Use __builtin_trap for ABORT_INSTRUCTION.

1 files changed, 30 insertions, 1 deletions

diff --git a/sysdeps/generic/abort-instr.h b/sysdeps/generic/abort-instr.h
index 106a330..4ac11d2 100644
--- a/sysdeps/generic/abort-instr.h
+++ b/sysdeps/generic/abort-instr.h
@@ -1,2 +1,31 @@
+/* Magic instruction to crash quickly and reliably.  Generic/stub version.
+   Copyright (C) 2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _ABORT_INSTR_H
+#define _ABORT_INSTR_H  1
+
+/* If the compiler provides the generic way to generate the right
+   instruction, we can use that without any machine-specific knowledge.  */
+#if HAVE_BUILTIN_TRAP
+# define ABORT_INSTRUCTION      __builtin_trap ()
+#else
 /* We cannot give any generic instruction to crash the program.
-   abort() will have to make sure it never returns.  */
+   abort will have to make sure it never returns.  */
+#endif
+
+#endif  /* abort-instr.h */