Chao-ying Fu [Fri, 18 Oct 2013 21:14:25 +0000 (21:14 +0000)]
2013-10-18 Chao-ying Fu <Chao-ying.Fu@imgtec.com>
* config/tc-mips.c (fpr_read_mask): Test MSA registers.
(fpr_write_mask): Test MSA registers.
(can_swap_branch_p): Check fpr write followed by fpr read.
* breakpoint.c (update_watchpoint): If hardware watchpoints are
forced off, downgrade them to software watchpoints if possible,
and error out if not possible.
(watch_command_1): Move watchpoint type selection closer to
watchpoint creation, and extend the comments.
gdb/testsuite/ChangeLog
* gdb.base/watchpoints.exp: Add test for setting software
watchpoints of different types before starting the inferior.
Notice how the third "si" didn't actually make progress.
Turning on infrun and lin-lwp debug, we see:
(gdb)
infrun: clear_proceed_status_thread (process 5252)
infrun: proceed (addr=0xffffffffffffffff, signal=144, step=1)
infrun: resume (step=1, signal=0), trap_expected=0, current thread [process 5252] at 0x323d4ba7c4
LLR: Preparing to step process 5252, 0, inferior_ptid process 5252
RC: Not resuming sibling process 5252 (not stopped)
LLR: PTRACE_SINGLESTEP process 5252, 0 (resume event thread)
sigchld
infrun: wait_for_inferior ()
linux_nat_wait: [process -1], []
LLW: enter
LNW: waitpid(-1, ...) returned 5252, No child processes
LLW: waitpid 5252 received Child exited (stopped)
LLW: Candidate event Child exited (stopped) in process 5252.
SEL: Select single-step process 5252
LLW: exit
infrun: target_wait (-1, status) =
infrun: 5252 [process 5252],
infrun: status->kind = stopped, signal = SIGCHLD
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x323d4ba7c4
infrun: random signal 20
infrun: stepi/nexti
infrun: stop_stepping
So the inferior got a SIGCHLD (because the fork child exited while
we're doing 'si'), and since that signal is set to "nostop noprint
pass" (by default), it's considered a random signal, so it should not
cause a stop. But, it resulted in an immediate a stop_stepping call
anyway. So the single-step never really finished.
This is a regression caused by:
[[PATCH] Do not respawn signals, take 2.]
https://sourceware.org/ml/gdb-patches/2012-06/msg00702.html
Specifically, caused by this change (as mentioned in the "the lost
step issue first" part of that mail):
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 53db335..3e8dbc8 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -4363,10 +4363,8 @@ process_event_stop_test:
(leaving the inferior at the step-resume-breakpoint without
actually executing it). Either way continue until the
breakpoint is really hit. */
- keep_going (ecs);
- return;
}
-
+ else
/* Handle cases caused by hitting a breakpoint. */
{
That made GDB fall through to the
> /* In all-stop mode, if we're currently stepping but have stopped in
> some other thread, we need to switch back to the stepped thread. */
> if (!non_stop)
part. However, if we don't have a stepped thread to get back to,
we'll now also fall through to all the "stepping" tests. For line
stepping, that'll turn out okay, as we'll just end up realizing the
thread is still in the stepping range, and needs to be re-stepped.
However, for stepi/nexti, we'll reach:
if (ecs->event_thread->control.step_range_end == 1)
{
/* It is stepi or nexti. We always want to stop stepping after
one instruction. */
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stepi/nexti\n");
ecs->event_thread->control.stop_step = 1;
print_end_stepping_range_reason ();
stop_stepping (ecs);
return;
}
and stop, even though the thread actually made no progress. The fix
is to restore the keep_going call, but put it after the "switch back
to the stepped thread" code, and before the stepping tests.
Tested on x86_64 Fedora 17, native and gdbserver. New test included.
gdb/
2013-10-18 Pedro Alves <palves@redhat.com>
PR gdb/16062
* infrun.c (handle_inferior_event): Keep going if we got a random
signal we should not stop for, instead of falling through to the
step tests.
gdb/testsuite/
2013-10-18 Pedro Alves <palves@redhat.com>
PR gdb/16062
* gdb.threads/stepi-random-signal.c: New file.
* gdb.threads/stepi-random-signal.exp: New file.
Tom Tromey [Thu, 17 Oct 2013 18:29:28 +0000 (18:29 +0000)]
fix for PR gdb/15995
This patch fixes PR gdb/15995.
The bug here is that gdb's printf command does not flush the output
stream. This makes a printf that is not newline-terminated interleave
incorrectly with other forms of output, such as that generated via a
call to an external program using "shell".
