| 1 | /* $Id: DBGFCpu.cpp 107227 2024-12-04 15:20:14Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * DBGF - Debugger Facility, CPU State Accessors.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2009-2024 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * SPDX-License-Identifier: GPL-3.0-only
|
|---|
| 26 | */
|
|---|
| 27 |
|
|---|
| 28 |
|
|---|
| 29 | /*********************************************************************************************************************************
|
|---|
| 30 | * Header Files *
|
|---|
| 31 | *********************************************************************************************************************************/
|
|---|
| 32 | #define LOG_GROUP LOG_GROUP_DBGF
|
|---|
| 33 | #define VMCPU_INCL_CPUM_GST_CTX /* For CPUM_IMPORT_EXTRN_RET(). */
|
|---|
| 34 | #include <VBox/vmm/dbgf.h>
|
|---|
| 35 | #include <VBox/vmm/cpum.h>
|
|---|
| 36 | #include "DBGFInternal.h"
|
|---|
| 37 | #include <VBox/vmm/vm.h>
|
|---|
| 38 | #include <VBox/vmm/uvm.h>
|
|---|
| 39 | #include <iprt/errcore.h>
|
|---|
| 40 | #include <VBox/log.h>
|
|---|
| 41 | #include <VBox/param.h>
|
|---|
| 42 | #include <iprt/assert.h>
|
|---|
| 43 |
|
|---|
| 44 |
|
|---|
| 45 | /**
|
|---|
| 46 | * Wrapper around CPUMGetGuestMode.
|
|---|
| 47 | *
|
|---|
| 48 | * @returns VINF_SUCCESS.
|
|---|
| 49 | * @param pVM The cross context VM structure.
|
|---|
| 50 | * @param idCpu The current CPU ID.
|
|---|
| 51 | * @param penmMode Where to return the mode.
|
|---|
| 52 | */
|
|---|
| 53 | static DECLCALLBACK(int) dbgfR3CpuGetMode(PVM pVM, VMCPUID idCpu, CPUMMODE *penmMode)
|
|---|
| 54 | {
|
|---|
| 55 | Assert(idCpu == VMMGetCpuId(pVM));
|
|---|
| 56 | PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
|
|---|
| 57 | #ifdef VBOX_VMM_TARGET_ARMV8
|
|---|
| 58 | CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_PSTATE);
|
|---|
| 59 | #elif defined(VBOX_VMM_TARGET_X86)
|
|---|
| 60 | CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_CR0 | CPUMCTX_EXTRN_EFER);
|
|---|
| 61 | #else
|
|---|
| 62 | # error "port me"
|
|---|
| 63 | #endif
|
|---|
| 64 | *penmMode = CPUMGetGuestMode(pVCpu);
|
|---|
| 65 | return VINF_SUCCESS;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 |
|
|---|
| 69 | /**
|
|---|
| 70 | * Get the current CPU mode.
|
|---|
| 71 | *
|
|---|
| 72 | * @returns The CPU mode on success, CPUMMODE_INVALID on failure.
|
|---|
| 73 | * @param pUVM The user mode VM handle.
|
|---|
| 74 | * @param idCpu The target CPU ID.
|
|---|
| 75 | */
|
|---|
| 76 | VMMR3DECL(CPUMMODE) DBGFR3CpuGetMode(PUVM pUVM, VMCPUID idCpu)
|
|---|
| 77 | {
|
|---|
| 78 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, CPUMMODE_INVALID);
|
|---|
| 79 | VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, CPUMMODE_INVALID);
|
|---|
| 80 | AssertReturn(idCpu < pUVM->pVM->cCpus, CPUMMODE_INVALID);
|
|---|
| 81 |
|
|---|
| 82 | CPUMMODE enmMode;
|
|---|
| 83 | int rc = VMR3ReqPriorityCallWaitU(pUVM, idCpu, (PFNRT)dbgfR3CpuGetMode, 3, pUVM->pVM, idCpu, &enmMode);
|
|---|
| 84 | if (RT_FAILURE(rc))
|
|---|
| 85 | return CPUMMODE_INVALID;
|
|---|
| 86 | return enmMode;
|
|---|
| 87 | }
|
|---|
| 88 |
|
|---|
| 89 |
|
|---|
| 90 | /**
|
|---|
| 91 | * Wrapper around CPUMIsGuestIn64BitCode.
