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win64: fix JIT SSE-based FP

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XMM6-15 are preserved in the Win64 ABI
This commit is contained in:
Matthew Flatt 2011-12-21 11:24:59 -07:00 committed by Matthew Flatt
parent 58b111485f
commit 24991f0c1a
1 changed files with 13 additions and 7 deletions
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20
src/racket/src/lightning/i386/fp-sse.h
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@ -35,15 +35,21 @@
#ifndef __lightning_fp_sse_h
#define __lightning_fp_sse_h
#define JIT_FPR_NUM 6
#ifdef _WIN64
/* Win64 ABI has only 6 volatile XMM registers, and we need to
use one register as scratch: */
# define JIT_FPR_NUM 5
#else
# define JIT_FPR_NUM 6
#endif
#define _XMM0 0x60
#ifdef JIT_X86_64
# define JIT_FPR(i) (_XMM0 + 8 + (i))
#else
# define JIT_FPR(i) (_XMM0 + (i))
#endif
#define JIT_FPTMP0 JIT_FPR(6)
/* It night be better to avoid the first 8 registers for
non-Win64 x86_64 mode, since those registers can be
used for arguments in C function calls. Racket doesn't
use FP arguments for C calls, though. */
#define JIT_FPR(i) (_XMM0 + (i))
#define JIT_FPTMP0 JIT_FPR(JIT_FPR_NUM)
#define jit_addr_d(f0, f1, f2) \
((f0 == f1) \