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gdb_demangle. This change was included in an RFC from last
March [1] but omitted from the eventual commit.
[1] https://sourceware.org/ml/gdb-patches/2013-03/msg00235.html
2014-06-03 Gary Benson <gbenson@redhat.com>
* gnu-v2-abi.c (gnuv2_value_rtti_type): Use gdb_demangle.
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at same location - test
GDB gets confused when removing a software single-step breakpoint that
is at the same address as another breakpoint. Add another kfailed
test.
gdb/testsuite/
2014-06-03 Pedro Alves <palves@redhat.com>
PR breakpoints/17000
* gdb.base/sss-bp-on-user-bp-2.c: New file.
* gdb.base/sss-bp-on-user-bp-2.exp: New file.
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* Makefile.in (SUBDIR_GUILE_OBS): Add scm-param.o.
(SUBDIR_GUILE_SRCS): Add scm-param.c.
(scm-param.o): New rule.
* guile/guile-internal.h (gdbscm_gc_dup_argv): Declare.
(gdbscm_misc_error): Declare.
(gdbscm_canonicalize_command_name): Declare.
(gdbscm_scm_to_host_string): Declare.
(gdbscm_scm_from_host_string): Declare.
(gdbscm_initialize_parameters): Declare.
* guile/guile.c (initialize_gdb_module): Call
gdbscm_initialize_parameters.
* guile/lib/gdb.scm: Export parameter symbols.
* guile/scm-cmd.c (gdbscm_canonicalize_command_name): Renamed from
cmdscm_canonicalize_name and made public. All callers updated.
* guile/scm-exception.c (gdbscm_misc_error): New function.
* guile/scm-param.c: New file.
* guile/scm-string.c (gdbscm_scm_to_string): Add comments.
(gdbscm_scm_to_host_string): New function.
(gdbscm_scm_from_host_string): New function.
* scm-utils.c (gdbscm_gc_dup_argv): New function.
testsuite/
* gdb.guile/scm-parameter.exp: New file.
doc/
* guile.texi (Guile API): Add entry for Parameters In Guile.
(GDB Scheme Data Types): Mention <gdb:parameter> object.
(Parameters In Guile): New node.
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* Makefile.in (SUBDIR_GUILE_OBS): Add scm-cmd.o.
(SUBDIR_GUILE_SRCS): Add scm-cmd.c.
(scm-cmd.o): New rule.
* guile/guile-internal.h (gdbscm_gc_xstrdup): Declare.
(gdbscm_user_error_p): Declare.
(gdbscm_parse_command_name): Declare.
(gdbscm_valid_command_class_p): Declare.
(gdbscm_initialize_commands): Declare.
* guile/guile.c (initialize_gdb_module): Call
gdbscm_initialize_commands.
* guile/lib/gdb.scm: Export command symbols.
* guile/lib/gdb/init.scm (%exception-keys): Add gdb:user-error.
(throw-user-error): New function.
* guile/scm-cmd.c: New file.
* guile/scm-exception.c (user_error_symbol): New static global.
(gdbscm_user_error_p): New function.
(gdbscm_initialize_exceptions): Set user_error_symbol.
* scm-utils.c (gdbscm_gc_xstrdup): New function.
testsuite/
* gdb.guile/scm-cmd.c: New file.
* gdb.guile/scm-cmd.exp: New file.
doc/
* guile.texi (Guile API): Add entry for Commands In Guile.
(Basic Guile) <parse-and-eval>: Add reference.
(Basic Guile) <string->argv>: Move definition to Commands In Guile.
(GDB Scheme Data Types): Mention <gdb:command> object.
(Commands In Guile): New node.
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When using the multi-line feature, we don't want the gdb CLI to remove
comments from the command list, as this will remove things like
"#define".
* top.c (command_loop): Handle comments here...
(command_line_input): ... not here.
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* Makefile.in (SUBDIR_GUILE_OBS): Add scm-progspace.o.
(SUBDIR_GUILE_SRCS): Add scm-progspace.c.
(scm-progspace.o): New rule.
* guile/guile-internal.h (pspace_smob): New typedef.
(psscm_pspace_smob_pretty_printers): Declare.
(psscm_pspace_smob_from_pspace): Declare.
(psscm_scm_from_pspace): Declare.
* guile/guile.c (initialize_gdb_module): Call
gdbscm_initialize_pspaces.
* guile/lib/gdb.scm: Export progspace symbols.
* guile/lib/gdb/printing.scm (prepend-pretty-printer!): Add progspace
support.
(append-pretty-printer!): Ditto.
* guile/scm-pretty-print.c (ppscm_find_pretty_printer_from_progspace):
Implement.
* guile/scm-progspace.c: New file.
doc/
* guile.texi (Guile API): Add entry for Progspaces In Guile.
(GDB Scheme Data Types): Mention <gdb:progspace> object.
(Progspaces In Guile): New node.
testsuite/
* gdb.guile/scm-pretty-print.exp: Add tests for objfile and progspace
pretty-printer lookup.
* gdb.guile/scm-pretty-print.scm (pp_s-printer): New function.
(make-pp_s-printer): Call it.
(make-pretty-printer-from-dict): New function.
(lookup-pretty-printer-maker-from-dict): New function.
(*pretty-printer*): Simplify.
(make-objfile-pp_s-printer): New function.
(install-objfile-pretty-printers!): New function.
(make-progspace-pp_s-printer): New function.
(install-progspace-pretty-printers!): New function.
* gdb.guile/scm-progspace.c: New file.
* gdb.guile/scm-progspace.exp: New file.
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Power8 fuses addis,addi and addis,ld sequences when the target of the
addis is the same as the addi/ld. Thus
addis r12,r2,xxx@ha
addi r12,r12,xxx@l / ld r12,xxx@l(r12)
is faster than
addis r11,r2,xxx@ha
addi r12,r11,xxx@l / ld r12,xxx@l(r11)
So use the form that allows fusion in plt call and branch stubs.
bfd/
* elf64-ppc.c (ADDIS_R12_R2): Define.
(build_plt_stub): Support fusion on ELFv2 stub.
(ppc_build_one_stub): Likewise for plt branch stubs.
gold/
* powerpc.cc (addis_12_2): Define.
