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* [SCM] scox/dyninst: c93a51b7e31702961ecb060b36740dd0390d0a51
@ 2014-10-31 21:14 scox
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From: scox @ 2014-10-31 21:14 UTC (permalink / raw)
To: archer-commits
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The branch, scox/dyninst has been created
at c93a51b7e31702961ecb060b36740dd0390d0a51 (commit)
- Log -----------------------------------------------------------------
commit c93a51b7e31702961ecb060b36740dd0390d0a51
Author: Stan Cox <scox@redhat.com>
Date: Fri Oct 31 16:01:57 2014 -0400
Add a preliminary version of a gdbserver dyninst GDB remote serial server.
* Makefile.in: Make CXX and dyninst aware.
* configure.ac: Check for basename and dyninst.
* configure.srv: Add *-dyninst-linux.
* inferiors.h: Rename private to piprivate to avoid CXX complaints.
* (linux-aarch64-low.c, linux-arm-low.c, linux-low.c,
linux-mips-low.c, linux-x86-low.c, lynx-low.c, thread-db.c): Likewise.
* dyninst-low.cc: New. generic rsp packet handling for dyninst rsp server.
* dyninst-low.h: New. generic dyninst rsp declarations.
* dyninst-x86-low.cc: New. x86 specific dyninst rsp handling.
commit e5b470e24ce448a56230137a37d3b17299593041
Author: Nick Clifton <nickc@redhat.com>
Date: Wed Oct 29 20:58:13 2014 +0000
Fixes another memory corruption bug introduced by patches for PR 17512.
* elf.c (bfd_section_from_shdr): Fix heap use after free memory
leak.
commit f60325bea599bab4cb721c6e797bc6b908fa616c
Author: Joel Brobecker <brobecker@adacore.com>
Date: Wed Oct 29 12:57:04 2014 -0700
Document the GDB 7.8.1 release in gdb/ChangeLog
gdb/ChangeLog:
GDB 7.8.1 released.
commit 9726c3c179e375cc0cc73a593adfaef8ed5735ab
Author: Han Shen <shenhan@google.com>
Date: Wed Oct 29 11:28:46 2014 -0700
Misc about gold for aarch64 backend.
The patch does the following things:
-- Add support for ifunc.
-- Enable safe icf
-- Add support for TLSLD relocations
R_AARCH64_TLSLD_ADR_PAGE21,
R_AARCH64_TLSLD_ADD_LO12_NC,
R_AARCH64_TLSLD_MOVW_DTPREL_G1,
R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC.
(R_AARCH64_TLSLD_MOVW_* are used by LLVM.)
-- Add support for TLSLD->TLSLE relaxation.
-- Add support for R_AARCH64_LD_PREL_LO19, R_AARCH64_ADR_PREL_LO21.
-- Fix 2 encoding bugs in AArch64_relocate_functions::update_movnz.
-- Correct TLS relocation properties in gold/aarch64-reloc.def.
-- Update testsuite/icf_safe_so_test.cc, testsuite/icf_safe_test.sh.
gold/
2014-10-29 Han Shen <shenhan@google.com>
Jing Yu <jingyu@google.com>
* aarch64-reloc.def: Add LD_PREL_LO12, ADR_PREL_LO21,
TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
TLSLD_MOVW_DTPREL_G0_NC. Change property of TLS relocations to
Symbol::TLS_REF.
* aarch64.cc (Target_aarch64::do_can_check_for_function_pointers): New
method.
(Target_aarch64::reloc_needs_plt_for_ifunc): New method.
(Target_aarch64::tls_ld_to_le): New method.
(Target_aarch64::aarch64_info): Enable can_icf_inline_merge_sections
for 64bit targets.
(Output_data_plt_aarch64::irelative_rel_): New data member.
(Output_data_plt_aarch64::add_entry): Add irelative entries to plt.
(Output_data_plt_aarch64::add_local_ifunc_entry): New method.
(Output_data_plt_aarch64::add_relocation): New method.
(Output_data_plt_aarch64::do_write): Add gold_assert on got_irelative
offset. Add got_irelative size to got size.
(AArch64_relocate_functions): Typedef AArch64_valtype. Replace long
type string with the new typename.
(AArch64_relocate_functions::update_adr): Replace parameter x with
immed.
(AArch64_relocate_functions::update_movnz): Correct wrong val mask.
(AArch64_relocate_functions::reloc_common): New method.
(AArch64_relocate_funcsions::rela_general): Extract common part out
into reloc_common method.
(AArch64_relocate_functions::rela_general): Likewise.
(AArch64_relocate_functions::pcrela_general): Likewise.
(AArch64_relocate_functions::adr): New method.
(AArch64_relocate_functions::adrp): Calculate immed before calling
update_adr.
(AArch64_relocate_functions::adrp): Likewise.
(AArch64_relocate_functions::movnz): Cast x to SignedW type when
comparing x to 0. Calculate immed from ~x when x < 0.
(Target_aarch64::optimize_tls_reloc): Add new cases for
TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
TLSLD_MOVW_DTPREL_G0_NC.
(Target_aarch64::possible_function_pointer_reloc): Implement this
method.
(Target_aarch64::Scan::local_reloc_may_be_function_pointer): Update
comment.
(Target_aarch64::Scan::local): Add codes to handle STT_GNU_IFUNC
symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
(Target_aarch64::Scan::global): Add codes to handle STT_GNU_IFUNC
symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
(Target_aarch64::make_plt_entry): Call add_entry with two more
parameters.
(Target_aarch64::make_local_ifunc_plt_entry): New method.
(Target_aarch64::Relocate::relocate): Add cases for LD_PREL_LO19,
ADR_PREL_LO21, TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
(Target_aarch64::Relocate::relocate_tls): Add cases for
TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
TLSLD_MOVW_DTPREL_G0_NC.
* testsuite/icf_safe_so_test.cc: Correct test comment.
* testsuite/icf_safe_test.sh: Add AArch64 arch.
commit ab917dfb5ae0952c234a9bfa16bb3122fdfaf14c
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 18:25:27 2014 +0000
This PR shows that GDB can easily trigger an assertion here, in
infrun.c:
5392 /* Did we find the stepping thread? */
5393 if (tp->control.step_range_end)
5394 {
5395 /* Yep. There should only one though. */
5396 gdb_assert (stepping_thread == NULL);
5397
5398 /* The event thread is handled at the top, before we
5399 enter this loop. */
5400 gdb_assert (tp != ecs->event_thread);
5401
5402 /* If some thread other than the event thread is
5403 stepping, then scheduler locking can't be in effect,
5404 otherwise we wouldn't have resumed the current event
5405 thread in the first place. */
5406 gdb_assert (!schedlock_applies (currently_stepping (tp)));
5407
5408 stepping_thread = tp;
5409 }
Like:
gdb/infrun.c:5406: internal-error: switch_back_to_stepped_thread: Assertion `!schedlock_applies (1)' failed.
The way the assertion is written is assuming that with schedlock=step
we'll always leave threads other than the one with the stepping range
locked, while that's not true with the "next" command. With schedlock
"step", other threads still run unlocked when "next" detects a
function call and steps over it. Whether that makes sense or not,
still, it's documented that way in the manual. If another thread hits
an event that doesn't cause a stop while the nexting thread steps over
a function call, we'll get here and fail the assertion.
The fix is just to adjust the assertion. Even though we found the
stepping thread, we'll still step-over the breakpoint that just
triggered correctly.
Surprisingly, gdb.threads/schedlock.exp doesn't have any test that
steps over a function call. This commits fixes that. This ensures
that "next" doesn't switch focus to another thread, and checks whether
other threads run locked or not, depending on scheduler locking mode
and command. There's a lot of duplication in that file that this ends
cleaning up. There's more that could be cleaned up, but that would
end up an unrelated change, best done separately.
This new coverage in schedlock.exp happens to trigger the internal
error in question, like so:
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (1) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (3) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (5) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (7) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (9) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next does not change thread (switched to thread 0)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: current thread advanced - unlocked (wrong amount)
That's because we have more than one thread running the same loop, and
while one thread is stepping over a function call, the other thread
hits the step-resume breakpoint of the first, which needs to be
stepped over, and we end up in switch_back_to_stepped_thread exactly
in the problem case.
I think a simpler and more directed test is also useful, to not rely
on internal breakpoint magics. So this commit also adds a test that
has a thread trip on a conditional breakpoint that doesn't cause a
user-visible stop while another thread is stepping over a call. That
currently fails like this:
FAIL: gdb.threads/next-bp-other-thread.exp: schedlock=step: next over function call (GDB internal error)
Tested on x86_64 Fedora 20.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
PR gdb/17408
* infrun.c (switch_back_to_stepped_thread): Use currently_stepping
instead of assuming a thread with a stepping range is always
stepping.
gdb/testsuite/
2014-10-29 Pedro Alves <palves@redhat.com>
PR gdb/17408
* gdb.threads/schedlock.c (some_function): New function.
(call_function): New global.
(MAYBE_CALL_SOME_FUNCTION): New macro.
(thread_function): Call it.
* gdb.threads/schedlock.exp (get_args): Add description parameter,
and use it instead of a global counter. Adjust all callers.
(get_current_thread): Use "find current thread" for test message
here rather than having all callers pass down the same string.
(goto_loop): New procedure, factored out from ...
(my_continue): ... this.
(step_ten_loops): Change parameter from test message to command to
use. Adjust.
(list_count): Delete global.
(check_result): New procedure, factored out from duplicate top
level code.
(continue tests): Wrap in with_test_prefix.
(test_step): New procedure, factored out from duplicate top level
code.
(top level): Test "step" in combination with all scheduler-locking
modes. Test "next" in combination with all scheduler-locking
modes, and in combination with stepping over a function call or
not.
* gdb.threads/next-bp-other-thread.c: New file.
* gdb.threads/next-bp-other-thread.exp: New file.
commit 354204061c1eec5cec6e8bab0af164a267b1e67d
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 18:15:39 2014 +0000
PR 17408 - assertion failure in switch_back_to_stepped_thread
This PR shows that GDB can easily trigger an assertion here, in
infrun.c:
5392 /* Did we find the stepping thread? */
5393 if (tp->control.step_range_end)
5394 {
5395 /* Yep. There should only one though. */
5396 gdb_assert (stepping_thread == NULL);
5397
5398 /* The event thread is handled at the top, before we
5399 enter this loop. */
5400 gdb_assert (tp != ecs->event_thread);
5401
5402 /* If some thread other than the event thread is
5403 stepping, then scheduler locking can't be in effect,
5404 otherwise we wouldn't have resumed the current event
5405 thread in the first place. */
5406 gdb_assert (!schedlock_applies (currently_stepping (tp)));
5407
5408 stepping_thread = tp;
5409 }
Like:
gdb/infrun.c:5406: internal-error: switch_back_to_stepped_thread: Assertion `!schedlock_applies (1)' failed.
The way the assertion is written is assuming that with schedlock=step
we'll always leave threads other than the one with the stepping range
locked, while that's not true with the "next" command. With schedlock
"step", other threads still run unlocked when "next" detects a
function call and steps over it. Whether that makes sense or not,
still, it's documented that way in the manual. If another thread hits
an event that doesn't cause a stop while the nexting thread steps over
a function call, we'll get here and fail the assertion.
The fix is just to adjust the assertion. Even though we found the
stepping thread, we'll still step-over the breakpoint that just
triggered correctly.
Surprisingly, gdb.threads/schedlock.exp doesn't have any test that
steps over a function call. This commits fixes that. This ensures
that "next" doesn't switch focus to another thread, and checks whether
other threads run locked or not, depending on scheduler locking mode
and command. There's a lot of duplication in that file that this ends
cleaning up. There's more that could be cleaned up, but that would
end up an unrelated change, best done separately.
This new coverage in schedlock.exp happens to trigger the internal
error in question, like so:
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (1) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (3) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (5) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (7) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next to increment (9) (GDB internal error)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: next does not change thread (switched to thread 0)
FAIL: gdb.threads/schedlock.exp: schedlock=step: cmd=next: call_function=1: current thread advanced - unlocked (wrong amount)
That's because we have more than one thread running the same loop, and
while one thread is stepping over a function call, the other thread
hits the step-resume breakpoint of the first, which needs to be
stepped over, and we end up in switch_back_to_stepped_thread exactly
in the problem case.
I think a simpler and more directed test is also useful, to not rely
on internal breakpoint magics. So this commit also adds a test that
has a thread trip on a conditional breakpoint that doesn't cause a
user-visible stop while another thread is stepping over a call. That
currently fails like this:
FAIL: gdb.threads/next-bp-other-thread.exp: schedlock=step: next over function call (GDB internal error)
Tested on x86_64 Fedora 20.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
PR gdb/17408
* infrun.c (switch_back_to_stepped_thread): Use currently_stepping
instead of assuming a thread with a stepping range is always
stepping.
gdb/testsuite/
2014-10-29 Pedro Alves <palves@redhat.com>
PR gdb/17408
* gdb.threads/schedlock.c (some_function): New function.
(call_function): New global.
(MAYBE_CALL_SOME_FUNCTION): New macro.
(thread_function): Call it.
* gdb.threads/schedlock.exp (get_args): Add description parameter,
and use it instead of a global counter. Adjust all callers.
(get_current_thread): Use "find current thread" for test message
here rather than having all callers pass down the same string.
(goto_loop): New procedure, factored out from ...
(my_continue): ... this.
(step_ten_loops): Change parameter from test message to command to
use. Adjust.
(list_count): Delete global.
(check_result): New procedure, factored out from duplicate top
level code.
(continue tests): Wrap in with_test_prefix.
(test_step): New procedure, factored out from duplicate top level
code.
(top level): Test "step" in combination with all scheduler-locking
modes. Test "next" in combination with all scheduler-locking
modes, and in combination with stepping over a function call or
not.
* gdb.threads/next-bp-other-thread.c: New file.
* gdb.threads/next-bp-other-thread.exp: New file.
commit d3d4baedb6d247c6372678edd15195a1a93c2c6c
Author: Pedro Alves <palves@redhat.com>
Date: Thu Oct 23 17:13:35 2014 +0100
PR python/17372 - Python hangs when displaying help()
This is more of a readline/terminal issue than a Python one.
PR17372 is a regression in 7.8 caused by the fix for PR17072:
commit 0017922d0292d8c374584f6100874580659c9973
Author: Pedro Alves <palves@redhat.com>
Date: Mon Jul 14 19:55:32 2014 +0100
Background execution + pagination aborts readline/gdb
gdb_readline_wrapper_line removes the handler after a line is
processed. Usually, we'll end up re-displaying the prompt, and that
reinstalls the handler. But if the output is coming out of handling
a stop event, we don't re-display the prompt, and nothing restores the
handler. So the next input wakes up the event loop and calls into
readline, which aborts.
...
gdb/
2014-07-14 Pedro Alves <palves@redhat.com>
PR gdb/17072
* top.c (gdb_readline_wrapper_line): Tweak comment.
(gdb_readline_wrapper_cleanup): If readline is enabled, reinstall
the input handler callback.
The problem is that installing the input handler callback also preps
the terminal, putting it in raw mode and with echo disabled, which is
bad if we're going to call a command that assumes cooked/canonical
mode, and echo enabled, like in the case of the PR, Python's
interactive shell. Another example I came up with that doesn't depend
on Python is starting a subshell with "(gdb) shell /bin/sh" from a
multi-line command. Tests covering both these examples are added.
The fix is to revert the original fix for PR gdb/17072, and instead
restore the callback handler after processing an asynchronous target
event.
