[binutils-gdb] Add negative repeat count to 'x' command

[binutils-gdb] Add negative repeat count to 'x' command

[sergiodj+buildbot]

*** TEST RESULTS FOR COMMIT bb556f1facb86cdd1591d490f2d2d670bdd5a1ee ***

Author: Toshihito Kikuchi <k.toshihito@yahoo.de>
Branch: master
Commit: bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Add negative repeat count to 'x' command

This change adds support for specifying a negative repeat count to
all the formats of the 'x' command to examine memory backward.
A new testcase 'examine-backward' is added to cover this new feature.

Here's the example output from the new feature:

<format 'i'>
(gdb) bt
#0  Func1 (n=42, p=0x40432e "hogehoge") at main.cpp:5
#1  0x00000000004041fa in main (argc=1, argv=0x7fffffffdff8) at main.cpp:19
(gdb) x/-4i 0x4041fa
  0x4041e5 <main(int, char**)+11>: mov   %rsi,-0x10(%rbp)
  0x4041e9 <main(int, char**)+15>: lea   0x13e(%rip),%rsi
  0x4041f0 <main(int, char**)+22>: mov   $0x2a,%edi
  0x4041f5 <main(int, char**)+27>: callq 0x404147

<format 'x'>
(gdb) x/-4xw 0x404200
0x4041f0 <main(int, char**)+22>: 0x00002abf 0xff4de800 0x76e8ffff 0xb8ffffff
(gdb) x/-4
0x4041e0 <main(int, char**)+6>:  0x7d8910ec 0x758948fc 0x358d48f0 0x0000013e

gdb/ChangeLog:

	* NEWS: Mention that GDB now supports a negative repeat count in
	the 'x' command.
	* printcmd.c (decode_format): Allow '-' in the parameter
	"string_ptr" to accept a negative repeat count.
	(find_instruction_backward): New function.
	(read_memory_backward): New function.
	(integer_is_zero): New function.
	(find_string_backward): New function.
	(do_examine): Use new functions to examine memory backward.
	(_initialize_printcmd): Mention that 'x' command supports a negative
	repeat count.

gdb/doc/ChangeLog:

	* gdb.texinfo (Examining Memory): Document negative repeat
	count in the 'x' command.

gdb/testsuite/ChangeLog:

	* gdb.base/examine-backward.c: New file.
	* gdb.base/examine-backward.exp: New file.

Failures on Debian-i686, branch master

[sergiodj+buildbot]

Buildslave:
	wildebeest-debian-wheezy-i686

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Debian-i686/builds/3626>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/Debian-i686/.git/tree/?h=master&id=448f81228a5a2af98f89a10857543311fd07d658>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.threads/multiple-step-overs.exp: displaced=on: next: setup: continue to breakpoint: run to breakpoint in thread 3
PASS -> FAIL: gdb.threads/multiple-step-overs.exp: displaced=on: next: setup: unbreak loop in thread 3
PASS -> FAIL: gdb.threads/multiple-step-overs.exp: displaced=on: next: next
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Debian-i686/xfails/master/xfail;hb=b49a91b>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Debian-i686/xfails/master/xfail.table;hb=b49a91b>

*** COMPILATION FAILED *** Failures on AIX-POWER7-plain, branch master *** BREAKAGE ***

[sergiodj+buildbot]

Buildslave:
	aix-power7-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/AIX-POWER7-plain/builds/2454>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<Error fetching commit ID for bb556f1facb86cdd1591d490f2d2d670bdd5a1ee>

*** Failed to compiled GDB.  ***
============================

+++ The full log is too big to be posted here.
+++ These are the last 100 lines of it.

