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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_X86_ASM_H
#define AVUTIL_X86_ASM_H
#include <stdint.h>
#include "config.h"
typedef struct xmm_reg { uint64_t a, b; } xmm_reg;
#if ARCH_X86_64
# define OPSIZE "q"
# define REG_a "rax"
# define REG_b "rbx"
# define REG_c "rcx"
# define REG_d "rdx"
# define REG_D "rdi"
# define REG_S "rsi"
# define PTR_SIZE "8"
typedef int64_t x86_reg;
# define REG_SP "rsp"
# define REG_BP "rbp"
# define REGBP rbp
# define REGa rax
# define REGb rbx
# define REGc rcx
# define REGd rdx
# define REGSP rsp
#elif ARCH_X86_32
# define OPSIZE "l"
# define REG_a "eax"
# define REG_b "ebx"
# define REG_c "ecx"
# define REG_d "edx"
# define REG_D "edi"
# define REG_S "esi"
# define PTR_SIZE "4"
typedef int32_t x86_reg;
# define REG_SP "esp"
# define REG_BP "ebp"
# define REGBP ebp
# define REGa eax
# define REGb ebx
# define REGc ecx
# define REGd edx
# define REGSP esp
#else
typedef int x86_reg;
#endif
#define HAVE_7REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE && HAVE_EBP_AVAILABLE))
#define HAVE_6REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE || HAVE_EBP_AVAILABLE))
#if ARCH_X86_64 && defined(PIC)
# define BROKEN_RELOCATIONS 1
#endif
/*
* If gcc is not set to support sse (-msse) it will not accept xmm registers
* in the clobber list for inline asm. XMM_CLOBBERS takes a list of xmm
* registers to be marked as clobbered and evaluates to nothing if they are
* not supported, or to the list itself if they are supported. Since a clobber
* list may not be empty, XMM_CLOBBERS_ONLY should be used if the xmm
* registers are the only in the clobber list.
* For example a list with "eax" and "xmm0" as clobbers should become:
* : XMM_CLOBBERS("xmm0",) "eax"
* and a list with only "xmm0" should become:
* XMM_CLOBBERS_ONLY("xmm0")
*/
#if HAVE_XMM_CLOBBERS
# define XMM_CLOBBERS(...) __VA_ARGS__
# define XMM_CLOBBERS_ONLY(...) : __VA_ARGS__
#else
# define XMM_CLOBBERS(...)
# define XMM_CLOBBERS_ONLY(...)
#endif
/* Use to export labels from asm. */
#define LABEL_MANGLE(a) EXTERN_PREFIX #a
// Use rip-relative addressing if compiling PIC code on x86-64.
#if ARCH_X86_64 && defined(PIC)
# define LOCAL_MANGLE(a) #a "(%%rip)"
#else
# define LOCAL_MANGLE(a) #a
#endif
#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
#endif /* AVUTIL_X86_ASM_H */
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