| 1 | ;***************************************************************************** |
| 2 | ;* cpu-a.asm: x86 cpu utilities |
| 3 | ;***************************************************************************** |
| 4 | ;* Copyright (C) 2003-2013 x264 project |
| 5 | ;* |
| 6 | ;* Authors: Laurent Aimar <fenrir@via.ecp.fr> |
| 7 | ;* Loren Merritt <lorenm@u.washington.edu> |
| 8 | ;* Fiona Glaser <fiona@x264.com> |
| 9 | ;* |
| 10 | ;* This program is free software; you can redistribute it and/or modify |
| 11 | ;* it under the terms of the GNU General Public License as published by |
| 12 | ;* the Free Software Foundation; either version 2 of the License, or |
| 13 | ;* (at your option) any later version. |
| 14 | ;* |
| 15 | ;* This program is distributed in the hope that it will be useful, |
| 16 | ;* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | ;* GNU General Public License for more details. |
| 19 | ;* |
| 20 | ;* You should have received a copy of the GNU General Public License |
| 21 | ;* along with this program; if not, write to the Free Software |
| 22 | ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 23 | ;* |
| 24 | ;* This program is also available under a commercial proprietary license. |
| 25 | ;* For more information, contact us at license @ x265.com. |
| 26 | ;***************************************************************************** |
| 27 | |
| 28 | %include "x86inc.asm" |
| 29 | |
| 30 | SECTION .text |
| 31 | |
| 32 | ;----------------------------------------------------------------------------- |
| 33 | ; void cpu_cpuid( int op, int *eax, int *ebx, int *ecx, int *edx ) |
| 34 | ;----------------------------------------------------------------------------- |
| 35 | cglobal cpu_cpuid, 5,7 |
| 36 | push rbx |
| 37 | push r4 |
| 38 | push r3 |
| 39 | push r2 |
| 40 | push r1 |
| 41 | mov eax, r0d |
| 42 | xor ecx, ecx |
| 43 | cpuid |
| 44 | pop r4 |
| 45 | mov [r4], eax |
| 46 | pop r4 |
| 47 | mov [r4], ebx |
| 48 | pop r4 |
| 49 | mov [r4], ecx |
| 50 | pop r4 |
| 51 | mov [r4], edx |
| 52 | pop rbx |
| 53 | RET |
| 54 | |
| 55 | ;----------------------------------------------------------------------------- |
| 56 | ; void cpu_xgetbv( int op, int *eax, int *edx ) |
| 57 | ;----------------------------------------------------------------------------- |
| 58 | cglobal cpu_xgetbv, 3,7 |
| 59 | push r2 |
| 60 | push r1 |
| 61 | mov ecx, r0d |
| 62 | xgetbv |
| 63 | pop r4 |
| 64 | mov [r4], eax |
| 65 | pop r4 |
| 66 | mov [r4], edx |
| 67 | RET |
| 68 | |
| 69 | %if ARCH_X86_64 |
| 70 | |
| 71 | ;----------------------------------------------------------------------------- |
| 72 | ; void stack_align( void (*func)(void*), void *arg ); |
| 73 | ;----------------------------------------------------------------------------- |
| 74 | cglobal stack_align |
| 75 | push rbp |
| 76 | mov rbp, rsp |
| 77 | %if WIN64 |
| 78 | sub rsp, 32 ; shadow space |
| 79 | %endif |
| 80 | and rsp, ~31 |
| 81 | mov rax, r0 |
| 82 | mov r0, r1 |
| 83 | mov r1, r2 |
| 84 | mov r2, r3 |
| 85 | call rax |
| 86 | leave |
| 87 | ret |
| 88 | |
| 89 | %else |
| 90 | |
| 91 | ;----------------------------------------------------------------------------- |
| 92 | ; int cpu_cpuid_test( void ) |
| 93 | ; return 0 if unsupported |
| 94 | ;----------------------------------------------------------------------------- |
| 95 | cglobal cpu_cpuid_test |
| 96 | pushfd |
| 97 | push ebx |
| 98 | push ebp |
| 99 | push esi |
| 100 | push edi |
| 101 | pushfd |
| 102 | pop eax |
| 103 | mov ebx, eax |
| 104 | xor eax, 0x200000 |
| 105 | push eax |
| 106 | popfd |
| 107 | pushfd |
| 108 | pop eax |
| 109 | xor eax, ebx |
| 110 | pop edi |
| 111 | pop esi |
| 112 | pop ebp |
| 113 | pop ebx |
| 114 | popfd |
| 115 | ret |
| 116 | |
| 117 | cglobal stack_align |
| 118 | push ebp |
| 119 | mov ebp, esp |
| 120 | sub esp, 12 |
| 121 | and esp, ~31 |
| 122 | mov ecx, [ebp+8] |
| 123 | mov edx, [ebp+12] |
| 124 | mov [esp], edx |
| 125 | mov edx, [ebp+16] |
| 126 | mov [esp+4], edx |
| 127 | mov edx, [ebp+20] |
| 128 | mov [esp+8], edx |
| 129 | call ecx |
| 130 | leave |
| 131 | ret |
| 132 | |
| 133 | %endif |
| 134 | |
| 135 | ;----------------------------------------------------------------------------- |
| 136 | ; void cpu_emms( void ) |
| 137 | ;----------------------------------------------------------------------------- |
| 138 | cglobal cpu_emms |
| 139 | emms |
| 140 | ret |
| 141 | |
| 142 | ;----------------------------------------------------------------------------- |
| 143 | ; void cpu_sfence( void ) |
| 144 | ;----------------------------------------------------------------------------- |
| 145 | cglobal cpu_sfence |
| 146 | sfence |
| 147 | ret |
| 148 | |
| 149 | cextern intel_cpu_indicator_init |
| 150 | |
| 151 | ;----------------------------------------------------------------------------- |
| 152 | ; void safe_intel_cpu_indicator_init( void ); |
| 153 | ;----------------------------------------------------------------------------- |
| 154 | cglobal safe_intel_cpu_indicator_init |
| 155 | push r0 |
| 156 | push r1 |
| 157 | push r2 |
| 158 | push r3 |
| 159 | push r4 |
| 160 | push r5 |
| 161 | push r6 |
| 162 | %if ARCH_X86_64 |
| 163 | push r7 |
| 164 | push r8 |
| 165 | push r9 |
| 166 | push r10 |
| 167 | push r11 |
| 168 | push r12 |
| 169 | push r13 |
| 170 | push r14 |
| 171 | %endif |
| 172 | push rbp |
| 173 | mov rbp, rsp |
| 174 | %if WIN64 |
| 175 | sub rsp, 32 ; shadow space |
| 176 | %endif |
| 177 | and rsp, ~31 |
| 178 | call intel_cpu_indicator_init |
| 179 | leave |
| 180 | %if ARCH_X86_64 |
| 181 | pop r14 |
| 182 | pop r13 |
| 183 | pop r12 |
| 184 | pop r11 |
| 185 | pop r10 |
| 186 | pop r9 |
| 187 | pop r8 |
| 188 | pop r7 |
| 189 | %endif |
| 190 | pop r6 |
| 191 | pop r5 |
| 192 | pop r4 |
| 193 | pop r3 |
| 194 | pop r2 |
| 195 | pop r1 |
| 196 | pop r0 |
| 197 | ret |