(Stub_table::do_write): Support fusion on ELFv2 stubs.
ld/testsuite/
* ld-powerpc/elfv2exe.d: Update for changed plt call stubs.
gdb/
* ppc64-tdep.c (ppc64_standard_linkage8): New.
(ppc64_skip_trampoline_code): Recognise ELFv2 stub supporting fusion.
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* dwarf2read.c (struct dwarf2_per_objfile): New member
n_allocated_type_units.
(struct dwarf2_per_objfile) <tu_stats>: New member
nr_all_type_units_reallocs.
(create_signatured_type_table_from_index): Initialize
n_allocated_type_units
(create_all_type_units): Ditto.
(add_type_unit): Move up in file. New arg slot.
All callers updated. Increase space for all_type_units more
efficiently.
(fill_in_sig_entry_from_dwo_entry): Handle psymtabs.
(lookup_dwo_signatured_type): Handle skeletonless TUs.
(lookup_dwp_signatured_type): Ditto.
(init_tu_and_read_dwo_dies): New arg use_existing_cu.
All callers updated.
(build_type_psymtabs_1): Leave type_unit_groups as
NULL if no TUs present.
(print_tu_stats): New function.
(process_skeletonless_type_unit): New function.
(process_dwo_file_for_skeletonless_type_units): New
function.
(process_skeletonless_type_units): New function.
(dwarf2_build_psymtabs_hard): Handle skeletonless TUs.
Call print tu_stats if debugging enabled.
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While the full fix for PR 15180 isn't in, it's best if we at least
make sure that GDB doesn't lose control when a breakpoint is set at
the same address as a dprintf.
gdb/
2014-06-02 Pedro Alves <palves@redhat.com>
* breakpoint.c (build_target_command_list): Don't build a command
list if we have any duplicate location that isn't a dprintf.
gdb/testsuite/
2014-06-02 Pedro Alves <palves@redhat.com>
* gdb.base/dprintf-bp-same-addr.c: New file.
* gdb.base/dprintf-bp-same-addr.exp: New file.
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If some event happens to trigger at the same address as a dprintf-style
agent dprintf is installed, GDB will complain, like:
(gdb) continue
Continuing.
May only run agent-printf on the target
(gdb)
Such dprintfs are completely handled on the target side, so they can't
explain a stop, but GDB is currently putting then on the bpstat chain
anyway, because they currently unconditionally use bkpt_breakpoint_hit
as breakpoint_hit method.
gdb/
2014-06-02 Pedro Alves <palves@redhat.com>
* breakpoint.c (dprintf_breakpoint_hit): New function.
(initialize_breakpoint_ops): Install it as dprintf's
breakpoint_hit method.
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If GDB decides to change the breakpoint's conditions or commands,
it'll reinsert the same breakpoint again, with the new options
attached, without deleting the previous breakpoint. E.g.,
(gdb) set breakpoint always-inserted on
(gdb) b main if 0
Breakpoint 1 at 0x400594: file foo.c, line 21.
Sending packet: $Z0,400594,1;X3,220027#68...Packet received: OK
(gdb) b main
Breakpoint 15 at 0x400594: file foo.c, line 21.
Sending packet: $Z0,400594,1#49...Packet received: OK
GDBserver understands this and deletes the breakpoint's previous
conditions. But, it forgets to delete the previous commands.
gdb/gdbserver/
2014-06-02 Pedro Alves <palves@redhat.com>
* ax.c (gdb_free_agent_expr): New function.
* ax.h (gdb_free_agent_expr): New declaration.
* mem-break.c (delete_gdb_breakpoint_1): Also clear the commands
list.
(clear_breakpoint_conditions, clear_breakpoint_commands): Make
static.
(clear_breakpoint_conditions_and_commands): New function.
* mem-break.h (clear_breakpoint_conditions): Delete declaration.
(clear_breakpoint_conditions_and_commands): New declaration.
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2014-06-02 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
* gdb.arch/powerpc-power.exp: Add power8 instructions to the testcase.
* gdb.arch/powerpc-power.s: Likewise.
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This patch removes some code in gdb.base/compilation.exp which
is aimed at restoring the original timeout global value after having
changed it for this testcase. Restoring the timeout global is not
necessary as this is taken care of by gdb_init, which is called
at the start of each testing.
gdb/testsuite/ChangeLog:
* gdb.base/completion.exp: Remove code aimed at restoring TIMEOUT.
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At the time this function was written, there was no filename_ncmp,
only FILENAME_CMP. So, in order to do an n-cmp, we had to make a local
copy of the first n characters of our string and use that to perform
the comparison. This patch simplifies the function's implementation,
now that we have filename_ncmp.
gdb/ChangeLog:
* source.c (substitute_path_rule_matches): Simplify using
filename_ncmp instead of FILENAME_CMP.
Tested on x86_64-linux.
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gdb/ChangeLog:
* source.c (substitute_path_rule_matches): Remove trailing spaces.
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gdb/
2014-06-01 Ludovic Courtès <ludo@gnu.org>
* configure.ac: When Guile is available, check for the
availability of 'scm_new_smob'.
* configure, config.h.in: Regenerate.
* guile/guile-internal.h (scm_new_smob) [!HAVE_SCM_NEW_SMOB]: New
function.
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gdb.base/watchpoint.exp has a test below which expects to see "Cannot
access memory at address 0x0" when a null pointer is dereferenced.
gdb_test "watch -location nullptr->p->x" \
"Cannot access memory at address 0x0"
This assumption is not true when the target is no-mmu, so we get
watch -location nullptr->p->x
Hardware watchpoint 28: -location nullptr->p->x
(gdb) FAIL: gdb.base/watchpoint.exp: watch -location nullptr->p->x
This patch is to check whether null pointer can be dereferenced first
and then do the test.
gdb/testsuite:
2014-06-01 Yao Qi <yao@codesourcery.com>
* gdb.base/watchpoint.exp (test_watch_location): Check null
pointer can be dereferenced. If not, do the test, otherwise
skip it.
