| 1 | /** @file
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| 2 | * IPRT - AMD64 and x86 Specific Assembly Functions, 32-bit Watcom C pragma aux.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2016 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef ___iprt_asm_amd64_x86_h
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| 27 | # error "Don't include this header directly."
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| 28 | #endif
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| 29 | #ifndef ___iprt_asm_amd64_x86_watcom_32_h
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| 30 | #define ___iprt_asm_amd64_x86_watcom_32_h
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| 31 |
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| 32 | #ifndef __FLAT__
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| 33 | # error "Only works with flat pointers! (-mf)"
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| 34 | #endif
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| 35 |
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| 36 | /*
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| 37 | * Note! The #undef that preceds the #pragma aux statements is for undoing
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| 38 | * the mangling, because the symbol in #pragma aux [symbol] statements
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| 39 | * doesn't get subjected to preprocessing. This is also why we include
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| 40 | * the watcom header at the top rather than at the bottom of the
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| 41 | * asm-amd64-x86.h file.
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| 42 | */
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| 43 |
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| 44 | #undef ASMGetIDTR
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| 45 | #pragma aux ASMGetIDTR = \
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| 46 | "sidt fword ptr [ecx]" \
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| 47 | parm [ecx] \
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| 48 | modify exact [];
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| 49 |
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| 50 | #undef ASMGetIdtrLimit
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| 51 | #pragma aux ASMGetIdtrLimit = \
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| 52 | "sub esp, 8" \
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| 53 | "sidt fword ptr [esp]" \
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| 54 | "mov cx, [esp]" \
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| 55 | "add esp, 8" \
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| 56 | parm [] \
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| 57 | value [cx] \
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| 58 | modify exact [ecx];
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| 59 |
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| 60 | #undef ASMSetIDTR
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| 61 | #pragma aux ASMSetIDTR = \
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| 62 | "lidt fword ptr [ecx]" \
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| 63 | parm [ecx] nomemory \
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| 64 | modify nomemory;
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| 65 |
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| 66 | #undef ASMGetGDTR
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| 67 | #pragma aux ASMGetGDTR = \
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| 68 | "sgdt fword ptr [ecx]" \
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| 69 | parm [ecx] \
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| 70 | modify exact [];
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| 71 |
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| 72 | #undef ASMSetGDTR
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| 73 | #pragma aux ASMSetGDTR = \
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| 74 | "lgdt fword ptr [ecx]" \
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| 75 | parm [ecx] nomemory \
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| 76 | modify exact [] nomemory;
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| 77 |
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| 78 | #undef ASMGetCS
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| 79 | #pragma aux ASMGetCS = \
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| 80 | "mov ax, cs" \
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| 81 | parm [] nomemory \
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| 82 | value [ax] \
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| 83 | modify exact [eax] nomemory;
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| 84 |
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| 85 | #undef ASMGetDS
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| 86 | #pragma aux ASMGetDS = \
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| 87 | "mov ax, ds" \
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| 88 | parm [] nomemory \
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| 89 | value [ax] \
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| 90 | modify exact [eax] nomemory;
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| 91 |
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| 92 | #undef ASMGetES
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| 93 | #pragma aux ASMGetES = \
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| 94 | "mov ax, es" \
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| 95 | parm [] nomemory \
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| 96 | value [ax] \
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| 97 | modify exact [eax] nomemory;
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| 98 |
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| 99 | #undef ASMGetFS
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| 100 | #pragma aux ASMGetFS = \
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| 101 | "mov ax, fs" \
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| 102 | parm [] nomemory \
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| 103 | value [ax] \
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| 104 | modify exact [eax] nomemory;