I note that the "output" command already does this flushing.
The fix is to call gdb_flush in printf_command.
Built and regtested on x86-64 Fedora 18.
New test case included.
This is a simple bug. target_disable_btrace and target_teardown_btrace,
both from gdb/target.c, do a "return" calling another function. But both
are marked as void. Despite the fact that the functions being called are
void as well, this is wrong. This patch fixes this by calling the functions
and then returning in the next line.
* create-version.sh: Align parameters to match those of
../../gdb/common/create-version.sh.
* Make-common.in (srcsim): New variable.
(version.c): Adjust call to create-version.sh as per above.
Chao-ying Fu [Mon, 14 Oct 2013 18:43:39 +0000 (18:43 +0000)]
2013-10-14 Chao-ying Fu <Chao-ying.Fu@imgtec.com>
* elfxx-mips.c (mips_elf_obj_tdata): Add abi_msa_bfd.
(mips_elf_merge_obj_attributes): Set abi_msa_bfd to the first object
file that has a Tag_GNU_MIPS_ABI_MSA attribute.
Merge Tag_GNU_MIPS_ABI_MSA attributes.
Alan Modra [Mon, 14 Oct 2013 02:53:01 +0000 (02:53 +0000)]
* output.h (Output_data_got::add_constant): Tidy.
(Output_data_got::add_constant_pair): New function.
* powerpc.cc (Output_data_got_powerpc): Override all Output_data_got
methods used so as to first call reserve_ent().
gdb/
* nios2-tdep.c (nios2_reg_names): Use "sstatus" rather than "ba"
as the preferred name of r30.
* nios2-linux-tdep.c (reg_offsets): Likewise.
* features/nios2-cpu.xml: Likewise.
* features/nios2-linux.c: Regenerated.
* features/nios2.c: Regenerated.
* regformats/nios2-linux.dat: Regenerated.
opcodes/
* nios2-opc.c (nios2_builtin_reg): Use "sstatus" rather than "ba"
as the primary name of r30.
gas/
* config/tc-nios2.c (nios2_consume_arg): Make the "ba" warning
also test/refer to "sstatus". Reformat the warning message.
gas/testsuite/
* gas/nios2/warn_nobreak.l: Update text of warning messages.
* gas/nios2/registers.s: Use "sstatus" rather than "ba"
as the primary name of r30.
* gas/nios2/registers.d: Likewise.
gdb/
2013-10-13 Jan Kratochvil <jan.kratochvil@redhat.com>
Canonicalize directories for EXEC_FILENAME.
* exec.c (exec_file_attach): Use gdb_realpath_keepfile for
exec_filename.
* utils.c (gdb_realpath_keepfile): New function.
* utils.h (gdb_realpath_keepfile): New declaration.
gdb/testsuite/
2013-10-13 Jan Kratochvil <jan.kratochvil@redhat.com>
Canonicalize directories for EXEC_FILENAME.
* gdb.base/argv0-symlink.exp
(kept file symbolic link name for info inferiors): New.
(kept directory symbolic link name): Setup kfail.
(kept directory symbolic link name for info inferiors): New.
bfd/
* elfxx-mips.c (mips_use_local_got_p): New function.
(mips_elf_count_got_symbols, mips_elf_calculate_relocation): Use it.
(_bfd_mips_elf_check_relocs): Set pointer_equality_needed for
GOT and absolute references.
ld/testsuite/
* ld-mips-elf/pic-and-nonpic-6-n32.ad,
ld-mips-elf/pic-and-nonpic-6-n32.dd,
ld-mips-elf/pic-and-nonpic-6-n32.gd,
ld-mips-elf/pic-and-nonpic-6-n32.nd,
ld-mips-elf/pic-and-nonpic-6-n32.rd,
ld-mips-elf/pic-and-nonpic-6-n64.ad,
ld-mips-elf/pic-and-nonpic-6-n64.dd,
ld-mips-elf/pic-and-nonpic-6-n64.gd,
ld-mips-elf/pic-and-nonpic-6-n64.nd,
ld-mips-elf/pic-and-nonpic-6-n64.rd,
ld-mips-elf/pic-and-nonpic-6-o32.ad,
ld-mips-elf/pic-and-nonpic-6-o32.dd,
ld-mips-elf/pic-and-nonpic-6-o32.gd,
ld-mips-elf/pic-and-nonpic-6-o32.nd,
ld-mips-elf/pic-and-nonpic-6-o32.rd: Fix symbol value of extf4.
