btrace_maybe_reopen ()
{
struct remote_state *rs = get_remote_state ();
int btrace_target_pushed = 0;
-#if !defined (HAVE_LIBIPT)
+#if !defined (HAVE_LIBIPT) || !defined (HAVE_LIBOPENCSD_C_API)
int warned = 0;
#endif
@@ -13938,6 +13975,20 @@ remote_target::remote_btrace_maybe_reopen ()
}
#endif /* !defined (HAVE_LIBIPT) */
+#if !defined (HAVE_LIBOPENCSD_C_API)
+ if (rs->btrace_config.format == BTRACE_FORMAT_ETM)
+ {
+ if (!warned)
+ {
+ warned = 1;
+ warning (_("Target is recording using ARM CoreSight Processor "
+ "Trace but support was disabled at compile time."));
+ }
+
+ continue;
+ }
+#endif /* !defined (HAVE_LIBOPENCSD_C_API) */
+
/* Push target, once, but before anything else happens. This way our
changes to the threads will be cleaned up by unpushing the target
in case btrace_read_config () throws. */
@@ -13975,6 +14026,10 @@ remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf)
case BTRACE_FORMAT_PT:
packet = &remote_protocol_packets[PACKET_Qbtrace_pt];
break;
+
+ case BTRACE_FORMAT_ETM:
+ packet = &remote_protocol_packets[PACKET_Qbtrace_etm];
+ break;
}
if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE)
@@ -14883,6 +14938,15 @@ Show the maximum size of the address (in bits) in a memory packet."), NULL,
add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed],
"N stop reply", "no-resumed-stop-reply", 0);
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_etm],
+ "Qbtrace:etm", "enable-btrace-etm", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_etm_size],
+ "Qbtrace-conf:etm:size", "btrace-conf-etm-size", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_etm_sink],
+ "Qbtrace-conf:etm:sink", "btrace-conf-etm-sink", 0);
+
/* Assert that we've registered "set remote foo-packet" commands
for all packet configs. */
{
diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index bafdc7685c3..8e4eebf3ac8 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,3 +1,15 @@
+2021-02-06 Zied Guermazi <zied.guermazi@trande.de>
+
+ * configure.srv: add btrace for aarch64*-*-linux* and arm*-*-linux*.
+ * linux-low.cc (linux_low_encode_etm_config): New.
+ (linux_process_target::read_btrace): encode CoreSight
+ traces and relative decoding parameters.
+ (linux_process_target::read_btrace_conf): encode CoreSight config.
+ * server.cc (handle_btrace_enable_etm): New.
+ (handle_btrace_general_set): add etm handling.
+ (handle_btrace_conf_general_set): add etm handling.
+ (supported_btrace_packets): add etm related packets.
+
2021-02-01 Zied Guermazi <zied.guermazi@trande.de>
* gdbserver/configure: Regenerated.
diff --git a/gdbserver/configure.srv b/gdbserver/configure.srv
index 833ad27c4c4..5f900d80d66 100644
--- a/gdbserver/configure.srv
+++ b/gdbserver/configure.srv
@@ -54,12 +54,14 @@ case "${gdbserver_host}" in
srv_tgtobj="$srv_tgtobj arch/aarch64.o"
srv_tgtobj="$srv_tgtobj linux-aarch64-tdesc.o"
srv_tgtobj="$srv_tgtobj nat/aarch64-sve-linux-ptrace.o"
+ srv_tgtobj="${srv_tgtobj} nat/linux-btrace.o"
srv_tgtobj="${srv_tgtobj} $srv_linux_obj"
srv_linux_regsets=yes
srv_linux_thread_db=yes
ipa_obj="linux-aarch64-ipa.o"
ipa_obj="${ipa_obj} linux-aarch64-tdesc-ipa.o"
ipa_obj="${ipa_obj} arch/aarch64-ipa.o"
+ srv_linux_btrace=yes
;;
aarch64*-*-netbsd*) srv_regobj=""
srv_tgtobj="netbsd-low.o netbsd-aarch64-low.o fork-child.o"
@@ -82,6 +84,7 @@ case "${gdbserver_host}" in
srv_tgtobj="$srv_tgtobj linux-arm-tdesc.o"
srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
srv_tgtobj="$srv_tgtobj linux-aarch32-tdesc.o"
+ srv_tgtobj="${srv_tgtobj} nat/linux-btrace.o"
srv_tgtobj="${srv_tgtobj} arch/aarch32.o"
srv_tgtobj="${srv_tgtobj} arch/arm.o"
srv_tgtobj="${srv_tgtobj} arch/arm-linux.o"
@@ -89,6 +92,7 @@ case "${gdbserver_host}" in
srv_linux_usrregs=yes
srv_linux_regsets=yes
srv_linux_thread_db=yes
+ srv_linux_btrace=yes
;;
i[34567]86-*-cygwin*) srv_regobj=""
srv_tgtobj="x86-low.o nat/x86-dregs.o win32-low.o"
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 0baac013129..ab5f78042bd 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -6994,6 +6994,75 @@ linux_low_encode_pt_config (struct buffer *buffer,
buffer_grow_str (buffer, "</pt-config>\n");
}
+/* Encode ARM CoreSight Processor Trace configuration. */
+
+static void
+linux_low_encode_etm_config (struct buffer *buffer,
+ const struct btrace_data_etm_config *config)
+{
+ int architecture;
+ buffer_grow_str (buffer, "<etm-config>\n");
+ buffer_grow_str (buffer, "<source-config>\n");
+ for (int i=0; i< config->num_cpu;i++)
+ {
+ if ((config->etm_trace_params->at (i).protocol == CS_ETM_PROTO_ETMV3)
+ ||(config->etm_trace_params->at (i).protocol == CS_ETM_PROTO_PTM))
+ {
+ architecture = ARCHITECTURE_V7;
+ }
+ else if (config->etm_trace_params->at (i).protocol == CS_ETM_PROTO_ETMV4i)
+ {
+ architecture = ARCHITECTURE_V8;
+ }
+ else
+ {
+ architecture = ARCHITECTURE_UNKNOWN;
+ }
+
+ buffer_xml_printf (buffer,"<cpu-etm-config arch_ver=\"0x%x\" "
+ "core_prof=\"0x%x\" cpu_id=\"0x%x\" protocol=\"0x%x\">\n",
+ architecture, PROFILE_CORTEX_A,
+ i, config->etm_trace_params->at (i).protocol);
+ if (architecture == ARCHITECTURE_V7)
+ {
+
+ buffer_xml_printf (buffer,
+ "<etmv3-config reg_idr=\"0x%x\" reg_ctrl=\"0x%x\" "
+ "reg_ccer=\"0x%x\" reg_trc_id=\"0x%x\"/>\n",
+ config->etm_trace_params->at (i).etmv3.reg_idr,
+ config->etm_trace_params->at (i).etmv3.reg_ctrl,
+ config->etm_trace_params->at (i).etmv3.reg_ccer,
+ config->etm_trace_params->at (i).etmv3.reg_trc_id);
+ }
+ if (architecture == ARCHITECTURE_V8)
+ {
+ buffer_xml_printf (buffer,
+ "<etmv4-config reg_idr0=\"0x%x\" reg_idr1=\"0x%x\" "
+ "reg_idr2=\"0x%x\" reg_idr8=\"0x%x\" "
+ "reg_configr=\"0x%x\" reg_traceidr=\"0x%x\"/>\n",
+ config->etm_trace_params->at (i).etmv4.reg_idr0,
+ config->etm_trace_params->at (i).etmv4.reg_idr1,
+ config->etm_trace_params->at (i).etmv4.reg_idr2,
+ config->etm_trace_params->at (i).etmv4.reg_idr8,
+ config->etm_trace_params->at (i).etmv4.reg_configr,
+ config->etm_trace_params->at (i).etmv4.reg_traceidr);
+ }
+ buffer_xml_printf (buffer,"</cpu-etm-config>\n");
+
+ }
+ buffer_grow_str (buffer,"</source-config>\n");
+ buffer_xml_printf (buffer,
+ "<sink-config formatted=\"0x%x\" "
+ "fsyncs=\"0x%x\" hsyncs=\"0x%x\" "
+ "frame_aligned=\"0x%x\" reset_on_4x_sync=\"0x%x\"/>\n",
+ config->etm_decoder_params.formatted,
+ config->etm_decoder_params.fsyncs,
+ config->etm_decoder_params.hsyncs,
+ config->etm_decoder_params.frame_aligned,
+ config->etm_decoder_params.reset_on_4x_sync);
+ buffer_grow_str (buffer,"</etm-config>\n");
+}
+
/* Encode a raw buffer. */
static void
@@ -7048,7 +7117,7 @@ linux_process_target::read_btrace (btrace_target_info *tinfo,
case BTRACE_FORMAT_BTS:
buffer_grow_str (buffer, "<!DOCTYPE btrace SYSTEM \"btrace.dtd\">\n");
- buffer_grow_str (buffer, "<btrace version=\"1.0\">\n");
+ buffer_grow_str (buffer, "<btrace version=\"1.1\">\n");
for (const btrace_block &block : *btrace.variant.bts.blocks)
buffer_xml_printf (buffer, "<block begin=\"0x%s\" end=\"0x%s\"/>\n",
@@ -7059,7 +7128,7 @@ linux_process_target::read_btrace (btrace_target_info *tinfo,
case BTRACE_FORMAT_PT:
buffer_grow_str (buffer, "<!DOCTYPE btrace SYSTEM \"btrace.dtd\">\n");
- buffer_grow_str (buffer, "<btrace version=\"1.0\">\n");
+ buffer_grow_str (buffer, "<btrace version=\"1.1\">\n");
buffer_grow_str (buffer, "<pt>\n");
linux_low_encode_pt_config (buffer, &btrace.variant.pt.config);
@@ -7071,6 +7140,20 @@ linux_process_target::read_btrace (btrace_target_info *tinfo,
buffer_grow_str0 (buffer, "</btrace>\n");
break;
+ case BTRACE_FORMAT_ETM:
+ buffer_grow_str (buffer, "<!DOCTYPE btrace SYSTEM \"btrace.dtd\">\n");
+ buffer_grow_str (buffer, "<btrace version=\"1.1\">\n");
+ buffer_grow_str (buffer, "<etm>\n");
+
+ linux_low_encode_etm_config (buffer, &btrace.variant.etm.config);
+
+ linux_low_encode_raw (buffer, btrace.variant.etm.data,
+ btrace.variant.etm.size);
+
+ buffer_grow_str (buffer, "</etm>\n");
+ buffer_grow_str0 (buffer, "</btrace>\n");
+ break;
+
default:
buffer_grow_str0 (buffer, "E.Unsupported Trace Format.");
return -1;
@@ -7088,7 +7171,7 @@ linux_process_target::read_btrace_conf (const btrace_target_info *tinfo,
const struct btrace_config *conf;
buffer_grow_str (buffer, "<!DOCTYPE btrace-conf SYSTEM \"btrace-conf.dtd\">\n");
- buffer_grow_str (buffer, "<btrace-conf version=\"1.0\">\n");
+ buffer_grow_str (buffer, "<btrace-conf version=\"1.1\">\n");
conf = linux_btrace_conf (tinfo);
if (conf != NULL)
@@ -7109,6 +7192,20 @@ linux_process_target::read_btrace_conf (const btrace_target_info *tinfo,
buffer_xml_printf (buffer, " size=\"0x%x\"", conf->pt.size);
buffer_xml_printf (buffer, "/>\n");
break;
+
+ case BTRACE_FORMAT_ETM:
+ buffer_xml_printf (buffer, "<etm");
+ buffer_xml_printf (buffer, " size=\"0x%x\"", conf->etm.size);
+ if (conf->etm.sink !=NULL)
+ {
+ buffer_xml_printf (buffer, " sink=\"%s\"", conf->etm.sink);
+ }
+ else
+ {
+ buffer_xml_printf (buffer, " sink=\"default\"");
+ }
+ buffer_xml_printf (buffer, "/>\n");
+ break;
}
}
diff --git a/gdbserver/server.cc b/gdbserver/server.cc
index a5497e93cee..d270cf7d370 100644
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -424,6 +424,18 @@ handle_btrace_enable_pt (struct thread_info *thread)
thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf);
}
+/* Handle btrace enabling in ARM CoreSight Trace format. */
+
+static void
+handle_btrace_enable_etm (struct thread_info *thread)
+{
+ if (thread->btrace != NULL)
+ error (_("Btrace already enabled."));
+
+ current_btrace_conf.format = BTRACE_FORMAT_ETM;
+ thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf);
+}
+
/* Handle btrace disabling. */
static void
@@ -473,10 +485,12 @@ handle_btrace_general_set (char *own_buf)
handle_btrace_enable_bts (thread);
else if (strcmp (op, "pt") == 0)
handle_btrace_enable_pt (thread);
+ else if (strcmp (op, "etm") == 0)
+ handle_btrace_enable_etm (thread);
else if (strcmp (op, "off") == 0)
handle_btrace_disable (thread);
else
- error (_("Bad Qbtrace operation. Use bts, pt, or off."));
+ error (_("Bad Qbtrace operation. Use bts, pt, etm, or off."));
write_ok (own_buf);
}
@@ -546,6 +560,21 @@ handle_btrace_conf_general_set (char *own_buf)
current_btrace_conf.pt.size = (unsigned int) size;
}
+ else if (strncmp (op, "etm:size=", strlen ("etm:size=")) == 0)
+ {
+ unsigned long size;
+ char *endp = NULL;
+
+ errno = 0;
+ size = strtoul (op + strlen ("etm:size="), &endp, 16);
+ if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX)
+ {
+ strcpy (own_buf, "E.Bad size value.");
+ return -1;
+ }
+
+ current_btrace_conf.etm.size = (unsigned int) size;
+ }
else
{
strcpy (own_buf, "E.Bad Qbtrace configuration option.");
@@ -2084,6 +2113,9 @@ supported_btrace_packets (char *buf)
strcat (buf, ";Qbtrace-conf:bts:size+");
strcat (buf, ";Qbtrace:pt+");
strcat (buf, ";Qbtrace-conf:pt:size+");
+ strcat (buf, ";Qbtrace:etm+");
+ strcat (buf, ";Qbtrace-conf:etm:size+");
+ strcat (buf, ";Qbtrace-conf:etm:sink+");
strcat (buf, ";Qbtrace:off+");
strcat (buf, ";qXfer:btrace:read+");
strcat (buf, ";qXfer:btrace-conf:read+");
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v2 7/8] adapt btrace testcases for arm target
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
` (5 preceding siblings ...)
2021-03-11 2:50 ` [PATCH v2 6/8] add support for coresight btrace via remote protocol Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 2:50 ` [PATCH 8/8] document btrace support for arm targets using coresight etm traces Zied Guermazi
7 siblings, 0 replies; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch extends the test suite for btrace to cover using
ARM CoreSight traces.
gdb/ChangeLog
* testsuite/lib/gdb.exp (skip_btrace_tests): enable btrace tests
for arm.
* testsuite/gdb.btrace/buffer-size.exp: enable btrace tests
and adapt test for arm.
* testsuite/gdb.btrace/delta.exp (check_trace): enable btrace tests
and adapt test for arm.
* testsuite/gdb.btrace/instruction_history.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/instruction_history.S: renamed to
x86-instruction_history.S
* testsuite/gdb.btrace/aarch64-instruction_history.S: New.
* testsuite/gdb.btrace/arm-instruction_history.S: New
* testsuite/gdb.btrace/non-stop.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/reconnect.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/record_goto.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/aarch64-record_goto.S: New.
* testsuite/gdb.btrace/arm-record_goto.S: New.
* testsuite/gdb.btrace/stepi.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/tailcall.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/aarch64-tailcall.S: New.
* testsuite/gdb.btrace/arm-tailcall.S: New.
* testsuite/gdb.btrace/tailcall-only.exp: enable btrace tests
and adapt tests for arm.
* testsuite/gdb.btrace/aarch64-tailcall-only.S: New.
* testsuite/gdb.btrace/arm-tailcall-only.S: New.
