* config/ia64/unwind-ia64.c (ia64_copy_rbs): New function.

	(unw_access_gr): Only call ia64_rse_rnat_addr if addr is above
	regstk_top.
	(uw_frame_state_for): Handle locations inside bundles.
	(uw_init_context_1): Initialize context->rnat.
	Set context->regstk_top to lowest rbs address which has nat collection
	in context->rnat.
	(uw_install_context): Fix rnat restoring.
	Restore ar.rsc to previous state.
	* config/ia64/linux.h (MD_FALLBACK_FRAME_STATE_FOR,
	MD_HANDLE_UNWABI): Handle unwinding through SA_ONSTACK frames.

	* gcc.dg/cleanup-10.c: New test.
	* gcc.dg/cleanup-11.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74835 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 114 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/cleanup-10.c b/gcc/testsuite/gcc.dg/cleanup-10.c
new file mode 100644
index 00000000000..39923fdde15
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cleanup-10.c
@@ -0,0 +1,114 @@
+/* { dg-do run { target i?86-*-linux* x86_64-*-linux* ia64-*-linux* alpha*-*-linux* powerpc*-*-linux* s390*-*-linux* sparc*-*-linux* mips*-*-linux* } } */
+/* { dg-options "-fasynchronous-unwind-tables -fexceptions -O2" } */
+/* Verify that cleanups work with exception handling through signal frames
+   on alternate stack.  */
+
+#include <unwind.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+
+static _Unwind_Reason_Code
+force_unwind_stop (int version, _Unwind_Action actions,
+                   _Unwind_Exception_Class exc_class,
+                   struct _Unwind_Exception *exc_obj,
+                   struct _Unwind_Context *context,
+                   void *stop_parameter)
+{
+  if (actions & _UA_END_OF_STACK)
+    abort ();
+  return _URC_NO_REASON;
+}
+
+static void force_unwind ()
+{
+  struct _Unwind_Exception *exc = malloc (sizeof (*exc));
+  exc->exception_class = 0;
+  exc->exception_cleanup = 0;
+                   
+#ifndef __USING_SJLJ_EXCEPTIONS__
+  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
+#else
+  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
+#endif
+                   
+  abort ();
+}
+
+int count;
+char *null;
+
+static void counter (void *p __attribute__((unused)))
+{
+  ++count;
+}
+
+static void handler (void *p __attribute__((unused)))
+{
+  if (count != 2)
+    abort ();
+  exit (0);
+}
+
+static int __attribute__((noinline)) fn5 ()
+{
+  char dummy __attribute__((cleanup (counter)));
+  force_unwind ();
+  return 0;
+}
+
+static void fn4 (int sig, siginfo_t *info, void *ctx)
+{
+  char dummy __attribute__((cleanup (counter)));
+  fn5 ();
+  null = NULL;
+}
+
+static void fn3 ()
+{
+  abort ();
+}
+
+static int __attribute__((noinline)) fn2 ()
+{
+  *null = 0;
+  fn3 ();
+  return 0;
+}
+
+static int __attribute__((noinline)) fn1 ()
+{
+  stack_t ss;
+  struct sigaction s;
+
+  ss.ss_size = 4 * sysconf (_SC_PAGESIZE);
+  if (ss.ss_size < SIGSTKSZ)
+    ss.ss_size = SIGSTKSZ;
+  ss.ss_sp = malloc (ss.ss_size);
+  if (ss.ss_sp == NULL)
+    exit (1);
+  ss.ss_flags = 0;
+  if (sigaltstack (&ss, NULL) < 0)
+    exit (1);
+
+  sigemptyset (&s.sa_mask);
+  s.sa_sigaction = fn4;
+  s.sa_flags = SA_ONESHOT | SA_ONSTACK;
+  sigaction (SIGSEGV, &s, NULL);
+  fn2 ();
+  return 0;
+}
+
+static int __attribute__((noinline)) fn0 ()
+{
+  char dummy __attribute__((cleanup (handler)));
+  fn1 ();
+  null = 0;
+  return 0;
+}
+
+int main()
+{ 
+  fn0 ();
+  abort ();
+}