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https://sourceware.org/ml/gdb-patches/2014-05/msg00737.html
Currently a MEMORY_ERROR raised during unwinding a frame will cause the
unwind to stop with an error message, for example:
(gdb) bt
#0 breakpt () at amd64-invalid-stack-middle.c:27
#1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
#2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
#3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
#4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50
Cannot access memory at address 0x2aaaaaab0000
However, frame #4 is marked as being the end of the stack unwind, so a
subsequent request for the backtrace looses the error message, such as:
(gdb) bt
#0 breakpt () at amd64-invalid-stack-middle.c:27
#1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
#2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
#3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
#4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50
When fetching the backtrace, or requesting the stack depth using the MI
interface the situation is even worse, the first time a request is made
we encounter the memory error and so the MI returns an error instead of
the correct result, for example:
(gdb) -stack-info-depth
^error,msg="Cannot access memory at address 0x2aaaaaab0000"
Or,
(gdb) -stack-list-frames
^error,msg="Cannot access memory at address 0x2aaaaaab0000"
However, once one of these commands has been used gdb has, internally,
walked the stack and figured that out that frame #4 is the bottom of the
stack, so the second time an MI command is tried you'll get the "expected"
result:
(gdb) -stack-info-depth
^done,depth="5"
Or,
(gdb) -stack-list-frames
^done,stack=[frame={level="0", .. snip lots .. }]
After this patch the MEMORY_ERROR encountered during the frame unwind is
attached to frame #4 as the stop reason, and is displayed in the CLI each
time the backtrace is requested. In the MI, catching the error means that
the "expected" result is returned the first time the MI command is issued.
So, from the CLI the results of the backtrace will be:
(gdb) bt
#0 breakpt () at amd64-invalid-stack-middle.c:27
#1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
#2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
#3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
#4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50
Backtrace stopped: Cannot access memory at address 0x2aaaaaab0000
Each and every time that the backtrace is requested, while the MI output
will similarly be consistently:
(gdb) -stack-info-depth
^done,depth="5"
Or,
(gdb) -stack-list-frames
^done,stack=[frame={level="0", .. snip lots .. }]
gdb/ChangeLog:
* frame.c (struct frame_info): Add stop_string field.
(get_prev_frame_always_1): Renamed from get_prev_frame_always.
(get_prev_frame_always): Old content moved into
get_prev_frame_always_1. Call get_prev_frame_always_1 inside
TRY_CATCH, handle MEMORY_ERROR exceptions.
(frame_stop_reason_string): New function definition.
* frame.h (unwind_stop_reason_to_string): Extend comment to
mention frame_stop_reason_string.
(frame_stop_reason_string): New function declaration.
* stack.c (frame_info): Switch to frame_stop_reason_string.
(backtrace_command_1): Switch to frame_stop_reason_string.
* unwind_stop_reason.def: Add UNWIND_MEMORY_ERROR.
(LAST_ENTRY): Changed to UNWIND_MEMORY_ERROR.
* guile/lib/gdb.scm: Add FRAME_UNWIND_MEMORY_ERROR to export list.
gdb/doc/ChangeLog:
* guile.texi (Frames In Guile): Mention FRAME_UNWIND_MEMORY_ERROR.
* python.texi (Frames In Python): Mention
gdb.FRAME_UNWIND_MEMORY_ERROR.
gdb/testsuite/ChangeLog:
* gdb.arch/amd64-invalid-stack-middle.exp: Update expected results.
* gdb.arch/amd64-invalid-stack-top.exp: Likewise.
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https://sourceware.org/ml/gdb-patches/2014-05/msg00721.html
This function is confusingly named, the "frame_" in the name implies it
somehow is frame dependent, when in reality the function just converts an
'enum unwind_stop_reason' value to a string.
gdb/ChangeLog:
* frame.c (frame_stop_reason_string): Rename to ...
(unwind_stop_reason_to_string): this.
* frame.h (frame_stop_reason_string): Rename to ...
(unwind_stop_reason_to_string): this.
* stack.c (frame_info): Update call to frame_stop_reason_string.
(backtrace_command_1): Likewise.
* guile/scm-frame.c (gdbscm_unwind_stop_reason_string): Likewise.
* python/py-frame.c (gdbpy_frame_stop_reason_string): Likewise.
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https://sourceware.org/ml/gdb-patches/2014-05/msg00712.html
If an error is thrown during computing a frame id then the frame is left
in existence but without a valid frame id, this will trigger internal
errors if/when the frame is later visited (for example in a backtrace).
This patch catches errors raised while computing the frame id, and
arranges for the new frame, the one without a frame id, to be removed
from the linked list of frames.
gdb/ChangeLog:
* frame.c (remove_prev_frame): New function.
(get_prev_frame_if_no_cycle): Create / discard cleanup using
remove_prev_frame.
gdb/testsuite/ChangeLog:
* gdb.arch/amd64-invalid-stack-middle.S: New file.
* gdb.arch/amd64-invalid-stack-middle.c: New file.
* gdb.arch/amd64-invalid-stack-middle.exp: New file.
* gdb.arch/amd64-invalid-stack-top.c: New file.
* gdb.arch/amd64-invalid-stack-top.exp: New file.
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at same location - test
GDB gets confused when removing a software single-step breakpoint that
is at the same address as another breakpoint. Add a kfailed test.
gdb/testsuite/
2014-05-30 Pedro Alves <palves@redhat.com>
PR breakpoints/17000
* gdb.base/sss-bp-on-user-bp.c: New file.
* gdb.base/sss-bp-on-user-bp.exp: New file.
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As suggested by Andrew Pinski.
gdb/testsuite/
* gdb.opt/inline-break.c: Fix clang compatibility by specifying
gnu_inline semantics via attribute.
* gdb.opt/inline-break.exp: Remove -std=c89 now that the test
source explicitly specifies the required semantics.
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* gdb.reverse/sigall-reverse.exp: Fix a typo.
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branch showed some extra assertions I have in place triggering. Turns
out my previous change to 'resume' was incomplete, and we mishandle
the 'hw_step' / 'step' variable pair. (I swear I had fixed this, but
I guess I lost that in some local branch...)
Tested on x86_64 Fedora 20.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
* infrun.c (resume): Rename local 'hw_step' to 'entry_step'
and make it const. When a single-step decays to a continue,
clear 'step', not 'hw_step'. Pass whether the caller wanted
to step to user_visible_resume_ptid, not what we ask the
target to do.
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- all end_stepping_range callers also set stop_step.
