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Diffstat (limited to '')
| -rw-r--r-- | src/recompiler/VBoxRecompiler.c | 5481 |
1 files changed, 5481 insertions, 0 deletions
diff --git a/src/recompiler/VBoxRecompiler.c b/src/recompiler/VBoxRecompiler.c new file mode 100644 index 00000000..fd19df22 --- /dev/null +++ b/src/recompiler/VBoxRecompiler.c @@ -0,0 +1,5481 @@ +/* $Id: VBoxRecompiler.c $ */ +/** @file + * VBox Recompiler - QEMU. + */ + +/* + * Copyright (C) 2006-2019 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. + */ + +/** @page pg_rem REM - Recompiled Execution Manager. + * + * The recompiled exeuction manager (REM) serves the final fallback for guest + * execution, after HM / raw-mode and IEM have given up. + * + * The REM is qemu with a whole bunch of VBox specific customization for + * interfacing with PATM, CSAM, PGM and other components. + * + * @sa @ref grp_rem + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_REM +#include <stdio.h> /* FILE */ +#include "osdep.h" +#include "config.h" +#include "cpu.h" +#include "exec-all.h" +#include "ioport.h" + +#include <VBox/vmm/rem.h> +#include <VBox/vmm/vmapi.h> +#include <VBox/vmm/tm.h> +#include <VBox/vmm/ssm.h> +#include <VBox/vmm/em.h> +#include <VBox/vmm/iem.h> +#include <VBox/vmm/trpm.h> +#include <VBox/vmm/iom.h> +#include <VBox/vmm/mm.h> +#include <VBox/vmm/pgm.h> +#include <VBox/vmm/pdm.h> +#include <VBox/vmm/dbgf.h> +#include <VBox/dbg.h> +#include <VBox/vmm/apic.h> +#include <VBox/vmm/hm.h> +#include <VBox/vmm/patm.h> +#include <VBox/vmm/csam.h> +#include "REMInternal.h" +#include <VBox/vmm/vm.h> +#include <VBox/vmm/uvm.h> +#include <VBox/param.h> +#include <VBox/err.h> + +#include <VBox/log.h> +#include <iprt/alloca.h> +#include <iprt/semaphore.h> +#include <iprt/asm.h> +#include <iprt/assert.h> +#include <iprt/thread.h> +#include <iprt/string.h> + +/* Don't wanna include everything. */ +extern void cpu_exec_init_all(uintptr_t tb_size); +extern void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3); +extern void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0); +extern void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4); +extern void tlb_flush_page(CPUX86State *env, target_ulong addr); +extern void tlb_flush(CPUX86State *env, int flush_global); +extern void sync_seg(CPUX86State *env1, int seg_reg, int selector); +extern void sync_ldtr(CPUX86State *env1, int selector); + +#ifdef VBOX_STRICT +ram_addr_t get_phys_page_offset(target_ulong addr); +#endif + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ + +/** Copy 80-bit fpu register at pSrc to pDst. + * This is probably faster than *calling* memcpy. + */ +#define REM_COPY_FPU_REG(pDst, pSrc) \ + do { *(PX86FPUMMX)(pDst) = *(const X86FPUMMX *)(pSrc); } while (0) + +/** How remR3RunLoggingStep operates. */ +#define REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + + +/** Selector flag shift between qemu and VBox. + * VBox shifts the qemu bits to the right. */ +#define SEL_FLAGS_SHIFT (8) +/** Mask applied to the shifted qemu selector flags to get the attributes VBox + * (VT-x) needs. */ +#define SEL_FLAGS_SMASK UINT32_C(0x1F0FF) + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +static DECLCALLBACK(int) remR3Save(PVM pVM, PSSMHANDLE pSSM); +static DECLCALLBACK(int) remR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass); +static DECLCALLBACK(int) remR3LoadDone(PVM pVM, PSSMHANDLE pSSM); +static void remR3StateUpdate(PVM pVM, PVMCPU pVCpu); +static int remR3InitPhysRamSizeAndDirtyMap(PVM pVM, bool fGuarded); + +static uint32_t remR3MMIOReadU8(void *pvEnv, target_phys_addr_t GCPhys); +static uint32_t remR3MMIOReadU16(void *pvEnv, target_phys_addr_t GCPhys); +static uint32_t remR3MMIOReadU32(void *pvEnv, target_phys_addr_t GCPhys); +static void remR3MMIOWriteU8(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32); +static void remR3MMIOWriteU16(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32); +static void remR3MMIOWriteU32(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32); + +static uint32_t remR3HandlerReadU8(void *pvVM, target_phys_addr_t GCPhys); +static uint32_t remR3HandlerReadU16(void *pvVM, target_phys_addr_t GCPhys); +static uint32_t remR3HandlerReadU32(void *pvVM, target_phys_addr_t GCPhys); +static void remR3HandlerWriteU8(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32); +static void remR3HandlerWriteU16(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32); +static void remR3HandlerWriteU32(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32); + +static void remR3NotifyHandlerPhysicalDeregister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, bool fHasHCHandler, bool fRestoreAsRAM); +static void remR3NotifyHandlerPhysicalRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, bool fHasHCHandler); +static void remR3NotifyHandlerPhysicalModify(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhysOld, RTGCPHYS GCPhysNew, RTGCPHYS cb, bool fHasHCHandler, bool fRestoreAsRAM); + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ + +/** @todo Move stats to REM::s some rainy day we have nothing do to. */ +#ifdef VBOX_WITH_STATISTICS +static STAMPROFILEADV gStatExecuteSingleInstr; +static STAMPROFILEADV gStatCompilationQEmu; +static STAMPROFILEADV gStatRunCodeQEmu; +static STAMPROFILEADV gStatTotalTimeQEmu; +static STAMPROFILEADV gStatTimers; +static STAMPROFILEADV gStatTBLookup; +static STAMPROFILEADV gStatIRQ; +static STAMPROFILEADV gStatRawCheck; +static STAMPROFILEADV gStatMemRead; +static STAMPROFILEADV gStatMemWrite; +static STAMPROFILE gStatGCPhys2HCVirt; +static STAMCOUNTER gStatCpuGetTSC; +static STAMCOUNTER gStatRefuseTFInhibit; +static STAMCOUNTER gStatRefuseVM86; +static STAMCOUNTER gStatRefusePaging; +static STAMCOUNTER gStatRefusePAE; +static STAMCOUNTER gStatRefuseIOPLNot0; +static STAMCOUNTER gStatRefuseIF0; +static STAMCOUNTER gStatRefuseCode16; +static STAMCOUNTER gStatRefuseWP0; +static STAMCOUNTER gStatRefuseRing1or2; +static STAMCOUNTER gStatRefuseCanExecute; +static STAMCOUNTER gaStatRefuseStale[6]; +static STAMCOUNTER gStatREMGDTChange; +static STAMCOUNTER gStatREMIDTChange; +static STAMCOUNTER gStatREMLDTRChange; +static STAMCOUNTER gStatREMTRChange; +static STAMCOUNTER gStatSelOutOfSync[6]; +static STAMCOUNTER gStatSelOutOfSyncStateBack[6]; +static STAMCOUNTER gStatFlushTBs; +#endif +/* in exec.c */ +extern uint32_t tlb_flush_count; +extern uint32_t tb_flush_count; +extern uint32_t tb_phys_invalidate_count; + +/* + * Global stuff. + */ + +/** MMIO read callbacks. */ +CPUReadMemoryFunc *g_apfnMMIORead[3] = +{ + remR3MMIOReadU8, + remR3MMIOReadU16, + remR3MMIOReadU32 +}; + +/** MMIO write callbacks. */ +CPUWriteMemoryFunc *g_apfnMMIOWrite[3] = +{ + remR3MMIOWriteU8, + remR3MMIOWriteU16, + remR3MMIOWriteU32 +}; + +/** Handler read callbacks. */ +CPUReadMemoryFunc *g_apfnHandlerRead[3] = +{ + remR3HandlerReadU8, + remR3HandlerReadU16, + remR3HandlerReadU32 +}; + +/** Handler write callbacks. */ +CPUWriteMemoryFunc *g_apfnHandlerWrite[3] = +{ + remR3HandlerWriteU8, + remR3HandlerWriteU16, + remR3HandlerWriteU32 +}; + + +#ifdef VBOX_WITH_DEBUGGER +/* + * Debugger commands. + */ +static FNDBGCCMD remR3CmdDisasEnableStepping;; + +/** '.remstep' arguments. */ +static const DBGCVARDESC g_aArgRemStep[] = +{ + /* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */ + { 0, ~0U, DBGCVAR_CAT_NUMBER, 0, "on/off", "Boolean value/mnemonic indicating the new state." }, +}; + +/** Command descriptors. */ +static const DBGCCMD g_aCmds[] = +{ + { + .pszCmd ="remstep", + .cArgsMin = 0, + .cArgsMax = 1, + .paArgDescs = &g_aArgRemStep[0], + .cArgDescs = RT_ELEMENTS(g_aArgRemStep), + .fFlags = 0, + .pfnHandler = remR3CmdDisasEnableStepping, + .pszSyntax = "[on/off]", + .pszDescription = "Enable or disable the single stepping with logged disassembly. " + "If no arguments show the current state." + } +}; +#endif + +/** Prologue code, must be in lower 4G to simplify jumps to/from generated code. + * @todo