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| author |   etoh <etoh@openbsd.org> | 2003-02-21 08:15:37 +0000 |
|---|---|---|
| committer | etoh <etoh@openbsd.org> | 2003-02-21 08:15:37 +0000 |
| commit | 1d2b9248179deff002b97ff8ab90dea62b5cd21c (patch) | |
| tree | 18b2490684c3396112462391d9077fb85bf4bbf9 | |
| parent | sweep_string_in_operand: properly sweep inline function frame. (diff) | |
| download | wireguard-openbsd-1d2b9248179deff002b97ff8ab90dea62b5cd21c.tar.xz wireguard-openbsd-1d2b9248179deff002b97ff8ab90dea62b5cd21c.zip | |
push_frame_in_operand: add the setup and restore code for setjmp on powerpc and alpha
| -rw-r--r-- | gnu/egcs/gcc/protector.c | 55 |
1 files changed, 39 insertions, 16 deletions
diff --git a/gnu/egcs/gcc/protector.c b/gnu/egcs/gcc/protector.c index 8cbf25bda8d..17568326dad 100644 --- a/gnu/egcs/gcc/protector.c +++ b/gnu/egcs/gcc/protector.c @@ -2200,9 +2200,41 @@ push_frame_in_operand (insn, orig, push_size, boundary) return; case SET: - /* skip the insn that restores setjmp address */ - if (XEXP (x, 0) == frame_pointer_rtx) + /* + skip setjmp setup insn and setjmp restore insn + alpha case: + (set (MEM (reg:SI xx)) (frame_pointer_rtx))) + (set (frame_pointer_rtx) (REG)) + */ + if (GET_CODE (XEXP (x, 0)) == MEM + && XEXP (x, 1) == frame_pointer_rtx) return; + if (XEXP (x, 0) == frame_pointer_rtx + && GET_CODE (XEXP (x, 1)) == REG) + return; + + /* + powerpc case: restores setjmp address + (set (frame_pointer_rtx) (plus frame_pointer_rtx const_int -n)) + or + (set (reg) (plus frame_pointer_rtx const_int -n)) + (set (frame_pointer_rtx) (reg)) + */ + if (GET_CODE (XEXP (x, 0)) == REG + && GET_CODE (XEXP (x, 1)) == PLUS + && XEXP (XEXP (x, 1), 0) == frame_pointer_rtx + && CONSTANT_P (XEXP (XEXP (x, 1), 1)) + && INTVAL (XEXP (XEXP (x, 1), 1)) < 0) + { + x = XEXP (x, 1); + offset = AUTO_OFFSET(x); + if (x->used || abs (offset) < boundary) + return; + + XEXP (x, 1) = gen_rtx_CONST_INT (VOIDmode, offset - push_size); + x->used = 1; insn_pushed = TRUE; + return; + } /* reset fp_equiv register */ else if (GET_CODE (XEXP (x, 0)) == REG @@ -2235,15 +2267,10 @@ push_frame_in_operand (insn, orig, push_size, boundary) if (CONSTANT_P (XEXP (x, 1)) && XEXP (x, 0) == frame_pointer_rtx) { - if (x->used || abs (offset) < boundary) + if (x->used || offset < boundary) return; - if (offset > 0) - offset += push_size; - else - offset -= push_size; - - XEXP (x, 1) = gen_rtx_CONST_INT (VOIDmode, offset); + XEXP (x, 1) = gen_rtx_CONST_INT (VOIDmode, offset + push_size); x->used = 1; insn_pushed = TRUE; return; @@ -2280,15 +2307,11 @@ push_frame_in_operand (insn, orig, push_size, boundary) { HOST_WIDE_INT offset = INTVAL (SET_SRC (PATTERN (PREV_INSN (insn)))); - if (x->used || abs (offset) < boundary) + if (x->used || offset < boundary) return; - if (offset > 0) - offset += push_size; - else - offset -= push_size; - - SET_SRC (PATTERN (PREV_INSN (insn))) = gen_rtx_CONST_INT (VOIDmode, offset); + SET_SRC (PATTERN (PREV_INSN (insn))) + = gen_rtx_CONST_INT (VOIDmode, offset + push_size); x->used = 1; XEXP (x, 1)->used = 1; |