|
|---|
| 92 | *
|
|---|
| 93 | * @returns VINF_SUCCESS.
|
|---|
| 94 | * @param pVM The cross context VM structure.
|
|---|
| 95 | * @param idCpu The current CPU ID.
|
|---|
| 96 | * @param pfIn64BitCode Where to return the result.
|
|---|
| 97 | */
|
|---|
| 98 | static DECLCALLBACK(int) dbgfR3CpuIn64BitCode(PVM pVM, VMCPUID idCpu, bool *pfIn64BitCode)
|
|---|
| 99 | {
|
|---|
| 100 | Assert(idCpu == VMMGetCpuId(pVM));
|
|---|
| 101 | PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
|
|---|
| 102 | #ifdef VBOX_VMM_TARGET_ARMV8
|
|---|
| 103 | CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_PSTATE);
|
|---|
| 104 | #elif defined(VBOX_VMM_TARGET_X86)
|
|---|
| 105 | CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_CR0 | CPUMCTX_EXTRN_EFER);
|
|---|
| 106 | #else
|
|---|
| 107 | # error "port me"
|
|---|
| 108 | #endif
|
|---|
| 109 | *pfIn64BitCode = CPUMIsGuestIn64BitCode(pVCpu);
|
|---|
| 110 | return VINF_SUCCESS;
|
|---|
| 111 | }
|
|---|
| 112 |
|
|---|
| 113 |
|
|---|
| 114 | /**
|
|---|
| 115 | * Checks if the given CPU is executing 64-bit code or not.
|
|---|
| 116 | *
|
|---|
| 117 | * @returns true / false accordingly.
|
|---|
| 118 | * @param pUVM The user mode VM handle.
|
|---|
| 119 | * @param idCpu The target CPU ID.
|
|---|
| 120 | */
|
|---|
| 121 | VMMR3DECL(bool) DBGFR3CpuIsIn64BitCode(PUVM pUVM, VMCPUID idCpu)
|
|---|
| 122 | {
|
|---|
| 123 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, false);
|
|---|
| 124 | VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, false);
|
|---|
| 125 | AssertReturn(idCpu < pUVM->pVM->cCpus, false);
|
|---|
| 126 |
|
|---|
| 127 | bool fIn64BitCode;
|
|---|
| 128 | int rc = VMR3ReqPriorityCallWaitU(pUVM, idCpu, (PFNRT)dbgfR3CpuIn64BitCode, 3, pUVM->pVM, idCpu, &fIn64BitCode);
|
|---|
| 129 | if (RT_FAILURE(rc))
|
|---|
| 130 | return false;
|
|---|
| 131 | return fIn64BitCode;
|
|---|
| 132 | }
|
|---|
| 133 |
|
|---|
| 134 |
|
|---|
| 135 | #ifdef VBOX_VMM_TARGET_X86
|
|---|
| 136 | /**
|
|---|
| 137 | * Wrapper around CPUMIsGuestInV86Code.
|
|---|
| 138 | *
|
|---|
| 139 | * @returns VINF_SUCCESS.
|
|---|
| 140 | * @param pVM The cross context VM structure.
|
|---|
| 141 | * @param idCpu The current CPU ID.
|
|---|
| 142 | * @param pfInV86Code Where to return the result.
|
|---|
| 143 | */
|
|---|
| 144 | static DECLCALLBACK(int) dbgfR3CpuInV86Code(PVM pVM, VMCPUID idCpu, bool *pfInV86Code)
|
|---|
| 145 | {
|
|---|
| 146 | Assert(idCpu == VMMGetCpuId(pVM));
|
|---|
| 147 | PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
|
|---|
| 148 | CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_RFLAGS);
|
|---|
| 149 | *pfInV86Code = CPUMIsGuestInV86ModeEx(CPUMQueryGuestCtxPtr(pVCpu));
|
|---|
| 150 | return VINF_SUCCESS;
|
|---|
| 151 | }
|
|---|
| 152 | #endif
|
|---|
| 153 |
|
|---|
| 154 |
|
|---|
| 155 | /**
|
|---|
| 156 | * Checks if the given CPU is executing V8086 code or not.
|
|---|
| 157 | *
|
|---|
| 158 | * @returns true / false accordingly.
|
|---|
| 159 | * @param pUVM The user mode VM handle.
|
|---|
| 160 | * @param idCpu The target CPU ID.
