From: Pedro Alves <palves@redhat.com>
To: gdb-patches@sourceware.org
Subject: [PATCH 02/18] Change adjust_pc_after_break's prototype
Date: Thu, 21 May 2015 23:19:00 -0000 [thread overview]
Message-ID: <1432250354-2721-3-git-send-email-palves@redhat.com> (raw)
In-Reply-To: <1432250354-2721-1-git-send-email-palves@redhat.com>
Prepare to use it in contexts without an ecs handy. Follow up patches
will make use of this.
gdb/ChangeLog:
2015-05-21 Pedro Alves <pedro@codesourcery.com>
* infrun.c (adjust_pc_after_break): Now takes thread_info and
waitstatus pointers instead of an ecs. Adjust.
(handle_inferior_event): Adjust caller.
---
gdb/infrun.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 537de36..cce021d 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -3432,8 +3432,14 @@ context_switch (ptid_t ptid)
switch_to_thread (ptid);
}
+/* If the target can't tell whether we've hit breakpoints
+ (target_supports_stopped_by_sw_breakpoint), and we got a SIGTRAP,
+ check whether that could have been caused by a breakpoint. If so,
+ adjust the PC, per gdbarch_decr_pc_after_break. */
+
static void
-adjust_pc_after_break (struct execution_control_state *ecs)
+adjust_pc_after_break (struct thread_info *thread,
+ struct target_waitstatus *ws)
{
struct regcache *regcache;
struct gdbarch *gdbarch;
@@ -3461,10 +3467,10 @@ adjust_pc_after_break (struct execution_control_state *ecs)
target with both of these set in GDB history, and it seems unlikely to be
correct, so gdbarch_have_nonsteppable_watchpoint is not checked here. */
- if (ecs->ws.kind != TARGET_WAITKIND_STOPPED)
+ if (ws->kind != TARGET_WAITKIND_STOPPED)
return;
- if (ecs->ws.value.sig != GDB_SIGNAL_TRAP)
+ if (ws->value.sig != GDB_SIGNAL_TRAP)
return;
/* In reverse execution, when a breakpoint is hit, the instruction
@@ -3510,7 +3516,7 @@ adjust_pc_after_break (struct execution_control_state *ecs)
/* If this target does not decrement the PC after breakpoints, then
we have nothing to do. */
- regcache = get_thread_regcache (ecs->ptid);
+ regcache = get_thread_regcache (thread->ptid);
gdbarch = get_regcache_arch (regcache);
decr_pc = gdbarch_decr_pc_after_break (gdbarch);
@@ -3564,10 +3570,10 @@ adjust_pc_after_break (struct execution_control_state *ecs)
software breakpoint. In this case (prev_pc == breakpoint_pc),
we also need to back up to the breakpoint address. */
- if (thread_has_single_step_breakpoints_set (ecs->event_thread)
- || !currently_stepping (ecs->event_thread)
- || (ecs->event_thread->stepped_breakpoint
- && ecs->event_thread->prev_pc == breakpoint_pc))
+ if (thread_has_single_step_breakpoints_set (thread)
+ || !currently_stepping (thread)
+ || (thread->stepped_breakpoint
+ && thread->prev_pc == breakpoint_pc))
regcache_write_pc (regcache, breakpoint_pc);
do_cleanups (old_cleanups);
@@ -3748,7 +3754,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs)
}
/* Dependent on valid ECS->EVENT_THREAD. */
- adjust_pc_after_break (ecs);
+ adjust_pc_after_break (ecs->event_thread, &ecs->ws);
/* Dependent on the current PC value modified by adjust_pc_after_break. */
reinit_frame_cache ();
--
1.9.3
next prev parent reply other threads:[~2015-05-21 23:19 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-21 23:19 [PATCH v4 00/18] All-stop on top of non-stop Pedro Alves
2015-05-21 23:19 ` [PATCH 05/18] Embed the pending step-over chain in thread_info objects Pedro Alves
2015-05-21 23:19 ` Pedro Alves [this message]
2015-05-21 23:19 ` [PATCH 06/18] Use keep_going in proceed and start_step_over too Pedro Alves
2015-05-21 23:19 ` [PATCH 09/18] Factor out code to re-resume stepped thread Pedro Alves
2015-05-21 23:19 ` [PATCH 16/18] PPC64: Fix gdb.arch/ppc64-atomic-inst.exp with displaced stepping Pedro Alves
2015-05-21 23:19 ` [PATCH 14/18] Fix step-over-{trips-on-watchpoint|lands-on-breakpoint}.exp race Pedro Alves
2015-05-21 23:19 ` [PATCH 18/18] native Linux: enable always non-stop by default Pedro Alves
2015-05-21 23:19 ` [PATCH 01/18] Fix and test "checkpoint" in non-stop mode Pedro Alves
2015-05-21 23:19 ` [PATCH 08/18] Add comments to currently_stepping and target_resume Pedro Alves
2015-05-21 23:19 ` [PATCH 12/18] Fix signal-while-stepping-over-bp-other-thread.exp on targets always in non-stop Pedro Alves
2015-05-21 23:19 ` [PATCH 11/18] Implement all-stop on top of a target running non-stop mode Pedro Alves
2015-09-11 20:53 ` Jan Kratochvil
2015-09-14 14:24 ` Pedro Alves
2015-05-21 23:19 ` [PATCH 03/18] remote.c/all-stop: Implement TARGET_WAITKIND_NO_RESUMED and TARGET_WNOHANG Pedro Alves
2015-05-21 23:19 ` [PATCH 04/18] Make thread_still_needs_step_over consider stepping_over_watchpoint too Pedro Alves
2015-05-21 23:25 ` [PATCH 07/18] Misc switch_back_to_stepped_thread cleanups Pedro Alves
2015-05-21 23:28 ` [PATCH 13/18] Fix interrupt-noterm.exp on targets always in non-stop Pedro Alves
2015-05-21 23:50 ` [PATCH 17/18] S/390: displaced stepping and PC-relative RIL-b/RIL-c instructions Pedro Alves
2015-05-21 23:56 ` [PATCH 10/18] Teach non-stop to do in-line step-overs (stop all, step, restart) Pedro Alves
2015-05-21 23:59 ` [PATCH 15/18] Disable displaced stepping if trying it fails Pedro Alves
2015-08-07 16:58 ` [PATCH v4 00/18] All-stop on top of non-stop Pedro Alves
2015-08-12 18:32 ` Joel Brobecker
2015-08-12 19:05 ` Pedro Alves
2015-08-12 20:26 ` Joel Brobecker
2015-08-12 20:31 ` Luis Machado
2015-08-12 20:50 ` Joel Brobecker
2015-08-12 21:07 ` Luis Machado
2015-08-13 16:04 ` Pedro Alves
2015-08-13 18:17 ` Joel Brobecker
2015-08-13 1:46 ` [pushed] gdb.base/dso2dso.exp sometimes broken Joel Brobecker
2015-08-13 17:27 ` [PATCH v4 00/18] All-stop on top of non-stop Pedro Alves
2015-08-13 18:29 ` Joel Brobecker
2015-08-12 19:39 ` Luis Machado
2015-08-12 19:51 ` Sergio Durigan Junior
2015-08-12 19:59 ` Joel Brobecker
2015-08-12 20:18 ` Luis Machado
2015-08-12 20:33 ` Joel Brobecker
2015-08-12 20:40 ` Luis Machado
2015-08-12 20:56 ` Joel Brobecker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1432250354-2721-3-git-send-email-palves@redhat.com \
--to=palves@redhat.com \
--cc=gdb-patches@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).