huh??? That cannot be the case on the mac... So, this + * point is probably not valid any longer. */ +uint8_t *code_gen_prologue; + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +void remAbort(int rc, const char *pszTip); +extern int testmath(void); + +/* Put them here to avoid unused variable warning. */ +AssertCompile(RT_SIZEOFMEMB(VM, rem.padding) >= RT_SIZEOFMEMB(VM, rem.s)); +#if !defined(IPRT_NO_CRT) && (defined(RT_OS_LINUX) || defined(RT_OS_DARWIN) || defined(RT_OS_WINDOWS)) +//AssertCompileMemberSize(REM, Env, REM_ENV_SIZE); +/* Why did this have to be identical?? */ +AssertCompile(RT_SIZEOFMEMB(REM, Env) <= REM_ENV_SIZE); +#else +AssertCompile(RT_SIZEOFMEMB(REM, Env) <= REM_ENV_SIZE); +#endif + + +/** + * Initializes the REM. + * + * @returns VBox status code. + * @param pVM The VM to operate on. + */ +REMR3DECL(int) REMR3Init(PVM pVM) +{ + PREMHANDLERNOTIFICATION pCur; + uint32_t u32Dummy; + int rc; + unsigned i; + +#ifdef VBOX_ENABLE_VBOXREM64 + LogRel(("Using 64-bit aware REM\n")); +#endif + + /* + * Assert sanity. + */ + AssertReleaseMsg(sizeof(pVM->rem.padding) >= sizeof(pVM->rem.s), ("%#x >= %#x; sizeof(Env)=%#x\n", sizeof(pVM->rem.padding), sizeof(pVM->rem.s), sizeof(pVM->rem.s.Env))); + AssertReleaseMsg(sizeof(pVM->rem.s.Env) <= REM_ENV_SIZE, ("%#x == %#x\n", sizeof(pVM->rem.s.Env), REM_ENV_SIZE)); + AssertReleaseMsg(!(RT_UOFFSETOF(VM, rem) & 31), ("off=%#zx\n", RT_UOFFSETOF(VM, rem))); +#if 0 /* just an annoyance at the moment. */ +#if defined(DEBUG) && !defined(RT_OS_SOLARIS) && !defined(RT_OS_FREEBSD) /// @todo fix the solaris and freebsd math stuff. + Assert(!testmath()); +#endif +#endif + + /* + * Init some internal data members. + */ + pVM->rem.s.offVM = RT_UOFFSETOF(VM, rem.s); + pVM->rem.s.Env.pVM = pVM; +#ifdef CPU_RAW_MODE_INIT + pVM->rem.s.state |= CPU_RAW_MODE_INIT; +#endif + + /* + * Initialize the REM critical section. + * + * Note: This is not a 100% safe solution as updating the internal memory state while another VCPU + * is executing code could be dangerous. Taking the REM lock is not an option due to the danger of + * deadlocks. (mostly pgm vs rem locking) + */ + rc = PDMR3CritSectInit(pVM, &pVM->rem.s.CritSectRegister, RT_SRC_POS, "REM-Register"); + AssertRCReturn(rc, rc); + + /* ctx. */ + pVM->rem.s.pCtx = NULL; /* set when executing code. */ + AssertMsg(MMR3PhysGetRamSize(pVM) == 0, ("Init order has changed! REM depends on notification about ALL physical memory registrations\n")); + + /* ignore all notifications */ + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + code_gen_prologue = RTMemExecAlloc(_1K); + AssertLogRelReturn(code_gen_prologue, VERR_NO_MEMORY); + + cpu_exec_init_all(0); + + /* + * Init the recompiler. + */ + if (!cpu_x86_init(&pVM->rem.s.Env, "vbox")) + { + AssertMsgFailed(("cpu_x86_init failed - impossible!\n")); + return VERR_GENERAL_FAILURE; + } + PVMCPU pVCpu = VMMGetCpu(pVM); + CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext_features, &pVM->rem.s.Env.cpuid_features); + CPUMGetGuestCpuId(pVCpu, 0x80000001, 0, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext3_features, &pVM->rem.s.Env.cpuid_ext2_features); + + EMRemLock(pVM); + cpu_reset(&pVM->rem.s.Env); + EMRemUnlock(pVM); + + /* allocate code buffer for single instruction emulation. */ + pVM->rem.s.Env.cbCodeBuffer = 4096; + pVM->rem.s.Env.pvCodeBuffer = RTMemExecAlloc(pVM->rem.s.Env.cbCodeBuffer); + AssertMsgReturn(pVM->rem.s.Env.pvCodeBuffer, ("Failed to allocate code buffer!\n"), VERR_NO_MEMORY); + + /* Finally, set the cpu_single_env global. */ + cpu_single_env = &pVM->rem.s.Env; + + /* Nothing is pending by default */ + pVM->rem.s.uStateLoadPendingInterrupt = REM_NO_PENDING_IRQ; + + /* + * Register ram types. + */ + pVM->rem.s.iMMIOMemType = cpu_register_io_memory(g_apfnMMIORead, g_apfnMMIOWrite, &pVM->rem.s.Env); + AssertReleaseMsg(pVM->rem.s.iMMIOMemType >= 0, ("pVM->rem.s.iMMIOMemType=%d\n", pVM->rem.s.iMMIOMemType)); + pVM->rem.s.iHandlerMemType = cpu_register_io_memory(g_apfnHandlerRead, g_apfnHandlerWrite, pVM); + AssertReleaseMsg(pVM->rem.s.iHandlerMemType >= 0, ("pVM->rem.s.iHandlerMemType=%d\n", pVM->rem.s.iHandlerMemType)); + Log2(("REM: iMMIOMemType=%d iHandlerMemType=%d\n", pVM->rem.s.iMMIOMemType, pVM->rem.s.iHandlerMemType)); + + /* stop ignoring. */ + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + + /* + * Register the saved state data unit. + */ + rc = SSMR3RegisterInternal(pVM, "rem", 1, REM_SAVED_STATE_VERSION, sizeof(uint32_t) * 10, + NULL, NULL, NULL, + NULL, remR3Save, NULL, + NULL, remR3Load, remR3LoadDone); + if (RT_FAILURE(rc)) + return rc; + +#ifdef VBOX_WITH_DEBUGGER + /* + * Debugger commands. + */ + static bool fRegisteredCmds = false; + if (!fRegisteredCmds) + { + int rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds)); + if (RT_SUCCESS(rc)) + fRegisteredCmds = true; + } +#endif + +#ifdef VBOX_WITH_STATISTICS + /* + * Statistics. + */ + STAM_REG(pVM, &gStatExecuteSingleInstr, STAMTYPE_PROFILE, "/PROF/REM/SingleInstr",STAMUNIT_TICKS_PER_CALL, "Profiling single instruction emulation."); + STAM_REG(pVM, &gStatCompilationQEmu, STAMTYPE_PROFILE, "/PROF/REM/Compile", STAMUNIT_TICKS_PER_CALL, "Profiling QEmu compilation."); + STAM_REG(pVM, &gStatRunCodeQEmu, STAMTYPE_PROFILE, "/PROF/REM/Runcode", STAMUNIT_TICKS_PER_CALL, "Profiling QEmu code execution."); + STAM_REG(pVM, &gStatTotalTimeQEmu, STAMTYPE_PROFILE, "/PROF/REM/Emulate", STAMUNIT_TICKS_PER_CALL, "Profiling code emulation."); + STAM_REG(pVM, &gStatTimers, STAMTYPE_PROFILE, "/PROF/REM/Timers", STAMUNIT_TICKS_PER_CALL, "Profiling timer queue processing."); + STAM_REG(pVM, &gStatTBLookup, STAMTYPE_PROFILE, "/PROF/REM/TBLookup", STAMUNIT_TICKS_PER_CALL, "Profiling translation block lookup."); + STAM_REG(pVM, &gStatIRQ, STAMTYPE_PROFILE, "/PROF/REM/IRQ", STAMUNIT_TICKS_PER_CALL, "Profiling IRQ delivery."); + STAM_REG(pVM, &gStatRawCheck, STAMTYPE_PROFILE, "/PROF/REM/RawCheck", STAMUNIT_TICKS_PER_CALL, "Profiling remR3CanExecuteRaw calls."); + STAM_REG(pVM, &gStatMemRead, STAMTYPE_PROFILE, "/PROF/REM/MemRead", STAMUNIT_TICKS_PER_CALL, "Profiling memory access."); + STAM_REG(pVM, &gStatMemWrite, STAMTYPE_PROFILE, "/PROF/REM/MemWrite", STAMUNIT_TICKS_PER_CALL, "Profiling memory access."); + STAM_REG(pVM, &gStatGCPhys2HCVirt, STAMTYPE_PROFILE, "/PROF/REM/GCPhys2HCVirt", STAMUNIT_TICKS_PER_CALL, "Profiling memory conversion (PGMR3PhysTlbGCPhys2Ptr)."); + + STAM_REG(pVM, &gStatCpuGetTSC, STAMTYPE_COUNTER, "/REM/CpuGetTSC", STAMUNIT_OCCURENCES, "cpu_get_tsc calls"); + + STAM_REG(pVM, &gStatRefuseTFInhibit, STAMTYPE_COUNTER, "/REM/Refuse/TFInibit", STAMUNIT_OCCURENCES, "Raw mode refused because of TF or irq inhibit"); + STAM_REG(pVM, &gStatRefuseVM86, STAMTYPE_COUNTER, "/REM/Refuse/VM86", STAMUNIT_OCCURENCES, "Raw mode refused because of VM86"); + STAM_REG(pVM, &gStatRefusePaging, STAMTYPE_COUNTER, "/REM/Refuse/Paging", STAMUNIT_OCCURENCES, "Raw mode refused because of disabled paging/pm"); + STAM_REG(pVM, &gStatRefusePAE, STAMTYPE_COUNTER, "/REM/Refuse/PAE", STAMUNIT_OCCURENCES, "Raw mode refused because of PAE"); + STAM_REG(pVM, &gStatRefuseIOPLNot0, STAMTYPE_COUNTER, "/REM/Refuse/IOPLNot0", STAMUNIT_OCCURENCES, "Raw mode refused because of IOPL != 0"); + STAM_REG(pVM, &gStatRefuseIF0, STAMTYPE_COUNTER, "/REM/Refuse/IF0", STAMUNIT_OCCURENCES, "Raw mode refused because of IF=0"); + STAM_REG(pVM, &gStatRefuseCode16, STAMTYPE_COUNTER, "/REM/Refuse/Code16", STAMUNIT_OCCURENCES, "Raw mode refused because of 16 bit code"); + STAM_REG(pVM, &gStatRefuseWP0, STAMTYPE_COUNTER, "/REM/Refuse/WP0", STAMUNIT_OCCURENCES, "Raw mode refused because of WP=0"); + STAM_REG(pVM, &gStatRefuseRing1or2, STAMTYPE_COUNTER, "/REM/Refuse/Ring1or2", STAMUNIT_OCCURENCES, "Raw mode refused because of ring 1/2 execution"); + STAM_REG(pVM, &gStatRefuseCanExecute, STAMTYPE_COUNTER, "/REM/Refuse/CanExecuteRaw", STAMUNIT_OCCURENCES, "Raw mode refused because of