1 /* 2 * This file is copied from FFmpeg. 3 * Source is libavutil/x86/asm.h from 21/08/2015 4 * 5 * MPlayer changes: 6 * - Prefix multiple inclusion protection with MP_ 7 */ 8 9 /* 10 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> 11 * 12 * This file is part of FFmpeg. 13 * 14 * FFmpeg is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU Lesser General Public 16 * License as published by the Free Software Foundation; either 17 * version 2.1 of the License, or (at your option) any later version. 18 * 19 * FFmpeg is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 * Lesser General Public License for more details. 23 * 24 * You should have received a copy of the GNU Lesser General Public 25 * License along with FFmpeg; if not, write to the Free Software 26 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 27 */ 28 29 #ifndef MP_AVUTIL_X86_ASM_H 30 #define MP_AVUTIL_X86_ASM_H 31 32 #include <stdint.h> 33 #include "config.h" 34 35 typedef struct xmm_reg { uint64_t a, b; } xmm_reg; 36 typedef struct ymm_reg { uint64_t a, b, c, d; } ymm_reg; 37 38 #if ARCH_X86_64 39 # define OPSIZE "q" 40 # define REG_a "rax" 41 # define REG_b "rbx" 42 # define REG_c "rcx" 43 # define REG_d "rdx" 44 # define REG_D "rdi" 45 # define REG_S "rsi" 46 # define PTR_SIZE "8" 47 typedef int64_t x86_reg; 48 49 /* REG_SP is defined in Solaris sys headers, so use REG_sp */ 50 # define REG_sp "rsp" 51 # define REG_BP "rbp" 52 # define REGBP rbp 53 # define REGa rax 54 # define REGb rbx 55 # define REGc rcx 56 # define REGd rdx 57 # define REGSP rsp 58 59 #elif ARCH_X86_32 60 61 # define OPSIZE "l" 62 # define REG_a "eax" 63 # define REG_b "ebx" 64 # define REG_c "ecx" 65 # define REG_d "edx" 66 # define REG_D "edi" 67 # define REG_S "esi" 68 # define PTR_SIZE "4" 69 typedef int32_t x86_reg; 70 71 # define REG_sp "esp" 72 # define REG_BP "ebp" 73 # define REGBP ebp 74 # define REGa eax 75 # define REGb ebx 76 # define REGc ecx 77 # define REGd edx 78 # define REGSP esp 79 #else 80 typedef int x86_reg; 81 #endif 82 83 #define HAVE_7REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE && HAVE_EBP_AVAILABLE)) 84 #define HAVE_6REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE || HAVE_EBP_AVAILABLE)) 85 86 #if ARCH_X86_64 && defined(PIC) 87 # define BROKEN_RELOCATIONS 1 88 #endif 89 90 /* 91 * If gcc is not set to support sse (-msse) it will not accept xmm registers 92 * in the clobber list for inline asm. XMM_CLOBBERS takes a list of xmm 93 * registers to be marked as clobbered and evaluates to nothing if they are 94 * not supported, or to the list itself if they are supported. Since a clobber 95 * list may not be empty, XMM_CLOBBERS_ONLY should be used if the xmm 96 * registers are the only in the clobber list. 97 * For example a list with "eax" and "xmm0" as clobbers should become: 98 * : XMM_CLOBBERS("xmm0",) "eax" 99 * and a list with only "xmm0" should become: 100 * XMM_CLOBBERS_ONLY("xmm0") 101 */ 102 #if HAVE_XMM_CLOBBERS 103 # define XMM_CLOBBERS(...) __VA_ARGS__ 104 # define XMM_CLOBBERS_ONLY(...) : __VA_ARGS__ 105 #else 106 # define XMM_CLOBBERS(...) 107 # define XMM_CLOBBERS_ONLY(...) 