No longer expect extf3, extf4 and extd2 to be in the global GOT.
Joel Brobecker [Fri, 11 Oct 2013 13:51:27 +0000 (13:51 +0000)]
Document the -catch-assert and -catch-exception new GDB/MI commands.
This patch adds documentation for the new GDB/MI commands "-catch-assert"
and "-catch-exception", meant to provide the same functionality as
the "catch assert", "catch exception" and "catch exception unhandled"
CLI commands.
In the GDB Manual, there was already a section for catchpoint comments,
so that seemed like a natural place to document the new commands. But
commands related to a given concept seem to have traditionally been
organized alphabetically, and I didn't want future commands to break
down logical pairing of various commands. For instance, "-catch-load"
and "-catch-unload" are quite "distant" from each other, and it is easy
to imagine a new comment which would alphabetically fall in between,
causing them to be separated. So I introduced subsections to prevent
that from happening.
gdb/ChangeLog:
* NEWS: Add entry documenting the new "-catch-assert" and
"-catch-exception" GDB/MI commands.
gdb/doc/ChangeLog:
* gdb.texinfo (Shared Library GDB/MI Catchpoint Commands):
New subsection inside which the "-catch-load" and "-catch-unload"
commands documentation is now placed.
(Ada Exception GDB/MI Catchpoint Commands): New subsection
documenting the "-catch-assert" and "-catch-exception" new
GDB/MI commands.
Joel Brobecker [Fri, 11 Oct 2013 13:48:19 +0000 (13:48 +0000)]
New GDB/MI commands to catch Ada exceptions
This patch introduces two new GDB/MI commands implementing the equivalent
of the "catch exception" and "catch assert" GDB/CLI commands.
gdb/ChangeLog:
* breakpoint.h (init_ada_exception_breakpoint): Add parameter
"enabled".
* breakpoint.c (init_ada_exception_breakpoint): Add parameter
"enabled". Set B->ENABLE_STATE accordingly.
* ada-lang.h (ada_exception_catchpoint_kind): Move here from
ada-lang.c.
(create_ada_exception_catchpoint): Add declaration.
* ada-lang.c (ada_exception_catchpoint_kind): Move to ada-lang.h.
(create_ada_exception_catchpoint): Make non-static. Add new
parameter "disabled". Use it in call to
init_ada_exception_breakpoint.
(catch_ada_exception_command): Add parameter "enabled" in call
to create_ada_exception_catchpoint.
(catch_assert_command): Likewise.
* mi/mi-cmds.h (mi_cmd_catch_assert, mi_cmd_catch_exception):
Add declarations.
* mi/mi-cmds.c (mi_cmds): Add the "catch-assert" and
"catch-exception" commands.
* mi/mi-cmd-catch.c: Add #include "ada-lang.h".
(mi_cmd_catch_assert, mi_cmd_catch_exception): New functions.
Joel Brobecker [Fri, 11 Oct 2013 13:45:27 +0000 (13:45 +0000)]
Add "ada_" prefix to enum ada_exception_catchpoint_kind
This is in preparation for making that type public, in order to be
able to use make create_ada_exception_catchpoint public as well,
making it usable from the GDB/MI implementation.
gdb/ChangeLog:
* ada-lang.c (enum ada_exception_catchpoint_kind): Renames
"enum exception_catchpoint_kind". Replace the "ex_" prefix
of all its enumerates with "ada_". Update the rest of this
file throughout.
Joel Brobecker [Fri, 11 Oct 2013 13:44:11 +0000 (13:44 +0000)]
Rework a bit Ada exception catchpoint support (in prep for GDB/MI)
This patch reworks a bit how the different steps required to insert
an Ada exception catchpoints are organized. They used to be:
1. Call a "decode" function which does:
1.a. Parse the command and its arguments
1.b. Create a SAL & OPS from some of those arguments
2. Call create_ada_exception_catchpoint using SAL as well
as some of the arguments extracted above.
The bulk of the change consists in integrating step (1.b) into
step (2) in order to turn create_ada_exception_catchpoint into
a function whose arguments are all user-level concepts. This
paves the way from a straightforward implementation of the equivalent
commands in the GDB/MI interpreter.
gdb/ChangeLog:
* ada-lang.c (ada_decode_exception_location): Delete.
(create_ada_exception_catchpoint): Remove arguments "sal",
"addr_string" and "ops". Add argument "ex_kind" instead.
Adjust implementation accordingly, calling ada_exception_sal
to get the entities it no longer gets passed as arguments.
