2014-05-20 07:45:54 +02:00
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2014-05-26 Yao Qi <yao@codesourcery.com>
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* gdb.server/no-thread-db.exp: Specify source file name
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explicitly when setting a breakpoint.
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2014-04-02 09:54:11 +02:00
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2014-05-23 Markus Metzger <markus.t.metzger@intel.com>
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* gdb.btrace/vdso.c: New.
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* gdb.btrace/vdso.exp: New.
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2014-05-20 09:48:43 +02:00
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2014-05-23 Markus Metzger <markus.t.metzger@intel.com>
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* gdb.base/gcore.exp (capture_command_output): Move ...
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* lib/gdb.exp (capture_command_output): ... here.
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2014-03-05 15:38:11 +01:00
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2014-05-23 Markus Metzger <markus.t.metzger@intel.com>
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* gdb.btrace/data.exp: Test memory access during btrace replay.
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2014-05-22 20:01:46 +02:00
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2014-05-22 Simon Marchi <simon.marchi@ericsson.com>
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* lib/mi-support.exp (mi_run_cmd_full): Add comments.
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PR gdb/13860: don't lose '-interpreter-exec console EXECUTION_COMMAND''s output in async mode.
The other part of PR gdb/13860 is about console execution commands in
MI getting their output half lost. E.g., take the finish command,
executed on a frontend's GDB console:
sync:
finish
&"finish\n"
~"Run till exit from #0 usleep (useconds=10) at ../sysdeps/unix/sysv/linux/usleep.c:27\n"
^running
*running,thread-id="1"
(gdb)
~"0x00000000004004d7 in foo () at stepinf.c:6\n"
~"6\t usleep (10);\n"
~"Value returned is $1 = 0\n"
*stopped,reason="function-finished",frame={addr="0x00000000004004d7",func="foo",args=[],file="stepinf.c",fullname="/home/pedro/gdb/tests/stepinf.c",line="6"},thread-id="1",stopped-threads="all",core="1"
async:
finish
&"finish\n"
~"Run till exit from #0 usleep (useconds=10) at ../sysdeps/unix/sysv/linux/usleep.c:27\n"
^running
*running,thread-id="1"
(gdb)
*stopped,reason="function-finished",frame={addr="0x00000000004004d7",func="foo",args=[],file="stepinf.c",fullname="/home/pedro/gdb/tests/stepinf.c",line="6"},gdb-result-var="$1",return-value="0",thread-id="1",stopped-threads="all",core="0"
Note how all the "Value returned" etc. output is missing in async mode.
The same happens with e.g., catchpoints:
=breakpoint-modified,bkpt={number="1",type="catchpoint",disp="keep",enabled="y",what="22016",times="1"}
~"\nCatchpoint "
~"1 (forked process 22016), 0x0000003791cbd8a6 in __libc_fork () at ../nptl/sysdeps/unix/sysv/linux/fork.c:131\n"
~"131\t pid = ARCH_FORK ();\n"
*stopped,reason="fork",disp="keep",bkptno="1",newpid="22016",frame={addr="0x0000003791cbd8a6",func="__libc_fork",args=[],file="../nptl/sysdeps/unix/sysv/linux/fork.c",fullname="/usr/src/debug/glibc-2.14-394-g8f3b1ff/nptl/sysdeps/unix/sysv/linux/fork.c",line="131"},thread-id="1",stopped-threads="all",core="0"
where all those ~ lines are missing in async mode, or just the "step"
current line indication:
s
&"s\n"
^running
*running,thread-id="all"
(gdb)
~"13\t foo ();\n"
*stopped,frame={addr="0x00000000004004ef",func="main",args=[{name="argc",value="1"},{name="argv",value="0x7fffffffdd78"}],file="stepinf.c",fullname="/home/pedro/gdb/tests/stepinf.c",line="13"},thread-id="1",stopped-threads="all",core="3"
(gdb)
Or in the case of the PRs example, the "Stopped due to shared library
event" note:
start
&"start\n"
~"Temporary breakpoint 1 at 0x400608: file ../../../src/gdb/testsuite/gdb.mi/solib-main.c, line 21.\n"
=breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400608",func="main",file="../../../src/gdb/testsuite/gdb.mi/solib-main.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/solib-main.c",line="21",times="0",original-location="main"}
~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n"
=thread-group-started,id="i1",pid="21990"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
(gdb)
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
~"Stopped due to shared library event (no libraries added or removed)\n"
*stopped,reason="solib-event",thread-id="1",stopped-threads="all",core="3"
(gdb)
IMO, if you're typing execution commands in a frontend's console, you
expect to see their output. Indeed it's what you get in sync mode. I
think async mode should do the same. Deciding what to mirror to the
console wrt to breakpoints and random stops gets messy real fast.
E.g., say "s" trips on a breakpoint. We'd clearly want to mirror the
event to the console in this case. But what about more complicated
cases like "s&; thread n; s&", and one of those steps spawning a new
thread, and that thread hitting a breakpoint? It's impossible in
general to track whether the thread had any relation to the commands
that had been executed. So I think we should just simplify and always
mirror breakpoints and random events to the console.
Notes:
- mi->out is the same as gdb_stdout when MI is the current
interpreter. I think that referring to that directly is cleaner.
An earlier revision of this patch made the changes that are now
done in mi_on_normal_stop directly in infrun.c:normal_stop, and so
not having an obvious place to put the new uiout by then, and not
wanting to abuse CLI's uiout, I made a temporary uiout when
necessary.
- Hopefuly the rest of the patch is more or less obvious given the
comments added.
Tested on x86_64 Fedora 20, no regressions.
2014-05-21 Pedro Alves <palves@redhat.com>
PR gdb/13860
* gdbthread.h (struct thread_control_state): New field
`command_interp'.
* infrun.c (follow_fork): Copy the new thread control field to the
child fork thread.
(clear_proceed_status_thread): Clear the new thread control field.
(proceed): Set the new thread control field.
* interps.h (command_interp): Declare.
* interps.c (command_interpreter): New global.
(command_interp): New function.
(interp_exec): Set `command_interpreter' while here.
* cli-out.c (cli_uiout_dtor): New function.
(cli_ui_out_impl): Install it.
* mi/mi-interp.c: Include cli-out.h.
(mi_cmd_interpreter_exec): Add comment.
(restore_current_uiout_cleanup): New function.
(ui_out_free_cleanup): New function.
(mi_on_normal_stop): If finishing an execution command started by
a CLI command, or any kind of breakpoint-like event triggered,
print the stop event to the output (CLI) stream.
* mi/mi-out.c (mi_ui_out_impl): Install NULL `dtor' handler.
2014-05-21 Pedro Alves <palves@redhat.com>
PR gdb/13860
* gdb.mi/mi-cli.exp (line_callee4_next_step): New global.
(top level): Test that output related to execution commands is
sent to the console with CLI commands, but not with MI commands.
Test that breakpoint events are always mirrored to the console.
Also expect the new source line to be output after a "next" in
async mode too. Make it a pass/fail test.
* gdb.mi/mi-solib.exp: Test that the CLI solib event note is
output.
* lib/mi-support.exp (mi_gdb_expect_cli_output): New procedure.
2014-03-11 21:31:36 +01:00
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2014-05-21 Pedro Alves <palves@redhat.com>
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PR gdb/13860
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* gdb.mi/mi-cli.exp (line_callee4_next_step): New global.
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(top level): Test that output related to execution commands is
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sent to the console with CLI commands, but not with MI commands.
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Test that breakpoint events are always mirrored to the console.
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Also expect the new source line to be output after a "next" in
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async mode too. Make it a pass/fail test.
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* gdb.mi/mi-solib.exp: Test that the CLI solib event note is
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output.
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* lib/mi-support.exp (mi_gdb_expect_cli_output): New procedure.
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PR gdb/13860: make -interpreter-exec console "list" behave more like "list".
I noticed that "list" behaves differently in CLI vs MI. Particularly:
$ ./gdb -nx -q ./testsuite/gdb.mi/mi-cli
Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli...done.
(gdb) start
Temporary breakpoint 1 at 0x40054d: file ../../../src/gdb/testsuite/gdb.mi/basics.c, line 62.
Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli
Temporary breakpoint 1, main () at ../../../src/gdb/testsuite/gdb.mi/basics.c:62
62 callee1 (2, "A string argument.", 3.5);
(gdb) list
57 {
58 }
59
60 main ()
61 {
62 callee1 (2, "A string argument.", 3.5);
63 callee1 (2, "A string argument.", 3.5);
64
65 do_nothing (); /* Hello, World! */
66
(gdb)
Note the list started at line 57. IOW, the program stopped at line
62, and GDB centered the list on that.
compare with:
$ ./gdb -nx -q ./testsuite/gdb.mi/mi-cli -i=mi
=thread-group-added,id="i1"
~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli..."
~"done.\n"
(gdb)
start
&"start\n"
...
~"\nTemporary breakpoint "
~"1, main () at ../../../src/gdb/testsuite/gdb.mi/basics.c:62\n"
~"62\t callee1 (2, \"A string argument.\", 3.5);\n"
*stopped,reason="breakpoint-hit",disp="del",bkptno="1",frame={addr="0x000000000040054d",func="main",args=[],file="../../../src/gdb/testsuite/gdb.mi/basics.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/basics.c",line="62"},thread-id="1",stopped-threads="all",core="0"
=breakpoint-deleted,id="1"
(gdb)
-interpreter-exec console list
~"62\t callee1 (2, \"A string argument.\", 3.5);\n"
~"63\t callee1 (2, \"A string argument.\", 3.5);\n"
~"64\t\n"
~"65\t do_nothing (); /* Hello, World! */\n"
~"66\t\n"
~"67\t callme (1);\n"
~"68\t callme (2);\n"
~"69\t\n"
~"70\t return 0;\n"
~"71\t}\n"
^done
(gdb)
Here the list starts at line 62, where the program was stopped.
This happens because print_stack_frame, called from both normal_stop
and mi_on_normal_stop, is the function responsible for setting the
current sal from the selected frame, overrides the PRINT_WHAT
argument, and only after that does it decide whether to center the
current sal line or not, based on the overridden value, and it will
always decide false.
(The print_stack_frame call in mi_on_normal_stop is a little different
from the call in normal_stop, in that it is an unconditional
SRC_AND_LOC call. A future patch will make those uniform.)
A previous version of this patch made MI uniform with CLI here, by
making print_stack_frame also center when MI is active. That changed
the output of a "list" command in mi-cli.exp, to expect line 57
instead of 62, as per the example above.
However, looking deeper, that list in question is the first "list"
after the program stops, and right after the stop, before the "list",
the test did "set listsize 1". Let's try the same thing with the CLI:
(gdb) start
62 callee1 (2, "A string argument.", 3.5);
(gdb) set listsize 1
(gdb) list
57 {
Huh, that's unexpected. Why the 57? It's because print_stack_frame,
called in reaction to the breakpoint stop, expecting the next "list"
to show 10 lines (the listsize at the time) around line 62, sets the
lines listed range to 57-67 (62 +/- 5). If the user changes the
listsize before "list", why would we still show that range? Looks
bogus to me.
So the fix for this whole issue should be delay trying to center the
listing to until actually listing, so that the correct listsize can be
taken into account. This makes MI and CLI uniform too, as it deletes
the center code from print_stack_frame.
A series of tests are added to list.exp to cover this. mi-cli.exp was
after all correct all along, but it now gains an additional test that
lists lines with listsize 10, to ensure the centering is consistent
with CLI's.
One related Python test changed related output -- it's a test that
prints the line number after stopping for a breakpoint, similar to the
new list.exp tests. Previously we'd print the stop line minus 5 (due
to the premature centering), now we print the stop line. I think
that's a good change.
Tested on x86_64 Fedora 20.
gdb/
2014-05-21 Pedro Alves <palves@redhat.com>
* cli/cli-cmds.c (list_command): Handle the first "list" after the
current source line having changed.
* frame.h (set_current_sal_from_frame): Remove 'center' parameter.
* infrun.c (normal_stop): Adjust call to
set_current_sal_from_frame.
* source.c (clear_lines_listed_range): New function.
(set_current_source_symtab_and_line, identify_source_line): Clear
the lines listed range.
(line_info): Handle the first "info line" after the current source
line having changed.
* stack.c (print_stack_frame): Remove center handling.
(set_current_sal_from_frame): Remove 'center' parameter. Don't
center sal.line.
gdb/testsuite/
2014-05-21 Pedro Alves <palves@redhat.com>
* gdb.base/list.exp (build_pattern, test_list): New procedures.
Use them to test variations of "list" after reaching a breakpoint.
* gdb.mi/mi-cli.exp (line_main_callme_2): New global.
Test "list" with listsize 10 after reaching a breakpoint.
* gdb.python/python.exp (decode_line current location line
number): Adjust expected line number.
2014-05-22 00:15:27 +02:00
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2014-05-21 Pedro Alves <palves@redhat.com>
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* gdb.base/list.exp (build_pattern, test_list): New procedures.
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Use them to test variations of "list" after reaching a breakpoint.
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* gdb.mi/mi-cli.exp (line_main_callme_2): New global.
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Test "list" with listsize 10 after reaching a breakpoint.
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* gdb.python/python.exp (decode_line current location line
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number): Adjust expected line number.
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2014-05-21 23:22:48 +02:00
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2014-05-21 Simon Marchi <simon.marchi@ericsson.com>
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* lib/mi-support.exp (mi_run_cmd_full): Revert to original
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behavior for $args, pass it directly to "run".
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2014-05-21 21:34:57 +02:00
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2014-05-21 Maciej W. Rozycki <macro@codesourcery.com>
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* lib/gdb.exp (default_gdb_init): Bump `match_max' up from
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30000 to 65536.
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Allow making GDB not automatically connect to the native target.
Sometimes it's useful to be able to disable the automatic connection
to the native target. E.g., sometimes GDB disconnects from the
extended-remote target I was debugging, without me noticing it, and
then I do "run". That starts the program locally, and only after a
little head scratch session do I figure out the program is running
locally instead of remotely as intended. Same thing with "attach",
"info os", etc.
With the patch, we now can have this instead:
(gdb) set auto-connect-native-target off
(gdb) target extended-remote :9999
...
*gdb disconnects*
(gdb) run
Don't know how to run. Try "help target".
To still be able to connect to the native target with
auto-connect-native-target set to off, I've made "target native" work
instead of erroring out as today.
Before:
(gdb) target native
Use the "run" command to start a native process.
After:
(gdb) target native
Done. Use the "run" command to start a process.
(gdb) maint print target-stack
The current target stack is:
- native (Native process)
- exec (Local exec file)
- None (None)
(gdb) run
Starting program: ./a.out
...
I've also wanted this for the testsuite, when running against the
native-extended-gdbserver.exp board (runs against gdbserver in
extended-remote mode). With a non-native-target board, it's always a
bug to launch a program with the native target. Turns out we still
have one such case this patch catches:
(gdb) break main
Breakpoint 1 at 0x4009e5: file ../../../src/gdb/testsuite/gdb.base/coremaker.c, line 138.
(gdb) run
Don't know how to run. Try "help target".
(gdb) FAIL: gdb.base/corefile.exp: run: with core
On the patch itself, probably the least obvious bit is the need to go
through all targets, and move the unpush_target call to after the
generic_mourn_inferior call instead of before. This is what
inf-ptrace.c does too, ever since multi-process support was added.
The reason inf-ptrace.c does things in that order is that in the
current multi-process/single-target model, we shouldn't unpush the
target if there are still other live inferiors being debugged. The
check for that is "have_inferiors ()" (a misnomer nowadays...), which
does:
have_inferiors (void)
{
for (inf = inferior_list; inf; inf = inf->next)
if (inf->pid != 0)
return 1;
It's generic_mourn_inferior that ends up clearing inf->pid, so we need
to call it before the have_inferiors check. To make all native
targets behave the same WRT to explicit "target native", I've added an
inf_child_maybe_unpush_target function that targets call instead of
calling unpush_target directly, and as that includes the
have_inferiors check, I needed to adjust the targets.
Tested on x86_64 Fedora 20, native, and also with the
extended-gdbserver board.
Confirmed a cross build of djgpp gdb still builds.
Smoke tested a cross build of Windows gdb under Wine.
Untested otherwise.
gdb/
2014-05-21 Pedro Alves <palves@redhat.com>
* inf-child.c (inf_child_ops, inf_child_explicitly_opened): New
globals.
(inf_child_open_target): New function.
(inf_child_open): Use inf_child_open_target to push the target
instead of erroring out.
(inf_child_disconnect, inf_child_close)
(inf_child_maybe_unpush_target): New functions.
(inf_child_target): Install inf_child_disconnect and
inf_child_close. Store a pointer to the returned object.
* inf-child.h (inf_child_open_target, inf_child_maybe_unpush): New
declarations.
* target.c (auto_connect_native_target): New global.
(show_default_run_target): New function.
(find_default_run_target): Return NULL if automatically connecting
to the native target is disabled.
(_initialize_target): Install set/show auto-connect-native-target.
* NEWS: Mention "set auto-connect-native-target", and "target
native".
* linux-nat.c (super_close): New global.
(linux_nat_close): Call super_close.
(linux_nat_add_target): Store a pointer to the base class's
to_close method.
* inf-ptrace.c (inf_ptrace_mourn_inferior, inf_ptrace_detach): Use
inf_child_maybe_unpush.
* inf-ttrace.c (inf_ttrace_him): Don't push the target if it is
already pushed.
(inf_ttrace_mourn_inferior): Only unpush the target after mourning
the inferior. Use inf_child_maybe_unpush_target.
(inf_ttrace_attach): Don't push the target if it is already
pushed.
(inf_ttrace_detach): Use inf_child_maybe_unpush_target.
* darwin-nat.c (darwin_mourn_inferior): Only unpush the target
after mourning the inferior. Use inf_child_maybe_unpush_target.
(darwin_attach_pid): Don't push the target if it is already
pushed.
* gnu-nat.c (gnu_mourn_inferior): Only unpush the target after
mourning the inferior. Use inf_child_maybe_unpush_target.
(gnu_detach): Use inf_child_maybe_unpush_target.
* go32-nat.c (go32_create_inferior): Don't push the target if it
is already pushed.
(go32_mourn_inferior): Use inf_child_maybe_unpush_target.
* nto-procfs.c (procfs_is_nto_target): Adjust comment.
(procfs_open): Rename to ...
(procfs_open_1): ... this. Add target_ops parameter. Adjust
comments. Can target_preopen before changing node. Call
inf_child_open_target to push the target explicitly.
(procfs_attach): Don't push the target if it is already pushed.
(procfs_detach): Use inf_child_maybe_unpush_target.
(procfs_create_inferior): Don't push the target if it is already
pushed.
(nto_native_ops): New global.
(procfs_open): Reimplement.
(procfs_native_open): New function.
(init_procfs_targets): Install procfs_native_open as to_open of
"target native". Store a pointer to the "native" target in
nto_native_ops.
* procfs.c (procfs_attach): Don't push the target if it is already
pushed.
(procfs_detach): Use inf_child_maybe_unpush_target.
(procfs_mourn_inferior): Only unpush the target after mourning the
inferior. Use inf_child_maybe_unpush_target.
(procfs_init_inferior): Don't push the target if it is already
pushed.
* windows-nat.c (do_initial_windows_stuff): Don't push the target
if it is already pushed.
(windows_detach): Use inf_child_maybe_unpush_target.
(windows_mourn_inferior): Only unpush the target after mourning
the inferior. Use inf_child_maybe_unpush_target.
gdb/doc/
2014-05-21 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Starting): Document "set/show
auto-connect-native-target".
(Target Commands): Document "target native".
gdb/testsuite/
2014-05-21 Pedro Alves <palves@redhat.com>
* boards/gdbserver-base.exp (GDBFLAGS): Set to "set
auto-connect-native-target off".
* gdb.base/auto-connect-native-target.c: New file.
* gdb.base/auto-connect-native-target.exp: New file.
2014-05-21 19:30:47 +02:00
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2014-05-21 Pedro Alves <palves@redhat.com>
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* boards/gdbserver-base.exp (GDBFLAGS): Set to "set
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auto-connect-native-target off".
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* gdb.base/auto-connect-native-target.c: New file.
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* gdb.base/auto-connect-native-target.exp: New file.
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2014-05-21 19:30:43 +02:00
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2014-05-21 Pedro Alves <palves@redhat.com>
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* gdb.base/default.exp: Test "target native" instead of "target
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child".
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2014-05-21 16:00:05 +02:00
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2014-05-21 Mark Wielaard <mjw@redhat.com>
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* gdb.cp/var-tag.exp (do_global_tests): Handle underlying type.
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2014-05-21 16:25:53 +02:00
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2014-05-21 Jan Kratochvil <jan.kratochvil@redhat.com>
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Fix TLS access for -static -pthread.
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* gdb.threads/staticthreads.c <HAVE_TLS> (tlsvar): New.
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<HAVE_TLS> (thread_function, main): Initialize it.
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* gdb.threads/staticthreads.exp: Try gdb_compile_pthreads for $have_tls.
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Add clean_restart.
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<$have_tls != "">: Check TLSVAR.
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2014-05-21 14:58:16 +02:00
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2014-05-21 Pedro Alves <palves@redhat.com>
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* gdb.base/dcache-line-read-error.c: New.
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* gdb.base/dcache-line-read-error.exp: New.
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Make compare-sections work against all targets; add compare-sections [-r] tests.
This does two things:
1. Adds a test.
Recently compare-sections got a new "-r" switch, but given no test
existed for compare-sections, the patch was allowed in with no
testsuite addition. This now adds a test for both compare-sections
and compare-sections -r.
2. Makes the compare-sections command work against all targets.
Currently, compare-sections only works with remote targets, and only
those that support the qCRC packet. The patch makes it so that if the
target doesn't support accelerating memory verification, then GDB
falls back to comparing memory itself. This is of course slower, but
it's better than nothing, IMO. While testing against extended-remote
GDBserver I noticed that we send the qCRC request to the target if
we're connected, but not yet running a program. That can't work of
course -- the patch fixes that. This all also goes in the direction
of bridging the local/remote parity gap.
I didn't decouple 1. from 2., because that would mean that the test
would need to handle the case of the target not supporting the
command.
Tested on x86_64 Fedora 17, native, remote GDBserver, and
extended-remote GDBserver. I also hack-disabled qCRC support to make
sure the fallback paths in remote.c work.
gdb/doc/
2014-05-20 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Memory) <compare-sections>: Generalize comments to
not be remote specific. Add cross reference to the qCRC packet.
(Separate Debug Files): Update cross reference to the qCRC packet.
(General Query Packets) <qCRC packet>: Add anchor.
gdb/
2014-05-20 Pedro Alves <palves@redhat.com>
* NEWS: Mention that compare-sections now works with all targets.
* remote.c (PACKET_qCRC): New enum value.
(remote_verify_memory): Don't send qCRC if the target has no
execution. Use packet_support/packet_ok. If the target doesn't
support the qCRC packet, fallback to a deep memory copy.
(compare_sections_command): Say "target image" instead of "remote
executable".
(_initialize_remote): Add PACKET_qCRC to the list of config
packets that have no associated command. Extend comment.
* target.c (simple_verify_memory, default_verify_memory): New
function.
* target.h (struct target_ops) <to_verify_memory>: Default to
default_verify_memory.
(simple_verify_memory): New declaration.
* target-delegates.c: Regenerate.
gdb/testsuite/
2014-05-20 Pedro Alves <palves@redhat.com>
* gdb.base/compare-sections.c: New file.
* gdb.base/compare-sections.exp: New file.
2014-05-20 20:11:39 +02:00
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2014-05-20 Pedro Alves <palves@redhat.com>
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* gdb.base/compare-sections.c: New file.
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* gdb.base/compare-sections.exp: New file.
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[GDBserver] Make Zx/zx packet handling idempotent.
This patch fixes hardware breakpoint regressions exposed by my fix for
"PR breakpoints/7143 - Watchpoint does not trigger when first set", at
https://sourceware.org/ml/gdb-patches/2014-03/msg00167.html
The testsuite caught them on Linux/x86_64, at least. gdb.sum:
gdb.sum:
FAIL: gdb.base/hbreak2.exp: next over recursive call
FAIL: gdb.base/hbreak2.exp: backtrace from factorial(5.1)
FAIL: gdb.base/hbreak2.exp: continue until exit at recursive next test
gdb.log:
(gdb) next
Program received signal SIGTRAP, Trace/breakpoint trap.
factorial (value=4) at ../../../src/gdb/testsuite/gdb.base/break.c:113
113 if (value > 1) { /* set breakpoint 7 here */
(gdb) FAIL: gdb.base/hbreak2.exp: next over recursive call
Actually, that patch just exposed a latent issue to "breakpoints
always-inserted off" mode, not really caused it. After that patch,
GDB no longer removes breakpoints at each internal event, thus making
some scenarios behave like breakpoint always-inserted on. The bug is
easy to trigger with always-inserted on.
The issue is that since the target-side breakpoint conditions support,
if the stub/server supports evaluating breakpoint conditions on the
target side, then GDB is sending duplicate Zx packets to the target
without removing them before, and GDBserver is not really expecting
that for Z packets other than Z0/z0. E.g., with "set breakpoint
always-inserted on" and "set debug remote 1":
(gdb) b main
Sending packet: $m410943,1#ff...Packet received: 48
Breakpoint 4 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z0,410943,1#48...Packet received: OK
^^^^^^^^^^^^
(gdb) b main
Note: breakpoint 4 also set at pc 0x410943.
Sending packet: $m410943,1#ff...Packet received: 48
Breakpoint 5 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z0,410943,1#48...Packet received: OK
^^^^^^^^^^^^
(gdb) b main
Note: breakpoints 4 and 5 also set at pc 0x410943.
Sending packet: $m410943,1#ff...Packet received: 48
Breakpoint 6 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z0,410943,1#48...Packet received: OK
^^^^^^^^^^^^
(gdb) del
Delete all breakpoints? (y or n) y
Sending packet: $Z0,410943,1#48...Packet received: OK
Sending packet: $Z0,410943,1#48...Packet received: OK
Sending packet: $z0,410943,1#68...Packet received: OK
And for Z1, similarly:
(gdb) hbreak main
Sending packet: $m410943,1#ff...Packet received: 48
Hardware assisted breakpoint 4 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z1,410943,1#49...Packet received: OK
^^^^^^^^^^^^
Packet Z1 (hardware-breakpoint) is supported
(gdb) hbreak main
Note: breakpoint 4 also set at pc 0x410943.
Sending packet: $m410943,1#ff...Packet received: 48
Hardware assisted breakpoint 5 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z1,410943,1#49...Packet received: OK
^^^^^^^^^^^^
(gdb) hbreak main
Note: breakpoints 4 and 5 also set at pc 0x410943.
Sending packet: $m410943,1#ff...Packet received: 48
Hardware assisted breakpoint 6 at 0x410943: file ../../../src/gdb/gdbserver/server.c, line 3028.
Sending packet: $Z1,410943,1#49...Packet received: OK
^^^^^^^^^^^^
(gdb) del
Delete all breakpoints? (y or n) y
Sending packet: $Z1,410943,1#49...Packet received: OK
^^^^^^^^^^^^
Sending packet: $Z1,410943,1#49...Packet received: OK
^^^^^^^^^^^^
Sending packet: $z1,410943,1#69...Packet received: OK
^^^^^^^^^^^^
So GDB sent a bunch of Z1 packets, and then when finally removing the
breakpoint, only one z1 packet was sent. On the GDBserver side (with
monitor set debug-hw-points 1), in the Z1 case, we see:
$ ./gdbserver :9999 ./gdbserver
Process ./gdbserver created; pid = 8629
Listening on port 9999
Remote debugging from host 127.0.0.1
insert_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=1 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
insert_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=2 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
insert_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=3 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
insert_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=4 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
insert_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=5 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
remove_watchpoint (addr=410943, len=1, type=instruction-execute):
CONTROL (DR7): 00000101 STATUS (DR6): 00000000
DR0: addr=0x410943, ref.count=4 DR1: addr=0x0, ref.count=0
DR2: addr=0x0, ref.count=0 DR3: addr=0x0, ref.count=0
That's one insert_watchpoint call for each Z1 packet, and then one
remove_watchpoint call for the z1 packet. Notice how ref.count
increased for each insert_watchpoint call, and then in the end, after
GDB told GDBserver to forget about the hardware breakpoint, GDBserver
ends with the the first debug register still with ref.count=4! IOW,
the hardware breakpoint is left armed on the target, while on the GDB
end it's gone. If the program happens to execute 0x410943 afterwards,
then the CPU traps, GDBserver reports the trap to GDB, and GDB not
having a breakpoint set at that address anymore, reports to the user a
spurious SIGTRAP.
This is exactly what is happening in the hbreak2.exp test, though in
that case, it's a shared library event that triggers a
breakpoint_re_set, when breakpoints are still inserted (because
nowadays GDB doesn't remove breakpoints while handling internal
events), and that recreates breakpoint locations, which likewise
forces breakpoint reinsertion and Zx packet resends...
That is a lot of bogus Zx duplication that should possibly be
addressed on the GDB side. GDB resends Zx packets because the way to
change the target-side condition, is to resend the breakpoint to the
server with the new condition. (That's an option in the packet: e.g.,
"Z1,410943,1;X3,220027" for "hbreak main if 0". The packets in the
examples above are shorter because the breakpoints don't have
conditions attached). GDB doesn't remove the breakpoint first before
reinserting it because that'd be bad for non-stop, as it'd open a
window where the inferior could miss the breakpoint. The conditions
actually haven't changed between the resends, but GDB isn't smart
enough to realize that.
(TBC, if the target doesn't support target-side conditions, then GDB
doesn't trigger these resends (init_bp_location calls
mark_breakpoint_location_modified, and that does nothing if condition
evaluation is on the host side. The resends are caused by the
'loc->condition_changed = condition_modified.' line.)
But, even if GDB was made smarter, GDBserver should really still
handle the resends anyway. So target-side conditions also aren't
really to blame. The documentation of the Z/z packets says:
"To avoid potential problems with duplicate packets, the operations
should be implemented in an idempotent way."
As such, we may want to fix GDB, but we should definitely fix
GDBserver. The fix is a prerequisite for target-side conditions on
hardware breakpoints anyway (and while at it, on watchpoints too).
GDBserver indeed already treats duplicate Z0 packets in an idempotent
way. mem-break.c has the concept of high-level and low-level
breakpoints, somewhat similar to GDB's split of breakpoints vs
breakpoint locations, and keeps track of multiple breakpoints
referencing the same address/location, for the case of an internal
GDBserver breakpoint or a tracepoint being set at the same address as
a GDB breakpoint. But, it only allows GDB to ever contribute one
reference to a software breakpoint location. IOW, if gdbserver sees a
Z0 packet for the same address where it already had a GDB breakpoint
set, then GDBserver won't create another high-level GDB breakpoint.
However, mem-break.c only tracks GDB Z0 breakpoints. The same logic
should apply to all kinds of Zx packets. Currently, gdbserver passes
down each duplicate Zx (other than Z0) request directly to the
target->insert_point routine. The x86 watchpoint support itself
refcounts watchpoint / hw breakpoint requests, to handle overlapping
watchpoints, and save debug registers. But that code doesn't (and
really shouldn't) handle the duplicate requests, assuming that for
each insert there will be a corresponding remove.
So the fix is to generalize mem-break.c to track all kinds of Zx
breakpoints, and filter out duplicates. As mentioned, this ends up
adding support for target-side conditions on hardware breakpoints and
watchpoints too (though GDB itself doesn't support the latter yet).
Probably the least obvious change in the patch is that it kind of
turns the breakpoint insert/remove APIs inside out. Before, the
target methods were only called for GDB breakpoints. The internal
breakpoint set/delete methods inserted memory breakpoints directly
bypassing the insert/remove target methods. That's not good when the
target should use a debug API to set software breakpoints, instead of
relying on GDBserver patching memory with breakpoint instructions, as
is the case of NTO.
Now removal/insertion of all kinds of breakpoints/watchpoints, either
internal, or from GDB, always go through the target methods. The
insert_point/remove_point methods no longer get passed a Z packet
type, but an internal/raw breakpoint type. They're also passed a
pointer to the raw breakpoint itself (note that's still opaque outside
mem-break.c), so that insert_memory_breakpoint /
remove_memory_breakpoint have access to the breakpoint's shadow
buffer. I first tried passing down a new structure based on GDB's
"struct bp_target_info" (actually with that name exactly), but then
decided against it as unnecessary complication.
As software/memory breakpoints work by poking at memory, when setting
a GDB Z0 breakpoint (but not internal breakpoints, as those can assume
the conditions are already right), we need to tell the target to
prepare to access memory (which on Linux means stop threads). If that
operation fails, we need to return error to GDB. Seeing an error, if
this is the first breakpoint of that type that GDB tries to insert,
GDB would then assume the breakpoint type is supported, but it may
actually not be. So we need to check whether the type is supported at
all before preparing to access memory. And to solve that, the patch
adds a new target->supports_z_point_type method that is called before
actually trying to insert the breakpoint.
Other than that, hopefully the change is more or less obvious.
New test added that exercises the hbreak2.exp regression in a more
direct way, without relying on a breakpoint re-set happening before
main is reached.
Tested by building GDBserver for:
aarch64-linux-gnu
arm-linux-gnueabihf
i686-pc-linux-gnu
i686-w64-mingw32
m68k-linux-gnu
mips-linux-gnu
mips-uclinux
nios2-linux-gnu
powerpc-linux-gnu
sh-linux-gnu
tilegx-unknown-linux-gnu
x86_64-redhat-linux
x86_64-w64-mingw32
And also regression tested on x86_64 Fedora 20.
gdb/gdbserver/
2014-05-20 Pedro Alves <palves@redhat.com>
* linux-aarch64-low.c (aarch64_insert_point)
(aarch64_remove_point): No longer check whether the type is
supported here. Adjust to new interface.
(the_low_target): Install aarch64_supports_z_point_type as
supports_z_point_type method.
* linux-arm-low.c (raw_bkpt_type_to_arm_hwbp_type): New function.