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| 105 |
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| 106 | #undef ASMGetGS
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| 107 | #pragma aux ASMGetGS = \
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| 108 | "mov ax, gs" \
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| 109 | parm [] nomemory \
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| 110 | value [ax] \
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| 111 | modify exact [eax] nomemory;
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| 112 |
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| 113 | #undef ASMGetSS
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| 114 | #pragma aux ASMGetSS = \
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| 115 | "mov ax, ss" \
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| 116 | parm [] nomemory \
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| 117 | value [ax] \
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| 118 | modify exact [eax] nomemory;
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| 119 |
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| 120 | #undef ASMGetTR
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| 121 | #pragma aux ASMGetTR = \
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| 122 | "str ax" \
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| 123 | parm [] nomemory \
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| 124 | value [ax] \
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| 125 | modify exact [eax] nomemory;
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| 126 |
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| 127 | #undef ASMGetLDTR
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| 128 | #pragma aux ASMGetLDTR = \
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| 129 | "sldt ax" \
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| 130 | parm [] nomemory \
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| 131 | value [ax] \
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| 132 | modify exact [eax] nomemory;
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| 133 |
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| 134 | /** @todo ASMGetSegAttr */
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| 135 |
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| 136 | #undef ASMGetFlags
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| 137 | #pragma aux ASMGetFlags = \
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| 138 | "pushfd" \
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| 139 | "pop eax" \
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| 140 | parm [] nomemory \
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| 141 | value [eax] \
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| 142 | modify exact [eax] nomemory;
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| 143 |
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| 144 | #undef ASMSetFlags
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| 145 | #pragma aux ASMSetFlags = \
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| 146 | "push eax" \
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| 147 | "popfd" \
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| 148 | parm [eax] nomemory \
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| 149 | modify exact [] nomemory;
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| 150 |
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| 151 | #undef ASMChangeFlags
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| 152 | #pragma aux ASMChangeFlags = \
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| 153 | "pushfd" \
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| 154 | "pop eax" \
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| 155 | "and edx, eax" \
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| 156 | "or edx, ecx" \
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| 157 | "push edx" \
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| 158 | "popfd" \
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| 159 | parm [edx] [ecx] nomemory \
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| 160 | value [eax] \
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| 161 | modify exact [edx] nomemory;
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| 162 |
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| 163 | #undef ASMAddFlags
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| 164 | #pragma aux ASMAddFlags = \
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| 165 | "pushfd" \
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| 166 | "pop eax" \
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| 167 | "or edx, eax" \
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| 168 | "push edx" \
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| 169 | "popfd" \
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| 170 | parm [edx] nomemory \
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| 171 | value [eax] \
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| 172 | modify exact [edx] nomemory;
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| 173 |
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| 174 | #undef ASMClearFlags
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| 175 | #pragma aux ASMClearFlags = \
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| 176 | "pushfd" \
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| 177 | "pop eax" \
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| 178 | "and edx, eax" \
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| 179 | "push edx" \
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| 180 | "popfd" \
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| 181 | parm [edx] nomemory \
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| 182 | value [eax] \
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| 183 | modify exact [edx] nomemory;
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| 184 |
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| 185 | /* Note! Must use the 64-bit integer return value convension.
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| 186 | The order of registers in the value [set] does not seem to mean anything. */
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| 187 | #undef ASMReadTSC
