2003-09-29  Andrew Cagney  <cagney@redhat.com>

	* rs6000-tdep.c (rs6000_gdbarch_init): Set the PowerOpen red zone
	to 224, not 220.

Index: rs6000-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/rs6000-tdep.c,v
retrieving revision 1.145.2.2
diff -u -r1.145.2.2 rs6000-tdep.c
--- rs6000-tdep.c	18 Aug 2003 20:12:31 -0000	1.145.2.2
+++ rs6000-tdep.c	29 Sep 2003 19:56:54 -0000
@@ -2948,8 +2948,10 @@
     /* PPC64 SYSV.  */
     set_gdbarch_frame_red_zone_size (gdbarch, 288);
   else if (!sysv_abi && wordsize == 4)
-    /* PowerOpen / AIX 32 bit.  */
-    set_gdbarch_frame_red_zone_size (gdbarch, 220);
+    /* PowerOpen / AIX 32 bit.  The saved area or red zone, consists
+       19 4 byte GPRS + 18 8 byte FPRs giving a total of 220.  Problem
+       is, 220 isn't frame (16 byte) aligned.  Round it up to 224.  */
+    set_gdbarch_frame_red_zone_size (gdbarch, 224);
   set_gdbarch_deprecated_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
   set_gdbarch_deprecated_push_return_address (gdbarch, ppc_push_return_address);
   set_gdbarch_believe_pcc_promotion (gdbarch, 1);