--- gcc/config/rs6000/xm-rs6000.h	2018/04/24 18:10:26	1.1.1.1
+++ gcc/config/rs6000/xm-rs6000.h	2018/04/24 18:30:31	1.1.1.3
@@ -1,6 +1,6 @@
 /* Configuration for GNU C-compiler for IBM RS/6000.
-   Copyright (C) 1990 Free Software Foundation, Inc.
-   Contributed by Richard Kenner (kenner@nyu.edu).
+   Copyright (C) 1990, 1993, 1995 Free Software Foundation, Inc.
+   Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu).
 
 This file is part of GNU CC.
 
@@ -16,7 +16,8 @@ GNU General Public License for more deta
 
 You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 
 /* #defines that need visibility everywhere.  */
@@ -38,18 +39,12 @@ the Free Software Foundation, 675 Mass A
 
 /* Arguments to use with `exit'.  */
 #define	SUCCESS_EXIT_CODE	0
-#define	FAILURE_EXIT_CODE	2
-#define	FATAL_EXIT_CODE		3
+#define	FATAL_EXIT_CODE		33
 
-/* If compiled with GNU C, use the built-in alloca.  */
-#ifdef __GNUC__
-#define alloca __builtin_alloca
-#else
-#define USE_C_ALLOCA
-#endif
-
-/* If not compiled with GNU C, use only int bitfields.  */
+/* If not compiled with GNU C, use the C alloca and use only int bitfields.  */
 #ifndef __GNUC__
+#define USE_C_ALLOCA
+extern char *alloca ();
 #define	ONLY_INT_FIELDS
 #endif
 
@@ -58,3 +53,9 @@ the Free Software Foundation, 675 Mass A
 
 /* Big buffers improve performance.  */
 #define IO_BUFFER_SIZE (0x8000 - 4096)
+
+#ifndef CROSS_COMPILE
+/* The AIX linker will discard static constructors in object files before
+   collect has a chance to see them, so scan the object files directly.  */
+#define COLLECT_EXPORT_LIST
+#endif