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| 188 | #pragma aux ASMReadTSC = \
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| 189 | ".586" \
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| 190 | "rdtsc" \
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| 191 | parm [] nomemory \
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| 192 | value [eax edx] \
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| 193 | modify exact [edx eax] nomemory;
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| 194 |
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| 195 | #undef ASMReadTscWithAux
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| 196 | #pragma aux ASMReadTscWithAux = \
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| 197 | 0x0f 0x01 0xf9 \
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| 198 | "mov [ebx], ecx" \
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| 199 | parm [ebx] \
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| 200 | value [eax edx] \
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| 201 | modify exact [eax edx ecx];
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| 202 |
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| 203 | /* ASMCpuId: Implemented externally, too many parameters. */
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| 204 | /* ASMCpuId_Idx_ECX: Implemented externally, too many parameters. */
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| 205 | /* ASMCpuIdExSlow: Always implemented externally. */
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| 206 |
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| 207 | #undef ASMCpuId_ECX_EDX
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| 208 | #pragma aux ASMCpuId_ECX_EDX = \
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| 209 | "cpuid" \
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| 210 | "mov [edi], ecx" \
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| 211 | "mov [esi], edx" \
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| 212 | parm [eax] [edi] [esi] \
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| 213 | modify exact [eax ebx ecx edx];
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| 214 |
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| 215 | #undef ASMCpuId_EAX
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| 216 | #pragma aux ASMCpuId_EAX = \
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| 217 | "cpuid" \
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| 218 | parm [eax] \
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| 219 | value [eax] \
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| 220 | modify exact [eax ebx ecx edx];
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| 221 |
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| 222 | #undef ASMCpuId_EBX
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| 223 | #pragma aux ASMCpuId_EBX = \
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| 224 | "cpuid" \
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| 225 | parm [eax] \
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| 226 | value [ebx] \
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| 227 | modify exact [eax ebx ecx edx];
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| 228 |
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| 229 | #undef ASMCpuId_ECX
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| 230 | #pragma aux ASMCpuId_ECX = \
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| 231 | "cpuid" \
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| 232 | parm [eax] \
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| 233 | value [ecx] \
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| 234 | modify exact [eax ebx ecx edx];
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| 235 |
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| 236 | #undef ASMCpuId_EDX
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| 237 | #pragma aux ASMCpuId_EDX = \
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| 238 | "cpuid" \
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| 239 | parm [eax] \
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| 240 | value [edx] \
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| 241 | modify exact [eax ebx ecx edx];
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| 242 |
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| 243 | /* ASMHasCpuId: MSC inline in main source file. */
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| 244 | /* ASMGetApicId: Implemented externally, lazy bird. */
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| 245 |
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| 246 | #undef ASMGetCR0
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| 247 | #pragma aux ASMGetCR0 = \
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| 248 | "mov eax, cr0" \
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| 249 | parm [] nomemory \
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| 250 | value [eax] \
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| 251 | modify exact [eax] nomemory;
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| 252 |
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| 253 | #undef ASMSetCR0
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| 254 | #pragma aux ASMSetCR0 = \
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| 255 | "mov cr0, eax" \
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| 256 | parm [eax] nomemory \
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| 257 | modify exact [] nomemory;
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| 258 |
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| 259 | #undef ASMGetCR2
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| 260 | #pragma aux ASMGetCR2 = \
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| 261 | "mov eax, cr2" \
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| 262 | parm [] nomemory \
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| 263 | value [eax] \
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| 264 | modify exact [eax] nomemory;
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| 265 |
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| 266 | #undef ASMSetCR2
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| 267 | #pragma aux ASMSetCR2 = \
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| 268 | "mov cr2, eax" \