---
gdb/ChangeLog | 33 ++
.../gdb.btrace/aarch64-instruction_history.S | 31 ++
.../gdb.btrace/aarch64-record_goto.S | 400 ++++++++++++++
.../gdb.btrace/aarch64-tailcall-only.S | 517 ++++++++++++++++++
gdb/testsuite/gdb.btrace/aarch64-tailcall.S | 409 ++++++++++++++
.../gdb.btrace/arm-instruction_history.S | 31 ++
gdb/testsuite/gdb.btrace/arm-record_goto.S | 433 +++++++++++++++
gdb/testsuite/gdb.btrace/arm-tailcall-only.S | 504 +++++++++++++++++
gdb/testsuite/gdb.btrace/arm-tailcall.S | 391 +++++++++++++
gdb/testsuite/gdb.btrace/buffer-size.exp | 15 +-
gdb/testsuite/gdb.btrace/delta.exp | 10 +
.../gdb.btrace/instruction_history.exp | 107 +++-
gdb/testsuite/gdb.btrace/non-stop.exp | 60 +-
gdb/testsuite/gdb.btrace/record_goto.exp | 241 ++++++--
gdb/testsuite/gdb.btrace/stepi.exp | 95 +++-
gdb/testsuite/gdb.btrace/tailcall-only.exp | 8 +
gdb/testsuite/gdb.btrace/tailcall.exp | 46 +-
...on_history.S => x86-instruction_history.S} | 0
gdb/testsuite/lib/gdb.exp | 2 +-
19 files changed, 3215 insertions(+), 118 deletions(-)
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-instruction_history.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-record_goto.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-tailcall-only.S
create mode 100644 gdb/testsuite/gdb.btrace/aarch64-tailcall.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-instruction_history.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-record_goto.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-tailcall-only.S
create mode 100644 gdb/testsuite/gdb.btrace/arm-tailcall.S
rename gdb/testsuite/gdb.btrace/{instruction_history.S => x86-instruction_history.S} (100%)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 76b413c3857..a1975363767 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,36 @@
+2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
+
+ * testsuite/lib/gdb.exp (skip_btrace_tests): enable btrace tests
+ for arm.
+ * testsuite/gdb.btrace/buffer-size.exp: enable btrace tests
+ and adapt test for arm.
+ * testsuite/gdb.btrace/delta.exp (check_trace): enable btrace tests
+ and adapt test for arm.
+ * testsuite/gdb.btrace/instruction_history.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/instruction_history.S: renamed to
+ x86-instruction_history.S
+ * testsuite/gdb.btrace/aarch64-instruction_history.S: New.
+ * testsuite/gdb.btrace/arm-instruction_history.S: New
+ * testsuite/gdb.btrace/non-stop.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/reconnect.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/record_goto.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/aarch64-record_goto.S: New.
+ * testsuite/gdb.btrace/arm-record_goto.S: New.
+ * testsuite/gdb.btrace/stepi.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/tailcall.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/aarch64-tailcall.S: New.
+ * testsuite/gdb.btrace/arm-tailcall.S: New.
+ * testsuite/gdb.btrace/tailcall-only.exp: enable btrace tests
+ and adapt tests for arm.
+ * testsuite/gdb.btrace/aarch64-tailcall-only.S: New.
+ * testsuite/gdb.btrace/arm-tailcall-only.S: New.
+
2021-02-25 Zied Guermazi <zied.guermazi@trande.de>
* btrace.c (check_xml_btrace_version): add version 1.1
diff --git a/gdb/testsuite/gdb.btrace/aarch64-instruction_history.S b/gdb/testsuite/gdb.btrace/aarch64-instruction_history.S
new file mode 100644
index 00000000000..66490e3b23e
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/aarch64-instruction_history.S
@@ -0,0 +1,31 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2021 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+.arch armv8-a
+.text
+.globl loop
+.type loop, %function
+loop:
+ mov x0, #2 /* bp.1 */
+L1:
+ cmp x0, #0
+ beq L2
+ subs x0, x0, #1
+ b L1
+L2:
+ ret /* bp.2 */
+
+
diff --git a/gdb/testsuite/gdb.btrace/aarch64-record_goto.S b/gdb/testsuite/gdb.btrace/aarch64-record_goto.S
new file mode 100644
index 00000000000..be832eeb4c1
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/aarch64-record_goto.S
@@ -0,0 +1,400 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2021 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv8 machine using:
+ gcc -S -dA -g record_goto.c -o aarch64-record_goto.S */
+
+ .arch armv8-a
+ .file "record_goto.c"
+ .text
+.Ltext0:
+ .align 2
+ .global fun1
+ //.tune generic
+ .type fun1, %function
+fun1:
+.LFB0:
+ .file 1 "record_goto.c"
+ // record_goto.c:22:1
+ .loc 1 22 1
+ .cfi_startproc
+// BLOCK 2 seq:0
+// PRED: ENTRY (FALLTHRU)
+ // record_goto.c:23:1
+ .loc 1 23 1
+ nop
+// SUCC: EXIT [always]
+ ret
+ .cfi_endproc
+.LFE0:
+ .size fun1, .-fun1
+ .align 2
+ .global fun2
+ .type fun2, %function
+fun2:
+.LFB1:
+ // record_goto.c:27:1
+ .loc 1 27 1
+ .cfi_startproc
+// BLOCK 2 seq:0
+// PRED: ENTRY (FALLTHRU)
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // record_goto.c:28:3
+ .loc 1 28 3
+ bl fun1
+ // record_goto.c:29:1
+ .loc 1 29 1
+ nop
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always]
+ ret
+ .cfi_endproc
+.LFE1:
+ .size fun2, .-fun2
+ .align 2
+ .global fun3
+ .type fun3, %function
+fun3:
+.LFB2:
+ // record_goto.c:33:1
+ .loc 1 33 1
+ .cfi_startproc
+// BLOCK 2 seq:0
+// PRED: ENTRY (FALLTHRU)
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // record_goto.c:34:3
+ .loc 1 34 3
+ bl fun1
+ // record_goto.c:35:3
+ .loc 1 35 3
+ bl fun2
+ // record_goto.c:36:1
+ .loc 1 36 1
+ nop
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always]
+ ret
+ .cfi_endproc
+.LFE2:
+ .size fun3, .-fun3
+ .align 2
+ .global fun4
+ .type fun4, %function
+fun4:
+.LFB3:
+ // record_goto.c:40:1
+ .loc 1 40 1
+ .cfi_startproc
+// BLOCK 2 seq:0
+// PRED: ENTRY (FALLTHRU)
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // record_goto.c:41:3
+ .loc 1 41 3
+ bl fun1
+ // record_goto.c:42:3
+ .loc 1 42 3
+ bl fun2
+ // record_goto.c:43:3
+ .loc 1 43 3
+ bl fun3
+ // record_goto.c:44:1
+ .loc 1 44 1
+ nop
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always]
+ ret
+ .cfi_endproc
+.LFE3:
+ .size fun4, .-fun4
+ .align 2
+ .global main
+ .type main, %function
+main:
+.LFB4:
+ // record_goto.c:48:1
+ .loc 1 48 1
+ .cfi_startproc
+// BLOCK 2 seq:0
+// PRED: ENTRY (FALLTHRU)
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // record_goto.c:49:3
+ .loc 1 49 3
+ bl fun4
+ // record_goto.c:50:10
+ .loc 1 50 10
+ mov w0, 0
+ // record_goto.c:51:1
+ .loc 1 51 1
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always]
+ ret
+ .cfi_endproc
+.LFE4:
+ .size main, .-main
+.Letext0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .4byte 0xb7 // Length of Compilation Unit Info
+ .2byte 0x4 // DWARF version number
+ .4byte .Ldebug_abbrev0 // Offset Into Abbrev. Section
+ .byte 0x8 // Pointer Size (in bytes)
+ .uleb128 0x1 // (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF4 // DW_AT_producer: "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -fasynchronous-unwind-tables"
+ .byte 0xc // DW_AT_language
+ .4byte .LASF5 // DW_AT_name: "record_goto.c"
+ .4byte .LASF6 // DW_AT_comp_dir: "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .8byte .Ltext0 // DW_AT_low_pc
+ .8byte .Letext0-.Ltext0 // DW_AT_high_pc
+ .4byte .Ldebug_line0 // DW_AT_stmt_list
+ .uleb128 0x2 // (DIE (0x2d) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF7 // DW_AT_name: "main"
+ .byte 0x1 // DW_AT_decl_file (record_goto.c)
+ .byte 0x2f // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x4b // DW_AT_type
+ .8byte .LFB4 // DW_AT_low_pc
+ .8byte .LFE4-.LFB4 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x3 // (DIE (0x4b) DW_TAG_base_type)
+ .byte 0x4 // DW_AT_byte_size
+ .byte 0x5 // DW_AT_encoding
+ .ascii "int\0" // DW_AT_name
+ .uleb128 0x4 // (DIE (0x52) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF0 // DW_AT_name: "fun4"
+ .byte 0x1 // DW_AT_decl_file (record_goto.c)
+ .byte 0x27 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .8byte .LFB3 // DW_AT_low_pc
+ .8byte .LFE3-.LFB3 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x4 // (DIE (0x6c) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF1 // DW_AT_name: "fun3"
+ .byte 0x1 // DW_AT_decl_file (record_goto.c)
+ .byte 0x20 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .8byte .LFB2 // DW_AT_low_pc
+ .8byte .LFE2-.LFB2 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x4 // (DIE (0x86) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF2 // DW_AT_name: "fun2"
+ .byte 0x1 // DW_AT_decl_file (record_goto.c)
+ .byte 0x1a // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .8byte .LFB1 // DW_AT_low_pc
+ .8byte .LFE1-.LFB1 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x5 // (DIE (0xa0) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF3 // DW_AT_name: "fun1"
+ .byte 0x1 // DW_AT_decl_file (record_goto.c)
+ .byte 0x15 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .8byte .LFB0 // DW_AT_low_pc
+ .8byte .LFE0-.LFB0 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .byte 0 // end of children of DIE 0xb
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 // (abbrev code)
+ .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x25 // (DW_AT_producer)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x13 // (DW_AT_language)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x1b // (DW_AT_comp_dir)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x10 // (DW_AT_stmt_list)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0 // DW_children_no
+ .uleb128 0x3f // (DW_AT_external)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2116 // (DW_AT_GNU_all_tail_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 // (abbrev code)
+ .uleb128 0x24 // (TAG: DW_TAG_base_type)
+ .byte 0 // DW_children_no
+ .uleb128 0xb // (DW_AT_byte_size)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3e // (DW_AT_encoding)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0 // DW_children_no
+ .uleb128 0x3f // (DW_AT_external)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2116 // (DW_AT_GNU_all_tail_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0 // DW_children_no
+ .uleb128 0x3f // (DW_AT_external)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_aranges,"",@progbits
+ .4byte 0x2c // Length of Address Ranges Info
+ .2byte 0x2 // DWARF aranges version
+ .4byte .Ldebug_info0 // Offset of Compilation Unit Info
+ .byte 0x8 // Size of Address
+ .byte 0 // Size of Segment Descriptor
+ .2byte 0 // Pad to 16 byte boundary
+ .2byte 0
+ .8byte .Ltext0 // Address
+ .8byte .Letext0-.Ltext0 // Length
+ .8byte 0
+ .8byte 0
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",@progbits,1
+.LASF5:
+ .string "record_goto.c"
+.LASF4:
+ .string "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -fasynchronous-unwind-tables"
+.LASF3:
+ .string "fun1"
+.LASF2:
+ .string "fun2"
+.LASF0:
+ .string "fun4"
+.LASF6:
+ .string "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+.LASF7:
+ .string "main"
+.LASF1:
+ .string "fun3"
+ .ident "GCC: (Debian 10.2.1-3) 10.2.1 20201224"
+ .section .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.btrace/aarch64-tailcall-only.S b/gdb/testsuite/gdb.btrace/aarch64-tailcall-only.S
new file mode 100644
index 00000000000..1822385b85f
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/aarch64-tailcall-only.S
@@ -0,0 +1,517 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2016-2021 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv8 machine using:
+ gcc -m32 -S -O2 -dA -g tailcall-only.c -o aarch64-tailcall-only.S
+ */
+
+ .arch armv8-a
+ .file "tailcall-only.c"
+ .text
+.Ltext0:
+ .align 2
+ .p2align 4,,11
+ //.tune generic
+ .type bar_1, %function
+bar_1:
+.LFB0:
+ .file 1 "tailcall-only.c"
+ // tailcall-only.c:22:1
+ .loc 1 22 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall-only.c:23:3
+ .loc 1 23 3 view .LVU1
+ // tailcall-only.c:24:1
+ .loc 1 24 1 is_stmt 0 view .LVU2
+ mov w0, 42
+// SUCC: EXIT [always] count:1073741824 (estimated locally)
+ ret
+ .cfi_endproc
+.LFE0:
+ .size bar_1, .-bar_1
+ .align 2
+ .p2align 4,,11
+ .type bar, %function
+bar:
+.LFB1:
+ // tailcall-only.c:28:1
+ .loc 1 28 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall-only.c:29:3
+ .loc 1 29 3 view .LVU4
+// SUCC: EXIT [always] count:1073741824 (estimated locally) (ABNORMAL,SIBCALL)
+ // tailcall-only.c:29:10
+ .loc 1 29 10 is_stmt 0 view .LVU5
+ b bar_1
+.LVL0:
+ .cfi_endproc
+.LFE1:
+ .size bar, .-bar
+ .align 2
+ .p2align 4,,11
+ .type foo_1, %function
+foo_1:
+.LFB2:
+ // tailcall-only.c:34:1
+ .loc 1 34 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall-only.c:35:3
+ .loc 1 35 3 view .LVU7
+// SUCC: EXIT [always] count:1073741824 (estimated locally) (ABNORMAL,SIBCALL)
+ // tailcall-only.c:35:10
+ .loc 1 35 10 is_stmt 0 view .LVU8
+ b bar
+.LVL1:
+ .cfi_endproc
+.LFE2:
+ .size foo_1, .-foo_1
+ .align 2
+ .p2align 4,,11
+ .type foo, %function
+foo:
+.LFB3:
+ // tailcall-only.c:40:1
+ .loc 1 40 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall-only.c:41:3
+ .loc 1 41 3 view .LVU10
+// SUCC: EXIT [always] count:1073741824 (estimated locally) (ABNORMAL,SIBCALL)
+ // tailcall-only.c:41:10
+ .loc 1 41 10 is_stmt 0 view .LVU11
+ b foo_1
+.LVL2:
+ .cfi_endproc
+.LFE3:
+ .size foo, .-foo
+ .section .text.startup,"ax",@progbits
+ .align 2
+ .p2align 4,,11
+ .global main
+ .type main, %function
+main:
+.LFB4:
+ // tailcall-only.c:46:1
+ .loc 1 46 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall-only.c:47:3
+ .loc 1 47 3 view .LVU13
+ // tailcall-only.c:49:3
+ .loc 1 49 3 view .LVU14
+ // tailcall-only.c:46:1
+ .loc 1 46 1 is_stmt 0 view .LVU15
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // tailcall-only.c:49:12
+ .loc 1 49 12 view .LVU16
+ bl foo
+.LVL3:
+ // DEBUG answer => x0
+ // tailcall-only.c:50:3
+ .loc 1 50 3 is_stmt 1 view .LVU17
+ // DEBUG answer => x0+0x1
+ // tailcall-only.c:52:3
+ .loc 1 52 3 view .LVU18
+ // tailcall-only.c:53:1
+ .loc 1 53 1 is_stmt 0 view .LVU19
+ add w0, w0, 1
+.LVL4:
+ // DEBUG answer => x0
+ // tailcall-only.c:53:1
+ .loc 1 53 1 view .LVU20
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always] count:1073741824 (estimated locally)
+ ret
+ .cfi_endproc
+.LFE4:
+ .size main, .-main
+ .text
+.Letext0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .4byte 0x11f // Length of Compilation Unit Info
+ .2byte 0x4 // DWARF version number
+ .4byte .Ldebug_abbrev0 // Offset Into Abbrev. Section
+ .byte 0x8 // Pointer Size (in bytes)
+ .uleb128 0x1 // (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF1 // DW_AT_producer: "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -O2 -fasynchronous-unwind-tables"
+ .byte 0xc // DW_AT_language
+ .4byte .LASF2 // DW_AT_name: "tailcall-only.c"
+ .4byte .LASF3 // DW_AT_comp_dir: "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .4byte .Ldebug_ranges0+0 // DW_AT_ranges
+ .8byte 0 // DW_AT_low_pc
+ .4byte .Ldebug_line0 // DW_AT_stmt_list
+ .uleb128 0x2 // (DIE (0x29) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF4 // DW_AT_name: "main"
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x2d // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB4 // DW_AT_low_pc
+ .8byte .LFE4-.LFB4 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0x6d // DW_AT_sibling
+ .uleb128 0x3 // (DIE (0x4b) DW_TAG_variable)
+ .4byte .LASF5 // DW_AT_name: "answer"
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x2f // DW_AT_decl_line
+ .byte 0x7 // DW_AT_decl_column
+ .4byte 0x6d // DW_AT_type
+ .4byte .LLST0 // DW_AT_location
+ .4byte .LVUS0 // DW_AT_GNU_locviews
+ .uleb128 0x4 // (DIE (0x5f) DW_TAG_GNU_call_site)
+ .8byte .LVL3 // DW_AT_low_pc
+ .4byte 0x74 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0x29
+ .uleb128 0x5 // (DIE (0x6d) DW_TAG_base_type)
+ .byte 0x4 // DW_AT_byte_size
+ .byte 0x5 // DW_AT_encoding
+ .ascii "int\0" // DW_AT_name
+ .uleb128 0x6 // (DIE (0x74) DW_TAG_subprogram)