Furthermore, calling rl_callback_handler_install when we already have
some input in readline's line buffer discards that input, which is
obviously a bad thing to do while the user is typing. No specific
test is added for that, because I first tried calling it even if the
callback handler was still installed and that resulted in hundreds of
failures in the testsuite.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
PR python/17372
* event-top.c (change_line_handler): Call
gdb_rl_callback_handler_remove instead of
rl_callback_handler_remove.
(callback_handler_installed): New global.
(gdb_rl_callback_handler_remove, gdb_rl_callback_handler_install)
(gdb_rl_callback_handler_reinstall): New functions.
(display_gdb_prompt): Call gdb_rl_callback_handler_remove and
gdb_rl_callback_handler_install instead of
rl_callback_handler_remove and rl_callback_handler_install.
(gdb_disable_readline): Call gdb_rl_callback_handler_remove
instead of rl_callback_handler_remove.
* event-top.h (gdb_rl_callback_handler_remove)
(gdb_rl_callback_handler_install)
(gdb_rl_callback_handler_reinstall): New declarations.
* infrun.c (reinstall_readline_callback_handler_cleanup): New
cleanup function.
(fetch_inferior_event): Install it.
* top.c (gdb_readline_wrapper_line) Call
gdb_rl_callback_handler_remove instead of
rl_callback_handler_remove.
(gdb_readline_wrapper_cleanup): Don't call
rl_callback_handler_install.
gdb/testsuite/
2014-10-29 Pedro Alves <palves@redhat.com>
PR python/17372
* gdb.python/python.exp: Test a multi-line command that spawns
interactive Python.
* gdb.base/multi-line-starts-subshell.exp: New file.
commit d1e8523e40ed5094ed7d5b352ac6b0eabf9f690c
Author: Dennis Brueni <dbrueni@slickedit.com>
Date: Wed Oct 29 17:17:32 2014 +0000
Thix fixes an obvious coding error that led to a GDB crash on AIX or HPUX.
* elf.c (elfcore_write_lwpstatus): fix typo in call to memcpy
commit 64b588b51e04a80ac6f9a30817b5247ad1c4790b
Author: Nick Clifton <nickc@redhat.com>
Date: Wed Oct 29 16:34:04 2014 +0000
Updated/new translations provided by the Translations Project.
commit 6e5d7f393ed899c8e980b238be3cf23ec296e3f6
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 11:57:03 2014 +0000
Fix uninitialized value access when very first GDB command entered is <RET>
While running GDB under Valgrind, I noticed that if the very first
command entered is just <RET>, GDB accesses an uninitialized value:
$ valgrind ./gdb -q -nx
==26790== Memcheck, a memory error detector
==26790== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==26790== Using Valgrind-3.9.0 and LibVEX; rerun with -h for copyright info
==26790== Command: ./gdb -q -nx
==26790==
(gdb)
==26790== Conditional jump or move depends on uninitialised value(s)
==26790== at 0x619DFC: command_line_handler (event-top.c:588)
==26790== by 0x7813D5: rl_callback_read_char (callback.c:220)
==26790== by 0x6194B4: rl_callback_read_char_wrapper (event-top.c:166)
==26790== by 0x61988A: stdin_event_handler (event-top.c:372)
==26790== by 0x61847D: handle_file_event (event-loop.c:762)
==26790== by 0x617964: process_event (event-loop.c:339)
==26790== by 0x617A2B: gdb_do_one_event (event-loop.c:403)
==26790== by 0x617A7B: start_event_loop (event-loop.c:428)
==26790== by 0x6194E6: cli_command_loop (event-top.c:181)
==26790== by 0x60F86B: current_interp_command_loop (interps.c:317)
==26790== by 0x610A34: captured_command_loop (main.c:321)
==26790== by 0x60C728: catch_errors (exceptions.c:237)
==26790==
(gdb)
It's this check here:
/* If we just got an empty line, and that is supposed to repeat the
previous command, return the value in the global buffer. */
if (repeat && p == linebuffer && *p != '\\')
{
The problem is that linebuffer's contents were never initialized at
this point.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
* event-top.c (command_line_handler): Clear the first byte of
linebuffer, when it is first allocated.
commit 1e1e619b6b382f9b354d78018ddb73f0070375d2
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 14:49:05 2014 +0000
PR tui/16138 is about failure to initialize curses resulting in GDB
exiting instead of throwing an error. E.g.:
$ TERM=foo gdb
(gdb) layout asm
Error opening terminal: foo.
$
The problem is that we're calling initscr to initialize the screen.
As mentioned in
http://pubs.opengroup.org/onlinepubs/7908799/xcurses/initscr.html:
If errors occur, initscr() writes an appropriate error message to
standard error and exits.
^^^^^
Instead, we should use newterm:
"A program that needs an indication of error conditions, so it can
continue to run in a line-oriented mode if the terminal cannot support
a screen-oriented program, would also use this function."
After the patch:
$ TERM=foo gdb -q -nx
(gdb) layout asm
Cannot enable the TUI: error opening terminal [TERM=foo]
(gdb)
And then PR tui/17519 is about GDB not validating whether the terminal
has the necessary capabilities when enabling the TUI. If one tries to
enable the TUI with TERM=dumb (and e.g., from a shell within emacs),
GDB ends up with a clear screen, the cursor is placed at the
bottom/right corner of the screen, there's no prompt, typing shows no
echo, and there's no indication of what's going on. c-x,a gets you
out of the TUI, but it's completely non-obvious.
After the patch, we get:
$ TERM=dumb gdb -q -nx
(gdb) layout asm
Cannot enable the TUI: terminal doesn't support cursor addressing [TERM=dumb]
(gdb)
While at it, I've moved all the tui_allowed_p validation to
tui_enable, and expanded the error messages. Previously we'd get:
$ gdb -q -nx -i=mi
(gdb)
layout asm
&"layout asm\n"
&"TUI mode not allowed\n"
^error,msg="TUI mode not allowed"
and:
$ gdb -q -nx -ex "layout asm" > foo
TUI mode not allowed
While now we get:
$ gdb -q -nx -i=mi
(gdb)
layout asm
&"layout asm\n"
&"Cannot enable the TUI when the interpreter is 'mi'\n"
^error,msg="Cannot enable the TUI when the interpreter is 'mi'"
(gdb)
and:
$ gdb -q -nx -ex "layout asm" > foo
Cannot enable the TUI when output is not a terminal
Tested on x86_64 Fedora 20.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
PR tui/16138
PR tui/17519
* tui/tui-interp.c (tui_is_toplevel): Delete global.
(tui_allowed_p): Delete function.
* tui/tui.c: Include "interps.h".
(tui_enable): Don't use tui_allowed_p. Error out here with
detailed error messages if the TUI is the top level interpreter,
or if output is not a terminal. Use newterm instead of initscr,
and error out if initializing the terminal fails. Also error out if
the terminal doesn't support cursor addressing.
* tui/tui.h (tui_allowed_p): Delete declaration.
commit 551cb6a52d99c04055afed182479a8780a15f4a1
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 11:58:12 2014 +0000
TUI: don't let exceptions escape while handling readline key bindings
I noticed that with:
$ TERM=dumb ./gdb -q -nx
<c-x,a>
Cannot enable the TUI: terminal doesn't support cursor addressing [TERM=dumb]
(gdb)
The next key the user types is silently eaten.
The problem is that we're throwing an exception while in a readline
callback that isn't prepared for that:
(top-gdb) bt
#0 tui_enable () at /home/pedro/gdb/mygit/build/../src/gdb/tui/tui.c:388
#1 0x000000000051f47b in tui_rl_switch_mode (notused1=1, notused2=1) at /home/pedro/gdb/mygit/build/../src/gdb/tui/tui.c:101
#2 0x0000000000768d6f in _rl_dispatch_subseq (key=1, map=0xd069c0 <emacs_ctlx_keymap>, got_subseq=0) at /home/pedro/gdb/mygit/build/../src/readline/readline.c:774
#3 0x0000000000768acb in _rl_dispatch_callback (cxt=0x1ce6190) at /home/pedro/gdb/mygit/build/../src/readline/readline.c:686
#4 0x000000000078120b in rl_callback_read_char () at /home/pedro/gdb/mygit/build/../src/readline/callback.c:170
#5 0x0000000000619445 in rl_callback_read_char_wrapper (client_data=0x0) at /home/pedro/gdb/mygit/build/../src/gdb/event-top.c:166
#6 0x000000000061981b in stdin_event_handler (error=0, client_data=0x0) at /home/pedro/gdb/mygit/build/../src/gdb/event-top.c:372
#7 0x000000000061840e in handle_file_event (data=...) at /home/pedro/gdb/mygit/build/../src/gdb/event-loop.c:762
#8 0x00000000006178f5 in process_event () at /home/pedro/gdb/mygit/build/../src/gdb/event-loop.c:339
#9 0x00000000006179bc in gdb_do_one_event () at /home/pedro/gdb/mygit/build/../src/gdb/event-loop.c:403
#10 0x0000000000617a0c in start_event_loop () at /home/pedro/gdb/mygit/build/../src/gdb/event-loop.c:428
Here, in _rl_dispatch_subseq:
769
770 rl_executing_keymap = map;
771
772 rl_dispatching = 1;
773 RL_SETSTATE(RL_STATE_DISPATCHING);
774 (*map[key].function)(rl_numeric_arg * rl_arg_sign, key);
775 RL_UNSETSTATE(RL_STATE_DISPATCHING);
776 rl_dispatching = 0;
777
778 /* If we have input pending, then the last command was a prefix
779 command. Don't change the state of rl_last_func. Otherwise,
GDB is called from line 774, but longjmp'ing at that point leaves
rl_dispatching and RL_STATE_DISPATCHING set.
Fix this by wrapping tui_rl_switch_mode in a TRY_CATCH.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
* tui/tui.c (tui_rl_switch_mode): Wrap tui_enable/tui_disable in
TRY_CATCH.
commit 84eda397bcf3ebea00383e4a6a864af59723dafd
Author: Pedro Alves <palves@redhat.com>
Date: Wed Oct 29 14:23:57 2014 +0000
PR tui/16138, PR tui/17519, and misc failures to initialize the terminal
PR tui/16138 is about failure to initialize curses resulting in GDB
exiting instead of throwing an error. E.g.:
$ TERM=foo gdb
(gdb) layout asm
Error opening terminal: foo.
$
The problem is that we're calling initscr to initialize the screen.
As mentioned in
http://pubs.opengroup.org/onlinepubs/7908799/xcurses/initscr.html:
If errors occur, initscr() writes an appropriate error message to
standard error and exits.
^^^^^
Instead, we should use newterm:
"A program that needs an indication of error conditions, so it can
continue to run in a line-oriented mode if the terminal cannot support
a screen-oriented program, would also use this function."
After the patch:
$ TERM=foo gdb -q -nx
(gdb) layout asm
Cannot enable the TUI: error opening terminal [TERM=foo]
(gdb)
And then PR tui/17519 is about GDB not validating whether the terminal
has the necessary capabilities when enabling the TUI. If one tries to
enable the TUI with TERM=dumb (and e.g., from a shell within emacs),
GDB ends up with a clear screen, the cursor is placed at the
bottom/right corner of the screen, there's no prompt, typing shows no
echo, and there's no indication of what's going on. c-x,a gets you
out of the TUI, but it's completely non-obvious.
After the patch, we get:
$ TERM=dumb gdb -q -nx
(gdb) layout asm
Cannot enable the TUI: terminal doesn't support cursor addressing [TERM=dumb]
(gdb)
While at it, I've moved all the tui_allowed_p validation to
tui_enable, and expanded the error messages. Previously we'd get:
$ gdb -q -nx -i=mi
(gdb)
layout asm
&"layout asm\n"
&"TUI mode not allowed\n"
^error,msg="TUI mode not allowed"
and:
$ gdb -q -nx -ex "layout asm" > foo
TUI mode not allowed
While now we get:
$ gdb -q -nx -i=mi
(gdb)
layout asm
&"layout asm\n"
&"Cannot enable the TUI when the interpreter is 'mi'\n"
^error,msg="Cannot enable the TUI when the interpreter is 'mi'"
(gdb)
and:
$ gdb -q -nx -ex "layout asm" > foo
Cannot enable the TUI when output is not a terminal
Tested on x86_64 Fedora 20.
gdb/
2014-10-29 Pedro Alves <palves@redhat.com>
PR tui/16138
PR tui/17519
* tui/tui-interp.c (tui_is_toplevel): Delete global.
(tui_allowed_p): Delete function.
* tui/tui.c: Include "interps.h".
(tui_enable): Don't use tui_allowed_p. Error out here with
detailed error messages if the TUI is the top level interpreter,
or if output is not a terminal. Use newterm instead of initscr,
and error out if initializing the terminal fails. Also error out if
the terminal doesn't support cursor addressing.
* tui/tui.h (tui_allowed_p): Delete declaration.
commit 563e8d85161198df8a13de4bc660a047305458c9
Author: Yao Qi <yao@codesourcery.com>
Date: Wed Oct 29 21:43:05 2014 +0800
Prepare directory in case test_system fails
In gdb.base/fileio.c, some functions may depend on others. For
example, test_rename renames a file to one directory which is created
in test_system. That is means, if test_system fails, test_rename
fails too, which is not a good practise, IMO.
In test_system, system ("mkdir -p XX") is used to create directories
needed for test_rename. In this patch, we use dejagnu remote_exec
proc to create these directories on host.
In my gdb testing, mingw32 host and arm-none-eabi target, system
("mkdir -p XX") doesn't work properly (this issue can be addressed
separately), and this patch fixes the following fails.
FAIL: gdb.base/fileio.exp: Renaming a directory to a non-empty directory returns ENOTEMPTY or EEXIST
FAIL: gdb.base/fileio.exp: Unlink a file
FAIL: gdb.base/fileio.exp: Unlinking a file in a directory w/o write access returns EACCES
gdb/testsuite:
2014-10-29 Yao Qi <yao@codesourcery.com>
* gdb.base/fileio.exp: Make directories on host.
commit 0ea4d52e4396f6fdf44e6b0d5a21db17cad41ec7
Author: Yao Qi <yao@codesourcery.com>
Date: Wed Oct 29 21:43:05 2014 +0800
Close the file in fileio.exp test
I see the following fail in fileio.exp on mingw32 host gdb,
rename 1: ret = -1, errno = 13^M
^M
Breakpoint 2, stop () at fileio.c:76^M
76 static void stop () {}^M
(gdb) FAIL: gdb.base/fileio.exp: Rename a file
the test fails to rename a file which is not expected. The previous
test test_write doesn't close the file, so the rename fails as a
result on Windows. This patch fixes it by closing file in test_write,
and the fail goes away.
rename 1: ret = 0, errno = 0 OK^M
^M
Breakpoint 2, stop () at fileio.c:76^M
76 static void stop () {}^M
(gdb) PASS: gdb.base/fileio.exp: Rename a file
gdb/testsuite:
2014-10-29 Yao Qi <yao@codesourcery.com>
* gdb.base/fileio.c (test_write): Close the file.
commit 6041179a7496602f881b6f0a8c0bc3a8f1742cb7
Author: Joel Brobecker <brobecker@adacore.com>
Date: Thu Oct 23 08:25:20 2014 -0700
ARM: stricter __stack_chk_guard check during prologue analysis
We are trying to insert a breakpoint on line 4 for the following
Ada code.