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| 269 | parm [eax] nomemory \
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| 270 | modify exact [] nomemory;
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| 271 |
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| 272 | #undef ASMGetCR3
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| 273 | #pragma aux ASMGetCR3 = \
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| 274 | "mov eax, cr3" \
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| 275 | parm [] nomemory \
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| 276 | value [eax] \
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| 277 | modify exact [eax] nomemory;
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| 278 |
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| 279 | #undef ASMSetCR3
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| 280 | #pragma aux ASMSetCR3 = \
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| 281 | "mov cr3, eax" \
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| 282 | parm [eax] nomemory \
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| 283 | modify exact [] nomemory;
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| 284 |
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| 285 | #undef ASMReloadCR3
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| 286 | #pragma aux ASMReloadCR3 = \
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| 287 | "mov eax, cr3" \
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| 288 | "mov cr3, eax" \
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| 289 | parm [] nomemory \
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| 290 | modify exact [eax] nomemory;
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| 291 |
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| 292 | #undef ASMGetCR4
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| 293 | #pragma aux ASMGetCR4 = \
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| 294 | "mov eax, cr4" \
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| 295 | parm [] nomemory \
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| 296 | value [eax] \
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| 297 | modify exact [eax] nomemory;
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| 298 |
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| 299 | #undef ASMSetCR4
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| 300 | #pragma aux ASMSetCR4 = \
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| 301 | "mov cr4, eax" \
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| 302 | parm [eax] nomemory \
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| 303 | modify exact [] nomemory;
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| 304 |
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| 305 | /* ASMGetCR8: Don't bother for 32-bit. */
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| 306 | /* ASMSetCR8: Don't bother for 32-bit. */
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| 307 |
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| 308 | #undef ASMIntEnable
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| 309 | #pragma aux ASMIntEnable = \
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| 310 | "sti" \
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| 311 | parm [] nomemory \
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| 312 | modify exact [] nomemory;
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| 313 |
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| 314 | #undef ASMIntDisable
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| 315 | #pragma aux ASMIntDisable = \
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| 316 | "cli" \
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| 317 | parm [] nomemory \
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| 318 | modify exact [] nomemory;
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| 319 |
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| 320 | #undef ASMIntDisableFlags
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| 321 | #pragma aux ASMIntDisableFlags = \
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| 322 | "pushfd" \
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| 323 | "cli" \
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| 324 | "pop eax" \
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| 325 | parm [] nomemory \
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| 326 | value [eax] \
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| 327 | modify exact [] nomemory;
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| 328 |
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| 329 | #undef ASMHalt
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| 330 | #pragma aux ASMHalt = \
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| 331 | "hlt" \
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| 332 | parm [] nomemory \
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| 333 | modify exact [] nomemory;
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| 334 |
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| 335 | #undef ASMRdMsr
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| 336 | #pragma aux ASMRdMsr = \
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| 337 | ".586" \
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| 338 | "rdmsr" \
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| 339 | parm [ecx] nomemory \
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| 340 | value [eax edx] \
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| 341 | modify exact [eax edx] nomemory;
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| 342 |
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| 343 | #undef ASMWrMsr
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| 344 | #pragma aux ASMWrMsr = \
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| 345 | ".586" \
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| 346 | "wrmsr" \
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| 347 | parm [ecx] [eax edx] nomemory \
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| 348 | modify exact [] nomemory;
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| 349 |
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| 350 | #undef ASMRdMsrEx
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| 351 | #pragma aux ASMRdMsrEx = \
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| 352 | ".586" \
