yading@11: /*
yading@11:  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVUTIL_X86_ASM_H
yading@11: #define AVUTIL_X86_ASM_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: #include "config.h"
yading@11: 
yading@11: typedef struct xmm_reg { uint64_t a, b; } xmm_reg;
yading@11: 
yading@11: #if ARCH_X86_64
yading@11: #    define OPSIZE "q"
yading@11: #    define REG_a "rax"
yading@11: #    define REG_b "rbx"
yading@11: #    define REG_c "rcx"
yading@11: #    define REG_d "rdx"
yading@11: #    define REG_D "rdi"
yading@11: #    define REG_S "rsi"
yading@11: #    define PTR_SIZE "8"
yading@11: typedef int64_t x86_reg;
yading@11: 
yading@11: #    define REG_SP "rsp"
yading@11: #    define REG_BP "rbp"
yading@11: #    define REGBP   rbp
yading@11: #    define REGa    rax
yading@11: #    define REGb    rbx
yading@11: #    define REGc    rcx
yading@11: #    define REGd    rdx
yading@11: #    define REGSP   rsp
yading@11: 
yading@11: #elif ARCH_X86_32
yading@11: 
yading@11: #    define OPSIZE "l"
yading@11: #    define REG_a "eax"
yading@11: #    define REG_b "ebx"
yading@11: #    define REG_c "ecx"
yading@11: #    define REG_d "edx"
yading@11: #    define REG_D "edi"
yading@11: #    define REG_S "esi"
yading@11: #    define PTR_SIZE "4"
yading@11: typedef int32_t x86_reg;
yading@11: 
yading@11: #    define REG_SP "esp"
yading@11: #    define REG_BP "ebp"
yading@11: #    define REGBP   ebp
yading@11: #    define REGa    eax
yading@11: #    define REGb    ebx
yading@11: #    define REGc    ecx
yading@11: #    define REGd    edx
yading@11: #    define REGSP   esp
yading@11: #else
yading@11: typedef int x86_reg;
yading@11: #endif
yading@11: 
yading@11: #define HAVE_7REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE && HAVE_EBP_AVAILABLE))
yading@11: #define HAVE_6REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE || HAVE_EBP_AVAILABLE))
yading@11: 
yading@11: #if ARCH_X86_64 && defined(PIC)
yading@11: #    define BROKEN_RELOCATIONS 1
yading@11: #endif
yading@11: 
yading@11: /*
yading@11:  * If gcc is not set to support sse (-msse) it will not accept xmm registers
yading@11:  * in the clobber list for inline asm. XMM_CLOBBERS takes a list of xmm
yading@11:  * registers to be marked as clobbered and evaluates to nothing if they are
yading@11:  * not supported, or to the list itself if they are supported. Since a clobber
yading@11:  * list may not be empty, XMM_CLOBBERS_ONLY should be used if the xmm
yading@11:  * registers are the only in the clobber list.
yading@11:  * For example a list with "eax" and "xmm0" as clobbers should become:
yading@11:  * : XMM_CLOBBERS("xmm0",) "eax"
yading@11:  * and a list with only "xmm0" should become:
yading@11:  * XMM_CLOBBERS_ONLY("xmm0")
yading@11:  */
yading@11: #if HAVE_XMM_CLOBBERS
yading@11: #    define XMM_CLOBBERS(...)        __VA_ARGS__
yading@11: #    define XMM_CLOBBERS_ONLY(...) : __VA_ARGS__
yading@11: #else
yading@11: #    define XMM_CLOBBERS(...)
yading@11: #    define XMM_CLOBBERS_ONLY(...)
yading@11: #endif
yading@11: 
yading@11: /* Use to export labels from asm. */
yading@11: #define LABEL_MANGLE(a) EXTERN_PREFIX #a
yading@11: 
yading@11: // Use rip-relative addressing if compiling PIC code on x86-64.
yading@11: #if ARCH_X86_64 && defined(PIC)
yading@11: #    define LOCAL_MANGLE(a) #a "(%%rip)"
yading@11: #else
yading@11: #    define LOCAL_MANGLE(a) #a
yading@11: #endif
yading@11: 
yading@11: #define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
yading@11: 
yading@11: #endif /* AVUTIL_X86_ASM_H */