diff options
| author | Pedro Alves <palves@redhat.com> | 2015-03-04 20:41:16 +0000 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2015-03-04 20:41:16 +0000 |
| commit | faf09f0119da40d9b408021ad5665a906e00ee59 (patch) | |
| tree | c1cee6b85358a10f56b1279ab2864137665f26af /gdb/ChangeLog | |
| parent | f7e6eed5283bb5c8a3598dd986dc922b9a794f58 (diff) | |
| download | gdb-faf09f0119da40d9b408021ad5665a906e00ee59.zip gdb-faf09f0119da40d9b408021ad5665a906e00ee59.tar.gz gdb-faf09f0119da40d9b408021ad5665a906e00ee59.tar.bz2 | |
Linux native: Use TRAP_BRKPT/TRAP_HWBPT
This patch adjusts the native Linux target backend to tell the core
whether a trap was caused by a breakpoint.
It teaches the target to get that information out of the si_code of
the SIGTRAP siginfo.
Tested on x86-64 Fedora 20, s390 RHEL 7, and PPC64 Fedora 18. An
earlier version was tested on ARM Fedora 21.
gdb/ChangeLog:
2015-03-04 Pedro Alves <palves@redhat.com>
* linux-nat.c (save_sigtrap): Check for breakpoints before
checking watchpoints.
(status_callback) [USE_SIGTRAP_SIGINFO]: Don't check whether a
breakpoint is inserted if relying on SIGTRAP's siginfo.si_code.
(check_stopped_by_breakpoint) [USE_SIGTRAP_SIGINFO]: Decide whether
a breakpoint triggered based on the SIGTRAP's siginfo.si_code.
(linux_nat_stopped_by_sw_breakpoint)
(linux_nat_supports_stopped_by_sw_breakpoint)
(linux_nat_stopped_by_hw_breakpoint)
(linux_nat_supports_stopped_by_hw_breakpoint): New functions.
(linux_nat_wait_1): Don't re-increment the PC if relying on
SIGTRAP's siginfo->si_code.
(linux_nat_add_target): Install new target methods.
* linux-thread-db.c (check_event): Don't account for breakpoint PC
offset if the target already adjusted the PC.
* nat/linux-ptrace.h (USE_SIGTRAP_SIGINFO): New.
(GDB_ARCH_TRAP_BRKPT): New.
(TRAP_HWBKPT): Define if not already defined.
Diffstat (limited to 'gdb/ChangeLog')
| -rw-r--r-- | gdb/ChangeLog | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 22bda6a..1efb944 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,26 @@ 2015-03-04 Pedro Alves <palves@redhat.com> + * linux-nat.c (save_sigtrap): Check for breakpoints before + checking watchpoints. + (status_callback) [USE_SIGTRAP_SIGINFO]: Don't check whether a + breakpoint is inserted if relying on SIGTRAP's siginfo.si_code. + (check_stopped_by_breakpoint) [USE_SIGTRAP_SIGINFO]: Decide whether + a breakpoint triggered based on the SIGTRAP's siginfo.si_code. + (linux_nat_stopped_by_sw_breakpoint) + (linux_nat_supports_stopped_by_sw_breakpoint) + (linux_nat_stopped_by_hw_breakpoint) + (linux_nat_supports_stopped_by_hw_breakpoint): New functions. + (linux_nat_wait_1): Don't re-increment the PC if relying on + SIGTRAP's siginfo->si_code. + (linux_nat_add_target): Install new target methods. + * linux-thread-db.c (check_event): Don't account for breakpoint PC + offset if the target already adjusted the PC. + * nat/linux-ptrace.h (USE_SIGTRAP_SIGINFO): New. + (GDB_ARCH_TRAP_BRKPT): New. + (TRAP_HWBKPT): Define if not already defined. + +2015-03-04 Pedro Alves <palves@redhat.com> + * NEWS: Mention the new "swbreak" and "hwbreak" stop reasons. * remote.c (struct remote_state) <remote_stopped_by_watchpoint_p>: Delete field. |