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https://github.com/darlinghq/darling-gdb.git
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gdb/
Fix step_resume_breakpoint unsaved during an infcall. * gdbthread.h (struct thread_control_state): Move here field step_resume_breakpoint ... (struct thread_info): ... from here. * infrun.c (save_infcall_control_state): Reset control.step_resume_breakpoint to NULL. (restore_infcall_control_state, discard_infcall_control_state): Delete control.step_resume_breakpoint. * arm-linux-tdep.c, infrun.c, thread.c: Update all the references to the moved field. gdb/testsuite/ Fix step_resume_breakpoint unsaved during an infcall. * gdb.base/step-resume-infcall.exp: New file. * gdb.base/step-resume-infcall.c: New file.
This commit is contained in:
Jan Kratochvil
parent
16c381f058
commit
8358c15c55
@ -1,3 +1,16 @@
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2010-11-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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Fix step_resume_breakpoint unsaved during an infcall.
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* gdbthread.h (struct thread_control_state): Move here field
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step_resume_breakpoint ...
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(struct thread_info): ... from here.
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* infrun.c (save_infcall_control_state): Reset
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control.step_resume_breakpoint to NULL.
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(restore_infcall_control_state, discard_infcall_control_state): Delete
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control.step_resume_breakpoint.
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* arm-linux-tdep.c, infrun.c, thread.c: Update all the references to
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the moved field.
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2010-11-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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Rename and move inferior_thread_state and inferior_status.
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@ -791,7 +791,8 @@ arm_linux_copy_svc (struct gdbarch *gdbarch, uint32_t insn, CORE_ADDR to,
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fprintf_unfiltered (gdb_stdlog, "displaced: unwind pc = %lx. "
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"Setting momentary breakpoint.\n", (unsigned long) return_to);
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gdb_assert (inferior_thread ()->step_resume_breakpoint == NULL);
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gdb_assert (inferior_thread ()->control.step_resume_breakpoint
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== NULL);
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sal = find_pc_line (return_to, 0);
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sal.pc = return_to;
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@ -802,7 +803,7 @@ arm_linux_copy_svc (struct gdbarch *gdbarch, uint32_t insn, CORE_ADDR to,
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if (frame)
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{
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inferior_thread ()->step_resume_breakpoint
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inferior_thread ()->control.step_resume_breakpoint
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= set_momentary_breakpoint (gdbarch, sal, get_frame_id (frame),
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bp_step_resume);
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@ -37,6 +37,9 @@ struct thread_control_state
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{
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/* User/external stepping state. */
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/* Step-resume or longjmp-resume breakpoint. */
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struct breakpoint *step_resume_breakpoint;
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/* Range to single step within.
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If this is nonzero, respond to a single-step signal by continuing
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@ -151,11 +154,6 @@ struct thread_info
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call. See `struct thread_suspend_state'. */
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struct thread_suspend_state suspend;
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/* User/external stepping state. */
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/* Step-resume or longjmp-resume breakpoint. */
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struct breakpoint *step_resume_breakpoint;
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int current_line;
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struct symtab *current_symtab;
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52
gdb/infrun.c
52
gdb/infrun.c
@ -424,8 +424,8 @@ follow_fork (void)
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preserve the stepping state in the fork child. */
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if (follow_child && should_resume)
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{
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step_resume_breakpoint
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= clone_momentary_breakpoint (tp->step_resume_breakpoint);
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step_resume_breakpoint = clone_momentary_breakpoint
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(tp->control.step_resume_breakpoint);
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step_range_start = tp->control.step_range_start;
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step_range_end = tp->control.step_range_end;
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step_frame_id = tp->control.step_frame_id;
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@ -476,7 +476,8 @@ follow_fork (void)
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if (should_resume)
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{
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tp = inferior_thread ();
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tp->step_resume_breakpoint = step_resume_breakpoint;
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tp->control.step_resume_breakpoint
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= step_resume_breakpoint;
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tp->control.step_range_start = step_range_start;
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tp->control.step_range_end = step_range_end;
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tp->control.step_frame_id = step_frame_id;
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@ -530,8 +531,8 @@ follow_inferior_reset_breakpoints (void)
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"threads". We must update the bp's notion of which thread
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it is for, or it'll be ignored when it triggers. */
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if (tp->step_resume_breakpoint)
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breakpoint_re_set_thread (tp->step_resume_breakpoint);
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if (tp->control.step_resume_breakpoint)
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breakpoint_re_set_thread (tp->control.step_resume_breakpoint);
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/* Reinsert all breakpoints in the child. The user may have set
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breakpoints after catching the fork, in which case those
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@ -769,7 +770,7 @@ follow_exec (ptid_t pid, char *execd_pathname)
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/* If there was one, it's gone now. We cannot truly step-to-next
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statement through an exec(). */
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th->step_resume_breakpoint = NULL;
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th->control.step_resume_breakpoint = NULL;
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th->control.step_range_start = 0;
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th->control.step_range_end = 0;
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@ -3951,7 +3952,8 @@ infrun: no user watchpoint explains watchpoint SIGTRAP, ignoring\n");
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|| stopped_by_watchpoint
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|| ecs->event_thread->control.trap_expected
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|| (ecs->event_thread->control.step_range_end
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&& ecs->event_thread->step_resume_breakpoint == NULL));
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&& (ecs->event_thread->control.step_resume_breakpoint
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== NULL)));
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else
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{
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ecs->random_signal = !bpstat_explains_signal
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@ -4019,7 +4021,7 @@ process_event_stop_test:
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if (ecs->event_thread->prev_pc == stop_pc
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&& ecs->event_thread->control.trap_expected
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&& ecs->event_thread->step_resume_breakpoint == NULL)
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&& ecs->event_thread->control.step_resume_breakpoint == NULL)
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{
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/* We were just starting a new sequence, attempting to
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single-step off of a breakpoint and expecting a SIGTRAP.