- all places that set stop_step call end_stepping_range and
stop_waiting too.
IOW, all places where we handle "end stepping range" do:
ecs->event_thread->control.stop_step = 1;
end_stepping_range ();
stop_waiting (ecs);
Factor that out into end_stepping_range itself.
Tested on x86_64 Fedora 20.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
* infrun.c (process_event_stop_test, handle_step_into_function)
(handle_step_into_function_backward): Adjust.
Don't set the even thread's stop_step and call stop_waiting before
calling end_stepping_range. Instead do that ...
(end_stepping_range): ... here. Take an ecs pointer parameter.
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stop_stepping is called even when we weren't stepping. It's job really is:
static void
stop_waiting (struct execution_control_state *ecs)
{
...
/* Let callers know we don't want to wait for the inferior anymore. */
ecs->wait_some_more = 0;
}
So rename it for clarity.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
* infrun.c (stop_stepping): Rename to ...
(stop_waiting): ... this.
(proceed): Update comment.
(process_event_stop_test, handle_inferior_event)
(handle_signal_stop, handle_step_into_function)
(handle_step_into_function_backward): Update.
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I managed to miss an interaction between the recent *running patch,
and target-async, which resulted in infcalls being completely broken
on GNU/Linux and remote targets (that is, the async-capable targets).
Temporary breakpoint 1, main () at threads.c:35
35 long i = 0;
(gdb) p malloc (0)
The program being debugged stopped while in a function called from GDB.
Evaluation of the expression containing the function
(malloc) will be abandoned.
When the function is done executing, GDB will silently stop.
(gdb) p malloc (0)
Program received signal SIGSEGV, Segmentation fault.
0x000000000058d7e8 in get_regcache_aspace (regcache=0x0) at ../../src/gdb/regcache.c:281
281 return regcache->aspace;
(top-gdb)
The issue is that when running an infcall, the thread is no longer
marked as running, so run_inferior_call is not calling
wait_for_inferior anymore.
Fix this by doing what the comment actually says we do:
"Do here what `proceed' itself does in sync mode."
And proceed doesn't check whether the target is running.
I notice this is broken in case of the early return in proceed, but we
were broken before in that case anyway, because run_inferior_call will
think the call actually ran. Seems like we should make proceed have a
boolean return, and go through all callers making use of it, if
necessary.
But for now, just fix the regression.
Tested on x86_64 Fedora 20.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
* infcall.c (run_inferior_call): Don't check whether the current
thread is running after the proceed call.
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This finally makes background execution commands possible by default.
However, in order to do that, there's one last thing we need to do --
we need to separate the MI and target notions of "async". Unlike the
CLI, where the user explicitly requests foreground vs background
execution in the execution command itself (c vs c&), MI chose to treat
"set target-async" specially -- setting it changes the default
behavior of execution commands.
So, we can't simply "set target-async" default to on, as that would
affect MI frontends. Instead we have to make the setting MI-specific,
and teach MI about sync commands on top of an async target.
Because the "target" word in "set target-async" ends up as a potential
source of confusion, the patch adds a "set mi-async" option, and makes
"set target-async" a deprecated alias.
Rather than make the targets always async, this patch introduces a new
"maint set target-async" option so that the GDB developer can control
whether the target is async. This makes it simpler to debug issues
arising only in the synchronous mode; important because sync mode
seems unlikely to go away.
Unlike in previous revisions, "set target-async" does not affect this
new maint parameter. The rationale for this is that then one can
easily run the test suite in the "maint set target-async off" mode and
have tests that enable mi-async fail just like they fail on
non-async-capable targets. This emulation is exactly the point of the
maint option.
I had asked Tom in a previous iteration to split the actual change of
the target async default to a separate patch, but it turns out that
that is quite awkward in this version of the patch, because with MI
async and target async decoupled (unlike in previous versions), if we
don't flip the default at the same time, then just "set target-async
on" alone never actually manages to do anything. It's best to not
have that transitory state in the tree.
Given "set target-async on" now only has effect for MI, the patch goes
through the testsuite removing it from non-MI tests. MI tests are
adjusted to use the new and less confusing "mi-async" spelling.
2014-05-29 Pedro Alves <palves@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Mention "maint set target-async", "set mi-async", and that
background execution commands are now always available.
* target.h (target_async_permitted): Update comment.
* target.c (target_async_permitted, target_async_permitted_1):
Default to 1.
(set_target_async_command): Rename to ...
(maint_set_target_async_command): ... this.
(show_target_async_command): Rename to ...
(maint_show_target_async_command): ... this.
(_initialize_target): Adjust.
* infcmd.c (prepare_execution_command): Make extern.
* inferior.h (prepare_execution_command): Declare.
* infrun.c (set_observer_mode): Leave target async alone.
* mi/mi-interp.c (mi_interpreter_init): Install
mi_on_sync_execution_done as sync_execution_done observer.
(mi_on_sync_execution_done): New function.
(mi_execute_command_input_handler): Don't print the prompt if we
just started a synchronous command with an async target.
(mi_on_resume): Check sync_execution before printing prompt.
* mi/mi-main.h (mi_async_p): Declare.
* mi/mi-main.c: Include gdbcmd.h.
(mi_async_p): New function.
(mi_async, mi_async_1): New globals.
(set_mi_async_command, show_mi_async_command, mi_async): New
functions.
(exec_continue): Call prepare_execution_command.
(run_one_inferior, mi_cmd_exec_run, mi_cmd_list_target_features)
(mi_execute_async_cli_command): Use mi_async_p.
(_initialize_mi_main): Install "set mi-async". Make
"target-async" a deprecated alias.
2014-05-29 Pedro Alves <palves@redhat.com>
Tom Tromey <tromey@redhat.com>
* gdb.texinfo (Non-Stop Mode): Remove "set target-async 1"
from example.
(Asynchronous and non-stop modes): Document '-gdb-set mi-async'.
Mention that target-async is now deprecated.
(Maintenance Commands): Document maint set/show target-async.
2014-05-29 Pedro Alves <palves@redhat.com>
Tom Tromey <tromey@redhat.com>
* gdb.base/async-shell.exp: Don't enable target-async.
* gdb.base/async.exp
* gdb.base/corefile.exp (corefile_test_attach): Remove 'async'
parameter. Adjust.