3 procedure STR is
4 XX : String (1 .. Blocks.Sz) := (others => 'X'); -- STOP
5 K : Integer;
6 begin
7 K := 13;
The code generated on ARM (-march=armv7-m) starts like this:
(gdb) disass str'address
Dump of assembler code for function _ada_str:
--# Line str.adb:3
0x08000014 <+0>: push {r4, r7, lr}
0x08000016 <+2>: sub sp, #28
0x08000018 <+4>: add r7, sp, #0
0x0800001a <+6>: mov r3, sp
0x0800001c <+8>: mov r4, r3
--# Line str.adb:4
0x0800001e <+10>: ldr r3, [pc, #84] ; (0x8000074 <_ada_str+96>)
0x08000020 <+12>: ldr r3, [r3, #0]
0x08000022 <+14>: str r3, [r7, #20]
0x08000024 <+16>: ldr r3, [r7, #20]
[...]
When computing the address related to str.adb:4, GDB correctly
resolves it to 0x0800001e first, but then considers the next
3 instructions as being part of the prologue because it thinks
they are part of stack-protector code. As a result, instead
of inserting the breakpoint at line 4, it skips those instruction
and consequently the rest of the instructions until the start
of the next line, which his line 7.
The stack-protector code is expected to start like this...
ldr Rn, .Label
....
.Lable:
.word __stack_chk_guard
... but the implementation actually accepts a sequence where
the ldr location points to an address for which there is no symbol.
It only aborts if the address points to a symbol which is not
__stack_chk_guard.
Since the __stack_chk_guard symbol is always expected to exist
when used (it lives in .dynsym), this patch fixes the issue by
requiring that the ldr gets the address of the __stack_chk_guard
symbol. If the address could not be resolved, then it rejects
the sequence as being stack-protector code.
gdb/ChangeLog:
* arm-tdep.c (arm_skip_stack_protector): Return early if
address loaded by first "ldr" instruction does not have
a corresponding minimal symbol. Update comment.
Tested on arm-eabi using AdaCore's testsuite.
Tested on arm-linux-gnueabi by Yao as well.
commit 6ae274b7dc305ae7cebcf55c5018dab05228235a
Author: Yao Qi <yao@codesourcery.com>
Date: Wed Oct 29 13:39:16 2014 +0800
Fix skipping stack protector on arm
This patch fixes the bug in my patch skipping stack protector
https://www.sourceware.org/ml/gdb-patches/2010-12/msg00110.html
In my skipping stack protector patch, I misunderstood the constant vs.
immediate on instruction encodings, and treated immediate as constant
by mistake. The instruction 'ldr Rd, [PC, #immed]' loads the
address of __stack_chk_guard to Rd, and #immed is an offset from PC.
We should get the __stack_chk_guard from *(pc + #immed).
As a result of this mistake, arm_analyze_load_stack_chk_guard returns
the wrong address of __stack_chk_guard, and the symbol
__stack_chk_guard can't be found. However, we continue to match the
following instructions when symbol isn't found, so the code still
works. In other words, the code just matches the instruction pattern
without checking __stack_chk_guard symbol correctly.
Joel's patch <https://sourceware.org/ml/gdb-patches/2014-10/msg00605.html>
makes the heuristics stricter that we stop matching instructions if
symbol __stack_chk_guard isn't found. Then the bug is exposed. This
patch is to correct the load address computation for ldr instruction,
and it fixes some fails in gdb.mi/gdb792.exp on armv4t both arm and
thumb mode.
Regression tested on arm-linux-gnueabi target with
{armv4t, armv7-a} x {marm, mthumb} x {-fstack-protector,-fno-stack-protector}
gdb:
2014-10-29 Yao Qi <yao@codesourcery.com>
* arm-tdep.c (arm_analyze_load_stack_chk_guard): Compute the
loaded address correctly of ldr instruction.
commit 5e1b37e7a31f898916d3d5b7e9f6f4f6bf2b50ce
Author: Alan Modra <amodra@gmail.com>
Date: Wed Oct 29 09:31:03 2014 +1030
daily update
commit 7f5ef60532b466ec7a83a943f36e93e32e30eafe
Author: Pedro Alves <palves@redhat.com>
Date: Tue Oct 28 13:42:11 2014 +0000
PR gdb/12623: non-stop crashes inferior, PC adjustment and 1-byte insns
TL;DR - if we step an instruction that is as long as
decr_pc_after_break (1-byte on x86) right after removing the
breakpoint at PC, in non-stop mode, adjust_pc_after_break adjusts the
PC, but it shouldn't.
In non-stop mode, when a breakpoint is removed, it is moved to the
"moribund locations" list. This is because other threads that are
running may have tripped on that breakpoint as well, and we haven't
heard about it. When a trap is reported, we check if perhaps it was
such a deleted breakpoint that caused the trap. If so, we also need
to adjust the PC (decr_pc_after_break).
Now, say that, on x86:
- a breakpoint was placed at an address where we have an instruction
of the same length as decr_pc_after_break on this arch (1 on x86).
- the breakpoint is removed, and thus put on the moribund locations
list.
- the thread is single-stepped.
As there's no breakpoint inserted at PC anymore, the single-step
actually executes the 1-byte instruction normally. GDB should _not_
adjust the PC for the resulting SIGTRAP. But, adjust_pc_after_break
confuses the step SIGTRAP reported for this single-step as being a
SIGTRAP for the moribund location of the breakpoint that used to be at
the previous PC, and so infrun applies the decr_pc_after_break
adjustment incorrectly.
The confusion comes from the special case mentioned in the comment:
static void
adjust_pc_after_break (struct execution_control_state *ecs)
{
...
As a special case, we could have hardware single-stepped a
software breakpoint. In this case (prev_pc == breakpoint_pc),
we also need to back up to the breakpoint address. */
if (thread_has_single_step_breakpoints_set (ecs->event_thread)
|| !ptid_equal (ecs->ptid, inferior_ptid)
|| !currently_stepping (ecs->event_thread)
|| (ecs->event_thread->stepped_breakpoint
&& ecs->event_thread->prev_pc == breakpoint_pc))
regcache_write_pc (regcache, breakpoint_pc);
The condition that incorrectly triggers is the
"ecs->event_thread->prev_pc == breakpoint_pc" one.
Afterwards, the next resume resume re-executes an instruction that had
already executed, which if you're lucky, results in the inferior
crashing. If you're unlucky, you'll get silent bad behavior...
The fix is to remember that we stepped a breakpoint. Turns out the
only case we step a breakpoint instruction today isn't covered by the
testsuite. It's the case of a 'handle nostop" signal arriving while a
step is in progress _and_ we have a software watchpoint, which forces
always single-stepping. This commit extends sigstep.exp to cover
that, and adds a new test for the adjust_pc_after_break issue.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-28 Pedro Alves <palves@redhat.com>
PR gdb/12623
* gdbthread.h (struct thread_info) <stepped_breakpoint>: New
field.
* infrun.c (resume) <stepping breakpoint instruction>: Set the
thread's stepped_breakpoint field. Skip if reverse debugging.
Add comment.
(init_thread_stepping_state, handle_signal_stop): Clear the
thread's stepped_breakpoint field.
gdb/testsuite/
2014-10-28 Pedro Alves <palves@redhat.com>
PR gdb/12623
* gdb.base/sigstep.c (no_handler): New global.
(main): If 'no_handler is true, set the signal handlers to
SIG_IGN.
* gdb.base/sigstep.exp (breakpoint_over_handler): Add
with_sw_watch and no_handler parameters. Handle them.
(top level) <stepping over handler when stopped at a breakpoint
test>: Add a test axis for testing with a software watchpoint, and
another for testing with the signal handler set to SIG_IGN.
* gdb.base/step-sw-breakpoint-adjust-pc.c: New file.
* gdb.base/step-sw-breakpoint-adjust-pc.exp: New file.
commit abbdbd03db7eea82cadbb418da733991cba91b15
Author: Pedro Alves <palves@redhat.com>
Date: Tue Oct 28 15:51:30 2014 +0000
Test for PR gdb/17511, spurious SIGTRAP after stepping into+in signal handler
I noticed that when I single-step into a signal handler with a
pending/queued signal, the following single-steps while the program is
in the signal handler leave $eflags.TF set. That means subsequent
continues will trap after one instruction, resulting in a spurious
SIGTRAP being reported to the user.
This is a kernel bug; I've reported it to kernel devs (turned out to
be a known bug). I'm seeing it on x86_64 Fedora 20 (Linux
3.16.4-200.fc20.x86_64), and I was told it's still not fixed upstream.
This commit extends gdb.base/sigstep.exp to cover this use case,
xfailed.
Here's what the bug looks like:
(gdb) start
Temporary breakpoint 1, main () at si-handler.c:48
48 setup ();
(gdb) next
50 global = 0; /* set break here */
Let's queue a signal, so we can step into the handler:
(gdb) handle SIGUSR1
Signal Stop Print Pass to program Description
SIGUSR1 Yes Yes Yes User defined signal 1
(gdb) queue-signal SIGUSR1
TF is not set:
(gdb) display $eflags
1: $eflags = [ PF ZF IF ]
Now step into the handler -- "si" does PTRACE_SINGLESTEP+SIGUSR1:
(gdb) si
sigusr1_handler (sig=0) at si-handler.c:31
31 {
1: $eflags = [ PF ZF IF ]
No TF yet. But another single-step...
(gdb) si
0x0000000000400621 31 {
1: $eflags = [ PF ZF TF IF ]
... ends up with TF left set. This results in PTRACE_CONTINUE
trapping after each instruction is executed:
(gdb) c
Continuing.
Program received signal SIGTRAP, Trace/breakpoint trap.
0x0000000000400624 in sigusr1_handler (sig=0) at si-handler.c:31
31 {
1: $eflags = [ PF ZF TF IF ]
(gdb) c
Continuing.
Program received signal SIGTRAP, Trace/breakpoint trap.
sigusr1_handler (sig=10) at si-handler.c:32
32 global = 0;
1: $eflags = [ PF ZF TF IF ]
(gdb)
Note that even another PTRACE_SINGLESTEP does not fix it:
(gdb) si
33 }
1: $eflags = [ PF ZF TF IF ]
(gdb)
Eventually, it gets "fixed" by the rt_sigreturn syscall, when
returning out of the handler:
(gdb) bt
#0 sigusr1_handler (sig=10) at si-handler.c:33
#1 <signal handler called>
#2 main () at si-handler.c:50
(gdb) set disassemble-next-line on
(gdb) si
0x0000000000400632 33 }
0x0000000000400631 <sigusr1_handler+17>: 5d pop %rbp
=> 0x0000000000400632 <sigusr1_handler+18>: c3 retq
1: $eflags = [ PF ZF TF IF ]
(gdb)
<signal handler called>
=> 0x0000003b36a358f0 <__restore_rt+0>: 48 c7 c0 0f 00 00 00 mov $0xf,%rax
1: $eflags = [ PF ZF TF IF ]
(gdb) si
<signal handler called>
=> 0x0000003b36a358f7 <__restore_rt+7>: 0f 05 syscall
1: $eflags = [ PF ZF TF IF ]
(gdb)
main () at si-handler.c:50
50 global = 0; /* set break here */
=> 0x000000000040066b <main+9>: c7 05 cb 09 20 00 00 00 00 00 movl $0x0,0x2009cb(%rip) # 0x601040 <global>
1: $eflags = [ PF ZF IF ]
(gdb)
The bug doesn't happen if we instead PTRACE_CONTINUE into the signal
handler -- e.g., set a breakpoint in the handler, queue a signal, and
"continue".
gdb/testsuite/
2014-10-28 Pedro Alves <palves@redhat.com>
PR gdb/17511
* gdb.base/sigstep.c (handler): Add a few more writes to 'done'.
* gdb.base/sigstep.exp (other_handler_location): New global.
(advance): Support stepping into the signal handler, and running
commands while in the handler.
(in_handler_map): New global.
(top level): In the advance test, add combinations for getting
into the handler with stepping commands, and for running commands
in the handler. Add comment descripting the advancei tests.
commit 5a4b0ccc20ba30caef53b01bee2c0aaa5b855339
Author: Nick Clifton <nickc@redhat.com>
Date: Tue Oct 28 15:42:56 2014 +0000
More fixes for corrupt binaries crashing the binutils.
PR binutils/17512
* elf.c (bfd_section_from_shdr): Allocate and free the recursion
detection table on a per-bfd basis.
* peXXigen.c (pe_print_edata): Handle binaries with a truncated
export table.
commit 1df4399f27f8ee817d8eb4c73bba42bb65844303
Author: Pedro Alves <palves@redhat.com>
Date: Tue Oct 28 13:42:10 2014 +0000
gdb.base/sigstep.exp: cleanup and make it easier to extend
Hacking on sigstep.exp, I found it harder to understand and extend
than ideal.
- GDB is currently not restarted between the different
tests/combinations in the file, and some parts of the tests' setup
are done on the top level, and shared between tests. It's not
trivial to understand which breakpoints each test procedure expects
to be set or not set. And it's not trivial to disable parts of the
test if you want quickly try out just a subset of the tests
(running the whole file takes a bit).
- Because GDB is currently not restarted between tests, if some test
triggers a ptrace/kernel bug, the following tests may end up with
cascading fails. That makes it hard to add a test to cover a
kernel bug that isn't fixed yet, with a xfail/kfail. E.g,. note
how with kernels with bug gdb/8744 (stepi over sigreturn syscall
exits program) the test program exits, and nothing restarts it
afterwards...
- The manual test message prefix management gets a bit in the way.
Nowadays, we have with_test_prefix which makes it simpler.
- 'i' is used as parameter name in the various procedures, meaning
'the command the test', which isn't as obvious as it could.
This commit addresses all that.
gdb/testsuite/
2014-10-28 Pedro Alves <palves@redhat.com>
* gdb.base/sigstep.exp: Use build_executable instead of
prepare_for_testing.
(top level): Move code that starts GDB, runs to main and creates a
display to ...
(restart): ... this new procedure.
(top level): Move backtrace from signal handler test to ...
(validate_backtrace): ... this new procedure.
(advance, advancei): Rename parameter from 'i' to 'cmd'. Use
with_test_prefix. Always restart GDB.
(skip_to_handler): Rename parameter from 'i' to 'cmd'. Use
with_test_prefix. Always restart GDB. No need to delete
breakpoints after the test.
(test_skip_handler): Remove prefix parameter.
(skip_over_handler, breakpoint_to_handler)
(breakpoint_to_handler_entry, breakpoint_over_handler): Rename
parameter from 'i' to 'cmd'. Use with_test_prefix. Always
restart GDB. No need to delete breakpoints after the test.
(top level): Use foreach to call the test procedures with
different commands.
commit a5b6e449e36bcdb162271707fa145f316053ebbc
Author: Pedro Alves <palves@redhat.com>
Date: Tue Oct 28 14:32:51 2014 +0000
update bug numbers (GNATS -> Bugzilla) in a few signal related tests
This makes it easier to find the bugs in Bugzilla.
gdb/testsuite/
2014-10-28 Pedro Alves <palves@redhat.com>
* gdb.base/sigaltstack.exp: Update to use Bugzilla bug numbers
instead of GNATS numbers.
* gdb.base/sigbpt.exp: Likewise.
* gdb.base/siginfo.exp: Likewise.
* gdb.base/sigstep.exp: Likewise.
commit 7d1a114c44db3d7055afe48868f939ba95a64b7b
Author: Pedro Alves <palves@redhat.com>
Date: Tue Oct 28 11:35:10 2014 +0000
Workaround remote targets that report an empty list to qfThreadInfo
In https://sourceware.org/ml/gdb-patches/2014-10/msg00652.html, Sandra
shows a target that was broken by the recent update_thread_list
optimization:
(gdb) target remote qa8-centos32-cs:10514
...