(arm_linux_hw_point_initialize): Take an enum raw_bkpt_type
instead of a Z packet char. Adjust.
(arm_supports_z_point_type): New function.
(arm_insert_point, arm_remove_point): Adjust to new interface.
(the_low_target): Install arm_supports_z_point_type.
* linux-crisv32-low.c (cris_supports_z_point_type): New function.
(cris_insert_point, cris_remove_point): Adjust to new interface.
Don't check whether the type is supported here.
(the_low_target): Install cris_supports_z_point_type.
* linux-low.c (linux_supports_z_point_type): New function.
(linux_insert_point, linux_remove_point): Adjust to new interface.
* linux-low.h (struct linux_target_ops) <insert_point,
remove_point>: Take an enum raw_bkpt_type instead of a char. Add
raw_breakpoint pointer parameter.
<supports_z_point_type>: New method.
* linux-mips-low.c (mips_supports_z_point_type): New function.
(mips_insert_point, mips_remove_point): Adjust to new interface.
Use mips_supports_z_point_type.
(the_low_target): Install mips_supports_z_point_type.
* linux-ppc-low.c (the_low_target): Install NULL as
supports_z_point_type method.
* linux-s390-low.c (the_low_target): Install NULL as
supports_z_point_type method.
* linux-sparc-low.c (the_low_target): Install NULL as
supports_z_point_type method.
* linux-x86-low.c (x86_supports_z_point_type): New function.
(x86_insert_point): Adjust to new insert_point interface. Use
insert_memory_breakpoint. Adjust to new
i386_low_insert_watchpoint interface.
(x86_remove_point): Adjust to remove_point interface. Use
remove_memory_breakpoint. Adjust to new
i386_low_remove_watchpoint interface.
(the_low_target): Install x86_supports_z_point_type.
* lynx-low.c (lynx_target_ops): Install NULL as
supports_z_point_type callback.
* nto-low.c (nto_supports_z_point_type): New.
(nto_insert_point, nto_remove_point): Adjust to new interface.
(nto_target_ops): Install nto_supports_z_point_type.
* mem-break.c: Adjust intro comment.
(struct raw_breakpoint) <raw_type, size>: New fields.
<inserted>: Update comment.
<shlib_disabled>: Delete field.
(enum bkpt_type) <gdb_breakpoint>: Delete value.
<gdb_breakpoint_Z0, gdb_breakpoint_Z1, gdb_breakpoint_Z2,
gdb_breakpoint_Z3, gdb_breakpoint_Z4>: New values.
(raw_bkpt_type_to_target_hw_bp_type): New function.
(find_enabled_raw_code_breakpoint_at): New function.
(find_raw_breakpoint_at): New type and size parameters. Use them.
(insert_memory_breakpoint): New function, based off
set_raw_breakpoint_at.
(remove_memory_breakpoint): New function.
(set_raw_breakpoint_at): Reimplement.
(set_breakpoint): New, based on set_breakpoint_at.
(set_breakpoint_at): Reimplement.
(delete_raw_breakpoint): Go through the_target->remove_point
instead of assuming memory breakpoints.
(find_gdb_breakpoint_at): Delete.
(Z_packet_to_bkpt_type, Z_packet_to_raw_bkpt_type): New functions.
(find_gdb_breakpoint): New function.
(set_gdb_breakpoint_at): Delete.
(z_type_supported): New function.
(set_gdb_breakpoint_1): New function, loosely based off
set_gdb_breakpoint_at.
(check_gdb_bp_preconditions, set_gdb_breakpoint): New functions.
(delete_gdb_breakpoint_at): Delete.
(delete_gdb_breakpoint_1): New function, loosely based off
delete_gdb_breakpoint_at.
(delete_gdb_breakpoint): New function.
(clear_gdb_breakpoint_conditions): Rename to ...
(clear_breakpoint_conditions): ... this. Don't handle a NULL
breakpoint.
(add_condition_to_breakpoint): Make static.
(add_breakpoint_condition): Take a struct breakpoint pointer
instead of an address. Adjust.
(gdb_condition_true_at_breakpoint): Rename to ...
(gdb_condition_true_at_breakpoint_z_type): ... this, and add
z_type parameter.
(gdb_condition_true_at_breakpoint): Reimplement.
(add_breakpoint_commands): Take a struct breakpoint pointer
instead of an address. Adjust.
(gdb_no_commands_at_breakpoint): Rename to ...
(gdb_no_commands_at_breakpoint_z_type): ... this. Add z_type
parameter. Return true if no breakpoint was found. Change debug
output.
(gdb_no_commands_at_breakpoint): Reimplement.
(run_breakpoint_commands): Rename to ...
(run_breakpoint_commands_z_type): ... this. Add z_type parameter,
and change return type to boolean.
(run_breakpoint_commands): New function.
(gdb_breakpoint_here): Also check for Z1 breakpoints.
(uninsert_raw_breakpoint): Don't try to reinsert a disabled
breakpoint. Go through the_target->remove_point instead of
assuming memory breakpoint.
(uninsert_breakpoints_at, uninsert_all_breakpoints): Uninsert
software and hardware breakpoints.
(reinsert_raw_breakpoint): Go through the_target->insert_point
instead of assuming memory breakpoint.
(reinsert_breakpoints_at, reinsert_all_breakpoints): Reinsert
software and hardware breakpoints.
(check_breakpoints, breakpoint_here, breakpoint_inserted_here):
Check both software and hardware breakpoints.
(validate_inserted_breakpoint): Assert the breakpoint is a
software breakpoint. Set the inserted flag to -1 instead of
setting shlib_disabled.
(delete_disabled_breakpoints): Adjust.
(validate_breakpoints): Only validate software breakpoints.
Adjust to inserted flag change.
(check_mem_read, check_mem_write): Skip breakpoint types other
than software breakpoints. Adjust to inserted flag change.
* mem-break.h (enum raw_bkpt_type): New enum.
(raw_breakpoint, struct process_info): Forward declare.
(Z_packet_to_target_hw_bp_type): Delete declaration.
(raw_bkpt_type_to_target_hw_bp_type, Z_packet_to_raw_bkpt_type)
(set_gdb_breakpoint, delete_gdb_breakpoint)
(clear_breakpoint_conditions): New declarations.
(set_gdb_breakpoint_at, clear_gdb_breakpoint_conditions): Delete.
(breakpoint_inserted_here): Update comment.
(add_breakpoint_condition, add_breakpoint_commands): Replace
address parameter with a breakpoint pointer parameter.
(gdb_breakpoint_here): Update comment.
(delete_gdb_breakpoint_at): Delete.
(insert_memory_breakpoint, remove_memory_breakpoint): Declare.
* server.c (process_point_options): Take a struct breakpoint
pointer instead of an address. Adjust.
(process_serial_event) <Z/z packets>: Use set_gdb_breakpoint and
delete_gdb_breakpoint.
* spu-low.c (spu_target_ops): Install NULL as
supports_z_point_type method.
* target.h: Include mem-break.h.
(struct target_ops) <prepare_to_access_memory>: Update comment.
<supports_z_point_type>: New field.
<insert_point, remove_point>: Take an enum raw_bkpt_type argument
instead of a char. Also take a raw breakpoint pointer.
* win32-arm-low.c (the_low_target): Install NULL as
supports_z_point_type.
* win32-i386-low.c (i386_supports_z_point_type): New function.
(i386_insert_point, i386_remove_point): Adjust to new interface.
(the_low_target): Install i386_supports_z_point_type.
* win32-low.c (win32_supports_z_point_type): New function.
(win32_insert_point, win32_remove_point): Adjust to new interface.
(win32_target_ops): Install win32_supports_z_point_type.
* win32-low.h (struct win32_target_ops):
<supports_z_point_type>: New method.
<insert_point, remove_point>: Take an enum raw_bkpt_type argument
instead of a char. Also take a raw breakpoint pointer.
gdb/testsuite/
2014-05-20 Pedro Alves <palves@redhat.com>
* gdb.base/break-idempotent.c: New file.
* gdb.base/break-idempotent.exp: New file.
2014-05-20 19:24:28 +02:00
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2014-05-20 Pedro Alves <palves@redhat.com>
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|
* gdb.base/break-idempotent.c: New file.
|
|
|
|
|
|
* gdb.base/break-idempotent.exp: New file.
|
|
|
|
|
|
|
2014-05-15 10:57:36 +02:00
|
|
|
|
2014-05-20 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/nohist.exp: New.
|
|
|
|
|
|
|
Set timeout for gdb.reverse/*.exp test cases
Hi,
This patch is to add a new board setting gdb_reverse_timeout, which is
used to set timeout for all gdb.reverse test cases, which are usually
very slow and cause some TIMEOUT failures, for example, on some arm
boards. We have some alternatives to this approach, but I am not
satisfied with them:
- Increase the timeout value. This is the global change, and it may
cause some delay where actual failures happen.
- Set timeout by gdb_reverse_timeout in every gdb.reverse/*.exp.
Then, we have to touch every file under gdb.reverse.
In this patch, we choose a central place to set timeout for all tests
in gdb.reverse, which is convenient.
gdb/testsuite:
2014-05-20 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (gdb_init): Set timeout if test file is under
gdb.reverse directory and gdb_reverse_timeout exists in board
setting.
* README: Document gdb_reverse_timeout.
2014-05-09 09:06:12 +02:00
|
|
|
|
2014-05-20 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (gdb_init): Set timeout if test file is under
|
|
|
|
|
|
gdb.reverse directory and gdb_reverse_timeout exists in board
|
|
|
|
|
|
setting.
|
|
|
|
|
|
* README: Document gdb_reverse_timeout.
|
|
|
|
|
|
|
gdb_init argument ARGS is a string rather than a list
The argument ARGS of gdb_init is passed from dejagnu is a string, the
test file name. In dejagnu/runtest.exp:
proc runtest { test_file_name } {
....
....
if [info exists tool] {
if { [info procs "${tool}_init"] != "" } {
${tool}_init $test_file_name;
}
}
....
}
but inn default_gdb_init (callee of gdb_init), we have
set gdb_test_file_name [file rootname [file tail [lindex $args 0]]]
In tcl, all actual arguments are combined to a list and assigned to
args. This code here isn't wrong, but unnecessary, because its caller
(proc runtest) only passes one string to it, and IMO, we don't need
such tricky tcl "args".
I doubt that "[lindex $args 0]" is to be backward compatible with old
dejagnu, but dejagnu-1.4 release started to pass $test_file_name to
${too}_init, as I showed above. dejagnu-1.4 was released in 2001, and
it should be old enough. I also tried to check whether gdb testusite
works with dejagnu-1.3 or not, but failed to build dejagnu-1.3 on my
machine. Supposing GDB testsuite requires at least dejagnu-1.4, this
change should be safe.
This patch is update default_gdb_init to treat ARGS as a string instead
of a list. Then, 'args' sounds like a list, and this patch also renames
it by 'test_file_name', to align with dejagnu.
gdb/testsuite:
2014-05-20 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (default_gdb_init): Rename argument 'args' by
'test_file_name'. Treat args as a string instead of a list.
(gdb_init): Rename argument 'args' by 'test_file_name'.
2014-05-09 05:01:07 +02:00
|
|
|
|
2014-05-20 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (default_gdb_init): Rename argument 'args' by
|
|
|
|
|
|
'test_file_name'. Treat args as a string instead of a list.
|
|
|
|
|
|
(gdb_init): Rename argument 'args' by 'test_file_name'.
|
|
|
|
|
|
|
2014-05-19 15:39:24 +02:00
|
|
|
|
2014-05-19 Jan Kratochvil <jan.kratochvil@redhat.com>
|
|
|
|
|
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|
* gdb.arch/powerpc-power.exp: New file.
|
|
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|
|
|
* gdb.arch/powerpc-power.s: New file.
|
|
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|
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|
2014-05-16 21:34:05 +02:00
|
|
|
|
2014-05-16 Doug Evans <dje@google.com>
|
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|
|
|
|
|
|
|
|
|
|
* gdb.base/Makefile.in (EXECUTABLES): Add completion.
|
2014-05-16 21:46:24 +02:00
|
|
|
|
* gdb.base/completion.exp: Check that all expected files exist
|
|
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|
|
|
before doing file completion.
|
2014-05-16 21:34:05 +02:00
|
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|
|
2014-05-16 21:15:10 +02:00
|
|
|
|
2014-05-16 Doug Evans <dje@google.com>
|
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|
* gdb.base/catch-syscall.exp (test_catch_syscall_fail_nodatadir):
|
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|
|
Update.
|
|
|
|
|
|
(do_syscall_tests_without_xml): Update.
|
|
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|
2014-05-16 15:43:47 +02:00
|
|
|
|
2014-05-16 Pedro Alves <palves@redhat.com>
|
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|
|
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|
* lib/mi-support.exp (mi_expect_stop): On timeout, say "timeout"
|
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|
|
|
instead of "unknown output after running".
|
|
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|
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|
|
2014-05-13 05:41:03 +02:00
|
|
|
|
2014-05-16 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
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|
|
* gdb.dwarf2/dw2-filename.exp: Copy file1.txt to host. Remove
|
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|
|
|
|
file1.txt from host at the end.
|
|
|
|
|
|
* gdb.dwarf2/dw2-anonymous-func.exp: Likewise.
|
|
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|
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|
|
2014-05-16 00:50:34 +02:00
|
|
|
|
2014-05-15 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/fission-reread.S: Remove directory from .dwo file path.
|
|
|
|
|
|
* gdb.dwarf2/fission-reread.exp: Set debug-file-directory before
|
|
|
|
|
|
loading file. Add test for TU lookup.
|
|
|
|
|
|
|
2014-05-13 23:37:44 +02:00
|
|
|
|
2014-05-15 Simon Marchi <simon.marchi@ericsson.com>
|
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|
|
|
|
|
|
|
|
|
* lib/mi-support.exp (mi_run_cmd_full): Set arguments by
|
|
|
|
|
|
calling "-exec-arguments" or "set args" before running the
|
|
|
|
|
|
inferior.
|
|
|
|
|
|
|
2014-05-13 23:07:33 +02:00
|
|
|
|
2014-05-15 Simon Marchi <simon.marchi@ericsson.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/mi-support.exp (mi_expect_stop): Expect message for
|
|
|
|
|
|
inferiors that exit with non-zero exit code.
|
|
|
|
|
|
|
2014-05-13 08:40:22 +02:00
|
|
|
|
2014-05-14 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-file.exp (test_file_list_exec_source_file): Don't
|
|
|
|
|
|
match absolute path on remote host.
|
|
|
|
|
|
(test_file_list_exec_source_files): Remove "/" from the
|
|
|
|
|
|
pattern.
|
|
|
|
|
|
|
2014-05-13 03:37:54 +02:00
|
|
|
|
2014-05-14 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* boards/local-remote-host-notty.exp (${board}_file): New
|
|
|
|
|
|
proc.
|
|
|
|
|
|
|
2014-04-30 18:04:50 +02:00
|
|
|
|
2014-05-07 Kyle McMartin <kyle@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
Pushed by Joel Brobecker <brobecker@adacore.com>.
|
|
|
|
|
|
* gdb.arch/aarch64-atomic-inst.c: New file.
|
|
|
|
|
|
* gdb.arch/aarch64-atomic-inst.exp: New file.
|
|
|
|
|
|
|
Relax the pattern in dwzbuildid.exp
Hi,
I recently see the fail in dwzbuildid.exp below on some targets,
(gdb) print the_int
No symbol "the_int" in current context.
(gdb) FAIL: gdb.dwarf2/dwzbuildid.exp: mismatch: print the_int
Looks the pattern expects to see "No symbol table is loaded", which
is emitted in c-exp.y,
variable: name_not_typename
....
if (msymbol.minsym != NULL)
write_exp_msymbol (pstate, msymbol);
else if (!have_full_symbols () && !have_partial_symbols ())
error (_("No symbol table is loaded. Use the \"file\" command."));
else
error (_("No symbol \"%s\" in current context."),
copy_name ($1.stoken));
it is expected to have no full symbols nor partial symbols, but something
brings full symbols or partial symbols in. I added "maint info symtabs"
and "maint info psymtabs" in dwzbuildid.exp, and it shows symbols are from
ld.so, which has debug information. Then, I reproduce the fail like this,
$ make check RUNTESTFLAGS="CFLAGS_FOR_TARGET='-Wl,-rpath=${glibc_build}:${glibc_build}/math -Wl,--dynamic-linker=${glibc_build}/elf/ld.so' dwzbuildid.exp"
${glibc_build} is the glibc build tree. Debug information is not striped,
so the test fail. However, if I strip debug information from libc.so, libm.so
and ld.so. The test passes.
This patch is to relax the pattern to match the both cases that glibc build
has and has not debug information.
gdb/testsuite:
2014-05-07 Yao Qi <yao@codesourcery.com>
* gdb.dwarf2/dwzbuildid.exp: Match output "No symbol "the_int" in
current context" too.
2014-05-06 15:47:36 +02:00
|
|
|
|
2014-05-07 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dwzbuildid.exp: Match output "No symbol "the_int"
|
|
|
|
|
|
in current context" too.
|
|
|
|
|
|
|
2014-05-05 22:43:31 +02:00
|
|
|
|
2014-05-05 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.linespec/ls-dollar.exp: Add test for linespec
|
|
|
|
|
|
file:convenience_variable.
|
|
|
|
|
|
|
Partially available/unavailable data in requested range
In gdb.trace/unavailable.exp, an action is defined to collect
struct_b.struct_a.array[2] and struct_b.struct_a.array[100],
struct StructB
{
int d, ef;
StructA struct_a;
int s:1;
static StructA static_struct_a;
const char *string;
};
and the other files are not collected.
When GDB examine traceframe collected by the action, "struct_b" is
unavailable completely, which is wrong.
(gdb) p struct_b
$1 = <unavailable>
When GDB reads 'struct_b', it will request to read memory at struct_b's address
of length LEN. Since struct_b.d is not collected, no 'M' block
includes the first part of the desired range, so tfile_xfer_partial returns
TARGET_XFER_UNAVAILABLE and GDB thinks the whole requested range is unavailable.
In order to fix this problem, in the iteration to 'M' blocks, we record the
lowest address of blocks within the request range. If it has, the requested
range isn't unavailable completely. This applies to ctf too. With this patch
applied, the result looks good and fails in unavailable.exp is fixed.
(gdb) p struct_b
$1 = {d = <unavailable>, ef = <unavailable>, struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable>,
<unavailable>, -1431655766, <unavailable> <repeats 97 times>, -1431655766, <unavailable> <repeats 9899 times>}, ptr = <unavailable>, bitfield = <unavailable>}, s = <unavailable>, static static_struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable> <repeats 10000 times>}, ptr = <unavailable>,
bitfield = <unavailable>}, string = <unavailable>}
gdb:
2014-05-05 Yao Qi <yao@codesourcery.com>
Pedro Alves <palves@redhat.com>
* tracefile-tfile.c (tfile_xfer_partial): Record the lowest
address of blocks that intersects the requested range. Trim
LEN up to LOW_ADDR_AVAILABLE if read from executable read-only
sections.
* ctf.c (ctf_xfer_partial): Likewise.
gdb/testsuite:
2014-05-05 Yao Qi <yao@codesourcery.com>
* gdb.trace/unavailable.exp (gdb_collect_args_test): Save
traceframes into tfile and ctf trace files. Read data from
trace file and test collected data.
(gdb_collect_locals_test): Likewise.
(gdb_unavailable_registers_test): Likewise.
(gdb_unavailable_floats): Likewise.
(gdb_collect_globals_test): Likewise.
(top-level): Append "ctf" to trace_file_targets if GDB
supports.
2014-04-26 04:14:52 +02:00
|
|
|
|
2014-05-05 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.trace/unavailable.exp (gdb_collect_args_test): Save
|
|
|
|
|
|
traceframes into tfile and ctf trace files. Read data from
|
|
|
|
|
|
trace file and test collected data.
|
|
|
|
|
|
(gdb_collect_locals_test): Likewise.
|
|
|
|
|
|
(gdb_unavailable_registers_test): Likewise.
|
|
|
|
|
|
(gdb_unavailable_floats): Likewise.
|
|
|
|
|
|
(gdb_collect_globals_test): Likewise.
|
|
|
|
|
|
(top-level): Append "ctf" to trace_file_targets if GDB
|
|
|
|
|
|
supports.
|
|
|
|
|
|
|
2014-04-25 10:18:52 +02:00
|
|
|
|
2014-05-05 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.trace/unavailable.exp (gdb_collect_args_test): Move some
|
|
|
|
|
|
code to ...
|
|
|
|
|
|
(gdb_collect_args_test_1): ... it. New proc.
|
|
|
|
|
|
(gdb_collect_locals_test): Move some code to ...
|
|
|
|
|
|
(gdb_collect_locals_test_1): ... it. New proc.
|
|
|
|
|
|
(gdb_unavailable_registers_test): Move some code to ...
|
|
|
|
|
|
(gdb_unavailable_registers_test_1): ... it. New proc.
|
|
|
|
|
|
(gdb_unavailable_floats): Move some code to ...
|
|
|
|
|
|
(gdb_unavailable_floats_1): ... it. New proc.
|
|
|
|
|
|
|
2014-05-02 22:50:45 +02:00
|
|
|
|
2014-05-02 Sergio Durigan Junior <sergiodj@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.arch/amd64-stap-optional-prefix.S (main): Add several
|
|
|
|
|
|
probes to test for bitness recognition.
|
|
|
|
|
|
* gdb.arch/amd64-stap-optional-prefix.exp
|
|
|
|
|
|
(test_probe_value_without_reg): New procedure.
|
|
|
|
|
|
Add code to test for different kinds of bitness.
|
|
|
|
|
|
|
2014-05-02 22:45:35 +02:00
|
|
|
|
2014-05-02 Sergio Durigan Junior <sergiodj@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR breakpoints/16889
|
|
|
|
|
|
* gdb.arch/amd64-stap-optional-prefix.S: New file.
|
|
|
|
|
|
* gdb.arch/amd64-stap-optional-prefix.exp: Likewise.
|
|
|
|
|
|
|
gdb_load: Fix latent bugs
In a test I was writting, I needed a procedure that would connect to
the target, and do "load", or equivalent.
Years ago, boards would override gdb_load to implement that. Then
gdb_reload was added, and gdb_load was relaxed to allow boards avoid
the spawing and connecting to the target. This sped up gdbserver
testing. See
https://www.sourceware.org/ml/gdb-patches/2007-02/msg00318.html.
To actually spawn the target and load the executable on the target
side, gdb_reload was born:
# gdb_reload -- load a file into the target. Called before "running",
# either the first time or after already starting the program once,
# for remote targets. Most files that override gdb_load should now
# override this instead.
proc gdb_reload { } {
# For the benefit of existing configurations, default to gdb_load.
# Specifying no file defaults to the executable currently being
# debugged.
return [gdb_load ""]
}
Note the comment about specifying no file. Indeed looking at
config/sid.exp, or config/monitor.exp, we see examples of that.
However, the default gdb_load itself doesn't handle the case of no
file specified. When passed no file, it just calls gdb_file_cmd with
no file either, which ends up invocing the "file" command with no
argument, which means unloading the file and its symbols... That
means calling gdb_reload when testing against native targets is
broken. We don't see that today because the only call to gdb_reload
that exists today is guarded by target_info exists
gdb,do_reload_on_run.
The native-extended-gdbserver.exp board is likewise broken here. When
[gdb_load ""] is called, the board sets the remote exec-file to "" ...
Tested on x86_64 Fedora 17, native, remote gdbserver and
extended-remote gdbserver.
testsuite/
2014-05-01 Pedro Alves <palves@redhat.com>
* lib/gdb.exp (gdb_load): Extend comment. Skip calling
gdb_file_cmd if no file is specified.
* boards/native-extended-gdbserver.exp (gdb_load): Use the
last_loaded_file to set the remote exec-file.
2014-05-02 01:59:31 +02:00
|
|
|
|
2014-05-01 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (gdb_load): Extend comment. Skip calling
|
|
|
|
|
|
gdb_file_cmd if no file is specified.
|
|
|
|
|
|
* boards/native-extended-gdbserver.exp (gdb_load): Use the
|
|
|
|
|
|
last_loaded_file to set the remote exec-file.
|
|
|
|
|
|
|
2014-05-01 18:25:52 +02:00
|
|
|
|
2014-05-01 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* boards/local-remote-host.exp: New file.
|
|
|
|
|
|
|
2014-05-01 18:25:51 +02:00
|
|
|
|
2014-05-01 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* boards/local-remote-host.exp: Rename to ...
|
|
|
|
|
|
* boards/local-remote-host-notty.exp: ... this.
|
|
|
|
|
|
|
2014-04-20 07:19:02 +02:00
|
|
|
|
2014-04-28 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.ada/dyn_arrayidx: New testcase.
|
|
|
|
|
|
|
2014-04-24 10:51:33 +02:00
|
|
|
|
2014-04-26 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dwz.exp: Compile main.c to object. Restart GDB
|
|
|
|
|
|
and compute the length of function main. Save it in
|
|
|
|
|
|
$main_length.
|
|
|
|
|
|
(Dwarf::assemble): Use $main_length instead of hard-coded 10.
|
|
|
|
|
|
(top-level): Use gdb_compile to compile objects into
|
|
|
|
|
|
executable and restart GDB. Remove invocation to
|
|
|
|
|
|
prepare_for_testing.
|
|
|
|
|
|
|
PR server/16255: gdbserver cannot attach to a second inferior that is multi-threaded.
On Linux, we need to explicitly ptrace attach to all lwps of a
process. Because GDB might not be connected yet when an attach is
requested, and thus it may not be possible to activate thread_db, as
that requires access to symbols (IOW, gdbserver --attach), a while ago
we make linux_attach loop over the lwps as listed by /proc/PID/task to
find the lwps to attach to.
linux_attach_lwp_1 has:
...
if (initial)
/* If lwp is the tgid, we handle adding existing threads later.
Otherwise we just add lwp without bothering about any other
threads. */
ptid = ptid_build (lwpid, lwpid, 0);
else
{
/* Note that extracting the pid from the current inferior is
safe, since we're always called in the context of the same
process as this new thread. */
int pid = pid_of (current_inferior);
ptid = ptid_build (pid, lwpid, 0);
}
That "safe" comment referred to linux_attach_lwp being called by
thread-db.c. But this was clearly missed when a new call to
linux_attach_lwp_1 was added to linux_attach. As a result,
current_inferior will be set to some random process, and non-initial
lwps of the second inferior get assigned the pid of the wrong
inferior. E.g., in the case of attaching to two inferiors, for the
second inferior (and so on), non-initial lwps of the second inferior
get assigned the pid of the first inferior. This doesn't trigger on
the first inferior, when current_inferior is NULL, add_thread switches
the current inferior to the newly added thread.
Rather than making linux_attach switch current_inferior temporarily
(thus avoiding further reliance on global state), or making
linux_attach_lwp_1 get the tgid from /proc, which add extra syscalls,
and will be wrong in case of the user having originally attached
directly to a non-tgid lwp, and then that lwp spawning new clones (the
ptid.pid field of further new clones should be the same as the
original lwp's pid, which is not the tgid), we note that callers of
linux_attach_lwp/linux_attach_lwp_1 always have the right pid handy
already, so they can pass it down along with the lwpid.
The only other reason for the "initial" parameter is to error out
instead of warn in case of attach failure, when we're first attaching
to a process. There are only three callers of
linux_attach_lwp/linux_attach_lwp_1, and each wants to print a
different warn/error string, so we can just move the error/warn out of
linux_attach_lwp_1 to the callers, thus getting rid of the "initial"
parameter.
There really nothing gdbserver-specific about attaching to two
threaded processes, so this adds a new test under gdb.multi/. The
test passes cleanly against the native GNU/Linux target, but
fails/triggers the bug against GDBserver (before the patch), with the
native-extended-remote board (as plain remote doesn't support
multi-process).
Tested on x86_64 Fedora 17, with the native-extended-gdbserver board.
gdb/gdbserver/
2014-04-25 Pedro Alves <palves@redhat.com>
PR server/16255
* linux-low.c (linux_attach_fail_reason_string): New function.
(linux_attach_lwp): Delete.
(linux_attach_lwp_1): Rename to ...
(linux_attach_lwp): ... this. Take a ptid instead of a pid as
argument. Remove "initial" parameter. Return int instead of
void. Don't error or warn here.
(linux_attach): Adjust to call linux_attach_lwp. Call error on
failure to attach to the tgid. Call warning when failing to
attach to an lwp.
* linux-low.h (linux_attach_lwp): Take a ptid instead of a pid as
argument. Remove "initial" parameter. Return int instead of
void. Don't error or warn here.
(linux_attach_fail_reason_string): New declaration.
* thread-db.c (attach_thread): Adjust to linux_attach_lwp's
interface change. Use linux_attach_fail_reason_string.
gdb/
2014-04-25 Pedro Alves <palves@redhat.com>
PR server/16255
* common/linux-ptrace.c (linux_ptrace_attach_warnings): Rename to ...
(linux_ptrace_attach_fail_reason): ... this. Remove "warning: "
and newline from built string.
* common/linux-ptrace.h (linux_ptrace_attach_warnings): Rename to ...
(linux_ptrace_attach_fail_reason): ... this.
* linux-nat.c (linux_nat_attach): Adjust to use
linux_ptrace_attach_fail_reason.
gdb/testsuite/
2014-04-25 Simon Marchi <simon.marchi@ericsson.com>
Pedro Alves <palves@redhat.com>
PR server/16255
* gdb.multi/multi-attach.c: New file.
* gdb.multi/multi-attach.exp: New file.
2014-04-25 20:07:33 +02:00
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2014-04-25 Simon Marchi <simon.marchi@ericsson.com>
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Pedro Alves <palves@redhat.com>
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PR server/16255
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* gdb.multi/multi-attach.c: New file.
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* gdb.multi/multi-attach.exp: New file.
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Fix several "set remote foo-packet on/off" commands.
For several RSP packets, there's a corresponding "set remote
foo-packet on/off/auto" command that one can use do bypass
auto-detection of support for the packet or feature. However, I
noticed that setting several of these commands to 'on' or 'off'
doesn't actually have any effect. These are, at least:
set remote breakpoint-commands-packet
set remote conditional-breakpoints-packet
set remote fast-tracepoints-packet
set remote static-tracepoints-packet
set remote install-in-trace-packet
These are commands that control a remote protocol feature that doesn't
have a corresponding regular packet, and because of that we cache the
knowledge of the remote side support as returned by the qSupported
packet in the remote_state object.
E.g., in the case of the 'set remote breakpoint-commands-packet'
command, whether the feature is supported is recorded in the
'breakpoint_commands' field of the remote_state object.
Whether to bypass packet support auto-detection or not is controlled
by the 'detect' field of the corresponding packet's packet_config
structure. That field is the variable associated directly with the
"set remote foo-packet" command. Actual remote stub support for the
packet (or feature) is recorded in the 'support' field of the same
structure.
However, when the user toggles the command, the 'support' field is
also correspondingly updated to PACKET_ENABLE/DISABLE/SUPPORT_UNKNOWN,
discarding the knowledge of whether the target actually supports the
feature. If one toggles back to 'auto', it's no big issue for real
packets, as they'll just end up re-probed the next time they might be
necessary. But features whose support is only reported through
qSupported don't get their corresponding (manually added/maintained)
fields in remote_state objected updated. As we lost the actual status
of the target support for the feature, GDB would need to probe the
qSupported features again, which GDB doesn't do.
But we can avoid that extra traffic, and clean things up, IMO.
Instead of going in that direction, this patch completely decouples
struct packet_config's 'detect' and 'support' fields. E.g., when the
user does "set remote foo-packet off", instead of setting the packet
config's 'support' field to PACKET_DISABLE, the 'support' field is not
touched at all anymore. That is, we end up respecting this simple
table:
| packet_config->detect | packet_config->support | should use packet/feature? |
|-----------------------+------------------------+----------------------------|
| auto | PACKET_ENABLE | PACKET_ENABLE |
| auto | PACKET_DISABLE | PACKET_DISABLE |
| auto | PACKET_UNKNOWN | PACKET_UNKNOWN |
| yes | don't care | PACKET_ENABLE |
| no | don't care | PACKET_DISABLE |
This is implemented by the new packet_support function. With that, we
need to update this pattern throughout:
if (remote_protocol_packets[PACKET_foo].support == PACKET_DISABLE)
to do this instead:
if (packet_support (PACKET_qAttached) == PACKET_DISABLE)
where as mentioned, the packet_support function takes struct
packet_config's 'detect' field into account, like in the table above.
As when the packet is force-disabled or force-enabled, the 'support'
field is just ignored, if the command is set back to auto, we'll
resume respecting whatever the target said it supports. IOW, the end
result is that the 'support' field always represents whether the
target actually supports the packet or not.
After all that, the manually maintained breakpoint_commands and
equivalent fields of struct remote_state can then be eliminated, with
references replaced by checking the result of calling the
packet_support function on the corresponding packet or feature. This
required adding new PACKET_foo enum values for several features that
didn't have it yet. (The patch does not add corresponding "set remote
foo-packet" style commands though, focusing only on bug fixing and
laying the groundwork).
Tested on x86_64 Fedora 17, native GDBserver. The new tests all fail
without this patch.
gdb/
2014-04-25 Pedro Alves <palves@redhat.com>
* remote.c (struct remote_state): Remove multi_process_aware,
non_stop_aware, cond_tracepoints, cond_breakpoints,
breakpoint_commands, fast_tracepoints, static_tracepoints,
install_in_trace, disconnected_tracing,
enable_disable_tracepoints, string_tracing, and
augmented_libraries_svr4_read fields.
(remote_multi_process_p): Move further below in the file.
(struct packet_config): Add comments.
(update_packet_config): Delete function.
(show_packet_config_cmd): Use packet_config_support.
(add_packet_config_cmd): Use NULL as set callback.
(packet_ok): "set remote foo-packet"-style commands no longer
change config->supported -- adjust.