+ .ascii "foo\0" // DW_AT_name
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x27 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB3 // DW_AT_low_pc
+ .8byte .LFE3-.LFB3 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0xa4 // DW_AT_sibling
+ .uleb128 0x7 // (DIE (0x96) DW_TAG_GNU_call_site)
+ .8byte .LVL2 // DW_AT_low_pc
+ // DW_AT_GNU_tail_call
+ .4byte 0xa4 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0x74
+ .uleb128 0x8 // (DIE (0xa4) DW_TAG_subprogram)
+ .4byte .LASF0 // DW_AT_name: "foo_1"
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x21 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB2 // DW_AT_low_pc
+ .8byte .LFE2-.LFB2 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0xd4 // DW_AT_sibling
+ .uleb128 0x7 // (DIE (0xc6) DW_TAG_GNU_call_site)
+ .8byte .LVL1 // DW_AT_low_pc
+ // DW_AT_GNU_tail_call
+ .4byte 0xd4 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0xa4
+ .uleb128 0x6 // (DIE (0xd4) DW_TAG_subprogram)
+ .ascii "bar\0" // DW_AT_name
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x1b // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB1 // DW_AT_low_pc
+ .8byte .LFE1-.LFB1 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0x104 // DW_AT_sibling
+ .uleb128 0x7 // (DIE (0xf6) DW_TAG_GNU_call_site)
+ .8byte .LVL0 // DW_AT_low_pc
+ // DW_AT_GNU_tail_call
+ .4byte 0x104 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0xd4
+ .uleb128 0x9 // (DIE (0x104) DW_TAG_subprogram)
+ .4byte .LASF6 // DW_AT_name: "bar_1"
+ .byte 0x1 // DW_AT_decl_file (tailcall-only.c)
+ .byte 0x15 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB0 // DW_AT_low_pc
+ .8byte .LFE0-.LFB0 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .byte 0 // end of children of DIE 0xb
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 // (abbrev code)
+ .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x25 // (DW_AT_producer)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x13 // (DW_AT_language)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x1b // (DW_AT_comp_dir)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x55 // (DW_AT_ranges)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x10 // (DW_AT_stmt_list)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x3f // (DW_AT_external)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x1 // (DW_AT_sibling)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 // (abbrev code)
+ .uleb128 0x34 // (TAG: DW_TAG_variable)
+ .byte 0 // DW_children_no
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x2 // (DW_AT_location)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .uleb128 0x2137 // (DW_AT_GNU_locviews)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 // (abbrev code)
+ .uleb128 0x4109 // (TAG: DW_TAG_GNU_call_site)
+ .byte 0 // DW_children_no
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x31 // (DW_AT_abstract_origin)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 // (abbrev code)
+ .uleb128 0x24 // (TAG: DW_TAG_base_type)
+ .byte 0 // DW_children_no
+ .uleb128 0xb // (DW_AT_byte_size)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3e // (DW_AT_encoding)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x6 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x1 // (DW_AT_sibling)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x7 // (abbrev code)
+ .uleb128 0x4109 // (TAG: DW_TAG_GNU_call_site)
+ .byte 0 // DW_children_no
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x2115 // (DW_AT_GNU_tail_call)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x31 // (DW_AT_abstract_origin)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x8 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x1 // (DW_AT_sibling)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x9 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0 // DW_children_no
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_loc,"",@progbits
+.Ldebug_loc0:
+.LVUS0:
+ .uleb128 .LVU17 // View list begin (*.LVUS0)
+ .uleb128 .LVU18 // View list end (*.LVUS0)
+ .uleb128 .LVU18 // View list begin (*.LVUS0)
+ .uleb128 .LVU20 // View list end (*.LVUS0)
+ .uleb128 .LVU20 // View list begin (*.LVUS0)
+ .uleb128 0 // View list end (*.LVUS0)
+.LLST0:
+ .8byte .LVL3 // Location list begin address (*.LLST0)
+ .8byte .LVL3 // Location list end address (*.LLST0)
+ .2byte 0x1 // Location expression size
+ .byte 0x50 // DW_OP_reg0
+ .8byte .LVL3 // Location list begin address (*.LLST0)
+ .8byte .LVL4 // Location list end address (*.LLST0)
+ .2byte 0x3 // Location expression size
+ .byte 0x70 // DW_OP_breg0
+ .sleb128 1
+ .byte 0x9f // DW_OP_stack_value
+ .8byte .LVL4 // Location list begin address (*.LLST0)
+ .8byte .LFE4 // Location list end address (*.LLST0)
+ .2byte 0x1 // Location expression size
+ .byte 0x50 // DW_OP_reg0
+ .8byte 0 // Location list terminator begin (*.LLST0)
+ .8byte 0 // Location list terminator end (*.LLST0)
+ .section .debug_aranges,"",@progbits
+ .4byte 0x3c // Length of Address Ranges Info
+ .2byte 0x2 // DWARF aranges version
+ .4byte .Ldebug_info0 // Offset of Compilation Unit Info
+ .byte 0x8 // Size of Address
+ .byte 0 // Size of Segment Descriptor
+ .2byte 0 // Pad to 16 byte boundary
+ .2byte 0
+ .8byte .Ltext0 // Address
+ .8byte .Letext0-.Ltext0 // Length
+ .8byte .LFB4 // Address
+ .8byte .LFE4-.LFB4 // Length
+ .8byte 0
+ .8byte 0
+ .section .debug_ranges,"",@progbits
+.Ldebug_ranges0:
+ .8byte .Ltext0 // Offset 0
+ .8byte .Letext0
+ .8byte .LFB4 // Offset 0x10
+ .8byte .LFE4
+ .8byte 0
+ .8byte 0
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",@progbits,1
+.LASF6:
+ .string "bar_1"
+.LASF2:
+ .string "tailcall-only.c"
+.LASF3:
+ .string "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+.LASF5:
+ .string "answer"
+.LASF4:
+ .string "main"
+.LASF1:
+ .string "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -O2 -fasynchronous-unwind-tables"
+.LASF0:
+ .string "foo_1"
+ .ident "GCC: (Debian 10.2.1-3) 10.2.1 20201224"
+ .section .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.btrace/aarch64-tailcall.S b/gdb/testsuite/gdb.btrace/aarch64-tailcall.S
new file mode 100644
index 00000000000..a6b01cbccea
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/aarch64-tailcall.S
@@ -0,0 +1,409 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2021 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv8 machine using:
+ gcc -S -O2 -dA -g tailcall.c -o aarch64-tailcall.S */
+
+ .arch armv8-a
+ .file "tailcall.c"
+ .text
+.Ltext0:
+ .align 2
+ .p2align 4,,11
+ //.tune generic
+ .type bar, %function
+bar:
+.LFB0:
+ .file 1 "tailcall.c"
+ // tailcall.c:22:1
+ .loc 1 22 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall.c:23:3
+ .loc 1 23 3 view .LVU1
+ // tailcall.c:24:1
+ .loc 1 24 1 is_stmt 0 view .LVU2
+ mov w0, 42
+// SUCC: EXIT [always] count:1073741824 (estimated locally)
+ ret
+ .cfi_endproc
+.LFE0:
+ .size bar, .-bar
+ .align 2
+ .p2align 4,,11
+ .type foo, %function
+foo:
+.LFB1:
+ // tailcall.c:28:1
+ .loc 1 28 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall.c:29:3
+ .loc 1 29 3 view .LVU4
+// SUCC: EXIT [always] count:1073741824 (estimated locally) (ABNORMAL,SIBCALL)
+ // tailcall.c:29:10
+ .loc 1 29 10 is_stmt 0 view .LVU5
+ b bar
+.LVL0:
+ .cfi_endproc
+.LFE1:
+ .size foo, .-foo
+ .section .text.startup,"ax",@progbits
+ .align 2
+ .p2align 4,,11
+ .global main
+ .type main, %function
+main:
+.LFB2:
+ // tailcall.c:34:1
+ .loc 1 34 1 is_stmt 1 view -0
+ .cfi_startproc
+// BLOCK 2, count:1073741824 (estimated locally) seq:0
+// PRED: ENTRY [always] count:1073741824 (estimated locally) (FALLTHRU)
+ // tailcall.c:35:3
+ .loc 1 35 3 view .LVU7
+ // tailcall.c:37:3
+ .loc 1 37 3 view .LVU8
+ // tailcall.c:34:1
+ .loc 1 34 1 is_stmt 0 view .LVU9
+ stp x29, x30, [sp, -16]!
+ .cfi_def_cfa_offset 16
+ .cfi_offset 29, -16
+ .cfi_offset 30, -8
+ mov x29, sp
+ // tailcall.c:37:12
+ .loc 1 37 12 view .LVU10
+ bl foo
+.LVL1:
+ // DEBUG answer => x0
+ // tailcall.c:38:3
+ .loc 1 38 3 is_stmt 1 view .LVU11
+ // DEBUG answer => x0+0x1
+ // tailcall.c:40:3
+ .loc 1 40 3 view .LVU12
+ // tailcall.c:41:1
+ .loc 1 41 1 is_stmt 0 view .LVU13
+ add w0, w0, 1
+.LVL2:
+ // DEBUG answer => x0
+ // tailcall.c:41:1
+ .loc 1 41 1 view .LVU14
+ ldp x29, x30, [sp], 16
+ .cfi_restore 30
+ .cfi_restore 29
+ .cfi_def_cfa_offset 0
+// SUCC: EXIT [always] count:1073741824 (estimated locally)
+ ret
+ .cfi_endproc
+.LFE2:
+ .size main, .-main
+ .text
+.Letext0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .4byte 0xbf // Length of Compilation Unit Info
+ .2byte 0x4 // DWARF version number
+ .4byte .Ldebug_abbrev0 // Offset Into Abbrev. Section
+ .byte 0x8 // Pointer Size (in bytes)
+ .uleb128 0x1 // (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF0 // DW_AT_producer: "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -O2 -fasynchronous-unwind-tables"
+ .byte 0xc // DW_AT_language
+ .4byte .LASF1 // DW_AT_name: "tailcall.c"
+ .4byte .LASF2 // DW_AT_comp_dir: "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .4byte .Ldebug_ranges0+0 // DW_AT_ranges
+ .8byte 0 // DW_AT_low_pc
+ .4byte .Ldebug_line0 // DW_AT_stmt_list
+ .uleb128 0x2 // (DIE (0x29) DW_TAG_subprogram)
+ // DW_AT_external
+ .4byte .LASF3 // DW_AT_name: "main"
+ .byte 0x1 // DW_AT_decl_file (tailcall.c)
+ .byte 0x21 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB2 // DW_AT_low_pc
+ .8byte .LFE2-.LFB2 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0x6d // DW_AT_sibling
+ .uleb128 0x3 // (DIE (0x4b) DW_TAG_variable)
+ .4byte .LASF4 // DW_AT_name: "answer"
+ .byte 0x1 // DW_AT_decl_file (tailcall.c)
+ .byte 0x23 // DW_AT_decl_line
+ .byte 0x7 // DW_AT_decl_column
+ .4byte 0x6d // DW_AT_type
+ .4byte .LLST0 // DW_AT_location
+ .4byte .LVUS0 // DW_AT_GNU_locviews
+ .uleb128 0x4 // (DIE (0x5f) DW_TAG_GNU_call_site)
+ .8byte .LVL1 // DW_AT_low_pc
+ .4byte 0x74 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0x29
+ .uleb128 0x5 // (DIE (0x6d) DW_TAG_base_type)
+ .byte 0x4 // DW_AT_byte_size
+ .byte 0x5 // DW_AT_encoding
+ .ascii "int\0" // DW_AT_name
+ .uleb128 0x6 // (DIE (0x74) DW_TAG_subprogram)
+ .ascii "foo\0" // DW_AT_name
+ .byte 0x1 // DW_AT_decl_file (tailcall.c)
+ .byte 0x1b // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB1 // DW_AT_low_pc
+ .8byte .LFE1-.LFB1 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .4byte 0xa4 // DW_AT_sibling
+ .uleb128 0x7 // (DIE (0x96) DW_TAG_GNU_call_site)
+ .8byte .LVL0 // DW_AT_low_pc
+ // DW_AT_GNU_tail_call
+ .4byte 0xa4 // DW_AT_abstract_origin
+ .byte 0 // end of children of DIE 0x74
+ .uleb128 0x8 // (DIE (0xa4) DW_TAG_subprogram)
+ .ascii "bar\0" // DW_AT_name
+ .byte 0x1 // DW_AT_decl_file (tailcall.c)
+ .byte 0x15 // DW_AT_decl_line
+ .byte 0x1 // DW_AT_decl_column
+ // DW_AT_prototyped
+ .4byte 0x6d // DW_AT_type
+ .8byte .LFB0 // DW_AT_low_pc
+ .8byte .LFE0-.LFB0 // DW_AT_high_pc
+ .uleb128 0x1 // DW_AT_frame_base
+ .byte 0x9c // DW_OP_call_frame_cfa
+ // DW_AT_GNU_all_call_sites
+ .byte 0 // end of children of DIE 0xb
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 // (abbrev code)
+ .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x25 // (DW_AT_producer)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x13 // (DW_AT_language)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x1b // (DW_AT_comp_dir)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x55 // (DW_AT_ranges)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x10 // (DW_AT_stmt_list)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x3f // (DW_AT_external)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x1 // (DW_AT_sibling)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 // (abbrev code)
+ .uleb128 0x34 // (TAG: DW_TAG_variable)
+ .byte 0 // DW_children_no
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0xe // (DW_FORM_strp)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x2 // (DW_AT_location)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .uleb128 0x2137 // (DW_AT_GNU_locviews)
+ .uleb128 0x17 // (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 // (abbrev code)
+ .uleb128 0x4109 // (TAG: DW_TAG_GNU_call_site)
+ .byte 0 // DW_children_no
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x31 // (DW_AT_abstract_origin)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 // (abbrev code)
+ .uleb128 0x24 // (TAG: DW_TAG_base_type)
+ .byte 0 // DW_children_no
+ .uleb128 0xb // (DW_AT_byte_size)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3e // (DW_AT_encoding)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x6 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0x1 // DW_children_yes
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x1 // (DW_AT_sibling)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x7 // (abbrev code)
+ .uleb128 0x4109 // (TAG: DW_TAG_GNU_call_site)
+ .byte 0 // DW_children_no
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x2115 // (DW_AT_GNU_tail_call)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x31 // (DW_AT_abstract_origin)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x8 // (abbrev code)
+ .uleb128 0x2e // (TAG: DW_TAG_subprogram)
+ .byte 0 // DW_children_no
+ .uleb128 0x3 // (DW_AT_name)
+ .uleb128 0x8 // (DW_FORM_string)
+ .uleb128 0x3a // (DW_AT_decl_file)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x3b // (DW_AT_decl_line)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x39 // (DW_AT_decl_column)
+ .uleb128 0xb // (DW_FORM_data1)
+ .uleb128 0x27 // (DW_AT_prototyped)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .uleb128 0x49 // (DW_AT_type)
+ .uleb128 0x13 // (DW_FORM_ref4)
+ .uleb128 0x11 // (DW_AT_low_pc)
+ .uleb128 0x1 // (DW_FORM_addr)
+ .uleb128 0x12 // (DW_AT_high_pc)
+ .uleb128 0x7 // (DW_FORM_data8)
+ .uleb128 0x40 // (DW_AT_frame_base)
+ .uleb128 0x18 // (DW_FORM_exprloc)
+ .uleb128 0x2117 // (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 // (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_loc,"",@progbits
+.Ldebug_loc0:
+.LVUS0:
+ .uleb128 .LVU11 // View list begin (*.LVUS0)
+ .uleb128 .LVU12 // View list end (*.LVUS0)
+ .uleb128 .LVU12 // View list begin (*.LVUS0)
+ .uleb128 .LVU14 // View list end (*.LVUS0)
+ .uleb128 .LVU14 // View list begin (*.LVUS0)
+ .uleb128 0 // View list end (*.LVUS0)
+.LLST0:
+ .8byte .LVL1 // Location list begin address (*.LLST0)
+ .8byte .LVL1 // Location list end address (*.LLST0)
+ .2byte 0x1 // Location expression size
+ .byte 0x50 // DW_OP_reg0
+ .8byte .LVL1 // Location list begin address (*.LLST0)
+ .8byte .LVL2 // Location list end address (*.LLST0)
+ .2byte 0x3 // Location expression size
+ .byte 0x70 // DW_OP_breg0
+ .sleb128 1
+ .byte 0x9f // DW_OP_stack_value
+ .8byte .LVL2 // Location list begin address (*.LLST0)
+ .8byte .LFE2 // Location list end address (*.LLST0)
+ .2byte 0x1 // Location expression size
+ .byte 0x50 // DW_OP_reg0
+ .8byte 0 // Location list terminator begin (*.LLST0)
+ .8byte 0 // Location list terminator end (*.LLST0)
+ .section .debug_aranges,"",@progbits
+ .4byte 0x3c // Length of Address Ranges Info
+ .2byte 0x2 // DWARF aranges version
+ .4byte .Ldebug_info0 // Offset of Compilation Unit Info
+ .byte 0x8 // Size of Address
+ .byte 0 // Size of Segment Descriptor
+ .2byte 0 // Pad to 16 byte boundary
+ .2byte 0
+ .8byte .Ltext0 // Address
+ .8byte .Letext0-.Ltext0 // Length
+ .8byte .LFB2 // Address
+ .8byte .LFE2-.LFB2 // Length
+ .8byte 0
+ .8byte 0
+ .section .debug_ranges,"",@progbits
+.Ldebug_ranges0:
+ .8byte .Ltext0 // Offset 0
+ .8byte .Letext0
+ .8byte .LFB2 // Offset 0x10
+ .8byte .LFE2
+ .8byte 0
+ .8byte 0
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",@progbits,1
+.LASF0:
+ .string "GNU C17 10.2.1 20201224 -mlittle-endian -mabi=lp64 -g -O2 -fasynchronous-unwind-tables"
+.LASF2:
