| 1 | /* $Id: HostX86Impl.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox COM class implementation - x86 host specific IHost methods / attributes.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2023-2024 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 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 | #define LOG_GROUP LOG_GROUP_MAIN_HOSTX86
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| 29 | #include "LoggingNew.h"
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| 30 |
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| 31 | #include "HostX86Impl.h"
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| 32 |
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| 33 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 34 | # include <iprt/asm-amd64-x86.h>
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| 35 | #endif
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| 36 | #include <iprt/mp.h>
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| 37 |
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| 38 |
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| 39 | /*
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| 40 | * HostX86 implementation.
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| 41 | */
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| 42 | DEFINE_EMPTY_CTOR_DTOR(HostX86)
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| 43 |
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| 44 | HRESULT HostX86::FinalConstruct()
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| 45 | {
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| 46 | return BaseFinalConstruct();
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| 47 | }
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| 48 |
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| 49 | void HostX86::FinalRelease()
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| 50 | {
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| 51 | uninit();
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| 52 |
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| 53 | BaseFinalRelease();
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| 54 | }
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| 55 |
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| 56 | HRESULT HostX86::init(void)
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| 57 | {
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| 58 | /* Enclose the state transition NotReady->InInit->Ready */
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| 59 | AutoInitSpan autoInitSpan(this);
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| 60 | AssertReturn(autoInitSpan.isOk(), E_FAIL);
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| 61 |
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| 62 | /* Confirm a successful initialization */
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| 63 | autoInitSpan.setSucceeded();
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| 64 |
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| 65 | return S_OK;
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| 66 | }
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| 67 |
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| 68 | void HostX86::uninit()
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| 69 | {
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| 70 | /* Enclose the state transition Ready->InUninit->NotReady */
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| 71 | AutoUninitSpan autoUninitSpan(this);
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| 72 | if (autoUninitSpan.uninitDone())
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| 73 | return;
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| 74 | }
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| 75 |
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| 76 | /**
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| 77 | * Returns the specific CPUID leaf.
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| 78 | *
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| 79 | * @returns COM status code
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| 80 | * @param aCpuId The CPU number. Mostly ignored.
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| 81 | * @param aLeaf The leaf number.
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| 82 | * @param aSubLeaf The sub-leaf number.
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| 83 | * @param aValEAX Where to return EAX.
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| 84 | * @param aValEBX Where to return EBX.
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| 85 | * @param aValECX Where to return ECX.
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| 86 | * @param aValEDX Where to return EDX.
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| 87 | */
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| 88 | HRESULT HostX86::getProcessorCPUIDLeaf(ULONG aCpuId, ULONG aLeaf, ULONG aSubLeaf,
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| 89 | ULONG *aValEAX, ULONG *aValEBX, ULONG *aValECX, ULONG *aValEDX)
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| 90 | {
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| 91 | // no locking required
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| 92 |
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| 93 | /* Check that the CPU is online. */
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| 94 | /** @todo later use RTMpOnSpecific. */
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| 95 | if (!RTMpIsCpuOnline(aCpuId))
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| 96 | return RTMpIsCpuPresent(aCpuId)
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| 97 | ? setError(E_FAIL, tr("CPU no.%u is not present"), aCpuId)
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| 98 | : setError(E_FAIL, tr("CPU no.%u is not online"), aCpuId);
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| 99 |
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| 100 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 101 | uint32_t uEAX, uEBX, uECX, uEDX;
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| 102 | ASMCpuId_Idx_ECX(aLeaf, aSubLeaf, &uEAX, &uEBX, &uECX, &uEDX);
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| 103 | *aValEAX = uEAX;
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| 104 | *aValEBX = uEBX;
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| 105 | *aValECX = uECX;
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| 106 | *aValEDX = uEDX;
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| 107 | #else
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| 108 | RT_NOREF(aLeaf, aSubLeaf);
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| 109 | *aValEAX = 0;
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| 110 | *aValEBX = 0;
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| 111 | *aValECX = 0;
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| 112 | *aValEDX = 0;
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| 113 | #endif
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| 114 |
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| 115 | return S_OK;
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| 116 | }
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| 117 |
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