108 #endif 109 110 /* Use to export labels from asm. */ 111 #define LABEL_MANGLE(a) EXTERN_PREFIX #a 112 113 // Use rip-relative addressing if compiling PIC code on x86-64. 114 #if ARCH_X86_64 && defined(PIC) 115 # define LOCAL_MANGLE(a) #a "(%%rip)" 116 #else 117 # define LOCAL_MANGLE(a) #a 118 #endif 119 120 #if HAVE_INLINE_ASM_DIRECT_SYMBOL_REFS 121 # define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a) 122 # define NAMED_CONSTRAINTS_ADD(...) 123 # define NAMED_CONSTRAINTS(...) 124 # define NAMED_CONSTRAINTS_ARRAY_ADD(...) 125 # define NAMED_CONSTRAINTS_ARRAY(...) 126 #else 127 /* When direct symbol references are used in code passed to a compiler that does not support them 128 * then these references need to be converted to named asm constraints instead. 129 * Instead of returning a direct symbol MANGLE now returns a named constraint for that specific symbol. 130 * In order for this to work there must also be a corresponding entry in the asm-interface. To add this 131 * entry use the macro NAMED_CONSTRAINTS() and pass in a list of each symbol reference used in the 132 * corresponding block of code. (e.g. NAMED_CONSTRAINTS(var1,var2,var3) where var1 is the first symbol etc. ). 133 * If there are already existing constraints then use NAMED_CONSTRAINTS_ADD to add to the existing constraint list. 134 */ 135 # define MANGLE(a) "%["#a"]" 136 // Intel/MSVC does not correctly expand va-args so we need a rather ugly hack in order to get it to work 137 # define FE_0(P,X) P(X) 138 # define FE_1(P,X,X1) P(X), FE_0(P,X1) 139 # define FE_2(P,X,X1,X2) P(X), FE_1(P,X1,X2) 140 # define FE_3(P,X,X1,X2,X3) P(X), FE_2(P,X1,X2,X3) 141 # define FE_4(P,X,X1,X2,X3,X4) P(X), FE_3(P,X1,X2,X3,X4) 142 # define FE_5(P,X,X1,X2,X3,X4,X5) P(X), FE_4(P,X1,X2,X3,X4,X5) 143 # define FE_6(P,X,X1,X2,X3,X4,X5,X6) P(X), FE_5(P,X1,X2,X3,X4,X5,X6) 144 # define FE_7(P,X,X1,X2,X3,X4,X5,X6,X7) P(X), FE_6(P,X1,X2,X3,X4,X5,X6,X7) 145 # define FE_8(P,X,X1,X2,X3,X4,X5,X6,X7,X8) P(X), FE_7(P,X1,X2,X3,X4,X5,X6,X7,X8) 146 # define FE_9(P,X,X1,X2,X3,X4,X5,X6,X7,X8,X9) P(X), FE_8(P,X1,X2,X3,X4,X5,X6,X7,X8,X9) 147 # define GET_FE_IMPL(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,NAME,...) NAME 148 # define GET_FE(A) GET_FE_IMPL A 149 # define GET_FE_GLUE(x, y) x y 150 # define FOR_EACH_VA(P,...) GET_FE_GLUE(GET_FE((__VA_ARGS__,FE_9,FE_8,FE_7,FE_6,FE_5,FE_4,FE_3,FE_2,FE_1,FE_0)), (P,__VA_ARGS__)) 151 # define NAME_CONSTRAINT(x) [x] "m"(x) 152 // Parameters are a list of each symbol reference required 153 # define NAMED_CONSTRAINTS_ADD(...) , FOR_EACH_VA(NAME_CONSTRAINT,__VA_ARGS__) 154 // Same but without comma for when there are no previously defined constraints 155 # define NAMED_CONSTRAINTS(...) FOR_EACH_VA(NAME_CONSTRAINT,__VA_ARGS__) 156 // Same as above NAMED_CONSTRAINTS except used for passing arrays/pointers instead of normal variables 157 # define NAME_CONSTRAINT_ARRAY(x) [x] "m"(*x) 158 # define NAMED_CONSTRAINTS_ARRAY_ADD(...) , FOR_EACH_VA(NAME_CONSTRAINT_ARRAY,__VA_ARGS__) 159 # define NAMED_CONSTRAINTS_ARRAY(...) FOR_EACH_VA(NAME_CONSTRAINT_ARRAY,__VA_ARGS__) 160 #endif 161 162 #endif /* AVUTIL_X86_ASM_H */ 163