+ .string "/home/linaro/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+.LASF4:
+ .string "answer"
+.LASF1:
+ .string "tailcall.c"
+.LASF3:
+ .string "main"
+ .ident "GCC: (Debian 10.2.1-3) 10.2.1 20201224"
+ .section .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.btrace/arm-instruction_history.S b/gdb/testsuite/gdb.btrace/arm-instruction_history.S
new file mode 100644
index 00000000000..e73ddaa9be9
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/arm-instruction_history.S
@@ -0,0 +1,31 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2021 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+.arm
+.text
+.globl loop
+.type loop, %function
+loop:
+ movs r0, #2 /* bp.1 */
+L1:
+ cmp r0, #0
+ beq L2
+ subs r0, r0, #1
+ b L1
+L2:
+ bx lr /* bp.2 */
+
diff --git a/gdb/testsuite/gdb.btrace/arm-record_goto.S b/gdb/testsuite/gdb.btrace/arm-record_goto.S
new file mode 100644
index 00000000000..2d3a2f0c8de
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/arm-record_goto.S
@@ -0,0 +1,433 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2019 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv7 machine using:
+ gcc -S -dA -g record_goto.c -o arm-record_goto.S */
+
+ .arch armv7-a
+ .eabi_attribute 28, 1 @ Tag_ABI_VFP_args
+ .eabi_attribute 20, 1 @ Tag_ABI_FP_denormal
+ .eabi_attribute 21, 1 @ Tag_ABI_FP_exceptions
+ .eabi_attribute 23, 3 @ Tag_ABI_FP_number_model
+ .eabi_attribute 24, 1 @ Tag_ABI_align8_needed
+ .eabi_attribute 25, 1 @ Tag_ABI_align8_preserved
+ .eabi_attribute 26, 2 @ Tag_ABI_enum_size
+ .eabi_attribute 30, 6 @ Tag_ABI_optimization_goals
+ .eabi_attribute 34, 1 @ Tag_CPU_unaligned_access
+ .eabi_attribute 18, 4 @ Tag_ABI_PCS_wchar_t
+ .file "record_goto.c"
+ .text
+.Ltext0:
+ .cfi_sections .debug_frame
+ .align 1
+ .global fun1
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type fun1, %function
+fun1:
+.LFB0:
+ .file 1 "record_goto.c"
+ @ record_goto.c:22
+ .loc 1 22 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 1, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 seq:0
+@ PRED: ENTRY (FALLTHRU)
+ push {r7}
+ .cfi_def_cfa_offset 4
+ .cfi_offset 7, -4
+ add r7, sp, #0
+ .cfi_def_cfa_register 7
+ @ record_goto.c:23
+ .loc 1 23 0
+ nop
+ mov sp, r7
+ .cfi_def_cfa_register 13
+ @ sp needed
+ ldr r7, [sp], #4
+ .cfi_restore 7
+ .cfi_def_cfa_offset 0
+@ SUCC: EXIT [100.0%]
+ bx lr
+ .cfi_endproc
+.LFE0:
+ .size fun1, .-fun1
+ .align 1
+ .global fun2
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type fun2, %function
+fun2:
+.LFB1:
+ @ record_goto.c:27
+ .loc 1 27 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 1, uses_anonymous_args = 0
+@ BLOCK 2 seq:0
+@ PRED: ENTRY (FALLTHRU)
+ push {r7, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 7, -8
+ .cfi_offset 14, -4
+ add r7, sp, #0
+ .cfi_def_cfa_register 7
+ @ record_goto.c:28
+ .loc 1 28 0
+ bl fun1(PLT)
+ @ record_goto.c:29
+ .loc 1 29 0
+ nop
+@ SUCC: EXIT [100.0%]
+ pop {r7, pc}
+ .cfi_endproc
+.LFE1:
+ .size fun2, .-fun2
+ .align 1
+ .global fun3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type fun3, %function
+fun3:
+.LFB2:
+ @ record_goto.c:33
+ .loc 1 33 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 1, uses_anonymous_args = 0
+@ BLOCK 2 seq:0
+@ PRED: ENTRY (FALLTHRU)
+ push {r7, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 7, -8
+ .cfi_offset 14, -4
+ add r7, sp, #0
+ .cfi_def_cfa_register 7
+ @ record_goto.c:34
+ .loc 1 34 0
+ bl fun1(PLT)
+ @ record_goto.c:35
+ .loc 1 35 0
+ bl fun2(PLT)
+ @ record_goto.c:36
+ .loc 1 36 0
+ nop
+@ SUCC: EXIT [100.0%]
+ pop {r7, pc}
+ .cfi_endproc
+.LFE2:
+ .size fun3, .-fun3
+ .align 1
+ .global fun4
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type fun4, %function
+fun4:
+.LFB3:
+ @ record_goto.c:40
+ .loc 1 40 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 1, uses_anonymous_args = 0
+@ BLOCK 2 seq:0
+@ PRED: ENTRY (FALLTHRU)
+ push {r7, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 7, -8
+ .cfi_offset 14, -4
+ add r7, sp, #0
+ .cfi_def_cfa_register 7
+ @ record_goto.c:41
+ .loc 1 41 0
+ bl fun1(PLT)
+ @ record_goto.c:42
+ .loc 1 42 0
+ bl fun2(PLT)
+ @ record_goto.c:43
+ .loc 1 43 0
+ bl fun3(PLT)
+ @ record_goto.c:44
+ .loc 1 44 0
+ nop
+@ SUCC: EXIT [100.0%]
+ pop {r7, pc}
+ .cfi_endproc
+.LFE3:
+ .size fun4, .-fun4
+ .align 1
+ .global main
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type main, %function
+main:
+.LFB4:
+ @ record_goto.c:48
+ .loc 1 48 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 1, uses_anonymous_args = 0
+@ BLOCK 2 seq:0
+@ PRED: ENTRY (FALLTHRU)
+ push {r7, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 7, -8
+ .cfi_offset 14, -4
+ add r7, sp, #0
+ .cfi_def_cfa_register 7
+ @ record_goto.c:49
+ .loc 1 49 0
+ bl fun4(PLT)
+ @ record_goto.c:50
+ .loc 1 50 0
+ movs r3, #0
+ @ record_goto.c:51
+ .loc 1 51 0
+ mov r0, r3
+@ SUCC: EXIT [100.0%]
+ pop {r7, pc}
+ .cfi_endproc
+.LFE4:
+ .size main, .-main
+.Letext0:
+ .section .debug_info,"",%progbits
+.Ldebug_info0:
+ .4byte 0x82 @ Length of Compilation Unit Info
+ .2byte 0x4 @ DWARF version number
+ .4byte .Ldebug_abbrev0 @ Offset Into Abbrev. Section
+ .byte 0x4 @ Pointer Size (in bytes)
+ .uleb128 0x1 @ (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF4 @ DW_AT_producer: "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -fstack-protector-strong"
+ .byte 0xc @ DW_AT_language
+ .4byte .LASF5 @ DW_AT_name: "record_goto.c"
+ .4byte .LASF6 @ DW_AT_comp_dir: "/home/ubuntu/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .4byte .Ltext0 @ DW_AT_low_pc
+ .4byte .Letext0-.Ltext0 @ DW_AT_high_pc
+ .4byte .Ldebug_line0 @ DW_AT_stmt_list
+ .uleb128 0x2 @ (DIE (0x25) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF7 @ DW_AT_name: "main"
+ .byte 0x1 @ DW_AT_decl_file (record_goto.c)
+ .byte 0x2f @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x3a @ DW_AT_type
+ .4byte .LFB4 @ DW_AT_low_pc
+ .4byte .LFE4-.LFB4 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x3 @ (DIE (0x3a) DW_TAG_base_type)
+ .byte 0x4 @ DW_AT_byte_size
+ .byte 0x5 @ DW_AT_encoding
+ .ascii "int\0" @ DW_AT_name
+ .uleb128 0x4 @ (DIE (0x41) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF0 @ DW_AT_name: "fun4"
+ .byte 0x1 @ DW_AT_decl_file (record_goto.c)
+ .byte 0x27 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte .LFB3 @ DW_AT_low_pc
+ .4byte .LFE3-.LFB3 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x4 @ (DIE (0x52) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF1 @ DW_AT_name: "fun3"
+ .byte 0x1 @ DW_AT_decl_file (record_goto.c)
+ .byte 0x20 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte .LFB2 @ DW_AT_low_pc
+ .4byte .LFE2-.LFB2 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x4 @ (DIE (0x63) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF2 @ DW_AT_name: "fun2"
+ .byte 0x1 @ DW_AT_decl_file (record_goto.c)
+ .byte 0x1a @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte .LFB1 @ DW_AT_low_pc
+ .4byte .LFE1-.LFB1 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_tail_call_sites
+ .uleb128 0x5 @ (DIE (0x74) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF3 @ DW_AT_name: "fun1"
+ .byte 0x1 @ DW_AT_decl_file (record_goto.c)
+ .byte 0x15 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte .LFB0 @ DW_AT_low_pc
+ .4byte .LFE0-.LFB0 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .byte 0 @ end of children of DIE 0xb
+ .section .debug_abbrev,"",%progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 @ (abbrev code)
+ .uleb128 0x11 @ (TAG: DW_TAG_compile_unit)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x25 @ (DW_AT_producer)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x13 @ (DW_AT_language)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x1b @ (DW_AT_comp_dir)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x10 @ (DW_AT_stmt_list)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3f @ (DW_AT_external)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2116 @ (DW_AT_GNU_all_tail_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 @ (abbrev code)
+ .uleb128 0x24 @ (TAG: DW_TAG_base_type)
+ .byte 0 @ DW_children_no
+ .uleb128 0xb @ (DW_AT_byte_size)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3e @ (DW_AT_encoding)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3f @ (DW_AT_external)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2116 @ (DW_AT_GNU_all_tail_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3f @ (DW_AT_external)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_aranges,"",%progbits
+ .4byte 0x1c @ Length of Address Ranges Info
+ .2byte 0x2 @ DWARF Version
+ .4byte .Ldebug_info0 @ Offset of Compilation Unit Info
+ .byte 0x4 @ Size of Address
+ .byte 0 @ Size of Segment Descriptor
+ .2byte 0 @ Pad to 8 byte boundary
+ .2byte 0
+ .4byte .Ltext0 @ Address
+ .4byte .Letext0-.Ltext0 @ Length
+ .4byte 0
+ .4byte 0
+ .section .debug_line,"",%progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",%progbits,1
+.LASF5:
+ .ascii "record_goto.c\000"
+.LASF2:
+ .ascii "fun2\000"
+.LASF6:
+ .ascii "/home/ubuntu/development/gdb/binutils-gdb/gdb/tests"
+ .ascii "uite/gdb.btrace\000"
+.LASF4:
+ .ascii "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu"
+ .ascii "=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -fstack-pro"
+ .ascii "tector-strong\000"
+.LASF0:
+ .ascii "fun4\000"
+.LASF3:
+ .ascii "fun1\000"
+.LASF7:
+ .ascii "main\000"
+.LASF1:
+ .ascii "fun3\000"
+ .ident "GCC: (Ubuntu/Linaro 7.4.0-1ubuntu1~18.04.1) 7.4.0"
+ .section .note.GNU-stack,"",%progbits
diff --git a/gdb/testsuite/gdb.btrace/arm-tailcall-only.S b/gdb/testsuite/gdb.btrace/arm-tailcall-only.S
new file mode 100644
index 00000000000..b7f4e4a3fce
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/arm-tailcall-only.S
@@ -0,0 +1,504 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2016-2020 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv7 machine using:
+ gcc -S -O2 -dA -g tailcall-only.c -o arm-tailcall-only.S */
+
+ .eabi_attribute 28, 1 @ Tag_ABI_VFP_args
+ .eabi_attribute 20, 1 @ Tag_ABI_FP_denormal
+ .eabi_attribute 21, 1 @ Tag_ABI_FP_exceptions
+ .eabi_attribute 23, 3 @ Tag_ABI_FP_number_model
+ .eabi_attribute 24, 1 @ Tag_ABI_align8_needed
+ .eabi_attribute 25, 1 @ Tag_ABI_align8_preserved
+ .eabi_attribute 26, 2 @ Tag_ABI_enum_size
+ .eabi_attribute 30, 2 @ Tag_ABI_optimization_goals
+ .eabi_attribute 34, 1 @ Tag_CPU_unaligned_access
+ .eabi_attribute 18, 4 @ Tag_ABI_PCS_wchar_t
+ .file "tailcall-only.c"
+ .text
+.Ltext0:
+ .cfi_sections .debug_frame
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type bar_1, %function
+bar_1:
+.LFB0:
+ .file 1 "tailcall-only.c"
+ @ tailcall-only.c:22
+ .loc 1 22 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+ @ tailcall-only.c:24
+ .loc 1 24 0
+ movs r0, #42
+@ SUCC: EXIT [100.0%]
+ bx lr
+ .cfi_endproc
+.LFE0:
+ .size bar_1, .-bar_1
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type bar, %function
+bar:
+.LFB1:
+ @ tailcall-only.c:28
+ .loc 1 28 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+@ SUCC: EXIT [100.0%] (ABNORMAL,SIBCALL)
+ @ tailcall-only.c:29
+ .loc 1 29 0
+ b bar_1(PLT)
+.LVL0:
+ .cfi_endproc
+.LFE1:
+ .size bar, .-bar
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type foo_1, %function
+foo_1:
+.LFB2:
+ @ tailcall-only.c:34
+ .loc 1 34 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+@ SUCC: EXIT [100.0%] (ABNORMAL,SIBCALL)
+ @ tailcall-only.c:35
+ .loc 1 35 0
+ b bar(PLT)
+.LVL1:
+ .cfi_endproc
+.LFE2:
+ .size foo_1, .-foo_1
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type foo, %function
+foo:
+.LFB3:
+ @ tailcall-only.c:40
+ .loc 1 40 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+@ SUCC: EXIT [100.0%] (ABNORMAL,SIBCALL)
+ @ tailcall-only.c:41
+ .loc 1 41 0
+ b foo_1(PLT)
+.LVL2:
+ .cfi_endproc
+.LFE3:
+ .size foo, .-foo
+ .section .text.startup,"ax",%progbits
+ .align 1
+ .p2align 2,,3
+ .global main
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type main, %function
+main:
+.LFB4:
+ @ tailcall-only.c:46
+ .loc 1 46 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+ push {r3, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 3, -8
+ .cfi_offset 14, -4
+ @ tailcall-only.c:49
+ .loc 1 49 0
+ bl foo(PLT)
+.LVL3:
+ @ tailcall-only.c:53
+ .loc 1 53 0
+ adds r0, r0, #1
+.LVL4:
+@ SUCC: EXIT [100.0%]
+ pop {r3, pc}
+ .cfi_endproc
+.LFE4:
+ .size main, .-main
+ .text
+.Letext0:
+ .section .debug_info,"",%progbits
+.Ldebug_info0:
+ .4byte 0xd9 @ Length of Compilation Unit Info
+ .2byte 0x4 @ DWARF version number
+ .4byte .Ldebug_abbrev0 @ Offset Into Abbrev. Section
+ .byte 0x4 @ Pointer Size (in bytes)
+ .uleb128 0x1 @ (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF1 @ DW_AT_producer: "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -O2 -fstack-protector-strong"
+ .byte 0xc @ DW_AT_language
+ .4byte .LASF2 @ DW_AT_name: "tailcall-only.c"
+ .4byte .LASF3 @ DW_AT_comp_dir: "/home/ubuntu/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .4byte .Ldebug_ranges0+0 @ DW_AT_ranges
+ .4byte 0 @ DW_AT_low_pc
+ .4byte .Ldebug_line0 @ DW_AT_stmt_list
+ .uleb128 0x2 @ (DIE (0x25) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF4 @ DW_AT_name: "main"
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x2d @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB4 @ DW_AT_low_pc
+ .4byte .LFE4-.LFB4 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0x57 @ DW_AT_sibling
+ .uleb128 0x3 @ (DIE (0x3e) DW_TAG_variable)
+ .4byte .LASF5 @ DW_AT_name: "answer"
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x2f @ DW_AT_decl_line
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LLST0 @ DW_AT_location
+ .uleb128 0x4 @ (DIE (0x4d) DW_TAG_GNU_call_site)
+ .4byte .LVL3 @ DW_AT_low_pc
+ .4byte 0x5e @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0x25
+ .uleb128 0x5 @ (DIE (0x57) DW_TAG_base_type)
+ .byte 0x4 @ DW_AT_byte_size
+ .byte 0x5 @ DW_AT_encoding
+ .ascii "int\0" @ DW_AT_name
+ .uleb128 0x6 @ (DIE (0x5e) DW_TAG_subprogram)
+ .ascii "foo\0" @ DW_AT_name
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x27 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB3 @ DW_AT_low_pc
+ .4byte .LFE3-.LFB3 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0x81 @ DW_AT_sibling
+ .uleb128 0x7 @ (DIE (0x77) DW_TAG_GNU_call_site)
+ .4byte .LVL2 @ DW_AT_low_pc
+ @ DW_AT_GNU_tail_call
+ .4byte 0x81 @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0x5e
+ .uleb128 0x8 @ (DIE (0x81) DW_TAG_subprogram)
+ .4byte .LASF0 @ DW_AT_name: "foo_1"
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x21 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB2 @ DW_AT_low_pc
+ .4byte .LFE2-.LFB2 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0xa4 @ DW_AT_sibling
+ .uleb128 0x7 @ (DIE (0x9a) DW_TAG_GNU_call_site)
+ .4byte .LVL1 @ DW_AT_low_pc
+ @ DW_AT_GNU_tail_call
+ .4byte 0xa4 @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0x81
+ .uleb128 0x6 @ (DIE (0xa4) DW_TAG_subprogram)
+ .ascii "bar\0" @ DW_AT_name
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x1b @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB1 @ DW_AT_low_pc
+ .4byte .LFE1-.LFB1 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0xc7 @ DW_AT_sibling
+ .uleb128 0x7 @ (DIE (0xbd) DW_TAG_GNU_call_site)
+ .4byte .LVL0 @ DW_AT_low_pc
+ @ DW_AT_GNU_tail_call
+ .4byte 0xc7 @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0xa4
+ .uleb128 0x9 @ (DIE (0xc7) DW_TAG_subprogram)
+ .4byte .LASF6 @ DW_AT_name: "bar_1"
+ .byte 0x1 @ DW_AT_decl_file (tailcall-only.c)
+ .byte 0x15 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB0 @ DW_AT_low_pc
+ .4byte .LFE0-.LFB0 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .byte 0 @ end of children of DIE 0xb
+ .section .debug_abbrev,"",%progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 @ (abbrev code)