(gdb) continue
Continuing.
Cannot execute this command without a live selected thread.
(gdb)
The error means that the current thread is in "exited" state when the
continue command is processed. The root of the problem was found
here:
> Sending packet: $Hg0#df...Packet received:
...
> Sending packet: $?#3f...Packet received: S00
> Sending packet: $qfThreadInfo#bb...Packet received: l
> Sending packet: $Hc-1#09...Packet received:
> Sending packet: $qC#b4...Packet received: unset
This target doesn't really support threads (no thread indication in
stop reply packets; no support for qC), but then supports
qfThreadInfo, and returns an empty thread list to GDB.
See https://sourceware.org/ml/gdb-patches/2014-10/msg00665.html for
why the target does that.
As remote_update_thread_list deletes threads from GDB's list that are
not found in the thread list that the target reports, the result is
that GDB deletes the "fake" main thread that GDB added itself. (As
that thread is currently selected, it is marked "exited" instead of
being deleted straight away.)
This commit avoids deleting the main thread in this scenario.
gdb/
2014-10-27 Pedro Alves <palves@redhat.com>
* remote.c (remote_thread_alive): New, factored out from ...
(remote_thread_alive): ... this.
(remote_update_thread_list): Bail out before deleting threads if
the target returned an empty list, and, the current thread has a
magic/fake ptid.
commit 708d7d0d11f0f2d776171979aa3479e8e12a38a0
Author: Nick Clifton <nickc@redhat.com>
Date: Tue Oct 28 10:48:14 2014 +0000
This patch fixes a flaw in the SREC parser which could cause a stack overflow
and potential secuiryt breach.
PR binutils/17510
* srec.c (srec_bad_byte): Increase size of buf to allow for
negative values.
(srec_scan): Use an unsigned char buffer to hold header bytes.
commit 6fb9c0f83252a79b2f1a3f8e75fa117ca7a4d589
Author: Alan Modra <amodra@gmail.com>
Date: Tue Oct 28 09:30:34 2014 +1030
daily update
commit e5f8a7cc2d376c81749b6e4a4efc034201cf683c
Author: Pedro Alves <palves@redhat.com>
Date: Mon Oct 27 20:24:59 2014 +0000
stepi/nexti: skip signal handler if "handle nostop" signal arrives
I noticed that "si" behaves differently when a "handle nostop" signal
arrives while the step is in progress, depending on whether the
program was stopped at a breakpoint when "si" was entered.
Specifically, in case GDB needs to step off a breakpoint, the handler
is skipped and the program stops in the next "mainline" instruction.
Otherwise, the "si" stops in the first instruction of the signal
handler.
I was surprised the testsuite doesn't catch this difference. Turns
out gdb.base/sigstep.exp covers a bunch of cases related to stepping
and signal handlers, but does not test stepi nor nexti, only
step/next/continue.
My first reaction was that stopping in the signal handler was the
correct thing to do, as it's where the next user-visible instruction
that is executed is. I considered then "nexti" -- a signal handler
could be reasonably considered a subroutine call to step over, it'd
seem intuitive to me that "nexti" would skip it.
But then, I realized that signals that arrive while a plain/line
"step" is in progress _also_ have their handler skipped. A user might
well be excused for being confused by this, given:
(gdb) help step
Step program until it reaches a different source line.
And the signal handler's sources will be in different source lines,
after all.
I think that having to explain that "stepi" steps into handlers, (and
that "nexti" wouldn't according to my reasoning above), while "step"
does not, is a sign of an awkward interface.
E.g., if a user truly is interested in stepping into signal handlers,
then it's odd that she has to either force the signal to "handle
stop", or recall to do "stepi" whenever such a signal might be
delivered. For that use case, it'd seem nicer to me if "step" also
stepped into handlers.
This suggests to me that we either need a global "step-into-handlers"
setting, or perhaps better, make "handle pass/nopass stop/nostop
print/noprint" have have an additional axis - "handle
stepinto/nostepinto", so that the user could configure whether
handlers for specific signals should be stepped into.
In any case, I think it's simpler (and thus better) for all step
commands to behave the same. This commit thus makes "si/ni" skip
handlers for "handle nostop" signals that arrive while the command was
already in progress, like step/next do.
To be clear, nothing changes if the program was stopped for a signal,
and the user enters a stepping command _then_ -- GDB still steps into
the handler. The change concerns signals that don't cause a stop and
that arrive while the step is in progress.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-27 Pedro Alves <palves@redhat.com>
* infrun.c (handle_signal_stop): Also skip handlers when a random
signal arrives while handling a "stepi" or a "nexti". Set the
thread's 'step_after_step_resume_breakpoint' flag.
gdb/doc/
2014-10-27 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Continuing and Stepping): Add cross reference to
info on stepping and signal handlers.
(Signals): Explain stepping and signal handlers. Add context
index entry, and cross references.
gdb/testsuite/
2014-10-27 Pedro Alves <palves@redhat.com>
* gdb.base/sigstep.c (dummy): New global.
(main): Issue a couple writes to the new global.
* gdb.base/sigstep.exp (get_next_pc, test_skip_handler): New
procedures.
(skip_over_handler): Use test_skip_handler.
(top level): Call skip_over_handler for stepi and nexti too.
(breakpoint_over_handler): Use test_skip_handler.
(top level): Call breakpoint_over_handler for stepi and nexti too.
commit bf67003b4567600ed3022a439207ac8f26454f91
Author: Nick Clifton <nickc@redhat.com>
Date: Mon Oct 27 18:05:37 2014 +0000
This fixes more seg-faults in tools like "strings" and "objdump" when
presented with corrupt binaries.
PR binutils/17512
* elf.c (bfd_section_from_shdr): Detect and warn about ELF
binaries with a group of sections linked by the string table
indicies.
* peXXigen.c (pe_print_edata): Detect out of range rvas and
entry counts for the Export Address table, Name Pointer table
and Ordinal table.
commit 7e1e19887abd24aeb15066b141cdff5541e0ec8e
Author: Nick Clifton <nickc@redhat.com>
Date: Mon Oct 27 14:45:06 2014 +0000
Fix a seg-fault in strings and other binutuils when parsing a corrupt PE
executable with an invalid value in the NumberOfRvaAndSizes field of the
AOUT header.
PR binutils/17512
* peXXigen.c (_bfd_XXi_swap_aouthdr_in): Handle corrupt binaries
with an invalid value for NumberOfRvaAndSizes.
commit 493a33860c71cac998f1a56d6d87d6faa801fbaa
Author: Nick Clifton <nickc@redhat.com>
Date: Mon Oct 27 12:43:16 2014 +0000
This patch closes a potential security hole in applications that use
the bfd library to parse binaries containing maliciously corrupt section
group headers.
PR binutils/17510
* elf.c (setup_group): Improve handling of corrupt group
sections.
commit 763905a3ad8f98d33bd9319790a8d53904554265
Author: Yao Qi <yao@codesourcery.com>
Date: Mon Oct 27 16:37:38 2014 +0800
Fix trace file fails on powerpc64
I see the following fails on powerpc64-linux,
(gdb) target tfile tfile-basic.tf^M
warning: Uploaded tracepoint 1 has no source location, using raw address^M
Tracepoint 1 at 0x10012358^M
Created tracepoint 1 for target's tracepoint 1 at 0x10012358.^M
(gdb) PASS: gdb.trace/tfile.exp: target tfile tfile-basic.tf
info trace^M
Num Type Disp Enb Address What^M
1 tracepoint keep y 0x0000000010012358 <write_basic_trace_file>^M
installed on target^M
(gdb) FAIL: gdb.trace/tfile.exp: info tracepoints on trace file
-target-select tfile tfile-basic.tf^M
=thread-group-started,id="i1",pid="1"^M
=thread-created,id="1",group-id="i1"^M
&"warning: Uploaded tracepoint 1 has no source location, using raw address\n"^M
=breakpoint-created,bkpt={number="1",type="tracepoint",disp="keep",enabled="y",
addr="0x0000000010012358",at="<write_basic_trace_file>",thread-groups=["i1"],
times="0",installed="y",original-location="*0x10012358"}^M
~"Created tracepoint 1 for target's tracepoint 1 at 0x10012358.\n"^M
^connected^M
(gdb) ^M
FAIL: gdb.trace/mi-traceframe-changed.exp: tfile: select trace file
These fails are caused by writing function descriptor address into trace
file instead of function address. This patch is to teach tfile.c to
write function address on powerpc64 target. With this patch applied,
fails in tfile.exp and mi-traceframe-changed.exp are fixed. Is it
OK?
gdb/testsuite:
2014-10-27 Yao Qi <yao@codesourcery.com>
* gdb.trace/tfile.c (adjust_function_address)
[__powerpc64__ && _CALL_ELF != 2]: Get function address from
function descriptor.
commit 71e396f920e593494b8d57114d32e2c07f823781
Author: Luis Machado <lgustavo@codesourcery.com>
Date: Mon Oct 27 08:57:58 2014 -0200
Fix ARM machine state testcase failures
When running GDB's reverse debugging testsuite against a few ARM
multilibs, i noticed failures in the machinestate* testcases.
Further investigation showed that push and pop instruction encodings
A1 and A2 were not being handled properly, thus we missed saving
important contents from registers and memory. When going backwards,
such contents were not restored and thus we ended up with a corrupted
state that did not correspond to the real values we had at a
particular point in time.
Attached is a patch that fixes around 36 failures for both
gdb.reverse/machinestate.exp and
gdb.reverse/machinestate-precsave.exp testcases, making them fully
pass. This is for both armv7 and armv4. I still see failures for
armv4 thumb though, so it needs a bit more investigation.
I see no regressions due to this patch for armv7, armv7 thumb, armv4
and armv4 thumb.
gdb/ChangeLog:
* arm-tdep.c (INSN_S_L_BIT_NUM): Document.
(arm_record_ld_st_imm_offset): Reimplement to cover all
load/store cases for ARM opcode 010.
(arm_record_ld_st_multiple): Reimplement to cover all
load/store cases for ARM opcode 100.
commit 3aee438bbb1634e6e6e3ae60fe8479ae7172b014
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 16:46:52 2014 -0700
symtab.c (lookup_symbol_aux_local): Fix typo in comment.
gdb/ChangeLog:
* symtab.c (lookup_symbol_aux_local): Fix typo in comment.
commit 4744af9bf6a84c89f2e3987e40dd533651f2e731
Author: Alan Modra <amodra@gmail.com>
Date: Mon Oct 27 09:30:40 2014 +1030
daily update
commit f88cb4b683ffe4722fcee751c2b046ceb807deed
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 13:53:58 2014 -0700
Rename parameter "kind" to "block_index" in quick lookup functions.
gdb/ChangeLog:
* symfile.h (struct quick_symbol_functions) <lookup_symbol>: Rename
parameter "kind" to "block_index".
* symtab.c (error_in_psymtab_expansion): Rename parameter "kind" to
"block_index".
(lookup_symbol_aux_quick, basic_lookup_transparent_type_quick): Ditto.
commit a023a30fb494294f739b3414a28d11da8c298d3f
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 12:26:20 2014 -0700
* block.h (ALL_BLOCK_SYMBOLS): Fix comment.
gdb/ChangeLog:
* block.h (ALL_BLOCK_SYMBOLS): Fix comment.
commit 4c35218eab6ed3b4c5ddd454809820f09030480f
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 11:36:59 2014 -0700
block.c (allocate_block): Use OBSTACK_ZALLOC instead of obstack_alloc.
gdb/ChangeLog:
* block.c (allocate_block): Use OBSTACK_ZALLOC instead of
obstack_alloc.
commit f08e8df3ab2f98b68c6cba6dc9ff5ae2ff3ecb6c
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 10:42:26 2014 -0700
Move block_found decl to symtab.h.
gdb/ChangeLog:
* parser-defs.h (block_found): Move decl from here ...
* symtab.h (block_found): ... to here.
commit cf901d3bbac471a581776dbe88dd838d96a894c0
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 26 09:35:53 2014 -0700
Clean up some function comments in symtab.[ch].
gdb/ChangeLog:
* symtab.h (struct field_of_this_result): Fix typo in comment.
(lookup_symbol_in_language): Move function comment here.
(lookup_symbol): Improve function comment.
(basic_lookup_symbol_nonlocal): Ditto.
(lookup_symbol_static, lookup_symbol_global): Ditto.
(lookup_symbol_aux_block): Ditto.
(lookup_language_this): Add function comment.
(lookup_static_symbol_aux): Explicitly mark as extern. Improve
function comment.
(lookup_block_symbol): Improve function comment.
(lookup_struct): Fix capitalization in function comment.
(lookup_transparent_type): Add function comment.
(lookup_global_symbol_from_objfile): Explicitly mark as extern.
Improve function comment.
(lookup_objfile_from_block): Add function comment.
* symtab.c (lookup_symbol_in_language): Update function comment.
(lookup_symbol, lookup_language_this): Ditto.
(lookup_static_symbol_aux, lookup_objfile_from_block): Ditto.
(lookup_symbol_aux_block, lookup_global_symbol_from_objfile): Ditto.
(basic_lookup_symbol_nonlocal): Ditto.
(lookup_symbol_static, lookup_symbol_global): Ditto.
(lookup_transparent_type, lookup_block_symbol): Ditto.
commit ff6c39cf9cea7cdb925557493408808da2bf6e15
Author: Doug Evans <xdje42@gmail.com>
Date: Sat Oct 25 22:22:47 2014 -0700
symtab.c: forward decl cleanup
gdb/ChangeLog:
* symtab.c (types_info): Delete forward decl.
(functions_info, variables_info, sources_info): Ditto.
(_initialize_symtab): Rewrite forward decl to use
initialize_file_ftype.
commit ec201f0cd1e6a0804822981fd7e25c99a3b39fd0
Author: Doug Evans <xdje42@gmail.com>
Date: Sat Oct 25 22:07:54 2014 -0700
symtab.c (lookup_symbol_aux_quick): Set block_found upon success.
gdb/ChangeLog:
* symtab.c (lookup_symbol_aux_quick): Set block_found upon success.
commit ca040673e070391c8e5c35a12ef6b33fe03128ad
Author: Doug Evans <xdje42@gmail.com>
Date: Sat Oct 25 21:46:00 2014 -0700
Remove second (nested) copy of local var child_die.
gdb/ChangeLog:
* dwarf2read.c (process_structure_scope): Remove second (nested) copy
of local var child_die.
commit 9667818c4eba346667b7dbc772a07ed10e8b5629
Author: Alan Modra <amodra@gmail.com>
Date: Sun Oct 26 09:30:31 2014 +1030
daily update
commit f5627833b4c2c11cee56f2556128ae03fa00a031
Author: Alan Modra <amodra@gmail.com>
Date: Sat Oct 25 09:31:03 2014 +1030
daily update
commit 6f259a235d01fe7b98c8ad6e8edc06d72074a14a
Author: Don Breazeal <donb@codesourcery.com>
Date: Fri Oct 24 11:36:06 2014 -0700
Follow-fork message printing improvements
This commit modifies the code that prints attach and detach messages
related to following fork and vfork. The changes include using
target_terminal_ours_for_output instead of target_terminal_ours,
printing "vfork" instead of "fork" for all vfork-related messages,
and using _() for the format strings of all of the messages.
We also add a "detach" message for when a fork parent is detached.
Previously in this case the only message was notification of attaching
to the child. We still do not print any messages when following the
parent and detaching the child (the default). The rationale for this
is that from the user's perspective the new child was never attached.
