* configure.host: Recognize aix4 explicitly.

* rs6000-core.c (CORE_DATA_SIZE_FIELD): New macro to get a the size
        of a core dump's data section.  Provide alternate definition for aix4.
        (SAVE_FIELD): Similarly for save state field (register info).
        (STACK_END_ADDR): Provide definition suitable for aix4.
        * config/{aix4.mh,aix4.mt}: New configuration files.
        * hosts/aix4.h: Likewise.

Mike's aix4 changes, slightly modified.

bfd/ChangeLog

@@ -1,3 +1,13 @@
+Tue Aug  8 10:15:43 1995  Jeffrey A. Law  <law@rtl.cygnus.com>
+
+	* configure.host: Recognize aix4 explicitly.
+	* rs6000-core.c (CORE_DATA_SIZE_FIELD): New macro to get a the size
+	of a core dump's data section.  Provide alternate definition for aix4.
+	(SAVE_FIELD): Similarly for save state field (register info).
+	(STACK_END_ADDR): Provide definition suitable for aix4.
+	* config/{aix4.mh,aix4.mt}: New configuration files.
+	* hosts/aix4.h: Likewise.
+
 Mon Aug  7 23:03:21 1995  Ian Lance Taylor  <ian@cygnus.com>
 
 	* som.c (som_bfd_copy_private_symbol_data): Cast initializations

bfd/hosts/.Sanitize

@@ -24,6 +24,7 @@ Do-first:
 
 Things-to-keep:
 
+aix4.h
 alphaosf.h
 apollo68.h
 apollov68.h

bfd/hosts/aix4.h

@@ -0,0 +1,23 @@
+/* This file is *really* for an Power, PowerPC running AIX 4... */
+
+#include <stddef.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/file.h>
+#include <stdlib.h>		/* for malloc() */
+
+/* Defining this variable turns on AIX core file and archive support.  */
+#define HOST_AIX
+
+#ifndef	O_ACCMODE
+#define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
+#endif
+#define SEEK_SET 0
+#define SEEK_CUR 1
+
+#include "fopen-same.h"