(PACKET_ConditionalTracepoints, PACKET_ConditionalBreakpoints)
(PACKET_BreakpointCommands, PACKET_FastTracepoints)
(PACKET_StaticTracepoints, PACKET_InstallInTrace): Add comments.
(PACKET_QNonStop, PACKET_multiprocess_feature)
(PACKET_EnableDisableTracepoints_feature, PACKET_tracenz_feature)
(PACKET_DisconnectedTracing_feature)
(PACKET_augmented_libraries_svr4_read_feature): New enum values.
(set_remote_protocol_packet_cmd): Delete function.
(packet_config_support, packet_support): New functions.
(set_remote_protocol_Z_packet_cmd): Don't call
update_packet_config.
(remote_query_attached, remote_pass_signals)
(remote_program_signals, remote_threads_info)
(remote_threads_extra_info, remote_start_remote): Use
packet_support.
(remote_start_remote): Use packet_config_support and
packet_support.
(init_all_packet_configs): Set all packets to unknown support,
instead of calling update_packet_config.
(remote_check_symbols): Use packet_support.
(remote_supported_packet): Unconditionally set the packet config's
support status.
(remote_multi_process_feature, remote_non_stop_feature)
(remote_cond_tracepoint_feature, remote_cond_breakpoint_feature)
(remote_breakpoint_commands_feature)
(remote_fast_tracepoint_feature, remote_static_tracepoint_feature)
(remote_install_in_trace_feature)
(remote_disconnected_tracing_feature)
(remote_enable_disable_tracepoint_feature)
(remote_string_tracing_feature)
(remote_augmented_libraries_svr4_read_feature): Delete functions.
(remote_protocol_features): Adjust to use remote_supported_packet
for "augmented-libraries-svr4-read", "multiprocess", "QNonStop",
"ConditionalTracepoints", "ConditionalBreakpoints",
"BreakpointCommands", "FastTracepoints", "StaticTracepoints",
"InstallInTrace", "DisconnectedTracing", "DisconnectedTracing",
"EnableDisableTracepoints", and "tracenz".
(remote_query_supported): Use packet_support.
(remote_open_1): Adjust.
(extended_remote_attach_1): Use packet_support. Switch on the
result of packet_ok instead of checking whether the packet ended
up disabled.
(remote_vcont_resume): Use packet_support.
(remote_resume, remote_stop_ns, fetch_register_using_p)
(remote_prepare_to_store, store_register_using_P)
(check_binary_download, remote_write_bytes): Use packet_support.
(remote_vkill): Use packet_support. Switch on the result of
packet_ok instead of checking whether the packet ended up
disabled.
(extended_remote_supports_disable_randomization): Use
packet_support.
(extended_remote_run): Switch on the result of packet_ok instead
of checking whether the packet ended up disabled.
(remote_insert_breakpoint, remote_remove_breakpoint)
(remote_insert_watchpoint, remote_remove_watchpoint)
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint): Use
packet_support.
(remote_search_memory): Use packet_config_support.
(remote_get_thread_local_address, remote_get_tib_address)
(remote_hostio_send_command, remote_can_execute_reverse): Use
packet_support.
(remote_supports_cond_tracepoints)
(remote_supports_cond_breakpoints)
(remote_supports_fast_tracepoints)
(remote_supports_static_tracepoints)
(remote_supports_install_in_trace)
(remote_supports_enable_disable_tracepoint)
(remote_supports_string_tracing)
(remote_can_run_breakpoint_commands): Rewrite, checking whether
the packet config says the feature is enabled or disabled.
(remote_download_tracepoint, remote_trace_set_readonly_regions)
(remote_get_trace_status): Use packet_support.
(remote_set_disconnected_tracing): Adjust to check whether the
feature is enabled with packet_support.
(remote_set_trace_buffer_size, remote_use_agent)
(remote_can_use_agent, remote_supports_btrace): Use
packet_support.
(remote_enable_btrace, remote_disable_btrace, remote_read_btrace):
Use packet_config_support.
(remote_augmented_libraries_svr4_read): Rewrite, checking whether
the packet config says the feature is enabled or disabled.
(set_range_stepping): Use packet_support.
gdb/testsuite/
2014-04-25 Pedro Alves <palves@redhat.com>
* gdb.base/cond-eval-mode.exp (warning): Move trailing \r\n to
user.
(top level): Test that "set remote conditional-breakpoints-packet
off" works as intended.
* gdb.base/dprintf.exp: Test that "set remote
breakpoint-commands-packet off" works as intended.
* gdb.trace/change-loc.exp (tracepoint_install_in_trace_disabled):
New function.
(top level): Call it.
* gdb.trace/ftrace.exp (test_fast_tracepoints): Test that "set
remote fast-tracepoints-packet off" works as intended.
* gdb.trace/qtro.exp (gdb_is_target_remote): Moved ...
* lib/gdb.exp (gdb_is_target_remote): ... here.
2014-04-25 19:07:02 +02:00
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2014-04-25 Pedro Alves <palves@redhat.com>
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* gdb.base/cond-eval-mode.exp (warning): Move trailing \r\n to
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user.
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(top level): Test that "set remote conditional-breakpoints-packet
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off" works as intended.
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* gdb.base/dprintf.exp: Test that "set remote
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breakpoint-commands-packet off" works as intended.
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* gdb.trace/change-loc.exp (tracepoint_install_in_trace_disabled):
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New function.
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(top level): Call it.
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* gdb.trace/ftrace.exp (test_fast_tracepoints): Test that "set
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remote fast-tracepoints-packet off" works as intended.
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* gdb.trace/qtro.exp (gdb_is_target_remote): Moved ...
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* lib/gdb.exp (gdb_is_target_remote): ... here.
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2014-04-11 08:45:28 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.base/catch-syscall.c: Make unreferenced statics non-static to
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ensure clang would not discard them.
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* gdb.base/gdbvars.c: Ditto.
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* gdb.base/memattr.c: Ditto.
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* gdb.base/whatis.c: Ditto.
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* gdb.python/py-prettyprint.c: Ditto.
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* gdb.trace/actions.c: Ditto.
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* gdb.cp/ptype-cv-cp.cc: Mark unused global const int as used to
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ensure clang would not discard it.
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2014-04-25 07:16:29 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.stabs/gdb11479.c (tag_dummy_enum): introduce a variable to cause
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clang to emit the full definition of type required by the test
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* gdb.stabs/gdb11479.exp (do_test): correct a typo in a test message
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2014-04-13 09:48:45 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.cp/pr10728-x.cc (main::x): Return by value instead of pointer to
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coax Clang into emitting the definition of the type.
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* gdb.cp/pr10728-x.h (y): Ditto.
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* gdb.cp/pr10728-y.cc (y): Ditto.
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2014-04-13 20:42:02 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.base/label.exp: XFAIL label related tests under Clang.
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* gdb.cp/cplabel.exp: Ditto.
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* gdb.linespec/ls-errs.exp: Refactor tests to execute directly and XFAIL
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under Clang those using labels.
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2014-04-24 12:46:22 +02:00
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2014-04-25 Yao Qi <yao@codesourcery.com>
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* gdb.dwarf2/dwz.exp (Dwarf::assemble): Remove unused
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double_label.
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* gdb.dwarf2/dwzbuildid.exp (Dwarf::assemble): Remove
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partial_label and double_label.
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2014-04-13 09:38:47 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.python/lib-types.exp: Fix test and xfail under gcc due to gcc/55641.
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2014-04-14 02:37:56 +02:00
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2014-04-24 David Blaikie <dblaikie@gmail.com>
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* gdb.cp/cpexprs.cc: Move braces to the same line as the start
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of the function to work across GCC and Clang.
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* gdb.cp/cpexprs.exp: Account for GCC/Clang difference in vtable
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pointer types (const void ** const V void **).
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Add AVX512 registers support to GDB and GDBserver.
This patch adds support for the Intel(R) Advanced Vector
Extensions 512 (Intel(R) AVX-512) registers. Native and remote
debugging are covered by this patch.
Intel(R) AVX-512 is an extension to AVX to support 512-bit wide
SIMD registers in 64-bit mode (XMM0-XMM31, YMM0-YMM31, ZMM0-ZMM31).
The number of available registers in 32-bit mode is still 8
(XMM0-7, YMM0-7, ZMM0-7). The lower 256-bits of the ZMM registers
are aliased to the respective 256-bit YMM registers. The lower
128-bits are aliased to the respective 128-bit XMM registers.
There are also 8 new, dedicated mask registers (K0-K7) in both 32-bit
mode and 64-bit mode.
For more information please see
Intel(R) Developer Zone: Intel(R) AVX
http://software.intel.com/en-us/intel-isa-extensions#pid-16007-1495
Intel(R) Architecture Instruction Set Extensions Programming Reference:
http://software.intel.com/en-us/file/319433-017pdf
2014-04-24 Michael Sturm <michael.sturm@mintel.com>
Walfred Tedeschi <walfred.tedeschi@intel.com>
* amd64-linux-nat.c (amd64_linux_gregset32_reg_offset): Add
AVX512 registers.
(amd64_linux_read_description): Add code to handle AVX512 xstate
mask and return respective tdesc.
* amd64-linux-tdep.c: Include features/i386/amd64-avx512-linux.c
and features/i386/x32-avx512-linux.c.
(amd64_linux_gregset_reg_offset): Add AVX512 registers.
(amd64_linux_core_read_description): Add code to handle AVX512
xstate mask and return respective tdesc.
(_initialize_amd64_linux_tdep): Initialize AVX512 tdesc.
* amd64-linux-tdep.h (AMD64_LINUX_ORIG_RAX_REGNUM): Adjust regnum
calculation.
(AMD64_LINUX_NUM_REGS): Adjust to new number of registers.
(tdesc_amd64_avx512_linux): New prototype.
(tdesc_x32_avx512_linux): Likewise.
* amd64-tdep.c: Include features/i386/amd64-avx512.c and
features/i386/x32-avx512.c.
(amd64_ymm_avx512_names): New register names for pseudo
registers YMM16-31.
(amd64_ymmh_avx512_names): New register names for raw registers
YMMH16-31.
(amd64_k_names): New register names for K registers.
(amd64_zmmh_names): New register names for ZMM raw registers.
(amd64_zmm_names): New registers names for ZMM pseudo registers.
(amd64_xmm_avx512_names): New register names for XMM16-31
registers.
(amd64_pseudo_register_name): Add code to return AVX512 pseudo
registers.
(amd64_init_abi): Add code to intitialize AVX512 tdep variables
if feature is present.
(_initialize_amd64_tdep): Call AVX512 tdesc initializers.
* amd64-tdep.h (enum amd64_regnum): Add AVX512 registers.
(AMD64_NUM_REGS): Adjust to new number of registers.
* i386-linux-nat.c (GETXSTATEREGS_SUPPLIES): Extend range of
registers supplied via XSTATE by AVX512 registers.
(i386_linux_read_description): Add case for AVX512.
* i386-linux-tdep.c: Include i386-avx512-linux.c.
(i386_linux_gregset_reg_offset): Add AVX512 registers.
(i386_linux_core_read_description): Add case for AVX512.
(i386_linux_init_abi): Install supported register note section
for AVX512.
(_initialize_i386_linux_tdep): Add call to tdesc init function for
AVX512.
* i386-linux-tdep.h (I386_LINUX_NUM_REGS): Set number of
registers to be number of zmm7h + 1.
(tdesc_i386_avx512_linux): Add tdesc for AVX512 registers.
* i386-tdep.c: Include features/i386/i386-avx512.c.
(i386_zmm_names): Add ZMM pseudo register names array.
(i386_zmmh_names): Add ZMM raw register names array.
(i386_k_names): Add K raw register names array.
(num_lower_zmm_regs): Add constant for the number of lower ZMM
registers. AVX512 has 16 more ZMM registers than there are YMM
registers.
(i386_zmmh_regnum_p): Add function to look up register number of
ZMM raw registers.
(i386_zmm_regnum_p): Likewise for ZMM pseudo registers.
(i386_k_regnum_p): Likewise for K raw registers.
(i386_ymmh_avx512_regnum_p): Likewise for additional YMM raw
registers added by AVX512.
(i386_ymm_avx512_regnum_p): Likewise for additional YMM pseudo
registers added by AVX512.
(i386_xmm_avx512_regnum_p): Likewise for additional XMM registers
added by AVX512.
(i386_register_name): Add code to hide YMMH16-31 and ZMMH0-31.
(i386_pseudo_register_name): Add ZMM pseudo registers.
(i386_zmm_type): Construct and return vector registers type for ZMM
registers.
(i386_pseudo_register_type): Return appropriate type for YMM16-31,
ZMM0-31 pseudo registers and K registers.
(i386_pseudo_register_read_into_value): Add code to read K, ZMM
and YMM16-31 registers from register cache.
(i386_pseudo_register_write): Add code to write K, ZMM and
YMM16-31 registers.
(i386_register_reggroup_p): Add code to include/exclude AVX512
registers in/from respective register groups.
(i386_validate_tdesc_p): Handle AVX512 feature, add AVX512
registers if feature is present in xcr0.
(i386_gdbarch_init): Add code to initialize AVX512 feature
variables in tdep structure, wire in pseudo registers and call
initialize_tdesc_i386_avx512.
* i386-tdep.h (struct gdbarch_tdep): Add AVX512 related
variables.
(i386_regnum): Add AVX512 registers.
(I386_SSE_NUM_REGS): New define for number of SSE registers.
(I386_AVX_NUM_REGS): Likewise for AVX registers.
(I386_AVX512_NUM_REGS): Likewise for AVX512 registers.
(I386_MAX_REGISTER_SIZE): Change to 64 bytes, ZMM registers are
512 bits wide.
(i386_xmm_avx512_regnum_p): New prototype for register look up.
(i386_ymm_avx512_regnum_p): Likewise.
(i386_k_regnum_p): Likewise.
(i386_zmm_regnum_p): Likewise.
(i386_zmmh_regnum_p): Likewise.
* i387-tdep.c : Update year in copyright notice.
(xsave_ymm_avx512_offset): New table for YMM16-31 offsets in
XSAVE buffer.
(XSAVE_YMM_AVX512_ADDR): New macro.
(xsave_xmm_avx512_offset): New table for XMM16-31 offsets in
XSAVE buffer.
(XSAVE_XMM_AVX512_ADDR): New macro.
(xsave_avx512_k_offset): New table for K register offsets in
XSAVE buffer.
(XSAVE_AVX512_K_ADDR): New macro.
(xsave_avx512_zmm_h_offset): New table for ZMM register offsets
in XSAVE buffer.
(XSAVE_AVX512_ZMM_H_ADDR): New macro.
(i387_supply_xsave): Add code to supply AVX512 registers to XSAVE
buffer.
(i387_collect_xsave): Add code to collect AVX512 registers from
XSAVE buffer.
* i387-tdep.h (I387_NUM_XMM_AVX512_REGS): New define for number
of XMM16-31 registers.
(I387_NUM_K_REGS): New define for number of K registers.
(I387_K0_REGNUM): New define for K0 register number.
(I387_NUM_ZMMH_REGS): New define for number of ZMMH registers.
(I387_ZMM0H_REGNUM): New define for ZMM0H register number.
(I387_NUM_YMM_AVX512_REGS): New define for number of YMM16-31
registers.
(I387_YMM16H_REGNUM): New define for YMM16H register number.
(I387_XMM16_REGNUM): New define for XMM16 register number.
(I387_YMM0_REGNUM): New define for YMM0 register number.
(I387_KEND_REGNUM): New define for last K register number.
(I387_ZMMENDH_REGNUM): New define for last ZMMH register number.
(I387_YMMH_AVX512_END_REGNUM): New define for YMM31 register
number.
(I387_XMM_AVX512_END_REGNUM): New define for XMM31 register
number.
* common/i386-xstate.h: Add AVX 3.1 feature bits, mask and XSTATE
size.
* features/Makefile: Add AVX512 related files.
* features/i386/32bit-avx512.xml: New file.
* features/i386/64bit-avx512.xml: Likewise.
* features/i386/amd64-avx512-linux.c: Likewise.
* features/i386/amd64-avx512-linux.xml: Likewise.
* features/i386/amd64-avx512.c: Likewise.
* features/i386/amd64-avx512.xml: Likewise.
* features/i386/i386-avx512-linux.c: Likewise.
* features/i386/i386-avx512-linux.xml: Likewise.
* features/i386/i386-avx512.c: Likewise.
* features/i386/i386-avx512.xml: Likewise.
* features/i386/x32-avx512-linux.c: Likewise.
* features/i386/x32-avx512-linux.xml: Likewise.
* features/i386/x32-avx512.c: Likewise.
* features/i386/x32-avx512.xml: Likewise.
* regformats/i386/amd64-avx512-linux.dat: New file.
* regformats/i386/amd64-avx512.dat: Likewise.
* regformats/i386/i386-avx512-linux.dat: Likewise.
* regformats/i386/i386-avx512.dat: Likewise.
* regformats/i386/x32-avx512-linux.dat: Likewise.
* regformats/i386/x32-avx512.dat: Likewise.
* NEWS: Add note about new support for AVX512.
testsuite/
* Makefile.in (EXECUTABLES): Added i386-avx512.
* gdb.arch/i386-avx512.c: New file.
* gdb.arch/i386-avx512.exp: Likewise.
gdbserver/
* Makefile.in: Added rules to handle new files
i386-avx512.c i386-avx512-linux.c amd64-avx512.c
amd64-avx512-linux.c x32-avx512.c x32-avx512-linux.c.
* configure.srv (srv_i386_regobj): Add i386-avx512.o.
(srv_i386_linux_regobj): Add i386-avx512-linux.o.
(srv_amd64_regobj): Add amd64-avx512.o and x32-avx512.o.
(srv_amd64_linux_regobj): Add amd64-avx512-linux.o and
x32-avx512-linux.o.
(srv_i386_32bit_xmlfiles): Add i386/32bit-avx512.xml.
(srv_i386_64bit_xmlfiles): Add i386/64bit-avx512.xml.
(srv_amd64_xmlfiles): Add i386/amd64-avx512.xml and
i386/x32-avx512.xml.
(srv_i386_linux_xmlfiles): Add i386/i386-avx512-linux.xml.
(srv_amd64_linux_xmlfiles): Add i386/amd64-avx512-linux.xml and
i386/x32-avx512-linux.xml.
* i387-fp.c (num_avx512_k_registers): New constant for number
of K registers.
(num_avx512_zmmh_low_registers): New constant for number of
lower ZMM registers (0-15).
(num_avx512_zmmh_high_registers): New constant for number of
higher ZMM registers (16-31).
(num_avx512_ymmh_registers): New contant for number of higher
YMM registers (ymm16-31 added by avx521 on x86_64).
(num_avx512_xmm_registers): New constant for number of higher
XMM registers (xmm16-31 added by AVX512 on x86_64).
(struct i387_xsave): Add space for AVX512 registers.
(i387_cache_to_xsave): Change raw buffer size to 64 characters.
Add code to handle AVX512 registers.
(i387_xsave_to_cache): Add code to handle AVX512 registers.
* linux-x86-low.c (init_registers_amd64_avx512_linux): New
prototypei from generated file.
(tdesc_amd64_avx512_linux): Likewise.
(init_registers_x32_avx512_linux): Likewise.
(tdesc_x32_avx512_linux): Likewise.
(init_registers_i386_avx512_linux): Likewise.
(tdesc_i386_avx512_linux): Likewise.
(x86_64_regmap): Add AVX512 registers.
(x86_linux_read_description): Add code to handle AVX512 XSTATE
mask.
(initialize_low_arch): Add code to initialize AVX512 registers.
doc/
* gdb.texinfo (i386 Features): Add description of AVX512
registers.
Change-Id: Ifc4c08c76b85dbec18d02efdbe6182e851584438
Signed-off-by: Michael Sturm <michael.sturm@intel.com>
2013-12-16 16:43:05 +01:00
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2014-04-24 Michael Sturm <michael.sturm@mintel.com>
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Walfred Tedeschi <walfred.tedeschi@intel.com>
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* Makefile.in (EXECUTABLES): Added i386-avx512.
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* gdb.arch/i386-avx512.c: New file.
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* gdb.arch/i386-avx512.exp: Likewise.
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Introduce some new MI test suite cleanups for breakpoint and
breakpoint table handling. This is a patch in five parts (all committed
here in one commit).
----- 1/5: parse_args
parse_args is a very useful utility function which allows you to do
getopt-y kinds of things in Tcl.
Example:
proc myproc {foo args} {
parse_args {{bar} {baz "abc"} {qux}}
# ...
}
myproc ABC -bar -baz DEF peanut butter
will define the following variables in myproc:
foo (=ABC), bar (=1), baz (=DEF), and qux (=0)
args will be the list {peanut butter}
----- 2/5: mi_build_kv_pairs
build_kv_pairs simply does what it says: given the input list
and an option join string, it combines list elements into kv-pairs
for MI handling. It knows how to handle tuples and other special
MI types.
Example:
mi_build_kv_pairs {a b c d e f g \[.*\]}
returns a=\"b\",c=\"d\",e=\"f\",g=\[.*\]
----- 3/5: mi_make_breakpoint
This function builds breakpoint regexps, such as
"bkpt={number=\".*\", [snip]}".
Note that ONLY the options given to mi_make_breakpoint/mi_create_breakpoint
will actually be tested. So if -number is omitted, the regexp will allow
anything [number=\".*\"]
Examples:
mi_make_breakpoint -number 3
mi_create_breakpoint "myfile.c:21" -file myfile.c -line 21
----- 4/5: mi_make_breakpoint_table
This function builds MI breakpoint table regexps.
Example:
set bps {}
lappend bps [mi_make_breakpoint -number 1 -func "main" \
-file ".*/myfile.c" -line 42
lappend bps [mi_make_breakpoint -number 2 -func "marker" \
-file ".*myfile.c" -line 21
gdb_test "-break-info" "\\^done,[mi_make_breakpoint_table $bps]" \
"breakpoint list"
----- 5/5: Update all callers
Self-explanatory
testsuite/ChangeLog
2014-04-23 Keith Seitz <keiths@redhat.com>
* lib/mi-support.exp (mi_list_breakpoints): Delete.
(mi_make_breakpoint_table): New procedure.
(mi_create_breakpoint): Use mi_make_breakpoint
and return the result.
(mi_make_breakpoint): New procedure.
(mi_build_kv_pairs): New procedure.
* gdb.mi/mi-break.exp: Remove unused globals,
update mi_create_breakpoint usage, and use mi_make_breakpoint_table.
All callers updated.
* gdb.mi/mi-dprintf.exp: Use variable to track command
number.
Update all callers of mi_create_breakpoint and use
mi_make_breakpoint_table.
Remove any unused global variables.
* gdb.mi/mi-nonstop.exp: Likewise.
* gdb.mi/mi-nsintrall.exp: Likewise.
* gdb.mi/mi-nsmoribund.exp: Likewise.
* gdb.mi/mi-nsthrexec.exp: Likewise.
* gdb.mi/mi-reverse.exp: Likewise.
* gdb.mi/mi-simplerun.exp: Likewise.
* gdb.mi/mi-stepn.exp: Likewise.
* gdb.mi/mi-syn-frame.exp: Likewise.
* gdb.mi/mi-until.exp: Likewise.
* gdb.mi/mi-var-cp.exp: Likewise.
* gdb.mi/mi-var-display.exp: Likewise.
* gdb.mi/mi2-amd64-entry-value.exp: Likewise.
* gdb.mi/mi2-var-child.exp: Likewise.
* gdb.mi/mi-vla-c99.exp: Likewise.
* lib/mi-support.exp: Likewise.
From Ian Lance Taylor <iant@cygnus.com>:
* lib/gdb.exp (parse_args): New procedure.
2014-04-23 21:17:31 +02:00
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2014-04-23 Keith Seitz <keiths@redhat.com>
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* lib/mi-support.exp (mi_list_breakpoints): Delete.
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(mi_make_breakpoint_table): New procedure.
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(mi_create_breakpoint): Use mi_make_breakpoint
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and return the result.
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(mi_make_breakpoint): New procedure.
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(mi_build_kv_pairs): New procedure.
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* gdb.mi/mi-break.exp: Remove unused globals,
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update mi_create_breakpoint usage, and use mi_make_breakpoint_table.
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All callers updated.
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* gdb.mi/mi-dprintf.exp: Use variable to track command
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number.
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Update all callers of mi_create_breakpoint and use
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mi_make_breakpoint_table.
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Remove any unused global variables.
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* gdb.mi/mi-nonstop.exp: Likewise.
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* gdb.mi/mi-nsintrall.exp: Likewise.
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* gdb.mi/mi-nsmoribund.exp: Likewise.
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* gdb.mi/mi-nsthrexec.exp: Likewise.
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* gdb.mi/mi-reverse.exp: Likewise.
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* gdb.mi/mi-simplerun.exp: Likewise.
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* gdb.mi/mi-stepn.exp: Likewise.
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* gdb.mi/mi-syn-frame.exp: Likewise.
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* gdb.mi/mi-until.exp: Likewise.
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* gdb.mi/mi-var-cp.exp: Likewise.
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* gdb.mi/mi-var-display.exp: Likewise.
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* gdb.mi/mi2-amd64-entry-value.exp: Likewise.
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* gdb.mi/mi2-var-child.exp: Likewise.
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* gdb.mi/mi-vla-c99.exp: Likewise.
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* lib/mi-support.exp: Likewise.
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From Ian Lance Taylor <iant@cygnus.com>:
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* lib/gdb.exp (parse_args): New procedure.
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Stale breakpoint instructions, spurious SIGTRAPS.
Without the code portion of the patch, we get these failures:
FAIL: gdb.base/break-unload-file.exp: always-inserted on: break: continue
FAIL: gdb.base/break-unload-file.exp: always-inserted on: hbreak: continue
FAIL: gdb.base/sym-file.exp: stale bkpts: continue to breakpoint: end here
They all looks like random SIGTRAPs:
continue
Continuing.
Program received signal SIGTRAP, Trace/breakpoint trap.
0x0000000000400541 in foo () at ../../../src/gdb/testsuite/gdb.base/break-unload-file.c:21
21 }
(gdb) FAIL: gdb.base/break-unload-file.exp: always-inserted on: break: continue
(This is a regression caused by the remove-symbol-file command
series.)
break-unload-file.exp is about having breakpoints inserted, and then
doing "file". I caught this while writing a test that does "file
PROGRAM", while PROGRAM was already loaded, which internally does
"file" first, because I wanted to force a breakpoint_re_set, but the
test is more explicit in case GDB ever optimizes out that re-set.
The problem is that unloading the file with "file" ends up in
disable_breakpoints_in_freed_objfile, which marks all breakpoint
locations of the objfile as both shlib_disabled, _and_ clears the
inserted flag, without actually removing the breakpoints from the
inferior. Now, usually, in all-stop, breakpoints will already be
removed from the inferior before the user can issue the "file"
command, but, with non-stop, or breakpoints always-inserted on mode,
breakpoints stay inserted even while the user has the prompt. In the
latter case, then, if we let the program continue, and it executes the
address where we had previously set the breakpoint, it'll actually
execute the breakpoint instruction that we left behind...
Now, one issue is that the intent of
disable_breakpoints_in_freed_objfile is really to handle the unloading
of OBJF_USERLOADED objfiles. These are objfiles that were added with
add-symbol-file and that are removed with remove-symbol-file.
"add-symbol-file"'s docs in the manual clearly say these commands are
used to let GDB know about dynamically loaded code:
You would use this command when @var{filename} has been dynamically
loaded (by some other means) into the program that is running.
Similarly, the online help says:
(gdb) help add-symbol-file
Load symbols from FILE, assuming FILE has been dynamically loaded.
So it makes sense to, like when shared libraries are unloaded through
the generic solib machinery, mark the breakpoint locations as
shlib_disabled. But, the "file" command is not about dynamically
loaded code, it's about the main program. So the patch makes
disable_breakpoints_in_freed_objfile skip all objfiles but
OBJF_USERLOADED ones, thus skipping the main objfile.
Then, the reason that disable_breakpoints_in_freed_objfile was
clearing the inserted flag isn't clear, but likely to avoid breakpoint
removal errors, assuming remove-symbol-file was called after the
dynamic object was already unmapped from the inferior. In that case,
it'd okay to simply clear the inserted flag, but not so if the user
for example does remove-symbol-file to remove the library because he
made a mistake in the library's address, and wants to re-do
add-symbol-file with the correct address.
To address all that, I propose an alternative implementation, that
handles both cases. The patch includes changes to sym-file.exp to
cover them.
This implementation leaves the inserted flag alone, and handles
breakpoint insertion/removal failure gracefully when the locations are
in OBJF_USERLOADED objfiles, just like we handle insertion/removal
failure gracefully for locations in shared libraries.
To try to make sure we aren't patching back stale shadow memory
contents into the inferior, in case the program mapped a different
library at the same address where we had the breakpoint, without the
user having had a chance of remove-symbol-file'ing before, this adds a
new memory_validate_breakpoint function that checks if the breakpoint
instruction is still in memory. ppc_linux_memory_remove_breakpoint
does this unconditionally for all memory breakpoints, and questions
whether memory_remove_breakpoint should be changed to do this for all
breakpoints. Possibly yes, though I'm not certain, hence this
baby-steps patch.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/
2014-04-23 Pedro Alves <palves@redhat.com>
* breakpoint.c (insert_bp_location): Tolerate errors if the
breakpoint is set in a user-loaded objfile.
(remove_breakpoint_1): Likewise. Also tolerate errors if the
location is marked shlib_disabled. If the breakpoint is set in a
user-loaded objfile is a GDB-side memory breakpoint, validate it
before uninsertion. (disable_breakpoints_in_freed_objfile): Skip
non-OBJF_USERLOADED objfiles. Don't clear the location's inserted
flag.
* mem-break.c (memory_validate_breakpoint): New function.
* objfiles.c (userloaded_objfile_contains_address_p): New
function.
* objfiles.h (userloaded_objfile_contains_address_p): Declare.
* target.h (memory_validate_breakpoint): New declaration.
gdb/testsuite/
2014-04-23 Pedro Alves <palves@redhat.com>
* gdb.base/break-unload-file.c: New file.
* gdb.base/break-unload-file.exp: New file.
* gdb.base/sym-file-lib.c (baz): New function.
* gdb.base/sym-file-loader.c (struct segment) <mapped_size>: New
field.
(load): Store the segment's mapped size.
(unload): New function.
(unload_shlib): New function.
* gdb.base/sym-file-loader.h (unload_shlib): New declaration.
* gdb.base/sym-file-main.c (main): Unload, and reload the library,
set a breakpoint at baz, and call it.
* gdb.base/sym-file.exp: New tests for stale breakpoint
instructions.
2014-04-23 00:19:19 +02:00
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2014-04-23 Pedro Alves <palves@redhat.com>
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* gdb.base/break-unload-file.c: New file.
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* gdb.base/break-unload-file.exp: New file.
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* gdb.base/sym-file-lib.c (baz): New function.
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* gdb.base/sym-file-loader.c (struct segment) <mapped_size>: New
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field.
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(load): Store the segment's mapped size.
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(unload): New function.
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(unload_shlib): New function.
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* gdb.base/sym-file-loader.h (unload_shlib): New declaration.
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* gdb.base/sym-file-main.c (main): Unload, and reload the library,
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set a breakpoint at baz, and call it.
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* gdb.base/sym-file.exp: New tests for stale breakpoint
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instructions.
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Don't suppress errors inserting/removing hardware breakpoints in shared
libraries.
As explained in
https://sourceware.org/ml/gdb-patches/2008-08/msg00361.html, after a
shared library was unloaded, we can no longer insert or remove
breakpoints into/from its (no longer present) code segment. That'll
fail with memory errors. However, that concern does not apply to
hardware breakpoints. By definition, hardware breakpoints are
implemented using a mechanism that is not dependent on being able to
modify the target's memory. Usually, by setting up CPU debug
registers. IOW, we should be able to set hw breakpoints in an
unmapped address. We don't seem to have a test that exercises that,
so this patch adds one.
I noticed the error supression because of a related issue -- the
target_insert_hw_breakpoint/target_remove_hw_breakpoint interfaces
don't really distinguish "not supported" from "error" return, and so
remote.c returns -1 in both cases. This results in hardware
breakpoints set in shared libraries silently ending up pending forever
even though the target doesn't actually support hw breakpoints.
(gdb) set breakpoint always-inserted on
(gdb) set remote Z-packet off
(gdb) info breakpoints
No breakpoints or watchpoints.
(gdb) hbreak shrfunc
Hardware assisted breakpoint 3 at 0x7ffff7dfb657: file ../../../src/gdb/testsuite/gdb.base/hbreak-in-shr-unsupported-shr.c, line 21.
(gdb) info break
Num Type Disp Enb Address What
3 hw breakpoint keep y <PENDING> shrfunc
After the patch we get the expected:
(gdb) hbreak shrfunc
Hardware assisted breakpoint 3 at 0x7ffff7dfb657: file ../../../src/gdb/testsuite/gdb.base/hbreak-in-shr-unsupported-shr.c, line 21.
Warning:
Cannot insert hardware breakpoint 3.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.
(gdb) info break
Num Type Disp Enb Address What
3 hw breakpoint keep y 0x00007ffff7dfb657 in shrfunc at ../../../src/gdb/testsuite/gdb.base/hbreak-in-shr-unsupported-shr.c:21
(HW breakpoints set in the main executable, when the target doesn't
support HW breakpoints always resulted in the latter output.)
We probably should improve the insert/remove interface to return a
different error code for unsupported. But I chose to fix the error
supression first, as it's a deeper and wider issue.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/
2014-04-23 Pedro Alves <palves@redhat.com>
* breakpoint.c (insert_bp_location, remove_breakpoint_1): If
the breakpoint is set in a shared library, only suppress
errors for software breakpoints, not hardware breakpoints.
gdb/testsuite/
2014-04-23 Pedro Alves <palves@redhat.com>
* gdb.base/hbreak-in-shr-unsupported-shr.c: New file.
* gdb.base/hbreak-in-shr-unsupported.c: New file.
* gdb.base/hbreak-in-shr-unsupported.exp: New file.
