(TRAP_REMOVE_SYSCALL_FLAG): New macro.

	(linux_nat_wait_1): Mask off is-syscall bit in wait status for
	TRAP_IS_SYSCALL before passing value to caller.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3475828..0627150 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,6 +1,9 @@
 2009-09-28  Doug Evans  <dje@google.com>
 
        * linux-nat.c (status_to_str): Handle TRAP_IS_SYSCALL.
+       (TRAP_REMOVE_SYSCALL_FLAG): New macro.
+       (linux_nat_wait_1): Mask off is-syscall bit in wait status for
+       TRAP_IS_SYSCALL before passing value to caller.
 
 2009-09-28  Ulrich Weigand  <uweigand@de.ibm.com>
 

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 48affdb..9b8cf48 100644 (file)
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -70,6 +70,7 @@
 /* To be used when one needs to know wether a
    WSTOPSIG (status) is a syscall */
 #define TRAP_IS_SYSCALL (SIGTRAP | 0x80)
+#define TRAP_REMOVE_SYSCALL_FLAG(status) ((status) & ~(0x80 << 8))
 
 /* This comment documents high-level logic of this file. 
 
@@ -3012,6 +3013,12 @@ retry:
 
          lp = linux_nat_filter_event (lwpid, status, options);
 
+         /* If this was a syscall trap, we no longer need or want
+            the 0x80 flag, remove it.  */
+         if (WIFSTOPPED (status)
+             && WSTOPSIG (status) == TRAP_IS_SYSCALL)
+           status = TRAP_REMOVE_SYSCALL_FLAG (status);
+
          if (lp
              && ptid_is_pid (ptid)
              && ptid_get_pid (lp->ptid) != ptid_get_pid (ptid))