(top level): Don't test with "target-async".
* gdb.base/dprintf-non-stop.exp: Don't enable target-async.
* gdb.base/gdb-sigterm.exp: Don't test with "target-async".
* gdb.base/inferior-died.exp: Don't enable target-async.
* gdb.base/interrupt-noterm.exp: Likewise.
* gdb.mi/mi-async.exp: Use "mi-async" instead of "target-async".
* gdb.mi/mi-nonstop-exit.exp: Likewise.
* gdb.mi/mi-nonstop.exp: Likewise.
* gdb.mi/mi-ns-stale-regcache.exp: Likewise.
* gdb.mi/mi-nsintrall.exp: Likewise.
* gdb.mi/mi-nsmoribund.exp: Likewise.
* gdb.mi/mi-nsthrexec.exp: Likewise.
* gdb.mi/mi-watch-nonstop.exp: Likewise.
* gdb.multi/watchpoint-multi.exp: Adjust comment.
* gdb.python/py-evsignal.exp: Don't enable target-async.
* gdb.python/py-evthreads.exp: Likewise.
* gdb.python/py-prompt.exp: Likewise.
* gdb.reverse/break-precsave.exp: Don't test with "target-async".
* gdb.server/solib-list.exp: Don't enable target-async.
* gdb.threads/thread-specific-bp.exp: Likewise.
* lib/mi-support.exp: Adjust to use mi-async.
|
|
Enabling target-async by default will require implementing sync
execution on top of an async target, much like foreground command are
implemented on the CLI in async mode.
In order to do that, we will need better control of when to print the
MI prompt. Currently the interp->display_prompt_p hook is all we
have, and MI just always returns false, meaning, make
display_gdb_prompt a no-op. We'll need to be able to know to print
the MI prompt in some of the conditions that display_gdb_prompt is
called from the core, but not all.
This is all a litte twisted currently. As we can see,
display_gdb_prompt is really CLI specific, so make the console
interpreters (console/tui) themselves call it. To be able to do that,
and add a few different observers that the interpreters can use to
distinguish when or why the the prompt is being printed:
#1 - one called whenever a command is cancelled due to an error.
#2 - another for when a foreground command just finished.
In both cases, CLI wants to print the prompt, while MI doesn't.
MI will want to print the prompt in the second case when in a special
MI mode.
The display_gdb_prompt call in interp_set made me pause. The comment
there reads:
/* Finally, put up the new prompt to show that we are indeed here.
Also, display_gdb_prompt for the console does some readline magic
which is needed for the console interpreter, at least... */
But, that looks very much like a no-op to me currently:
- the MI interpreter always return false in the prompt hook, meaning
actually display no prompt.
- the interpreter used at that point is still quiet. And the
console/tui interpreters return false in the prompt hook if they're
quiet, meaning actually display no prompt.
The only remaining possible use would then be the readline magic. But
whatever that might have been, it's not reacheable today either,
because display_gdb_prompt returns early, before touching readline if
the interpreter returns false in the display_prompt_p hook.
Tested on x86_64 Fedora 20, sync and async modes.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_interpreter_display_prompt_p): Delete.
(_initialize_cli_interp): Adjust.
* event-loop.c: Include "observer.h".
(start_event_loop): Notify 'command_error' observers instead of
calling display_gdb_prompt. Remove FIXME comment.
* event-top.c (display_gdb_prompt): Remove call into the
interpreters.
* inf-loop.c: Include "observer.h".
(inferior_event_handler): Notify 'command_error' observers instead
of calling display_gdb_prompt.
* infrun.c (fetch_inferior_event): Notify 'sync_execution_done'
observers instead of calling display_gdb_prompt.
* interps.c (interp_set): Don't call display_gdb_prompt.
(current_interp_display_prompt_p): Delete.
* interps.h (interp_prompt_p): Delete declaration.
(interp_prompt_p_ftype): Delete.
(struct interp_procs) <prompt_proc_p>: Delete field.
(current_interp_display_prompt_p): Delete declaration.
* mi-interp.c (mi_interpreter_prompt_p): Delete.
(_initialize_mi_interp): Adjust.
* tui-interp.c (tui_init): Install 'sync_execution_done' and
'command_error' observers.
(tui_on_sync_execution_done, tui_on_command_error): New
functions.
(tui_display_prompt_p): Delete.
(_initialize_tui_interp): Adjust.
gdb/doc/
2014-05-29 Pedro Alves <palves@redhat.com>
* observer.texi (sync_execution_done, command_error): New
subjects.
|
|
Ignoring expected and desired differences like whether the prompt is
output after *stoppped records, GDB MI output is still different in
sync and async modes.
In sync mode, when a CLI execution command is entered, the "reason"
field is missing in the *stopped async record. And in async mode, for
some events, like program exits, the corresponding CLI output is
missing in the CLI channel.
Vis, diff between sync vs async modes:
run
^running
*running,thread-id="1"
(gdb)
...
- ~"[Inferior 1 (process 15882) exited normally]\n"
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1",exit-code="0"
- *stopped
+ *stopped,reason="exited-normally"
si
...
(gdb)
~"0x000000000045e033\t29\t memset (&args, 0, sizeof args);\n"
- *stopped,frame=...,thread-id="1",stopped-threads="all",core="0"
+ *stopped,reason="end-stepping-range",frame=...,thread-id="1",stopped-threads="all",core="0"
(gdb)
In addition, in both cases, when a MI execution command is entered,
and a breakpoint triggers, the event is sent to the console too. But
some events like program exits have the CLI output missing in the CLI
channel:
-exec-run
^running
*running,thread-id="1"
(gdb)
...
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1",exit-code="0"
- *stopped
+ *stopped,reason="exited-normally"
We'll want to make background commands always possible by default.
IOW, make target-async be the default. But, in order to do that,
we'll need to emulate MI sync on top of an async target. That means
we'll have yet another combination to care for in the testsuite.
Rather than making the testsuite cope with all these differences, I
thought it better to just fix GDB to always have the complete output,
no matter whether it's in sync or async mode.
This is all related to interpreter-exec, and the corresponding uiout
switching. (Typing a CLI command directly in MI is shorthand for
running it through -interpreter-exec console.)