Document the function's arguments.
(catch_ada_exception_command): Use catch_ada_exception_command_split
instead of ada_decode_exception_location, and update call to
create_ada_exception_catchpoint.
(catch_ada_assert_command_split): Renames
ada_decode_assert_location. Remove parameters "addr_string" and
"ops", and now returns void. Adjust implementation accordingly.
Update the function documentation.
(catch_assert_command): Use catch_ada_assert_command_split
instead of ada_decode_assert_location. Update call to
create_ada_exception_catchpoint.
One would have at least expected the debugger to warn about
not finding the file, similar to the error shown when using
a more interactive mode. Eg:
(gdb) source nonexistant-file
nonexistant-file: No such file or directory.
Not raising an error appears to be intentional, presumably in order
to prevent this situation from stoping the execution of a GDB script.
But the lack of at least a warning makes it harder for a user to
diagnose any issue, if the file was expected to be there and readable.
This patch adds a warning in that case:
% gdb -q -batch -ex 'source nonexistant-file'
warning: nonexistant-file: No such file or directory.
gdb/ChangeLog:
* utils.h (perror_warning_with_name): Add declaration.
* utils.c (perror_warning_with_name): New function.
* cli/cli-cmds.c (source_script_with_search): Add call to
perror_warning_with_name if from_tty is nul.
gdb/testsuite/ChangeLog:
* gdb.base/source-nofile.gdb: New file.
* gdb.base/source.exp: Add two tests verifying the behavior when
the "source" command is given a non-existant filename.
Joel Brobecker [Fri, 11 Oct 2013 08:20:10 +0000 (08:20 +0000)]
new function perror_string extracted out of throw_perror_with_name.
The main purpose of this patch is to extract the part of
throw_perror_with_name that computes a string providing the system
error message combined with a prefix string. This will become useful
later on to provide a routine which prints a warning using that
perror_string, rather than throwing an error.
gdb/ChangeLog:
* utils.c (perror_string): New function, extracted out of
throw_perror_with_name.
(throw_perror_with_name): Rework to use perror_string.
Yao Qi [Fri, 11 Oct 2013 07:27:46 +0000 (07:27 +0000)]
gdb/testsuite/
* gdb.mi/mi-catch-load.c: Remove the include of "dlfcn.h".
[__WIN32__]: Include "windows.h" and define macro 'dlopen'
and 'dlclose'.
[!__WIN32__]: Include "dlfcn.h".
* gdb.mi/mi-catch-load.exp: Set up kfail.
Roland McGrath [Thu, 10 Oct 2013 17:43:37 +0000 (17:43 +0000)]
opcodes/
* cr16-opc.c (REG): Cast NAME to 'reg' enum type to suppress
possible compiler warnings when the union's initializer is
actually meant for the 'preg' enum typed member.
* crx-opc.c (REG): Likewise.
Joel Brobecker [Thu, 10 Oct 2013 05:50:20 +0000 (05:50 +0000)]
Rename "set/show remotebaud" command into "set/show serial baud"
This patch renames the "set/show remotebaud" commands into
"set/show serial baud", and moves its implementation into serial.c.
It also moves the "baud_rate" global from top.c to serial.c, where
the new code is being added (the alternative was to add an include
of target.h).
And to facilitate the transition to the new setting name, this
patch also preserves the old commands, and marks them as deprecated
to alert the users of the change.
gdb/ChangeLog:
* cli/cli-cmds.c (show_baud_rate): Moved to serial.c as
serial_baud_show_cmd.
(_initialize_cli_cmds): Delete the code creating the
"set/show remotebaud" commands.
* serial.c (baud_rate): Move here from top.c.
(serial_baud_show_cmd): Move here from cli/cli-cmds.c.
(_initialize_serial): Create "set/show serial baud" commands.
Add "set/show remotebaud" command aliases.
* top.c (baud_rate): Moved to serial.c.
* NEWS: Document the new "set/show serial baud" commands,
replacing "set/show remotebaud".
gdb/doc/ChangeLog:
* gdb.texinfo: Replace "set remotebaud" and "show remotebaud"
by "set serial baud" and "show serial baud" (resp) throughout.
Roland McGrath [Wed, 9 Oct 2013 18:16:18 +0000 (18:16 +0000)]
ld/
* emultempl/elf32.em (id_note_section_size): Use ATTRIBUTE_UNUSED
rather than a dummy assignment for unused parameter.
* plugin.c (get_input_file, release_input_file): Likewise.
projects / deliverable / binutils-gdb.git / log