cCanExecuteRaw"); + STAM_REG(pVM, &gaStatRefuseStale[R_ES], STAMTYPE_COUNTER, "/REM/Refuse/StaleES", STAMUNIT_OCCURENCES, "Raw mode refused because of stale ES"); + STAM_REG(pVM, &gaStatRefuseStale[R_CS], STAMTYPE_COUNTER, "/REM/Refuse/StaleCS", STAMUNIT_OCCURENCES, "Raw mode refused because of stale CS"); + STAM_REG(pVM, &gaStatRefuseStale[R_SS], STAMTYPE_COUNTER, "/REM/Refuse/StaleSS", STAMUNIT_OCCURENCES, "Raw mode refused because of stale SS"); + STAM_REG(pVM, &gaStatRefuseStale[R_DS], STAMTYPE_COUNTER, "/REM/Refuse/StaleDS", STAMUNIT_OCCURENCES, "Raw mode refused because of stale DS"); + STAM_REG(pVM, &gaStatRefuseStale[R_FS], STAMTYPE_COUNTER, "/REM/Refuse/StaleFS", STAMUNIT_OCCURENCES, "Raw mode refused because of stale FS"); + STAM_REG(pVM, &gaStatRefuseStale[R_GS], STAMTYPE_COUNTER, "/REM/Refuse/StaleGS", STAMUNIT_OCCURENCES, "Raw mode refused because of stale GS"); + STAM_REG(pVM, &gStatFlushTBs, STAMTYPE_COUNTER, "/REM/FlushTB", STAMUNIT_OCCURENCES, "Number of TB flushes"); + + STAM_REG(pVM, &gStatREMGDTChange, STAMTYPE_COUNTER, "/REM/Change/GDTBase", STAMUNIT_OCCURENCES, "GDT base changes"); + STAM_REG(pVM, &gStatREMLDTRChange, STAMTYPE_COUNTER, "/REM/Change/LDTR", STAMUNIT_OCCURENCES, "LDTR changes"); + STAM_REG(pVM, &gStatREMIDTChange, STAMTYPE_COUNTER, "/REM/Change/IDTBase", STAMUNIT_OCCURENCES, "IDT base changes"); + STAM_REG(pVM, &gStatREMTRChange, STAMTYPE_COUNTER, "/REM/Change/TR", STAMUNIT_OCCURENCES, "TR selector changes"); + + STAM_REG(pVM, &gStatSelOutOfSync[0], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/ES", STAMUNIT_OCCURENCES, "ES out of sync"); + STAM_REG(pVM, &gStatSelOutOfSync[1], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/CS", STAMUNIT_OCCURENCES, "CS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSync[2], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/SS", STAMUNIT_OCCURENCES, "SS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSync[3], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/DS", STAMUNIT_OCCURENCES, "DS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSync[4], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/FS", STAMUNIT_OCCURENCES, "FS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSync[5], STAMTYPE_COUNTER, "/REM/State/SelOutOfSync/GS", STAMUNIT_OCCURENCES, "GS out of sync"); + + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[0], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/ES", STAMUNIT_OCCURENCES, "ES out of sync"); + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[1], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/CS", STAMUNIT_OCCURENCES, "CS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[2], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/SS", STAMUNIT_OCCURENCES, "SS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[3], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/DS", STAMUNIT_OCCURENCES, "DS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[4], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/FS", STAMUNIT_OCCURENCES, "FS out of sync"); + STAM_REG(pVM, &gStatSelOutOfSyncStateBack[5], STAMTYPE_COUNTER, "/REM/StateBack/SelOutOfSync/GS", STAMUNIT_OCCURENCES, "GS out of sync"); + + STAM_REG(pVM, &pVM->rem.s.Env.StatTbFlush, STAMTYPE_PROFILE, "/REM/TbFlush", STAMUNIT_TICKS_PER_CALL, "profiling tb_flush()."); +#endif /* VBOX_WITH_STATISTICS */ + AssertCompileMemberAlignment(CPUX86State, StatTbFlush, 4); + AssertCompileMemberAlignment(CPUX86State, StatTbFlush, 8); + + STAM_REL_REG(pVM, &tb_flush_count, STAMTYPE_U32_RESET, "/REM/TbFlushCount", STAMUNIT_OCCURENCES, "tb_flush() calls"); + STAM_REL_REG(pVM, &tb_phys_invalidate_count, STAMTYPE_U32_RESET, "/REM/TbPhysInvldCount", STAMUNIT_OCCURENCES, "tb_phys_invalidate() calls"); + STAM_REL_REG(pVM, &tlb_flush_count, STAMTYPE_U32_RESET, "/REM/TlbFlushCount", STAMUNIT_OCCURENCES, "tlb_flush() calls"); + + +#ifdef DEBUG_ALL_LOGGING + loglevel = ~0; +#endif + + /* + * Init the handler notification lists. + */ + pVM->rem.s.idxPendingList = UINT32_MAX; + pVM->rem.s.idxFreeList = 0; + + for (i = 0 ; i < RT_ELEMENTS(pVM->rem.s.aHandlerNotifications); i++) + { + pCur = &pVM->rem.s.aHandlerNotifications[i]; + pCur->idxNext = i + 1; + pCur->idxSelf = i; + } + pCur->idxNext = UINT32_MAX; /* the last record. */ + + return rc; +} + + +/** + * Finalizes the REM initialization. + * + * This is called after all components, devices and drivers has + * been initialized. Its main purpose it to finish the RAM related + * initialization. + * + * @returns VBox status code. + * + * @param pVM The VM handle. + */ +REMR3DECL(int) REMR3InitFinalize(PVM pVM) +{ + int rc; + + /* + * Ram size & dirty bit map. + */ + Assert(!pVM->rem.s.fGCPhysLastRamFixed); + pVM->rem.s.fGCPhysLastRamFixed = true; +#ifdef RT_STRICT + rc = remR3InitPhysRamSizeAndDirtyMap(pVM, true /* fGuarded */); +#else + rc = remR3InitPhysRamSizeAndDirtyMap(pVM, false /* fGuarded */); +#endif + return rc; +} + +/** + * Initializes ram_list.phys_dirty and ram_list.phys_dirty_size. + * + * @returns VBox status code. + * @param pVM The VM handle. + * @param fGuarded Whether to guard the map. + */ +static int remR3InitPhysRamSizeAndDirtyMap(PVM pVM, bool fGuarded) +{ + int rc = VINF_SUCCESS; + RTGCPHYS cb; + + AssertLogRelReturn(QLIST_EMPTY(&ram_list.blocks), VERR_INTERNAL_ERROR_2); + + cb = pVM->rem.s.GCPhysLastRam + 1; + AssertLogRelMsgReturn(cb > pVM->rem.s.GCPhysLastRam, + ("GCPhysLastRam=%RGp - out of range\n", pVM->rem.s.GCPhysLastRam), + VERR_OUT_OF_RANGE); + + ram_list.phys_dirty_size = cb >> PAGE_SHIFT; + AssertMsg(((RTGCPHYS)ram_list.phys_dirty_size << PAGE_SHIFT) == cb, ("%RGp\n", cb)); + + if (!fGuarded) + { + ram_list.phys_dirty = MMR3HeapAlloc(pVM, MM_TAG_REM, ram_list.phys_dirty_size); + AssertLogRelMsgReturn(ram_list.phys_dirty, ("Failed to allocate %u bytes of dirty page map bytes\n", ram_list.phys_dirty_size), VERR_NO_MEMORY); + } + else + { + /* + * Fill it up the nearest 4GB RAM and leave at least _64KB of guard after it. + */ + uint32_t cbBitmapAligned = RT_ALIGN_32(ram_list.phys_dirty_size, PAGE_SIZE); + uint32_t cbBitmapFull = RT_ALIGN_32(ram_list.phys_dirty_size, (_4G >> PAGE_SHIFT)); + if (cbBitmapFull == cbBitmapAligned) + cbBitmapFull += _4G >> PAGE_SHIFT; + else if (cbBitmapFull - cbBitmapAligned < _64K) + cbBitmapFull += _64K; + + ram_list.phys_dirty = RTMemPageAlloc(cbBitmapFull); + AssertLogRelMsgReturn(ram_list.phys_dirty, ("Failed to allocate %u bytes of dirty page map bytes\n", cbBitmapFull), VERR_NO_MEMORY); + + rc = RTMemProtect(ram_list.phys_dirty + cbBitmapAligned, cbBitmapFull - cbBitmapAligned, RTMEM_PROT_NONE); + if (RT_FAILURE(rc)) + { + RTMemPageFree(ram_list.phys_dirty, cbBitmapFull); + AssertLogRelRCReturn(rc, rc); + } + + ram_list.phys_dirty += cbBitmapAligned - ram_list.phys_dirty_size; + } + + /* initialize it. */ + memset(ram_list.phys_dirty, 0xff, ram_list.phys_dirty_size); + return rc; +} + + +/** + * Terminates the REM. + * + * Termination means cleaning up and freeing all resources, + * the VM it self is at this point powered off or suspended. + * + * @returns VBox status code. + * @param pVM The VM to operate on. + */ +REMR3DECL(int) REMR3Term(PVM pVM) +{ + /* + * Statistics. + */ + STAMR3Deregister(pVM->pUVM, "/PROF/REM/*"); + STAMR3Deregister(pVM->pUVM, "/REM/*"); + + return VINF_SUCCESS; +} + + +/** + * The VM is being reset. + * + * For the REM component this means to call the cpu_reset() and + * reinitialize some state variables. + * + * @param pVM VM handle. + */ +REMR3DECL(void) REMR3Reset(PVM pVM) +{ + EMRemLock(pVM); /* Only pro forma, we're in a rendezvous. */ + + /* + * Reset the REM cpu. + */ + Assert(pVM->rem.s.cIgnoreAll == 0); + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + cpu_reset(&pVM->rem.s.Env); + pVM->rem.s.cInvalidatedPages = 0; + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + Assert(pVM->rem.s.cIgnoreAll == 0); + + /* Clear raw ring 0 init state */ + pVM->rem.s.Env.state &= ~CPU_RAW_RING0; + + /* Flush the TBs the next time we execute code here. */ + pVM->rem.s.fFlushTBs = true; + + EMRemUnlock(pVM); +} + + +/** + * Execute state save operation. + * + * @returns VBox status code. + * @param pVM VM Handle. + * @param pSSM SSM operation handle. + */ +static DECLCALLBACK(int) remR3Save(PVM pVM, PSSMHANDLE pSSM) +{ + PREM pRem = &pVM->rem.s; + + /* + * Save the required CPU Env bits. + * (Not much because we're never in REM when doing the save.) + */ + LogFlow(("remR3Save:\n")); + Assert(!pRem->fInREM); + SSMR3PutU32(pSSM, pRem->Env.hflags); + SSMR3PutU32(pSSM, ~0); /* separator */ + + /* Remember if we've entered raw mode (vital for ring 1 checks in e.g. iret emulation). */ + SSMR3PutU32(pSSM, !!