* linux-low.c (linux_wait_for_event_1): Move passing the signal to

	the inferior right away from here...
	(linux_wait_1): ... to here, and adjust to check the thread's
	last_resume_kind instead of the lwp's step or stop_expected flags.

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 3f0b0fb..e4058dc 100644 (file)
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,10 @@
+2010-05-03  Pedro Alves  <pedro@codesourcery.com>
+
+       * linux-low.c (linux_wait_for_event_1): Move passing the signal to
+       the inferior right away from here...
+       (linux_wait_1): ... to here, and adjust to check the thread's
+       last_resume_kind instead of the lwp's step or stop_expected flags.
+
 2010-05-02  Pedro Alves  <pedro@codesourcery.com>
 
        * README: Use consistent `GDB' and `GDBserver' spellings.

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 65a87f6..36930fe 100644 (file)
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -1314,43 +1314,6 @@ linux_wait_for_event_1 (ptid_t ptid, int *wstat, int options)
          continue;
        }
 
-      /* If GDB is not interested in this signal, don't stop other
-        threads, and don't report it to GDB.  Just resume the
-        inferior right away.  We do this for threading-related
-        signals as well as any that GDB specifically requested we
-        ignore.  But never ignore SIGSTOP if we sent it ourselves,
-        and do not ignore signals when stepping - they may require
-        special handling to skip the signal handler.  */
-      /* FIXME drow/2002-06-09: Get signal numbers from the inferior's
-        thread library?  */
-      if (WIFSTOPPED (*wstat)
-         && !event_child->stepping
-         && (
-#if defined (USE_THREAD_DB) && defined (__SIGRTMIN)
-             (current_process ()->private->thread_db != NULL
-              && (WSTOPSIG (*wstat) == __SIGRTMIN
-                  || WSTOPSIG (*wstat) == __SIGRTMIN + 1))
-             ||
-#endif
-             (pass_signals[target_signal_from_host (WSTOPSIG (*wstat))]
-              && !(WSTOPSIG (*wstat) == SIGSTOP
-                   && event_child->stop_expected))))
-       {
-         siginfo_t info, *info_p;
-
-         if (debug_threads)
-           fprintf (stderr, "Ignored signal %d for LWP %ld.\n",
-                    WSTOPSIG (*wstat), lwpid_of (event_child));
-
-         if (ptrace (PTRACE_GETSIGINFO, lwpid_of (event_child), 0, &info) == 0)
-           info_p = &info;
-         else
-           info_p = NULL;
-         linux_resume_one_lwp (event_child, event_child->stepping,
-                               WSTOPSIG (*wstat), info_p);
-         continue;
-       }
-
       if (WIFSTOPPED (*wstat)
          && WSTOPSIG (*wstat) == SIGSTOP
          && event_child->stop_expected)
@@ -1764,18 +1727,53 @@ retry:
       trace_event = 0;
     }
 
-  /* We have all the data we need.  Either report the event to GDB, or
-     resume threads and keep waiting for more.  */
-
-  /* Check If GDB would be interested in this event.  If GDB wanted
-     this thread to single step, we always want to report the SIGTRAP,
-     and let GDB handle it.  Watchpoints should always be reported.
-     So should signals we can't explain.  A SIGTRAP we can't explain
-     could be a GDB breakpoint --- we may or not support Z0
-     breakpoints.  If we do, we're be able to handle GDB breakpoints
-     on top of internal breakpoints, by handling the internal
-     breakpoint and still reporting the event to GDB.  If we don't,
-     we're out of luck, GDB won't see the breakpoint hit.  */
+  /* Check whether GDB would be interested in this event.  */
+
+  /* If GDB is not interested in this signal, don't stop other
+     threads, and don't report it to GDB.  Just resume the inferior
+     right away.  We do this for threading-related signals as well as
+     any that GDB specifically requested we ignore.  But never ignore
+     SIGSTOP if we sent it ourselves, and do not ignore signals when
+     stepping - they may require special handling to skip the signal
+     handler.  */
+  /* FIXME drow/2002-06-09: Get signal numbers from the inferior's
+     thread library?  */
+  if (WIFSTOPPED (w)
+      && current_inferior->last_resume_kind != resume_step
+      && (
+#if defined (USE_THREAD_DB) && defined (__SIGRTMIN)
+         (current_process ()->private->thread_db != NULL
+          && (WSTOPSIG (w) == __SIGRTMIN
+              || WSTOPSIG (w) == __SIGRTMIN + 1))
+         ||
+#endif
+         (pass_signals[target_signal_from_host (WSTOPSIG (w))]
+          && !(WSTOPSIG (w) == SIGSTOP
+               && current_inferior->last_resume_kind == resume_stop))))
+    {
+      siginfo_t info, *info_p;
+
+      if (debug_threads)
+       fprintf (stderr, "Ignored signal %d for LWP %ld.\n",
+                WSTOPSIG (w), lwpid_of (event_child));
+
+      if (ptrace (PTRACE_GETSIGINFO, lwpid_of (event_child), 0, &info) == 0)
+       info_p = &info;
+      else
+       info_p = NULL;
+      linux_resume_one_lwp (event_child, event_child->stepping,
+                           WSTOPSIG (w), info_p);
+      goto retry;
+    }
+
+  /* If GDB wanted this thread to single step, we always want to
+     report the SIGTRAP, and let GDB handle it.  Watchpoints should
+     always be reported.  So should signals we can't explain.  A
+     SIGTRAP we can't explain could be a GDB breakpoint --- we may or
+     not support Z0 breakpoints.  If we do, we're be able to handle
+     GDB breakpoints on top of internal breakpoints, by handling the
+     internal breakpoint and still reporting the event to GDB.  If we
+     don't, we're out of luck, GDB won't see the breakpoint hit.  */
   report_to_gdb = (!maybe_internal_trap
                   || current_inferior->last_resume_kind == resume_step
                   || event_child->stopped_by_watchpoint