In sync mode, when a CLI command is active, normal_stop is called when
the current interpreter and uiout are CLI's. So print_XXX_reason
prints the stop reason to CLI uiout (only), and we don't show it in
MI.
In async mode the stop event is processed when we're back in the MI
interpreter, so the stop reason is printed directly to the MI uiout.
Fix this by making run control event printing roughly independent of
whatever is the current interpreter or uiout. That is, move these
prints to interpreter observers, that know whether to print or be
quiet, and if printing, which uiout to print to. In the case of the
console/tui interpreters, only print if the top interpreter. For MI,
always print.
Breakpoint hits / normal stops are already handled similarly -- MI has
a normal_stop observer that prints the event to both MI and the CLI,
though that could be cleaned up further in the direction of this
patch.
This also makes all of:
(gdb) foo
and
(gdb) interpreter-exec MI "-exec-foo"
and
(gdb)
-exec-foo
and
(gdb)
-interpreter-exec console "foo"
print as expected.
Tested on x86_64 Fedora 20, sync and async modes.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
PR gdb/13860
* cli/cli-interp.c: Include infrun.h and observer.h.
(cli_uiout, cli_interp): New globals.
(cli_on_signal_received, cli_on_end_stepping_range)
(cli_on_signal_exited, cli_on_exited, cli_on_no_history): New
functions.
(cli_interpreter_init): Install them as 'end_stepping_range',
'signal_received' 'signal_exited', 'exited' and 'no_history'
observers.
(_initialize_cli_interp): Remove cli_interp local.
* infrun.c (handle_inferior_event): Call the several stop reason
observers instead of printing the stop reason directly.
(end_stepping_range): New function.
(print_end_stepping_range_reason, print_signal_exited_reason)
(print_exited_reason, print_signal_received_reason)
(print_no_history_reason): Make static, and add an uiout
parameter. Print to that instead of to CURRENT_UIOUT.
* infrun.h (print_end_stepping_range_reason)
(print_signal_exited_reason, print_exited_reason)
(print_signal_received_reason print_no_history_reason): New
declarations.
* mi/mi-common.h (struct mi_interp): Rename 'uiout' field to
'mi_uiout'.
<cli_uiout>: New field.
* mi/mi-interp.c (mi_interpreter_init): Adjust. Create the new
uiout for CLI output. Install 'signal_received',
'end_stepping_range', 'signal_exited', 'exited' and 'no_history'
observers.
(find_mi_interpreter, mi_interp_data, mi_on_signal_received)
(mi_on_end_stepping_range, mi_on_signal_exited, mi_on_exited)
(mi_on_no_history): New functions.
(ui_out_free_cleanup): Delete function.
(mi_on_normal_stop): Don't allocate a new uiout for CLI output,
instead use the one already stored in the MI interpreter data.
(mi_ui_out): Adjust.
* tui/tui-interp.c: Include infrun.h and observer.h.
(tui_interp): New global.
(tui_on_signal_received, tui_on_end_stepping_range)
(tui_on_signal_exited, tui_on_exited)
(tui_on_no_history): New functions.
(tui_init): Install them as 'end_stepping_range',
'signal_received' 'signal_exited', 'exited' and 'no_history'
observers.
(_initialize_tui_interp): Delete tui_interp local.
gdb/doc/
2014-05-29 Pedro Alves <palves@redhat.com>
PR gdb/13860
* observer.texi (signal_received, end_stepping_range)
(signal_exited, exited, no_history): New observer subjects.
gdb/testsuite/
2014-05-29 Pedro Alves <palves@redhat.com>
PR gdb/13860
* gdb.mi/mi-cli.exp: Always expect "end-stepping-range" stop
reason, even in sync mode.
|
|
linux_nat_resume is not considering that linux_ops->to_resume may throw:
/* Mark LWP as not stopped to prevent it from being continued by
linux_nat_resume_callback. */
lp->stopped = 0;
if (resume_many)
iterate_over_lwps (ptid, linux_nat_resume_callback, NULL);
If something within linux_nat_resume_callback throws, GDB leaves the
lwp_info as if the inferior was resumed, while it actually wasn't.
A couple examples, there are possibly others:
- i386_linux_resume calls target_read which calls QUIT.
- if the actual ptrace resumption fails in inf_ptrace_resume,
perror_with_name is called.
If the user tries to kill the inferior at this point (or quit, which
offers to kill), GDB locks up trying to stop the lwp -- if it is
already stopped no new waitpid event gets generated for it.
Fix this by setting the stopped flag earlier, as soon as we collect a
stop event with waitpid, and clearing it always only after resuming
the lwp successfully.
Tested on x86_64 Fedora 20. Confirmed the lock-up disappears using a
local hack that forces an error in inf_ptrace_resume.
Also fixes a little "set debug lin-lwp" annoyance. Currently we always see:
Continuing.
LLR: Preparing to resume process 6802, 0, inferior_ptid Thread 0x7ffff7fc7740 (LWP 6802)
^^^^^^^^
RC: Resuming sibling Thread 0x7ffff77c5700 (LWP 6807), 0, resume
RC: Resuming sibling Thread 0x7ffff7fc6700 (LWP 6806), 0, resume
RC: Not resuming sibling Thread 0x7ffff7fc7740 (LWP 6802) (not stopped)
^^^^^^^^^^^^^^^^^^^^^^^
LLR: PTRACE_CONT process 6802, 0 (resume event thread)
This patch gets rid of the "Not resuming sibling" line.
2014-05-29 Pedro Alves <palves@redhat.com>
PR gdb/15713
* linux-nat.c (linux_nat_resume_callback): Rename the second
parameter to 'except'. Skip LP if it points to EXCEPT.
(linux_nat_resume): Don't mark the event lwp as not stopped
before resuming sibling lwps. Instead ask
linux_nat_resume_callback to skip the event lwp. Mark it as not
stopped after actually resuming it.
(linux_handle_syscall_trap): Mark the lwp as not stopped after
resuming it.
(wait_lwp): Mark the lwp as stopped here.
(stop_wait_callback): Mark the lwp as not stopped right after
resuming it. Don't mark lwps as stopped here.
(linux_nat_filter_event): Mark the lwp as stopped earlier.
