reinsert auto-delete breakpoints.
* mem-break.c (struct breakpoint): Change return type of handler to
int.
(set_breakpoint_at): Update handler type.
(reinsert_breakpoint_handler): Return 1 instead of calling
delete_breakpoint.
(reinsert_breakpoint_by_bp): Check for the original breakpoint before
setting a new one.
(check_breakpoints): Delete auto-delete breakpoints and return 2.
* mem-break.h (set_breakpoint_at): Update handler type.
* thread-db.c (thread_db_create_event, thread_db_create_event): Update.
* win32-low.c (auto_delete_breakpoint): New.
(get_child_debug_event): Use it.
+2007-12-18 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * linux-low.c (linux_wait_for_event): Update messages. Do not
+ reinsert auto-delete breakpoints.
+ * mem-break.c (struct breakpoint): Change return type of handler to
+ int.
+ (set_breakpoint_at): Update handler type.
+ (reinsert_breakpoint_handler): Return 1 instead of calling
+ delete_breakpoint.
+ (reinsert_breakpoint_by_bp): Check for the original breakpoint before
+ setting a new one.
+ (check_breakpoints): Delete auto-delete breakpoints and return 2.
+ * mem-break.h (set_breakpoint_at): Update handler type.
+ * thread-db.c (thread_db_create_event, thread_db_create_event): Update.
+ * win32-low.c (auto_delete_breakpoint): New.
+ (get_child_debug_event): Use it.
+
2007-12-16 Daniel Jacobowitz <dan@codesourcery.com>
* configure.ac: Check for pread and pwrite.
CORE_ADDR stop_pc;
struct process_info *event_child;
int wstat;
+ int bp_status;
/* Check for a process with a pending status. */
/* It is possible that the user changed the pending task's registers since
continue;
}
- if (debug_threads)
- fprintf (stderr, "Hit a (non-reinsert) breakpoint.\n");
+ bp_status = check_breakpoints (stop_pc);
- if (check_breakpoints (stop_pc) != 0)
+ if (bp_status != 0)
{
+ if (debug_threads)
+ fprintf (stderr, "Hit a gdbserver breakpoint.\n");
+
/* We hit one of our own breakpoints. We mark it as a pending
breakpoint, so that check_removed_breakpoint () will do the PC
adjustment for us at the appropriate time. */
event_child->pending_is_breakpoint = 1;
event_child->pending_stop_pc = stop_pc;
- /* Now we need to put the breakpoint back. We continue in the event
+ /* We may need to put the breakpoint back. We continue in the event
loop instead of simply replacing the breakpoint right away,
in order to not lose signals sent to the thread that hit the
breakpoint. Unfortunately this increases the window where another
Otherwise, call the target function to figure out where we need
our temporary breakpoint, create it, and continue executing this
process. */
- if (the_low_target.breakpoint_reinsert_addr == NULL)
+ if (bp_status == 2)
+ /* No need to reinsert. */
+ linux_resume_one_process (&event_child->head, 0, 0, NULL);
+ else if (the_low_target.breakpoint_reinsert_addr == NULL)
{
event_child->bp_reinsert = stop_pc;
uninsert_breakpoint (stop_pc);
continue;
}
+ if (debug_threads)
+ fprintf (stderr, "Hit a non-gdbserver breakpoint.\n");
+
/* If we were single-stepping, we definitely want to report the
SIGTRAP. The single-step operation has completed, so also
clear the stepping flag; in general this does not matter,
in the *next chain somewhere). */
struct breakpoint *breakpoint_to_reinsert;
- /* Function to call when we hit this breakpoint. */
- void (*handler) (CORE_ADDR);
+ /* Function to call when we hit this breakpoint. If it returns 1,
+ the breakpoint will be deleted; 0, it will be reinserted for
+ another round. */
+ int (*handler) (CORE_ADDR);
};
struct breakpoint *breakpoints;
void
-set_breakpoint_at (CORE_ADDR where, void (*handler) (CORE_ADDR))
+set_breakpoint_at (CORE_ADDR where, int (*handler) (CORE_ADDR))
{
struct breakpoint *bp;
delete_breakpoint (bp);
}
-static void
+static int
reinsert_breakpoint_handler (CORE_ADDR stop_pc)
{
struct breakpoint *stop_bp, *orig_bp;
(*the_target->write_memory) (orig_bp->pc, breakpoint_data,
breakpoint_len);
orig_bp->reinserting = 0;
- delete_breakpoint (stop_bp);
+ return 1;
}
void
{
struct breakpoint *bp, *orig_bp;
- set_breakpoint_at (stop_at, reinsert_breakpoint_handler);
-
orig_bp = find_breakpoint_at (stop_pc);
if (orig_bp == NULL)
error ("Could not find original breakpoint in list.");
+ set_breakpoint_at (stop_at, reinsert_breakpoint_handler);
+
bp = find_breakpoint_at (stop_at);
if (bp == NULL)
error ("Could not find breakpoint in list (reinserting by breakpoint).");
return 0;
}
- (*bp->handler) (bp->pc);
- return 1;
+ if ((*bp->handler) (bp->pc))
+ {
+ delete_breakpoint (bp);
+ return 2;
+ }
+ else
+ return 1;
}
void
/* Breakpoints are opaque. */
/* Create a new breakpoint at WHERE, and call HANDLER when
- it is hit. */
+ it is hit. HANDLER should return 1 if the breakpoint
+ should be deleted, 0 otherwise. */
void set_breakpoint_at (CORE_ADDR where,
- void (*handler) (CORE_ADDR));
+ int (*handler) (CORE_ADDR));
/* Delete a breakpoint previously inserted at ADDR with
set_breakpoint_at. */
}
#endif
-static void
+static int
thread_db_create_event (CORE_ADDR where)
{
td_event_msg_t msg;
/* msg.event == TD_EVENT_CREATE */
find_new_threads_callback (msg.th_p, NULL);
+
+ return 0;
}
#if 0
-static void
+static int
thread_db_death_event (CORE_ADDR where)
{
if (debug_threads)
fprintf (stderr, "Thread death event.\n");
+
+ return 0;
}
#endif
for_each_inferior (&all_threads, suspend_one_thread);
}
+#ifdef _WIN32_WCE
+static int
+auto_delete_breakpoint (CORE_ADDR stop_pc)
+{
+ return 1;
+}
+#endif
+
/* Get the next event from the child. */
static int
it is hit. */
set_breakpoint_at ((CORE_ADDR) (long) current_event.u
.CreateProcessInfo.lpStartAddress,
- delete_breakpoint_at);
+ auto_delete_breakpoint);
}
#endif
break;
projects / external / binutils.git / commitdiff