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| 353 | "rdmsr" \
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| 354 | parm [ecx] [edi] nomemory \
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| 355 | value [eax edx] \
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| 356 | modify exact [eax edx] nomemory;
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| 357 |
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| 358 | #undef ASMWrMsrEx
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| 359 | #pragma aux ASMWrMsrEx = \
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| 360 | ".586" \
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| 361 | "wrmsr" \
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| 362 | parm [ecx] [edi] [eax edx] nomemory \
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| 363 | modify exact [] nomemory;
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| 364 |
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| 365 | #undef ASMRdMsr_Low
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| 366 | #pragma aux ASMRdMsr_Low = \
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| 367 | ".586" \
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| 368 | "rdmsr" \
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| 369 | parm [ecx] nomemory \
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| 370 | value [eax] \
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| 371 | modify exact [eax edx] nomemory;
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| 372 |
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| 373 | #undef ASMRdMsr_High
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| 374 | #pragma aux ASMRdMsr_High = \
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| 375 | ".586" \
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| 376 | "rdmsr" \
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| 377 | parm [ecx] nomemory \
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| 378 | value [edx] \
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| 379 | modify exact [eax edx] nomemory;
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| 380 |
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| 381 |
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| 382 | #undef ASMGetDR0
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| 383 | #pragma aux ASMGetDR0 = \
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| 384 | "mov eax, dr0" \
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| 385 | parm [] nomemory \
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| 386 | value [eax] \
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| 387 | modify exact [eax] nomemory;
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| 388 |
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| 389 | #undef ASMGetDR1
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| 390 | #pragma aux ASMGetDR1 = \
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| 391 | "mov eax, dr1" \
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| 392 | parm [] nomemory \
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| 393 | value [eax] \
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| 394 | modify exact [eax] nomemory;
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| 395 |
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| 396 | #undef ASMGetDR2
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| 397 | #pragma aux ASMGetDR2 = \
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| 398 | "mov eax, dr2" \
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| 399 | parm [] nomemory \
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| 400 | value [eax] \
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| 401 | modify exact [eax] nomemory;
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| 402 |
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| 403 | #undef ASMGetDR3
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| 404 | #pragma aux ASMGetDR3 = \
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| 405 | "mov eax, dr3" \
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| 406 | parm [] nomemory \
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| 407 | value [eax] \
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| 408 | modify exact [eax] nomemory;
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| 409 |
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| 410 | #undef ASMGetDR6
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| 411 | #pragma aux ASMGetDR6 = \
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| 412 | "mov eax, dr6" \
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| 413 | parm [] nomemory \
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| 414 | value [eax] \
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| 415 | modify exact [eax] nomemory;
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| 416 |
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| 417 | #undef ASMGetAndClearDR6
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| 418 | #pragma aux ASMGetAndClearDR6 = \
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| 419 | "mov edx, 0ffff0ff0h" \
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| 420 | "mov eax, dr6" \
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| 421 | "mov dr6, edx" \
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| 422 | parm [] nomemory \
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| 423 | value [eax] \
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| 424 | modify exact [eax edx] nomemory;
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| 425 |
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| 426 | #undef ASMGetDR7
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| 427 | #pragma aux ASMGetDR7 = \
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| 428 | "mov eax, dr7" \
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| 429 | parm [] nomemory \
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| 430 | value [eax] \
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| 431 | modify exact [eax] nomemory;
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| 432 |
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| 433 | #undef ASMSetDR0
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| 434 | #pragma aux ASMSetDR0 = \
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| 435 | "mov dr0, eax" \