* gdb.base/hbreak-unmapped.c: New file.
* gdb.base/hbreak-unmapped.exp: New file.
* gdb.trace/qtro.exp (gdb_is_target_remote): Move ...
* lib/gdb.exp (gdb_is_target_remote): ... here.
2014-04-23 16:06:47 +02:00
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2014-04-23 Pedro Alves <palves@redhat.com>
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* gdb.base/hbreak-in-shr-unsupported-shr.c: New file.
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* gdb.base/hbreak-in-shr-unsupported.c: New file.
|
|
|
|
|
|
* gdb.base/hbreak-in-shr-unsupported.exp: New file.
|
|
|
|
|
|
* gdb.base/hbreak-unmapped.c: New file.
|
|
|
|
|
|
* gdb.base/hbreak-unmapped.exp: New file.
|
|
|
|
|
|
* gdb.trace/qtro.exp (gdb_is_target_remote): Move ...
|
|
|
|
|
|
* lib/gdb.exp (gdb_is_target_remote): ... here.
|
|
|
|
|
|
|
Consecutive step-overs trigger internal error.
If a thread trips on a breakpoint that needs stepping over just after
finishing a step over, GDB currently fails an assertion. This is a
regression caused by the "Handle multiple step-overs." patch
(99619beac6252113fed212fdb9e1ab97bface423) at
https://sourceware.org/ml/gdb-patches/2014-02/msg00765.html.
(gdb) x /4i $pc
=> 0x400540 <main+4>: movl $0x0,0x2003da(%rip) # 0x600924 <i>
0x40054a <main+14>: movl $0x1,0x2003d0(%rip) # 0x600924 <i>
0x400554 <main+24>: movl $0x2,0x2003c6(%rip) # 0x600924 <i>
0x40055e <main+34>: movl $0x3,0x2003bc(%rip) # 0x600924 <i>
(gdb) PASS: gdb.base/consecutive-step-over.exp: get breakpoint addresses
break *0x40054a
Breakpoint 2 at 0x40054a: file ../../../src/gdb/testsuite/gdb.base/consecutive-step-over.c, line 23.
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 1: set breakpoint
condition $bpnum condition
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 1: set condition
break *0x400554
Breakpoint 3 at 0x400554: file ../../../src/gdb/testsuite/gdb.base/consecutive-step-over.c, line 24.
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 2: set breakpoint
condition $bpnum condition
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 2: set condition
break *0x40055e
Breakpoint 4 at 0x40055e: file ../../../src/gdb/testsuite/gdb.base/consecutive-step-over.c, line 25.
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 3: set breakpoint
condition $bpnum condition
(gdb) PASS: gdb.base/consecutive-step-over.exp: insn 3: set condition
break 27
Breakpoint 5 at 0x400568: file ../../../src/gdb/testsuite/gdb.base/consecutive-step-over.c, line 27.
(gdb) continue
Continuing.
../../src/gdb/infrun.c:5200: internal-error: switch_back_to_stepped_thread: Assertion `!tp->control.trap_expected' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
FAIL: gdb.base/consecutive-step-over.exp: continue to breakpoint: break here (GDB internal error)
The assertion fails, because the code is not expecting that the event
thread itself might need another step over. IOW, not expecting that
TP in:
tp = find_thread_needs_step_over (stepping_thread != NULL,
stepping_thread);
could be the event thread.
A small fix for this would be to clear the event thread's
trap_expected earlier, before asserting. But looking deeper, although
currently_stepping_or_nexting_callback's intention is finding the
thread that is doing a step/next, it also returns the thread that is
doing a step-over dance, with trap_expected set. If there ever was a
reason for that (it was I who added
currently_stepping_or_nexting_callback , but I can't recall why I put
trap_expected there in the first place), the only remaining reason
nowadays is to aid in implementing switch_back_to_stepped_thread's
assertion that is now triggering, by piggybacking on the walk over all
threads, thus avoiding a separate walk. This is quite obscure, and I
think we can do even better, by merging the walks that look for the
stepping thread, and the walk that looks for some thread that might
need a step over.
Tested on x86_64 Fedora 17, native and gdbserver, and also native on
top of my "software single-step on x86_64" series.
gdb/
2014-04-22 Pedro Alves <palves@redhat.com>
* infrun.c (schedlock_applies): New function, factored out from
find_thread_needs_step_over.
(find_thread_needs_step_over): Use it.
(switch_back_to_stepped_thread): Always clear trap_expected if the
step over is finished. Return early if scheduler locking applies.
Look for the stepping thread and a potential step-over thread with
a single loop.
(currently_stepping_or_nexting_callback): Delete.
2014-04-22 Pedro Alves <palves@redhat.com>
* gdb.base/consecutive-step-over.c: New file.
* gdb.base/consecutive-step-over.exp: New file.
2014-04-22 16:00:56 +02:00
|
|
|
|
2014-04-22 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/consecutive-step-over.c: New file.
|
|
|
|
|
|
* gdb.base/consecutive-step-over.exp: New file.
|
|
|
|
|
|
|
2014-04-22 20:15:48 +02:00
|
|
|
|
2014-04-22 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (gdb_continue_to_breakpoint): Use gdb_test_multiple
|
|
|
|
|
|
instead of send_gdb/gdb_expect.
|
|
|
|
|
|
|
2014-03-21 05:52:24 +01:00
|
|
|
|
2014-04-22 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/trace-support.exp (generate_tracefile): New procedure.
|
|
|
|
|
|
* gdb.trace/tfile.exp: Skip the test if generate_tracefile
|
|
|
|
|
|
return 0.
|
|
|
|
|
|
* gdb.trace/mi-traceframe-changed.exp: Invoke test_tfind_tfile
|
|
|
|
|
|
if generate_tracefile returns 1.
|
|
|
|
|
|
|
Fix PR backtrace/15558
This PR is about an assertion failure in GDB that can be triggered by
setting "backtrace limit" to a value that causes GDB to stop unwinding
after an inline frame. In this case, an assertion in
inline_frame_this_id will trigger:
/* We need a valid frame ID, so we need to be based on a valid
frame. (...). */
gdb_assert (frame_id_p (*this_id));
Looking at the function:
static void
inline_frame_this_id (struct frame_info *this_frame,
void **this_cache,
struct frame_id *this_id)
{
struct symbol *func;
/* In order to have a stable frame ID for a given inline function,
we must get the stack / special addresses from the underlying
real frame's this_id method. So we must call get_prev_frame.
Because we are inlined into some function, there must be previous
frames, so this is safe - as long as we're careful not to
create any cycles. */
*this_id = get_frame_id (get_prev_frame (this_frame));
we see we're computing the frame id for the inline frame. If this is
an inline frame, which is a virtual frame constructed based on debug
info, on top of a real stack frame, we should _always_ be able to find
where the frame was inlined into, as that ultimately just means
peeling off the virtual frames on top of the real stack frame. If
there ultimately was no prev (real) stack frame, then we wouldn't have
been able to construct the inline frame either, by design. That's
what the assertion catches.
So we have an inline frame, we should _always_ be able to compute its
ID, even if that means bypassing the user backtrace limits to get at
the real stack frame's info. The problem is that inline_frame_id
calls get_prev_frame, and that takes user backtrace limits into
account. Code that wants to bypass the limits calls get_prev_frame_1
instead.
Note how get_prev_frame_1 already skips all checks for inline frames:
/* If we are unwinding from an inline frame, all of the below tests
were already performed when we unwound from the next non-inline
frame. We must skip them, since we can not get THIS_FRAME's ID
until we have unwound all the way down to the previous non-inline
frame. */
if (get_frame_type (this_frame) == INLINE_FRAME)
return get_prev_frame_if_no_cycle (this_frame);
And note how the related frame_unwind_caller_id function also uses
get_prev_frame_1:
struct frame_id
frame_unwind_caller_id (struct frame_info *next_frame)
{
struct frame_info *this_frame;
/* Use get_prev_frame_1, and not get_prev_frame. The latter will truncate
the frame chain, leading to this function unintentionally
returning a null_frame_id (e.g., when a caller requests the frame
ID of "main()"s caller. */
next_frame = skip_artificial_frames (next_frame);
this_frame = get_prev_frame_1 (next_frame);
if (this_frame)
return get_frame_id (skip_artificial_frames (this_frame));
else
return null_frame_id;
}
get_prev_frame_1 is currently static in frame.c. As a _1 suffix is
not a good name for an extern function, I've renamed it.
Tested on x86-64 Fedora 17.
gdb/
2014-04-18 Pedro alves <palves@redhat.com>
Tom Tromey <tromey@redhat.com>
PR backtrace/15558
* frame.c (get_prev_frame_1): Rename to ...
(get_prev_frame_always): ... this, and make extern. Adjust.
(skip_artificial_frames): Use get_prev_frame_always.
(frame_unwind_caller_id, frame_pop, get_prev_frame)
(get_frame_unwind_stop_reason): Adjust to rename.
* frame.h (get_prev_frame_always): Declare.
* inline-frame.c: Include frame.h.
(inline_frame_this_id): Use get_prev_frame_always.
gdb/testsuite/
2014-04-18 Tom Tromey <palves@redhat.com>
Pedro alves <tromey@redhat.com>
PR backtrace/15558
* gdb.opt/inline-bt.exp: Test backtracing from an inline function
with a backtrace limit.
* gdb.python/py-frame-inline.exp: Test running to an inline
function with a backtrace limit, and printing the newest frame.
* gdb.python/py-frame-inline.c (main): Call f.
2014-04-18 11:15:21 +02:00
|
|
|
|
2014-04-18 Tom Tromey <palves@redhat.com>
|
|
|
|
|
|
Pedro alves <tromey@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR backtrace/15558
|
|
|
|
|
|
* gdb.opt/inline-bt.exp: Test backtracing from an inline function
|
|
|
|
|
|
with a backtrace limit.
|
|
|
|
|
|
* gdb.python/py-frame-inline.exp: Test running to an inline
|
|
|
|
|
|
function with a backtrace limit, and printing the newest frame.
|
|
|
|
|
|
* gdb.python/py-frame-inline.c (main): Call f.
|
|
|
|
|
|
|
2014-04-17 16:26:37 +02:00
|
|
|
|
2014-04-17 Marcus Shawcroft <marcus.shawcroft@arm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.java/jnpe.exp: Drop srcdir from untested path.
|
|
|
|
|
|
|
2014-04-17 11:52:43 +02:00
|
|
|
|
2014-04-17 Marcus Shawcroft <marcus.shawcroft@arm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (gdb_compile_pthreads, gdb_compile_objc):
|
|
|
|
|
|
Drop prefix from unsupported source file path.
|
|
|
|
|
|
|
[testsuite] Set target-charset to ascii
Hi,
We find gdb.base/printcmds.exp fails a lot on windows host, like this,
p ctable1[163]
$204 = 163 '£'
(gdb) FAIL: gdb.base/printcmds.exp: p ctable1[163]
however, on linux host,
p ctable1[163]
$205 = 163 '\243'
(gdb) PASS: gdb.base/printcmds.exp: p ctable1[163]
The printing related code is in valprint.c:print_wchar,
if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w)
&& w != LCST ('8')
&& w != LCST ('9'))))
{
gdb_wchar_t wchar = w;
if (w == gdb_btowc (quoter) || w == LCST ('\\'))
obstack_grow_wstr (output, LCST ("\\"));
obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
}
else
{
// print W in hex or octal digits
}
When I debug gdb on different hosts, I find
on windows host, gdb_iswprint (iswprint) returns true if 'w' is 163.
However, on linux host, iswprint returns false if 'w' is 163. Looks
this difference is caused by the charset. On Linux host,
the target-charset is ANSI_X3.4-1968, while on windows host, the
target-charset is CP1252.
We can see how target-charset affects the output. On linux host,
(gdb) set target-charset ASCII
(gdb) p ctable1[163]
$1 = 163 '\243'
(gdb) set target-charset CP1252
(gdb) p ctable1[163]
$2 = 163 '£'
we can print the pound sign too, and it shows target-charset does
affect the output.
This patch is to set target-charset temporarily to ASCII for some
charset-sensitive tests. Tested on arm-none-eabi and
powerpc-linux-gnu on mingw32 host. More than one hundred fails are
fixed.
gdb/testsuite:
2014-04-17 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (with_target_charset): New proc.
* gdb.base/printcmds.exp (test_print_all_chars): Wrap tests with
with_target_charset.
(test_print_strings): Likewise.
(test_repeat_bytes): Likewise.
* gdb.base/setvar.exp: Set target-charset to ASCII temporarily
for some tests.
2014-03-24 04:26:06 +01:00
|
|
|
|
2014-04-17 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (with_target_charset): New proc.
|
|
|
|
|
|
* gdb.base/printcmds.exp (test_print_all_chars): Wrap tests with
|
|
|
|
|
|
with_target_charset.
|
|
|
|
|
|
(test_print_strings): Likewise.
|
|
|
|
|
|
(test_repeat_bytes): Likewise.
|
|
|
|
|
|
* gdb.base/setvar.exp: Set target-charset to ASCII temporarily
|
|
|
|
|
|
for some tests.
|
|
|
|
|
|
|
2014-04-16 23:39:10 +02:00
|
|
|
|
2014-04-16 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR gdb/15827
|
|
|
|
|
|
* gdb.dwarf2/corrupt.c: New file.
|
|
|
|
|
|
* gdb.dwarf2/corrupt.exp: New file.
|
|
|
|
|
|
|
2014-04-16 23:20:19 +02:00
|
|
|
|
2014-04-16 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR c++/16597
|
|
|
|
|
|
* gdb.cp/namelessclass.cc: New file.
|
|
|
|
|
|
* gdb.cp/namelessclass.exp: New file.
|
|
|
|
|
|
* gdb.cp/namelessclass.S: New file.
|
|
|
|
|
|
|
2014-04-16 19:40:41 +02:00
|
|
|
|
2014-04-16 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdbserver-support.exp (gdbserver_default_get_remote_address):
|
|
|
|
|
|
Add comment.
|
|
|
|
|
|
(gdbserver_default_get_comm_port): New function.
|
|
|
|
|
|
(gdbserver_start): Check if board file provided
|
|
|
|
|
|
"gdbserver,get_comm_port" and use it if so.
|
|
|
|
|
|
* boards/native-stdio-gdbserver.exp (sockethost): Set to "".
|
|
|
|
|
|
(gdb,socketport): Set to "stdio".
|
|
|
|
|
|
(gdbserver,get_comm_port): Set to ${board}_get_comm_port.
|
|
|
|
|
|
(stdio_gdbserver_template): Delete.
|
|
|
|
|
|
(${board}_get_remote_address): Update.
|
|
|
|
|
|
(${board}_build_remote_cmd): Delete.
|
|
|
|
|
|
(${board}_get_comm_port): New function.
|
|
|
|
|
|
(${board}_spawn): Update.
|
|
|
|
|
|
* boards/remote-stdio-gdbserver.exp (${board}_build_remote_cmd):
|
|
|
|
|
|
Delete.
|
|
|
|
|
|
(${board}_get_remote_address): Update.
|
|
|
|
|
|
(${board}_get_comm_port): New function.
|
|
|
|
|
|
|
2014-04-16 18:42:29 +02:00
|
|
|
|
2014-04-16 Andrew Burgess <aburgess@broadcom.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/memattr.exp: Improve regexps to handle memory regions
|
|
|
|
|
|
appearing in any order.
|
|
|
|
|
|
|
2014-04-16 01:11:32 +02:00
|
|
|
|
2014-04-15 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.gdb/selftest.exp (do_steps_and_nexts): Don't reference
|
|
|
|
|
|
uninitialized value of "description".
|
|
|
|
|
|
|
2014-04-15 21:07:33 +02:00
|
|
|
|
2014-04-15 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-simplerun.exp (test_breakpoints_creation_and_listing):
|
|
|
|
|
|
Remove unused globals.
|
|
|
|
|
|
(test_running_the_program): Likewise.
|
|
|
|
|
|
(test_controlled_execution): Likewise.
|
|
|
|
|
|
(test_controlling_breakpoints): Likewise.
|
|
|
|
|
|
(test_program_termination): Likewise.
|
|
|
|
|
|
|
2014-04-15 20:47:57 +02:00
|
|
|
|
2014-04-15 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-break.exp (test_tbreak_creation_and_listing): Remove
|
|
|
|
|
|
unused globals.
|
|
|
|
|
|
(test_rbreak_creation_and_listing): Likewise.
|
|
|
|
|
|
(test_ignore_count): Likewise.
|
|
|
|
|
|
(test_error): Likewise.
|
|
|
|
|
|
|
gdb.base/sym-file.exp, hide guts of the custom loader.
This test uses a simple custom elf loader, implemented in
gdb.base/sym-file-loader.h|c. This loader doesn't have a dlclose-like
function today, but I'll need one. But, I found that the guts of the
loader are exposed too much to the client, making the interface more
complicated than necessary. It's simpler if the loader just exports a
few dlopen/dlsym -style functions. That's what this patch does.
Tested on x86_86 Fedora 17, native and gdbserver.
gdb/testsuite/
2014-04-15 Pedro Alves <palves@redhat.com>
* gdb.base/sym-file-loader.h: Move inclusion of <inttypes.h>,
<ansidecl.h>, <elf/common.h> and <elf/external.h> to
sym-file-loader.c.
(Elf_External_Phdr, Elf_External_Ehdr, Elf_External_Shdr)
(Elf_External_Sym, Elf_Addr, GET, GETADDR, struct segment): Move
to sym-file-loader.c.
(struct library): Forward declare.
(load_shlib, lookup_function): Change prototypes.
(find_shstrtab, find_strtab, find_shdr, find_symtab)
(translate_offset): Remove declarations.
(get_text_addr): New declaration.
* gdb.base/sym-file-loader.c: Move inclusion of <inttypes.h>,
<ansidecl.h>, <elf/common.h> and <elf/external.h> here from
sym-file-loader.h.
(Elf_External_Phdr, Elf_External_Ehdr, Elf_External_Shdr)
(Elf_External_Sym, Elf_Addr, GET, GETADDR, struct segment): Move
here from sym-file-loader.h.
(struct library): New structure.
(load_shlib, lookup_function): Change prototypes and adjust to
work with a struct library.
(find_shstrtab, find_strtab, find_shdr, find_symtab)
(translate_offset): Make static.
(get_text_addr): New function.
* gdb.base/sym-file-main.c (main): Adjust to new loader interface.
2014-04-15 15:02:34 +02:00
|
|
|
|
2014-04-15 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/sym-file-loader.h: Move inclusion of <inttypes.h>,
|
|
|
|
|
|
<ansidecl.h>, <elf/common.h> and <elf/external.h> to
|
|
|
|
|
|
sym-file-loader.c.
|
|
|
|
|
|
(Elf_External_Phdr, Elf_External_Ehdr, Elf_External_Shdr)
|
|
|
|
|
|
(Elf_External_Sym, Elf_Addr, GET, GETADDR, struct segment): Move
|
|
|
|
|
|
to sym-file-loader.c.
|
|
|
|
|
|
(struct library): Forward declare.
|
|
|
|
|
|
(load_shlib, lookup_function): Change prototypes.
|
|
|
|
|
|
(find_shstrtab, find_strtab, find_shdr, find_symtab)
|
|
|
|
|
|
(translate_offset): Remove declarations.
|
|
|
|
|
|
(get_text_addr): New declaration.
|
|
|
|
|
|
* gdb.base/sym-file-loader.c: Move inclusion of <inttypes.h>,
|
|
|
|
|
|
<ansidecl.h>, <elf/common.h> and <elf/external.h> here from
|
|
|
|
|
|
sym-file-loader.h.
|
|
|
|
|
|
(Elf_External_Phdr, Elf_External_Ehdr, Elf_External_Shdr)
|
|
|
|
|
|
(Elf_External_Sym, Elf_Addr, GET, GETADDR, struct segment): Move
|
|
|
|
|
|
here from sym-file-loader.h.
|
|
|
|
|
|
(struct library): New structure.
|
|
|
|
|
|
(load_shlib, lookup_function): Change prototypes and adjust to
|
|
|
|
|
|
work with a struct library.
|
|
|
|
|
|
(find_shstrtab, find_strtab, find_shdr, find_symtab)
|
|
|
|
|
|
(translate_offset): Make static.
|
|
|
|
|
|
(get_text_addr): New function.
|
|
|
|
|
|
* gdb.base/sym-file-main.c (main): Adjust to new loader interface.
|
|
|
|
|
|
|
2014-04-15 15:13:08 +02:00
|
|
|
|
2014-04-15 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/sym-file-loader.c: Fix typo. SELF_LINK, not SELK_LINK.
|
|
|
|
|
|
|
Make sym-file.exp work with remote targets and hosts.
The main issue here is that this test passes the host's absolute path
to the library to load to the "dlopen"-like routine, which doesn't
work when either the target or the host are remote, unless a shared
filesystem has been set up.
Tests that dynamically load a library solve this by dlopen'ing by
basename, and setting rpath to $ORIGIN. See gdb_compile.
This test doesn't use dlopen, but instead uses its own simple elf
loader. The fix is to pass this loader the library basename, and
teach it to look up the library by basename in the executable's
directory as well, i.e., assuming/emulating RPATH=$ORIGIN.
Tested on x86_64 Fedora 17, native and gdbserver.
I looked around in the web to figure out Linux's /proc/self/exe
equivalents in other ELF OSs. I think I covered all relevant, but if
not, I think it'll be simple enough to add more. (Note the test is
skipped on non-ELF targets.)
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/testsuite/
2014-04-15 Pedro Alves <palves@redhat.com>
* gdb.base/sym-file-loader.c: Include <limits.h>.
(SELF_LINK): New define.
(get_origin): New function.
(load_shlib): Use it.
* gdb.base/sym-file.exp: Don't early return if the target is
remote. Use runto_main, and issue fail is that fails. Use
gdb_load_shlibs.
(shlib_name): Delete.
(lib_so, lib_syms, lib_dlopen): New globals. Use them throughout.
2014-04-14 18:23:55 +02:00
|
|
|
|
2014-04-15 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/sym-file-loader.c: Include <limits.h>.
|
|
|
|
|
|
(SELF_LINK): New define.
|
|
|
|
|
|
(get_origin): New function.
|
|
|
|
|
|
(load_shlib): Use it.
|
|
|
|
|
|
* gdb.base/sym-file.exp: Don't early return if the target is
|
|
|
|
|
|
remote. Use runto_main, and issue fail is that fails. Use
|
|
|
|
|
|
gdb_load_shlibs.
|
|
|
|
|
|
(shlib_name): Delete.
|
|
|
|
|
|
(lib_so, lib_syms, lib_dlopen): New globals. Use them throughout.
|
|
|
|
|
|
|
2014-04-15 13:49:51 +02:00
|
|
|
|
2014-04-15 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/sym-file.exp: Remove regex characters from test
|
|
|
|
|
|
message. Don't refer to breakpoint numbers in test messages.
|
|
|
|
|
|
|
2014-04-15 00:47:15 +02:00
|
|
|
|
2014-04-14 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR c++/16253
|
|
|
|
|
|
* gdb.cp/var-tag.cc: New file.
|
|
|
|
|
|
* gdb.cp/var-tag.exp: New file.
|
|
|
|
|
|
* gdb.dwarf2/dw2-ada-ffffffff.exp: Set the language to C++.
|
|
|
|
|
|
* gdb.dwarf2/dw2-anon-mptr.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/dw2-double-set-die-type.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/dw2-inheritance.exp: Likewise.
|
|
|
|
|
|
|
2014-03-27 19:24:27 +01:00
|
|
|
|
2014-04-14 Tom Tromey <tromey@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.cp/classes.exp (test_enums): Handle underlying type.
|
|
|
|
|
|
* gdb.dwarf2/enum-type.exp: Add test for enum with underlying
|
|
|
|
|
|
type.
|
|
|
|
|
|
* gdb.cp/enum-class.exp: New file.
|
|
|
|
|
|
* gdb.cp/enum-class.cc: New file.
|
|
|
|
|
|
|
2014-03-26 15:54:56 +01:00
|
|
|
|
2014-04-14 Tom Tromey <tromey@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/enum-type.exp: New file.
|
|
|
|
|
|
|
2013-11-15 13:48:00 +01:00
|
|
|
|
2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-vla-c99.exp: New file.
|
|
|
|
|
|
* gdb.mi/vla.c: New file.
|
|
|
|
|
|
|
2013-11-15 13:47:47 +01:00
|
|
|
|
2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-datatypes.c: New file.
|
|
|
|
|
|
* gdb.base/vla-datatypes.exp: New file.
|
|
|
|
|
|
|
2013-11-15 13:47:44 +01:00
|
|
|
|
2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-ptr.c: New file.
|
|
|
|
|
|
* gdb.base/vla-ptr.exp: New file.
|
|
|
|
|
|
|
2013-11-26 15:47:16 +01:00
|
|
|
|
2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/count.exp: New file.
|
|
|
|
|
|
|
2014-02-05 17:22:08 +01:00
|
|
|
|
2014-04-14 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-sideeffect.c: New file.
|
|
|
|
|
|
* gdb.base/vla-sideeffect.exp: New file.
|
|
|
|
|
|
|
2014-04-12 02:20:49 +02:00
|
|
|
|
2014-04-14 David Blaikie <dblaikie@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/non-stop.c: Add return value for non-void function return
|
|
|
|
|
|
statement.
|
|
|
|
|
|
* gdb.threads/staticthreads.c: Ditto.
|
|
|
|
|
|
|
2014-04-12 18:09:41 +02:00
|
|
|
|
2014-04-12 Siva Chandra Reddy <sivachandra@google.com>
|
|
|
|
|
|
Doug Evans <xdje42@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.guile/scm-value.c: Improve test case.
|
|
|
|
|
|
* gdb.guile/scm-value.exp: Add new test.
|
|
|
|
|
|
|
2014-04-11 21:45:37 +02:00
|
|
|
|
2014-04-11 David Blaikie <dblaikie@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.opt/inline-break.exp: Explicitly specify -std=gnu89 to
|
|
|
|
|
|
override Clang's default.
|
|
|
|
|
|
|
2014-04-11 23:47:15 +02:00
|
|
|
|
2014-04-11 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
Revert the following changes (regressions):
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-sideeffect.c: New file.
|
|
|
|
|
|
* gdb.base/vla-sideeffect.exp: New file.
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/count.exp: New file.
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-multi.c: New file.
|
|
|
|
|
|
* gdb.base/vla-multi.exp: New file.
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-ptr.c: New file.
|
|
|
|
|
|
* gdb.base/vla-ptr.exp: New file.
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-datatypes.c: New file.
|
|
|
|
|
|
* gdb.base/vla-datatypes.exp: New file.
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-vla-c99.exp: New file.
|
|
|
|
|
|
* gdb.mi/vla.c: New file.
|
|
|
|
|
|
|
2014-04-11 23:17:17 +02:00
|
|
|
|
2014-04-11 Keith Seitz <keiths@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR c++/16675
|
|
|
|
|
|
* gdb.cp/cpsizeof.exp: New file.
|
|
|
|
|
|
* gdb.cp/cpsizeof.cc: New file.
|
|
|
|
|
|
|
2013-11-15 13:48:00 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
2014-04-12 00:28:08 +02:00
|
|
|
|
* gdb.mi/mi-vla-c99.exp: New file.
|
|
|
|
|
|
* gdb.mi/vla.c: New file.
|
2013-11-15 13:48:00 +01:00
|
|
|
|
|
2013-11-15 13:47:47 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-datatypes.c: New file.
|
|
|
|
|
|
* gdb.base/vla-datatypes.exp: New file.
|
|
|
|
|
|
|
2013-11-15 13:47:44 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-ptr.c: New file.
|
|
|
|
|
|
* gdb.base/vla-ptr.exp: New file.
|
|
|
|
|
|
|
2013-11-15 13:47:32 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/vla-multi.c: New file.
|
|
|
|
|
|
* gdb.base/vla-multi.exp: New file.
|
|
|
|
|
|
|
2013-11-26 15:47:16 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/count.exp: New file.
|
|
|
|
|
|
|
2014-02-05 17:22:08 +01:00
|
|
|
|
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
|
|
|
|
|
|
|
2014-04-12 00:28:08 +02:00
|
|
|
|
* gdb.base/vla-sideeffect.c: New file.
|
|
|
|
|
|
* gdb.base/vla-sideeffect.exp: New file.
|
2014-02-05 17:22:08 +01:00
|
|
|
|
|
2014-04-02 06:44:22 +02:00
|
|
|
|
2014-04-11 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/completion.exp: Check file exists before running tests
|
|
|
|
|
|
on file completion.
|
|
|
|
|
|
|
Conditional Z1 breakpoint hangs GDBserver.
While trying to fix hbreak2.exp against GDBserver I noticed this...
(gdb) hbreak main if 1
Sending packet: $m400580,40#2e...Packet received: e8d2ffffff5dc3554889e54883ec10c745fc00000000eb0eb800000000e8c1ffffff8345fc01817dfce70300007ee9b800000000c9c3662e0f1f840000000000
Sending packet: $m40058f,1#31...Packet received: c7
Hardware assisted breakpoint 1 at 0x40058f: file ../../../src/gdb/testsuite/gdb.base/break-idempotent.c, line 46.
Sending packet: $Z1,40058f,1;X3,220127#9b...
*hangs forever*
The issue is that nothing advances the packet pointer if
add_breakpoint_condition either fails to parse the agent expression,
or fails to find the breakpoint, resulting in an infinite loop in
process_point_options. The latter case should really be fixed by
GDBserver tracking GDB Z1 breakpoints in its breakpoint structures
like Z0 breakpoints are, but the latter case still needs handling.
add_breakpoint_commands has the same issue, though at present I don't
know any way to trigger it other than sending a manually cooked
packet.
Unbelievably, it doesn't look like we have any test that tries setting
a conditional hardware breakpoint. Looking at cond-eval-mode.exp, it
looks like the file was meant to actually test something, but it's
mostly empty today. This patch adds tests that tries all sorts of
conditional breakpoints and watchpoints. The test hangs/fails without
the GDBserver fix.
Tested on x86_64 Fedora 17.
gdb/gdbserver/
2014-04-10 Pedro Alves <palves@redhat.com>
* mem-break.c (add_breakpoint_condition, add_breakpoint_commands):
Check if the condition or command is NULL before checking if the
breakpoint is known. On success, return true.
* mem-break.h (add_breakpoint_condition): Document return.
(add_breakpoint_commands): Add describing comment.
* server.c (skip_to_semicolon): New function.
(process_point_options): Use it.
gdb/testsuite/
2014-04-10 Pedro Alves <palves@redhat.com>
* gdb.base/cond-eval-mode.c: New file.
* gdb.base/cond-eval-mode.exp: Use standard_testfile. Adjust
prepare_for_testing to build the new file. Check result of
runto_main.
(test_break, test_watch): New procedures.
(top level): Use them.
2014-04-10 20:22:23 +02:00
|
|
|
|
2014-04-10 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/cond-eval-mode.c: New file.
|
|
|
|
|
|
* gdb.base/cond-eval-mode.exp: Use standard_testfile. Adjust
|
|
|
|
|
|
prepare_for_testing to build the new file. Check result of
|
|
|
|
|
|
runto_main.
|
|
|
|
|
|
(test_break, test_watch): New procedures.
|
|
|
|
|
|
(top level): Use them.
|
|
|
|
|
|
|
[testsuite] Disable Ctrl-V use for mingw hosts.
On mingw host, we have seen two fails as below,
p int1dim[0]^V@2
Invalid character '^V' in expression.
(gdb) FAIL: gdb.base/printcmds.exp: p int1dim[0]@2
p int1dim[0]^V@2^V@3
Invalid character '^V' in expression.
(gdb) FAIL: gdb.base/printcmds.exp: p int1dim[0]@2@3
In the test, the comment says "# Send \026@ instead of just @ in case
the kill character is @". Historically, kill character was @, and
Ctrl-V (\026) is to escape the next character. However, we don't have
to do so on mingw. This patch is to disable ctrl-v usage on mingw
hots. With this patch applied, it becomes:
p int1dim[0]@2
$607 = {0, 1}
(gdb) PASS: gdb.base/printcmds.exp: p int1dim[0]@2
p int1dim[0]@2@3
$608 = {{0, 1}, {2, 3}, {4, 5}}
Note that this patch is picked from Pierre's submission,
[RFC 6/6] Fix remaining failures in gdb.base/printcmds.exp for mingw hosts.
https://www.sourceware.org/ml/gdb-patches/2013-09/msg00943.html
gdb/testsuite:
2014-04-08 Pierre Muller <muller@sourceware.org>
* gdb.base/printcmds.exp (test_artificial_arrays): Disable
Ctrl-V use for mingw hosts.
2014-03-25 01:37:36 +01:00
|
|
|
|
2014-04-08 Pierre Muller <muller@sourceware.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/printcmds.exp (test_artificial_arrays): Disable
|
|
|
|
|
|
Ctrl-V use for mingw hosts.
|
|
|
|
|
|
|
2014-03-21 14:42:50 +01:00
|
|
|
|
2014-04-07 Siva Chandra Reddy <sivachandra@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.python/py-value.c: Improve test case.
|
|
|
|
|
|
* gdb.python/py-value.exp: Add new test.
|
|
|
|
|
|
|
2014-04-07 23:14:03 +02:00
|
|
|
|
2014-04-07 David Blaikie <dblaikie@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/compiler.c: Identify the clang compiler.
|
|
|
|
|
|
* lib/compiler.cc: Ditto.
|
|
|
|
|
|
|
2014-03-29 02:41:02 +01:00
|
|
|
|
2014-04-03 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/setshow.exp: Invoke string_to_regexp to HOME and PWD.
|
|
|
|
|
|
|
2014-03-31 04:32:07 +02:00
|
|
|
|
2014-04-01 Anton Blanchard <anton@samba.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.arch/ppc64-atomic-inst.exp: Use untested. Make test
|
|
|
|
|
|
messages unique.
|
|
|
|
|
|
|
2014-03-31 03:03:01 +02:00
|
|
|
|
2014-04-01 Anton Blanchard <anton@samba.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.arch/ppc64-atomic-inst.exp: Use standard_testfile,
|
|
|
|
|
|
prepare_for_testing.
|
|
|
|
|
|
|
2014-03-28 02:37:37 +01:00
|
|
|
|
2014-04-01 Anton Blanchard <anton@samba.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.arch/ppc64-atomic-inst.c: Remove.
|
|
|
|
|
|
* gdb.arch/ppc64-atomic-inst.S: New file.
|
|
|
|
|
|
* gdb.arch/ppc64-atomic-inst.exp: Adapt for asm based testcase.
|
|
|
|
|
|
|
2014-03-31 21:07:48 +02:00
|
|
|
|
2014-03-31 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/print-symbol-loading-lib.c: New file.
|
|
|
|
|
|
* gdb.base/print-symbol-loading-main.c: New file.
|
|
|
|
|
|
* gdb.base/print-symbol-loading.exp: New file.
|
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|
2014-03-31 08:20:05 +02:00
|
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|
|
2014-03-31 Yao Qi <yao@codesourcery.com>
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* gdb.base/source-dir.exp: Allow ';' as a directory separator.
|
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|
[varobj] false type-changed status for reference to Ada array
Given the following variable...
