5980be9b3c
This work is based in part on code from NetBSD libm, libc and kernel. The library is partly public domain and partly BSD-style licensed.
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* $NetBSD: abi.h,v 1.7 2011/06/18 22:19:52 joerg Exp $ */
|
|
|
|
/*
|
|
* Written by Frank van der Linden (fvdl@wasabisystems.com)
|
|
*/
|
|
|
|
/*
|
|
* The x86-64 ABI specifies that float and double arguments
|
|
* are passed in SSE2 (xmm) registers. Unfortunately,
|
|
* there is no way to push those on to the FP stack, which is
|
|
* where the fancier instructions get their arguments from.
|
|
*
|
|
* Define some prologues and epilogues to store and retrieve
|
|
* xmm regs to local variables.
|
|
*/
|
|
|
|
#ifdef __x86_64__
|
|
|
|
#define ARG_LONG_DOUBLE_ONE 8(%rsp)
|
|
#define ARG_LONG_DOUBLE_TWO 24(%rsp)
|
|
#define ARG_DOUBLE_ONE -8(%rsp)
|
|
#define ARG_DOUBLE_ONE_LSW -8(%rsp)
|
|
#define ARG_DOUBLE_ONE_MSW -4(%rsp)
|
|
#define ARG_DOUBLE_TWO -16(%rsp)
|
|
#define ARG_FLOAT_ONE -4(%rsp)
|
|
#define ARG_FLOAT_TWO -8(%rsp)
|
|
|
|
#define XMM_ONE_ARG_DOUBLE_PROLOGUE \
|
|
movsd %xmm0, ARG_DOUBLE_ONE
|
|
|
|
#define XMM_TWO_ARG_DOUBLE_PROLOGUE \
|
|
movsd %xmm0, ARG_DOUBLE_ONE ; \
|
|
movsd %xmm1, ARG_DOUBLE_TWO
|
|
|
|
#define XMM_ONE_ARG_FLOAT_PROLOGUE \
|
|
movss %xmm0, ARG_FLOAT_ONE
|
|
|
|
#define XMM_TWO_ARG_FLOAT_PROLOGUE \
|
|
movss %xmm0, ARG_FLOAT_ONE ; \
|
|
movss %xmm1, ARG_FLOAT_TWO
|
|
|
|
#define XMM_DOUBLE_EPILOGUE \
|
|
fstpl ARG_DOUBLE_ONE ; \
|
|
movsd ARG_DOUBLE_ONE, %xmm0
|
|
|
|
#define XMM_FLOAT_EPILOGUE \
|
|
fstps ARG_FLOAT_ONE ; \
|
|
movss ARG_FLOAT_ONE, %xmm0
|
|
|
|
#define FLDL_VAR(x) fldl x(%rip)
|
|
|
|
#else
|
|
|
|
#define ARG_LONG_DOUBLE_ONE 4(%esp)
|
|
#define ARG_LONG_DOUBLE_TWO 16(%esp)
|
|
#define ARG_DOUBLE_ONE 4(%esp)
|
|
#define ARG_DOUBLE_ONE_LSW 4(%esp)
|
|
#define ARG_DOUBLE_ONE_MSW 8(%esp)
|
|
#define ARG_DOUBLE_TWO 12(%esp)
|
|
#define ARG_FLOAT_ONE 4(%esp)
|
|
#define ARG_FLOAT_TWO 8(%esp)
|
|
|
|
#define XMM_ONE_ARG_DOUBLE_PROLOGUE
|
|
#define XMM_TWO_ARG_DOUBLE_PROLOGUE
|
|
#define XMM_ONE_ARG_FLOAT_PROLOGUE
|
|
#define XMM_TWO_ARG_FLOAT_PROLOGUE
|
|
|
|
#define XMM_DOUBLE_EPILOGUE
|
|
#define XMM_FLOAT_EPILOGUE
|
|
|
|
#ifdef PIC
|
|
#define FLDL_VAR(x) \
|
|
PIC_PROLOGUE ; \
|
|
fldl PIC_GOTOFF(x) ; \
|
|
PIC_EPILOGUE
|
|
#else
|
|
#define FLDL_VAR(x) \
|
|
fldl x
|
|
|
|
#endif
|
|
#endif
|