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| 436 | parm [eax] nomemory \
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| 437 | modify exact [] nomemory;
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| 438 |
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| 439 | #undef ASMSetDR1
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| 440 | #pragma aux ASMSetDR1 = \
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| 441 | "mov dr1, eax" \
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| 442 | parm [eax] nomemory \
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| 443 | modify exact [] nomemory;
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| 444 |
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| 445 | #undef ASMSetDR2
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| 446 | #pragma aux ASMSetDR2 = \
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| 447 | "mov dr2, eax" \
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| 448 | parm [eax] nomemory \
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| 449 | modify exact [] nomemory;
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| 450 |
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| 451 | #undef ASMSetDR3
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| 452 | #pragma aux ASMSetDR3 = \
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| 453 | "mov dr3, eax" \
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| 454 | parm [eax] nomemory \
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| 455 | modify exact [] nomemory;
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| 456 |
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| 457 | #undef ASMSetDR6
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| 458 | #pragma aux ASMSetDR6 = \
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| 459 | "mov dr6, eax" \
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| 460 | parm [eax] nomemory \
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| 461 | modify exact [] nomemory;
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| 462 |
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| 463 | #undef ASMSetDR7
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| 464 | #pragma aux ASMSetDR7 = \
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| 465 | "mov dr7, eax" \
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| 466 | parm [eax] nomemory \
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| 467 | modify exact [] nomemory;
|
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| 468 |
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| 469 | /* Yeah, could've used outp here, but this keeps the main file simpler. */
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| 470 | #undef ASMOutU8
|
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| 471 | #pragma aux ASMOutU8 = \
|
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| 472 | "out dx, al" \
|
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| 473 | parm [dx] [al] nomemory \
|
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| 474 | modify exact [] nomemory;
|
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| 475 |
|
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| 476 | #undef ASMInU8
|
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| 477 | #pragma aux ASMInU8 = \
|
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| 478 | "in al, dx" \
|
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| 479 | parm [dx] nomemory \
|
|---|
| 480 | value [al] \
|
|---|
| 481 | modify exact [] nomemory;
|
|---|
| 482 |
|
|---|
| 483 | #undef ASMOutU16
|
|---|
| 484 | #pragma aux ASMOutU16 = \
|
|---|
| 485 | "out dx, ax" \
|
|---|
| 486 | parm [dx] [ax] nomemory \
|
|---|
| 487 | modify exact [] nomemory;
|
|---|
| 488 |
|
|---|
| 489 | #undef ASMInU16
|
|---|
| 490 | #pragma aux ASMInU16 = \
|
|---|
| 491 | "in ax, dx" \
|
|---|
| 492 | parm [dx] nomemory \
|
|---|
| 493 | value [ax] \
|
|---|
| 494 | modify exact [] nomemory;
|
|---|
| 495 |
|
|---|
| 496 | #undef ASMOutU32
|
|---|
| 497 | #pragma aux ASMOutU32 = \
|
|---|
| 498 | "out dx, eax" \
|
|---|
| 499 | parm [dx] [eax] nomemory \
|
|---|
| 500 | modify exact [] nomemory;
|
|---|
| 501 |
|
|---|
| 502 | #undef ASMInU32
|
|---|
| 503 | #pragma aux ASMInU32 = \
|
|---|
| 504 | "in eax, dx" \
|
|---|
| 505 | parm [dx] nomemory \
|
|---|
| 506 | value [eax] \
|
|---|
| 507 | modify exact [] nomemory;
|
|---|
| 508 |
|
|---|
| 509 | #undef ASMOutStrU8
|
|---|
| 510 | #pragma aux ASMOutStrU8 = \
|
|---|
| 511 | "rep outsb" \
|
|---|
| 512 | parm [dx] [esi] [ecx] nomemory \
|
|---|
| 513 | modify exact [esi ecx] nomemory;
|
|---|
| 514 |
|
|---|
| 515 | #undef ASMInStrU8
|
|---|
| 516 | #pragma aux ASMInStrU8 = \
|
|---|
| 517 | "rep insb" \
|
|---|
| 518 | parm [dx] [edi] [ecx] \
|
|---|
| 519 | modify exact [edi ecx];
|
|---|
| 520 |
|
|---|
| 521 | #undef ASMOutStrU16
|
|---|
| 522 | #pragma aux ASMOutStrU16 = \
|
|---|
| 523 | "rep outsw" \
|
|---|
| 524 | parm [dx] [esi] [ecx] nomemory \
|
|---|
| 525 | modify exact [esi ecx] nomemory;
|
|---|
| 526 |
|
|---|
| 527 | #undef ASMInStrU16
|
|---|
| 528 | #pragma aux ASMInStrU16 = \
|
|---|
| 529 | "rep insw" \
|
|---|
| 530 | parm [dx] [edi] [ecx] \
|
|---|
| 531 | modify exact [edi ecx];
|
|---|
| 532 |
|
|---|
| 533 | #undef ASMOutStrU32
|
|---|
| 534 | #pragma aux ASMOutStrU32 = \
|
|---|
| 535 | "rep outsd" \
|
|---|
| 536 | parm [dx] [esi] [ecx] nomemory \
|
|---|
| 537 | modify exact [esi ecx] nomemory;
|
|---|
| 538 |
|
|---|
| 539 | #undef ASMInStrU32
|
|---|
| 540 | #pragma aux ASMInStrU32 = \
|
|---|
| 541 | "rep insd" \
|
|---|
| 542 | parm [dx] [edi] [ecx] \
|
|---|
| 543 | modify exact [edi ecx];
|
|---|
| 544 |
|
|---|
| 545 | #undef ASMInvalidatePage
|
|---|
| 546 | #pragma aux ASMInvalidatePage = \
|
|---|
| 547 | "invlpg [eax]" \
|
|---|
| 548 | parm [eax] \
|
|---|
| 549 | modify exact [];
|
|---|
| 550 |
|
|---|
| 551 | #undef ASMWriteBackAndInvalidateCaches
|
|---|
| 552 | #pragma aux ASMWriteBackAndInvalidateCaches = \
|
|---|
| 553 | ".486" \
|
|---|
| 554 | "wbinvd" \
|
|---|
| 555 | parm [] nomemory \
|
|---|
| 556 | modify exact [] nomemory;
|
|---|
| 557 |
|
|---|
| 558 | #undef ASMInvalidateInternalCaches
|
|---|
| 559 | #pragma aux ASMInvalidateInternalCaches = \
|
|---|
| 560 | ".486" \
|
|---|
| 561 | "invd" \
|
|---|
| 562 | parm [] \
|
|---|
| 563 | modify exact [];
|
|---|
| 564 |
|
|---|
| 565 | #endif
|
|---|
| 566 |
|
|---|