Note that all of these messages are only printed when 'verbose' is set
or when debugging is turned on.
The tests gdb.base/foll-fork.exp and gdb.base/foll-vfork.exp were
modified to check for the new message.
Tested on x64 Ubuntu Lucid, native only.
gdb/ChangeLog:
* infrun.c (follow_fork_inferior): Update fork message printing
to use target_terminal_ours_for_output instead of
target_terminal_ours, to use _() for all format strings, to print
"vfork" instead of "fork" for vforks, and to add a detach message.
(handle_vfork_child_exec_or_exit): Update message printing to use
target_terminal_ours_for_output instead of target_terminal_ours, to
use _() for all format strings, and to fix some formatting.
gdb/testsuite/ChangeLog:
* gdb.base/foll-fork.exp (test_follow_fork,
catch_fork_child_follow): Check for updated fork messages emitted
from infrun.c.
* gdb.base/foll-vfork.exp (vfork_parent_follow_through_step,
vfork_parent_follow_to_bp, vfork_and_exec_child_follow_to_main_bp,
vfork_and_exec_child_follow_through_step): Check for updated vfork
messages emitted from infrun.c.
commit 09dd9a6907f0929f2b634e57e68f11a008dfbf68
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 14:49:04 2014 +0100
Remove Vax Ultrix and VAX BSD support
Built and tested on x86_64 Fedora 20, with --enable-targets=all.
gdb/
2014-10-24 Pedro Alves <palves@redhat.com>
* Makefile.in (ALLDEPFILES): Remove vax-nat.c.
* NEWS (Removed targets): Add VAX BSD and VAX Ultrix.
* config/vax/vax.mh: Delete.
* configure.host: Move vax-*-bsd* and vax-*-ultrix* to the
obsolete configurations section.
* configure.tgt (vax-*-*): Don't mention 4.2BSD nor Ultrix.
* vax-nat.c: Delete file.
gdb/testsuite/
2014-10-24 Pedro Alves <palves@redhat.com>
* gdb.base/corefile.exp: Remove references to ultrix.
* gdb.base/interrupt.exp: Likewise.
* gdb.base/whatis.exp: Likewise.
* gdb.gdb/selftest.exp: Likewise.
* gdb.threads/manythreads.exp: Likewise.
* gdb.threads/print-threads.exp: Likewise.
* gdb.threads/pthreads.exp:: Likewise.
* gdb.threads/schedlock.exp: Likewise.
commit 5ab806deff413e90bb2dc988b78857e13dfc1b5b
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 24 17:56:29 2014 +0100
NEWS: Clarify removed targets
gdb/
2014-10-24 Pedro Alves <palves@redhat.com>
* NEWS (Removed targets): Add OS/arch column.
commit 3433cfa51f6397231ffe2b2c69298eff89179769
Author: Siva Chandra <sivachandra@chromium.org>
Date: Thu Oct 16 07:14:13 2014 -0700
Guard a call to TYPE_TARGET_TYPE in gnuv3_pass_by_reference.
gdb/ChangeLog:
* gnu-v3-abi.c (gnuv3_pass_by_reference): Call TYPE_TARGET_TYPE
on the arg type of a constructor only if it is of reference type.
gdb/testsuite/ChangeLog:
* gdb.cp/non-trivial-retval.cc: Add a test case.
* gdb.cp/non-trivial-retval.exp: Add a test.
commit 68fcca92b735bb46e38331485ac2e933e5876b83
Author: Jiong Wang <jiong.wang@arm.com>
Date: Fri Oct 24 11:39:35 2014 +0100
[AArch64] Cortex-A53 erratum 835769 linker workaround
2014-10-22 Tejas Belagod <tejas.belagod@arm.com>
bfd/
* bfd-in.h (bfd_elf64_aarch64_set_options): Add a parameter.
* bfd-in2.h (bfd_elf64_aarch64_set_options): Likewise.
* elfnn-aarch64.c (aarch64_erratum_835769_stub): New.
(elf_aarch64_stub_type): Add new type
aarch64_stub_erratum_835769_veneer.
(elf_aarch64_stub_hash_entry): New fields for erratum 835769.
(aarch64_erratum_835769_fix): New data struct to record erratum
835769.
(elf_aarch64_link_hash_table: Global flags for 835769.
(aarch64_build_one_stub): Add case for 835769.
(aarch64_size_one_stub): Likewise.
(aarch64_mem_op_p, aarch64_mlxl_p,
aarch64_erratum_sequence,erratum_835769_scan):
New. Decode and scan functions for erratum 835769.
(elf_aarch64_create_or_find_stub_sec): New.
(elfNN_aarch64_size_stubs): Look for erratum 835769 and record
them.
(bfd_elfNN_aarch64_set_options: Set global flag for 835769.
(erratum_835769_branch_to_stub_data,
make_branch_to_erratum_835769_stub):New. Connect up all the
erratum stubs to occurances by branches.
(elfNN_aarch64_write_section): New hook.
(aarch64_map_one_stub): Output erratum stub symbol.
(elfNN_aarch64_size_dynamic_sections): Init mapping symbol
information for erratum 835769.
(elf_backend_write_section): Define.
ld/
* emultempl/aarch64elf.em: Add command-line option for erratum
835769.
ld/testsuite/
* ld-aarch64/aarch64-elf.exp (aarch64elftests): Drive erratum
835769 tests.
* ld-aarch64/erratum835769.d: New.
* ld-aarch64/erratum835769.s: New.
commit 79ccd89e582a1159a503813be020d044e070d53f
Author: Alan Modra <amodra@gmail.com>
Date: Fri Oct 24 09:30:51 2014 +1030
daily update
commit 96ba42336f634f8095ae04abd7cb1cbdab226d24
Author: Sandra Loosemore <sandra@codesourcery.com>
Date: Thu Oct 23 09:54:15 2014 -0700
Refactoring/cleanup of nios2 opcodes and assembler code.
2014-10-23 Sandra Loosemore <sandra@codesourcery.com>
include/opcode/
* nios2.h (enum iw_format_type): New.
(struct nios2_opcode): Update comments. Add size and format fields.
(NIOS2_INSN_OPTARG): New.
(REG_NORMAL, REG_CONTROL, REG_COPROCESSOR): New.
(struct nios2_reg): Add regtype field.
(GET_INSN_FIELD, SET_INSN_FIELD): Delete.
(IW_A_LSB, IW_A_MSB, IW_A_SZ, IW_A_MASK): Delete.
(IW_B_LSB, IW_B_MSB, IW_B_SZ, IW_B_MASK): Delete.
(IW_C_LSB, IW_C_MSB, IW_C_SZ, IW_C_MASK): Delete.
(IW_IMM16_LSB, IW_IMM16_MSB, IW_IMM16_SZ, IW_IMM16_MASK): Delete.
(IW_IMM26_LSB, IW_IMM26_MSB, IW_IMM26_SZ, IW_IMM26_MASK): Delete.
(IW_OP_LSB, IW_OP_MSB, IW_OP_SZ, IW_OP_MASK): Delete.
(IW_OPX_LSB, IW_OPX_MSB, IW_OPX_SZ, IW_OPX_MASK): Delete.
(IW_SHIFT_IMM5_LSB, IW_SHIFT_IMM5_MSB): Delete.
(IW_SHIFT_IMM5_SZ, IW_SHIFT_IMM5_MASK): Delete.
(IW_CONTROL_REGNUM_LSB, IW_CONTROL_REGNUM_MSB): Delete.
(IW_CONTROL_REGNUM_SZ, IW_CONTROL_REGNUM_MASK): Delete.
(OP_MASK_OP, OP_SH_OP): Delete.
(OP_MASK_IOP, OP_SH_IOP): Delete.
(OP_MASK_IRD, OP_SH_IRD): Delete.
(OP_MASK_IRT, OP_SH_IRT): Delete.
(OP_MASK_IRS, OP_SH_IRS): Delete.
(OP_MASK_ROP, OP_SH_ROP): Delete.
(OP_MASK_RRD, OP_SH_RRD): Delete.
(OP_MASK_RRT, OP_SH_RRT): Delete.
(OP_MASK_RRS, OP_SH_RRS): Delete.
(OP_MASK_JOP, OP_SH_JOP): Delete.
(OP_MASK_IMM26, OP_SH_IMM26): Delete.
(OP_MASK_RCTL, OP_SH_RCTL): Delete.
(OP_MASK_IMM5, OP_SH_IMM5): Delete.
(OP_MASK_CACHE_OPX, OP_SH_CACHE_OPX): Delete.
(OP_MASK_CACHE_RRS, OP_SH_CACHE_RRS): Delete.
(OP_MASK_CUSTOM_A, OP_SH_CUSTOM_A): Delete.
(OP_MASK_CUSTOM_B, OP_SH_CUSTOM_B): Delete.
(OP_MASK_CUSTOM_C, OP_SH_CUSTOM_C): Delete.
(OP_MASK_CUSTOM_N, OP_SH_CUSTOM_N): Delete.
(OP_<insn>, OPX_<insn>, OP_MATCH_<insn>, OPX_MATCH_<insn>): Delete.
(OP_MASK_<insn>, OP_MASK): Delete.
(GET_IW_A, GET_IW_B, GET_IW_C, GET_IW_CONTROL_REGNUM): Delete.
(GET_IW_IMM16, GET_IW_IMM26, GET_IW_OP, GET_IW_OPX): Delete.
Include nios2r1.h to define new instruction opcode constants
and accessors.
(nios2_builtin_opcodes): Rename to nios2_r1_opcodes.
(bfd_nios2_num_builtin_opcodes): Rename to nios2_num_r1_opcodes.
(bfd_nios2_num_opcodes): Rename to nios2_num_opcodes.
(NUMOPCODES, NUMREGISTERS): Delete.
* nios2r1.h: New file.
opcodes/
* nios2-opc.c (nios2_builtin_regs): Add regtype field initializers.
(nios2_builtin_opcodes): Rename to nios2_r1_opcodes. Use new
MATCH_R1_<insn> and MASK_R1_<insn> macros in initializers. Add
size and format initializers. Merge 'b' arguments into 'j'.
(NIOS2_NUM_OPCODES): Adjust definition.
(bfd_nios2_num_builtin_opcodes): Rename to nios2_num_r1_opcodes.
(nios2_opcodes): Adjust.
(bfd_nios2_num_opcodes): Rename to nios2_num_opcodes.
* nios2-dis.c (INSNLEN): Update comment.
(nios2_hash_init, nios2_hash): Delete.
(OPCODE_HASH_SIZE): New.
(nios2_r1_extract_opcode): New.
(nios2_disassembler_state): New.
(nios2_r1_disassembler_state): New.
(nios2_init_opcode_hash): Add state parameter. Adjust to use it.
(nios2_find_opcode_hash): Use state object.
(bad_opcode): New.
(nios2_print_insn_arg): Add op parameter. Use it to access
format. Remove 'b' case.
(nios2_disassemble): Remove special case for nop. Remove
hard-coded instruction size.
gas/
* config/tc-nios2.c (nios2_insn_infoS): Add constant_bits field.
(nios2_arg_infoS, nios2_arg_hash, nios2_arg_lookup): Delete.
(nios2_control_register_arg_p): Delete.
(nios2_coproc_reg): Delete.
(nios2_relax_frag): Remove hard-coded instruction size.
(md_convert_frag): Use new insn accessor macros.
(nios2_diagnose_overflow): Remove hard-coded instruction size.
(md_apply_fix): Likewise.
(bad_opcode): New.
(nios2_parse_reg): New.
(nios2_assemble_expression): Remove prev_reloc parameter. Adjust
uses and callers.
(nios2_assemble_arg_c): New.
(nios2_assemble_arg_d): New.
(nios2_assemble_arg_s): New.
(nios2_assemble_arg_t): New.
(nios2_assemble_arg_i): New.
(nios2_assemble_arg_u): New.
(nios2_assemble_arg_o): New.
(nios2_assemble_arg_j): New.
(nios2_assemble_arg_l): New.
(nios2_assemble_arg_m): New.
(nios2_assemble_args): New.
(nios2_assemble_args_dst): Delete.
(nios2_assemble_args_tsi): Delete.
(nios2_assemble_args_tsu): Delete.
(nios2_assemble_args_sto): Delete.
(nios2_assemble_args_o): Delete.
(nios2_assemble_args_is): Delete.
(nios2_assemble_args_m): Delete.
(nios2_assemble_args_s): Delete.
(nios2_assemble_args_tis): Delete.
(nios2_assemble_args_dc): Delete.
(nios2_assemble_args_cs): Delete.
(nios2_assemble_args_ds): Delete.
(nios2_assemble_args_ldst): Delete.
(nios2_assemble_args_none): Delete.
(nios2_assemble_args_dsj): Delete.
(nios2_assemble_args_d): Delete.
(nios2_assemble_args_b): Delete.
(nios2_arg_info_structs): Delete.
(NIOS2_NUM_ARGS): Delete.
(nios2_consume_arg): Remove insn parameter. Use new macros.
Don't check register arguments here. Remove 'b' case.
(nios2_consume_separator): Move check for missing separators to...
(nios2_parse_args): ...here. Remove special case for optional
arguments.
(output_insn): Avoid using hard-coded insn size.
(output_ubranch): Likewise.
(output_cbranch): Likewise.
(output_call): Use new macros.
(output_addi): Likewise.
(output_ori): Likewise.
(output_xori): Likewise.
(output_movia): Likewise.
(md_begin): Remove nios2_arg_info_structs initialization.
(md_assemble): Initialize constant_bits field. Use
nios2_parse_args instead of looking up parse function in hash table.
gdb/
* nios2-tdep.c (nios2_analyze_prologue): Use new instruction field
accessors and constants from nios2 opcodes update.
(nios2_get_next_pc): Likewise.
commit 685e70ae51e312f7cbcfa8943fffceb540d46640
Author: Victor Kamensky <victor.kamensky@linaro.org>
Date: Thu Oct 23 11:53:53 2014 +1030
ARM: plt_size functions need to read instructions in right byte order
elf32_arm_plt0_size and elf32_arm_plt_size read instructions
to determine what is size of PLT entry. However it does not
read instruction correctly in case of ARM big endian V7 case.
In this case instructions are still kept in little endian
order (BE8).
* elf32-arm.c (read_code32): New function to read 32 bit
arm instruction.
(read_code16): New function to read 16 bit thumb instrution.
(elf32_arm_plt0_size, elf32_arm_plt_size): Use read_code32
and read_code16 to read instructions.
commit 65e84d12a068d72c94e96a569dac915386494e7a
Author: Alan Modra <amodra@gmail.com>
Date: Thu Oct 23 09:30:53 2014 +1030
daily update
commit f179c51249f2a34eaba50f64152a257513aabcf8
Author: Matthew Fortune <matthew.fortune@imgtec.com>
Date: Tue Oct 21 11:58:19 2014 +0100
MIPS Documentation fixes
gas/
* doc/as.texinfo: Update the MIPS FP ABI descriptions.
* doc/c-mips.texi: Spell check and correct throughout.
commit 00ac7aa072c90d95615bd1c89c699f0ea5eeae22
Author: Matthew Fortune <matthew.fortune@imgtec.com>
Date: Fri Oct 17 11:07:17 2014 +0100
Show information about unknown ASEs and extensions in .MIPS.abiflags
bfd/
* elfxx-mips.c (print_mips_ases): Print unknown ASEs.
(print_mips_isa_ext): Print the value of an unknown extension.
binutils/
* readelf.c (print_mips_ases): Print unknown ASEs.