(pRem->Env.state & CPU_RAW_RING0)); + SSMR3PutU32(pSSM, REM_NO_PENDING_IRQ); + + return SSMR3PutU32(pSSM, ~0); /* terminator */ +} + + +/** + * Execute state load operation. + * + * @returns VBox status code. + * @param pVM VM Handle. + * @param pSSM SSM operation handle. + * @param uVersion Data layout version. + * @param uPass The data pass. + */ +static DECLCALLBACK(int) remR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) +{ + uint32_t u32Dummy; + uint32_t fRawRing0 = false; + uint32_t u32Sep; + uint32_t i; + int rc; + PREM pRem; + + LogFlow(("remR3Load:\n")); + Assert(uPass == SSM_PASS_FINAL); NOREF(uPass); + + /* + * Validate version. + */ + if ( uVersion != REM_SAVED_STATE_VERSION + && uVersion != REM_SAVED_STATE_VERSION_VER1_6) + { + AssertMsgFailed(("remR3Load: Invalid version uVersion=%d!\n", uVersion)); + return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; + } + + /* + * Do a reset to be on the safe side... + */ + REMR3Reset(pVM); + + /* + * Ignore all ignorable notifications. + * (Not doing this will cause serious trouble.) + */ + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + /* + * Load the required CPU Env bits. + * (Not much because we're never in REM when doing the save.) + */ + pRem = &pVM->rem.s; + Assert(!pRem->fInREM); + SSMR3GetU32(pSSM, &pRem->Env.hflags); + if (uVersion == REM_SAVED_STATE_VERSION_VER1_6) + { + /* Redundant REM CPU state has to be loaded, but can be ignored. */ + CPUX86State_Ver16 temp; + SSMR3GetMem(pSSM, &temp, RT_UOFFSETOF(CPUX86State_Ver16, jmp_env)); + } + + rc = SSMR3GetU32(pSSM, &u32Sep); /* separator */ + if (RT_FAILURE(rc)) + return rc; + if (u32Sep != ~0U) + { + AssertMsgFailed(("u32Sep=%#x\n", u32Sep)); + return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; + } + + /* Remember if we've entered raw mode (vital for ring 1 checks in e.g. iret emulation). */ + SSMR3GetUInt(pSSM, &fRawRing0); + if (fRawRing0) + pRem->Env.state |= CPU_RAW_RING0; + + if (uVersion == REM_SAVED_STATE_VERSION_VER1_6) + { + /* + * Load the REM stuff. + */ + /** @todo r=bird: We should just drop all these items, restoring doesn't make + * sense. */ + rc = SSMR3GetU32(pSSM, (uint32_t *)&pRem->cInvalidatedPages); + if (RT_FAILURE(rc)) + return rc; + if (pRem->cInvalidatedPages > RT_ELEMENTS(pRem->aGCPtrInvalidatedPages)) + { + AssertMsgFailed(("cInvalidatedPages=%#x\n", pRem->cInvalidatedPages)); + return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; + } + for (i = 0; i < pRem->cInvalidatedPages; i++) + SSMR3GetGCPtr(pSSM, &pRem->aGCPtrInvalidatedPages[i]); + } + + rc = SSMR3GetUInt(pSSM, &pVM->rem.s.uStateLoadPendingInterrupt); + AssertRCReturn(rc, rc); + AssertLogRelMsgReturn( pVM->rem.s.uStateLoadPendingInterrupt == REM_NO_PENDING_IRQ + || pVM->rem.s.uStateLoadPendingInterrupt < 256, + ("uStateLoadPendingInterrupt=%#x\n", pVM->rem.s.uStateLoadPendingInterrupt), + VERR_SSM_UNEXPECTED_DATA); + + /* check the terminator. */ + rc = SSMR3GetU32(pSSM, &u32Sep); + if (RT_FAILURE(rc)) + return rc; + if (u32Sep != ~0U) + { + AssertMsgFailed(("u32Sep=%#x (term)\n", u32Sep)); + return VERR_SSM_DATA_UNIT_FORMAT_CHANGED; + } + + /* + * Get the CPUID features. + */ + PVMCPU pVCpu = VMMGetCpu(pVM); + CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext_features, &pVM->rem.s.Env.cpuid_features); + CPUMGetGuestCpuId(pVCpu, 0x80000001, 0, &u32Dummy, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext2_features); + + /* + * Stop ignoring ignorable notifications. + */ + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + + /* + * Sync the whole CPU state when executing code in the recompiler. + */ + for (i = 0; i < pVM->cCpus; i++) + { + PVMCPU pVCpu = &pVM->aCpus[i]; + CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL); + } + return VINF_SUCCESS; +} + + +/** + * @callback_method_impl{FNSSMINTLOADDONE, + * For pushing misdesigned pending-interrupt mess to TRPM where it belongs. } + */ +static DECLCALLBACK(int) remR3LoadDone(PVM pVM, PSSMHANDLE pSSM) +{ + if (pVM->rem.s.uStateLoadPendingInterrupt != REM_NO_PENDING_IRQ) + { + int rc = TRPMAssertTrap(&pVM->aCpus[0], pVM->rem.s.uStateLoadPendingInterrupt, TRPM_HARDWARE_INT); + AssertLogRelMsgReturn(rc, ("uStateLoadPendingInterrupt=%#x rc=%Rrc\n", pVM->rem.s.uStateLoadPendingInterrupt, rc), rc); + pVM->rem.s.uStateLoadPendingInterrupt = REM_NO_PENDING_IRQ; + } + return VINF_SUCCESS; +} + + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM_RUN + +/** + * Single steps an instruction in recompiled mode. + * + * Before calling this function the REM state needs to be in sync with + * the VM. Call REMR3State() to perform the sync. It's only necessary + * (and permitted) to sync at the first call to REMR3Step()/REMR3Run() + * and after calling REMR3StateBack(). + * + * @returns VBox status code. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + */ +REMR3DECL(int) REMR3Step(PVM pVM, PVMCPU pVCpu) +{ + int rc, interrupt_request; + RTGCPTR GCPtrPC; + bool fBp; + + /* + * Lock the REM - we don't wanna have anyone interrupting us + * while stepping - and enabled single stepping. We also ignore + * pending interrupts and suchlike. + */ + interrupt_request = pVM->rem.s.Env.interrupt_request; + Assert(!(interrupt_request & ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB | CPU_INTERRUPT_TIMER | CPU_INTERRUPT_EXTERNAL_HARD | CPU_INTERRUPT_EXTERNAL_EXIT | CPU_INTERRUPT_EXTERNAL_FLUSH_TLB | CPU_INTERRUPT_EXTERNAL_TIMER))); + pVM->rem.s.Env.interrupt_request = 0; + cpu_single_step(&pVM->rem.s.Env, 1); + + /* + * If we're standing at a breakpoint, that have to be disabled before we start stepping. + */ + GCPtrPC = pVM->rem.s.Env.eip + pVM->rem.s.Env.segs[R_CS].base; + fBp = !cpu_breakpoint_remove(&pVM->rem.s.Env, GCPtrPC, BP_GDB); + + /* + * Execute and handle the return code. + * We execute without enabling the cpu tick, so on success we'll + * just flip it on and off to make sure it moves + */ + rc = cpu_exec(&pVM->rem.s.Env); + if (rc == EXCP_DEBUG) + { + TMR3NotifyResume(pVM, pVCpu); + TMR3NotifySuspend(pVM, pVCpu); + rc = VINF_EM_DBG_STEPPED; + } + else + { + switch (rc) + { + case EXCP_INTERRUPT: rc = VINF_SUCCESS; break; + case EXCP_HLT: + case EXCP_HALTED: rc = VINF_EM_HALT; break; + case EXCP_RC: + rc = pVM->rem.s.rc; + pVM->rem.s.rc = VERR_INTERNAL_ERROR; + break; + case EXCP_EXECUTE_RAW: + case EXCP_EXECUTE_HM: + /** @todo is it correct? No! */ + rc = VINF_SUCCESS; + break; + default: + AssertReleaseMsgFailed(("This really shouldn't happen, rc=%d!\n", rc)); + rc = VERR_INTERNAL_ERROR; + break; + } + } + + /* + * Restore the stuff we changed to prevent interruption. + * Unlock the REM. + */ + if (fBp) + { + int rc2 = cpu_breakpoint_insert(&pVM->rem.s.Env, GCPtrPC, BP_GDB, NULL); + Assert(rc2 == 0); NOREF(rc2); + } + cpu_single_step(&pVM->rem.s.Env, 0); + pVM->rem.s.Env.interrupt_request = interrupt_request; + + return rc; +} + + +/** + * Set a breakpoint using the REM facilities. + * + * @returns VBox status code. + * @param pVM The VM handle. + * @param Address The breakpoint address. + * @thread The emulation thread. + */ +REMR3DECL(int) REMR3BreakpointSet(PVM pVM, RTGCUINTPTR Address) +{ + VM_ASSERT_EMT(pVM); + if (!cpu_breakpoint_insert(&pVM->rem.s.Env, Address, BP_GDB, NULL)) + { + LogFlow(("REMR3BreakpointSet: Address=%RGv\n", Address)); + return VINF_SUCCESS; + } + LogFlow(("REMR3BreakpointSet: Address=%RGv - failed!