From: Eric Botcazou <ebotcazou@adacore.com>
Date: Sat, 21 May 2011 22:51:00 +0000 (+0000)
Subject: sparc.md (setjmp): Handle PIC mode and use the hard frame pointer.
X-Git-Tag: releases/gcc-4.4.7~393
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bc6441b580640a57198bb83dc50e84ebaebdc96a;p=thirdparty%2Fgcc.git

sparc.md (setjmp): Handle PIC mode and use the hard frame pointer.

	* config/sparc/sparc.md (setjmp): Handle PIC mode and use the hard
	frame pointer.

From-SVN: r174016
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f5651f79e627..e682781eb696 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-05-21  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* config/sparc/sparc.md (setjmp): Handle PIC mode and use the hard
+	frame pointer.
+
 2011-05-21  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* config/sparc/sparc.c (eligible_for_return_delay): Do not return
diff --git a/gcc/config/sparc/sparc.md b/gcc/config/sparc/sparc.md
index e5098a5592d6..d7008d750af3 100644
--- a/gcc/config/sparc/sparc.md
+++ b/gcc/config/sparc/sparc.md
@@ -7068,8 +7068,8 @@
 		      (const_int 4)))])
 
 ;; For __builtin_setjmp we need to flush register windows iff the function
-;; calls alloca as well, because otherwise the register window might be
-;; saved after %sp adjustment and thus setjmp would crash
+;; calls alloca as well, because otherwise the current register window might
+;; be saved after the %sp adjustment and thus setjmp would crash.
 (define_expand "builtin_setjmp_setup"
   [(match_operand 0 "register_operand" "r")]
   ""
@@ -7108,19 +7108,26 @@
                (eq_attr "pic" "true")
                  (const_int 4)] (const_int 3)))])
 
-;; Pattern for use after a setjmp to store FP and the return register
-;; into the stack area.
+;; Pattern for use after a setjmp to store registers into the save area.
 
 (define_expand "setjmp"
   [(const_int 0)]
   ""
 {
   rtx mem;
-  
+
+  if (flag_pic)
+    {
+      mem = gen_rtx_MEM (Pmode,
+			 plus_constant (stack_pointer_rtx,
+					SPARC_STACK_BIAS + 7 * UNITS_PER_WORD));
+      emit_insn (gen_rtx_SET (VOIDmode, mem, pic_offset_table_rtx));
+    }
+
   mem = gen_rtx_MEM (Pmode,
 		     plus_constant (stack_pointer_rtx,
 				    SPARC_STACK_BIAS + 14 * UNITS_PER_WORD));
-  emit_insn (gen_rtx_SET (VOIDmode, mem, frame_pointer_rtx));
+  emit_insn (gen_rtx_SET (VOIDmode, mem, hard_frame_pointer_rtx));
 
   mem = gen_rtx_MEM (Pmode,
 		     plus_constant (stack_pointer_rtx,