(print_mips_isa_ext): Print the value of an unknown extension.
include/
* elf/mips.h (AFL_ASE_MASK): Define.
commit 60822996412bf596f4f786492b0d787ff82417ec
Author: Alan Modra <amodra@gmail.com>
Date: Wed Oct 22 09:30:32 2014 +1030
daily update
commit 7bb01e2d7401f2eb8995d445917708209d3ad4bf
Author: Maciej W. Rozycki <macro@codesourcery.com>
Date: Tue Oct 21 23:06:23 2014 +0100
MIPS/GAS: Correct file option settings with `.insn'
This makes sure `HAVE_CODE_COMPRESSION' evaluates correctly when the
`.insn' directive is used at the beginning of a source file before any
instructions have been produced and that ELF file header's MIPS16 and
microMIPS ASE flags are set correctly in the case where no instructions
have been produced other than with the said directive.
gas/
* config/tc-mips.c (s_insn): Set file options.
gas/testsuite/
* gas/mips/insn-opts.d: New test.
* gas/mips/insn-opts.s: New test source.
* gas/mips/mips.exp: Run the new test.
commit 80272b8cb9f78cd97c4655019e7826b6d4c5dd41
Author: Alan Modra <amodra@gmail.com>
Date: Wed Oct 22 08:08:30 2014 +1030
[GOLD] Add gcc-4.9 libgomp symbols requiring --plt-thread-safe for power7
As for bfd.ld. Refer 2300b5a14
* powerpc.cc (do_relax): Add gcc-4.9 libgomp functions to
thread_starter.
commit 55fbd9927b9b6f1f4881cf8585c35029ff4ee153
Author: Andrew Pinski <apinski@cavium.com>
Date: Mon Oct 20 11:39:49 2014 -0700
[AARCH64] Add thunderx support to gas
This patch adds -mcpu=thunderx support to gas.
OK? Tested with no regressions.
ChangeLog:
* config/tc-aarch64.c (aarch64_cpus):
Add thunderx.
* doc/c-aarch64.texi: Document that thunderx
is a valid processor name.
commit 73242275062071346a7c377aca5e704679f25f82
Author: Alan Modra <amodra@gmail.com>
Date: Tue Oct 21 20:44:38 2014 +1030
Relax ppc64_elf_tls_optimize assertion
The code in ppc64_elf_tls_optimize looking at the .toc is only
interested in .toc entries that are addresses. .toc can contain more
than just an array of addresses, so if we have items that aren't
8-byte aligned, ignore them.
* elf64-ppc.c (ppc64_elf_tls_optimize): Ignore relocs against toc
entries that aren't a multiple of 8 rather than failing assertion.
commit e74211b660791d29be21e11766c5b375f5df59b1
Author: Jan Beulich <jbeulich@novell.com>
Date: Tue Oct 21 09:57:41 2014 +0200
gas: avoid bogus warnings in false branches of conditional
The construct being added to the cond.s test case otherwise triggered
both the "missing closing ..." and the "stray ..." (twice) warnings in
_find_end_of_line(). As that code fragments suggests, this is needed to
support (include) files that can be used for both assembler .include
and compiler #include directives.
commit 12e87fac5c760b04eed4f5a5948c2dfd6ec8f6d8
Author: Jan Beulich <jbeulich@novell.com>
Date: Tue Oct 21 09:56:38 2014 +0200
ppc: enable msgclr and msgsnd on Power8
According to my reading of the spec it was an oversight for them to
not having got enabled when Power8 support got added.
commit 28f013d5cb2b60882c73f10eedb26fa5b3b15b2f
Author: Jan Beulich <jbeulich@novell.com>
Date: Tue Oct 21 09:53:25 2014 +0200
aarch64: move bogus assertion
Asserting "idx" to be non-negative when subsequent code handles this
case is bogus. In fact the assertion triggers e.g. when mistakenly
using the arm32 comment character @ following an instruction.
While doing this I also noticed that despite there being local
variables "detail" and "idx", not all places where they could be used
did actually make use of them, so this is being adjusted at once.
Finally, for the code to be slightly more robust, also change
comparisons against -1 to such checking for a (non-)negative value.
commit 2300b5a1414ecb820aa042a30a08928cfcba620b
Author: Alan Modra <amodra@gmail.com>
Date: Tue Oct 21 17:06:01 2014 +1030
Add gcc-4.9 libgomp symbols requiring --plt-thread-safe for power7
powerpc64 ld builds plt call stubs with a read barrier to provide
thread safety on lazy plt updates, necessary on multi-threaded apps
with power7 or later weakly ordered memory. gcc-4.9 libgomp
introduced more functions that could call pthread_create, which means
we have more functions that if referenced in an executable should
cause a default of --plt-thread-safe.
* elf64-ppc.c (ppc64_elf_size_stubs): Add gcc-4.9 libgomp functions
to thread_starter.
commit 5c0ac14e47ac99bd6ef80a3eb04e80806f07cf58
Author: Alan Modra <amodra@gmail.com>
Date: Tue Oct 21 09:30:53 2014 +1030
daily update
commit fab3a15dfb4255e9d5a79536518ccdbed4e66e23
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Mon Oct 20 13:29:36 2014 -0400
Small fixes to the Python API doc
First:
"Breakpoint.delete" is missing parenthesis.
Second:
Someone on IRC asked, how come there is no disable() method in the
Breakpoint object. It turns out you have to do "bp.enabled = False".
Since every normal person would probably search for "disable" in that page
if their intent is to disable a python breakpoint, I thought it would be
useful if the description contained "disable" so it would be easy to find.
The result might seem a bit silly and redundant, so I am open to
suggestions.
gdb/doc/ChangeLog:
* python.texi (Breakpoints In Python): Add parenthesis after
Breakpoint.delete. Clarify Breakpoint.enabled description so
that it contains "disable".
commit 092f880b8e4cacee96e85a885c206e8879e86fec
Author: Yao Qi <yao@codesourcery.com>
Date: Mon Sep 29 21:37:32 2014 +0800
Rename py-objfile-script-gdb.py.in to py-objfile-script-gdb.py
Patch <https://sourceware.org/ml/gdb-patches/2011-07/msg00225.html> was
to fix the problem that py-objfile-script-gdb.py is removed after an
in-tree build and test. As a result of the previous patch (we don't
remove files copied to host any more), this patch is no longer needed.
This patch is to revert it logically.
gdb/testsuite:
2014-10-20 Yao Qi <yao@codesourcery.com>
* gdb.python/py-objfile-script-gdb.py.in: Rename it to ...
* gdb.python/py-objfile-script-gdb.py: New file.
* gdb.python/py-objfile-script.exp: Update reference to
py-objfile-script-gdb.py.in. Use gdb_remote_donwload instead
of remote_download. Remove the dest file.
commit acbdb7f355f9dfa851dcff3154944a0d96771b0e
Author: Yao Qi <yao@codesourcery.com>
Date: Mon Sep 29 20:47:30 2014 +0800
Don't remove files copied to host
Nowadays, if we do in-tree build and run tests sequentially, some source
files are removed, due to the following pattern:
set pi_txt [gdb_remote_download host ${srcdir}/${subdir}/pi.txt]
remote_exec host "rm -f $pi_txt"
If testing is run sequentially, file ${srcdir}/${subdir}/pi.txt is
copied to ${objdir}/${subdir}/pi.txt. However, ${objdir} is ${srcdir}
in the in-tree build/test, so the file is coped to itself, as a nop.
As a result, the file in source is removed at the end of test.
This patch fixes this problem by not removing files copied to host in
each test. This patch also addresses the question we've had that why
don't we keep files copied to host because they are needed to reproduce
certain fails.
gdb/testsuite:
2014-10-20 Yao Qi <yao@codesourcery.com>
* gdb.base/checkpoint.exp: Don't remove file copied on host.
* gdb.base/step-line.exp: Likewise.
* gdb.dwarf2/dw2-anonymous-func.exp: Likewise.
* gdb.dwarf2/dw2-basic.exp: Likewise.
* gdb.dwarf2/dw2-compressed.exp: Likewise.
* gdb.dwarf2/dw2-filename.exp: Likewise.
* gdb.dwarf2/dw2-intercu.exp: Likewise.
* gdb.dwarf2/dw2-intermix.exp: Likewise.
* gdb.dwarf2/dw2-producer.exp: Likewise.
* gdb.dwarf2/mac-fileno.exp: Likewise.
* gdb.python/py-frame-args.exp: Likewise.
* gdb.python/py-framefilter.exp: Likewise.
* gdb.python/py-mi.exp: Likewise.
* gdb.python/py-objfile-script.exp: Likewise
* gdb.python/py-pp-integral.exp: Likewise.
* gdb.python/py-pp-re-notag.exp: Likewise.
* gdb.python/py-prettyprint.exp: Likewise.
* gdb.python/py-section-script.exp: Likewise.
* gdb.python/py-typeprint.exp: Likewise.
* gdb.python/py-xmethods.exp: Likewise.
* gdb.stabs/weird.exp: Likewise.
* gdb.xml/tdesc-regs.exp: Likewise.
commit c6ecbe44d87c71dc97f5d305c47cc3f7d4510e57
Author: Alan Modra <amodra@gmail.com>
Date: Mon Oct 20 09:30:41 2014 +1030
daily update
commit 28153fd32137e4f1f081f3477c5b76e0bb387f44
Author: Doug Evans <xdje42@gmail.com>
Date: Sun Oct 19 13:36:54 2014 -0700
Fix some comments to say minus_one_ptid instead of PID == -1.
gdb/ChangeLog:
* gdbthread.h (set_running): Fix comment.
(set_executing, finish_thread_state): Fix comment.
commit fc9b8e475d13b13e6cac1441aef649ce45929111
Author: Doug Evans <xdje42@gmail.com>
Date: Sat Oct 18 21:24:47 2014 -0700
linux-nat.c (linux_nat_wait_1): Make local prev_mask non-static.
gdb/ChangeLog:
linux-nat.c (linux_nat_wait_1): Make local prev_mask non-static.
commit 5bb926bae5e049e61d409fc5a0985082c9997eab
Author: Alan Modra <amodra@gmail.com>
Date: Sun Oct 19 09:30:47 2014 +1030
daily update
commit bd286a290bbfe7039cf9fe0291ab9b1f20937e52
Author: Kwok Cheung Yeung <kcy@codesourcery.com>
Date: Sat Oct 18 21:45:36 2014 +0100
Fix the gdb.dwarf2/dw2-dir-file-name.exp test on MIPS
This patch fixes the failures that occur with the
gdb.dwarf2/dw2-dir-file-name.exp test on 64-bit MIPS and compressed
MIPS ISAs (i.e. MIPS16 and microMIPS).
The failures on 64-bit occur because the generated DWARF address
information is always 32-bit, which causes the upper 32-bits of
addresses to be truncated and causes breakpoints to be set on the
wrong address if any of the upper 32-bits are non-zero. I suspect
that other 64-bit architectures get away with it because they
place all their instructions at a VMA lower than 2^32 by default.
This patch causes 64-bit addresses to be generated if a 64-bit
target is detected.
The failures on MIPS16 and microMIPS occur because the breakpoint
address needs to have the LSB set to 1 (used to indicate that the
code is compressed). However, the function name is interpreted as
a data label, causing GDB to set breakpoints at even addresses.
This is fixed by explicitly adding a '.insn' directive (see
https://sourceware.org/binutils/docs/as/MIPS-insn.html) after the
label on MIPS only.
gdb/testsuite/
2014-10-18 Kwok Cheung Yeung <kcy@codesourcery.com>
* gdb.dwarf2/dw2-dir-file-name.exp (addr_len): New.
(out_cu): Use addr_len for the size of addresses.
(out_line): Likewise. Size DW_LNE_set_address instruction
according to addr_len.
* gdb.dwarf2/dw2-dir-file-name.c (START_INSNS): New.
(FUNC): Add START_INSNS to definition.
commit 673dc4a0542b54d8da67e53eaaa94ace90085421
Author: Yao Qi <yao@codesourcery.com>
Date: Tue Oct 14 15:40:15 2014 +0800
Skip testing argv[0] on target argv[0] isn't available
I see the following two fails on arm-none-eabi target, because argv[0]
isn't available.
print argv[0]^M
$1 = 0x1f78 "/dev/null"^M
(gdb) FAIL: gdb.base/argv0-symlink.exp: kept file symbolic link name
print argv[0]^M
$1 = 0x1f78 "/dev/null"^M
(gdb) FAIL: gdb.base/argv0-symlink.exp: kept directory symbolic link name
My first thought is to check [target_info exists noargs], and skip the
test if it returns true. However, noargs is set in gdbserver board
files, so argv0-symlink.exp will be skipped on gdbserver board file.
The change is too aggressive.
When the program is running with gdbserver, argv[1] to argv[N] aren't
available, but argv[0] is. Fortunately, argv0-symlink.exp only
requires argv[0]. argv0-symlink.exp can be run with gdbserver board
file, as what we do now.
What we need to check is whether argv[0] is available, so I add a new
proc gdb_has_argv0 to do so by starting a program, and check
argc/argv[0] to see whether argv[0] is available.
Dan fixed the similar problem by checking noargs, which is too strong.
https://sourceware.org/ml/gdb-patches/2010-02/msg00398.html as a
result, the test is skipped on gdbserver. This patch fixed it too.
gdb/testsuite:
2014-10-18 Yao Qi <yao@codesourcery.com>
* gdb.base/argv0-symlink.exp: Check argv[0] value if
gdb_has_argv0 return true.
* gdb.guile/scm-value.exp (test_value_in_inferior): Don't
check [target_info exists noargs], check [gdb_has_argv0]
instead.
* gdb.python/py-value.exp (test_value_in_inferior): Likewise.
* lib/gdb.exp (gdb_has_argv0, gdb_has_argv0_1): New
procedures.
commit b53dfeb26ed06e97fff1e8f469e33637ebdf6624
Author: Alan Modra <amodra@gmail.com>
Date: Sat Oct 18 21:46:48 2014 +1030
PowerPC64 ELFv1 function symbol definition vs LTO and discarded sections
When functions are emitted in comdat groups, global symbols defined in
duplicates of the group are treated as if they were undefined. That
prevents the symbols in the discarded sections from affecting the
linker's global symbol hash table or causing duplicate symbol errors.
Annoyingly, when gcc emits a function to a comdat group, it does not
put *all* of a function's code and data in the comdat group.
Typically, constant tables, exception handling info, and debug info
are emitted to normal sections outside of the group, which is a
perennial source of linker problems due to the special handling needed
to deal with the extra-group pieces that ought to be discarded. In
the case of powerpc64-gcc, the OPD entry for a function is not put in
the group. Since the function symbol is defined on the OPD entry this
means we need to handle symbols in .opd specially.
To see how this affects LTO in particular, consider the linker
testcase PR ld/12942 (1). This testcase links an LTO object file
pr12942a.o with a normal (non-LTO) object pr12942b.o. Both objects
contain a definition for _Z4testv in a comdat group. On loading
pr12942a.o, the linker sees a comdat group (actually linkonce section)
for _Z4testv and a weak _Z4testv defined in the IR. On loading
pr12942b.o, the linker sees the same comdat group, and thus discards
it. However, _Z4testv is a weak symbol defined in .opd, not part of
the group, so this weak symbol overrides the weak IR symbol. On
(re)loading the LTO version of pr12942a.o, the linker sees another
weak _Z4testv, but this one does not override the value we have from
pr12942b.o. The result is a linker complaint about "`_Z4testv'
... defined in discarded section `.group' of tmpdir/pr12942b.o".