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@ -4048,7 +4050,7 @@ process_event_stop_test:
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&& stop_pc < ecs->event_thread->control.step_range_end)
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&& frame_id_eq (get_stack_frame_id (frame),
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ecs->event_thread->control.step_stack_frame_id)
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&& ecs->event_thread->step_resume_breakpoint == NULL)
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&& ecs->event_thread->control.step_resume_breakpoint == NULL)
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{
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/* The inferior is about to take a signal that will take it
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out of the single step range. Set a breakpoint at the
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@ -4135,7 +4137,8 @@ infrun: BPSTAT_WHAT_SET_LONGJMP_RESUME (!gdbarch_get_longjmp_target)\n");
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fprintf_unfiltered (gdb_stdlog,
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"infrun: BPSTAT_WHAT_CLEAR_LONGJMP_RESUME\n");
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gdb_assert (ecs->event_thread->step_resume_breakpoint != NULL);
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gdb_assert (ecs->event_thread->control.step_resume_breakpoint
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!= NULL);
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delete_step_resume_breakpoint (ecs->event_thread);
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ecs->event_thread->control.stop_step = 1;
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@ -4311,7 +4314,7 @@ infrun: not switching back to stepped thread, it has vanished\n");
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return;
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}
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if (ecs->event_thread->step_resume_breakpoint)
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if (ecs->event_thread->control.step_resume_breakpoint)
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{
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if (debug_infrun)
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fprintf_unfiltered (gdb_stdlog,
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@ -4862,10 +4865,11 @@ infrun: not switching back to stepped thread, it has vanished\n");
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static int
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currently_stepping (struct thread_info *tp)
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{
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return ((tp->control.step_range_end && tp->step_resume_breakpoint == NULL)
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|| tp->control.trap_expected
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|| tp->stepping_through_solib_after_catch
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|| bpstat_should_step ());
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return ((tp->control.step_range_end
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&& tp->control.step_resume_breakpoint == NULL)
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|| tp->control.trap_expected
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|| tp->stepping_through_solib_after_catch
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|| bpstat_should_step ());
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}
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/* Returns true if any thread *but* the one passed in "data" is in the
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@ -5010,14 +5014,14 @@ insert_step_resume_breakpoint_at_sal (struct gdbarch *gdbarch,
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/* There should never be more than one step-resume or longjmp-resume
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breakpoint per thread, so we should never be setting a new
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step_resume_breakpoint when one is already active. */
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gdb_assert (inferior_thread ()->step_resume_breakpoint == NULL);
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gdb_assert (inferior_thread ()->control.step_resume_breakpoint == NULL);
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if (debug_infrun)
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fprintf_unfiltered (gdb_stdlog,
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"infrun: inserting step-resume breakpoint at %s\n",
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paddress (gdbarch, sr_sal.pc));
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inferior_thread ()->step_resume_breakpoint
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inferior_thread ()->control.step_resume_breakpoint
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= set_momentary_breakpoint (gdbarch, sr_sal, sr_id, bp_step_resume);
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}
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@ -5094,14 +5098,14 @@ insert_longjmp_resume_breakpoint (struct gdbarch *gdbarch, CORE_ADDR pc)
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/* There should never be more than one step-resume or longjmp-resume
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breakpoint per thread, so we should never be setting a new
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longjmp_resume_breakpoint when one is already active. */
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gdb_assert (inferior_thread ()->step_resume_breakpoint == NULL);
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gdb_assert (inferior_thread ()->control.step_resume_breakpoint == NULL);
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if (debug_infrun)
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fprintf_unfiltered (gdb_stdlog,
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"infrun: inserting longjmp-resume breakpoint at %s\n",
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paddress (gdbarch, pc));
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inferior_thread ()->step_resume_breakpoint =
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inferior_thread ()->control.step_resume_breakpoint =
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set_momentary_breakpoint_at_pc (gdbarch, pc, bp_longjmp_resume);
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}
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@ -6212,6 +6216,8 @@ save_infcall_control_state (void)
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inf_status->thread_control = tp->control;
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inf_status->inferior_control = inf->control;
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tp->control.step_resume_breakpoint = NULL;
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/* Save original bpstat chain to INF_STATUS; replace it in TP with copy of
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chain. If caller's caller is walking the chain, they'll be happier if we
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hand them back the original chain when restore_infcall_control_state is
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@ -6257,6 +6263,9 @@ restore_infcall_control_state (struct infcall_control_state *inf_status)
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struct thread_info *tp = inferior_thread ();
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struct inferior *inf = current_inferior ();
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if (tp->control.step_resume_breakpoint)
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tp->control.step_resume_breakpoint->disposition = disp_del_at_next_stop;
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/* Handle the bpstat_copy of the chain. */
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bpstat_clear (&tp->control.stop_bpstat);
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@ -6301,8 +6310,13 @@ make_cleanup_restore_infcall_control_state
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void
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discard_infcall_control_state (struct infcall_control_state *inf_status)
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{
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if (inf_status->thread_control.step_resume_breakpoint)
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inf_status->thread_control.step_resume_breakpoint->disposition
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= disp_del_at_next_stop;
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/* See save_infcall_control_state for info on stop_bpstat. */
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bpstat_clear (&inf_status->thread_control.stop_bpstat);
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xfree (inf_status);
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}
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@ -1,3 +1,9 @@
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2010-11-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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Fix step_resume_breakpoint unsaved during an infcall.