+ .uleb128 0x11 @ (TAG: DW_TAG_compile_unit)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x25 @ (DW_AT_producer)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x13 @ (DW_AT_language)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x1b @ (DW_AT_comp_dir)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x55 @ (DW_AT_ranges)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x10 @ (DW_AT_stmt_list)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x3f @ (DW_AT_external)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x1 @ (DW_AT_sibling)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 @ (abbrev code)
+ .uleb128 0x34 @ (TAG: DW_TAG_variable)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x2 @ (DW_AT_location)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 @ (abbrev code)
+ .uleb128 0x4109 @ (TAG: DW_TAG_GNU_call_site)
+ .byte 0 @ DW_children_no
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x31 @ (DW_AT_abstract_origin)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 @ (abbrev code)
+ .uleb128 0x24 @ (TAG: DW_TAG_base_type)
+ .byte 0 @ DW_children_no
+ .uleb128 0xb @ (DW_AT_byte_size)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3e @ (DW_AT_encoding)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x6 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x1 @ (DW_AT_sibling)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x7 @ (abbrev code)
+ .uleb128 0x4109 @ (TAG: DW_TAG_GNU_call_site)
+ .byte 0 @ DW_children_no
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x2115 @ (DW_AT_GNU_tail_call)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x31 @ (DW_AT_abstract_origin)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x8 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x1 @ (DW_AT_sibling)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x9 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_loc,"",%progbits
+.Ldebug_loc0:
+.LLST0:
+ .4byte .LVL3 @ Location list begin address (*.LLST0)
+ .4byte .LVL4 @ Location list end address (*.LLST0)
+ .2byte 0x3 @ Location expression size
+ .byte 0x70 @ DW_OP_breg0
+ .sleb128 1
+ .byte 0x9f @ DW_OP_stack_value
+ .4byte .LVL4 @ Location list begin address (*.LLST0)
+ .4byte .LFE4 @ Location list end address (*.LLST0)
+ .2byte 0x1 @ Location expression size
+ .byte 0x50 @ DW_OP_reg0
+ .4byte 0 @ Location list terminator begin (*.LLST0)
+ .4byte 0 @ Location list terminator end (*.LLST0)
+ .section .debug_aranges,"",%progbits
+ .4byte 0x24 @ Length of Address Ranges Info
+ .2byte 0x2 @ DWARF Version
+ .4byte .Ldebug_info0 @ Offset of Compilation Unit Info
+ .byte 0x4 @ Size of Address
+ .byte 0 @ Size of Segment Descriptor
+ .2byte 0 @ Pad to 8 byte boundary
+ .2byte 0
+ .4byte .Ltext0 @ Address
+ .4byte .Letext0-.Ltext0 @ Length
+ .4byte .LFB4 @ Address
+ .4byte .LFE4-.LFB4 @ Length
+ .4byte 0
+ .4byte 0
+ .section .debug_ranges,"",%progbits
+.Ldebug_ranges0:
+ .4byte .Ltext0 @ Offset 0
+ .4byte .Letext0
+ .4byte .LFB4 @ Offset 0x8
+ .4byte .LFE4
+ .4byte 0
+ .4byte 0
+ .section .debug_line,"",%progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",%progbits,1
+.LASF2:
+ .ascii "tailcall-only.c\000"
+.LASF5:
+ .ascii "answer\000"
+.LASF1:
+ .ascii "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu"
+ .ascii "=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -O2 -fstack"
+ .ascii "-protector-strong\000"
+.LASF4:
+ .ascii "main\000"
+.LASF6:
+ .ascii "bar_1\000"
+.LASF3:
+ .ascii "/home/ubuntu/development/gdb/binutils-gdb/gdb/tests"
+ .ascii "uite/gdb.btrace\000"
+.LASF0:
+ .ascii "foo_1\000"
+ .ident "GCC: (Ubuntu/Linaro 7.4.0-1ubuntu1~18.04.1) 7.4.0"
+ .section .note.GNU-stack,"",%progbits
diff --git a/gdb/testsuite/gdb.btrace/arm-tailcall.S b/gdb/testsuite/gdb.btrace/arm-tailcall.S
new file mode 100644
index 00000000000..125b614524a
--- /dev/null
+++ b/gdb/testsuite/gdb.btrace/arm-tailcall.S
@@ -0,0 +1,391 @@
+ /* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013-2020 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated on an armv7 machine using:
+ gcc -S -O2 -dA -g tailcall.c -o arm-tailcall.S */
+
+ .eabi_attribute 28, 1 @ Tag_ABI_VFP_args
+ .eabi_attribute 20, 1 @ Tag_ABI_FP_denormal
+ .eabi_attribute 21, 1 @ Tag_ABI_FP_exceptions
+ .eabi_attribute 23, 3 @ Tag_ABI_FP_number_model
+ .eabi_attribute 24, 1 @ Tag_ABI_align8_needed
+ .eabi_attribute 25, 1 @ Tag_ABI_align8_preserved
+ .eabi_attribute 26, 2 @ Tag_ABI_enum_size
+ .eabi_attribute 30, 2 @ Tag_ABI_optimization_goals
+ .eabi_attribute 34, 1 @ Tag_CPU_unaligned_access
+ .eabi_attribute 18, 4 @ Tag_ABI_PCS_wchar_t
+ .file "tailcall.c"
+ .text
+.Ltext0:
+ .cfi_sections .debug_frame
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type bar, %function
+bar:
+.LFB0:
+ .file 1 "tailcall.c"
+ @ tailcall.c:22
+ .loc 1 22 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+ @ tailcall.c:24
+ .loc 1 24 0
+ movs r0, #42
+@ SUCC: EXIT [100.0%]
+ bx lr
+ .cfi_endproc
+.LFE0:
+ .size bar, .-bar
+ .align 1
+ .p2align 2,,3
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type foo, %function
+foo:
+.LFB1:
+ @ tailcall.c:28
+ .loc 1 28 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+ @ link register save eliminated.
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+@ SUCC: EXIT [100.0%] (ABNORMAL,SIBCALL)
+ @ tailcall.c:29
+ .loc 1 29 0
+ b bar(PLT)
+.LVL0:
+ .cfi_endproc
+.LFE1:
+ .size foo, .-foo
+ .section .text.startup,"ax",%progbits
+ .align 1
+ .p2align 2,,3
+ .global main
+ .syntax unified
+ .thumb
+ .thumb_func
+ .fpu vfpv3-d16
+ .type main, %function
+main:
+.LFB2:
+ @ tailcall.c:34
+ .loc 1 34 0
+ .cfi_startproc
+ @ args = 0, pretend = 0, frame = 0
+ @ frame_needed = 0, uses_anonymous_args = 0
+@ BLOCK 2 freq:10000 seq:0
+@ PRED: ENTRY [100.0%] (FALLTHRU)
+ push {r3, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_offset 3, -8
+ .cfi_offset 14, -4
+ @ tailcall.c:37
+ .loc 1 37 0
+ bl foo(PLT)
+.LVL1:
+ @ tailcall.c:41
+ .loc 1 41 0
+ adds r0, r0, #1
+.LVL2:
+@ SUCC: EXIT [100.0%]
+ pop {r3, pc}
+ .cfi_endproc
+.LFE2:
+ .size main, .-main
+ .text
+.Letext0:
+ .section .debug_info,"",%progbits
+.Ldebug_info0:
+ .4byte 0x93 @ Length of Compilation Unit Info
+ .2byte 0x4 @ DWARF version number
+ .4byte .Ldebug_abbrev0 @ Offset Into Abbrev. Section
+ .byte 0x4 @ Pointer Size (in bytes)
+ .uleb128 0x1 @ (DIE (0xb) DW_TAG_compile_unit)
+ .4byte .LASF0 @ DW_AT_producer: "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -O2 -fstack-protector-strong"
+ .byte 0xc @ DW_AT_language
+ .4byte .LASF1 @ DW_AT_name: "tailcall.c"
+ .4byte .LASF2 @ DW_AT_comp_dir: "/home/ubuntu/development/gdb/binutils-gdb/gdb/testsuite/gdb.btrace"
+ .4byte .Ldebug_ranges0+0 @ DW_AT_ranges
+ .4byte 0 @ DW_AT_low_pc
+ .4byte .Ldebug_line0 @ DW_AT_stmt_list
+ .uleb128 0x2 @ (DIE (0x25) DW_TAG_subprogram)
+ @ DW_AT_external
+ .4byte .LASF3 @ DW_AT_name: "main"
+ .byte 0x1 @ DW_AT_decl_file (tailcall.c)
+ .byte 0x21 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB2 @ DW_AT_low_pc
+ .4byte .LFE2-.LFB2 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0x57 @ DW_AT_sibling
+ .uleb128 0x3 @ (DIE (0x3e) DW_TAG_variable)
+ .4byte .LASF4 @ DW_AT_name: "answer"
+ .byte 0x1 @ DW_AT_decl_file (tailcall.c)
+ .byte 0x23 @ DW_AT_decl_line
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LLST0 @ DW_AT_location
+ .uleb128 0x4 @ (DIE (0x4d) DW_TAG_GNU_call_site)
+ .4byte .LVL1 @ DW_AT_low_pc
+ .4byte 0x5e @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0x25
+ .uleb128 0x5 @ (DIE (0x57) DW_TAG_base_type)
+ .byte 0x4 @ DW_AT_byte_size
+ .byte 0x5 @ DW_AT_encoding
+ .ascii "int\0" @ DW_AT_name
+ .uleb128 0x6 @ (DIE (0x5e) DW_TAG_subprogram)
+ .ascii "foo\0" @ DW_AT_name
+ .byte 0x1 @ DW_AT_decl_file (tailcall.c)
+ .byte 0x1b @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB1 @ DW_AT_low_pc
+ .4byte .LFE1-.LFB1 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .4byte 0x81 @ DW_AT_sibling
+ .uleb128 0x7 @ (DIE (0x77) DW_TAG_GNU_call_site)
+ .4byte .LVL0 @ DW_AT_low_pc
+ @ DW_AT_GNU_tail_call
+ .4byte 0x81 @ DW_AT_abstract_origin
+ .byte 0 @ end of children of DIE 0x5e
+ .uleb128 0x8 @ (DIE (0x81) DW_TAG_subprogram)
+ .ascii "bar\0" @ DW_AT_name
+ .byte 0x1 @ DW_AT_decl_file (tailcall.c)
+ .byte 0x15 @ DW_AT_decl_line
+ @ DW_AT_prototyped
+ .4byte 0x57 @ DW_AT_type
+ .4byte .LFB0 @ DW_AT_low_pc
+ .4byte .LFE0-.LFB0 @ DW_AT_high_pc
+ .uleb128 0x1 @ DW_AT_frame_base
+ .byte 0x9c @ DW_OP_call_frame_cfa
+ @ DW_AT_GNU_all_call_sites
+ .byte 0 @ end of children of DIE 0xb
+ .section .debug_abbrev,"",%progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 @ (abbrev code)
+ .uleb128 0x11 @ (TAG: DW_TAG_compile_unit)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x25 @ (DW_AT_producer)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x13 @ (DW_AT_language)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x1b @ (DW_AT_comp_dir)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x55 @ (DW_AT_ranges)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x10 @ (DW_AT_stmt_list)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x3f @ (DW_AT_external)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x1 @ (DW_AT_sibling)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 @ (abbrev code)
+ .uleb128 0x34 @ (TAG: DW_TAG_variable)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0xe @ (DW_FORM_strp)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x2 @ (DW_AT_location)
+ .uleb128 0x17 @ (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 @ (abbrev code)
+ .uleb128 0x4109 @ (TAG: DW_TAG_GNU_call_site)
+ .byte 0 @ DW_children_no
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x31 @ (DW_AT_abstract_origin)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 @ (abbrev code)
+ .uleb128 0x24 @ (TAG: DW_TAG_base_type)
+ .byte 0 @ DW_children_no
+ .uleb128 0xb @ (DW_AT_byte_size)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3e @ (DW_AT_encoding)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x6 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0x1 @ DW_children_yes
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x1 @ (DW_AT_sibling)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x7 @ (abbrev code)
+ .uleb128 0x4109 @ (TAG: DW_TAG_GNU_call_site)
+ .byte 0 @ DW_children_no
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x2115 @ (DW_AT_GNU_tail_call)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x31 @ (DW_AT_abstract_origin)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x8 @ (abbrev code)
+ .uleb128 0x2e @ (TAG: DW_TAG_subprogram)
+ .byte 0 @ DW_children_no
+ .uleb128 0x3 @ (DW_AT_name)
+ .uleb128 0x8 @ (DW_FORM_string)
+ .uleb128 0x3a @ (DW_AT_decl_file)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x3b @ (DW_AT_decl_line)
+ .uleb128 0xb @ (DW_FORM_data1)
+ .uleb128 0x27 @ (DW_AT_prototyped)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .uleb128 0x49 @ (DW_AT_type)
+ .uleb128 0x13 @ (DW_FORM_ref4)
+ .uleb128 0x11 @ (DW_AT_low_pc)
+ .uleb128 0x1 @ (DW_FORM_addr)
+ .uleb128 0x12 @ (DW_AT_high_pc)
+ .uleb128 0x6 @ (DW_FORM_data4)
+ .uleb128 0x40 @ (DW_AT_frame_base)
+ .uleb128 0x18 @ (DW_FORM_exprloc)
+ .uleb128 0x2117 @ (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 @ (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_loc,"",%progbits
+.Ldebug_loc0:
+.LLST0:
+ .4byte .LVL1 @ Location list begin address (*.LLST0)
+ .4byte .LVL2 @ Location list end address (*.LLST0)
+ .2byte 0x3 @ Location expression size
+ .byte 0x70 @ DW_OP_breg0
+ .sleb128 1
+ .byte 0x9f @ DW_OP_stack_value
+ .4byte .LVL2 @ Location list begin address (*.LLST0)
+ .4byte .LFE2 @ Location list end address (*.LLST0)
+ .2byte 0x1 @ Location expression size
+ .byte 0x50 @ DW_OP_reg0
+ .4byte 0 @ Location list terminator begin (*.LLST0)
+ .4byte 0 @ Location list terminator end (*.LLST0)
+ .section .debug_aranges,"",%progbits
+ .4byte 0x24 @ Length of Address Ranges Info
+ .2byte 0x2 @ DWARF Version
+ .4byte .Ldebug_info0 @ Offset of Compilation Unit Info
+ .byte 0x4 @ Size of Address
+ .byte 0 @ Size of Segment Descriptor
+ .2byte 0 @ Pad to 8 byte boundary
+ .2byte 0
+ .4byte .Ltext0 @ Address
+ .4byte .Letext0-.Ltext0 @ Length
+ .4byte .LFB2 @ Address
+ .4byte .LFE2-.LFB2 @ Length
+ .4byte 0
+ .4byte 0
+ .section .debug_ranges,"",%progbits
+.Ldebug_ranges0:
+ .4byte .Ltext0 @ Offset 0
+ .4byte .Letext0
+ .4byte .LFB2 @ Offset 0x8
+ .4byte .LFE2
+ .4byte 0
+ .4byte 0
+ .section .debug_line,"",%progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",%progbits,1
+.LASF0:
+ .ascii "GNU C11 7.4.0 -march=armv7-a -mfloat-abi=hard -mfpu"
+ .ascii "=vfpv3-d16 -mthumb -mtls-dialect=gnu -g -O2 -fstack"
+ .ascii "-protector-strong\000"
+.LASF4:
+ .ascii "answer\000"
+.LASF1:
+ .ascii "tailcall.c\000"
+.LASF2:
+ .ascii "/home/ubuntu/development/gdb/binutils-gdb/gdb/tests"
+ .ascii "uite/gdb.btrace\000"
+.LASF3:
+ .ascii "main\000"
+ .ident "GCC: (Ubuntu/Linaro 7.4.0-1ubuntu1~18.04.1) 7.4.0"
+ .section .note.GNU-stack,"",%progbits
diff --git a/gdb/testsuite/gdb.btrace/buffer-size.exp b/gdb/testsuite/gdb.btrace/buffer-size.exp
index ea4e36c1593..77d7b77852a 100644
--- a/gdb/testsuite/gdb.btrace/buffer-size.exp
+++ b/gdb/testsuite/gdb.btrace/buffer-size.exp
@@ -32,10 +32,17 @@ if ![runto_main] {
return -1
}
-gdb_test_no_output "set record btrace bts buffer-size 1"
-gdb_test_no_output "set record btrace pt buffer-size 1"
-gdb_test "show record btrace bts buffer-size" "The record/replay bts buffer size is 1\.\r"
-gdb_test "show record btrace pt buffer-size" "The record/replay pt buffer size is 1\.\r"
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ gdb_test_no_output "set record btrace bts buffer-size 1"
+ gdb_test_no_output "set record btrace pt buffer-size 1"
+ gdb_test "show record btrace bts buffer-size" "The record/replay bts buffer size is 1\.\r"
+ gdb_test "show record btrace pt buffer-size" "The record/replay pt buffer size is 1\.\r"
+}
+
+if {[istarget "arm*-*-*"]|| [istarget "aarch64*-*-*"]} {
+ gdb_test_no_output "set record btrace etm buffer-size 1"
+ gdb_test "show record btrace etm buffer-size" "The record/replay etm buffer size is 1\.\r"
+}
gdb_test_no_output "record btrace"
gdb_test "info record" [multi_line \
diff --git a/gdb/testsuite/gdb.btrace/delta.exp b/gdb/testsuite/gdb.btrace/delta.exp
index 9f6d741c013..2c8bada2065 100644
--- a/gdb/testsuite/gdb.btrace/delta.exp
+++ b/gdb/testsuite/gdb.btrace/delta.exp
@@ -58,8 +58,18 @@ proc check_trace {} {
"Recording format: .*" \
"Recorded 1 instructions in 1 functions \\\(0 gaps\\\) for .*" \
]
+ if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
gdb_test "record instruction-history /f 1" \
"1\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tmov *\\\$0x0,%eax\r"
+ }
+ if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history /f 1" \
+ "1\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tmovs\tr3, #0\r"
+ }
+ if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history /f 1" \
+ "1\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tmov\tw0, #0x0.*\r"
+ }
gdb_test "record function-call-history /c 1" "1\tmain"
}
diff --git a/gdb/testsuite/gdb.btrace/instruction_history.exp b/gdb/testsuite/gdb.btrace/instruction_history.exp
index 403085c083f..76fcadb9ac2 100644
--- a/gdb/testsuite/gdb.btrace/instruction_history.exp
+++ b/gdb/testsuite/gdb.btrace/instruction_history.exp
@@ -21,8 +21,14 @@ if { [skip_btrace_tests] } {
unsupported "target does not support record-btrace"
return -1
}
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ standard_testfile instruction_history.c x86-instruction_history.S
+} elseif { [istarget "arm*-*-*"] } {
+ standard_testfile instruction_history.c arm-instruction_history.S
+} elseif { [istarget "aarch64*-*-*"]} {
