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