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* gdb.base/step-resume-infcall.exp: New file.
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* gdb.base/step-resume-infcall.c: New file.
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2010-11-24 Edjunior Machado <emachado@br.ibm.com>
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* gdb.asm/powerpc.inc: Use 'sys_exit' on gdbasm_exit0 macro.
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47
gdb/testsuite/gdb.base/step-resume-infcall.c
Normal file
47
gdb/testsuite/gdb.base/step-resume-infcall.c
Normal file
@ -0,0 +1,47 @@
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/* This testcase is part of GDB, the GNU debugger.
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Copyright 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <stdio.h>
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volatile int cond_hit;
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int
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cond (void)
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{
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cond_hit++;
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return 1;
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}
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int
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func (void)
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{
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return 0; /* in-func */
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}
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int
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main (void)
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{
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/* Variable is used so that there is always at least one instruction on the
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same line after FUNC returns. */
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int i = func (); /* call-func */
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/* Dummy calls. */
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cond ();
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func ();
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return 0;
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}
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52
gdb/testsuite/gdb.base/step-resume-infcall.exp
Normal file
52
gdb/testsuite/gdb.base/step-resume-infcall.exp
Normal file
@ -0,0 +1,52 @@
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# Copyright (C) 2010 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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set testfile "step-resume-infcall"
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if { [prepare_for_testing ${testfile}.exp ${testfile}] } {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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gdb_test "step" " in-func .*"
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gdb_test "up" " call-func .*"
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gdb_test_no_output {set $b=$pc}
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if ![runto_main] {
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return -1
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}
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gdb_breakpoint {*$b if cond ()}
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set test {print $bpnum}
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gdb_test_multiple $test $test {
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-re " = (\[0-9\]+)\r\n$gdb_prompt $" {
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set caller_bp $expect_out(1,string)
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pass $test
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}
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}
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# Debug only:
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gdb_test "disass/m" ".*"
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gdb_test "info breakpoints" ".*"
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gdb_test "next" "Breakpoint $caller_bp, .* call-func .*"
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# `cond-hit' is now hit twice; but it may not be in the future. It is
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# currently not a bug so it is not KFAILed.
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gdb_test "p cond_hit" { = [12]}
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12
gdb/thread.c
12
gdb/thread.c
@ -83,10 +83,10 @@ inferior_thread (void)
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void
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delete_step_resume_breakpoint (struct thread_info *tp)
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{
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if (tp && tp->step_resume_breakpoint)
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if (tp && tp->control.step_resume_breakpoint)
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{
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delete_breakpoint (tp->step_resume_breakpoint);
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tp->step_resume_breakpoint = NULL;
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delete_breakpoint (tp->control.step_resume_breakpoint);
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tp->control.step_resume_breakpoint = NULL;
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}
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}
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@ -97,10 +97,10 @@ clear_thread_inferior_resources (struct thread_info *tp)
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but not any user-specified thread-specific breakpoints. We can not
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delete the breakpoint straight-off, because the inferior might not
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be stopped at the moment. */
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if (tp->step_resume_breakpoint)
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if (tp->control.step_resume_breakpoint)
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{
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tp->step_resume_breakpoint->disposition = disp_del_at_next_stop;
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tp->step_resume_breakpoint = NULL;
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tp->control.step_resume_breakpoint->disposition = disp_del_at_next_stop;
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tp->control.step_resume_breakpoint = NULL;
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}
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bpstat_clear (&tp->control.stop_bpstat);
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