+ standard_testfile instruction_history.c aarch64-instruction_history.S
+}
-standard_testfile .c .S
if [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" {debug}] {
return -1
}
@@ -68,39 +74,128 @@ if { $traced != 11 } {
}
# test that we see the expected instructions
-gdb_test "record instruction-history 3,7" [multi_line \
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ gdb_test "record instruction-history 3,7" [multi_line \
"3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"4\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \
"5\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"6\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
"7\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
]
+}
+if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history 3,7" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>" \
+ "4\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tsubs\tr0, r0, #1" \
+ "5\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>" \
+ "6\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tcmp\tr0, #0" \
+ "7\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>\r" \
+ ]
+}
+if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history 3,7" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*" \
+ "4\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tsubs\tx0, x0, #0x1.*" \
+ "5\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>.*" \
+ "6\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tcmp\tx0, #0x0.*" \
+ "7\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*\r" \
+ ]
+}
-gdb_test "record instruction-history /f 3,+5" [multi_line \
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ gdb_test "record instruction-history /f 3,+5" [multi_line \
"3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \
"5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
"7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
]
+}
+if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history /f 3,+5" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>" \
+ "4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tsubs\tr0, r0, #1" \
+ "5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>" \
+ "6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp\tr0, #0" \
+ "7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>\r" \
+ ]
+}
+if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history /f 3,+5" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*" \
+ "4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tsubs\tx0, x0, #0x1.*" \
+ "5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>.*" \
+ "6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp\tx0, #0x0.*" \
+ "7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*\r" \
+ ]
+}
-gdb_test "record instruction-history /p 7,-5" [multi_line \
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ gdb_test "record instruction-history /p 7,-5" [multi_line \
"3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"4\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \
"5\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"6\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
"7\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
]
+}
+if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history /p 7,-5" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>" \
+ "4\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tsubs\tr0, r0, #1" \
+ "5\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>" \
+ "6\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tcmp\tr0, #0" \
+ "7\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>\r" \
+ ]
+}
+if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history /p 7,-5" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*" \
+ "4\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tsubs\tx0, x0, #0x1.*" \
+ "5\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>.*" \
+ "6\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tcmp\tx0, #0x0.*" \
+ "7\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2>.*\r" \
+ ]
+}
-gdb_test "record instruction-history /pf 3,7" [multi_line \
+
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ gdb_test "record instruction-history /pf 3,7" [multi_line \
"3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \
"5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
"6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
"7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
]
+}
+if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history /pf 3,7" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>" \
+ "4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tsubs\tr0, r0, #1" \
+ "5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>" \
+ "6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp\tr0, #0" \
+ "7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>\r" \
+ ]
+}
+if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history /pf 3,7" [multi_line \
+ "3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\\.eq\t0x\[0-9a-f\]+ <L2>.*" \
+ "4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tsubs\tx0, x0, #0x1.*" \
+ "5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\t0x\[0-9a-f\]+ <L1>.*" \
+ "6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp\tx0, #0x0.*" \
+ "7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tb\\.eq\t0x\[0-9a-f\]+ <L2>.*\r" \
+ ]
+}
-gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r"
+if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
+ gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r"
+}
+if { [istarget "arm*-*-*"] } {
+ gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tbeq\t0x\[0-9a-f\]+ <L2>\r"
+}
+if { [istarget "aarch64*-*-*"]} {
+ gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <L1\\+\[0-9\]+>:\tb\.eq\t0x\[0-9a-f\]+ <L2> // b\.none\r"
+}
# the following tests are checking the iterators
# to avoid lots of regexps, we just check the number of lines that
diff --git a/gdb/testsuite/gdb.btrace/non-stop.exp b/gdb/testsuite/gdb.btrace/non-stop.exp
index 40cced7a8bb..58459de5359 100644
--- a/gdb/testsuite/gdb.btrace/non-stop.exp
+++ b/gdb/testsuite/gdb.btrace/non-stop.exp
@@ -31,6 +31,12 @@ save_vars { GDBFLAGS } {
clean_restart $testfile
}
+if {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ set loop_position 2
+} elseif {[istarget "arm*-*-*"] || [istarget "aarch64*-*-*"]} {
+ set loop_position 3
+}
+
if ![runto_main] {
untested "failed to run to main"
return -1
@@ -111,87 +117,99 @@ gdb_test "thread apply all info rec" ".*"
gdb_test "info threads" ".*"
with_test_prefix "navigate" {
- gdb_test "thread apply 1 record goto 2" "$loop_line"
- gdb_test "thread apply 2 record goto 4" "$loop_line"
+ gdb_test "thread apply 1 record goto $loop_position" "$loop_line"
+ gdb_test "thread apply 2 record goto [expr {$loop_position + 2}]" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 2\." "thread 1 at insn 2"
+ ".*Replay in progress\. At instruction $loop_position\." "thread 1 at insn $loop_position"
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 4\." "thread 2 at insn 4"
+ ".*Replay in progress\. At instruction [expr {$loop_position + 2}]\." "thread 2 at insn [expr {$loop_position + 2}]"
- gdb_test "thread apply all record goto 5" "$loop_line"
+ gdb_test "thread apply all record goto [expr {$loop_position + 3}]" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 5\." "thread 1 at insn 5"
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\." "thread 1 at insn [expr {$loop_position + 3}]"
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 5\." "thread 2 at insn 5"
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\." "thread 2 at insn [expr {$loop_position + 3}]"
}
with_test_prefix "step" {
+ with_test_prefix "fixture" {
+ gdb_test "thread apply 1 record goto [expr {$loop_position + 3}]" ".*"
+ gdb_test "thread apply 2 record goto [expr {$loop_position + 3}]" ".*"
+ }
with_test_prefix "thread 1" {
gdb_test "thread apply 1 stepi 2" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 7\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 5}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 5\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\."
}
with_test_prefix "thread 2" {
gdb_test "thread apply 2 stepi 3" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 7\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 5}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 8\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 6}]\."
}
with_test_prefix "all" {
gdb_cont_to all "stepi 4" "$loop_line" 2
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 11\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 9}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 12\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 10}]\."
}
}
with_test_prefix "reverse-step" {
+ with_test_prefix "fixture" {
+ gdb_test "thread apply 1 record goto [expr {$loop_position + 9}]" ".*"
+ gdb_test "thread apply 2 record goto [expr {$loop_position + 10}]" ".*"
+ }
with_test_prefix "thread 1" {
gdb_test "thread apply 1 reverse-stepi 2" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 9\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 7}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 12\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 10}]\."
}
with_test_prefix "thread 2" {
gdb_test "thread apply 2 reverse-stepi 3" "$loop_line"
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 9\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 7}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 9\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 7}]\."
}
with_test_prefix "all" {
gdb_cont_to all "reverse-stepi 4" "$loop_line" 2
gdb_test "thread apply 1 info record" \
- ".*Replay in progress\. At instruction 5\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 5\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\."
}
}
with_test_prefix "continue" {
+ with_test_prefix "fixture" {
+ gdb_test "thread apply 1 record goto [expr {$loop_position + 3}]" ".*"
+ gdb_test "thread apply 2 record goto [expr {$loop_position + 3}]" ".*"
+ }
with_test_prefix "thread 1" {
with_test_prefix "continue" {
gdb_cont_to_no_history 1 "continue" 1
gdb_test "thread apply 1 info record" \
".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 5\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\."
}
with_test_prefix "reverse-continue" {
gdb_cont_to_no_history 1 "reverse-continue" 1
gdb_test "thread apply 1 info record" \
".*Replay in progress\. At instruction 1\."
gdb_test "thread apply 2 info record" \
- ".*Replay in progress\. At instruction 5\."
+ ".*Replay in progress\. At instruction [expr {$loop_position + 3}]\."
}
}
diff --git a/gdb/testsuite/gdb.btrace/record_goto.exp b/gdb/testsuite/gdb.btrace/record_goto.exp
index 75d76da1c7f..a04983a4859 100644
--- a/gdb/testsuite/gdb.btrace/record_goto.exp
+++ b/gdb/testsuite/gdb.btrace/record_goto.exp
@@ -41,6 +41,10 @@ if [info exists COMPILE] {
} else {
standard_testfile i686-record_goto.S
}
+} elseif {[istarget "arm*-*-*"]} {
+ standard_testfile arm-record_goto.S
+} elseif {[istarget "aarch64*-*-*"]} {
+ standard_testfile aarch64-record_goto.S
} else {
unsupported "target architecture not supported"
return -1
@@ -50,6 +54,126 @@ if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
return -1
}
+if {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ set function_positions(0) 19
+ set function_positions(1) 27
+ set function_positions(2) 2
+ set function_positions(end) 40
+ set function_positions(3) 39
+
+ set sequence_begin(1) 1
+ set sequence_end(1) 1
+ set sequence_begin(2) 2
+ set sequence_end(2) 4
+ set sequence_begin(3) 5
+ set sequence_end(3) 8
+ set sequence_begin(4) 9
+ set sequence_end(4) 9
+ set sequence_begin(5) 10
+ set sequence_end(5) 12
+ set sequence_begin(6) 13
+ set sequence_end(6) 16
+ set sequence_begin(7) 17
+ set sequence_end(7) 18
+ set sequence_begin(8) 19
+ set sequence_end(8) 19
+ set sequence_begin(9) 20
+ set sequence_end(9) 22
+ set sequence_begin(10) 23
+ set sequence_end(10) 26
+ set sequence_begin(11) 27
+ set sequence_end(11) 27
+ set sequence_begin(12) 28
+ set sequence_end(12) 30
+ set sequence_begin(13) 31
+ set sequence_end(13) 34
+ set sequence_begin(14) 35
+ set sequence_end(14) 36
+ set sequence_begin(15) 37
+ set sequence_end(15) 38
+ set sequence_begin(16) 39
+ set sequence_end(16) 40
+
+} elseif {[istarget "arm*-*-*"]} {
+ set function_positions(0) 23
+ set function_positions(1) 33
+ set function_positions(2) 2
+ set function_positions(end) 48
+ set function_positions(3) 47
+
+ set sequence_begin(1) 1
+ set sequence_end(1) 1
+ set sequence_begin(2) 2
+ set sequence_end(2) 4
+ set sequence_begin(3) 5
+ set sequence_end(3) 10
+ set sequence_begin(4) 11
+ set sequence_end(4) 11
+ set sequence_begin(5) 12
+ set sequence_end(5) 14
+ set sequence_begin(6) 15
+ set sequence_end(6) 20
+ set sequence_begin(7) 21
+ set sequence_end(7) 22
+ set sequence_begin(8) 23
+ set sequence_end(8) 23
+ set sequence_begin(9) 24
+ set sequence_end(9) 26
+ set sequence_begin(10) 27
+ set sequence_end(10) 32
+ set sequence_begin(11) 33
+ set sequence_end(11) 33
+ set sequence_begin(12) 34
+ set sequence_end(12) 36
+ set sequence_begin(13) 37
+ set sequence_end(13) 42
+ set sequence_begin(14) 43
+ set sequence_end(14) 44
+ set sequence_begin(15) 45
+ set sequence_end(15) 46
+ set sequence_begin(16) 47
+ set sequence_end(16) 48
+} elseif {[istarget "aarch64*-*-*"]} {
+ set function_positions(0) 16
+ set function_positions(1) 22
+ set function_positions(2) 2
+ set function_positions(end) 36
+ set function_positions(3) 35
+
+ set sequence_begin(1) 1
+ set sequence_end(1) 1
+ set sequence_begin(2) 2
+ set sequence_end(2) 4
+ set sequence_begin(3) 5
+ set sequence_end(3) 6
+ set sequence_begin(4) 7
+ set sequence_end(4) 7
+ set sequence_begin(5) 8
+ set sequence_end(5) 10
+ set sequence_begin(6) 11
+ set sequence_end(6) 12
+ set sequence_begin(7) 13
+ set sequence_end(7) 15
+ set sequence_begin(8) 16
+ set sequence_end(8) 16
+ set sequence_begin(9) 17
+ set sequence_end(9) 19
+ set sequence_begin(10) 20
+ set sequence_end(10) 21
+ set sequence_begin(11) 22
+ set sequence_end(11) 22
+ set sequence_begin(12) 23
+ set sequence_end(12) 25
+ set sequence_begin(13) 26
+ set sequence_end(13) 27
+ set sequence_begin(14) 28
+ set sequence_end(14) 30
+ set sequence_begin(15) 31
+ set sequence_end(15) 33
+ set sequence_begin(16) 34
+ set sequence_end(16) 36
+}
+
if ![runto_main] {
untested "failed to run to main"
return -1
@@ -65,43 +189,43 @@ gdb_test "next"
# start by listing all functions
gdb_test "record function-call-history /ci 1, +20" [multi_line \
- "1\tmain\tinst 1,1" \
- "2\t fun4\tinst 2,4" \
- "3\t fun1\tinst 5,8" \
- "4\t fun4\tinst 9,9" \
- "5\t fun2\tinst 10,12" \
- "6\t fun1\tinst 13,16" \
- "7\t fun2\tinst 17,18" \
- "8\t fun4\tinst 19,19" \
- "9\t fun3\tinst 20,22" \
- "10\t fun1\tinst 23,26" \
- "11\t fun3\tinst 27,27" \
- "12\t fun2\tinst 28,30" \
- "13\t fun1\tinst 31,34" \
- "14\t fun2\tinst 35,36" \
- "15\t fun3\tinst 37,38" \
- "16\t fun4\tinst 39,40" \
+ "1\tmain\tinst $sequence_begin(1),$sequence_end(1)" \
+ "2\t fun4\tinst $sequence_begin(2),$sequence_end(2)" \
+ "3\t fun1\tinst $sequence_begin(3),$sequence_end(3)" \
+ "4\t fun4\tinst $sequence_begin(4),$sequence_end(4)" \
+ "5\t fun2\tinst $sequence_begin(5),$sequence_end(5)" \
+ "6\t fun1\tinst $sequence_begin(6),$sequence_end(6)" \
+ "7\t fun2\tinst $sequence_begin(7),$sequence_end(7)" \
+ "8\t fun4\tinst $sequence_begin(8),$sequence_end(8)" \
+ "9\t fun3\tinst $sequence_begin(9),$sequence_end(9)" \
+ "10\t fun1\tinst $sequence_begin(10),$sequence_end(10)" \
+ "11\t fun3\tinst $sequence_begin(11),$sequence_end(11)" \
+ "12\t fun2\tinst $sequence_begin(12),$sequence_end(12)" \