* elf64-ppc.c (ppc64_elf_add_symbol_hook): If function code
section for function symbols defined in .opd is discarded, let
the symbol appear to be undefined.
(opd_entry_value): Ensure the result section is that for the
function code section in the same object as the OPD entry.
commit a841bdf5d3bfb9c687f938be7388597db2e461de
Author: Alan Modra <amodra@gmail.com>
Date: Sat Oct 18 11:10:53 2014 +1030
Fix PR17493, attempted output of *GAS `reg' section* symbol
The write.c change is to make gas report an error if reg_section
symbols should leak in future. The tc-i386.c change is the real fix.
Note that the error isn't the most helpful, "redefined symbol cannot
be used on reloc", but I'm not inclined to improve what is really an
internal gas error. reg_section symbols shouldn't leak..
gas/
PR 17493
* write.c (adjust_reloc_syms): Don't allow symbols in reg_section
to be reduced to reg_section section symbol.
* gas/config/tc-i386.c (i386_finalize_immediate): Reject all
reg_section immediates.
gas/testsuite/
* gas/i386/inval-equ-2.l: Adjust.
commit 998a69f46a3770d0f26aec080fcac4865c689739
Author: Andreas Schwab <schwab@linux-m68k.org>
Date: Sat Oct 18 10:30:54 2014 +0200
* configure.tgt (targ_extra_obj) [aarch64*-*]: Define.
commit aed56ec5f279e3849810e19f7d4b7fc0fe6ac528
Author: Cary Coutant <ccoutant@google.com>
Date: Fri Oct 17 16:22:55 2014 -0700
Add "typename" keyword to satisfy GCC 4.2.
gold/
* aarch64.cc (AArch64_relocate_functions::maybe_apply_stub):
Add "typename" keyword.
commit bf97b6dd05d086f6e68854d4861afc1f3f593380
Author: Alan Modra <amodra@gmail.com>
Date: Sat Oct 18 09:30:32 2014 +1030
daily update
commit 0b6be415509b6dc5de80cb4e151b4a7439734b53
Author: Jose E. Marchesi <jose.marchesi@oracle.com>
Date: Wed Oct 15 08:46:54 2014 +0200
opcodes, elf: annotate instructions with HWCAP2_VIS3B.
This patch annotates the following SPARC instructions as VIS3B
instructions: ldx *, %efsr, fpadd64, fpsub64, fpcmpule8, fpcmpune8,
fpcmpugt8, fpcmpueq8. It also improves the documentation of the VIS3B
capability in several headers.
Tested in sparc64-unknown-linux-gnu and sparc-unknown-linux-gnu.
No visible regressions.
opcodes/ChangeLog:
2014-10-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc-opc.c (sparc-opcodes): Annotate several instructions with
the HWCAP2_VIS3B hwcap.
include/opcodes/ChangeLog:
2014-10-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc.h (HWCAP2_VIS3B): Documentation improved.
include/elf/ChangeLog:
2014-10-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc.h (ELF_SPARC_HWCAP2_VIS3B): Documentation improved.
commit d9490cd487215bb3cd28b4235efbb97fed840197
Author: Jose E. Marchesi <jose.marchesi@oracle.com>
Date: Fri Oct 17 21:56:41 2014 +0200
opcodes: fix several misplaced hwcap entries.
This patch fixes the hwcap entries in `sparc-opcodes' (which were
incorrectly located in the flags field) for the following
instructions:
wr r,r,%sys_tick
wr r,i,%sys_tick
wr r,r,%sys_tick_cmpr
wr r,i,%sys_tick_cmpr
edge8n edge8ln edge16n edge16ln edge32n edge32ln
bmask bshuffle siam
Tested in sparc-unknown-linux-gnu and sparc64-unknown-linux-gnu.
No visible regressions.
opcodes/ChangeLog:
2014-10-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc-opc.c (sparc-opcodes): Fix several misplaced hwcap
entries.
commit 8bd978587880bff236f2b3c20df703c88899be5f
Author: Matthew Fortune <matthew.fortune@imgtec.com>
Date: Fri Oct 17 20:25:09 2014 +0100
Fix bad @value references in MIPS documentation
gas/
* doc/c-mips.texi: Fix bad @value references.
commit 4ffbba72f39aa4a8c6833618b9fd552df33ca69a
Author: Doug Evans <dje@google.com>
Date: Fri Oct 17 11:12:17 2014 -0700
New python event "clear_objfiles".
If one is watching new_objfile events in python, it helps to know
when the list of objfiles is cleared. This patch adds a new
clear_objfiles event to support this.
This patch is all just cut-n-paste-n-tweak derived from
the new_objfiles event.
gdb/ChangeLog:
* NEWS: Mention new event gdb.clear_objfiles.
* python/py-event.h (emit_clear_objfiles_event): Clear
* python/py-events.h (events_object): New member clear_objfiles.
* python/py-evts.c (gdbpy_initialize_py_events): Add clear_objfiles
event.
* python/py-inferior.c (python_new_objfile): If objfile is NULL,
emit clear_objfiles event.
* python/py-newobjfileevent.c (create_clear_objfiles_event_object): New
function.
(emit_clear_objfiles_event): New function.
(clear_objfiles): New event.
* python/python-internal.h (gdbpy_initialize_clear_objfiles_event):
Declare.
* python/python.c (_initialize_python): Call
gdbpy_initialize_clear_objfiles_event.
gdb/doc/ChangeLog:
* python.texi (Events In Python): Document clear_objfiles event.
gdb/testsuite/ChangeLog:
* gdb.python/py-events.exp: Update expected output for clear_objfiles
event.
* gdb.python/py-events.py: Add clear_objfiles event.
commit d096d8c11e4ab306d45e8dca811db2fa33e933a8
Author: Doug Evans <dje@google.com>
Date: Fri Oct 17 10:57:26 2014 -0700
Add gdb.Objfile.progspace attribute.
gdb/ChangeLog:
* NEWS: Mention new gdb.Objfile.progspace attribute.
* python/py-objfile.c (objfpy_get_progspace): New function.
(objfile_getset): New entry for "progspace".
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document new progspace attribute.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Test progspace attribute.
commit a80db0157c31d3f0fbb37ea40384b11041429a2f
Author: Luis Machado <lgustavo@codesourcery.com>
Date: Fri Oct 17 11:28:17 2014 -0300
Fix mingw32 failures due to incorrect directory separator in pattern
Some testcases, mostly gdb.reverse ones, assume the presence of a
'/' directory separator before the source file name. This is
incorrect for mingw32 hosts, generating false failures for those
tests.
I attempted to catch most of the occurrences of the pattern
".*/$srcfile" and replaced them with ".*$srcfile". The latter
is used elsewhere in the testsuite. The resulting patch is attached.
I also see other occurrences of the same assumption throughout the
testsuite, but usually they are arguments for function calls and i
seem to recall either the test harness or GDB deals with those
paths properly.
gdb/testsuite:
2014-10-17 Luis Machado <lgustavo@codesourcery.com>
* gdb.guile/scm-breakpoint.exp: Do not assume any
directory separators when matching source file paths.
* gdb.python/py-breakpoint.exp: Likewise.
* gdb.reverse/break-precsave.exp: Likewise.
* gdb.reverse/break-reverse.exp: Likewise.
* gdb.reverse/consecutive-precsave.exp: Likewise.
* gdb.reverse/finish-precsave.exp: Likewise.
* gdb.reverse/finish-reverse-bkpt.exp: Likewise.
* gdb.reverse/finish-reverse.exp: Likewise.
* gdb.reverse/i386-precsave.exp: Likewise.
* gdb.reverse/i387-env-reverse.exp: Likewise.
* gdb.reverse/i387-stack-reverse.exp: Likewise.
* gdb.reverse/machinestate-precsave.exp: Likewise.
* gdb.reverse/machinestate.exp: Likewise.
* gdb.reverse/sigall-precsave.exp: Likewise.
* gdb.reverse/solib-precsave.exp: Likewise.
* gdb.reverse/step-precsave.exp: Likewise.
* gdb.reverse/until-precsave.exp: Likewise.
* gdb.reverse/watch-precsave.exp: Likewise.
* gdb.reverse/watch-reverse.exp: Likewise.
commit b22089abcba7cc3be26a9ab7d60e01299ac13ea0
Author: Yao Qi <yao@codesourcery.com>
Date: Fri Aug 15 11:28:39 2014 +0800
Copy xml files to host
When I run test with board file local-remote-host-native.exp, I see
the following warning,
$ make check RUNTESTFLAGS="--host_board=local-remote-host-native
--target_board=local-remote-host-native tdesc-arch.exp
HOST_DIR=/tmp/foo/"
(gdb) set tdesc filename ../../../../git/gdb/testsuite/gdb.xml/trivial.xml^M
warning: Could not open "../../../../git/gdb/testsuite/gdb.xml/trivial.xml"
(gdb) quit^
because "${srcdir}/gdb.xml/trivial.xml" doesn't exist on host. This
patch is to copy trivial.xml to host and the warning goes away.
(gdb) set tdesc filename /tmp/foo/trivial.xml^M
(gdb) quit^
tdesc-regs.exp has the similar problem that single-reg.xml may not
exist on host at all, and it should be copied to host too.
gdb/testsuite:
2014-10-17 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (gdb_skip_xml_test): Copy trivial.xml to host.
* gdb.xml/tdesc-regs.exp: Copy single-reg.xml to host.
commit 6c4486e63f7583ed85a0c72841f6ccceebbf858e
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 13:31:26 2014 +0100
PR gdb/17471: Repeating a background command makes it foreground
When we repeat a command, by just pressing <ret>, the input from the
previous command is reused for the new command invocation.
When an execution command strips the "&" out of its incoming argument
string, to detect background execution, we poke a '\0' directly to the
incoming argument string.
Combine both, and a repeat of a background command loses the "&".
This is actually only visible if args other than "&" are specified
(e.g., "c 1&" or "next 2&" or "c -a&"), as in the special case of "&"
alone (e.g. "c&") doesn't actually clobber the incoming string.
Fix this by making strip_bg_char return a new string instead of poking
a hole in the input string.
New test included.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17471
* infcmd.c (strip_bg_char): Change prototype and rewrite. Now
returns a copy of the input.
(run_command_1, continue_command, step_1, jump_command)
(signal_command, until_command, advance_command, finish_command)
(attach_command): Adjust and install a cleanup to free the
stripped args.
gdb/testsuite/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17471
* gdb.base/bg-execution-repeat.c: New file.
* gdb.base/bg-execution-repeat.exp: New file.
commit 0ff33695eeedf3c2e8cdec8690ae4a10a66b3389
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 13:31:25 2014 +0100
PR gdb/17300: Input after "c -a" crashes readline/GDB
If all threads in the target were already running when the user does
"c -a", nothing puts the inferior's terminal settings in effect and
removes stdin from the event loop, which we must when running a
foreground command. The result is that user input afterwards crashes
readline/gdb:
(gdb) start
Temporary breakpoint 1 at 0x4005d4: file continue-all-already-running.c, line 23.
Starting program: continue-all-already-running
Temporary breakpoint 1, main () at continue-all-already-running.c:23
23 sleep (10);
(gdb) c -a&
Continuing.
(gdb) c -a
Continuing.
p 1
readline: readline_callback_read_char() called with no handler!
Aborted (core dumped)
$
Backtrace:
Program received signal SIGABRT, Aborted.
0x0000003b36a35877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(top-gdb) p 1
$1 = 1
(top-gdb) bt
#0 0x0000003b36a35877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x0000003b36a36f68 in __GI_abort () at abort.c:89
#2 0x0000000000784aa9 in rl_callback_read_char () at readline/callback.c:116
#3 0x0000000000619181 in rl_callback_read_char_wrapper (client_data=0x0) at gdb/event-top.c:167
#4 0x0000000000619557 in stdin_event_handler (error=0, client_data=0x0) at gdb/event-top.c:373
#5 0x000000000061814a in handle_file_event (data=...) at gdb/event-loop.c:763
#6 0x0000000000617631 in process_event () at gdb/event-loop.c:340
#7 0x00000000006176f8 in gdb_do_one_event () at gdb/event-loop.c:404
#8 0x0000000000617748 in start_event_loop () at gdb/event-loop.c:429
#9 0x00000000006191b3 in cli_command_loop (data=0x0) at gdb/event-top.c:182
#10 0x000000000060f538 in current_interp_command_loop () at gdb/interps.c:318
#11 0x0000000000610701 in captured_command_loop (data=0x0) at gdb/main.c:323
#12 0x000000000060c3f5 in catch_errors (func=0x6106e6 <captured_command_loop>, func_args=0x0, errstring=0x9002c1 "", mask=RETURN_MASK_ALL)
at gdb/exceptions.c:237
#13 0x0000000000611bff in captured_main (data=0x7fffffffd780) at gdb/main.c:1151
#14 0x000000000060c3f5 in catch_errors (func=0x610afe <captured_main>, func_args=0x7fffffffd780, errstring=0x9002c1 "", mask=RETURN_MASK_ALL)
at gdb/exceptions.c:237
#15 0x0000000000611c28 in gdb_main (args=0x7fffffffd780) at gdb/main.c:1159
#16 0x000000000045ef97 in main (argc=5, argv=0x7fffffffd888) at gdb/gdb.c:32
(top-gdb)
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17300
* infcmd.c (continue_1): If continuing all threads in the
foreground, make sure the inferior's terminal settings are put in
effect.
gdb/testsuite/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17300
* gdb.base/continue-all-already-running.c: New file.
* gdb.base/continue-all-already-running.exp: New file.
commit 6fdebc3d1c54d2202f7637e7345fe6d25c7ed93b
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 13:31:25 2014 +0100
PR gdb/17472: With annotations, input while executing in the foreground crashes readline/GDB
Jan caught an intermittent GDB crash with the annota1.exp test:
Starting program: .../gdb/testsuite/gdb.base/annota1 ^M
[...]
FAIL: gdb.base/annota1.exp: run until main breakpoint (timeout)
[...]
readline: readline_callback_read_char() called with no handler!^M
ERROR: Process no longer exists
All we need to is to continue the inferior in the foreground, and type
a command while the inferior is running. E.g.:
(gdb) set annotate 2
â–’â–’pre-prompt
(gdb)
â–’â–’prompt
c
â–’â–’post-prompt
Continuing.
â–’â–’starting
â–’â–’frames-invalid
*inferior is running now*
p 1<ret>
readline: readline_callback_read_char() called with no handler!
Aborted (core dumped)
$
When we run a foreground execution command we call
target_terminal_inferior to stop GDB from processing input, and to put
the inferior's terminal settings in effect. Then we tell readline to
hide the prompt with display_gdb_prompt, which clears readline's input
callback too. When the target stops, we call target_terminal_ours,
which re-installs stdin in the event loop, and then we redisplay the
prompt, reinstalling the readline callbacks.
However, when annotations are in effect, the "frames-invalid"
annotation code calls target_terminal_ours after 'resume' had already
called target_terminal_inferior:
(top-gdb) bt
#0 0x000000000056b82f in annotate_frames_invalid () at gdb/annotate.c:219
#1 0x000000000072e6cc in reinit_frame_cache () at gdb/frame.c:1705
#2 0x0000000000594bb9 in registers_changed_ptid (ptid=...) at gdb/regcache.c:612
#3 0x000000000064cca1 in target_resume (ptid=..., step=1, signal=GDB_SIGNAL_0) at gdb/target.c:2136
#4 0x00000000005f57af in resume (step=1, sig=GDB_SIGNAL_0) at gdb/infrun.c:2263
#5 0x00000000005f6051 in proceed (addr=18446744073709551615, siggnal=GDB_SIGNAL_DEFAULT, step=1) at gdb/infrun.c:2613
And then once we hide the prompt and remove readline's input handler
callback, we're in a bad state. We end up with the target running
supposedly in the foreground, but with stdin still installed on the
event loop. Any input then calls into readline, which aborts because
no rl_linefunc callback handler is installed:
Program received signal SIGABRT, Aborted.