BT : Bounded := New_Bounded (Low => 1, High => 3);
... where type Bounded is defined as a simple unconstrained array:
type Bounded is array (Integer range <>) of Integer;
Creating a varobj for that variable, and immediately asking for
varobj updates, GDB says that our varobj changed types!
(gdb)
-var-create bt * bt
^done,name="bt",numchild="3",value="[3]",type="<ref> array (1 .. 3) of integer",has_more="0"
(gdb)
-var-update 1 *
^done,changelist=[{name="bt",value="[3]",in_scope="true",type_changed="true",new_type="<ref> array (1 .. 3) of integer",new_num_children="3",has_more="0"}]
The expected output for the -var-update command is, in this case:
(gdb)
-var-update 1 *
^done,changelist=[]
The problem occurs because the ada-varobj module does not handle
references, and while the references gets stripped when the varobj
gets created, it doesn't when computing varobj updates.
More specifically, when creating the varobj, varobj_create creates
a new value which is a reference to a TYPE_CODE_ARRAY. It then calls
install_new_value which calls coerce_ref with the following comment:
/* We are not interested in the address of references, and given
that in C++ a reference is not rebindable, it cannot
meaningfully change. So, get hold of the real value. */
if (value)
value = coerce_ref (value);
This leaves the varobj's type component still a ref, while
the varobj's value is now our array, without the ref. This explains
why the "value" field in the varobj indicates an array with 3 elements
"[3]" while the "type" field shows a ref to an array. Generally
speaking, most users have said that showing the ref was a useful
piece of information, so this patch is not touching this part.
Next, when the user issues the -var-update request, varobj_update
calls value_of_root to compute the varobj's new value as well as
determine whether the value's type has changed or not. What happens
in a nutshell is that it calls value_of_root_1 (which re-evaluates
the expression and returns the corresponding new value), finds that
the new value is not NULL, and thus asks whether it has mutated:
else if (varobj_value_has_mutated (var, value, value_type (value)))
This then indirectly delegates the determination to the language-specific
callback, which fails, because it does not handle references.
This patch fixes the issue by adjusting varobj_value_has_mutated to
expect references, and strip them when seen. This allows the various
language-specific implementations to remain unaware of references.
gdb/ChangeLog:
* varobj.c (varobj_value_has_mutated): If NEW_VALUE is
a reference, strip the reference layer before calling
the lang_ops value_has_mutated callback.
gdb/testsuite/ChangeLog:
* gdb.ada/mi_dyn_arr: New testcase.
2014-03-20 15:43:08 +01:00
|
|
|
|
2014-03-28 Joel Brobecker <brobecker@adacore.com>
|
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* gdb.ada/mi_dyn_arr: New testcase.
|
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|
2014-03-27 19:38:30 +01:00
|
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|
|
2014-03-27 Doug Evans <dje@google.com>
|
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|
* gdb.dwarf2/dw2-abs-hi-pc.exp: Build tests with "nodebug".
|
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|
2014-03-26 10:44:14 +01:00
|
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|
|
2014-03-27 Yao Qi <yao@codesourcery.com>
|
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* lib/gdb.exp (can_single_step_to_signal_handler): Return zero
|
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|
|
|
|
if target is nios2-*-*.
|
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|
|
2014-03-19 03:16:35 +01:00
|
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|
|
2014-03-26 Yao Qi <yao@codesourcery.com>
|
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* lib/gdb.exp (readline_is_used): New proc.
|
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|
|
* gdb.base/completion.exp: Move tests on command complete up.
|
|
|
|
|
|
Skip the rest of tests if readline is not used.
|
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|
|
|
|
* gdb.ada/complete.exp: Skp the test if readline is not
|
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|
|
used.
|
|
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|
* gdb.base/filesym.exp: Likewise.
|
|
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|
* gdb.base/macscp.exp: Likewise.
|
|
|
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|
|
* gdb.base/readline-ask.exp: Likewise.
|
|
|
|
|
|
* gdb.base/readline.exp: Likewise.
|
|
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|
|
* gdb.python/py-cmd.exp: Likewise.
|
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|
|
* gdb.trace/tfile.exp: Likewise.
|
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2014-03-18 13:26:58 +01:00
|
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|
|
2014-03-26 Yao Qi <yao@codesourcery.com>
|
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* gdb.base/macscp.exp: Fix code format issues.
|
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2014-03-25 15:39:32 +01:00
|
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|
2014-03-25 Ulrich Weigand <uweigand@de.ibm.com>
|
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* gdb.asm/asm-source.exp: Handle powerpc64le-* targets.
|
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|
* gdb.asm/powerpc64le.inc: New file.
|
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2014-03-25 12:45:53 +01:00
|
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2014-03-25 Pedro Alves <palves@redhat.com>
|
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Doug Evans <dje@google.com>
|
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|
|
* gdb.base/source-execution.c: New file.
|
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|
|
* gdb.base/source-execution.exp: New file.
|
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|
* gdb.base/source-execution.gdb: New file.
|
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2014-03-25 00:03:20 +01:00
|
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|
|
2014-03-24 Doug Evans <dje@google.com>
|
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|
|
* gdb.linespec/macro-relative.exp: Mark the test as unsupported if
|
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using fission.
|
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Fix PR breakpoints/16101: gdb.base/dprintf.exp agent-printf failures with non-Z0-supporting gdbservers
After a previous patch that was committed by Pedro (0000e5cc), trying
to set a dprintf with with a GDBserver that doesn't support agent
commands at all now throws an error. But the dprintf tests still fail
with some GDBserver targets because they doesn't try to handle the
case of the server reporting support for breakpoint commands, but not
be able to use those in combination with Z0 (because Z0 isn't actually
supported, for example):
FAIL: gdb.base/dprintf.exp: 1st dprintf, agent
FAIL: gdb.base/dprintf.exp: 2nd dprintf, agent
FAIL: gdb.base/dprintf.exp: dprintf info 2 (pattern 4)
Similarly for the MI test.
This patch makes the tests handle this scenario.
Tested with native, and native gdbserver on x86_64 Fedora 17.
Also tested with the native-gdbserver.exp board hacked with:
set GDBFLAGS "${GDBFLAGS} -ex \"set remote breakpoint-commands off\""
(actually, "set remote breakpoint-commands off" is presently broken,
so this was on top of a fix for that command.)
which results in:
(gdb) PASS: gdb.base/dprintf.exp: 2nd dprintf, gdb
set dprintf-style agent
warning: Target cannot run dprintf commands, falling back to GDB printf
warning: Target cannot run dprintf commands, falling back to GDB printf
(gdb) UNSUPPORTED: gdb.base/dprintf.exp: set dprintf style to agent
gdb.sum:
Running target native-gdbserver
Running ../../../src/gdb/testsuite/gdb.base/dprintf.exp ...
PASS: gdb.base/dprintf.exp: dprintf
PASS: gdb.base/dprintf.exp: dprintf foo
PASS: gdb.base/dprintf.exp: dprintf 29
PASS: gdb.base/dprintf.exp: dprintf foo,"At foo entry\n"
PASS: gdb.base/dprintf.exp: ignore $bpnum 1
PASS: gdb.base/dprintf.exp: dprintf 26,"arg=%d, g=%d\n", arg, g
PASS: gdb.base/dprintf.exp: dprintf info 1
PASS: gdb.base/dprintf.exp: break 27
PASS: gdb.base/dprintf.exp: 1st dprintf, gdb
PASS: gdb.base/dprintf.exp: 2nd dprintf, gdb
UNSUPPORTED: gdb.base/dprintf.exp: set dprintf style to agent
PASS: gdb.base/dprintf.exp: Set dprintf style to an unrecognized type
And also with the native-gdbserver.exp board hacked with:
set GDBFLAGS "${GDBFLAGS} -ex \"set remote Z-packet off\""
which results in:
(gdb) continue
Continuing.
Warning:
Cannot insert breakpoint 3: Target doesn't support breakpoints that have target side commands.
Cannot insert breakpoint 4: Target doesn't support breakpoints that have target side commands.
(gdb) UNSUPPORTED: gdb.base/dprintf.exp: 1st dprintf, agent
gdb.sum:
Running target native-gdbserver
Running ../../../src/gdb/testsuite/gdb.base/dprintf.exp ...
PASS: gdb.base/dprintf.exp: dprintf
PASS: gdb.base/dprintf.exp: dprintf foo
PASS: gdb.base/dprintf.exp: dprintf 29
PASS: gdb.base/dprintf.exp: dprintf foo,"At foo entry\n"
PASS: gdb.base/dprintf.exp: ignore $bpnum 1
PASS: gdb.base/dprintf.exp: dprintf 26,"arg=%d, g=%d\n", arg, g
PASS: gdb.base/dprintf.exp: dprintf info 1
PASS: gdb.base/dprintf.exp: break 27
PASS: gdb.base/dprintf.exp: 1st dprintf, gdb
PASS: gdb.base/dprintf.exp: 2nd dprintf, gdb
PASS: gdb.base/dprintf.exp: set dprintf style to agent
UNSUPPORTED: gdb.base/dprintf.exp: 1st dprintf, agent
PASS: gdb.base/dprintf.exp: Set dprintf style to an unrecognized type
(One of the new comments mentions breakpoint always-inserted mode.
Actually testing with breakpoint always-inserted mode fails these
dprintf tests, due to the way they are written. But that'll take a
more substancial rewrite of the tests, so I'm leaving that for another
day.)
gdb/testsuite/
2014-03-24 Hui Zhu <hui@codesourcery.com>
Pedro Alves <palves@redhat.com>
PR breakpoints/16101
* gdb.base/dprintf.exp: Use unsupported rather than changing the
test pass/fail messages. Detect missing support for dprintf when
breakpoints are actually inserted.
* gdb.base/mi-dprintf.exp: Detect missing support for dprintf when
breakpoints are actually inserted.
* lib/mi-support.exp (mi_run_cmd_full): Return -1 if continue
fails.
2014-03-24 20:30:50 +01:00
|
|
|
|
2014-03-24 Hui Zhu <hui@codesourcery.com>
|
|
|
|
|
|
Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR breakpoints/16101
|
|
|
|
|
|
* gdb.base/dprintf.exp: Use unsupported rather than changing the
|
|
|
|
|
|
test pass/fail messages. Detect missing support for dprintf when
|
|
|
|
|
|
breakpoints are actually inserted.
|
|
|
|
|
|
* gdb.base/mi-dprintf.exp: Detect missing support for dprintf when
|
|
|
|
|
|
breakpoints are actually inserted.
|
|
|
|
|
|
* lib/mi-support.exp (mi_run_cmd_full): Return -1 if continue
|
|
|
|
|
|
fails.
|
|
|
|
|
|
|
2014-03-24 17:37:32 +01:00
|
|
|
|
2014-03-24 Jan Kratochvil <jan.kratochvil@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/gdb-sigterm.exp (do_test): Remove "set debug lin-lwp 1".
|
|
|
|
|
|
|
2014-03-22 07:44:39 +01:00
|
|
|
|
2014-03-22 Doug Evans <xdje42@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.python/python.exp (python not supported): Verify multi-line
|
|
|
|
|
|
python command issues an error.
|
2014-03-22 07:59:04 +01:00
|
|
|
|
* gdb.guile/guile.exp (guile not supported): Verify multi-line
|
2014-03-22 07:57:08 +01:00
|
|
|
|
guile command issues an error.
|
2014-03-22 07:44:39 +01:00
|
|
|
|
|
2014-03-22 00:51:16 +01:00
|
|
|
|
2014-03-21 Maciej W. Rozycki <macro@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/thread-specific.exp: Handle the lack of usable
|
|
|
|
|
|
$this_breakpoint and $this_thread.
|
|
|
|
|
|
|
2014-03-21 04:11:51 +01:00
|
|
|
|
2014-03-21 Hui Zhu <hui@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/attach.exp (do_command_attach_tests): New.
|
|
|
|
|
|
|
make dprintf.exp pass in target async mode
When target-async is enabled, dprintf.exp fails:
Running ../../../src/gdb/testsuite/gdb.base/dprintf.exp ...
FAIL: gdb.base/dprintf.exp: 1st dprintf, call
FAIL: gdb.base/dprintf.exp: 2nd dprintf, call
FAIL: gdb.base/dprintf.exp: Set dprintf function
FAIL: gdb.base/dprintf.exp: 1st dprintf, fprintf
FAIL: gdb.base/dprintf.exp: 2nd dprintf, fprintf
Breakpoint 2, main (argc=1, argv=0x7fffffffd3f8) at ../../../src/gdb/testsuite/gdb.base/dprintf.c:33
33 int loc = 1234;
(gdb) continue
Continuing.
kickoff 1234
also to stderr 1234
At foo entry
(gdb) FAIL: gdb.base/dprintf.exp: 1st dprintf, call
The problem is that GDB gave the prompt back to the user too early.
This happens when calling functions while handling an event that
doesn't cause a user visible stop. dprintf with "set dprintf-style
gdb" is one such case. This patch adds a test case that has a
breakpoint with a condition that calls a function that returns false,
so that regression testing isn't dependent on the implementation of
dprintf.
The problem happens because run_inferior_call causes GDB to forget
that it is running in sync_execution mode, so any event that runs an
inferior call causes fetch_inferior_event to display the prompt, even
if the event should not result in a user visible stop (that is, gdb
resumes the inferior and waits for the next event).
This patch fixes the issue by noticing when GDB was in sync_execution
mode in run_inferior_call, and taking care to restore this state
afterward.
gdb/
2014-03-20 Tom Tromey <tromey@redhat.com>
PR cli/15718
* infcall.c: Include event-top.h.
(run_inferior_call): Call async_disable_stdin if needed.
gdb/testsuite/
2014-03-20 Tom Tromey <tromey@redhat.com>
Pedro Alves <palves@redhat.com>
PR cli/15718
* gdb.base/condbreak-call-false.c: New file.
* gdb.base/condbreak-call-false.exp: New file.
2014-03-20 18:03:43 +01:00
|
|
|
|
2014-03-20 Tom Tromey <tromey@redhat.com>
|
|
|
|
|
|
Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR cli/15718
|
|
|
|
|
|
* gdb.base/condbreak-call-false.c: New file.
|
|
|
|
|
|
* gdb.base/condbreak-call-false.exp: New file.
|
|
|
|
|
|
|
2014-03-20 15:09:53 +01:00
|
|
|
|
2014-03-20 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/signal-while-stepping-over-bp-other-thread.c (pid):
|
|
|
|
|
|
Delete.
|
|
|
|
|
|
(block_signals, unblock_signals): Delete.
|
|
|
|
|
|
(child_function_2, main): Remove references to deleted variable
|
|
|
|
|
|
and functions.
|
|
|
|
|
|
|
2014-03-20 14:26:33 +01:00
|
|
|
|
2014-03-20 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/signal-while-stepping-over-bp-other-thread.c (main):
|
|
|
|
|
|
Use pthread_kill to signal thread 2.
|
|
|
|
|
|
* gdb.threads/signal-while-stepping-over-bp-other-thread.exp:
|
|
|
|
|
|
Adjust to make the test send itself a signal rather than using the
|
|
|
|
|
|
host's "kill" command.
|
|
|
|
|
|
|
Handle multiple step-overs.
This test fails with current mainline.
If the program stopped for a breakpoint in thread 1, and then the user
switches to thread 2, and resumes the program, GDB first switches back
to thread 1 to step it over the breakpoint, in order to make progress.
However, that logic only considers the last reported event, assuming
only one thread needs that stepping over dance.
That's actually not true when we play with scheduler-locking. The
patch adds an example to the testsuite of multiple threads needing a
step-over before the stepping thread can be resumed. With current
mainline, the program re-traps the same breakpoint it had already
trapped before.
E.g.:
Breakpoint 2, main () at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:99
99 wait_threads (); /* set wait-threads breakpoint here */
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: continue to breakpoint: run to breakpoint
info threads
Id Target Id Frame
3 Thread 0x7ffff77c9700 (LWP 4310) "multiple-step-o" 0x00000000004007ca in child_function_3 (arg=0x1) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:43
2 Thread 0x7ffff7fca700 (LWP 4309) "multiple-step-o" 0x0000000000400827 in child_function_2 (arg=0x0) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:60
* 1 Thread 0x7ffff7fcb740 (LWP 4305) "multiple-step-o" main () at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:99
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: info threads shows all threads
set scheduler-locking on
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: set scheduler-locking on
break 44
Breakpoint 3 at 0x4007d3: file ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c, line 44.
(gdb) break 61
Breakpoint 4 at 0x40082d: file ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c, line 61.
(gdb) thread 3
[Switching to thread 3 (Thread 0x7ffff77c9700 (LWP 4310))]
#0 0x00000000004007ca in child_function_3 (arg=0x1) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:43
43 (*myp) ++;
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: thread 3
continue
Continuing.
Breakpoint 3, child_function_3 (arg=0x1) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:44
44 callme (); /* set breakpoint thread 3 here */
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: continue to breakpoint: run to breakpoint in thread 3
p *myp = 0
$1 = 0
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: unbreak loop in thread 3
thread 2
[Switching to thread 2 (Thread 0x7ffff7fca700 (LWP 4309))]
#0 0x0000000000400827 in child_function_2 (arg=0x0) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:60
60 (*myp) ++;
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: thread 2
continue
Continuing.
Breakpoint 4, child_function_2 (arg=0x0) at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:61
61 callme (); /* set breakpoint thread 2 here */
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: continue to breakpoint: run to breakpoint in thread 2
p *myp = 0
$2 = 0
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: unbreak loop in thread 2
thread 1
[Switching to thread 1 (Thread 0x7ffff7fcb740 (LWP 4305))]
#0 main () at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:99
99 wait_threads (); /* set wait-threads breakpoint here */
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: thread 1
set scheduler-locking off
(gdb) PASS: gdb.threads/multiple-step-overs.exp: step: set scheduler-locking off
At this point all thread are stopped for a breakpoint that needs stepping over.
(gdb) step
Breakpoint 2, main () at ../../../src/gdb/testsuite/gdb.threads/multiple-step-overs.c:99
99 wait_threads (); /* set wait-threads breakpoint here */
(gdb) FAIL: gdb.threads/multiple-step-overs.exp: step
But that "step" retriggers the same breakpoint instead of making
progress.
The patch teaches GDB to step over all breakpoints of all threads
before resuming the stepping thread.
Tested on x86_64 Fedora 17, against pristine mainline, and also my
branch that implements software single-stepping on x86.
gdb/
2014-03-20 Pedro Alves <palves@redhat.com>
* infrun.c (prepare_to_proceed): Delete.
(thread_still_needs_step_over): New function.
(find_thread_needs_step_over): New function.
(proceed): If the current thread needs a step-over, set its
steping_over_breakpoint flag. Adjust to use
find_thread_needs_step_over instead of prepare_to_proceed.
(process_event_stop_test): For BPSTAT_WHAT_STOP_NOISY and
BPSTAT_WHAT_STOP_SILENT, assume the thread stopped for a
breakpoint.
(switch_back_to_stepped_thread): Step over breakpoints of all
threads not the stepping thread, before switching back to the
stepping thread.
gdb/testsuite/
2014-03-20 Pedro Alves <palves@redhat.com>
* gdb.threads/multiple-step-overs.c: New file.
* gdb.threads/multiple-step-overs.exp: New file.
* gdb.threads/signal-while-stepping-over-bp-other-thread.exp:
Adjust expected infrun debug output.
2014-03-20 14:26:32 +01:00
|
|
|
|
2014-03-20 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/multiple-step-overs.c: New file.
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* gdb.threads/multiple-step-overs.exp: New file.
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* gdb.threads/signal-while-stepping-over-bp-other-thread.exp:
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Adjust expected infrun debug output.
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Fix for even more missed events; eliminate thread-hop code.
Even with deferred_step_ptid out of the way, GDB can still lose
watchpoints.
If a watchpoint triggers and the PC points to an address where a
thread-specific breakpoint for another thread is set, the thread-hop
code triggers, and we lose the watchpoint:
if (ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP)
{
int thread_hop_needed = 0;
struct address_space *aspace =
get_regcache_aspace (get_thread_regcache (ecs->ptid));
/* Check if a regular breakpoint has been hit before checking
for a potential single step breakpoint. Otherwise, GDB will
not see this breakpoint hit when stepping onto breakpoints. */
if (regular_breakpoint_inserted_here_p (aspace, stop_pc))
{
if (!breakpoint_thread_match (aspace, stop_pc, ecs->ptid))
thread_hop_needed = 1;
^^^^^^^^^^^^^^^^^^^^^
}
And on software single-step targets, even without a thread-specific
breakpoint in the way, here in the thread-hop code:
else if (singlestep_breakpoints_inserted_p)
{
...
if (!ptid_equal (singlestep_ptid, ecs->ptid)
&& in_thread_list (singlestep_ptid))
{
/* If the PC of the thread we were trying to single-step
has changed, discard this event (which we were going
to ignore anyway), and pretend we saw that thread
trap. This prevents us continuously moving the
single-step breakpoint forward, one instruction at a
time. If the PC has changed, then the thread we were
trying to single-step has trapped or been signalled,
but the event has not been reported to GDB yet.
There might be some cases where this loses signal
information, if a signal has arrived at exactly the
same time that the PC changed, but this is the best
we can do with the information available. Perhaps we
should arrange to report all events for all threads
when they stop, or to re-poll the remote looking for
this particular thread (i.e. temporarily enable
schedlock). */
CORE_ADDR new_singlestep_pc
= regcache_read_pc (get_thread_regcache (singlestep_ptid));
if (new_singlestep_pc != singlestep_pc)
{
enum gdb_signal stop_signal;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: unexpected thread,"
" but expected thread advanced also\n");
/* The current context still belongs to
singlestep_ptid. Don't swap here, since that's
the context we want to use. Just fudge our
state and continue. */
stop_signal = ecs->event_thread->suspend.stop_signal;
ecs->event_thread->suspend.stop_signal = GDB_SIGNAL_0;
ecs->ptid = singlestep_ptid;
ecs->event_thread = find_thread_ptid (ecs->ptid);
ecs->event_thread->suspend.stop_signal = stop_signal;
stop_pc = new_singlestep_pc;
}
else
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: unexpected thread\n");
thread_hop_needed = 1;
stepping_past_singlestep_breakpoint = 1;
saved_singlestep_ptid = singlestep_ptid;
}
}
}
we either end up with thread_hop_needed, ignoring the watchpoint
SIGTRAP, or switch to the stepping thread, again ignoring that the
SIGTRAP could be for some other event.
The new test added by this patch exercises both paths.
So the fix is similar to the deferred_step_ptid fix -- defer the
thread hop to _after_ the SIGTRAP had a change of passing through the
regular bpstat handling. If the wrong thread hits a breakpoint, we'll
just end up with BPSTAT_WHAT_SINGLE, and if nothing causes a stop,
keep_going starts a step-over.
Most of the stepping_past_singlestep_breakpoint mechanism is really
not necessary -- setting the thread to step over a breakpoint with
thread->trap_expected is sufficient to keep all other threads locked.
It's best to still keep the flag in some form though, because when we
get to keep_going, the software single-step breakpoint we need to step
over is already gone -- an optimization done by a follow up patch will
check whether a step-over is still be necessary by looking to see
whether the breakpoint is still there, and would find the thread no
longer needs a step-over, while we still want it.
Special care is still needed to handle the case of PC of the thread we
were trying to single-step having changed, like in the old code. We
can't just keep_going and re-step it, as in that case we can over-step
the thread (if it was already done with the step, but hasn't reported
it yet, we'd ask it to step even further). That's now handled in
switch_back_to_stepped_thread. As bonus, we're now using a technique
that doesn't lose signals, unlike the old code -- we now insert a
breakpoint at PC, and resume, which either reports the breakpoint
immediately, or any pending signal.
Tested on x86_64 Fedora 17, against pristine mainline, and against a
branch that implements software single-step on x86.
gdb/
2014-03-20 Pedro Alves <palves@redhat.com>
* breakpoint.c (single_step_breakpoint_inserted_here_p): Make
extern.
* breakpoint.h (single_step_breakpoint_inserted_here_p): Declare.
* infrun.c (saved_singlestep_ptid)
(stepping_past_singlestep_breakpoint): Delete.
(resume): Remove stepping_past_singlestep_breakpoint handling.
(proceed): Store the prev_pc of the stepping thread too.
(init_wait_for_inferior): Adjust. Clear singlestep_ptid and
singlestep_pc.
(enum infwait_states): Delete infwait_thread_hop_state.
(struct execution_control_state) <hit_singlestep_breakpoint>: New
field.
(handle_inferior_event): Adjust.
(handle_signal_stop): Delete stepping_past_singlestep_breakpoint
handling and the thread-hop code. Before removing single-step
breakpoints, check whether the thread hit a single-step breakpoint
of another thread. If it did, the trap is not a random signal.
(switch_back_to_stepped_thread): If the event thread hit a
single-step breakpoint, unblock it before switching to the
stepping thread. Handle the case of the stepped thread having
advanced already.
(keep_going): Handle the case of the current thread moving past a
single-step breakpoint.
gdb/testsuite/
2014-03-20 Pedro Alves <palves@redhat.com>
* gdb.threads/step-over-trips-on-watchpoint.c: New file.
* gdb.threads/step-over-trips-on-watchpoint.exp: New file.
2014-03-20 14:26:32 +01:00
|
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|
2014-03-20 Pedro Alves <palves@redhat.com>
|
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|
* gdb.threads/step-over-trips-on-watchpoint.c: New file.
|
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|
* gdb.threads/step-over-trips-on-watchpoint.exp: New file.
|
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|
PR breakpoints/7143 - Watchpoint does not trigger when first set
Say the program is stopped at a breakpoint, and the user sets a
watchpoint. When the program is next resumed, GDB will first step
over the breakpoint, as explained in the manual:
@value {GDBN} normally ignores breakpoints when it resumes
execution, until at least one instruction has been executed. If it
it did not do this, you would be unable to proceed past a breakpoint
without first disabling the breakpoint. This rule applies whether
or not the breakpoint already existed when your program stopped.
However, GDB currently also removes watchpoints, catchpoints, etc.,
and that means that the first instruction off the breakpoint does not
trigger the watchpoint, catchpoint, etc.
testsuite/gdb.base/watchpoint.exp has a kfail for this.
The PR proposes installing watchpoints only when stepping over a
breakpoint, but that misses catchpoints, etc.
A better fix would instead work from the opposite direction -- remove
only real breakpoints, leaving all other kinds of breakpoints
inserted.
But, going further, it's really a waste to constantly remove/insert
all breakpoints when stepping over a single breakpoint (generating a
pair of RSP z/Z packets for each breakpoint), so the fix goes a step
further and makes GDB remove _only_ the breakpoint being stepped over,
leaving all others installed. This then has the added benefit of
reducing breakpoint-related RSP traffic substancialy when there are
many breakpoints set.
gdb/
2014-03-20 Pedro Alves <palves@redhat.com>
PR breakpoints/7143
* breakpoint.c (should_be_inserted): Don't insert breakpoints that
are being stepped over.
(breakpoint_address_match): Make extern.
* breakpoint.h (breakpoint_address_match): New declaration.
* inferior.h (stepping_past_instruction_at): New declaration.
* infrun.c (struct step_over_info): New type.
(step_over_info): New global.
(set_step_over_info, clear_step_over_info)
(stepping_past_instruction_at): New functions.
(handle_inferior_event): Clear the step-over info when
trap_expected is cleared.
(resume): Remove now stale comment.
(clear_proceed_status): Clear step-over info.
(proceed): Adjust step-over handling to set or clear the step-over
info instead of removing all breakpoints.
(handle_signal_stop): When setting up a thread-hop, don't remove
breakpoints here.
(stop_stepping): Clear step-over info.
(keep_going): Adjust step-over handling to set or clear step-over
info and then always inserting breakpoints, instead of removing
all breakpoints when stepping over one.
gdb/testsuite/
2014-03-20 Pedro Alves <palves@redhat.com>
PR breakpoints/7143
* gdb.base/watchpoint.exp: Mention bugzilla bug number instead of
old gnats gdb/38. Remove kfail. Adjust to use gdb_test instead
of gdb_test_multiple.
* gdb.cp/annota2.exp: Remove kfail for gdb/38.
* gdb.cp/annota3.exp: Remove kfail for gdb/38.
2014-03-20 14:26:32 +01:00
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2014-03-20 Pedro Alves <palves@redhat.com>
|
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|
PR breakpoints/7143
|
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|
* gdb.base/watchpoint.exp: Mention bugzilla bug number instead of
|
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|
|
|
|
old gnats gdb/38. Remove kfail. Adjust to use gdb_test instead
|
|
|
|
|
|
of gdb_test_multiple.
|
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|
|
|
|
* gdb.cp/annota2.exp: Remove kfail for gdb/38.
|
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|
|
|
|
* gdb.cp/annota3.exp: Remove kfail for gdb/38.
|
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|
|
|
|
|
Fix missing breakpoint/watchpoint hits, eliminate deferred_step_ptid.
Consider the case of the user doing "step" in thread 2, while thread 1
had previously stopped for a breakpoint. In order to make progress,
GDB makes thread 1 step over its breakpoint first (with all other
threads stopped), and once that is over, thread 2 then starts stepping
(with thread 1 and all others running free, by default). If GDB
didn't do that, thread 1 would just trip on the same breakpoint
immediately again. This is what the prepare_to_proceed /
deferred_step_ptid code is all about.
However, deferred_step_ptid code resumes the target with:
resume (1, GDB_SIGNAL_0);
prepare_to_wait (ecs);
return;
Recall we were just stepping over a breakpoint when we get here. That
means that _nothing_ had installed breakpoints yet! If there's
another breakpoint just after the breakpoint that was just stepped,
we'll miss it. The fix for that would be to use keep_going instead.
However, there are more problems. What if the instruction that was
just single-stepped triggers a watchpoint? Currently, GDB just
happily resumes the thread, losing that too...
Missed watchpoints will need yet further fixes, but we should keep
those in mind.
So the fix must be to let the trap fall through the regular bpstat
handling, and only if no breakpoint, watchpoint, etc. claims the trap,
shall we switch back to the stepped thread.
Now, nowadays, we have code at the tail end of trap handling that does
exactly that -- switch back to the stepped thread
(switch_back_to_the_stepped_thread).
So the deferred_step_ptid code is just standing in the way, and can
simply be eliminated, fixing bugs in the process. Sweet.
The comment about spurious "Switching to ..." made me pause, but is
actually stale nowadays. That isn't needed anymore.
previous_inferior_ptid used to be re-set at each (internal) event, but
now it's only touched in proceed and normal stop.
The two tests added by this patch fail without the fix.
Tested on x86_64 Fedora 17 (also against my software single-stepping
on x86 branch).
gdb/
2014-03-20 Pedro Alves <palves@redhat.com>
* infrun.c (previous_inferior_ptid): Adjust comment.
(deferred_step_ptid): Delete.
(infrun_thread_ptid_changed, prepare_to_proceed)
(init_wait_for_inferior): Adjust.
(handle_signal_stop): Delete deferred_step_ptid handling.
gdb/testsuite/
2014-03-20 Pedro Alves <palves@redhat.com>
* gdb.threads/step-over-lands-on-breakpoint.c: New file.
* gdb.threads/step-over-lands-on-breakpoint.exp: New file.
2014-03-20 14:26:31 +01:00
|
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|
2014-03-20 Pedro Alves <palves@redhat.com>
|
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|
* gdb.threads/step-over-lands-on-breakpoint.c: New file.
|
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|
* gdb.threads/step-over-lands-on-breakpoint.exp: New file.
|
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|
2014-03-19 14:05:43 +01:00
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2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
* gdb.base/async.exp: Remove early return.
|
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2014-03-19 16:22:45 +01:00
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2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
* gdb.base/async.exp (step& tests): Pass explicit test messages.
|
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2014-03-19 16:22:45 +01:00
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|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
|
* gdb.base/async.exp (test_background): Expect \r\n after
|
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|
|
"completed." in the fail pattern.
|
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2014-03-19 16:22:45 +01:00
|
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|
|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
|
|
|
|
|
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|
|
* gdb.base/async.exp (test_background): New procedure.
|
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|
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|
|
Use it for all background execution command tests.
|
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|
|
2014-03-19 16:22:44 +01:00
|
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|
|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
|
* gdb.base/async.exp: Use prepare_for_testing.
|
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|
2014-03-19 16:22:44 +01:00
|
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|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
* gdb.base/async.c (foo): Make 'x' volatile. Write to it twice in
|
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|
the same line.
|
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2014-03-19 16:22:44 +01:00
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|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
|
* gdb.base/async.c (main): Add "jump here" and "until here" line
|
|
|
|
|
|
marker comments.
|
|
|
|
|
|
* gdb.base/async.exp (jump_here): New global.
|
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|
|
|
|
(jump& test): Use it.
|
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|
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|
|
(until_here): New global.
|
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|
(until& test): Use it.
|
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|
2014-03-19 16:22:44 +01:00
|
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|
|
2014-03-19 Pedro Alves <palves@redhat.com>
|
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|
|
|
|
|
|
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|
|
* gdb.base/async.exp: Don't frob gdb_protocol.
|
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|
2014-03-19 00:19:51 +01:00
|
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|
|
2014-03-18 Doug Evans <xdje42@gmail.com>
|
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|
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|
|
|
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|
|
* gdb.base/async.exp: Whitespace fixes. Turn on target-async.
|
|
|
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|
|
Fix spelling of exec-done-display.
|
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|
2014-03-18 22:48:06 +01:00
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|
2014-03-18 Jan Kratochvil <jan.kratochvil@redhat.com>
|
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PR gdb/15358
|
|
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|
|
|
* gdb.base/gdb-sigterm.c: New file.
|
|
|
|
|
|
* gdb.base/gdb-sigterm.exp: New file.
|
|
|
|
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|
|
PR gdb/13860: make "-exec-foo"'s MI output equal to "foo"'s MI output.