+ "13\t fun1\tinst $sequence_begin(13),$sequence_end(13)" \
+ "14\t fun2\tinst $sequence_begin(14),$sequence_end(14)" \
+ "15\t fun3\tinst $sequence_begin(15),$sequence_end(15)" \
+ "16\t fun4\tinst $sequence_begin(16),$sequence_end(16)" \
]
# let's see if we can go back in history
-gdb_test "record goto 19" ".*fun4 \\(\\) at record_goto.c:43.*"
+gdb_test "record goto $function_positions(0)" ".*fun4 \\(\\) at record_goto.c:43.*"
# the function call history should start at the new location
gdb_test "record function-call-history /ci" [multi_line \
- "8\t fun4\tinst 19,19" \
- "9\t fun3\tinst 20,22" \
- "10\t fun1\tinst 23,26" \
- ] "function-call-history from 19 forwards"
+ "8\t fun4\tinst $sequence_begin(8),$sequence_end(8)" \
+ "9\t fun3\tinst $sequence_begin(9),$sequence_end(9)" \
+ "10\t fun1\tinst $sequence_begin(10),$sequence_end(10)" \
+ ] "function-call-history from $function_positions(0) forwards"
# the instruction history should start at the new location
gdb_test "record instruction-history" [multi_line \
- "19.*" \
- "20.*" \
- "21.*" \
- ] "instruction-history from 19 forwards"
+ "$function_positions(0).*" \
+ "[expr {$function_positions(0) + 1}].*" \
+ "[expr {$function_positions(0) + 2}].*" \
+ ] "instruction-history from $function_positions(0) forwards"
# let's go to another place in the history
-gdb_test "record goto 27" ".*fun3 \\(\\) at record_goto.c:35.*"
+gdb_test "record goto $function_positions(1)" ".*fun3 \\(\\) at record_goto.c:35.*"
# check the back trace at that location
gdb_test "backtrace" [multi_line \
@@ -117,26 +241,26 @@ gdb_test "up" ".*main.*at record_goto.c:49.*" "up to main"
# the function call history should start at the new location
gdb_test "record function-call-history /ci -" [multi_line \
- "9\t fun3\tinst 20,22" \
- "10\t fun1\tinst 23,26" \
- "11\t fun3\tinst 27,27" \
- ] "function-call-history from 27 backwards"
+ "9\t fun3\tinst $sequence_begin(9),$sequence_end(9)" \
+ "10\t fun1\tinst $sequence_begin(10),$sequence_end(10)" \
+ "11\t fun3\tinst $sequence_begin(11),$sequence_end(11)" \
+ ] "function-call-history from $function_positions(1) backwards"
# the instruction history should start at the new location
gdb_test "record instruction-history -" [multi_line \
- "25.*" \
- "26.*" \
- "27.*" \
- ] "instruction-history from 27 backwards"
+ "[expr {$function_positions(1) - 2}].*" \
+ "[expr {$function_positions(1) - 1}].*" \
+ "$function_positions(1).*" \
+ ] "instruction-history from $function_positions(1) backwards"
# test that we can go to the begin of the trace
gdb_test "record goto begin" ".*main \\(\\) at record_goto.c:49.*"
# check that we're filling up the context correctly
gdb_test "record function-call-history /ci -" [multi_line \
- "1\tmain\tinst 1,1" \
- "2\t fun4\tinst 2,4" \
- "3\t fun1\tinst 5,8" \
+ "1\tmain\tinst $sequence_begin(1),$sequence_end(1)" \
+ "2\t fun4\tinst $sequence_begin(2),$sequence_end(2)" \
+ "3\t fun1\tinst $sequence_begin(3),$sequence_end(3)" \
] "function-call-history from begin backwards"
# check that we're filling up the context correctly
@@ -147,52 +271,53 @@ gdb_test "record instruction-history -" [multi_line \
] "instruction-history from begin backwards"
# we should get the exact same history from the first instruction
-gdb_test "record goto 2" ".*fun4 \\(\\) at record_goto.c:40.*"
+gdb_test "record goto $function_positions(2)" ".*fun4 \\(\\) at record_goto.c:40.*"
# check that we're filling up the context correctly
gdb_test "record function-call-history /ci -" [multi_line \
- "1\tmain\tinst 1,1" \
- "2\t fun4\tinst 2,4" \
- "3\t fun1\tinst 5,8\r" \
- ] "function-call-history from 2 backwards"
+ "1\tmain\tinst $sequence_begin(1),$sequence_end(1)" \
+ "2\t fun4\tinst $sequence_begin(2),$sequence_end(2)" \
+ "3\t fun1\tinst $sequence_begin(3),$sequence_end(3)\r" \
+ ] "function-call-history from $function_positions(2) backwards"
# check that we're filling up the context correctly
gdb_test "record instruction-history -" [multi_line \
"1.*" \
"2.*" \
"3.*" \
- ] "instruction-history from 2 backwards"
+ ] "instruction-history from $function_positions(2) backwards"
# check that we can go to the end of the trace
gdb_test "record goto end" ".*main \\(\\) at record_goto.c:50.*"
# check that we're filling up the context correctly
gdb_test "record function-call-history /ci" [multi_line \
- "14\t fun2\tinst 35,36" \
- "15\t fun3\tinst 37,38" \
- "16\t fun4\tinst 39,40" \
+ "14\t fun2\tinst $sequence_begin(14),$sequence_end(14)" \
+ "15\t fun3\tinst $sequence_begin(15),$sequence_end(15)" \
+ "16\t fun4\tinst $sequence_begin(16),$sequence_end(16)" \
] "function-call-history from end forwards"
# check that we're filling up the context correctly
+#adapt it for arm, last instruction is at pos 48
gdb_test "record instruction-history" [multi_line \
- "38.*" \
- "39.*" \
- "40.*\r" \
+ "[expr {$function_positions(end) - 2}].*" \
+ "[expr {$function_positions(end) - 1}].*" \
+ "$function_positions(end).*\r" \
] "instruction-history from end forwards"
# we should get the exact same history from the second to last instruction
-gdb_test "record goto 39" ".*fun4 \\(\\) at record_goto.c:44.*"
+gdb_test "record goto $function_positions(3)" ".*fun4 \\(\\) at record_goto.c:44.*"
# check that we're filling up the context correctly
gdb_test "record function-call-history /ci" [multi_line \
- "14\t fun2\tinst 35,36" \
- "15\t fun3\tinst 37,38" \
- "16\t fun4\tinst 39,40\r" \
- ] "function-call-history from 39 forwards"
+ "14\t fun2\tinst $sequence_begin(14),$sequence_end(14)" \
+ "15\t fun3\tinst $sequence_begin(15),$sequence_end(15)" \
+ "16\t fun4\tinst $sequence_begin(16),$sequence_end(16)\r" \
+ ] "function-call-history from $function_positions(3) forwards"
# check that we're filling up the context correctly
gdb_test "record instruction-history" [multi_line \
- "38.*" \
- "39.*" \
- "40.*\r" \
- ] "instruction-history from 39 forwards"
+ "[expr {$function_positions(3) - 1}].*" \
+ "$function_positions(3).*" \
+ "[expr {$function_positions(3) + 1}].*\r" \
+ ] "instruction-history from $function_positions(3) forwards"
diff --git a/gdb/testsuite/gdb.btrace/stepi.exp b/gdb/testsuite/gdb.btrace/stepi.exp
index bfb680bb30d..5b37d17ba0e 100644
--- a/gdb/testsuite/gdb.btrace/stepi.exp
+++ b/gdb/testsuite/gdb.btrace/stepi.exp
@@ -39,6 +39,10 @@ if [info exists COMPILE] {
} else {
standard_testfile i686-record_goto.S
}
+} elseif {[istarget "arm*-*-*"]} {
+ standard_testfile arm-record_goto.S
+} elseif {[istarget "aarch64*-*-*"]} {
+ standard_testfile aarch64-record_goto.S
} else {
unsupported "target architecture not supported"
return -1
@@ -48,6 +52,56 @@ if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
return -1
}
+if {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ set instructions_count 40
+ set instruction_position(0) 39
+ set instruction_position(1) 40
+ set instruction_position(2) 1
+ set instruction_position(3) 1
+ set instruction_position(4) 22
+ set instruction_position(5) 23
+ set instruction_position(6) 22
+ set instruction_position(7) 27
+ set instruction_position(8) 22
+ set instruction_position(9) 1
+ set instruction_position(10) 1
+ set instruction_position(11) 1
+ set instruction_position(12) 2
+ set instruction_position(13) 1
+} elseif {[istarget "arm*-*-*"]} {
+ set instructions_count 48
+ set instruction_position(0) 47
+ set instruction_position(1) 48
+ set instruction_position(2) 1
+ set instruction_position(3) 1
+ set instruction_position(4) 26
+ set instruction_position(5) 27
+ set instruction_position(6) 26
+ set instruction_position(7) 33
+ set instruction_position(8) 26
+ set instruction_position(9) 1
+ set instruction_position(10) 1
+ set instruction_position(11) 1
+ set instruction_position(12) 2
+ set instruction_position(13) 1
+} elseif {[istarget "aarch64*-*-*"]} {
+ set instructions_count 36
+ set instruction_position(0) 35
+ set instruction_position(1) 36
+ set instruction_position(2) 1
+ set instruction_position(3) 1
+ set instruction_position(4) 19
+ set instruction_position(5) 20
+ set instruction_position(6) 19
+ set instruction_position(7) 22
+ set instruction_position(8) 19
+ set instruction_position(9) 1
+ set instruction_position(10) 1
+ set instruction_position(11) 1
+ set instruction_position(12) 2
+ set instruction_position(13) 1
+}
+
if ![runto_main] {
untested "failed to run to main"
return -1
@@ -56,10 +110,11 @@ if ![runto_main] {
global gdb_prompt
proc check_replay_at { insn } {
+ global instructions_count
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
- "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \
+ "Recorded $instructions_count instructions in 16 functions \\\(0 gaps\\\) for .*" \
"Replay in progress\. At instruction $insn\." \
] "check replay at $insn"
}
@@ -74,15 +129,14 @@ with_test_prefix "record" {
with_test_prefix "fetch" {
gdb_test "reverse-stepi" ".*fun4\.5.*" "reverse-stepi.1"
gdb_test "reverse-stepi" ".*fun4\.5.*" "reverse-stepi.2"
-
# let's check where we are in the trace
- check_replay_at 39
+ check_replay_at $instruction_position(0)
}
# let's step forward and check again
with_test_prefix "stepi" {
gdb_test "stepi" ".*fun4\.5.*"
- check_replay_at 40
+ check_replay_at $instruction_position(1)
}
# with the next step, we stop replaying
@@ -91,14 +145,17 @@ with_test_prefix "end" {
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
- "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
+ "Recorded $instructions_count instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
]
}
+#recover from a missing lr register in arm
+gdb_test "record goto end"
+
# let's try nexti
with_test_prefix "reverse-nexti.1" {
gdb_test "reverse-nexti" ".*main\.2.*"
- check_replay_at 1
+ check_replay_at $instruction_position(2)
}
# we can't reverse-nexti any further
@@ -106,7 +163,7 @@ with_test_prefix "reverse-nexti.2" {
gdb_test "reverse-nexti" \
"No more reverse-execution history\.\r\n.*main\.2.*" \
"reverse-nexti.2"
- check_replay_at 1
+ check_replay_at $instruction_position(3)
}
# but we can step back again
@@ -115,32 +172,32 @@ with_test_prefix "nexti" {
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
- "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
+ "Recorded $instructions_count instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
]
}
# let's step from a goto position somewhere in the middle
with_test_prefix "goto" {
- gdb_test "record goto 22" ".*fun3\.2.*"
- with_test_prefix "goto 22" { check_replay_at 22 }
+ gdb_test "record goto $instruction_position(4) " ".*fun3\.2.*"
+ with_test_prefix "goto $instruction_position(4) " { check_replay_at $instruction_position(4) }
gdb_test "stepi" ".*fun1\.1.*" "stepi.3"
- with_test_prefix "stepi to 23" { check_replay_at 23 }
+ with_test_prefix "stepi to $instruction_position(5)" { check_replay_at $instruction_position(5) }
gdb_test "reverse-stepi" ".*fun3\.2.*" "reverse-stepi.3"
- with_test_prefix "reverse-stepi to 22" { check_replay_at 22 }
+ with_test_prefix "reverse-stepi to $instruction_position(6)" { check_replay_at $instruction_position(6) }
gdb_test "nexti" ".*fun3\.3.*"
- with_test_prefix "nexti to 27" { check_replay_at 27 }
+ with_test_prefix "nexti to $instruction_position(7) " { check_replay_at $instruction_position(7) }
gdb_test "reverse-nexti" ".*fun3\.2.*" "reverse-nexti.3"
- with_test_prefix "reverse-nexti to 22" { check_replay_at 22 }
+ with_test_prefix "reverse-nexti to $instruction_position(8)" { check_replay_at $instruction_position(8) }
}
# let's try to step off the left end
with_test_prefix "goto begin" {
gdb_test "record goto begin" ".*main\.2.*"
- check_replay_at 1
+ check_replay_at $instruction_position(9)
with_test_prefix "reverse-stepi" {
gdb_test "reverse-stepi" \
@@ -149,7 +206,7 @@ with_test_prefix "goto begin" {
gdb_test "reverse-stepi" \
"No more reverse-execution history\.\r\n.*main\.2.*" \
"reverse-stepi.2"
- check_replay_at 1
+ check_replay_at $instruction_position(10)
}
with_test_prefix "reverse-nexti" {
@@ -159,13 +216,13 @@ with_test_prefix "goto begin" {
gdb_test "reverse-nexti" \
"No more reverse-execution history\.\r\n.*main\.2.*" \
"reverse-nexti.2"
- check_replay_at 1
+ check_replay_at $instruction_position(11)
}
# we can step forward, though
with_test_prefix "stepi" {
gdb_test "stepi" ".*fun4\.1.*"
- check_replay_at 2
+ check_replay_at $instruction_position(12)
}
}
@@ -178,5 +235,5 @@ with_test_prefix "reverse-stepi" {
gdb_test "reverse-stepi" \
"No more reverse-execution history\.\r\n.*main\.2.*" \
"reverse-stepi.3"
- check_replay_at 1
+ check_replay_at $instruction_position(13)
}
diff --git a/gdb/testsuite/gdb.btrace/tailcall-only.exp b/gdb/testsuite/gdb.btrace/tailcall-only.exp
index 510f90c9d5e..7e449ee38da 100644
--- a/gdb/testsuite/gdb.btrace/tailcall-only.exp
+++ b/gdb/testsuite/gdb.btrace/tailcall-only.exp
@@ -43,6 +43,10 @@ if [info exists COMPILE] {
} else {
standard_testfile i686-tailcall-only.S
}
+} elseif { [istarget "arm*-*-*"] } {
+ standard_testfile arm-tailcall-only.S
+} elseif {[istarget "aarch64*-*-*"]} {
+ standard_testfile aarch64-tailcall-only.S
} else {
unsupported "target architecture not supported"
return -1
@@ -62,6 +66,10 @@ gdb_test_no_output "set record function-call-history-size 0"
# trace foo
gdb_test "step" ".*" "prepare for recording"
+# make sure we get out of function epilogue
+if { [istarget "arm*-*-*"] } {
+ gdb_test "stepi"
+}
gdb_test_no_output "record btrace"
gdb_test "stepi 4" ".*" "record branch trace"
diff --git a/gdb/testsuite/gdb.btrace/tailcall.exp b/gdb/testsuite/gdb.btrace/tailcall.exp
index 07a3ec103f4..602a9ed6fba 100644
--- a/gdb/testsuite/gdb.btrace/tailcall.exp
+++ b/gdb/testsuite/gdb.btrace/tailcall.exp
@@ -40,6 +40,10 @@ if [info exists COMPILE] {
} else {
standard_testfile i686-tailcall.S
}
+} elseif { [istarget "arm*-*-*"] } {
+ standard_testfile arm-tailcall.S
+} elseif { [istarget "aarch64*-*-*"] } {
+ standard_testfile aarch64-tailcall.S
} else {
unsupported "target architecture not supported"
return -1
@@ -48,6 +52,20 @@ if [info exists COMPILE] {
if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
return -1
}
+
+if {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ set bar_return_line 24
+ set bar_return_position 4
+ set main_return_line 38
+} elseif {[istarget "arm*-*-*"]} {
+ set bar_return_line 24
+ set bar_return_position 5
+ set main_return_line 41
+ } elseif {[istarget "aarch64*-*-*"]} {
+ set bar_return_line 23
+ set bar_return_position 6
+ set main_return_line 40
+}
if ![runto_main] {
untested "failed to run to main"
return -1
@@ -58,7 +76,17 @@ gdb_test_no_output "set record function-call-history-size 0"
# trace the call to foo
gdb_test_no_output "record btrace"
-gdb_test "next 2"
+
+# make sure we get out of function epilogue
+if {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
+ gdb_test "next 2"
+} elseif {[istarget "arm*-*-*"]} {
+ gdb_test "next 2"
+ gdb_test "stepi"
+} elseif {[istarget "aarch64*-*-*"]} {
+ gdb_test "next"
+ gdb_test "stepi"
+}
# show the flat branch trace
gdb_test "record function-call-history 1" [multi_line \
@@ -77,11 +105,11 @@ gdb_test "record function-call-history /c 1" [multi_line \
] "indented"
# go into bar
-gdb_test "record goto 4" ".*bar \\(\\) at .*tailcall.c:24\r\n.*"
+gdb_test "record goto $bar_return_position" ".*bar \\(\\) at .*tailcall.c:$bar_return_line\r\n.*"
# check the backtrace
gdb_test "backtrace" [multi_line \
- "#0.*bar \\(\\) at tailcall.c:24" \
+ "#0.*bar \\(\\) at tailcall.c:$bar_return_line" \
"#1.*foo \\(\\) at tailcall.c:29" \
"#2.*main \\(\\) at tailcall.c:37" \
"Backtrace stopped: not enough registers or memory available to unwind further" \
@@ -93,23 +121,23 @@ gdb_test "up" "#2\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" "up to main"
gdb_test "down" "#1\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" "down to foo"