(linux_nat_wait_1): Don't mark dead lwps as stopped here.
|
|
If one sets a breakpoint with a condition that involves calling a
function in the inferior, and then the condition evaluates false, GDB
outputs one *running event for each time the program hits the
breakpoint. E.g.,
$ gdb return-false -i=mi
(gdb)
start
...
(gdb)
b 14 if return_false ()
&"b 14 if return_false ()\n"
~"Breakpoint 2 at 0x4004eb: file return-false.c, line 14.\n"
...
^done
(gdb)
c
&"c\n"
~"Continuing.\n"
^running
*running,thread-id=(...)
(gdb)
*running,thread-id=(...)
*running,thread-id=(...)
*running,thread-id=(...)
*running,thread-id=(...)
*running,thread-id=(...)
... repeat forever ...
An easy way a user can trip on this is with a dprintf with "set
dprintf-style call". In that case, a dprintf is just a breakpoint
that when hit GDB calls the printf function in the inferior, and then
resumes it, just like the case above.
If the breakpoint/dprintf is set in a loop, then these spurious events
can potentially slow down a frontend much, if it decides to refresh
its GUI whenever it sees this event (Eclipse is one such case).
When we run an infcall, we pretend we don't actually run the inferior.
This is already handled for the usual case of calling a function
directly from the CLI:
(gdb)
p return_false ()
&"p return_false ()\n"
~"$1 = 0"
~"\n"
^done
(gdb)
Note no *running, nor *stopped events. That's handled by:
static void
mi_on_resume (ptid_t ptid)
{
...
/* Suppress output while calling an inferior function. */
if (tp->control.in_infcall)
return;
and equivalent code on normal_stop.
However, in the cases of the PR, after finishing the infcall there's
one more resume, and mi_on_resume doesn't know that it should suppress
output then too, somehow.
The "running/stopped" state is a high level user/frontend state.
Internal stops are invisible to the frontend. If follows from that
that we should be setting the thread to running at a higher level
where we still know the set of threads the user _intends_ to resume.
Currently we mark a thread as running from within target_resume, a low
level target operation. As consequence, today, if we resume a
multi-threaded program while stopped at a breakpoint, we see this:
-exec-continue
^running
*running,thread-id="1"
(gdb)
*running,thread-id="all"
The first *running was GDB stepping over the breakpoint, and the
second is GDB finally resuming everything.
Between those two *running's, threads other than "1" still have their
state set to stopped. That's bogus -- in async mode, this opens a
tiny window between both resumes where the user might try to run
another execution command to threads other than thread 1, and very
much confuse GDB.
That is, the "step" below should fail the "step", complaining that the
thread is running:
(gdb) c -a &
(gdb) thread 2
(gdb) step
IOW, threads that GDB happens to not resume immediately (say, because
it needs to step over a breakpoint) shall still be marked as running.
Then, if we move marking threads as running to a higher layer,
decoupled from target_resume, plus skip marking threads as running
when running an infcall, the spurious *running events disappear,
because there will be no state transitions at all.
I think we might end up adding a new thread state -- THREAD_INFCALL or
some such, however since infcalls are always synchronous today, I
didn't find a need. There's no way to execute a CLI/MI command
directly from the prompt if some thread is running an infcall.
Tested on x86_64 Fedora 20.
gdb/
2014-05-29 Pedro Alves <palves@redhat.com>
PR PR15693
* infrun.c (resume): Determine how much to resume depending on
whether the caller wanted a step, not whether we can hardware step
the target. Mark all threads that we intend to run as running,
unless we're calling an inferior function.
(normal_stop): If the thread is running an infcall, don't finish
thread state.
* target.c (target_resume): Don't mark threads as running here.
gdb/testsuite/
2014-05-29 Pedro Alves <palves@redhat.com>
Hui Zhu <hui@codesourcery.com>
PR PR15693
* gdb.mi/mi-condbreak-call-thr-state-mt.c: New file.
* gdb.mi/mi-condbreak-call-thr-state-st.c: New file.
* gdb.mi/mi-condbreak-call-thr-state.c: New file.
* gdb.mi/mi-condbreak-call-thr-state.exp: New file.
|
|
This patch removes support for the "set/show remotebaud" command,
which were deprecated in GDB 7.7, and should be now be removed
ahead of cutting the GDB 7.8 branch.
gdb/ChangeLog:
* serial.c (_initialize_serial): Remove support for
the "set remotebaud" and "show remotebaud" commands.
* NEWS: Add entry documenting the removal of that command.
gdb/testsuite/ChangeLog:
* config/monitor.exp (gdb_target_monitor): Replace use of
"set remotebaud" by "set serial baud".
|
|
"unsed" -> "used"
gdb:
2014-05-28 Yao Qi <yao@codesourcery.com>
* charset.c: Fix typo in comments.
|
|
2014-05-27 Gary Benson <gbenson@redhat.com>
* utils.c (internal_vproblem): Prompt for a bug report.
|
|
* guile/scm-arch.c (arscm_mark_arch_smob):
* guile/scm-block.c (bkscm_mark_block_smob)
(bkscm_mark_block_syms_progress_smob):
* guile/scm-breakpoint.c (bpscm_mark_breakpoint_smob):
* guile/scm-exception.c (exscm_mark_exception_smob):
* guile/scm-frame.c (frscm_mark_frame_smob):
* guile/scm-iterator.c (itscm_mark_iterator_smob):
* guile/scm-lazy-string.c (lsscm_mark_lazy_string_smob):
* guile/scm-objfile.c (ofscm_mark_objfile_smob):
* guile/scm-pretty-print.c (ppscm_mark_pretty_printer_smob)
(ppscm_mark_pretty_printer_worker_smob):
* guile/scm-symbol.c (syscm_mark_symbol_smob):
* guile/scm-symtab.c (stscm_mark_symtab_smob, stscm_mark_sal_smob):
* guile/scm-type.c (tyscm_mark_type_smob, tyscm_mark_field_smob):
* guile/scm-value.c (vlscm_mark_value_smob): Remove unnecessary
mark functions.
* guile/scm-symtab.c (stscm_free_sal_smob): Remove unnecessary free
function.
|
|
* guile/guile-internal.h (GDB_SMOB_HEAD): Replace properties with
empty_base_class. All uses updated.