0x0000003b36a35877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(top-gdb) bt
#0 0x0000003b36a35877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x0000003b36a36f68 in __GI_abort () at abort.c:89
During symbol reading, debug info gives source 9 included from file at zero line 0.
During symbol reading, debug info gives command-line macro definition with non-zero line 19: _STDC_PREDEF_H 1.
#2 0x0000000000784a25 in rl_callback_read_char () at src/readline/callback.c:116
#3 0x0000000000619111 in rl_callback_read_char_wrapper (client_data=0x0) at src/gdb/event-top.c:167
#4 0x00000000006194e7 in stdin_event_handler (error=0, client_data=0x0) at src/gdb/event-top.c:373
#5 0x00000000006180da in handle_file_event (data=...) at src/gdb/event-loop.c:763
#6 0x00000000006175c1 in process_event () at src/gdb/event-loop.c:340
#7 0x0000000000617688 in gdb_do_one_event () at src/gdb/event-loop.c:404
#8 0x00000000006176d8 in start_event_loop () at src/gdb/event-loop.c:429
#9 0x0000000000619143 in cli_command_loop (data=0x0) at src/gdb/event-top.c:182
#10 0x000000000060f4c8 in current_interp_command_loop () at src/gdb/interps.c:318
#11 0x0000000000610691 in captured_command_loop (data=0x0) at src/gdb/main.c:323
#12 0x000000000060c385 in catch_errors (func=0x610676 <captured_command_loop>, func_args=0x0, errstring=0x900241 "", mask=RETURN_MASK_ALL)
at src/gdb/exceptions.c:237
#13 0x0000000000611b8f in captured_main (data=0x7fffffffd7b0) at src/gdb/main.c:1151
#14 0x000000000060c385 in catch_errors (func=0x610a8e <captured_main>, func_args=0x7fffffffd7b0, errstring=0x900241 "", mask=RETURN_MASK_ALL)
at src/gdb/exceptions.c:237
#15 0x0000000000611bb8 in gdb_main (args=0x7fffffffd7b0) at src/gdb/main.c:1159
#16 0x000000000045ef57 in main (argc=3, argv=0x7fffffffd8b8) at src/gdb/gdb.c:32
The fix is to make the annotation code call target_terminal_inferior
again after printing, if the inferior's settings were in effect.
While at it, when we're doing output only, instead of
target_terminal_ours, we should call target_terminal_ours_for_output.
The latter doesn't actually remove stdin from the event loop, and also
leaves SIGINT forwarded to the target.
New test included.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17472
* annotate.c (annotate_breakpoints_invalid): Use
target_terminal_our_for_output instead of target_terminal_ours.
Give back the terminal to the target.
(annotate_frames_invalid): Likewise.
gdb/testsuite/
2014-10-17 Pedro Alves <palves@redhat.com>
PR gdb/17472
* gdb.base/annota-input-while-running.c: New file.
* gdb.base/annota-input-while-running.exp: New file.
commit 5842f62aad5c20dbb3511208efbc40a8d638b6d3
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 13:31:25 2014 +0100
Make common code handle target_terminal_* idempotency
I found a place that should be giving back the terminal to the target,
but only if the target was already owning it. So I need to add a
getter for who owns the terminal.
The trouble is that several places/target have their own globals to
track this state:
- inflow.c:terminal_is_ours
- remote.c:remote_async_terminal_ours_p
- linux-nat.c:async_terminal_is_ours
- go32-nat.c:terminal_is_ours
While one might think of adding a new target_ops method to query this,
conceptually, this state isn't really part of a particular target_ops.
Considering multi-target, the core shouldn't have to ask all targets
to know whether it's GDB that owns the terminal. There's only one GDB
(or rather, only one top level interpreter).
So what this comment does is add a new global that is tracked by the
core instead. A subsequent pass may later remove the other globals.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
* target.c (enum terminal_state): New enum.
(terminal_state): New global.
(target_terminal_init): New function.
(target_terminal_inferior): Skip if inferior already owns the
terminal.
(target_terminal_ours, target_terminal_ours_for_output): New
functions.
* target.h (target_terminal_init): Convert to function prototype.
(target_terminal_ours_for_output): Convert to function prototype
and tweak comment.
(target_terminal_ours): Convert to function prototype and tweak
comment.
* windows-nat.c (do_initial_windows_stuff): Call
target_terminal_init instead of child_terminal_init_with_pgrp.
commit 3f7308212cefe5cd958b29e0b9e92d92c4dbe941
Author: Hans-Peter Nilsson <hp@bitrange.com>
Date: Fri Oct 17 13:10:18 2014 +0200
Fix ld tests with sysroot=/ and --enable-targets=all and test --print-sysroot
* ld-scripts/sysroot-prefix.exp: Log $ld_sysroot. Handle sysroot
== "/" as a separate sysroot-configuration with separable
test-types.
(sysroot_prefix_tests): Include all existing sysroot tests in
sysroot == "/" tests except exclude those where a --sysroot option
is not specified.
* lib/ld-lib.exp (check_sysroot_available): Rewrite to use
--print-sysroot instead of relying on error code from using
--sysroot=... Also, set $ld_sysroot.
The reason we exclude not just the failing "full-path =-prefixed
without" but also the passing "plain =-prefixed without but -Lpath"
for sysroot == "/" is that for the latter to succeed, we have to make
assumptions about the system not having a /sysroot directory or
assumptions about its contents etc.
When passing --enable-targets=all --enable-64-bit-bfd (the
latter not required for a "64-bit-host" of course) the ld --help
output got too much to handle for poor tcl (or maybe dejagnu is
to blame) and remote_exec exited with an error, so the
configuration being tested was mishandled as being a
sysroot-less configuration. Using --version instead of --help
would work too, but the new --print-sysroot option calls for
nominal coverage, so why not use that instead.
commit c1e29d6622533257267e6dd136a34f9785edfb28
Author: Hans-Peter Nilsson <hp@bitrange.com>
Date: Fri Oct 17 13:07:09 2014 +0200
Implement --print-sysroot in ld.
* ldlex.h (enum option_values): Add entry OPTION_PRINT_SYSROOT.
* lexsup.c (ld_options): Add entry for --print-sysroot.
(parse_args) <OPTION_PRINT_SYSROOT>: Print sysroot and exit early.
commit cb9322a80e3a92aceb7e325ab34f2a15edbae05a
Author: Hans-Peter Nilsson <hp@bitrange.com>
Date: Fri Oct 17 13:06:56 2014 +0200
Implement --print-sysroot in ld.
* ldlex.h (enum option_values): Add entry OPTION_PRINT_SYSROOT.
* lexsup.c (ld_options): Add entry for --print-sysroot.
(parse_args) <OPTION_PRINT_SYSROOT>: Print sysroot and exit early.
commit 32a8097ba5dd6ddb71c0fb2fccbac262c371846a
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 11:18:59 2014 +0100
Delete Tru64 support
This commit does most of the mechanical removal. IOW, the easy part.
procfs.c isn't touched beyond removing a couple obvious bits that are
guarded by a couple macros defined in config/alpha/nm-osf3.h. Going
beyond that for procfs.c & co would be a harder excision that
potentially affects Solaris.
Some comments in the generic alpha code ABIs that may still be
relevant and I wouldn't know what to do with them. That can always be
done on a separate pass, preferably by someone who can test on alpha.
A couple other spots have references to OSF/Tru64 and related files
being removed, but it felt like removing them would make things worse,
not better. We can revisit those when we next need to touch that
code.
I didn't remove a reference to osf in testsuite/lib/future.exp, as I
believe that code is imported from DejaGNU.
Built and tested on x86_64 Fedora 20, with --enable-targets=all.
Tested that building for --target=alpha-osf3 on x86_64 Fedora 20
fails with:
checking for default auto-load directory... $debugdir:$datadir/auto-load
checking for default auto-load safe-path... $debugdir:$datadir/auto-load
*** Configuration alpha-unknown-osf3 is obsolete.
*** Support has been REMOVED.
make[1]: *** [configure-gdb] Error 1
make[1]: Leaving directory `build-osf'
make: *** [all] Error 2
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
* Makefile.in (ALL_64_TARGET_OBS): Remove alpha-osf1-tdep.o.
(HFILES_NO_SRCDIR): Remove config/alpha/nm-osf3.h.
(ALLDEPFILES): Remove alpha-nat.c, alpha-osf1-tdep.c and
solib-osf.c.
* NEWS: Mention that support for alpha*-*-osf* has been removed.
* ada-lang.h [__alpha__ && __osf__]
(ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS): Delete.
* alpha-nat.c, alpha-osf1-tdep.c: Delete files.
* alpha-tdep.c (alpha_gdbarch_init): Remove reference to
GDB_OSABI_OSF1.
* config/alpha/alpha-osf3.mh, config/alpha/nm-osf3.h: Delete
files.
* config/djgpp/fnchange.lst (config/alpha/alpha-osf1.mh)
(config/alpha/alpha-osf2.mh, config/alpha/alpha-osf3.mh): Delete.
* configure: Regenerate.
* configure.ac: Remove references to osf.
* configure.host: Handle alpha*-*-osf* in the obsolete hosts
section. Remove all other references to osf.
* configure.tgt: Add alpha*-*-osf* to the obsolete targets section.
Remove all other references to osf.
* dec-thread.c: Delete file.
* defs.h (GDB_OSABI_OSF1): Delete.
* inferior.h (START_INFERIOR_TRAPS_EXPECTED): New unconditionally
defined.
* osabi.c (gdb_osabi_names): Delete "OSF/1".
* procfs.c (procfs_debug_inferior) [PROCFS_DONT_TRACE_FAULTS]:
Delete code.
(unconditionally_kill_inferior)
[PROCFS_NEED_CLEAR_CURSIG_FOR_KILL]: Delete code.
* solib-osf.c: Delete file.
gdb/testsuite/
2014-10-17 Pedro Alves <palves@redhat.com>
* gdb.base/callfuncs.exp: emove references to osf.
* gdb.base/sigall.exp: Likewise.
* gdb.gdb/selftest.exp: Likewise.
* gdb.hp/gdb.base-hp/callfwmall.exp: Likewise.
* gdb.mi/non-stop.c: Likewise.
* gdb.mi/pthreads.c: Likewise.
* gdb.reverse/sigall-precsave.exp: Likewise.
* gdb.reverse/sigall-reverse.exp: Likewise.
* gdb.threads/pthreads.c: Likewise.
* gdb.threads/pthreads.exp: Likewise.
gdb/doc/
2014-10-17 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Ada Tasks and Core Files): Delete mention of Tru64.
(SVR4 Process Information): Delete mention of OSF/1.
commit 80134cf5b3ca1f75a96af1856fdaad29ad1f57aa
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 17 11:05:06 2014 +0100
Fix build without libexpat
clear_threads_listing_context is used for thread listing methods other
than the xml based, but it's only defined when HAVE_LIBEXPAT is defined.
gdb/
2014-10-17 Pedro Alves <palves@redhat.com>
* remote.c (clear_threads_listing_context): Move higher up, out of
the HAVE_LIBEXPAT guard.
commit 7a3517ffebf218c8f34ce2eaea40ab042ce33f9f
Author: Yao Qi <yao@codesourcery.com>
Date: Fri Oct 10 21:17:11 2014 +0800
Don't check target_info exists noargs in commands.exp
I am confused by the noargs checking at each proc in commands.exp,
if [target_info exists noargs] {
verbose "Skipping progvar_simple_while_test because of noargs."
return
}
gdb_test_no_output "set args 5" "set args in progvar_simple_while_test"
if { ![runto factorial] } then { gdb_suppress_tests }
# Don't depend upon argument passing, since most simulators don't
# currently support it. Bash value variable to be what we want.
gdb_test "p value=5" ".*" "set value to 5 in progvar_simple_if_test #2"
They are conflicting to me. If the argument passing can't be done on
the target, we skip this test, why do we still have to set value below?
On the other hand, the test case is compiled with -DFAKEARGV, it doesn't
get anything from argv[1], why do we need to skip it if noargs is true?
I don't find any useful clues from the git log, as the code is quite
old, predating import to sourceware cvs. However, I find something
useful from the ChangeLog.
Thu Jul 20 13:28:36 1995 Jeffrey A. Law <law@rtl.cygnus.com>
.....
* gdb.base/commands.exp: Protect tests which need arguments with
$noargs conditionals.
Mon Apr 21 13:38:58 1997 Fred Fish <fnf@cygnus.com>
* gdb.base/run.c: Use FAKEARGV to build test executable that
does not require a command line arg, since most simulators
don't currently support passing such an arg into the simulated
program.
* gdb.base/commands.exp: Change tests to insert the proper
value as the arg to the first recursive factorial call. Change
compilation line to define FAKEARGV at compile time.
Jeff added noargs checking as argument is passed to the inferior. Then,
I presume Fred wanted to run this test on simulators which don't support
argument passing, and change the code not get input from argv. (I guess)
noargs wasn't set in simulator board files at that moment.
Since Fred changed test to set input by gdb, instead of getting input
from argv, the test should be able to run on target doesn't support
argument passing, such as simulator and gdbserver.
This patch is to remove these checks to noargs and "set args". I run
commands.exp with these board files, and no fail is found
- unix and native-gdbserver
- arm-none-eabi with qemu
- gdbserver on arm-linux-gnueabi with qemu
gdb/testsuite:
2014-10-17 Yao Qi <yao@codesourcery.com>
* gdb.base/commands.exp (gdbvar_complex_if_while_test): Don't check
'target_info exists noargs'.
(test_command_prompt_position): Likewise.
(progvar_simple_if_test): Don't check 'target_info exists noargs'.
Remove "set args".
(progvar_simple_while_test): Likewise.
(progvar_complex_if_while_test): Likewise.
(if_while_breakpoint_command_test): Likewise.
(infrun_breakpoint_command_test): Likewise.
(breakpoint_command_test): Likewise.
(watchpoint_command_test): Likewise.
(bp_deleted_in_command_test): Likewise.
(temporary_breakpoint_commands): Likewise.
commit 48cfaa5c1d550990cc8910fb9e1d80c6a0225c23
Author: Alan Modra <amodra@gmail.com>
Date: Fri Oct 17 09:31:12 2014 +1030
daily update
commit 5af04e20f6333dc224d1668dcd433d7c8ca84e71
Author: Joel Brobecker <brobecker@adacore.com>
Date: Tue Oct 14 12:47:43 2014 -0400
Use strtod instead of strtold in libiberty/d-demangle.c
strtold is currently used to decode templates which have a floating-point
value encoded inside; but this routine is not available on some systems,
such as Solaris 2.9 for instance.
This patch fixes the issue by replace the use of strtold by strtod.
It reduces a bit the precision, but it should still remain acceptable
in most cases.
libiberty/ChangeLog:
* d-demangle.c: Replace strtold with strtod in global comment.
(strtold): Remove declaration.
(strtod): New declaration.
(dlang_parse_real): Declare value as double instead of long
double. Replace call to strtold by call to strtod.
Update format in call to snprintf.
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