\n", Address)); + return VERR_REM_NO_MORE_BP_SLOTS; +} + + +/** + * Clears a breakpoint set by REMR3BreakpointSet(). + * + * @returns VBox status code. + * @param pVM The VM handle. + * @param Address The breakpoint address. + * @thread The emulation thread. + */ +REMR3DECL(int) REMR3BreakpointClear(PVM pVM, RTGCUINTPTR Address) +{ + VM_ASSERT_EMT(pVM); + if (!cpu_breakpoint_remove(&pVM->rem.s.Env, Address, BP_GDB)) + { + LogFlow(("REMR3BreakpointClear: Address=%RGv\n", Address)); + return VINF_SUCCESS; + } + LogFlow(("REMR3BreakpointClear: Address=%RGv - not found!\n", Address)); + return VERR_REM_BP_NOT_FOUND; +} + + +/** + * Emulate an instruction. + * + * This function executes one instruction without letting anyone + * interrupt it. This is intended for being called while being in + * raw mode and thus will take care of all the state syncing between + * REM and the rest. + * + * @returns VBox status code. + * @param pVM VM handle. + * @param pVCpu VMCPU Handle. + */ +REMR3DECL(int) REMR3EmulateInstruction(PVM pVM, PVMCPU pVCpu) +{ + bool fFlushTBs; + + int rc, rc2; + Log2(("REMR3EmulateInstruction: (cs:eip=%04x:%08x)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestEIP(pVCpu))); + + /* Make sure this flag is set; we might never execute remR3CanExecuteRaw in the AMD-V case. + * CPU_RAW_HM makes sure we never execute interrupt handlers in the recompiler. + */ + if (!VM_IS_RAW_MODE_ENABLED(pVM)) + pVM->rem.s.Env.state |= CPU_RAW_HM; + + /* Skip the TB flush as that's rather expensive and not necessary for single instruction emulation. */ + fFlushTBs = pVM->rem.s.fFlushTBs; + pVM->rem.s.fFlushTBs = false; + + /* + * Sync the state and enable single instruction / single stepping. + */ + rc = REMR3State(pVM, pVCpu); + pVM->rem.s.fFlushTBs = fFlushTBs; + if (RT_SUCCESS(rc)) + { + int interrupt_request = pVM->rem.s.Env.interrupt_request; + Assert(!( interrupt_request + & ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB | CPU_INTERRUPT_TIMER | CPU_INTERRUPT_EXTERNAL_HARD + | CPU_INTERRUPT_EXTERNAL_EXIT | CPU_INTERRUPT_EXTERNAL_FLUSH_TLB | CPU_INTERRUPT_EXTERNAL_TIMER + | CPU_INTERRUPT_EXTERNAL_DMA))); +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + cpu_single_step(&pVM->rem.s.Env, 0); +#endif + Assert(!pVM->rem.s.Env.singlestep_enabled); + + /* + * Now we set the execute single instruction flag and enter the cpu_exec loop. + */ + TMNotifyStartOfExecution(pVCpu); + pVM->rem.s.Env.interrupt_request = CPU_INTERRUPT_SINGLE_INSTR; + rc = cpu_exec(&pVM->rem.s.Env); + TMNotifyEndOfExecution(pVCpu); + switch (rc) + { + /* + * Executed without anything out of the way happening. + */ + case EXCP_SINGLE_INSTR: + rc = VINF_EM_RESCHEDULE; + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_SINGLE_INSTR\n")); + break; + + /* + * If we take a trap or start servicing a pending interrupt, we might end up here. + * (Timer thread or some other thread wishing EMT's attention.) + */ + case EXCP_INTERRUPT: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_INTERRUPT\n")); + rc = VINF_EM_RESCHEDULE; + break; + + /* + * Single step, we assume! + * If there was a breakpoint there we're fucked now. + */ + case EXCP_DEBUG: + if (pVM->rem.s.Env.watchpoint_hit) + { + /** @todo deal with watchpoints */ + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_DEBUG rc=%Rrc !watchpoint_hit!\n", rc)); + rc = VINF_EM_DBG_BREAKPOINT; + } + else + { + CPUBreakpoint *pBP; + RTGCPTR GCPtrPC = pVM->rem.s.Env.eip + pVM->rem.s.Env.segs[R_CS].base; + QTAILQ_FOREACH(pBP, &pVM->rem.s.Env.breakpoints, entry) + if (pBP->pc == GCPtrPC) + break; + rc = pBP ? VINF_EM_DBG_BREAKPOINT : VINF_EM_DBG_STEPPED; + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_DEBUG rc=%Rrc pBP=%p GCPtrPC=%RGv\n", rc, pBP, GCPtrPC)); + } + break; + + /* + * hlt instruction. + */ + case EXCP_HLT: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_HLT\n")); + rc = VINF_EM_HALT; + break; + + /* + * The VM has halted. + */ + case EXCP_HALTED: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_HALTED\n")); + rc = VINF_EM_HALT; + break; + + /* + * Switch to RAW-mode. + */ + case EXCP_EXECUTE_RAW: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_EXECUTE_RAW\n")); + rc = VINF_EM_RESCHEDULE_RAW; + break; + + /* + * Switch to hardware accelerated RAW-mode. + */ + case EXCP_EXECUTE_HM: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_EXECUTE_HM\n")); + rc = VINF_EM_RESCHEDULE_HM; + break; + + /* + * An EM RC was raised (VMR3Reset/Suspend/PowerOff/some-fatal-error). + */ + case EXCP_RC: + Log2(("REMR3EmulateInstruction: cpu_exec -> EXCP_RC\n")); + rc = pVM->rem.s.rc; + pVM->rem.s.rc = VERR_INTERNAL_ERROR; + break; + + /* + * Figure out the rest when they arrive.... + */ + default: + AssertMsgFailed(("rc=%d\n", rc)); + Log2(("REMR3EmulateInstruction: cpu_exec -> %d\n", rc)); + rc = VINF_EM_RESCHEDULE; + break; + } + + /* + * Switch back the state. + */ + pVM->rem.s.Env.interrupt_request = interrupt_request; + rc2 = REMR3StateBack(pVM, pVCpu); + AssertRC(rc2); + } + + Log2(("REMR3EmulateInstruction: returns %Rrc (cs:eip=%04x:%RGv)\n", + rc, pVM->rem.s.Env.segs[R_CS].selector, (RTGCPTR)pVM->rem.s.Env.eip)); + return rc; +} + + +/** + * Used by REMR3Run to handle the case where CPU_EMULATE_SINGLE_STEP is set. + * + * @returns VBox status code. + * + * @param pVM The VM handle. + * @param pVCpu The Virtual CPU handle. + */ +static int remR3RunLoggingStep(PVM pVM, PVMCPU pVCpu) +{ + int rc; + + Assert(pVM->rem.s.fInREM); +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + cpu_single_step(&pVM->rem.s.Env, 1); +#else + Assert(!pVM->rem.s.Env.singlestep_enabled); +#endif + + /* + * Now we set the execute single instruction flag and enter the cpu_exec loop. + */ + for (;;) + { + char szBuf[256]; + + /* + * Log the current registers state and instruction. + */ + remR3StateUpdate(pVM, pVCpu); + DBGFR3Info(pVM->pUVM, "cpumguest", NULL, NULL); + szBuf[0] = '\0'; + rc = DBGFR3DisasInstrEx(pVM->pUVM, + pVCpu->idCpu, + 0, /* Sel */ 0, /* GCPtr */ + DBGF_DISAS_FLAGS_CURRENT_GUEST | DBGF_DISAS_FLAGS_DEFAULT_MODE, + szBuf, + sizeof(szBuf), + NULL); + if (RT_FAILURE(rc)) + RTStrPrintf(szBuf, sizeof(szBuf), "DBGFR3DisasInstrEx failed with rc=%Rrc\n", rc); + RTLogPrintf("CPU%d: %s\n", pVCpu->idCpu, szBuf); + + /* + * Execute the instruction. + */ + TMNotifyStartOfExecution(pVCpu); + + if ( pVM->rem.s.Env.exception_index < 0 + || pVM->rem.s.Env.exception_index > 256) + pVM->rem.s.Env.exception_index = -1; /** @todo We need to do similar stuff elsewhere, I think. */ + +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + pVM->rem.s.Env.interrupt_request = 0; +#else + pVM->rem.s.Env.interrupt_request = CPU_INTERRUPT_SINGLE_INSTR; +#endif + if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_UPDATE_APIC | VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)) + pVM->rem.s.Env.interrupt_request |= CPU_INTERRUPT_HARD; + RTLogPrintf("remR3RunLoggingStep: interrupt_request=%#x halted=%d exception_index=%#x\n", + pVM->rem.s.Env.interrupt_request, + pVM->rem.s.Env.halted, + pVM->rem.s.Env.exception_index + ); + + rc = cpu_exec(&pVM->rem.s.Env); + + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> %#x interrupt_request=%#x halted=%d exception_index=%#x\n", rc, + pVM->rem.s.Env.interrupt_request, + pVM->rem.s.Env.halted, + pVM->rem.s.Env.exception_index + ); + + TMNotifyEndOfExecution(pVCpu); + + switch (rc) + { +#ifndef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + /* + * The normal exit. + */ + case EXCP_SINGLE_INSTR: + if ( !VM_FF_IS_ANY_SET(pVM, VM_FF_ALL_REM_MASK) + && !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_ALL_REM_MASK)) + continue; + RTLogPrintf("remR3RunLoggingStep: rc=VINF_SUCCESS w/ FFs (%#x/%#RX64)\n", + pVM->fGlobalForcedActions, (uint64_t)pVCpu->fLocalForcedActions); + rc = VINF_SUCCESS; + break; + +#else + /* + * The normal exit, check for breakpoints at PC just to be sure. + */ +#endif + case EXCP_DEBUG: + if (pVM->rem.s.Env.watchpoint_hit) + { + /** @todo deal with watchpoints */ + Log2(("remR3RunLoggingStep: cpu_exec -> EXCP_DEBUG rc=%Rrc !watchpoint_hit!