Part of PR gdb/13860 is about the mi-solib.exp test's output being
different in sync vs async modes.
sync:
>./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async off" -i=mi
=thread-group-added,id="i1"
~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..."
~"done.\n"
(gdb)
&"start\n"
~"Temporary breakpoint 1 at 0x400608: file ../../../src/gdb/testsuite/gdb.mi/solib-main.c, line 21.\n"
=breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400608",func="main",file="../../../src/gdb/testsuite/gdb.mi/solib-main.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/solib-main.c",line="21",times="0",original-location="main"}
~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n"
=thread-group-started,id="i1",pid="17724"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
(gdb)
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
~"Stopped due to shared library event (no libraries added or removed)\n"
*stopped,reason="solib-event",frame={addr="0x000000379180f990",func="_dl_debug_state",args=[],from="/lib64/ld-linux-x86-64.so.2"},thread-id="1",stopped-threads="all",core="3"
(gdb)
async:
>./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async on" -i=mi
=thread-group-added,id="i1"
~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..."
~"done.\n"
(gdb)
start
&"start\n"
~"Temporary breakpoint 1 at 0x400608: file ../../../src/gdb/testsuite/gdb.mi/solib-main.c, line 21.\n"
=breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400608",func="main",file="../../../src/gdb/testsuite/gdb.mi/solib-main.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/solib-main.c",line="21",times="0",original-location="main"}
~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n"
=thread-group-started,id="i1",pid="17729"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
(gdb)
*stopped,reason="solib-event",thread-id="1",stopped-threads="all",core="1"
For now, let's focus only on the *stopped event. We see that the
async output is missing frame info. And this causes a test failure in
async mode, as "mi_expect_stop solib-event" wants to see the frame
info.
However, if we compare the event output when a real MI execution
command is used, compared to a CLI command (e.g., run vs -exec-run,
next vs -exec-next, etc.), we see:
>./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async off" -i=mi
=thread-group-added,id="i1"
~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..."
~"done.\n"
(gdb)
r
&"r\n"
~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n"
=thread-group-started,id="i1",pid="17751"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
(gdb)
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
~"Stopped due to shared library event (no libraries added or removed)\n"
*stopped,reason="solib-event",frame={addr="0x000000379180f990",func="_dl_debug_state",args=[],from="/lib64/ld-linux-x86-64.so.2"},thread-id="1",stopped-threads="all",core="3"
(gdb)
-exec-run
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
=library-unloaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",thread-group="i1"
=thread-group-started,id="i1",pid="17754"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
(gdb)
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
*stopped,reason="solib-event",thread-id="1",stopped-threads="all",core="1"
=thread-selected,id="1"
(gdb)
As seen above, with MI commands, the *stopped event _doesn't_ have
frame info. This is because normal_stop, as commanded by the result
of bpstat_print, skips printing frame info in this case (it's an
"event", not a "breakpoint"), and when the interpreter is MI,
mi_on_normal_stop skips calling print_stack_frame, as the normal_stop
call was already done with the MI uiout. This explains why the async
output is different even with a CLI command. Its because in async
mode, the mi_on_normal_stop path is always taken; it is always reached
with the MI uiout, because the stop is handled from the event loop,
instead of from within `proceed -> wait_for_inferior -> normal_stop'
with the interpreter overridden, as in sync mode.
This patch fixes the issue by making all cases output the same
*stopped event, by factoring out the print code from normal_stop, and
using it from mi_on_normal_stop as well. I chose the *stopped output
without a frame, mainly because that is what you already get if you
use MI execution commands, the commands frontends are supposed to use
(except when implementing a console). This patch makes it simpler to
tweak the MI output differently if desired, as we only have to change
the centralized print_stop_event (taking into account whether the
uiout is MI-like), and all different modes will change accordingly.
Tested on x86_64 Fedora 17, no regressions. The mi-solib.exp test no
longer fails in async mode with this patch, so the patch removes the
kfail.
2014-03-18 Pedro Alves <palves@redhat.com>
PR gdb/13860
* inferior.h (print_stop_event): Declare.
* infrun.c (print_stop_event): New, factored out from ...
(normal_stop): ... this.
* mi/mi-interp.c (mi_on_normal_stop): Use print_stop_event instead
of bpstat_print/print_stack_frame.
2014-03-18 Pedro Alves <palves@redhat.com>
PR gdb/13860
* gdb.mi/mi-solib.exp: Remove gdb/13860 kfail.
* lib/mi-support.exp (mi_expect_stop): Add special handling for
solib-event.
2014-03-18 18:50:28 +01:00
|
|
|
|
2014-03-18 Pedro Alves <palves@redhat.com>
|
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|
|
PR gdb/13860
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|
* gdb.mi/mi-solib.exp: Remove gdb/13860 kfail.
|
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|
|
* lib/mi-support.exp (mi_expect_stop): Add special handling for
|
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|
|
solib-event.
|
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|
2014-03-17 16:41:48 +01:00
|
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|
|
2014-03-17 Joel Brobecker <brobecker@adacore.com>
|
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|
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|
|
* gdb.ada/pckd_arr_ren: New testcase.
|
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2014-03-13 17:55:12 +01:00
|
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|
2014-03-13 Doug Evans <xdje42@gmail.com>
|
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|
PR guile/16612
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|
* gdb.guile/scm-value.ep (test_value_after_death): Do a garbage
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|
collect after discarding symbols.
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|
2014-03-13 17:24:19 +01:00
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2014-03-13 Ludovic Courtès <ludo@gnu.org>
|
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|
Doug Evans <xdje42@gmail.com>
|
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* gdb.guile/scm-value.exp (test_value_in_inferior): Verify value added
|
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|
to history survives a gc.
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2014-03-12 13:40:40 +01:00
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2014-03-13 Pedro Alves <palves@redhat.com>
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* gdb.base/default.exp: Don't test "target procfs".
|
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2014-03-13 13:02:24 +01:00
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2014-03-13 Pedro Alves <palves@redhat.com>
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* gdb.base/default.exp: Update "target child" and "target procfs"
|
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|
tests to not expect "Unix".
|
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|
fix regressions with target-async
A patch in the target cleanup series caused a regression when using
record with target-async. Version 4 of the patch is here:
https://sourceware.org/ml/gdb-patches/2014-03/msg00159.html
The immediate problem is that record supplies to_can_async_p and
to_is_async_p methods, but does not supply a to_async method. So,
when target-async is set, record claims to support async -- but if the
underlying target does not support async, then the to_async method
call will end up in that method's default implementation, namely
tcomplain.
This worked previously because the record target used to provide a
to_async method; one that (erroneously, only at push time) checked the
other members of the target stack, and then simply dropped to_async
calls in the "does not implement async" case.
My first thought was to simply drop tcomplain as the default for
to_async. This works, but Pedro pointed out that the only reason
record has to supply to_can_async_p and to_is_async_p is that these
default to using the find_default_run_target machinery -- and these
defaults are only needed by "run" and "attach".
So, a nicer solution presents itself: change run and attach to
explicitly call into the default run target when needed; and change
to_is_async_p and to_can_async_p to default to "return 0". This makes
the target stack simpler to use and lets us remove the method
implementations from record. This is also in harmony with other plans
for the target stack; namely trying to reduce the impact of
find_default_run_target. This approach makes it clear that
find_default_is_async_p is not needed -- it is asking whether a target
that may not even be pushed is actually async, which seems like a
nonsensical question.
While an improvement, this approach proved to introduce the same bug
when using the core target. Looking a bit deeper, the issue is that
code in "attach" and "run" may need to use either the current target
stack or the default run target -- but different calls into the target
API in those functions could wind up querying different targets.
This new patch makes the target to use more explicit in "run" and
"attach". Then these commands explicitly make the needed calls
against that target. This ensures that a single target is used for
all relevant operations. This lets us remove a couple find_default_*
functions from various targets, including the dummy target. I think
this is a decent understandability improvement.
One issue I see with this patch is that the new calls in "run" and
"attach" are not very much like the rest of the target API. I think
fundamentally this is due to bad factoring in the target API, which
may need to be fixed for multi-target. Tackling that seemed ambitious
for a regression fix.
While working on this I noticed that there don't seem to be any test
cases that involve both target-async and record, so this patch changes
break-precsave.exp to add some. It also changes corefile.exp to add
some target-async tests; these pass with current trunk and with this
patch applied, but fail with the v1 patch.
This patch differs from v4 in that it moves initialization of
to_can_async_p and to_supports_non_stop into inf-child, adds some
assertions to complete_target_initialization, and adds some comments
to target.h.
Built and regtested on x86-64 Fedora 20.
2014-03-12 Tom Tromey <tromey@redhat.com>
* inf-child.c (return_zero): New function.
(inf_child_target): Set to_can_async_p, to_supports_non_stop.
* aix-thread.c (aix_thread_inferior_created): New function.
(aix_thread_attach): Remove.
(init_aix_thread_ops): Don't set to_attach.
(_initialize_aix_thread): Register inferior_created observer.
* corelow.c (init_core_ops): Don't set to_attach or
to_create_inferior.
* exec.c (init_exec_ops): Don't set to_attach or
to_create_inferior.
* infcmd.c (run_command_1): Use find_run_target. Make direct
target calls.
(attach_command): Use find_attach_target. Make direct target
calls.
* record-btrace.c (init_record_btrace_ops): Don't set
to_create_inferior.
* record-full.c (record_full_can_async_p, record_full_is_async_p):
Remove.
(init_record_full_ops, init_record_full_core_ops): Update. Don't
set to_create_inferior.
* target.c (complete_target_initialization): Add assertion.
(target_create_inferior): Remove.
(find_default_attach, find_default_create_inferior): Remove.
(find_attach_target, find_run_target): New functions.
(find_default_is_async_p, find_default_can_async_p)
(target_supports_non_stop, target_attach): Remove.
(init_dummy_target): Don't set to_create_inferior or
to_supports_non_stop.
* target.h (struct target_ops) <to_attach>: Add comment. Remove
TARGET_DEFAULT_FUNC.
<to_create_inferior>: Add comment.
<to_can_async_p, to_is_async_p, to_supports_non_stop>: Use
TARGET_DEFAULT_RETURN.
<to_can_async_p, to_supports_non_stop, to_can_run>: Add comments.
(find_attach_target, find_run_target): Declare.
(target_create_inferior): Remove.
(target_has_execution_1): Update comment.
(target_supports_non_stop): Remove.
* target-delegates.c: Rebuild.
2014-03-12 Tom Tromey <tromey@redhat.com>
* gdb.base/corefile.exp (corefile_test_run, corefile_test_attach):
New procs. Add target-async tests.
* gdb.reverse/break-precsave.exp (precsave_tests): New proc.
Add target-async tests.
2014-02-28 17:47:34 +01:00
|
|
|
|
2014-03-12 Tom Tromey <tromey@redhat.com>
|
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|
|
* gdb.base/corefile.exp (corefile_test_run, corefile_test_attach):
|
|
|
|
|
|
New procs. Add target-async tests.
|
|
|
|
|
|
* gdb.reverse/break-precsave.exp (precsave_tests): New proc.
|
|
|
|
|
|
Add target-async tests.
|
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|
|
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|
|
2014-03-07 13:23:47 +01:00
|
|
|
|
2014-03-12 Andreas Arnez <arnez@linux.vnet.ibm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-ifort-parameter.c (func): Define labels
|
|
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|
|
'func_start' and 'func_end' for the beginning and end of the
|
|
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|
|
function code, respectively.
|
|
|
|
|
|
* gdb.dwarf2/dw2-ifort-parameter.exp: Use 'func_start' and
|
|
|
|
|
|
'func_end' instead of 'func' and 'main'.
|
|
|
|
|
|
|
2014-03-07 12:52:54 +01:00
|
|
|
|
2014-03-12 Andreas Arnez <arnez@linux.vnet.ibm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-ifort-parameter-debug.S: Remove.
|
|
|
|
|
|
* gdb.dwarf2/dw2-ifort-parameter.exp: Use Dwarf::assemble to
|
|
|
|
|
|
generate the debug info assembler source.
|
|
|
|
|
|
|
2014-03-07 12:45:49 +01:00
|
|
|
|
2014-03-12 Andreas Arnez <arnez@linux.vnet.ibm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/arr-stride.exp: Exploit 'prepare_for_testing'.
|
|
|
|
|
|
* gdb.dwarf2/arr-subrange.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/dwz.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/method-ptr.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/missing-sig-type.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/subrange.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/implptrconst.exp: Exploit 'build_executable'.
|
|
|
|
|
|
* gdb.dwarf2/implptrpiece.exp: Likewise.
|
|
|
|
|
|
* gdb.dwarf2/nostaticblock.exp: Likewise.
|
|
|
|
|
|
|
2014-03-07 11:23:42 +01:00
|
|
|
|
2014-03-12 Andreas Arnez <arnez@linux.vnet.ibm.com>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (build_executable_from_specs): Don't prepend source
|
|
|
|
|
|
directory to absolute path name arguments.
|
|
|
|
|
|
|
2014-02-12 12:08:23 +01:00
|
|
|
|
2014-03-10 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.ada/tagged_access: New testcase.
|
|
|
|
|
|
|
2014-03-05 11:17:35 +01:00
|
|
|
|
2014-03-07 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/data.exp: Update expected output.
|
|
|
|
|
|
|
2014-02-15 01:48:53 +01:00
|
|
|
|
2014-03-06 Yao Qi <yao@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.trace/pr16508.exp: New file.
|
|
|
|
|
|
|
PR gdb/16575: stale breakpoint instructions in the code cache
In non-stop mode, or rather, breakpoints always-inserted mode, the
code cache can easily end up with stale breakpoint instructions:
All it takes is filling a cache line when breakpoints already exist in
that memory region, and then delete the breakpoint.
Vis. (from the new test):
(gdb) set breakpoint always-inserted on
(gdb) b 23
Breakpoint 2 at 0x400540: file ../../../src/gdb/testsuite/gdb.base/breakpoint-shadow.c, line 23.
(gdb) b 24
Breakpoint 3 at 0x400547: file ../../../src/gdb/testsuite/gdb.base/breakpoint-shadow.c, line 24.
disass main
Dump of assembler code for function main:
0x000000000040053c <+0>: push %rbp
0x000000000040053d <+1>: mov %rsp,%rbp
=> 0x0000000000400540 <+4>: movl $0x1,-0x4(%rbp)
0x0000000000400547 <+11>: movl $0x2,-0x4(%rbp)
0x000000000040054e <+18>: mov $0x0,%eax
0x0000000000400553 <+23>: pop %rbp
0x0000000000400554 <+24>: retq
End of assembler dump.
So far so good. Now flush the code cache:
(gdb) set code-cache off
(gdb) set code-cache on
Requesting a disassembly works as expected, breakpoint shadowing is
applied:
(gdb) disass main
Dump of assembler code for function main:
0x000000000040053c <+0>: push %rbp
0x000000000040053d <+1>: mov %rsp,%rbp
=> 0x0000000000400540 <+4>: movl $0x1,-0x4(%rbp)
0x0000000000400547 <+11>: movl $0x2,-0x4(%rbp)
0x000000000040054e <+18>: mov $0x0,%eax
0x0000000000400553 <+23>: pop %rbp
0x0000000000400554 <+24>: retq
End of assembler dump.
However, now delete the breakpoints:
(gdb) delete
Delete all breakpoints? (y or n) y
And disassembly shows the old breakpoint instructions:
(gdb) disass main
Dump of assembler code for function main:
0x000000000040053c <+0>: push %rbp
0x000000000040053d <+1>: mov %rsp,%rbp
=> 0x0000000000400540 <+4>: int3
0x0000000000400541 <+5>: rex.RB cld
0x0000000000400543 <+7>: add %eax,(%rax)
0x0000000000400545 <+9>: add %al,(%rax)
0x0000000000400547 <+11>: int3
0x0000000000400548 <+12>: rex.RB cld
0x000000000040054a <+14>: add (%rax),%al
0x000000000040054c <+16>: add %al,(%rax)
0x000000000040054e <+18>: mov $0x0,%eax
0x0000000000400553 <+23>: pop %rbp
0x0000000000400554 <+24>: retq
End of assembler dump.
Those breakpoint instructions are no longer installed in target memory
they're stale in the code cache. Easily confirmed by just disabling
the code cache:
(gdb) set code-cache off
(gdb) disass main
Dump of assembler code for function main:
0x000000000040053c <+0>: push %rbp
0x000000000040053d <+1>: mov %rsp,%rbp
=> 0x0000000000400540 <+4>: movl $0x1,-0x4(%rbp)
0x0000000000400547 <+11>: movl $0x2,-0x4(%rbp)
0x000000000040054e <+18>: mov $0x0,%eax
0x0000000000400553 <+23>: pop %rbp
0x0000000000400554 <+24>: retq
End of assembler dump.
I stumbled upon this when writing a patch to infrun.c, that made
handle_inferior_event & co fill in the cache before breakpoints were
removed from the target. Recall that wait_for_inferior flushes the
dcache for every event. So in that case, always-inserted mode was not
necessary to trigger this. It's just a convenient way to expose the
issue.
The dcache works at the raw memory level. We need to update it
whenever memory is written, no matter what kind of target memory
object was originally passed down by the caller. The issue is that
the dcache update code isn't reached when a caller explicitly writes
raw memory. Breakpoint insertion/removal is one such case --
mem-break.c uses target_write_read_memory/target_write_raw_memory.
The fix is to move the dcache update code from memory_xfer_partial_1
to raw_memory_xfer_partial so that it's always reachable.
When we do that, we can actually simplify a series of things.
memory_xfer_partial_1 no longer needs to handle writes for any kind of
memory object, and therefore dcache_xfer_memory no longer needs to
handle writes either. So the latter (dcache_xfer_memory) and its
callees can be simplified to only care about reads. While we're
touching dcache_xfer_memory's prototype, might as well rename it to
reflect that fact that it only handles reads, and make it follow the
new target_xfer_status/xfered_len style. This made me notice that
dcache_xfer_memory loses the real error status if a memory read fails:
we could have failed to read due to TARGET_XFER_E_UNAVAILABLE, for
instance, but we always return TARGET_XFER_E_IO, hence the FIXME note.
I felt that fixing that fell out of the scope of this patch.
Currently dcache_xfer_memory handles the case of a write failing. The
whole cache line is invalidated when that happens. However,
dcache_update, the sole mechanism for handling writes that will remain
after the patch, does not presently handle that scenario. That's a
bug. The patch makes it handle that, by passing down the
target_xfer_status status from the caller, so that it can better
decide what to do itself. While I was changing the function's
prototype, I constified the myaddr parameter, getting rid of the need
for the cast as seen in its existing caller.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/
2014-03-05 Pedro Alves <palves@redhat.com>
PR gdb/16575
* dcache.c (dcache_poke_byte): Constify ptr parameter. Return
void. Update comment.
(dcache_xfer_memory): Delete.
(dcache_read_memory_partial): New, based on the read bits of
dcache_xfer_memory.
(dcache_update): Add status parameter. Use ULONGEST for len, and
adjust. Discard cache lines if the reason for the update was
error.
* dcache.h (dcache_xfer_memory): Delete declaration.
(dcache_read_memory_partial): New declaration.
(dcache_update): Update prototype.
* target.c (raw_memory_xfer_partial): Update the dcache here.
(memory_xfer_partial_1): Don't handle dcache writes here.
gdb/testsuite/
2014-03-05 Pedro Alves <palves@redhat.com>
PR gdb/16575
* gdb.base/breakpoint-shadow.exp (compare_disassembly): New
procedure.
(top level): Adjust to use it. Add tests that exercise breakpoint
interaction with the code-cache.
2014-03-05 15:18:28 +01:00
|
|
|
|
2014-03-05 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR gdb/16575
|
|
|
|
|
|
* gdb.base/breakpoint-shadow.exp (compare_disassembly): New
|
|
|
|
|
|
procedure.
|
|
|
|
|
|
(top level): Adjust to use it. Add tests that exercise breakpoint
|
|
|
|
|
|
interaction with the code-cache.
|
|
|
|
|
|
|
2014-02-18 23:35:46 +01:00
|
|
|
|
2014-02-26 Ludovic Courtès <ludo@gnu.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.guile/scm-value.exp (test_value_in_inferior): Add
|
|
|
|
|
|
test for 'history-append!'.
|
|
|
|
|
|
|
DWARF: Read constant-class addresses correctly
Starting with DWARF version 4, the description of the DW_AT_high_pc
attribute was amended to say:
if it is of class constant, the value is an unsigned integer offset
which when added to the low PC gives the address of the first
location past the last instruction associated with the entity.
A change was made in Apr 27th, 2012 to reflect that change:
| commit 91da14142c0171e58a91ad58a32fd010b700e761
| Author: Mark Wielaard <mjw@redhat.com>
| Date: Fri Apr 27 18:55:19 2012 +0000
|
| * dwarf2read.c (dwarf2_get_pc_bounds): Check DW_AT_high_pc form to
| see whether it is an address or a constant offset from DW_AT_low_pc.
| (dwarf2_record_block_ranges): Likewise.
| (read_partial_die): Likewise.
Unfortunately, this new interpretation is now used regardless of
the CU's DWARF version. It turns out that one of WindRiver's compilers
(FTR: Diabdata 4.4) is generating DWARF version 2 info with
DW_AT_high_pc attributes improperly using the data4 form. Because of
that, we miscompute all high PCs incorrectly. This leads to a lot of
symtabs having overlapping ranges, which in turn causes havoc in
pc-to-symtab-and-line translations.
One visible effect is when inserting a breakpoint on a given function:
(gdb) b world
Breakpoint 1 at 0x4005c4
The source location of the breakpoint is missing. The output should be:
(gdb) b world
Breakpoint 1 at 0x4005c8: file dw2-rel-hi-pc-world.c, line 24.
What happens in this case is that the pc-to-SAL translation first
starts be trying to find the symtab associated to our PC using
each symtab's ranges. Because of the high_pc miscomputation,
many symtabs end up matching, and the heuristic trying to select
the most probable one unfortunately returns one that is unrelated
(it really had no change in this case to do any better). Once we
have the wrong symtab, the start searching the associated linetable,
where the addresses are correct, thus finding no match, and therefore
no SAL.
This patch is an attempt at handling the situation as gracefully
as we can, without guarantees. It introduces a new function
"attr_value_as_address" which uses the correct accessor for getting
the value of a given attribute. It then adjust the code throughout
this unit to use this function instead of assuming that addresses always
have the DW_FORM_addr format.
It also fixes the original issue of miscomputing the high_pc
by limiting the new interpretation of constant form DW_AT_high_pc
attributes to units using DWARF version 4 or later.
gdb/ChangeLog:
* dwarf2read.c (attr_value_as_address): New function.
(dwarf2_find_base_address, read_call_site_scope): Use
attr_value_as_address in place of DW_ADDR.
(dwarf2_get_pc_bounds): Use attr_value_as_address to get
the low and high addresses. Slight rework of the handling
of the high pc being a constant form, and limit it to
DWARF verson 4 or higher.
(dwarf2_record_block_ranges): Likewise.
(read_partial_die): Likewise.
(new_symbol_full): Use attr_value_as_address in place of DW_ADDR.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/dw2-abs-hi-pc-hello-dbg.S: New file.
* gdb.dwarf2/dw2-abs-hi-pc-hello.c: New file.
* gdb.dwarf2/dw2-abs-hi-pc-world-dbg.S: New file.
* gdb.dwarf2/dw2-abs-hi-pc-world.c: New file.
* gdb.dwarf2/dw2-abs-hi-pc.c: New file.
* gdb.dwarf2/dw2-abs-hi-pc.exp: New file.
Tested on x86_64-linux.
2014-02-15 16:09:58 +01:00
|
|
|
|
2014-02-26 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-abs-hi-pc-hello-dbg.S: New file.
|
|
|
|
|
|
* gdb.dwarf2/dw2-abs-hi-pc-hello.c: New file.
|
|
|
|
|
|
* gdb.dwarf2/dw2-abs-hi-pc-world-dbg.S: New file.
|
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|
|
|
* gdb.dwarf2/dw2-abs-hi-pc-world.c: New file.
|
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|
|
* gdb.dwarf2/dw2-abs-hi-pc.c: New file.
|
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|
* gdb.dwarf2/dw2-abs-hi-pc.exp: New file.
|
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|
2014-01-30 04:37:08 +01:00
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|
2014-02-26 Joel Brobecker <brobecker@adacore.com>
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|
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* testsuite/gdb.python/py-pp-re-notag.c: New file.
|
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* testsuite/gdb.python/py-pp-re-notag.ex: New file.
|
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* testsuite/gdb.python/py-pp-re-notag.p: New file.
|
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|
DWARF: Set enum type "flag_enum" and "unsigned" flags at type creation.
Consider the following Ada code:
-- An array whose index is an enumeration type with 128 enumerators.
type Enum_T is (Enum_000, Enum_001, [...], Enum_128);
type Table is array (Enum_T) of Boolean;
When the compiler is configured to generate pure DWARF debugging info,
trying to print type Table's description yields:
ptype pck.table
type = array (enum_000 .. -128) of boolean
The expected output was:
ptype pck.table
type = array (enum_000 .. enum_128) of boolean
The DWARF debugging info for our array looks like this:
<1><44>: Abbrev Number: 5 (DW_TAG_array_type)
<45> DW_AT_name : pck__table
<50> DW_AT_type : <0x28>
<2><54>: Abbrev Number: 6 (DW_TAG_subrange_type)
<55> DW_AT_type : <0x5c>
<59> DW_AT_lower_bound : 0
<5a> DW_AT_upper_bound : 128
The array index type is, by construction with the DWARF standard,
a subrange of our enumeration type, defined as follow:
<2><5b>: Abbrev Number: 0
<1><5c>: Abbrev Number: 7 (DW_TAG_enumeration_type)
<5d> DW_AT_name : pck__enum_t
<69> DW_AT_byte_size : 1
<2><6b>: Abbrev Number: 8 (DW_TAG_enumerator)
<6c> DW_AT_name : pck__enum_000
<7a> DW_AT_const_value : 0
[etc]
Therefore, while processing these DIEs, the array index type ends
up being a TYPE_CODE_RANGE whose target type is our enumeration type.
But the problem is that we read the upper bound as a negative value
(-128), which is then used as is by the type printer to print the
array upper bound. This negative value explains the "-128" in the
output.
To understand why the range type's upper bound is read as a negative
value, one needs to look at how it is determined, in read_subrange_type:
orig_base_type = die_type (die, cu);
base_type = check_typedef (orig_base_type);
[... high is first correctly read as 128, but then ...]
if (!TYPE_UNSIGNED (base_type) && (high & negative_mask))
high |= negative_mask;
The negative_mask is applied, here, because BASE_TYPE->FLAG_UNSIGNED
is not set. And the reason for that is because the base_type was only
partially constructed during the call to die_type. While the enum
is constructed on the fly by read_enumeration_type, its flag_unsigned
flag is only set later on, while creating the symbols corresponding to
the enum type's enumerators (see process_enumeration_scope), after
we've already finished creating our range type - and therefore too
late.
My first naive attempt at fixing this problem consisted in extracting
the part in process_enumeration_scope which processes all enumerators,
to generate the associated symbols, but more importantly set the type's
various flags when necessary. However, this does not always work well,
because we're still in the subrange_type's scope, and it might be
different from the scope where the enumeration type is defined.
So, instead, what this patch does to fix the issue is to extract
from process_enumeration_scope the part that determines whether
the enumeration type should have the flag_unsigned and/or the
flag_flag_enum flags set. It turns out that, aside from the code
implementing the loop, this part is fairly independent of the symbol
creation. With that part extracted, we can then use it at the end
of our enumeration type creation, to produce a type which should now
no longer need any adjustment.
Once the enumeration type produced is correctly marked as unsigned,
the subrange type's upper bound is then correctly read as an unsigned
value, therefore giving us an upper bound of 128 instead of -128.
gdb/ChangeLog:
* dwarf2read.c (update_enumeration_type_from_children): New
function, mostly extracted from process_structure_scope.
(read_enumeration_type): Call update_enumeration_type_from_children.
(process_enumeration_scope): Do not set THIS_TYPE's flag_unsigned
and flag_flag_enum fields.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/arr-subrange.c, gdb.dwarf2/arr-subrange.exp: New files.
2014-01-22 15:40:20 +01:00
|
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|
|
2014-02-26 Joel Brobecker <brobecker@adacore.com>
|
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|
|
* gdb.dwarf2/arr-subrange.c, gdb.dwarf2/arr-subrange.exp: New files.
|
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|
DWARF: Add array DW_AT_bit_stride and DW_AT_byte_stride support
Consider the following declarations in Ada...
type Item is range -32 .. 31;
for Item'Size use 6;
type Table is array (Natural range 0 .. 4) of Item;
pragma Pack (Table);
... which declare a packed array whose elements are 6 bits long.
The debugger currently does not notice that the array is packed,
and thus prints values of this type incorrectly. This can be seen
in the "ptype" output:
(gdb) ptype table
type = array (0 .. 4) of foo.item
Normally, the debugger should print:
(gdb) ptype table
type = array (0 .. 4) of foo.item <packed: 6-bit elements>
The debugging information for this array looks like this:
.uleb128 0xf # (DIE (0x15c) DW_TAG_array_type)
.long .LASF9 # DW_AT_name: "pck__table"
.byte 0x6 # DW_AT_bit_stride
.long 0x1a9 # DW_AT_type
.uleb128 0x10 # (DIE (0x16a) DW_TAG_subrange_type)
.long 0x3b # DW_AT_type
.byte 0 # DW_AT_lower_bound
.byte 0x4 # DW_AT_upper_bound
.byte 0 # end of children of DIE 0x15c
The interesting part is the DW_AT_bit_stride attribute, which tells
the size of the array elements is 6 bits, rather than the normal
element type's size.
This patch adds support for this attribute by first creating
gdbtypes.c::create_array_type_with_stride, which is an enhanced
version of create_array_type taking an extra parameter as the stride.
The old create_array_type can then be re-implemented very simply
by calling the new create_array_type_with_stride.
We can then use this new function from dwarf2read, to create
arrays with or without stride.
gdb/ChangeLog:
* gdbtypes.h (create_array_type_with_stride): Add declaration.
* gdbtypes.c (create_array_type_with_stride): New function,
renaming create_array_type, but with an added parameter
called "bit_stride".
(create_array_type): Re-implement using
create_array_type_with_stride.
* dwarf2read.c (read_array_type): Add support for DW_AT_byte_stride
and DW_AT_bit_stride attributes.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/arr-stride.c: New file.
* gdb.dwarf2/arr-stride.exp: New file.
The test, relying purely on generating an assembly file, only
verifies the type description of our array. But I was also
able to verify manually that the debugger print values of these
types correctly as well (which was not the case prior to this
patch).
2014-01-29 14:39:56 +01:00
|
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|
2014-02-26 Joel Brobecker <brobecker@adacore.com>
|
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|
|
* gdb.dwarf2/arr-stride.c: New file.
|
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|
|
* gdb.dwarf2/arr-stride.exp: New file.
|
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|
|
Multiple Ada task-specific breakpoints at the same address.
With the test changed as in the patch, against current mainline, we get:
(gdb) PASS: gdb.ada/tasks.exp: info tasks before inserting breakpoint
break break_me task 1
Breakpoint 2 at 0x4030b0: file /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/tasks/foo.adb, line 27.
(gdb) PASS: gdb.ada/tasks.exp: break break_me task 1
break break_me task 3
Note: breakpoint 2 also set at pc 0x4030b0.
Breakpoint 3 at 0x4030b0: file /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/tasks/foo.adb, line 27.
(gdb) PASS: gdb.ada/tasks.exp: break break_me task 3
continue
Continuing.
[Switching to Thread 0x7ffff7dc7700 (LWP 27133)]
Breakpoint 2, foo.break_me () at /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/tasks/foo.adb:27
27 null;
(gdb) FAIL: gdb.ada/tasks.exp: continue to breakpoint
info tasks
ID TID P-ID Pri State Name
1 63b010 48 Waiting on RV with 3 main_task
2 63bd80 1 48 Accept or Select Term task_list(1)
* 3 63f510 1 48 Accepting RV with 1 task_list(2)
4 642ca0 1 48 Accept or Select Term task_list(3)
(gdb) PASS: gdb.ada/tasks.exp: info tasks after hitting breakpoint
The breakpoint that caused a stop is breakpoint 3, but GDB end up
reporting (and running breakpoint commands of) "Breakpoint 2" instead.
The issue is that the bpstat_check_breakpoint_conditions logic of
"wrong thread" is missing the "wrong task" check. This is usually
harmless, because the thread hop code in infrun.c code that handles
wrong-task-hitting-breakpoint does check for task-specific breakpoints
(within breakpoint_thread_match):
/* Check if a regular breakpoint has been hit before checking
for a potential single step breakpoint. Otherwise, GDB will
not see this breakpoint hit when stepping onto breakpoints. */
if (regular_breakpoint_inserted_here_p (aspace, stop_pc))
{
if (!breakpoint_thread_match (aspace, stop_pc, ecs->ptid))
thread_hop_needed = 1;
}
IOW, usually, when one only has a task specific breakpoint at a given
address, things work correctly. Put another task-specific or
non-task-specific breakpoint there, and things break.
