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From 0a4d0f222b48850a59769bc1d53327ea4c819e8b Mon Sep 17 00:00:00 2001
From: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 21 May 2011 22:49:41 +0000
Subject: [PATCH] * config/sparc/sparc.md (setjmp): Handle PIC mode and use the hard
frame pointer.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174014 138bc75d-0d04-0410-961f-82ee72b054a4
index 853bd2f..5e16179 100644
--- a/gcc/config/sparc/sparc.md
+++ b/gcc/config/sparc/sparc.md
@@ -6507,8 +6507,8 @@
(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")]
""
@@ -6547,19 +6547,26 @@
(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,
--
1.7.0.4
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