|
|---|
| 161 | */
|
|---|
| 162 | VMMR3DECL(bool) DBGFR3CpuIsInV86Code(PUVM pUVM, VMCPUID idCpu)
|
|---|
| 163 | {
|
|---|
| 164 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, false);
|
|---|
| 165 | VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, false);
|
|---|
| 166 | AssertReturn(idCpu < pUVM->pVM->cCpus, false);
|
|---|
| 167 |
|
|---|
| 168 | #ifdef VBOX_VMM_TARGET_X86
|
|---|
| 169 | bool fInV86Code;
|
|---|
| 170 | int rc = VMR3ReqPriorityCallWaitU(pUVM, idCpu, (PFNRT)dbgfR3CpuInV86Code, 3, pUVM->pVM, idCpu, &fInV86Code);
|
|---|
| 171 | if (RT_FAILURE(rc))
|
|---|
| 172 | return false;
|
|---|
| 173 | return fInV86Code;
|
|---|
| 174 | #else
|
|---|
| 175 | return false;
|
|---|
| 176 | #endif
|
|---|
| 177 | }
|
|---|
| 178 |
|
|---|
| 179 |
|
|---|
| 180 | /**
|
|---|
| 181 | * Get the number of CPUs (or threads if you insist).
|
|---|
| 182 | *
|
|---|
| 183 | * @returns The number of CPUs
|
|---|
| 184 | * @param pUVM The user mode VM handle.
|
|---|
| 185 | */
|
|---|
| 186 | VMMR3DECL(VMCPUID) DBGFR3CpuGetCount(PUVM pUVM)
|
|---|
| 187 | {
|
|---|
| 188 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, 1);
|
|---|
| 189 | return pUVM->cCpus;
|
|---|
| 190 | }
|
|---|
| 191 |
|
|---|
| 192 |
|
|---|
| 193 | /**
|
|---|
| 194 | * Returns the state of the given CPU as a human readable string.
|
|---|
| 195 | *
|
|---|
| 196 | * @returns Pointer to the human readable CPU state string.
|
|---|
| 197 | * @param pUVM The user mode VM handle.
|
|---|
| 198 | * @param idCpu The target CPU ID.
|
|---|
| 199 | */
|
|---|
| 200 | VMMR3DECL(const char *) DBGFR3CpuGetState(PUVM pUVM, VMCPUID idCpu)
|
|---|
| 201 | {
|
|---|
| 202 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
|
|---|
| 203 | VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
|
|---|
| 204 | AssertReturn(idCpu < pUVM->pVM->cCpus, NULL);
|
|---|
| 205 |
|
|---|
| 206 | PVMCPU pVCpu = VMMGetCpuById(pUVM->pVM, idCpu);
|
|---|
| 207 | VMCPUSTATE enmCpuState = (VMCPUSTATE)ASMAtomicReadU32((volatile uint32_t *)&pVCpu->enmState);
|
|---|
| 208 |
|
|---|
| 209 | switch (enmCpuState)
|
|---|
| 210 | {
|
|---|
| 211 | case VMCPUSTATE_INVALID: return "<INVALID>";
|
|---|
| 212 | case VMCPUSTATE_STOPPED: return "Stopped";
|
|---|
| 213 | case VMCPUSTATE_STARTED: return "Started";
|
|---|
| 214 | case VMCPUSTATE_STARTED_HM: return "Started (HM)";
|
|---|
| 215 | case VMCPUSTATE_STARTED_EXEC: return "Started (Exec)";
|
|---|
| 216 | case VMCPUSTATE_STARTED_EXEC_NEM: return "Started (Exec NEM)";
|
|---|
| 217 | case VMCPUSTATE_STARTED_EXEC_NEM_WAIT: return "Started (Exec NEM Wait)";
|
|---|
| 218 | case VMCPUSTATE_STARTED_EXEC_NEM_CANCELED: return "Started (Exec NEM Canceled)";
|
|---|
| 219 | case VMCPUSTATE_STARTED_HALTED: return "Started (Halted)";
|
|---|
| 220 | case VMCPUSTATE_END: return "END";
|
|---|
| 221 | default: break;
|
|---|
| 222 | }
|
|---|
| 223 |
|
|---|
| 224 | AssertMsgFailedReturn(("Unknown CPU state %u\n", enmCpuState), "<UNKNOWN>");
|
|---|
| 225 | }
|
|---|
| 226 |
|
|---|