A patch that eliminates the special thread hop code in infrun.c is
what exposed this, as after that GDB solely relies on
bpstat_check_breakpoint_conditions to know whether the right or wrong
task hit a breakpoint. IOW, given the latent bug, Ada task-specific
breakpoints become non-task-specific, and that is caught by the
testsuite, as:
break break_me task 3
Breakpoint 2 at 0x4030b0: file /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/tasks/foo.adb, line 27.
(gdb) PASS: gdb.ada/tasks.exp: break break_me task 3
continue
Continuing.
[Switching to Thread 0x7ffff7fcb700 (LWP 17122)]
Breakpoint 2, foo.break_me () at /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/tasks/foo.adb:27
27 null;
(gdb) PASS: gdb.ada/tasks.exp: continue to breakpoint
info tasks
ID TID P-ID Pri State Name
1 63b010 48 Waiting on RV with 2 main_task
* 2 63bd80 1 48 Accepting RV with 1 task_list(1)
3 63f510 1 48 Accept or Select Term task_list(2)
4 642ca0 1 48 Accept or Select Term task_list(3)
(gdb) FAIL: gdb.ada/tasks.exp: info tasks after hitting breakpoint
It was after seeing this that I thought of how to expose the bug with
current mainline.
Tested on x86_64 Fedora 17.
gdb/
2014-02-26 Pedro Alves <palves@redhat.com>
* breakpoint.c (bpstat_check_breakpoint_conditions): Handle
task-specific breakpoints.
gdb/testsuite/
2014-02-26 Pedro Alves <palves@redhat.com>
* gdb.ada/tasks.exp: Set a task-specific breakpoint at break_me
that won't ever trigger. Make sure that GDB reports the correct
breakpoint that caused the stop.
2014-02-26 15:22:33 +01:00
|
|
|
|
2014-02-26 Pedro Alves <palves@redhat.com>
|
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|
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|
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|
|
* gdb.ada/tasks.exp: Set a task-specific breakpoint at break_me
|
|
|
|
|
|
that won't ever trigger. Make sure that GDB reports the correct
|
|
|
|
|
|
breakpoint that caused the stop.
|
|
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|
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|
|
2014-02-25 18:32:32 +01:00
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|
2014-02-25 Jan Kratochvil <jan.kratochvil@redhat.com>
|
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|
|
PR gdb/16626
|
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|
|
* gdb.base/auto-load-script: New file.
|
|
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|
|
|
* gdb.base/auto-load.c: New file.
|
|
|
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|
|
* gdb.base/auto-load.exp: New file.
|
|
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|
|
2014-02-25 20:47:09 +01:00
|
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|
|
PR gdb/16626
|
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|
|
* gdb.base/auto-load.exp: Fix out-of-srctree run.
|
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|
|
2014-02-25 18:28:38 +01:00
|
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|
|
2014-02-25 Jan Kratochvil <jan.kratochvil@redhat.com>
|
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|
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|
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|
|
Fix dw2-icycle.exp -fsanitize=address GDB crash.
|
|
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|
|
|
* gdb.dwarf2/dw2-icycle.S: Remove all DW_AT_sibling.
|
|
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|
|
2014-02-24 22:39:14 +01:00
|
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|
|
2014-02-24 Doug Evans <dje@google.com>
|
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|
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|
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|
|
* lib/gdb.exp (run_on_host): Log error output if program fails.
|
|
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|
|
2014-02-21 14:30:12 +01:00
|
|
|
|
2014-02-21 Pedro Alves <palves@redhat.com>
|
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|
|
|
|
|
|
|
|
|
* gdb.threads/step-after-sr-lock.c: Rename to ...
|
|
|
|
|
|
* gdb.threads/signal-while-stepping-over-bp-other-thread.c: ... this.
|
|
|
|
|
|
* gdb.threads/step-after-sr-lock.exp: Rename to ...
|
|
|
|
|
|
* gdb.threads/signal-while-stepping-over-bp-other-thread.exp:
|
|
|
|
|
|
... this.
|
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|
|
2014-02-20 22:49:09 +01:00
|
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|
|
2014-02-20 Sergio Durigan Junior <sergiodj@redhat.com>
|
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|
|
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|
|
|
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|
|
PR tdep/16397
|
|
|
|
|
|
* gdb.arch/amd64-stap-special-operands.exp: New file.
|
|
|
|
|
|
* gdb.arch/amd64-stap-three-arg-disp.S: Likewise.
|
|
|
|
|
|
* gdb.arch/amd64-stap-three-arg-disp.c: Likewise.
|
|
|
|
|
|
* gdb.arch/amd64-stap-triplet.S: Likewise.
|
|
|
|
|
|
* gdb.arch/amd64-stap-triplet.c: Likewise.
|
|
|
|
|
|
|
2014-02-20 18:34:45 +01:00
|
|
|
|
2014-02-20 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-icycle.S: Remove second and third parameters
|
|
|
|
|
|
in .section pseudo-op.
|
|
|
|
|
|
|
2014-02-20 18:13:53 +01:00
|
|
|
|
2014-02-20 lin zuojian <manjian2006@gmail.com>
|
|
|
|
|
|
Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
Doug Evans <xdje42@gmail.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR symtab/16581
|
|
|
|
|
|
* gdb.dwarf2/dw2-icycle.S: New file.
|
|
|
|
|
|
* gdb.dwarf2/dw2-icycle.c: New file.
|
|
|
|
|
|
* gdb.dwarf2/dw2-icycle.exp: New file.
|
|
|
|
|
|
|
2013-12-02 15:45:09 +01:00
|
|
|
|
2014-02-19 Siva Chandra Reddy <sivachandra@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.python/py-value-cc.cc: Improve test case to enable testing
|
|
|
|
|
|
operations on gdb.Value objects.
|
|
|
|
|
|
* gdb.python/py-value-cc.exp: Add new test to test operations on
|
|
|
|
|
|
gdb.Value objects.
|
|
|
|
|
|
|
2014-02-19 01:11:02 +01:00
|
|
|
|
2014-02-18 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* Makefile.in (TESTS): New variable.
|
|
|
|
|
|
(expanded_tests, expanded_tests_or_none): New variables
|
|
|
|
|
|
(check-single): Pass $(expanded_tests_or_none) to runtest.
|
|
|
|
|
|
(check-parallel): Only run tests in $(TESTS) if non-empty.
|
|
|
|
|
|
(check/no-matching-tests-found): New rule.
|
|
|
|
|
|
* README: Document TESTS makefile variable.
|
|
|
|
|
|
|
2014-02-19 01:01:34 +01:00
|
|
|
|
2014-02-18 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* Makefile.in (check-parallel): rm -rf outputs temp.
|
|
|
|
|
|
|
2014-02-16 21:49:40 +01:00
|
|
|
|
2014-02-16 Jan Kratochvil <jan.kratochvil@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
Fix "ERROR: no fileid for" in the testsuite.
|
|
|
|
|
|
* lib/gdb.exp (gdb_finish): Check gdb_spawn_id.
|
|
|
|
|
|
|
2014-02-12 20:38:48 +01:00
|
|
|
|
2014-02-12 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/Makefile.in (EXECUTABLES): Add dwp-symlink.
|
|
|
|
|
|
(MISCELLANEOUS): New variable.
|
|
|
|
|
|
(clean): rm -rf $(MISCELLANEOUS).
|
|
|
|
|
|
* gdb.dwarf2/dwp-symlink.exp: Test the case where the executable and
|
|
|
|
|
|
dwp live in the same directory as symlinks, with each symlink pointed
|
|
|
|
|
|
to a differently named file in a different directory.
|
|
|
|
|
|
|
2014-02-12 00:47:50 +01:00
|
|
|
|
2014-02-11 Doug Evans <dje@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dwp-symlink.exp: Rewrite to use remote_* commands instead
|
|
|
|
|
|
of Tcl file commands.
|
|
|
|
|
|
|
2014-02-10 17:58:03 +01:00
|
|
|
|
2014-02-10 Mark Kettenis <kettenis@gnu.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/step-after-sr-lock.exp: Avoid executing
|
|
|
|
|
|
"kill -SIGUSR1 -1".
|
|
|
|
|
|
|
2014-02-07 05:44:20 +01:00
|
|
|
|
2014-02-10 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.ada/tick_length_array_enum_idx: New testcase.
|
|
|
|
|
|
|
Add Guile as an extension language.
* NEWS: Mention Guile scripting.
* Makefile.in (SUBDIR_GUILE_OBS): New variable.
(SUBDIR_GUILE_SRCS, SUBDIR_GUILE_DEPS): New variables
(SUBDIR_GUILE_LDFLAGS, SUBDIR_GUILE_CFLAGS): New variables.
(INTERNAL_CPPFLAGS): Add GUILE_CPPFLAGS.
(CLIBS): Add GUILE_LIBS.
(install-guile): New rule.
(guile.o): New rule.
(scm-arch.o, scm-auto-load.o, scm-block.o): New rules.
(scm-breakpoint.o, scm-disasm.o, scm-exception.o): New rules.
(scm-frame.o, scm-iterator.o, scm-lazy-string.o): New rules.
(scm-math.o, scm-objfile.o, scm-ports.o): New rules.
(scm-pretty-print.o, scm-safe-call.o, scm-gsmob.o): New rules.
(scm-string.o, scm-symbol.o, scm-symtab.o): New rules.
(scm-type.o, scm-utils.o, scm-value.o): New rules.
* configure.ac: New option --with-guile.
* configure: Regenerate.
* config.in: Regenerate.
* auto-load.c: Remove #include "python/python.h". Add #include
"gdb/section-scripts.h".
(source_section_scripts): Handle Guile scripts.
(_initialize_auto_load): Add name of Guile objfile script to
scripts-directory help text.
* breakpoint.c (condition_command): Tweak comment to include Scheme.
* breakpoint.h (gdbscm_breakpoint_object): Add forward decl.
(struct breakpoint): New member scm_bp_object.
* defs.h (enum command_control_type): New value guile_control.
* cli/cli-cmds.c: Remove #include "python/python.h". Add #include
"extension.h".
(show_user): Update comment.
(_initialize_cli_cmds): Update help text for "show user". Update help
text for max-user-call-depth.
* cli/cli-script.c: Remove #include "python/python.h". Add #include
"extension.h".
(multi_line_command_p): Add guile_control.
(print_command_lines): Handle guile_control.
(execute_control_command, recurse_read_control_structure): Ditto.
(process_next_line): Recognize "guile" commands.
* disasm.c (gdb_disassemble_info): Make non-static.
* disasm.h: #include "dis-asm.h".
(struct gdbarch): Add forward decl.
(gdb_disassemble_info): Declare.
* extension.c: #include "guile/guile.h".
(extension_languages): Add guile.
(get_ext_lang_defn): Handle EXT_LANG_GDB.
* extension.h (enum extension_language): New value EXT_LANG_GUILE.
* gdbtypes.c (get_unsigned_type_max): New function.
(get_signed_type_minmax): New function.
* gdbtypes.h (get_unsigned_type_max): Declare.
(get_signed_type_minmax): Declare.
* guile/README: New file.
* guile/guile-internal.h: New file.
* guile/guile.c: New file.
* guile/guile.h: New file.
* guile/scm-arch.c: New file.
* guile/scm-auto-load.c: New file.
* guile/scm-block.c: New file.
* guile/scm-breakpoint.c: New file.
* guile/scm-disasm.c: New file.
* guile/scm-exception.c: New file.
* guile/scm-frame.c: New file.
* guile/scm-gsmob.c: New file.
* guile/scm-iterator.c: New file.
* guile/scm-lazy-string.c: New file.
* guile/scm-math.c: New file.
* guile/scm-objfile.c: New file.
* guile/scm-ports.c: New file.
* guile/scm-pretty-print.c: New file.
* guile/scm-safe-call.c: New file.
* guile/scm-string.c: New file.
* guile/scm-symbol.c: New file.
* guile/scm-symtab.c: New file.
* guile/scm-type.c: New file.
* guile/scm-utils.c: New file.
* guile/scm-value.c: New file.
* guile/lib/gdb.scm: New file.
* guile/lib/gdb/boot.scm: New file.
* guile/lib/gdb/experimental.scm: New file.
* guile/lib/gdb/init.scm: New file.
* guile/lib/gdb/iterator.scm: New file.
* guile/lib/gdb/printing.scm: New file.
* guile/lib/gdb/types.scm: New file.
* data-directory/Makefile.in (GUILE_SRCDIR): New variable.
(VPATH): Add $(GUILE_SRCDIR).
(GUILE_DIR): New variable.
(GUILE_INSTALL_DIR, GUILE_FILES): New variables.
(all): Add stamp-guile dependency.
(stamp-guile): New rule.
(clean-guile, install-guile, uninstall-guile): New rules.
(install-only): Add install-guile dependency.
(uninstall): Add uninstall-guile dependency.
(clean): Add clean-guile dependency.
doc/
* Makefile.in (GDB_DOC_FILES): Add guile.texi.
* gdb.texinfo (Auto-loading): Add set/show auto-load guile-scripts.
(Extending GDB): New menu entries Guile, Multiple Extension Languages.
(Guile docs): Include guile.texi.
(objfile-gdbdotext file): Add objfile-gdb.scm.
(dotdebug_gdb_scripts section): Mention Guile scripts.
(Multiple Extension Languages): New node.
* guile.texi: New file.
testsuite/
* configure.ac (AC_OUTPUT): Add gdb.guile.
* configure: Regenerate.
* lib/gdb-guile.exp: New file.
* lib/gdb.exp (get_target_charset): New function.
* gdb.base/help.exp: Update expected output from "apropos apropos".
* gdb.guile/Makefile.in: New file.
* gdb.guile/guile.exp: New file.
* gdb.guile/scm-arch.c: New file.
* gdb.guile/scm-arch.exp: New file.
* gdb.guile/scm-block.c: New file.
* gdb.guile/scm-block.exp: New file.
* gdb.guile/scm-breakpoint.c: New file.
* gdb.guile/scm-breakpoint.exp: New file.
* gdb.guile/scm-disasm.c: New file.
* gdb.guile/scm-disasm.exp: New file.
* gdb.guile/scm-equal.c: New file.
* gdb.guile/scm-equal.exp: New file.
* gdb.guile/scm-error.exp: New file.
* gdb.guile/scm-error.scm: New file.
* gdb.guile/scm-frame-args.c: New file.
* gdb.guile/scm-frame-args.exp: New file.
* gdb.guile/scm-frame-args.scm: New file.
* gdb.guile/scm-frame-inline.c: New file.
* gdb.guile/scm-frame-inline.exp: New file.
* gdb.guile/scm-frame.c: New file.
* gdb.guile/scm-frame.exp: New file.
* gdb.guile/scm-generics.exp: New file.
* gdb.guile/scm-gsmob.exp: New file.
* gdb.guile/scm-iterator.c: New file.
* gdb.guile/scm-iterator.exp: New file.
* gdb.guile/scm-math.c: New file.
* gdb.guile/scm-math.exp: New file.
* gdb.guile/scm-objfile-script-gdb.in: New file.
* gdb.guile/scm-objfile-script.c: New file.
* gdb.guile/scm-objfile-script.exp: New file.
* gdb.guile/scm-objfile.c: New file.
* gdb.guile/scm-objfile.exp: New file.
* gdb.guile/scm-ports.exp: New file.
* gdb.guile/scm-pretty-print.c: New file.
* gdb.guile/scm-pretty-print.exp: New file.
* gdb.guile/scm-pretty-print.scm: New file.
* gdb.guile/scm-section-script.c: New file.
* gdb.guile/scm-section-script.exp: New file.
* gdb.guile/scm-section-script.scm: New file.
* gdb.guile/scm-symbol.c: New file.
* gdb.guile/scm-symbol.exp: New file.
* gdb.guile/scm-symtab-2.c: New file.
* gdb.guile/scm-symtab.c: New file.
* gdb.guile/scm-symtab.exp: New file.
* gdb.guile/scm-type.c: New file.
* gdb.guile/scm-type.exp: New file.
* gdb.guile/scm-value-cc.cc: New file.
* gdb.guile/scm-value-cc.exp: New file.
* gdb.guile/scm-value.c: New file.
* gdb.guile/scm-value.exp: New file.
* gdb.guile/source2.scm: New file.
* gdb.guile/types-module.cc: New file.
* gdb.guile/types-module.exp: New file.
2014-02-10 04:40:01 +01:00
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2014-02-10 Doug Evans <xdje42@gmail.com>
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* configure.ac (AC_OUTPUT): Add gdb.guile.
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* configure: Regenerate.
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* lib/gdb-guile.exp: New file.
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* lib/gdb.exp (get_target_charset): New function.
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* gdb.base/help.exp: Update expected output from "apropos apropos".
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* gdb.guile/Makefile.in: New file.
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* gdb.guile/guile.exp: New file.
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* gdb.guile/scm-arch.c: New file.
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* gdb.guile/scm-arch.exp: New file.
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* gdb.guile/scm-block.c: New file.
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* gdb.guile/scm-block.exp: New file.
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* gdb.guile/scm-breakpoint.c: New file.
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* gdb.guile/scm-breakpoint.exp: New file.
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* gdb.guile/scm-disasm.c: New file.
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* gdb.guile/scm-disasm.exp: New file.
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* gdb.guile/scm-equal.c: New file.
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* gdb.guile/scm-equal.exp: New file.
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* gdb.guile/scm-error.exp: New file.
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* gdb.guile/scm-error.scm: New file.
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* gdb.guile/scm-frame-args.c: New file.
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* gdb.guile/scm-frame-args.exp: New file.
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* gdb.guile/scm-frame-args.scm: New file.
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* gdb.guile/scm-frame-inline.c: New file.
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* gdb.guile/scm-frame-inline.exp: New file.
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* gdb.guile/scm-frame.c: New file.
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* gdb.guile/scm-frame.exp: New file.
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* gdb.guile/scm-generics.exp: New file.
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* gdb.guile/scm-gsmob.exp: New file.
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* gdb.guile/scm-iterator.c: New file.
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* gdb.guile/scm-iterator.exp: New file.
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* gdb.guile/scm-math.c: New file.
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* gdb.guile/scm-math.exp: New file.
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* gdb.guile/scm-objfile-script-gdb.in: New file.
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* gdb.guile/scm-objfile-script.c: New file.
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* gdb.guile/scm-objfile-script.exp: New file.
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* gdb.guile/scm-objfile.c: New file.
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* gdb.guile/scm-objfile.exp: New file.
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* gdb.guile/scm-ports.exp: New file.
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* gdb.guile/scm-pretty-print.c: New file.
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* gdb.guile/scm-pretty-print.exp: New file.
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* gdb.guile/scm-pretty-print.scm: New file.
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* gdb.guile/scm-section-script.c: New file.
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* gdb.guile/scm-section-script.exp: New file.
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* gdb.guile/scm-section-script.scm: New file.
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* gdb.guile/scm-symbol.c: New file.
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* gdb.guile/scm-symbol.exp: New file.
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* gdb.guile/scm-symtab-2.c: New file.
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* gdb.guile/scm-symtab.c: New file.
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* gdb.guile/scm-symtab.exp: New file.
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* gdb.guile/scm-type.c: New file.
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* gdb.guile/scm-type.exp: New file.
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* gdb.guile/scm-value-cc.cc: New file.
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* gdb.guile/scm-value-cc.exp: New file.
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* gdb.guile/scm-value.c: New file.
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* gdb.guile/scm-value.exp: New file.
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* gdb.guile/source2.scm: New file.
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* gdb.guile/types-module.cc: New file.
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* gdb.guile/types-module.exp: New file.
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2014-02-08 13:54:57 +01:00
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2014-02-10 Yao Qi <yao@codesourcery.com>
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PR testsuite/16543
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* configure.ac: Append gdb.gdb/Makefile in AC_OUTPUT.
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* configure: Regenerated.
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* Makefile.in: New file.
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2014-02-08 10:43:24 +01:00
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2014-02-08 Andreas Schwab <schwab@linux-m68k.org>
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* gdb.python/py-framefilter.exp: Fix typo.
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2014-01-24 04:05:06 +01:00
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2014-02-08 Yao Qi <yao@codesourcery.com>
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* gdb.mi/mi-breakpoint-changed.exp (test_insert_delete_modify): Test
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that no =breakpoint-modified is emitted when breakpoints are
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modified through MI commands.
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Make sure we don't resume the stepped thread by accident.
Say:
<stopped at a breakpoint in thread 2>
(gdb) thread 3
(gdb) step
The above triggers the prepare_to_proceed/deferred_step_ptid process,
which switches back to thread 2, to step over its breakpoint before
getting back to thread 3 and "step" it.
If while stepping over the breakpoint in thread 2, a signal arrives,
and it is set to pass/nostop, we'll set a step-resume breakpoint at
the supposed signal-handler resume address, and call keep_going. The
problem is that we were supposedly stepping thread 3, and that
keep_going delivers a signal to thread 2, and due to scheduler-locking
off, resumes everything else, _including_ thread 3, the thread we want
stepping. This means that we lose control of thread 3 until the next
event, when we stop everything. The end result for the user, is that
GDB lost control of the "step".
Here's the current infrun debug output of the above, with the testcase
in the patch below:
infrun: clear_proceed_status_thread (Thread 0x2aaaab8f5700 (LWP 11663))
infrun: clear_proceed_status_thread (Thread 0x2aaaab6f4700 (LWP 11662))
infrun: clear_proceed_status_thread (Thread 0x2aaaab4f2b20 (LWP 11659))
infrun: proceed (addr=0xffffffffffffffff, signal=144, step=1)
infrun: prepare_to_proceed (step=1), switched to [Thread 0x2aaaab6f4700 (LWP 11662)]
infrun: resume (step=1, signal=0), trap_expected=1, current thread [Thread 0x2aaaab6f4700 (LWP 11662)] at 0x40098f
infrun: wait_for_inferior ()
infrun: target_wait (-1, status) =
infrun: 11659 [Thread 0x2aaaab6f4700 (LWP 11662)],
infrun: status->kind = stopped, signal = SIGUSR1
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x40098f
infrun: random signal 30
Program received signal SIGUSR1, User defined signal 1.
infrun: signal arrived while stepping over breakpoint
infrun: inserting step-resume breakpoint at 0x40098f
infrun: resume (step=0, signal=30), trap_expected=0, current thread [Thread 0x2aaaab6f4700 (LWP 11662)] at 0x40098f
^^^ this is a wildcard resume.
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 11659 [Thread 0x2aaaab6f4700 (LWP 11662)],
infrun: status->kind = stopped, signal = SIGTRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x40098f
infrun: BPSTAT_WHAT_STEP_RESUME
infrun: resume (step=1, signal=0), trap_expected=1, current thread [Thread 0x2aaaab6f4700 (LWP 11662)] at 0x40098f
^^^ step-resume hit, meaning the handler returned, so we go back to stepping thread 3.
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 11659 [Thread 0x2aaaab6f4700 (LWP 11662)],
infrun: status->kind = stopped, signal = SIGTRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x40088b
infrun: switching back to stepped thread
infrun: Switching context from Thread 0x2aaaab6f4700 (LWP 11662) to Thread 0x2aaaab8f5700 (LWP 11663)
infrun: resume (step=1, signal=0), trap_expected=0, current thread [Thread 0x2aaaab8f5700 (LWP 11663)] at 0x400938
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 11659 [Thread 0x2aaaab8f5700 (LWP 11663)],
infrun: status->kind = stopped, signal = SIGTRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x40093a
infrun: keep going
infrun: resume (step=1, signal=0), trap_expected=0, current thread [Thread 0x2aaaab8f5700 (LWP 11663)] at 0x40093a
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 11659 [Thread 0x2aaaab8f5700 (LWP 11663)],
infrun: status->kind = stopped, signal = SIGTRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x40091e
infrun: stepped to a different line
infrun: stop_stepping
[Switching to Thread 0x2aaaab8f5700 (LWP 11663)]
69 (*myp) ++; /* set breakpoint child_two here */
^^^ we stopped at the wrong line. We still stepped a bit because the
test is running in a loop, and when we got back to stepping thread 3,
it happened to be in the stepping range. (The loop increments a
counter, and the test makes sure it increments exactly once. Without
the fix, the counter increments a bunch, since the user-stepped thread
runs free without GDB noticing.)
The fix is to switch to the stepping thread before continuing for the
step-resume breakpoint.
gdb/
2014-02-07 Pedro Alves <palves@redhat.com>
* infrun.c (handle_signal_stop) <signal arrives while stepping
over a breakpoint>: Switch back to the stepping thread.
gdb/testsuite/
2014-02-07 Pedro Alves <pedro@codesourcery.com>
Pedro Alves <palves@redhat.com>
* gdb.threads/step-after-sr-lock.c: New file.
* gdb.threads/step-after-sr-lock.exp: New file.
2014-02-07 20:11:25 +01:00
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2014-02-07 Pedro Alves <pedro@codesourcery.com>
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Pedro Alves <palves@redhat.com>
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* gdb.threads/step-after-sr-lock.c: New file.
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* gdb.threads/step-after-sr-lock.exp: New file.
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Fix gdb.threads/stepi-random-signal.exp on software single-step targets.
Currently on software single-step Linux targets we get:
(gdb) PASS: gdb.threads/stepi-random-signal.exp: before stepi: get hexadecimal valueof "$pc"
stepi
infrun: clear_proceed_status_thread (Thread 0x7ffff7fca700 (LWP 7073))
infrun: clear_proceed_status_thread (Thread 0x7ffff7fcb740 (LWP 7069))
infrun: proceed (addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT, step=1)
infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=0, current thread [Thread 0x7ffff7fcb740 (LWP 7069)] at 0x400700
infrun: wait_for_inferior ()
infrun: target_wait (-1, status) =
infrun: 7069 [Thread 0x7ffff7fcb740 (LWP 7069)],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x400704
infrun: software single step trap for Thread 0x7ffff7fcb740 (LWP 7069)
infrun: stepi/nexti
infrun: stop_stepping
44 while (counter != 0)
(gdb) FAIL: gdb.threads/stepi-random-signal.exp: stepi (no random signal)
Vs hardware-step targets:
(gdb) PASS: gdb.threads/stepi-random-signal.exp: before stepi: get hexadecimal valueof "$pc"
stepi
infrun: clear_proceed_status_thread (Thread 0x7ffff7fca700 (LWP 9565))
infrun: clear_proceed_status_thread (Thread 0x7ffff7fcb740 (LWP 9561))
infrun: proceed (addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT, step=1)
infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=0, current thread [Thread 0x7ffff7fcb740 (LWP 9561)] at 0x400700
infrun: wait_for_inferior ()
infrun: target_wait (-1, status) =
infrun: 9561 [Thread 0x7ffff7fcb740 (LWP 9561)],
infrun: status->kind = stopped, signal = GDB_SIGNAL_CHLD
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x400700
infrun: random signal (GDB_SIGNAL_CHLD)
infrun: random signal, keep going
infrun: resume (step=1, signal=GDB_SIGNAL_CHLD), trap_expected=0, current thread [Thread 0x7ffff7fcb740 (LWP 9561)] at 0x400700
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 9561 [Thread 0x7ffff7fcb740 (LWP 9561)],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x400704
infrun: stepi/nexti
infrun: stop_stepping
44 while (counter != 0)
(gdb) PASS: gdb.threads/stepi-random-signal.exp: stepi
The test turns on infrun debug, does a stepi while a SIGCHLD is
pending, and checks whether the "random signal" paths in infrun.c are
taken.
On the software single-step variant above, those paths were not taken.
This is a test bug.
The Linux backend short-circuits reporting signals that are set to
pass/nostop/noprint. But _only_ if the thread is _not_
single-stepping. So on hardware-step targets, even though the signal
is set to pass/nostop/noprint by default, the thread is indeed told to
single-step, and so the core sees the signal. On the other hand, on
software single-step architectures, the backend never actually gets a
single-step request (steps are emulated by setting a breakpoint at the
next pc, and then the target told to continue, not step). So the
short-circuiting code triggers and the core doesn't see the signal.
The fix is to make the test be sure the target doesn't bypass
reporting the signal to the core.
Tested on x86_64 Fedora 17, both with and without a series that
implements software single-step for x86_64.
gdb/testsuite/
2014-02-07 Pedro Alves <palves@redhat.com>
* gdb.threads/stepi-random-signal.exp: Set SIGCHLD to print.
2013-10-30 16:07:07 +01:00
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2014-02-07 Pedro Alves <palves@redhat.com>
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* gdb.threads/stepi-random-signal.exp: Set SIGCHLD to print.
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2014-02-06 23:14:20 +01:00
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2014-02-06 Jan Kratochvil <jan.kratochvil@redhat.com>
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Fix i386-sse-stack-align.exp regression since GDB_PARALLEL.
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* gdb.arch/i386-sse-stack-align.exp: Use standard_output_file.
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Extension Language API
* configure.ac (libpython checking): Remove all but python.o from
CONFIG_OBS. Remove all but python.c from CONFIG_SRCS.
* configure: Regenerate.
* Makefile.in (SFILES): Add extension.c.
(HFILES_NO_SRCDIR): Add extension.h, extension-priv.h
(COMMON_OBS): Add extension.o.
* extension.h: New file.
* extension-priv.h: New file.
* extension.c: New file.
* python/python-internal.h: #include "extension.h".
(gdbpy_auto_load_enabled): Declare.
(gdbpy_apply_val_pretty_printer): Declare.
(gdbpy_apply_frame_filter): Declare.
(gdbpy_preserve_values): Declare.
(gdbpy_breakpoint_cond_says_stop): Declare.
(gdbpy_breakpoint_has_cond): Declare.
(void source_python_script_for_objfile): Delete.
* python/python.c: #include "extension-priv.h".
Delete inclusion of "observer.h".
(extension_language_python): Moved here and renamed from
script_language_python in py-auto-load.c.
Redefined to be of type extension_language_defn.
(python_extension_script_ops): New global.
(python_extension_ops): New global.
(struct python_env): New member previous_active.
(restore_python_env): Call restore_active_ext_lang.
(ensure_python_env): Call set_active_ext_lang.
(gdbpy_clear_quit_flag): Renamed from clear_quit_flag, made static.
New arg extlang.
(gdbpy_set_quit_flag): Renamed from set_quit_flag, made static.
New arg extlang.
(gdbpy_check_quit_flag): Renamed from check_quit_flag, made static.
New arg extlang.
(gdbpy_eval_from_control_command): Renamed from
eval_python_from_control_command, made static. New arg extlang.
(gdbpy_source_script) Renamed from source_python_script, made static.
New arg extlang.
(gdbpy_before_prompt_hook): Renamed from before_prompt_hook. Change
result to int. New arg extlang.
(gdbpy_source_objfile_script): Renamed from
source_python_script_for_objfile, made static. New arg extlang.
(gdbpy_start_type_printers): Renamed from start_type_printers, made
static. New args extlang, extlang_printers. Change result type to
"void".
(gdbpy_apply_type_printers): Renamed from apply_type_printers, made
static. New arg extlang. Rename arg printers to extlang_printers
and change type to ext_lang_type_printers *.
(gdbpy_free_type_printers): Renamed from free_type_printers, made
static. Replace argument arg with extlang, extlang_printers.
(!HAVE_PYTHON, eval_python_from_control_command): Delete.
(!HAVE_PYTHON, source_python_script): Delete.
(!HAVE_PYTHON, gdbpy_should_stop): Delete.
(!HAVE_PYTHON, gdbpy_breakpoint_has_py_cond): Delete.
(!HAVE_PYTHON, start_type_printers): Delete.
(!HAVE_PYTHON, apply_type_printers): Delete.
(!HAVE_PYTHON, free_type_printers): Delete.
(_initialize_python): Delete call to observer_attach_before_prompt.
(finalize_python): Set/restore active extension language.
(gdbpy_finish_initialization) Renamed from
finish_python_initialization, made static. New arg extlang.
(gdbpy_initialized): New function.
* python/python.h: #include "extension.h". Delete #include
"value.h", "mi/mi-cmds.h".
(extension_language_python): Declare.
(GDBPY_AUTO_FILE_NAME): Delete.
(enum py_bt_status): Moved to extension.h and renamed to
ext_lang_bt_status.
(enum frame_filter_flags): Moved to extension.h.
(enum py_frame_args): Moved to extension.h and renamed to
ext_lang_frame_args.
(finish_python_initialization): Delete.
(eval_python_from_control_command): Delete.
(source_python_script): Delete.
(apply_val_pretty_printer): Delete.
(apply_frame_filter): Delete.
(preserve_python_values): Delete.
(gdbpy_script_language_defn): Delete.
(gdbpy_should_stop, gdbpy_breakpoint_has_py_cond): Delete.
(start_type_printers, apply_type_printers, free_type_printers): Delete.
* auto-load.c: #include "extension.h".
(GDB_AUTO_FILE_NAME): Delete.
(auto_load_gdb_scripts_enabled): Make public. New arg extlang.
(script_language_gdb): Delete, moved to extension.c and renamed to
extension_language_gdb.
(source_gdb_script_for_objfile): Delete.
(auto_load_pspace_info): New member unsupported_script_warning_printed.
(loaded_script): Change type of language member to
struct extension_language_defn *.
(init_loaded_scripts_info): Initialize
unsupported_script_warning_printed.
(maybe_add_script): Make static. Change type of language arg to
struct extension_language_defn *.
(clear_section_scripts): Reset unsupported_script_warning_printed.
(auto_load_objfile_script_1): Rewrite to use extension language API.
(auto_load_objfile_script): Make public. Remove support-compiled-in
and auto-load-enabled checks, moved to auto_load_scripts_for_objfile.
(source_section_scripts): Rewrite to use extension language API.
(load_auto_scripts_for_objfile): Rewrite to use
auto_load_scripts_for_objfile.
(collect_matching_scripts_data): Change type of language member to
struct extension_language_defn *.
