Initial check-in of gcc 4.7.2.

Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365

1 files changed, 56 insertions, 0 deletions

diff --git a/gcc-4.7/gcc/ada/sigtramp.h b/gcc-4.7/gcc/ada/sigtramp.h
new file mode 100644
index 000000000..ef93e3f6d
--- /dev/null
+++ b/gcc-4.7/gcc/ada/sigtramp.h
@@ -0,0 +1,56 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                             S I G T R A M P                              *
+ *                                                                          *
+ *                              C Header File                               *
+ *                                                                          *
+ *            Copyright (C) 2011, Free Software Foundation, Inc.            *
+ *                                                                          *
+ * GNAT is free software;  you can  redistribute it  and/or modify it under *
+ * terms of the  GNU General Public License as published  by the Free Soft- *
+ * ware  Foundation;  either version 3,  or (at your option) any later ver- *
+ * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
+ * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
+ *                                                                          *
+ * As a special exception under Section 7 of GPL version 3, you are granted *
+ * additional permissions described in the GCC Runtime Library Exception,   *
+ * version 3.1, as published by the Free Software Foundation.               *
+ *                                                                          *
+ * You should have received a copy of the GNU General Public License and    *
+ * a copy of the GCC Runtime Library Exception along with this program;     *
+ * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
+ * <http://www.gnu.org/licenses/>.                                          *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+/* On targets where this is implemented, we resort to a signal handler
+   trampoline to set-up the DWARF Call Frame Information that let unwinders
+   walk through the signal frame up into the interrupted application code.
+   This file introduces the relevant declarations.  */
+
+/* This file should only be #included on targets that do implement the
+   trampoline, which needs to expose the following interface:  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  typedef void sighandler_t (int signo, void *siginfo, void *sigcontext);
+
+  void __gnat_sigtramp  (int signo, void *siginfo, void *sigcontext,
+			 sighandler_t * handler);
+
+  /* To be called from an established signal handler.  Setup the DWARF CFI
+     bits letting unwinders walk through the signal frame up into the
+     interrupted application code, and then call HANDLER (SIGNO, SIGINFO,
+     SIGCONTEXT).  */
+
+#ifdef __cplusplus
+}
+#endif