\n", rc)); + rc = VINF_EM_DBG_BREAKPOINT; + } + else + { + CPUBreakpoint *pBP; + RTGCPTR GCPtrPC = pVM->rem.s.Env.eip + pVM->rem.s.Env.segs[R_CS].base; + QTAILQ_FOREACH(pBP, &pVM->rem.s.Env.breakpoints, entry) + if (pBP->pc == GCPtrPC) + break; + rc = pBP ? VINF_EM_DBG_BREAKPOINT : VINF_EM_DBG_STEPPED; + Log2(("remR3RunLoggingStep: cpu_exec -> EXCP_DEBUG rc=%Rrc pBP=%p GCPtrPC=%RGv\n", rc, pBP, GCPtrPC)); + } +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + if (rc == VINF_EM_DBG_STEPPED) + { + if ( !VM_FF_IS_ANY_SET(pVM, VM_FF_ALL_REM_MASK) + && !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_ALL_REM_MASK)) + continue; + + RTLogPrintf("remR3RunLoggingStep: rc=VINF_SUCCESS w/ FFs (%#x/%#RX64)\n", + pVM->fGlobalForcedActions, (uint64_t)pVCpu->fLocalForcedActions); + rc = VINF_SUCCESS; + } +#endif + break; + + /* + * If we take a trap or start servicing a pending interrupt, we might end up here. + * (Timer thread or some other thread wishing EMT's attention.) + */ + case EXCP_INTERRUPT: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_INTERRUPT rc=VINF_SUCCESS\n"); + rc = VINF_SUCCESS; + break; + + /* + * hlt instruction. + */ + case EXCP_HLT: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_HLT rc=VINF_EM_HALT\n"); + rc = VINF_EM_HALT; + break; + + /* + * The VM has halted. + */ + case EXCP_HALTED: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_HALTED rc=VINF_EM_HALT\n"); + rc = VINF_EM_HALT; + break; + + /* + * Switch to RAW-mode. + */ + case EXCP_EXECUTE_RAW: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_EXECUTE_RAW rc=VINF_EM_RESCHEDULE_RAW\n"); + rc = VINF_EM_RESCHEDULE_RAW; + break; + + /* + * Switch to hardware accelerated RAW-mode. + */ + case EXCP_EXECUTE_HM: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_EXECUTE_HM rc=VINF_EM_RESCHEDULE_HM\n"); + rc = VINF_EM_RESCHEDULE_HM; + break; + + /* + * An EM RC was raised (VMR3Reset/Suspend/PowerOff/some-fatal-error). + */ + case EXCP_RC: + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> EXCP_RC rc=%Rrc\n", pVM->rem.s.rc); + rc = pVM->rem.s.rc; + pVM->rem.s.rc = VERR_INTERNAL_ERROR; + break; + + /* + * Figure out the rest when they arrive.... + */ + default: + AssertMsgFailed(("rc=%d\n", rc)); + RTLogPrintf("remR3RunLoggingStep: cpu_exec -> %d rc=VINF_EM_RESCHEDULE\n", rc); + rc = VINF_EM_RESCHEDULE; + break; + } + break; + } + +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING +// cpu_single_step(&pVM->rem.s.Env, 0); +#else + pVM->rem.s.Env.interrupt_request &= ~(CPU_INTERRUPT_SINGLE_INSTR | CPU_INTERRUPT_SINGLE_INSTR_IN_FLIGHT); +#endif + return rc; +} + + +/** + * Runs code in recompiled mode. + * + * Before calling this function the REM state needs to be in sync with + * the VM. Call REMR3State() to perform the sync. It's only necessary + * (and permitted) to sync at the first call to REMR3Step()/REMR3Run() + * and after calling REMR3StateBack(). + * + * @returns VBox status code. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + */ +REMR3DECL(int) REMR3Run(PVM pVM, PVMCPU pVCpu) +{ + int rc; + + if (RT_UNLIKELY(pVM->rem.s.Env.state & CPU_EMULATE_SINGLE_STEP)) + return remR3RunLoggingStep(pVM, pVCpu); + + Assert(pVM->rem.s.fInREM); + Log2(("REMR3Run: (cs:eip=%04x:%RGv)\n", pVM->rem.s.Env.segs[R_CS].selector, (RTGCPTR)pVM->rem.s.Env.eip)); + + TMNotifyStartOfExecution(pVCpu); + rc = cpu_exec(&pVM->rem.s.Env); + TMNotifyEndOfExecution(pVCpu); + switch (rc) + { + /* + * This happens when the execution was interrupted + * by an external event, like pending timers. + */ + case EXCP_INTERRUPT: + Log2(("REMR3Run: cpu_exec -> EXCP_INTERRUPT\n")); + rc = VINF_SUCCESS; + break; + + /* + * hlt instruction. + */ + case EXCP_HLT: + Log2(("REMR3Run: cpu_exec -> EXCP_HLT\n")); + rc = VINF_EM_HALT; + break; + + /* + * The VM has halted. + */ + case EXCP_HALTED: + Log2(("REMR3Run: cpu_exec -> EXCP_HALTED\n")); + rc = VINF_EM_HALT; + break; + + /* + * Breakpoint/single step. + */ + case EXCP_DEBUG: + if (pVM->rem.s.Env.watchpoint_hit) + { + /** @todo deal with watchpoints */ + Log2(("REMR3Run: cpu_exec -> EXCP_DEBUG rc=%Rrc !watchpoint_hit!\n", rc)); + rc = VINF_EM_DBG_BREAKPOINT; + } + else + { + CPUBreakpoint *pBP; + RTGCPTR GCPtrPC = pVM->rem.s.Env.eip + pVM->rem.s.Env.segs[R_CS].base; + QTAILQ_FOREACH(pBP, &pVM->rem.s.Env.breakpoints, entry) + if (pBP->pc == GCPtrPC) + break; + rc = pBP ? VINF_EM_DBG_BREAKPOINT : VINF_EM_DBG_STEPPED; + Log2(("REMR3Run: cpu_exec -> EXCP_DEBUG rc=%Rrc pBP=%p GCPtrPC=%RGv\n", rc, pBP, GCPtrPC)); + } + break; + + /* + * Switch to RAW-mode. + */ + case EXCP_EXECUTE_RAW: + Log2(("REMR3Run: cpu_exec -> EXCP_EXECUTE_RAW pc=%RGv\n", pVM->rem.s.Env.eip)); + rc = VINF_EM_RESCHEDULE_RAW; + break; + + /* + * Switch to hardware accelerated RAW-mode. + */ + case EXCP_EXECUTE_HM: + Log2(("REMR3Run: cpu_exec -> EXCP_EXECUTE_HM\n")); + rc = VINF_EM_RESCHEDULE_HM; + break; + + /* + * An EM RC was raised (VMR3Reset/Suspend/PowerOff/some-fatal-error). + */ + case EXCP_RC: + Log2(("REMR3Run: cpu_exec -> EXCP_RC rc=%Rrc\n", pVM->rem.s.rc)); + rc = pVM->rem.s.rc; + pVM->rem.s.rc = VERR_INTERNAL_ERROR; + break; + + /* + * Figure out the rest when they arrive.... + */ + default: + AssertMsgFailed(("rc=%d\n", rc)); + Log2(("REMR3Run: cpu_exec -> %d\n", rc)); + rc = VINF_SUCCESS; + break; + } + + Log2(("REMR3Run: returns %Rrc (cs:eip=%04x:%RGv)\n", rc, pVM->rem.s.Env.segs[R_CS].selector, (RTGCPTR)pVM->rem.s.Env.eip)); + return rc; +} + + +/** + * Check if the cpu state is suitable for Raw execution. + * + * @returns true if RAW/HWACC mode is ok, false if we should stay in REM. + * + * @param env The CPU env struct. + * @param eip The EIP to check this for (might differ from env->eip). + * @param fFlags hflags OR'ed with IOPL, TF and VM from eflags. + * @param piException Stores EXCP_EXECUTE_RAW/HWACC in case raw mode is supported in this context + * + * @remark This function must be kept in perfect sync with the scheduler in EM.cpp! + */ +bool remR3CanExecuteRaw(CPUX86State *env, RTGCPTR eip, unsigned fFlags, int *piException) +{ + /* !!! THIS MUST BE IN SYNC WITH emR3Reschedule !!! */ + /* !!! THIS MUST BE IN SYNC WITH emR3Reschedule !!! */ + /* !!! THIS MUST BE IN SYNC WITH emR3Reschedule !!! */ + uint32_t u32CR0; + + /* Update counter. */ + env->pVM->rem.s.cCanExecuteRaw++; + + /* Never when single stepping+logging guest code. */ + if (env->state & CPU_EMULATE_SINGLE_STEP) + return false; + + if (!VM_IS_RAW_MODE_ENABLED(env->pVM)) + { +#ifdef RT_OS_WINDOWS + PCPUMCTX pCtx = alloca(sizeof(*pCtx)); +#else + CPUMCTX Ctx; + PCPUMCTX pCtx = &Ctx; +#endif + /** @todo NEM: scheduling. */ + + env->state |= CPU_RAW_HM; + + /* + * The simple check first... + */ + if (!EMIsHwVirtExecutionEnabled(env->pVM)) + return false; + + /* + * Create partial context for HMCanExecuteGuest. + */ + pCtx->cr0 = env->cr[0]; + pCtx->cr3 = env->cr[3]; + pCtx->cr4 = env->cr[4]; + + pCtx->tr.Sel = env->tr.selector; + pCtx->tr.ValidSel = env->tr.selector; + pCtx->tr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->tr.u64Base = env->tr.base; + pCtx->tr.u32Limit = env->tr.limit; + pCtx->tr.Attr.u = (env->tr.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->ldtr.Sel = env->ldt.selector; + pCtx->ldtr.ValidSel = env->ldt.selector; + pCtx->ldtr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->ldtr.u64Base = env->ldt.base; + pCtx->ldtr.u32Limit = env->ldt.limit; + pCtx->ldtr.Attr.u = (env->ldt.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->idtr.cbIdt = env->idt.limit; + pCtx->idtr.pIdt = env->idt.base; + + pCtx->gdtr.cbGdt = env->gdt.limit; + pCtx->gdtr.pGdt = env->gdt.base; + + pCtx->rsp = env->regs[R_ESP]; + pCtx->rip = env->eip; + + pCtx->eflags.u32 = env->eflags; + + pCtx->cs.Sel = env->segs[R_CS].selector; + pCtx->cs.ValidSel = env->segs[R_CS].selector; + pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->cs.u64Base = env->segs[R_CS].base; + pCtx->cs.u32Limit = env->segs[R_CS].limit; + pCtx->cs.Attr.u = (env->segs[R_CS].