1 | ; $Id: ASMCpuId.asm 98103 2023-01-17 14:15:46Z vboxsync $
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2 | ;; @file
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3 | ; IPRT - ASMCpuIdExSlow().
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4 | ;
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5 |
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6 | ;
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7 | ; Copyright (C) 2012-2023 Oracle and/or its affiliates.
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8 | ;
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9 | ; This file is part of VirtualBox base platform packages, as
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10 | ; available from https://www.virtualbox.org.
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11 | ;
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12 | ; This program is free software; you can redistribute it and/or
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13 | ; modify it under the terms of the GNU General Public License
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14 | ; as published by the Free Software Foundation, in version 3 of the
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15 | ; License.
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16 | ;
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17 | ; This program is distributed in the hope that it will be useful, but
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18 | ; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | ; General Public License for more details.
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21 | ;
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22 | ; You should have received a copy of the GNU General Public License
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23 | ; along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | ;
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25 | ; The contents of this file may alternatively be used under the terms
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26 | ; of the Common Development and Distribution License Version 1.0
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27 | ; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | ; in the VirtualBox distribution, in which case the provisions of the
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29 | ; CDDL are applicable instead of those of the GPL.
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30 | ;
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31 | ; You may elect to license modified versions of this file under the
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32 | ; terms and conditions of either the GPL or the CDDL or both.
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33 | ;
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34 | ; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | ;
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36 |
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37 | ;*******************************************************************************
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38 | ;* Header Files *
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39 | ;*******************************************************************************
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40 | %include "iprt/asmdefs.mac"
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41 |
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42 | BEGINCODE
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43 |
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44 | ;;
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45 | ; CPUID with EAX input, returning ALL output registers (no NULL checking).
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46 | ;
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47 | ; @param uOperator 8086:bp+4 x86:ebp+8 gcc:rdi msc:rcx
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48 | ; @param pvEAX 8086:bp+8 x86:ebp+0c gcc:rsi msc:rdx
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49 | ; @param pvEBX 8086:bp+0c x86:ebp+10 gcc:rdx msc:r8
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50 | ; @param pvECX 8086:bp+10 x86:ebp+14 gcc:rcx msc:r9
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51 | ; @param pvEDX 8086:bp+14 x86:ebp+18 gcc:r8 msc:rbp+30h
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52 | ;
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53 | ; DECLASM(void) ASMCpuId(uint32_t uOperator, void *pvEAX, void *pvEBX, void *pvECX, void *pvEDX);
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54 | ;
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55 | RT_BEGINPROC ASMCpuId
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56 | push xBP
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57 | mov xBP, xSP
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58 | push xBX
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59 |
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60 | %ifdef ASM_CALL64_MSC
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61 | %if ARCH_BITS != 64
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62 | %error ARCH_BITS mismatch?
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63 | %endif
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64 | mov eax, ecx
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65 | mov r10, rdx
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66 | cpuid
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67 | mov [r10], eax
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68 | mov [r8], ebx
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69 | mov [r9], ecx
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70 | mov r10, [rbp+30h]
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71 | mov [r10], edx
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72 |
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73 | %elifdef ASM_CALL64_GCC
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74 | mov eax, edi
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75 | mov r10, rdx
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76 | mov r11, rcx
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77 | cpuid
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78 | mov [rsi], eax
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79 | mov [r10], ebx
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80 | mov [r11], ecx
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81 | mov [r8], edx
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82 |
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83 | %elif ARCH_BITS == 32
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84 | mov eax, [xBP + 08h]
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85 | cpuid
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86 | push edx
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87 | mov edx, [xBP + 0ch]
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88 | mov [edx], eax
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89 | mov edx, [xBP + 10h]
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90 | mov [edx], ebx
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91 | mov edx, [xBP + 14h]
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92 | mov [edx], ecx
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93 | mov edx, [xBP + 18h]
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94 | pop dword [edx]
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95 |
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96 | %elif ARCH_BITS == 16
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97 | push es
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98 | push di
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99 |
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100 | mov eax, [xBP + 04h]
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101 | cpuid
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102 | les di, [xBP + 08h]
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103 | mov [di], eax
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104 | les di, [xBP + 0ch]
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105 | mov [di], ebx
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106 | les di, [xBP + 10h]
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107 | mov [di], ecx
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108 | les di, [xBP + 14h]
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109 | mov [di], edx
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110 |
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111 | pop di
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112 | pop es
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113 | %else
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114 | %error unsupported arch
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115 | %endif
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116 |
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117 | pop xBX
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118 | leave
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119 | ret
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120 | ENDPROC ASMCpuId
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121 |
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