(auto_load_info_scripts): Change type of language arg to
struct extension_language_defn *.
(unsupported_script_warning_print): New function.
(script_not_found_warning_print): Make static.
(_initialize_auto_load): Rewrite construction of scripts-directory
help.
* auto-load.h (struct objfile): Add forward decl.
(struct script_language): Delete.
(struct auto_load_pspace_info): Add forward decl.
(struct extension_language_defn): Add forward decl.
(maybe_add_script): Delete.
(auto_load_objfile_script): Declare.
(script_not_found_warning_print): Delete.
(auto_load_info_scripts): Update prototype.
(auto_load_gdb_scripts_enabled): Declare.
* python/py-auto-load.c (gdbpy_auto_load_enabled): Renamed from
auto_load_python_scripts_enabled and made public.
(script_language_python): Delete, moved to python.c.
(gdbpy_script_language_defn): Delete.
(info_auto_load_python_scripts): Update to use
extension_language_python.
* breakpoint.c (condition_command): Replace call to
gdbpy_breakpoint_has_py_cond with call to get_breakpoint_cond_ext_lang.
(bpstat_check_breakpoint_conditions): Replace call to gdbpy_should_stop
with call to breakpoint_ext_lang_cond_says_stop.
* python/py-breakpoint.c (gdbpy_breakpoint_cond_says_stop): Renamed
from gdbpy_should_stop. Change result type to enum scr_bp_stop.
New arg slang. Return SCR_BP_STOP_UNSET if py_bp_object is NULL.
(gdbpy_breakpoint_has_cond): Renamed from gdbpy_breakpoint_has_py_cond.
New arg slang.
(local_setattro): Print name of extension language with existing
stop condition.
* valprint.c (val_print, value_print): Update to call
apply_ext_lang_val_pretty_printer.
* cp-valprint.c (cp_print_value): Update call to
apply_ext_lang_val_pretty_printer.
* python/py-prettyprint.c: Remove #ifdef HAVE_PYTHON.
(gdbpy_apply_val_pretty_printer): Renamed from
apply_val_pretty_printer. New arg extlang.
(!HAVE_PYTHON, apply_val_pretty_printer): Delete.
* cli/cli-cmds.c (source_script_from_stream): Rewrite to use
extension language API.
* cli/cli-script.c (execute_control_command): Update to call
eval_ext_lang_from_control_command.
* mi/mi-cmd-stack.c (mi_cmd_stack_list_frames): Update to use
enum ext_lang_bt_status values. Update call to
apply_ext_lang_frame_filter.
(mi_cmd_stack_list_locals): Ditto.
(mi_cmd_stack_list_args): Ditto.
(mi_cmd_stack_list_variables): Ditto.
* mi/mi-main.c: Delete #include "python/python-internal.h".
Add #include "extension.h".
(mi_cmd_list_features): Replace reference to python internal variable
gdb_python_initialized with call to ext_lang_initialized_p.
* stack.c (backtrace_command_1): Update to use enum ext_lang_bt_status.
Update to use enum ext_lang_frame_args. Update to call
apply_ext_lang_frame_filter.
* python/py-framefilter.c (extract_sym): Update to use enum
ext_lang_bt_status.
(extract_value, py_print_type, py_print_value): Ditto.
(py_print_single_arg, enumerate_args, enumerate_locals): Ditto.
(py_mi_print_variables, py_print_locals, py_print_args): Ditto.
(py_print_frame): Ditto.
(gdbpy_apply_frame_filter): Renamed from apply_frame_filter.
New arg extlang. Update to use enum ext_lang_bt_status.
* top.c (gdb_init): Delete #ifdef HAVE_PYTHON call to
finish_python_initialization. Replace with call to
finish_ext_lang_initialization.
* typeprint.c (do_free_global_table): Update to call
free_ext_lang_type_printers.
(create_global_typedef_table): Update to call
start_ext_lang_type_printers.
(find_global_typedef): Update to call apply_ext_lang_type_printers.
* typeprint.h (struct ext_lang_type_printers): Add forward decl.
(type_print_options): Change type of global_printers from "void *"
to "struct ext_lang_type_printers *".
* value.c (preserve_values): Update to call preserve_ext_lang_values.
* python/py-value.c: Remove #ifdef HAVE_PYTHON.
(gdbpy_preserve_values): Renamed from preserve_python_values.
New arg extlang.
(!HAVE_PYTHON, preserve_python_values): Delete.
* utils.c (quit_flag): Delete, moved to extension.c.
(clear_quit_flag, set_quit_flag, check_quit_flag): Delete, moved to
extension.c.
* eval.c: Delete #include "python/python.h".
* main.c: Delete #include "python/python.h".
* defs.h: Update comment.
testsuite/
* gdb.python/py-breakpoint.exp (test_bkpt_eval_funcs): Update expected
output.
* gdb.gdb/python-interrupts.exp: New file.
2014-02-06 04:27:58 +01:00
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2014-02-06 Doug Evans <xdje42@gmail.com>
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* gdb.python/py-breakpoint.exp (test_bkpt_eval_funcs): Update expected
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output.
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* gdb.gdb/python-interrupts.exp: New file.
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2014-01-30 03:09:11 +01:00
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2014-02-05 Yao Qi <yao@codesourcery.com>
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* gdb.trace/report.exp (use_collected_data): Test the output
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of "info threads" and "info inferiors".
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2014-01-30 01:37:05 +01:00
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2014-02-05 Yao Qi <yao@codesourcery.com>
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Revert this patch:
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2013-05-24 Yao Qi <yao@codesourcery.com>
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* gdb.trace/tfile.exp: Test inferior and thread.
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PowerPC64 ELFv2 ABI: skip global entry point code
This patch handles another aspect of the ELFv2 ABI, which unfortunately
requires common code changes.
In ELFv2, functions may provide both a global and a local entry point.
The global entry point (where the function symbol points to) is intended
to be used for function-pointer or cross-module (PLT) calls, and requires
r12 to be set up to the entry point address itself. The local entry
point (which is found at a fixed offset after the global entry point,
as defined by bits in the symbol table entries' st_other field), instead
expects r2 to be set up to the current TOC.
Now, when setting a breakpoint on a function by name, you really want
that breakpoint to trigger either way, no matter whether the function
is called via its local or global entry point. Since the global entry
point will always fall through into the local entry point, the way to
achieve that is to simply set the breakpoint at the local entry point.
One way to do that would be to have prologue parsing skip the code
sequence that makes up the global entry point. Unfortunately, this
does not work reliably, since -for optimized code- GDB these days
will not actuall invoke the prologue parsing code but instead just
set the breakpoint at the symbol address and rely on DWARF being
correct at any point throughout the function ...
Unfortunately, I don't really see any way to express the notion of
local entry points with the current set of gdbarch callbacks.
Thus this patch adds a new callback, skip_entrypoint, that is
somewhat analogous to skip_prologue, but is called every time
GDB needs to determine a function start address, even in those
cases where GDB decides to not call skip_prologue.
As a side effect, the skip_entrypoint implementation on ppc64
does not need to perform any instruction parsing; it can simply
rely on the local entry point flags in the symbol table entry.
With this implemented, two test cases would still fail to set
the breakpoint correctly, but that's because they use the construct:
gdb_test "break *hello"
Now, using "*hello" explicitly instructs GDB to set the breakpoint
at the numerical value of "hello" treated as function pointer, so
it will by definition only hit the global entry point.
I think this behaviour is unavoidable, but acceptable -- most people
do not use this construct, and if they do, they get what they
asked for ...
In one of those two test cases, use of this construct is really
not appropriate. I think this was added way back when as a means
to work around prologue skipping problems on some platforms. These
days that shouldn't really be necessary any more ...
For the other (step-bt), we really want to make sure backtracing
works on the very first instruction of the routine. To enable that
test also on powerpc64le-linux, we can modify the code to call the
test function via function pointer (which makes it use the global
entry point in the ELFv2 ABI).
gdb/ChangeLog:
* gdbarch.sh (skip_entrypoint): New callback.
* gdbarch.c, gdbarch.h: Regenerate.
* symtab.c (skip_prologue_sal): Call gdbarch_skip_entrypoint.
* infrun.c (fill_in_stop_func): Likewise.
* ppc-linux-tdep.c: Include "elf/ppc64.h".
(ppc_elfv2_elf_make_msymbol_special): New function.
(ppc_elfv2_skip_entrypoint): Likewise.
(ppc_linux_init_abi): Install them for ELFv2.
gdb/testsuite/ChangeLog:
* gdb.base/sigbpt.exp: Do not use "*" when setting breakpoint
on a function.
* gdb.base/step-bt.c: Call hello via function pointer to make
sure its first instruction is executed on powerpc64le-linux.
2014-02-04 18:44:14 +01:00
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2014-02-04 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.base/sigbpt.exp: Do not use "*" when setting breakpoint
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on a function.
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* gdb.base/step-bt.c: Call hello via function pointer to make
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sure its first instruction is executed on powerpc64le-linux.
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2014-02-04 18:34:19 +01:00
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2014-02-04 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.arch/powerpc-d128-regs.exp: Enable on powerpc64*-*.
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2014-02-04 18:31:38 +01:00
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2014-02-04 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.arch/vsx-regs.exp: Check target endianness. Provide variants
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of the test patterns for use on little-endian systems.
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2014-02-04 18:28:24 +01:00
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2014-02-04 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.arch/altivec-regs.exp: Use gdb_test_multiple for endian test.
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(decimal_vector): Fix for little-endian.
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2014-01-29 16:15:05 +01:00
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2014-01-29 Jose E. Marchesi <jose.marchesi@oracle.com>
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* gdb.arch/sparc-sysstep.exp: New file.
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* gdb.arch/sparc-sysstep.c: Likewise.
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* gdb.arch/Makefile.in (EXECUTABLES): Add sparc-sysstep.
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2014-01-28 18:31:23 +01:00
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2014-01-28 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
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* gdb.base/info-shared.exp: Expect leading `.' on ppc64's symbols.
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2014-01-15 17:00:05 +01:00
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2014-01-23 Tom Tromey <tromey@redhat.com>
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* gdb.ada/array_char_idx: New testcase.
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2014-01-22 16:44:41 +01:00
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2014-01-23 Tom Tromey <tromey@redhat.com>
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PR python/16487:
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* gdb.python/py-framefilter.exp: Add test using "Error" filter.
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* gdb.python/py-framefilter.py (ErrorInName, ErrorFilter): New
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classes.
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2014-01-22 16:10:01 +01:00
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2014-01-23 Tom Tromey <tromey@redhat.com>
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PR python/16491:
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* gdb.python/py-framefilter.py (Reverse_Function.function): Read a
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string from an inferior frame.
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* gdb.python/py-framefilter-mi.exp: Update.
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2014-01-22 23:17:39 +01:00
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2014-01-22 Doug Evans <dje@google.com>
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* gdb.server/server-mon.exp: Add tests for "set debug-format".
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2014-01-22 18:54:43 +01:00
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2014-01-22 Andreas Arnez <arnez@vnet.linux.ibm.com>
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* gdb.base/catch-syscall.exp: Activate test on s390*-linux.
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2014-01-22 16:37:41 +01:00
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2014-01-22 Andreas Arnez <arnez@vnet.linux.ibm.com>
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* gdb.trace/entry-values.exp: Remove excess space character from
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regex patterns. Handle s390 call instruction.
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2014-01-22 16:33:00 +01:00
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2014-01-22 Andreas Arnez <arnez@vnet.linux.ibm.com>
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* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Insert alignment and
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define "*_start" label. Make "name" static.
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* gdb.dwarf2/dw2-dir-file-name.exp: Replace references to
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${name} by references to ${name}_start.
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2014-01-22 16:31:10 +01:00
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2014-01-22 Andreas Arnez <arnez@vnet.linux.ibm.com>
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* gdb.base/info-macros.exp: Remove "debug" from the compile
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options.
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2014-01-18 18:22:00 +01:00
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2014-01-17 Iain Buclaw <ibuclaw@gdcproject.org>
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* gdb.dlang/demangle.exp: New file.
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2014-01-18 18:18:23 +01:00
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2014-01-17 Iain Buclaw <ibuclaw@gdcproject.org>
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* gdb.dlang/primitive-types.exp: New file.
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2014-01-18 17:04:36 +01:00
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2014-01-17 Iain Buclaw <ibuclaw@gdcproject.org>
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* configure.ac: Create gdb.dlang/Makefile.
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* configure: Regenerate.
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* Makefile.in (ALL_SUBDIRS): Add gdb.dlang.
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* gdb.dlang/Makefile.in: New file.
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* lib/d-support.exp: New file.
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* lib/gdb.exp (skip_d_tests): New proc.
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2013-05-06 16:04:46 +02:00
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2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
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|
|
|
|
|
|
|
* gdb.btrace/delta.exp: Check reverse stepi.
|
|
|
|
|
|
* gdb.btrace/tailcall.exp: Update. Add stepping tests.
|
|
|
|
|
|
* gdb.btrace/finish.exp: New.
|
|
|
|
|
|
* gdb.btrace/next.exp: New.
|
|
|
|
|
|
* gdb.btrace/nexti.exp: New.
|
|
|
|
|
|
* gdb.btrace/record_goto.c: Add comments.
|
|
|
|
|
|
* gdb.btrace/step.exp: New.
|
|
|
|
|
|
* gdb.btrace/stepi.exp: New.
|
|
|
|
|
|
* gdb.btrace/multi-thread-step.c: New.
|
|
|
|
|
|
* gdb.btrace/multi-thread-step.exp: New.
|
|
|
|
|
|
* gdb.btrace/rn-dl-bind.c: New.
|
|
|
|
|
|
* gdb.btrace/rn-dl-bind.exp: New.
|
|
|
|
|
|
* gdb.btrace/data.c: New.
|
|
|
|
|
|
* gdb.btrace/data.exp: New.
|
|
|
|
|
|
* gdb.btrace/Makefile.in (EXECUTABLES): Add new.
|
|
|
|
|
|
|
2013-09-10 12:27:14 +02:00
|
|
|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/Makefile.in (EXECUTABLES): Add delta.
|
|
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|
|
|
* gdb.btrace/exception.exp: Update.
|
|
|
|
|
|
* gdb.btrace/instruction_history.exp: Update.
|
|
|
|
|
|
* gdb.btrace/record_goto.exp: Update.
|
|
|
|
|
|
* gdb.btrace/tailcall.exp: Update.
|
|
|
|
|
|
* gdb.btrace/unknown_functions.exp: Update.
|
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|
* gdb.btrace/delta.exp: New.
|
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|
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|
|
2013-03-27 09:49:47 +01:00
|
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|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
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|
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|
|
* gdb.btrace/record_goto.exp: Add backtrace test.
|
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|
* gdb.btrace/tailcall.exp: Add backtrace test.
|
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|
|
2013-03-25 16:01:33 +01:00
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2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
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|
|
|
|
|
|
|
* gdb.btrace/Makefile.in (EXECUTABLES): Add record_goto.
|
|
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|
|
|
* gdb.btrace/record_goto.c: New.
|
|
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|
|
|
* gdb.btrace/record_goto.exp: New.
|
|
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|
|
|
* gdb.btrace/x86-record_goto.S: New.
|
|
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|
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|
|
2013-04-17 09:39:43 +02:00
|
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|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
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|
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* gdb.btrace/function_call_history.exp: Update tests.
|
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|
* gdb.btrace/instruction_history.exp: Update tests.
|
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|
2013-04-18 10:58:05 +02:00
|
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2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
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|
|
* gdb.btrace/function_call_history.exp: Fix expected field
|
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|
|
order for "record function-call-history".
|
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|
|
Add new tests for "record function-call-history /c".
|
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* gdb.btrace/exception.cc: New.
|
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* gdb.btrace/exception.exp: New.
|
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* gdb.btrace/tailcall.exp: New.
|
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* gdb.btrace/x86-tailcall.S: New.
|
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|
|
* gdb.btrace/x86-tailcall.c: New.
|
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* gdb.btrace/unknown_functions.c: New.
|
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* gdb.btrace/unknown_functions.exp: New.
|
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* gdb.btrace/Makefile.in (EXECUTABLES): Add new.
|
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2013-05-13 14:57:42 +02:00
|
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2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
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|
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* gdb.btrace/instruction_history.exp: Update.
|
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|
* gdb.btrace/function_call_history.exp: Update.
|
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|
btrace: change branch trace data structure
The branch trace is represented as 3 vectors:
- a block vector
- a instruction vector
- a function vector
Each vector (except for the first) is computed from the one above.
Change this into a graph where a node represents a sequence of instructions
belonging to the same function and where we have three types of edges to connect
the function segments:
- control flow
- same function (instance)
- call stack
This allows us to navigate in the branch trace. We will need this for "record
goto" and reverse execution.
This patch introduces the data structure and computes the control flow edges.
It also introduces iterator structs to simplify iterating over the branch trace
in control-flow order.
It also fixes PR gdb/15240 since now recursive calls are handled correctly.
Fix the test that got the number of expected fib instances and also the
function numbers wrong.
The current instruction had been part of the branch trace. This will look odd
once we start support for reverse execution. Remove it. We still keep it in
the trace itself to allow extending the branch trace more easily in the future.
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* btrace.h (struct btrace_func_link): New.
(enum btrace_function_flag): New.
(struct btrace_inst): Rename to ...
(struct btrace_insn): ...this. Update all users.
(struct btrace_func) <ibegin, iend>: Remove.
(struct btrace_func_link): New.
(struct btrace_func): Rename to ...
(struct btrace_function): ...this. Update all users.
(struct btrace_function) <segment, flow, up, insn, insn_offset)
(number, level, flags>: New.
(struct btrace_insn_iterator): Rename to ...
(struct btrace_insn_history): ...this.
Update all users.
(struct btrace_insn_iterator, btrace_call_iterator): New.
(struct btrace_target_info) <btrace, itrace, ftrace>: Remove.
(struct btrace_target_info) <begin, end, level>
<insn_history, call_history>: New.
(btrace_insn_get, btrace_insn_number, btrace_insn_begin)
(btrace_insn_end, btrace_insn_prev, btrace_insn_next)
(btrace_insn_cmp, btrace_find_insn_by_number, btrace_call_get)
(btrace_call_number, btrace_call_begin, btrace_call_end)
(btrace_call_prev, btrace_call_next, btrace_call_cmp)
(btrace_find_function_by_number, btrace_set_insn_history)
(btrace_set_call_history): New.
* btrace.c (btrace_init_insn_iterator)
(btrace_init_func_iterator, compute_itrace): Remove.
(ftrace_print_function_name, ftrace_print_filename)
(ftrace_skip_file): Change
parameter to const.
(ftrace_init_func): Remove.
(ftrace_debug): Use new btrace_function fields.
(ftrace_function_switched): Also consider gaining and
losing symbol information).
(ftrace_print_insn_addr, ftrace_new_call, ftrace_new_return)
(ftrace_new_switch, ftrace_find_caller, ftrace_new_function)
(ftrace_update_caller, ftrace_fixup_caller, ftrace_new_tailcall):
New.
(ftrace_new_function): Move. Remove debug print.
(ftrace_update_lines, ftrace_update_insns): New.
(ftrace_update_function): Check for call, ret, and jump.
(compute_ftrace): Renamed to ...
(btrace_compute_ftrace): ...this. Rewritten to compute call
stack.
(btrace_fetch, btrace_clear): Updated.
(btrace_insn_get, btrace_insn_number, btrace_insn_begin)
(btrace_insn_end, btrace_insn_prev, btrace_insn_next)
(btrace_insn_cmp, btrace_find_insn_by_number, btrace_call_get)
(btrace_call_number, btrace_call_begin, btrace_call_end)
(btrace_call_prev, btrace_call_next, btrace_call_cmp)
(btrace_find_function_by_number, btrace_set_insn_history)
(btrace_set_call_history): New.
* record-btrace.c (require_btrace): Use new btrace thread
info fields.
(record_btrace_info, btrace_insn_history)
(record_btrace_insn_history, record_btrace_insn_history_range):
Use new btrace thread info fields and new iterator.
(btrace_func_history_src_line): Rename to ...
(btrace_call_history_src_line): ...this. Use new btrace
thread info fields.
(btrace_func_history): Rename to ...
(btrace_call_history): ...this. Use new btrace thread info
fields and new iterator.
(record_btrace_call_history, record_btrace_call_history_range):
Use new btrace thread info fields and new iterator.
testsuite/
* gdb.btrace/function_call_history.exp: Fix expected function
trace.
* gdb.btrace/instruction_history.exp: Initialize traced.
Remove traced_functions.
2013-03-22 14:32:47 +01:00
|
|
|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/function_call_history.exp: Fix expected function
|
|
|
|
|
|
trace.
|
|
|
|
|
|
* gdb.btrace/instruction_history.exp: Initialize traced.
|
|
|
|
|
|
Remove traced_functions.
|
|
|
|
|
|
|
2013-12-18 14:47:17 +01:00
|
|
|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/function_call_history.exp: Update
|
|
|
|
|
|
* gdb.btrace/instruction_history.exp: Update.
|
|
|
|
|
|
|
2014-01-16 09:47:51 +01:00
|
|
|
|
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.btrace/enable.exp: Update expected text.
|
|
|
|
|
|
|
Fix testsuite/gdb.dwarf2/dw2-dos-drive.exp on ARM.
This test currently fails on ARM:
(gdb) PASS: gdb.dwarf2/dw2-dos-drive.exp: set breakpoint pending off
break 'z:file.c':func
Cannot access memory at address 0x0
The error is GDB trying to read the prologue at the breakpoint's
address, and failing:
38 throw_error() exceptions.c:444 0x0016728c
37 memory_error() corefile.c:204 0x001d1fcc
36 read_memory() corefile.c:223 0x001d201a
35 read_memory_unsigned_integer() corefile.c:312 0x001d2166
34 arm_skip_prologue() arm-tdep.c:1452 0x00054270
static CORE_ADDR
arm_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
...
for (skip_pc = pc; skip_pc < limit_pc; skip_pc += 4)
{
inst = read_memory_unsigned_integer (skip_pc, 4, byte_order_for_code);
The test doesn't execute the compiled object's code, so GDB will try
to read memory from the binary's sections. Instructions on ARM are
4-byte wide, and thus ARM's prologue scanner reads in 4-byte chunks.
As the section 'func' is put at is only 1 byte long, and no other
section is allocated contiguously:
...
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 00000001 00000000 00000000 00000034 2**0
CONTENTS, ALLOC, LOAD, READONLY, CODE
...
... the exec target fails the read the 4 bytes.
Fix this by increasing the function's size.
gdb/testsuite/ChangeLog:
2014-01-16 Omair Javaid <Omair.Javaid@linaro.org>
* gdb.dwarf2/dw2-dos-drive.S: Increase text section size to 4
bytes.
2014-01-16 12:00:00 +01:00
|
|
|
|
2014-01-16 Omair Javaid <Omair.Javaid@linaro.org>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-dos-drive.S: Increase text section size to 4
|
|
|
|
|
|
bytes.
|
|
|
|
|
|
|
2014-01-15 23:17:53 +01:00
|
|
|
|
2014-01-15 Maciej W. Rozycki <macro@codesourcery.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/float.exp: Handle "aarch64*-*-*" targets.
|
|
|
|
|
|
|
2014-01-09 11:59:55 +01:00
|
|
|
|
2014-01-15 Omair Javaid <omair.javaid@linaro.org>
|
|
|
|
|
|
|
|
|
|
|
|
* lib/gdb.exp (supports_process_record): Return true for
|
|
|
|
|
|
arm*-linux*. (supports_reverse): Likewise.
|
|
|
|
|
|
|
2013-12-27 21:20:59 +01:00
|
|
|
|
2014-01-13 Siva Chandra Reddy <sivachandra@google.com>
|
|
|
|
|
|
|
|
|
|
|
|
PR python/15464
|
|
|
|
|
|
PR python/16113
|
|
|
|
|
|
* gdb.python/py-type.c: Enhance test case.
|
|
|
|
|
|
* gdb.python/py-value-cc.cc: Likewise
|
|
|
|
|
|
* gdb.python/py-type.exp: Add new tests.
|
|
|
|
|
|
* gdb.python/py-value-cc.exp: Likewise
|
|
|
|
|
|
|
2014-01-10 16:37:36 +01:00
|
|
|
|
2014-01-10 Andreas Arnez <arnez@linux.vnet.ibm.com>
|
|
|
|
|
|
Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.dwarf2/dw2-dir-file-name.c (FUNC): Remove "*_start" symbol.
|
|
|
|
|
|
Make "name" extern.
|
|
|
|
|
|
* gdb.dwarf2/dw2-dir-file-name.exp (out_cu, out_line): Replace
|
|
|
|
|
|
references to ${name}_start by references to ${name}.
|
|
|
|
|
|
|
2014-01-10 04:54:23 +01:00
|
|
|
|
2014-01-10 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.ada/pp-rec-component.exp: Remove path from "source" test.
|
|
|
|
|
|
|
2014-01-10 04:50:29 +01:00
|
|
|
|
2014-01-10 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.python/py-pp-integral.exp: Remove path from "source" test.
|
|
|
|
|
|
|
2014-01-09 20:57:13 +01:00
|
|
|
|
2014-01-09 Maciej W. Rozycki <macro@codesourcery.com>
|
|
|
|
|
|
Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.mi/mi-info-os.exp: Connect to the target with
|
|
|
|
|
|
mi_gdb_target_load.
|
|
|
|
|
|
|
[remote/gdbserver] Don't lose signals when reconnecting.
Currently, when GDB connects in all-stop mode, GDBserver always
responds to the status packet with a GDB_SIGNAL_TRAP, even if the
program is actually stopped for some other signal.
(gdb) tar rem ...
...
(gdb) c
Program received signal SIGUSR1, User defined signal 1.
(gdb) disconnect
(gdb) tar rem ...
(gdb) c
(Or a GDB crash instead of an explicit disconnect.)
This results in the program losing that signal on that last continue,
because gdb will tell the target to resume with no signal (to suppress
the GDB_SIGNAL_TRAP, due to 'handle SISGTRAP nopass'), and that will
actually suppress the real signal the program had stopped for
(SIGUSR1). To fix that, I think we should make GDBserver report the
real signal the thread had stopped for in response to the status
packet:
@item ?
@cindex @samp{?} packet
Indicate the reason the target halted. The reply is the same as for
step and continue.
But, that raises the question -- which thread are we reporting the
status for? Due to how the RSP in all-stop works, we can only report
one status. The status packet's response is a stop reply packet, so
it includes the thread identifier, so it's not a problem packet-wise.
However, GDBserver is currently always reporting the status for first
thread in the thread list, even though that may well not be the thread
that got the signal that caused the program to stop. So the next
logical step would be to report the status for the
last_ptid/last_status thread (the last event reported to gdb), if it's
still around; and if not, fallback to some other thread.
There's an issue on the GDB side with that, though...
GDB currently always adds the thread reported in response to the
status query as the first thread in its list. That means that if we
start with e.g.,
(gdb) info threads
3 Thread 1003 ...
* 2 Thread 1002 ...
1 Thread 1001 ...
And reconnect:
(gdb) disconnect
(gdb) tar rem ...
We end up with:
(gdb) info threads
3 Thread 1003 ...
2 Thread 1001 ...
* 1 Thread 1002 ...
Not a real big issue, but it's reasonably fixable, by having GDB
fetch/sync the thread list before fetching the status/'?', and then
using the status to select the right thread as current on the GDB
side. Holes in the thread numbers are squashed before/after
reconnection (e.g., 2,3,5 becomes 1,2,3), but the order is preserved,
which I think is both good, and good enough.
However (yes, there's more...), the previous GDB that was connected
might have had gdbserver running in non-stop mode, or could have left
gdbserver doing disconnected tracing (which also forces non-stop), and
if the new gdb/connection is in all-stop mode, we can end up with more
than one thread with a signal to report back to gdb. As we can only
report one thread/status (in the all-stop RSP variant; the non-stop
variant doesn't have this issue), we get to do what we do at every
other place we have this situation -- leave events we can't report
right now as pending, so that the next resume picks them up.
Note all this ammounts to a QoI change, within the existing framework.
There's really no RSP change here.
The only user visible change (other than that the signal is program is
stopped at isn't lost / is passed to the program), is in "info
program", that now can show the signal the program stopped for. Of
course, the next resume will respect the pass/nopass setting for the
signal in question. It'd be reasonable to have the initial connection
tell the user the program was stopped with a signal, similar to when
we load a core to debug, but I'm leaving that out for a future change.
I think we'll need to either change how handle_inferior_event & co
handle stop_soon, or maybe bypass them completely (like
fork-child.c:startup_inferior) for that.
Tested on x86_64 Fedora 17.
gdb/gdbserver/
2014-01-08 Pedro Alves <palves@redhat.com>
* gdbthread.h (struct thread_info) <status_pending_p>: New field.
* server.c (visit_actioned_threads, handle_pending_status): New
function.
(handle_v_cont): Factor out parts to ...
(resume): ... this new function. If in all-stop, and a thread
being resumed has a pending status, report it without actually
resuming.
(myresume): Adjust to use the new 'resume' function.
(clear_pending_status_callback, set_pending_status_callback)
(find_status_pending_thread_callback): New functions.
(handle_status): Handle the case of multiple threads having
interesting statuses to report. Report threads' real last signal
instead of always reporting GDB_SIGNAL_TRAP. Look for a thread
with an interesting thread to report the status for, instead of
always reporting the status of the first thread.
gdb/
2014-01-08 Pedro Alves <palves@redhat.com>
* remote.c (remote_add_thread): Add threads silently if starting
up.
(remote_notice_new_inferior): If in all-stop, and starting up,
don't call notice_new_inferior.
(get_current_thread): New function, factored out from ...
(add_current_inferior_and_thread): ... this. Adjust.
(remote_start_remote) <all-stop>: Fetch the thread list. If we
found any thread, then select the remote's current thread as GDB's
current thread too.
gdb/testsuite/
2014-01-08 Pedro Alves <palves@redhat.com>
* gdb.threads/reconnect-signal.c: New file.
* gdb.threads/reconnect-signal.exp: New file.
2014-01-08 19:55:51 +01:00
|
|
|
|
2014-01-08 Pedro Alves <palves@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.threads/reconnect-signal.c: New file.
|
|
|
|
|
|
* gdb.threads/reconnect-signal.exp: New file.
|
|
|
|
|
|
|
2014-01-07 20:03:06 +01:00
|
|
|
|
2014-01-07 Jan Kratochvil <jan.kratochvil@redhat.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.base/source-dir.exp: New file.
|
|
|
|
|
|
|
2014-01-08 10:16:32 +01:00
|
|
|
|
2014-01-07 Joel Brobecker <brobecker@adacore.com>
|
|
|
|
|
|
|
|
|
|
|
|
* gdb.ada/mi_interface: New testcase.
|
|
|
|
|
|
|
Ada: Fix missing call to pretty-printer for fields of records.
Consider the following types:
type Time_T is record
Secs : Integer;
end record;
Before : Time_T := (Secs => 1384395743);
In this example, we assume that type Time_T is the number of seconds
since Epoch, and so added a Python pretty-printer, to print this
type in a more human-friendly way. For instance:
(gdb) print before
$1 = Thu Nov 14 02:22:23 2013 (1384395743)
However, we've noticed that things stop working when this type is
embedded inside another record, and we try to print that record.
For instance, with the following declarations:
type Composite is record
Id : Integer;
T : Time_T;
end record;
Afternoon : Composite := (Id => 1, T => (Secs => 1384395865));
(gdb) print afternoon
$2 = (id => 1, t => (secs => 1384395865))
We expected instead:
(gdb) print afternoon
$2 = (id => 1, t => Thu Nov 14 02:24:25 2013 (1384395865))
This patch fixes the problem by making sure that we try to print
each field via a call to val_print, rather than calling ada_val_print
directly. We need to go through val_print, as the val_print
handles all language-independent features such as calling the
pretty-printer, knowing that ada_val_print will get called eventually
if actual Ada-specific printing is required (which should be the
most common scenario).
And because val_print takes the language as parameter, we enhanced
the print_field_values and print_variant_part to also take a language.
As a bonus, this allows us to remove a couple of references to
current_language.
gdb/ChangeLog:
* ada-valprint.c (print_field_values): Add "language" parameter.
Update calls to print_field_values and print_variant_part.
Pass new parameter "language" in call to val_print instead
of "current_language". Replace call to ada_val_print by call
to val_print.
(print_variant_part): Add "language" parameter.
(ada_val_print_struct_union): Update call to print_field_values.
gdb/testsuite/ChangeLog:
* gdb.ada/pp-rec-component.exp, gdb.ada/pp-rec-component.py,
gdb.ada/pp-rec-component/foo.adb, gdb.ada/pp-rec-component/pck.adb,
gdb.ada/pp-rec-component/pck.ads: New files.
2013-12-19 18:26:55 +01:00
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2014-01-07 Joel Brobecker <brobecker@adacore.com>
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* gdb.ada/pp-rec-component.exp, gdb.ada/pp-rec-component.py,
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gdb.ada/pp-rec-component/foo.adb, gdb.ada/pp-rec-component/pck.adb,
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gdb.ada/pp-rec-component/pck.ads: New files.
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2013-12-23 04:18:51 +01:00
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2014-01-07 Joel Brobecker <brobecker@adacore.com>
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* gdb.python/py-pp-integral.c: New file.
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* gdb.python/py-pp-integral.py: New file.
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* gdb.python/py-pp-integral.exp: New file.
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2014-05-13 00:16:13 +02:00
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For older changes see ChangeLog-1993-2013.
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1999-04-16 03:35:26 +02:00
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2004-08-14 15:23:24 +02:00
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;; Local Variables:
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;; mode: change-log
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;; left-margin: 8
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;; fill-column: 74
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;; version-control: never
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;; End:
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2004-08-10 21:13:35 +02:00
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2014-05-13 00:13:49 +02:00
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Copyright 2014 Free Software Foundation, Inc.
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2004-08-10 21:13:35 +02:00
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Copying and distribution of this file, with or without modification,
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are permitted provided the copyright notice and this notice are preserved.
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