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->ds.Sel = env->segs[R_DS].selector; + pCtx->ds.ValidSel = env->segs[R_DS].selector; + pCtx->ds.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->ds.u64Base = env->segs[R_DS].base; + pCtx->ds.u32Limit = env->segs[R_DS].limit; + pCtx->ds.Attr.u = (env->segs[R_DS].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->es.Sel = env->segs[R_ES].selector; + pCtx->es.ValidSel = env->segs[R_ES].selector; + pCtx->es.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->es.u64Base = env->segs[R_ES].base; + pCtx->es.u32Limit = env->segs[R_ES].limit; + pCtx->es.Attr.u = (env->segs[R_ES].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->fs.Sel = env->segs[R_FS].selector; + pCtx->fs.ValidSel = env->segs[R_FS].selector; + pCtx->fs.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->fs.u64Base = env->segs[R_FS].base; + pCtx->fs.u32Limit = env->segs[R_FS].limit; + pCtx->fs.Attr.u = (env->segs[R_FS].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->gs.Sel = env->segs[R_GS].selector; + pCtx->gs.ValidSel = env->segs[R_GS].selector; + pCtx->gs.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->gs.u64Base = env->segs[R_GS].base; + pCtx->gs.u32Limit = env->segs[R_GS].limit; + pCtx->gs.Attr.u = (env->segs[R_GS].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->ss.Sel = env->segs[R_SS].selector; + pCtx->ss.ValidSel = env->segs[R_SS].selector; + pCtx->ss.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->ss.u64Base = env->segs[R_SS].base; + pCtx->ss.u32Limit = env->segs[R_SS].limit; + pCtx->ss.Attr.u = (env->segs[R_SS].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + + pCtx->msrEFER = env->efer; + + /* + * Hardware accelerated mode: + * Typically only 32-bits protected mode, with paging enabled, code is allowed here. + */ + PVMCPU pVCpu = &env->pVM->aCpus[0]; + if (HMCanExecuteGuest(pVCpu, pCtx)) + { + *piException = EXCP_EXECUTE_HM; + return true; + } + return false; + } + + /* + * Here we only support 16 & 32 bits protected mode ring 3 code that has no IO privileges + * or 32 bits protected mode ring 0 code + * + * The tests are ordered by the likelihood of being true during normal execution. + */ + if (fFlags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK)) + { + STAM_COUNTER_INC(&gStatRefuseTFInhibit); + Log2(("raw mode refused: fFlags=%#x\n", fFlags)); + return false; + } + +#ifndef VBOX_RAW_V86 + if (fFlags & VM_MASK) { + STAM_COUNTER_INC(&gStatRefuseVM86); + Log2(("raw mode refused: VM_MASK\n")); + return false; + } +#endif + + if (env->state & CPU_EMULATE_SINGLE_INSTR) + { +#ifndef DEBUG_bird + Log2(("raw mode refused: CPU_EMULATE_SINGLE_INSTR\n")); +#endif + return false; + } + + if (env->singlestep_enabled) + { + //Log2(("raw mode refused: Single step\n")); + return false; + } + + if (!QTAILQ_EMPTY(&env->breakpoints)) + { + //Log2(("raw mode refused: Breakpoints\n")); + return false; + } + + if (!QTAILQ_EMPTY(&env->watchpoints)) + { + //Log2(("raw mode refused: Watchpoints\n")); + return false; + } + + u32CR0 = env->cr[0]; + if ((u32CR0 & (X86_CR0_PG | X86_CR0_PE)) != (X86_CR0_PG | X86_CR0_PE)) + { + STAM_COUNTER_INC(&gStatRefusePaging); + //Log2(("raw mode refused: %s%s%s\n", (u32CR0 & X86_CR0_PG) ? "" : " !PG", (u32CR0 & X86_CR0_PE) ? "" : " !PE", (u32CR0 & X86_CR0_AM) ? "" : " !AM")); + return false; + } + + if (env->cr[4] & CR4_PAE_MASK) + { + if (!(env->cpuid_features & X86_CPUID_FEATURE_EDX_PAE)) + { + STAM_COUNTER_INC(&gStatRefusePAE); + return false; + } + } + + if (((fFlags >> HF_CPL_SHIFT) & 3) == 3) + { + if (!EMIsRawRing3Enabled(env->pVM)) + return false; + + if (!(env->eflags & IF_MASK)) + { + STAM_COUNTER_INC(&gStatRefuseIF0); + Log2(("raw mode refused: IF (RawR3)\n")); + return false; + } + + if (!(u32CR0 & CR0_WP_MASK) && EMIsRawRing0Enabled(env->pVM)) + { + STAM_COUNTER_INC(&gStatRefuseWP0); + Log2(("raw mode refused: CR0.WP + RawR0\n")); + return false; + } + } + else + { + if (!EMIsRawRing0Enabled(env->pVM)) + return false; + + // Let's start with pure 32 bits ring 0 code first + if ((fFlags & (HF_SS32_MASK | HF_CS32_MASK)) != (HF_SS32_MASK | HF_CS32_MASK)) + { + STAM_COUNTER_INC(&gStatRefuseCode16); + Log2(("raw r0 mode refused: HF_[S|C]S32_MASK fFlags=%#x\n", fFlags)); + return false; + } + + if (EMIsRawRing1Enabled(env->pVM)) + { + /* Only ring 0 and 1 supervisor code. */ + if (((fFlags >> HF_CPL_SHIFT) & 3) == 2) /* ring 1 code is moved into ring 2, so we can't support ring-2 in that case. */ + { + Log2(("raw r0 mode refused: CPL %d\n", (fFlags >> HF_CPL_SHIFT) & 3)); + return false; + } + } + /* Only R0. */ + else if (((fFlags >> HF_CPL_SHIFT) & 3) != 0) + { + STAM_COUNTER_INC(&gStatRefuseRing1or2); + Log2(("raw r0 mode refused: CPL %d\n", ((fFlags >> HF_CPL_SHIFT) & 3) )); + return false; + } + + if (!(u32CR0 & CR0_WP_MASK)) + { + STAM_COUNTER_INC(&gStatRefuseWP0); + Log2(("raw r0 mode refused: CR0.WP=0!\n")); + return false; + } + +#ifdef VBOX_WITH_RAW_MODE + if (PATMIsPatchGCAddr(env->pVM, eip)) + { + Log2(("raw r0 mode forced: patch code\n")); + *piException = EXCP_EXECUTE_RAW; + return true; + } +#endif + +#if !defined(VBOX_ALLOW_IF0) && !defined(VBOX_RUN_INTERRUPT_GATE_HANDLERS) + if (!(env->eflags & IF_MASK)) + { + STAM_COUNTER_INC(&gStatRefuseIF0); + ////Log2(("R0: IF=0 VIF=%d %08X\n", eip, *env->pVMeflags)); + //Log2(("RR0: Interrupts turned off; fall back to emulation\n")); + return false; + } +#endif + +#ifndef VBOX_WITH_RAW_RING1 + if (((env->eflags >> IOPL_SHIFT) & 3) != 0) + { + Log2(("raw r0 mode refused: IOPL %d\n", ((env->eflags >> IOPL_SHIFT) & 3))); + return false; + } +#endif + env->state |= CPU_RAW_RING0; + } + + /* + * Don't reschedule the first time we're called, because there might be + * special reasons why we're here that is not covered by the above checks. + */ + if (env->pVM->rem.s.cCanExecuteRaw == 1) + { + Log2(("raw mode refused: first scheduling\n")); + STAM_COUNTER_INC(&gStatRefuseCanExecute); + return false; + } + + /* + * Stale hidden selectors means raw-mode is unsafe (being very careful). + */ + if (env->segs[R_CS].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale CS (%#x)\n", env->segs[R_CS].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_CS]); + return false; + } + if (env->segs[R_SS].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale SS (%#x)\n", env->segs[R_SS].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_SS]); + return false; + } + if (env->segs[R_DS].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale DS (%#x)\n", env->segs[R_DS].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_DS]); + return false; + } + if (env->segs[R_ES].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale ES (%#x)\n", env->segs[R_ES].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_ES]); + return false; + } + if (env->segs[R_FS].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale FS (%#x)\n", env->segs[R_FS].