/* $Id: IEMR3.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */ /** @file * IEM - Interpreted Execution Manager. */ /* * Copyright (C) 2011-2022 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_EM #include #include #include #include "IEMInternal.h" #include #include #include #include static const char *iemGetTargetCpuName(uint32_t enmTargetCpu) { switch (enmTargetCpu) { #define CASE_RET_STR(enmValue) case enmValue: return #enmValue + (sizeof("IEMTARGETCPU_") - 1) CASE_RET_STR(IEMTARGETCPU_8086); CASE_RET_STR(IEMTARGETCPU_V20); CASE_RET_STR(IEMTARGETCPU_186); CASE_RET_STR(IEMTARGETCPU_286); CASE_RET_STR(IEMTARGETCPU_386); CASE_RET_STR(IEMTARGETCPU_486); CASE_RET_STR(IEMTARGETCPU_PENTIUM); CASE_RET_STR(IEMTARGETCPU_PPRO); CASE_RET_STR(IEMTARGETCPU_CURRENT); #undef CASE_RET_STR default: return "Unknown"; } } /** * Initializes the interpreted execution manager. * * This must be called after CPUM as we're quering information from CPUM about * the guest and host CPUs. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3DECL(int) IEMR3Init(PVM pVM) { uint64_t const uInitialTlbRevision = UINT64_C(0) - (IEMTLB_REVISION_INCR * 200U); uint64_t const uInitialTlbPhysRev = UINT64_C(0) - (IEMTLB_PHYS_REV_INCR * 100U); for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = pVM->apCpusR3[idCpu]; AssertCompile(sizeof(pVCpu->iem.s) <= sizeof(pVCpu->iem.padding)); /* (tstVMStruct can't do it's job w/o instruction stats) */ pVCpu->iem.s.CodeTlb.uTlbRevision = pVCpu->iem.s.DataTlb.uTlbRevision = uInitialTlbRevision; pVCpu->iem.s.CodeTlb.uTlbPhysRev = pVCpu->iem.s.DataTlb.uTlbPhysRev = uInitialTlbPhysRev; STAMR3RegisterF(pVM, &pVCpu->iem.s.cInstructions, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Instructions interpreted", "/IEM/CPU%u/cInstructions", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cLongJumps, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of longjmp calls", "/IEM/CPU%u/cLongJumps", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cPotentialExits, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Potential exits", "/IEM/CPU%u/cPotentialExits", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cRetAspectNotImplemented, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "VERR_IEM_ASPECT_NOT_IMPLEMENTED", "/IEM/CPU%u/cRetAspectNotImplemented", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cRetInstrNotImplemented, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "VERR_IEM_INSTR_NOT_IMPLEMENTED", "/IEM/CPU%u/cRetInstrNotImplemented", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cRetInfStatuses, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Informational statuses returned", "/IEM/CPU%u/cRetInfStatuses", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cRetErrStatuses, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Error statuses returned", "/IEM/CPU%u/cRetErrStatuses", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cbWritten, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Approx bytes written", "/IEM/CPU%u/cbWritten", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.cPendingCommit, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Times RC/R0 had to postpone instruction committing to ring-3", "/IEM/CPU%u/cPendingCommit", idCpu); #ifdef VBOX_WITH_STATISTICS STAMR3RegisterF(pVM, &pVCpu->iem.s.CodeTlb.cTlbHits, STAMTYPE_U64_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Code TLB hits", "/IEM/CPU%u/CodeTlb-Hits", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.DataTlb.cTlbHits, STAMTYPE_U64_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Data TLB hits", "/IEM/CPU%u/DataTlb-Hits", idCpu); #endif STAMR3RegisterF(pVM, &pVCpu->iem.s.CodeTlb.cTlbMisses, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Code TLB misses", "/IEM/CPU%u/CodeTlb-Misses", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.CodeTlb.uTlbRevision, STAMTYPE_X64, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Code TLB revision", "/IEM/CPU%u/CodeTlb-Revision", idCpu); STAMR3RegisterF(pVM, (void *)&pVCpu->iem.s.CodeTlb.uTlbPhysRev, STAMTYPE_X64, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Code TLB physical revision", "/IEM/CPU%u/CodeTlb-PhysRev", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.CodeTlb.cTlbSlowReadPath, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Code TLB slow read path", "/IEM/CPU%u/CodeTlb-SlowReads", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.DataTlb.cTlbMisses, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Data TLB misses", "/IEM/CPU%u/DataTlb-Misses", idCpu); STAMR3RegisterF(pVM, &pVCpu->iem.s.DataTlb.uTlbRevision, STAMTYPE_X64, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Data TLB revision", "/IEM/CPU%u/DataTlb-Revision", idCpu); STAMR3RegisterF(pVM, (void *)&pVCpu->iem.s.DataTlb.uTlbPhysRev, STAMTYPE_X64, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Data TLB physical revision", "/IEM/CPU%u/DataTlb-PhysRev", idCpu); #if defined(VBOX_WITH_STATISTICS) && !defined(DOXYGEN_RUNNING) /* Instruction statistics: */ # define IEM_DO_INSTR_STAT(a_Name, a_szDesc) \ STAMR3RegisterF(pVM, &pVCpu->iem.s.StatsRZ.a_Name, STAMTYPE_U32_RESET, STAMVISIBILITY_USED, \ STAMUNIT_COUNT, a_szDesc, "/IEM/CPU%u/instr-RZ/" #a_Name, idCpu); \ STAMR3RegisterF(pVM, &pVCpu->iem.s.StatsR3.a_Name, STAMTYPE_U32_RESET, STAMVISIBILITY_USED, \ STAMUNIT_COUNT, a_szDesc, "/IEM/CPU%u/instr-R3/" #a_Name, idCpu); # include "IEMInstructionStatisticsTmpl.h" # undef IEM_DO_INSTR_STAT #endif /* * Host and guest CPU information. */ if (idCpu == 0) { pVCpu->iem.s.enmCpuVendor = CPUMGetGuestCpuVendor(pVM); pVCpu->iem.s.enmHostCpuVendor = CPUMGetHostCpuVendor(pVM); #if IEM_CFG_TARGET_CPU == IEMTARGETCPU_DYNAMIC switch (pVM->cpum.ro.GuestFeatures.enmMicroarch) { case kCpumMicroarch_Intel_8086: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_8086; break; case kCpumMicroarch_Intel_80186: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_186; break; case kCpumMicroarch_Intel_80286: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_286; break; case kCpumMicroarch_Intel_80386: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_386; break; case kCpumMicroarch_Intel_80486: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_486; break; case kCpumMicroarch_Intel_P5: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_PENTIUM; break; case kCpumMicroarch_Intel_P6: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_PPRO; break; case kCpumMicroarch_NEC_V20: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_V20; break; case kCpumMicroarch_NEC_V30: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_V20; break; default: pVCpu->iem.s.uTargetCpu = IEMTARGETCPU_CURRENT; break; } LogRel(("IEM: TargetCpu=%s, Microarch=%s\n", iemGetTargetCpuName(pVCpu->iem.s.uTargetCpu), CPUMR3MicroarchName(pVM->cpum.ro.GuestFeatures.enmMicroarch))); #endif } else { pVCpu->iem.s.enmCpuVendor = pVM->apCpusR3[0]->iem.s.enmCpuVendor; pVCpu->iem.s.enmHostCpuVendor = pVM->apCpusR3[0]->iem.s.enmHostCpuVendor; #if IEM_CFG_TARGET_CPU == IEMTARGETCPU_DYNAMIC pVCpu->iem.s.uTargetCpu = pVM->apCpusR3[0]->iem.s.uTargetCpu; #endif } /* * Mark all buffers free. */ uint32_t iMemMap = RT_ELEMENTS(pVCpu->iem.s.aMemMappings); while (iMemMap-- > 0) pVCpu->iem.s.aMemMappings[iMemMap].fAccess = IEM_ACCESS_INVALID; } #ifdef VBOX_WITH_NESTED_HWVIRT_VMX /* * Register the per-VM VMX APIC-access page handler type. */ if (pVM->cpum.ro.GuestFeatures.fVmx) { PVMCPU pVCpu0 = pVM->apCpusR3[0]; int rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_ALL, false /*fKeepPgmLock*/, iemVmxApicAccessPageHandler, NULL /* pszModR0 */, "iemVmxApicAccessPageHandler", NULL /* pszPfHandlerR0 */, NULL /* pszModRC */, NULL /* pszHandlerRC */, NULL /* pszPfHandlerRC */, "VMX APIC-access page", &pVCpu0->iem.s.hVmxApicAccessPage); AssertLogRelRCReturn(rc, rc); } #endif return VINF_SUCCESS; } VMMR3DECL(int) IEMR3Term(PVM pVM) { NOREF(pVM); return VINF_SUCCESS; } VMMR3DECL(void) IEMR3Relocate(PVM pVM) { RT_NOREF(pVM); }