(gdbscm_mark_gsmob, gdbscm_mark_chained_gsmob)
(gdbscm_mark_eqable_gsmob): Remove these now-unneeded functions.
Adapt all callers.
* guile/scm-gsmob.c (gdbscm_mark_gsmob)
(gdbscm_mark_chained_gsmob, gdbscm_mark_eqable_gsmob): Remove.
(gdbscm_gsmob_property, gdbscm_set_gsmob_property_x)
(gdbscm_gsmob_has_property_p, add_property_name)
(gdbscm_gsmob_properties): Remove, and remove them from gsmob_functions.
* guile/lib/gdb.scm (gdb-object-property, set-gdb-object-property)
(gdb-object-has-property?, gdb-object-properties): Remove.
(gdb-object-kind): Renamed from gsmob-kind.
doc/
* guile.texi (GDB Scheme Data Types): Remove documentation for
removed interfaces. Update spelling of gdb-object-kind.
testsuite/
* gdb.guile/scm-breakpoint.exp:
* gdb.guile/scm-gsmob.exp: Update to use plain old object
properties instead of gdb-object-properties.
|
|
|
|
|
|
* configure.ac (try_guile_versions): Allow building with guile 2.2.
* configure: Regenerate.
|
|
|
|
When I run no-thread-db.exp, the breakpoint is set on line 26.
However, the breakpoint is set to line 26 of dl-start.S rather than
no-thread-db.c, which is not intended.
(gdb) monitor set libthread-db-search-path /foo/bar^M
libthread-db-search-path set to `/foo/bar'^M
(gdb) PASS: gdb.server/no-thread-db.exp: libthread-db is now unresolvable
break 26^M
Breakpoint 1 at 0x48018078: file ../sysdeps/powerpc/powerpc32/dl-start.S, line 26.^M
(gdb) continue^M
Continuing.
This patch is to change the breakpoint setting with source file
specified, then it is correct now.
gdb/testsuite:
2014-05-26 Yao Qi <yao@codesourcery.com>
* gdb.server/no-thread-db.exp: Specify source file name
explicitly when setting a breakpoint.
|
|
gdb/doc/guile.texi (Types In Guile, Basic Guile, Frames In Guile)
(Breakpoints In Guile, Guile Printing Module)
(Guile Exception Handling, Values From Inferior In Guile)
(Objfiles In Guile, Breakpoints In Guile, Memory Ports in Guile):
Don't use @var at the beginning of a sentence.
gdb/doc/gdb.texinfo (Frame Filter Management, Trace Files)
(C Operators, Ada Tasks, Calling, Bootstrapping, ARM)
(PowerPC Embedded, Define, Annotations for Running)
(IPA Protocol Commands, Packets, General Query Packets)
(Tracepoint Packets, Notification Packets, Environment)
(Inferiors and Programs, Set Breaks, Set Catchpoints)
(Continuing and Stepping, Signals, Thread-Specific Breakpoints)
(Frames, Backtrace, Selection, Expressions, Registers)
(Trace State Variables, Built-In Func/Proc, Signaling, Files)
(Numbers, GDB/MI Async Records, GDB/MI Data Manipulation)
(Source Annotations, Using JIT Debug Info Readers, Packets)
(Stop Reply Packets, Host I/O Packets)
(Target Description Format): Don't use @var at the beginning of a
sentence.
gdb/doc/python.texi (Basic Python, Types In Python)
(Commands In Python, Frames In Python, Line Tables In Python)
(Breakpoints In Python, gdb.printing, gdb.types)
(Type Printing API): Don't use @var at the beginning of a
sentence.
|
|
A recent change to glibc removed asm/ptrace.h from user.h for AArch64.
This meant that cross-native builds of gdbserver using trunk glibc broke
because linux-aarch64-low.c because user_hwdebug_state couldn't be found.
This is like commit #036cd38182bde32d8297b630cd5c861d53b8949e
2014-05-23 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
* linux-aarch64-low.c (asm/ptrace.h): Include.
|
|
When loading symbols for the vdso, also add its sections to target_sections.
This fixes an issue with record btrace where vdso instructions could not be
disassembled during replay.
* symfile-mem.c (symbol_file_add_from_memory): Add BFD sections.
testsuite/
* gdb.btrace/vdso.c: New.
* gdb.btrace/vdso.exp: New.
|
|
Allow gcore's capture_command_output function to be used by other tests.
testsuite/
* gdb.base/gcore.exp (capture_command_output): Move ...
* lib/gdb.exp (capture_command_output): ... here.
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The btrace record target does not trace data. We therefore do not allow
accessing read-write memory during replay.
In some cases, this might be useful to advanced users, though, who we assume
to know what they are doing.
Add a set|show command pair to turn this memory access restriction off.
* record-btrace.c (record_btrace_allow_memory_access): Remove.
(replay_memory_access_read_only, replay_memory_access_read_write)
(replay_memory_access_types, replay_memory_access)
(set_record_btrace_cmdlist, show_record_btrace_cmdlist)
(cmd_set_record_btrace, cmd_show_record_btrace)
(cmd_show_replay_memory_access): New.
(record_btrace_xfer_partial, record_btrace_insert_breakpoint)
(record_btrace_remove_breakpoint): Replace
record_btrace_allow_memory_access with replay_memory_access.
(_initialize_record_btrace): Add commands.
* NEWS: Announce it.
testsuite/
* gdb.btrace/data.exp: Test it.
doc/
* gdb.texinfo (Process Record and Replay): Document it.
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It should clear up confusion about the args parameter to mi_run_cmd_full.
Thanks to Joel for clear formulation. I also added a comment about the
impact of use_gdb_stub.
gdb/testsuite/ChangeLog:
2014-05-22 Simon Marchi <simon.marchi@ericsson.com>
* lib/mi-support.exp (mi_run_cmd_full): Add comments.
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A recent change to glibc removed asm/ptrace.h from user.h for
AArch64. This meant that cross-native builds of gdb using trunk
glibc broke because aarch64-linux-nat.c because user_hwdebug_state
couldn't be found.
Fixed by including asm/ptrace.h like other ports.
2014-05-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
* aarch64-linux-nat.c (asm/ptrace.h): Include.
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2014-05-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
* MAINTAINERS (Write After Approval): Move self back from
paper trail.
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