	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 534, object file ../bfd/libbfd.a[compress.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 469, object file ../bfd/libbfd.a[corefile.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 521, object file ../bfd/libbfd.a[format.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 515, object file ../bfd/libbfd.a[hash.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 463, object file ../bfd/libbfd.a[init.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 493, object file ../bfd/libbfd.a[libbfd.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 583, object file ../bfd/libbfd.a[linker.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 573, object file ../bfd/libbfd.a[opncls.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 489, object file ../bfd/libbfd.a[reloc.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 505, object file ../bfd/libbfd.a[section.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 483, object file ../bfd/libbfd.a[simple.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 519, object file ../bfd/libbfd.a[syms.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 507, object file ../bfd/libbfd.a[targets.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 585, object file ../bfd/libbfd.a[binary.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 613, object file ../bfd/libbfd.a[ihex.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 663, object file ../bfd/libbfd.a[srec.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 623, object file ../bfd/libbfd.a[tekhex.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 545, object file ../bfd/libbfd.a[verilog.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 822, object file ../bfd/libbfd.a[coff-rs6000.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 761, object file ../bfd/libbfd.a[xcofflink.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 651, object file ../bfd/libbfd.a[coffgen.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 787, object file ../bfd/libbfd.a[dwarf2.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 817, object file ../bfd/libbfd.a[coff64-rs6000.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 491, object file ../bfd/libbfd.a[aix5ppc-core.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 635, object file ../bfd/libbfd.a[plugin.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 471, object file ../bfd/libbfd.a[cpu-rs6000.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 471, object file ../bfd/libbfd.a[cpu-powerpc.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 469, object file ../bfd/libbfd.a[cpu-plugin.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 519, object file ../bfd/libbfd.a[rs6000-core.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
ld: 0711-380 STABSTRING ERROR: Symbol table entry 501, object file ../bfd/libbfd.a[archive64.o]
	Length of stabstring in .debug section is invalid.
	The stabstring is being deleted.
collect2: error: ld returned 12 exit status
gmake[2]: *** [gdb] Error 1
rm rust-exp.c
gmake[2]: Leaving directory `/home/shager/aix-power7-1/aix-power7-plain/build/gdb'
gmake[1]: *** [all-gdb] Error 2
gmake[1]: Leaving directory `/home/shager/aix-power7-1/aix-power7-plain/build'
gmake: *** [all] Error 2
============================

Failures on Fedora-x86_64-m32, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-x86-64-3

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m32/builds/3719>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/Fedora-x86_64-m32/.git/tree/?h=master&id=42c63bc25f4ccf3e7047b47f132c880814eb2b9c>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.ada/win_fu_syms.exp: compilation foo.adb
PASS -> FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: no new threads
PASS -> FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: set breakpoint always-inserted on
PASS -> FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: break break_fn
PASS -> FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: print seconds_left
PASS -> FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: set breakpoint always-inserted off
new FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: delete all breakpoints in delete_breakpoints
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m32/xfails/master/xfail;hb=f3519b3>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-m32/xfails/master/xfail.table;hb=f3519b3>

Failures on Fedora-ppc64be-cc-with-index, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-ppc64be-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64be-cc-with-index/builds/3663>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/Fedora-ppc64be-cc-with-index/.git/tree/?h=master&id=21bd77ab12d8c9952a8a8d945a96a96afa016393>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.base/checkpoint-ns.exp: breakpoint 1 4 one
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-ppc64be-cc-with-index/xfails/master/xfail;hb=>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-ppc64be-cc-with-index/xfails/master/xfail.table;hb=>

Failures on Fedora-ppc64le-native-extended-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-ppc64le-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64le-native-extended-gdbserver-m64/builds/3601>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<Error fetching commit ID for bb556f1facb86cdd1591d490f2d2d670bdd5a1ee>

Failures on Fedora-s390x-m64, branch master

[sergiodj+buildbot]

Buildslave:
	marist-fedora-s390x

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-s390x-m64/builds/3289>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/Fedora-s390x-m64/.git/tree/?h=master&id=cbfe792708c40f431d1ca95a735683274c8006f0>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.reverse/s390-mvcle.exp: check MVCLE record 1
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-s390x-m64/xfails/master/xfail;hb=f3519b3>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-s390x-m64/xfails/master/xfail.table;hb=f3519b3>

Failures on Fedora-ppc64be-native-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-ppc64be-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64be-native-gdbserver-m64/builds/3660>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<Error fetching commit ID for bb556f1facb86cdd1591d490f2d2d670bdd5a1ee>

Failures on Fedora-ppc64le-native-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-ppc64le-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64le-native-gdbserver-m64/builds/3589>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<Error fetching commit ID for bb556f1facb86cdd1591d490f2d2d670bdd5a1ee>

Failures on Fedora-ppc64be-native-extended-gdbserver-m64, branch master

[sergiodj+buildbot]

Buildslave:
	fedora-ppc64be-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64be-native-extended-gdbserver-m64/builds/3668>

Commit(s) tested:
	bb556f1facb86cdd1591d490f2d2d670bdd5a1ee

Author(s) (in the same order as the commits):
	Toshihito Kikuchi <k.toshihito@yahoo.de>

Subject:
	Add negative repeat count to 'x' command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<Error fetching commit ID for bb556f1facb86cdd1591d490f2d2d670bdd5a1ee>