# test stepping into and out of tailcalls.
-gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \
+gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:$main_return_line\r\n.*" \
"finish.1"
-gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*" \
+gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:$bar_return_line\r\n.*" \
"reverse-step.1"
gdb_test "reverse-finish" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" \
"reverse-finish.1"
gdb_test "reverse-step" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" \
"reverse-step.2"
-gdb_test "next" "\[^\r\n\]*38.*" \
+gdb_test "next" "\[^\r\n\]*$main_return_line.*" \
"next.1"
gdb_test "reverse-next" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" \
"reverse-next.1"
gdb_test "step" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" \
"step.1"
-gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \
+gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:$main_return_line\r\n.*" \
"finish.2"
-gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*" \
+gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:$bar_return_line\r\n.*" \
"reverse-step.3"
-gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \
+gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:$main_return_line\r\n.*" \
"finish.3"
diff --git a/gdb/testsuite/gdb.btrace/instruction_history.S b/gdb/testsuite/gdb.btrace/x86-instruction_history.S
similarity index 100%
rename from gdb/testsuite/gdb.btrace/instruction_history.S
rename to gdb/testsuite/gdb.btrace/x86-instruction_history.S
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 60f84d22aad..b7b11deab57 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -3232,7 +3232,7 @@ gdb_caching_proc skip_btrace_tests {
global srcdir subdir gdb_prompt inferior_exited_re
set me "skip_btrace_tests"
- if { ![istarget "i?86-*-*"] && ![istarget "x86_64-*-*"] } {
+ if { ![istarget "i?86-*-*"] && ![istarget "x86_64-*-*"] && ![istarget "arm*-*-*"] && ![istarget "aarch64*-*-*"]} {
verbose "$me: target does not support btrace, returning 1" 2
return 1
}
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 8/8] document btrace support for arm targets using coresight etm traces
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
` (6 preceding siblings ...)
2021-03-11 2:50 ` [PATCH v2 7/8] adapt btrace testcases for arm target Zied Guermazi
@ 2021-03-11 2:50 ` Zied Guermazi
2021-03-11 6:23 ` Eli Zaretskii
7 siblings, 1 reply; 10+ messages in thread
From: Zied Guermazi @ 2021-03-11 2:50 UTC (permalink / raw)
To: gdb-patches; +Cc: Zied Guermazi
This patch documents the extensions done in GDB to enable using
ARM Coresight traces for btrace.
gdb/ChangeLog
* gdb/NEWS: list new commands and remote packets for extending btrace
to support using ARM CoreSight Traces.
gdb/doc/ChangeLog
* gdb.texinfo (Process Record and Replay): Document extending
GDB btrace commands to support using ARM CoreSight traces.
(General Query Packets) Document extending GDB remote protocol
packets to support using ARM CoreSight traces for btrace.
---
gdb/NEWS | 30 ++++++++++++
gdb/doc/ChangeLog | 5 ++
gdb/doc/gdb.texinfo | 115 +++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 149 insertions(+), 1 deletion(-)
diff --git a/gdb/NEWS b/gdb/NEWS
index 7f5a745d0c0..0c31af6ed0b 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -2,6 +2,7 @@
(Organized release by release)
*** Changes since GDB 10
+* Record btrace now supports using ARM CoreSight ETM traces.
* Building GDB now requires GMP (The GNU Multiple Precision Arithmetic
Library).
@@ -35,6 +36,21 @@
* New commands
+record btrace etm
+record etm
+ Start branch trace recording using ARM CoreSight trace format (ETM).
+
+set|show record btrace etm buffer-size
+ Set and show the size of the ring buffer used for branch tracing in
+ ETM format.
+ The obtained size may differ from the requested size. Use "info
+ record" to see the obtained buffer size.
+
+set|show record btrace etm sink
+ Set and show the trace sink used for branch tracing in
+ ETM format.
+ Use "default" to reset it to default sink.
+
set debug event-loop
show debug event-loop
Control the display of debug output about GDB's event loop.
@@ -98,6 +114,20 @@ maintenance info sections
ARM Symbian arm*-*-symbianelf*
+* New remote packets
+
+Qbtrace:etm
+ Enable ARM CoreSight ETM Trace-based branch tracing for the current
+ process. The remote stub reports support for this packet to GDB's
+ qSupported query.
+
+Qbtrace-conf:etm:size
+ Set the requested ring buffer size for branch tracing in
+ ARM CoreSight ETM Trace format.
+
+Qbtrace-conf:etm:sink
+ Set the trace sink for branch tracing in ARM CoreSight ETM Trace format.
+
*** Changes in GDB 10
* There are new feature names for ARC targets: "org.gnu.gdb.arc.core"
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index add31a0cc39..b4b9faa20d5 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+2021-02-08 Zied Guermazi <zied.guermazi@trande.de>
+
+ * gdb.texinfo: Document extending btrace to support
+ ARM CoreSight traces commands and packets
+
2021-02-24 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.texinfo (Files): Document new 'maint info target-sections'
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 80ccf74a049..fd528442503 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -7371,15 +7371,19 @@ For architecture environments that support process record and replay,
@kindex record btrace
@kindex record btrace bts
@kindex record btrace pt
+@kindex record btrace etm
@kindex record bts
@kindex record pt
+@kindex record etm
@kindex rec
@kindex rec full
@kindex rec btrace
@kindex rec btrace bts
@kindex rec btrace pt
+@kindex rec btrace etm
@kindex rec bts
@kindex rec pt
+@kindex rec etm
@item record @var{method}
This command starts the process record and replay target. The
recording method can be specified as parameter. Without a parameter
@@ -7393,7 +7397,7 @@ replay implementation. This method allows replaying and reverse
execution.
@item btrace @var{format}
-Hardware-supported instruction recording, supported on Intel
+Hardware-supported instruction recording, supported on Intel and ARM
processors. This method does not record data. Further, the data is
collected in a ring buffer so old data will be overwritten when the
buffer is full. It allows limited reverse execution. Variables and
@@ -7427,6 +7431,13 @@ Decoding the recorded execution trace, on the other hand, is more
expensive than decoding @acronym{BTS} trace. This is mostly due to the
increased number of instructions to process. You should increase the
buffer-size with care.
+
+@item etm
+@cindex ARM CoreSight Trace
+Use the @dfn{ARM CoreSight Trace} recording format. In this
+format, @acronym{ETM, Extended Trace Macrocell} stores the processor
+execution trace in a compressed form that is afterwards
+decoded by @value{GDBN}.
@end table
Not all recording formats may be available on all processors.
@@ -7574,6 +7585,12 @@ and to read-write memory. Beware that the accessed memory corresponds
to the live target and not necessarily to the current replay
position.
+@item set record btrace etm sink @var{sink}
+Set ARM CoreSight ETM sink to collect traces.
+On @sc{gnu}/Linux systems, possible values for @var{sink} are the name of the
+files in the directory @file{/sys/bus/event_source/devices/cs_etm/sinks/}.
+Use the value @kbd{default} to reset it to default sink.
+
@item set record btrace cpu @var{identifier}
Set the processor to be used for enabling workarounds for processor
errata when decoding the trace.
@@ -7637,6 +7654,9 @@ Recorded 84872 instructions in 3189 functions (0 gaps) for thread 1 (...).
@item show record btrace replay-memory-access
Show the current setting of @code{replay-memory-access}.
+@item show record btrace etm sink
+Show ARM CoreSight ETM sink.
+
@item show record btrace cpu
Show the processor to be used for enabling trace decode errata
workarounds.
@@ -7688,6 +7708,29 @@ also need longer to process the branch trace data before it can be used.
Show the current setting of the requested ring buffer size for branch
tracing in Intel Processor Trace format.
+@kindex set record btrace etm
+@item set record btrace etm buffer-size @var{size}
+@itemx set record btrace etm buffer-size unlimited
+Set the requested ring buffer size for branch tracing in ARM
+CoreSight ETM Trace format. Default is 16KB.
+
+If @var{size} is a positive number, then @value{GDBN} will try to
+allocate a buffer of at least @var{size} bytes for each new thread
+that uses the btrace recording method and the Intel Processor Trace
+format. The actually obtained buffer size may differ from the
+requested @var{size}. Use the @code{info record} command to see the
+actual buffer size for each thread.
+
+If @var{limit} is @code{unlimited} or zero, @value{GDBN} will try to
+allocate a buffer of 4MB.
+
+Bigger buffers mean longer traces. On the other hand, @value{GDBN} will
+also need longer to process the branch trace data before it can be used.
+
+@item show record btrace etm buffer-size @var{size}
+Show the current setting of the requested ring buffer size for branch
+tracing in ARM CoreSight ETM Trace format.
+
@kindex info record
@item info record
Show various statistics about the recording depending on the recording
@@ -7739,6 +7782,12 @@ For the @code{pt} recording format, it also shows:
@item
Size of the perf ring buffer.
@end itemize
+
+For the @code{etm} recording format, it also shows:
+@itemize @bullet
+@item
+Size of the perf ring buffer.
+@end itemize
@end table
@kindex record delete
@@ -41659,6 +41708,21 @@ These are the currently defined stub features and their properties:
@tab @samp{-}
@tab No
+@item @samp{Qbtrace:etm}
+@tab Yes
+@tab @samp{-}
+@tab Yes
+
+@item @samp{Qbtrace-conf:etm:size}
+@tab Yes
+@tab @samp{-}
+@tab Yes
+
+
+@item @samp{Qbtrace-conf:etm:sink}
+@tab Yes
+@tab @samp{-}
+@tab Yes
@end multitable
These are the currently defined stub features, in more detail:
@@ -41835,9 +41899,11 @@ The remote stub understands the @samp{Qbtrace:off} packet.
@item Qbtrace:bts
The remote stub understands the @samp{Qbtrace:bts} packet.
+(@pxref{Qbtrace:bts}).
@item Qbtrace:pt
The remote stub understands the @samp{Qbtrace:pt} packet.
+(@pxref{Qbtrace:pt}).
@item Qbtrace-conf:bts:size
The remote stub understands the @samp{Qbtrace-conf:bts:size} packet.
@@ -41873,6 +41939,16 @@ The remote stub understands the @samp{QThreadEvents} packet.
@item no-resumed
The remote stub reports the @samp{N} stop reply.
+@item Qbtrace:etm
+The remote stub understands the @samp{Qbtrace:etm} packet.
+(@pxref{Qbtrace:etm}).
+
+@item Qbtrace-conf:etm:size
+The remote stub understands the @samp{Qbtrace-conf:etm:size} packet.
+
+@item Qbtrace-conf:etm:sink
+The remote stub understands the @samp{Qbtrace-conf:etm:sink} packet.
+
@end table
@item qSymbol::
@@ -42279,6 +42355,7 @@ A badly formed request or an error was encountered.
@end table
@item Qbtrace:bts
+@anchor{Qbtrace:bts}
Enable branch tracing for the current thread using Branch Trace Store.
Reply:
@@ -42290,6 +42367,7 @@ A badly formed request or an error was encountered.
@end table
@item Qbtrace:pt
+@anchor{Qbtrace:pt}
Enable branch tracing for the current thread using Intel Processor Trace.
Reply:
@@ -42335,6 +42413,41 @@ The ring buffer size has been set.
A badly formed request or an error was encountered.
@end table
+@item Qbtrace:etm
+@anchor{Qbtrace:etm}
+Enable branch tracing for the current thread using ARM CoreSight ETM Trace.
+
+Reply:
+@table @samp
+@item OK
+Branch tracing has been enabled.
+@item E.errtext
+A badly formed request or an error was encountered.
+@end table
+
+@item Qbtrace-conf:etm:size=@var{value}
+Set the requested ring buffer size for new threads that use the
+btrace recording method in etm format.
+
+Reply:
+@table @samp
+@item OK
+The ring buffer size has been set.
+@item E.errtext
+A badly formed request or an error was encountered.
+@end table
+
+@item Qbtrace-conf:etm:sink=@var{value}
+Set the requested trace sink for new threads that use the
+btrace recording method in etm format.
+
+Reply:
+@table @samp
+@item OK
+The ring buffer size has been set.
+@item E.errtext
+A badly formed request or an error was encountered.
+@end table
@end table
@node Architecture-Specific Protocol Details
--
2.25.1
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 8/8] document btrace support for arm targets using coresight etm traces
2021-03-11 2:50 ` [PATCH 8/8] document btrace support for arm targets using coresight etm traces Zied Guermazi
@ 2021-03-11 6:23 ` Eli Zaretskii
0 siblings, 0 replies; 10+ messages in thread
From: Eli Zaretskii @ 2021-03-11 6:23 UTC (permalink / raw)
To: Zied Guermazi; +Cc: gdb-patches
> From: Zied Guermazi <zied.guermazi@trande.de>
> Date: Thu, 11 Mar 2021 03:50:39 +0100
> Cc: Zied Guermazi <zied.guermazi@trande.de>
>
> diff --git a/gdb/NEWS b/gdb/NEWS
> index 7f5a745d0c0..0c31af6ed0b 100644
> --- a/gdb/NEWS
> +++ b/gdb/NEWS
This part is OK.
> +Use the value @kbd{default} to reset it to default sink.
Please use @code{default} or @samp{default}, not @kbd.
> +(@pxref{Qbtrace:bts}).
Please don't use the colon character in the names of anchors and in
the corresponding cross-references: those could cause trouble to some
Info readers, and are best avoided. Please choose some other
character, like '_'.
The documentation part of this patch series is approved as soon as
those 2 nits are fixed.
Thanks.
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2021-03-11 6:23 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-03-11 2:50 [PATCH v2 0/8] extend branch tracing to use ARM CoreSight traces Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 1/8] configure gdb build system for supporting btrace on arm processors Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 2/8] add btrace coresight related commands Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 3/8] start/stop btrace with coresight etm and parse etm buffer. nat independant Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 4/8] start/stop btrace with coresight etm and collect etm buffer on linux os Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 5/8] fix issue: gdb hangs in the command following a commad returning with TARGET_WAITKIND_NO_HISTORY Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 6/8] add support for coresight btrace via remote protocol Zied Guermazi
2021-03-11 2:50 ` [PATCH v2 7/8] adapt btrace testcases for arm target Zied Guermazi
2021-03-11 2:50 ` [PATCH 8/8] document btrace support for arm targets using coresight etm traces Zied Guermazi
2021-03-11 6:23 ` Eli Zaretskii
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).