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_FS]); + return false; + } + if (env->segs[R_GS].fVBoxFlags & CPUMSELREG_FLAGS_STALE) + { + Log2(("raw mode refused: stale GS (%#x)\n", env->segs[R_GS].selector)); + STAM_COUNTER_INC(&gaStatRefuseStale[R_GS]); + return false; + } + +/* Assert(env->pVCpu && PGMPhysIsA20Enabled(env->pVCpu));*/ + *piException = EXCP_EXECUTE_RAW; + return true; +} + + +#ifdef VBOX_WITH_RAW_MODE +/** + * Fetches a code byte. + * + * @returns Success indicator (bool) for ease of use. + * @param env The CPU environment structure. + * @param GCPtrInstr Where to fetch code. + * @param pu8Byte Where to store the byte on success + */ +bool remR3GetOpcode(CPUX86State *env, RTGCPTR GCPtrInstr, uint8_t *pu8Byte) +{ + int rc = PATMR3QueryOpcode(env->pVM, GCPtrInstr, pu8Byte); + if (RT_SUCCESS(rc)) + return true; + return false; +} +#endif /* VBOX_WITH_RAW_MODE */ + + +/** + * Flush (or invalidate if you like) page table/dir entry. + * + * (invlpg instruction; tlb_flush_page) + * + * @param env Pointer to cpu environment. + * @param GCPtr The virtual address which page table/dir entry should be invalidated. + */ +void remR3FlushPage(CPUX86State *env, RTGCPTR GCPtr) +{ + PVM pVM = env->pVM; + PCPUMCTX pCtx; + int rc; + + Assert(EMRemIsLockOwner(env->pVM)); + + /* + * When we're replaying invlpg instructions or restoring a saved + * state we disable this path. + */ + if (pVM->rem.s.fIgnoreInvlPg || pVM->rem.s.cIgnoreAll) + return; + LogFlow(("remR3FlushPage: GCPtr=%RGv\n", GCPtr)); + Assert(pVM->rem.s.fInREM || pVM->rem.s.fInStateSync); + + //RAWEx_ProfileStop(env, STATS_QEMU_TOTAL); + + /* + * Update the control registers before calling PGMFlushPage. + */ + pCtx = (PCPUMCTX)pVM->rem.s.pCtx; + Assert(pCtx); + pCtx->cr0 = env->cr[0]; + pCtx->cr3 = env->cr[3]; +#ifdef VBOX_WITH_RAW_MODE + if (((env->cr[4] ^ pCtx->cr4) & X86_CR4_VME) && VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(env->pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + pCtx->cr4 = env->cr[4]; + + /* + * Let PGM do the rest. + */ + Assert(env->pVCpu); + rc = PGMInvalidatePage(env->pVCpu, GCPtr); + if (RT_FAILURE(rc)) + { + AssertMsgFailed(("remR3FlushPage %RGv failed with %d!!\n", GCPtr, rc)); + VMCPU_FF_SET(env->pVCpu, VMCPU_FF_PGM_SYNC_CR3); + } + //RAWEx_ProfileStart(env, STATS_QEMU_TOTAL); +} + + +#ifndef REM_PHYS_ADDR_IN_TLB +/** Wrapper for PGMR3PhysTlbGCPhys2Ptr. */ +void *remR3TlbGCPhys2Ptr(CPUX86State *env1, target_ulong physAddr, int fWritable) +{ + void *pv; + int rc; + + + /* Address must be aligned enough to fiddle with lower bits */ + Assert((physAddr & 0x3) == 0); + /*AssertMsg((env1->a20_mask & physAddr) == physAddr, ("%llx\n", (uint64_t)physAddr));*/ + + STAM_PROFILE_START(&gStatGCPhys2HCVirt, a); + rc = PGMR3PhysTlbGCPhys2Ptr(env1->pVM, physAddr, true /*fWritable*/, &pv); + STAM_PROFILE_STOP(&gStatGCPhys2HCVirt, a); + Assert( rc == VINF_SUCCESS + || rc == VINF_PGM_PHYS_TLB_CATCH_WRITE + || rc == VERR_PGM_PHYS_TLB_CATCH_ALL + || rc == VERR_PGM_PHYS_TLB_UNASSIGNED); + if (RT_FAILURE(rc)) + return (void *)1; + if (rc == VINF_PGM_PHYS_TLB_CATCH_WRITE) + return (void *)((uintptr_t)pv | 2); + return pv; +} +#endif /* REM_PHYS_ADDR_IN_TLB */ + + +/** + * Called from tlb_protect_code in order to write monitor a code page. + * + * @param env Pointer to the CPU environment. + * @param GCPtr Code page to monitor + */ +void remR3ProtectCode(CPUX86State *env, RTGCPTR GCPtr) +{ +#ifdef VBOX_REM_PROTECT_PAGES_FROM_SMC + Assert(env->pVM->rem.s.fInREM); + if ( (env->cr[0] & X86_CR0_PG) /* paging must be enabled */ + && !(env->state & CPU_EMULATE_SINGLE_INSTR) /* ignore during single instruction execution */ + && (((env->hflags >> HF_CPL_SHIFT) & 3) == 0) /* supervisor mode only */ + && !(env->eflags & VM_MASK) /* no V86 mode */ + && VM_IS_RAW_MODE_ENABLED(env->pVM)) + CSAMR3MonitorPage(env->pVM, GCPtr, CSAM_TAG_REM); +#endif +} + + +/** + * Called from tlb_unprotect_code in order to clear write monitoring for a code page. + * + * @param env Pointer to the CPU environment. + * @param GCPtr Code page to monitor + */ +void remR3UnprotectCode(CPUX86State *env, RTGCPTR GCPtr) +{ + Assert(env->pVM->rem.s.fInREM); +#ifdef VBOX_REM_PROTECT_PAGES_FROM_SMC + if ( (env->cr[0] & X86_CR0_PG) /* paging must be enabled */ + && !(env->state & CPU_EMULATE_SINGLE_INSTR) /* ignore during single instruction execution */ + && (((env->hflags >> HF_CPL_SHIFT) & 3) == 0) /* supervisor mode only */ + && !(env->eflags & VM_MASK) /* no V86 mode */ + && VM_IS_RAW_MODE_ENABLED(env->pVM)) + CSAMR3UnmonitorPage(env->pVM, GCPtr, CSAM_TAG_REM); +#endif +} + + +/** + * Called when the CPU is initialized, any of the CRx registers are changed or + * when the A20 line is modified. + * + * @param env Pointer to the CPU environment. + * @param fGlobal Set if the flush is global. + */ +void remR3FlushTLB(CPUX86State *env, bool fGlobal) +{ + PVM pVM = env->pVM; + PCPUMCTX pCtx; + Assert(EMRemIsLockOwner(pVM)); + + /* + * When we're replaying invlpg instructions or restoring a saved + * state we disable this path. + */ + if (pVM->rem.s.fIgnoreCR3Load || pVM->rem.s.cIgnoreAll) + return; + Assert(pVM->rem.s.fInREM); + + /* + * The caller doesn't check cr4, so we have to do that for ourselves. + */ + if (!fGlobal && !(env->cr[4] & X86_CR4_PGE)) + fGlobal = true; + Log(("remR3FlushTLB: CR0=%08RX64 CR3=%08RX64 CR4=%08RX64 %s\n", (uint64_t)env->cr[0], (uint64_t)env->cr[3], (uint64_t)env->cr[4], fGlobal ? " global" : "")); + + /* + * Update the control registers before calling PGMR3FlushTLB. + */ + pCtx = (PCPUMCTX)pVM->rem.s.pCtx; + Assert(pCtx); + pCtx->cr0 = env->cr[0]; + pCtx->cr3 = env->cr[3]; +#ifdef VBOX_WITH_RAW_MODE + if (((env->cr[4] ^ pCtx->cr4) & X86_CR4_VME) && VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(env->pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + pCtx->cr4 = env->cr[4]; + + /* + * Let PGM do the rest. + */ + Assert(env->pVCpu); + PGMFlushTLB(env->pVCpu, env->cr[3], fGlobal); +} + + +/** + * Called when any of the cr0, cr4 or efer registers is updated. + * + * @param env Pointer to the CPU environment. + */ +void remR3ChangeCpuMode(CPUX86State *env) +{ + PVM pVM = env->pVM; + uint64_t efer; + PCPUMCTX pCtx; + int rc; + + /* + * When we're replaying loads or restoring a saved + * state this path is disabled. + */ + if (pVM->rem.s.fIgnoreCpuMode || pVM->rem.s.cIgnoreAll) + return; + Assert(pVM->rem.s.fInREM); + + pCtx = (PCPUMCTX)pVM->rem.s.pCtx; + Assert(pCtx); + + /* + * Notify PGM about WP0 being enabled (like CPUSetGuestCR0 does). + */ + if (((env->cr[0] ^ pCtx->cr0) & X86_CR0_WP) && (env->cr[0] & X86_CR0_WP)) + PGMCr0WpEnabled(env->pVCpu); + + /* + * Update the control registers before calling PGMChangeMode() + * as it may need to map whatever cr3 is pointing to. + */ + pCtx->cr0 = env->cr[0]; + pCtx->cr3 = env->cr[3]; +#ifdef VBOX_WITH_RAW_MODE + if (((env->cr[4] ^ pCtx->cr4) & X86_CR4_VME) && VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(env->pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + pCtx->cr4 = env->cr[4]; +#ifdef TARGET_X86_64 + efer = env->efer; + pCtx->msrEFER = efer; +#else + efer = 0; +#endif + Assert(env->pVCpu); + rc = PGMChangeMode(env->pVCpu, env->cr[0], env->cr[4], efer); + if (rc != VINF_SUCCESS) + { + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("PGMChangeMode(, %RX64, %RX64, %RX64) -> %Rrc -> remR3RaiseRC\n", env->cr[0], env->cr[4], efer, rc)); + remR3RaiseRC(env->pVM, rc); + } + else + cpu_abort(env, "PGMChangeMode(, %RX64, %RX64, %RX64) -> %Rrc\n", env->cr[0], env->cr[4], efer, rc); + } +} + + +/** + * Called from compiled code to run dma. + * + * @param env Pointer to the CPU environment. + */ +void remR3DmaRun(CPUX86State *env) +{ + remR3ProfileStop(STATS_QEMU_RUN_EMULATED_CODE); + PDMR3DmaRun(env->pVM); + remR3ProfileStart(STATS_QEMU_RUN_EMULATED_CODE); +} + + +/** + * Called from compiled code to schedule pending timers in VMM + * + * @param env Pointer to the CPU environment. + */ +void remR3TimersRun(CPUX86State *env) +{ + LogFlow(("remR3TimersRun:\n")); + LogIt(RTLOGGRPFLAGS_LEVEL_5, LOG_GROUP_TM, ("remR3TimersRun\n")); + remR3ProfileStop(STATS_QEMU_RUN_EMULATED_CODE); + remR3ProfileStart(STATS_QEMU_RUN_TIMERS); + TMR3TimerQueuesDo(env->pVM); + remR3ProfileStop(STATS_QEMU_RUN_TIMERS); + remR3ProfileStart(STATS_QEMU_RUN_EMULATED_CODE); +} + + +/** + * Record trap occurrence + * + * @returns VBox status code + * @param env Pointer to the CPU environment. + * @param uTrap Trap nr + * @param uErrorCode Error code + * @param pvNextEIP Next EIP + */ +int remR3NotifyTrap(CPUX86State *env, uint32_t uTrap, uint32_t uErrorCode, RTGCPTR pvNextEIP) +{ + PVM pVM = env->pVM; +#ifdef VBOX_WITH_STATISTICS + static STAMCOUNTER s_aStatTrap[255]; + static bool s_aRegisters[RT_ELEMENTS(s_aStatTrap)]; +#endif + +#ifdef VBOX_WITH_STATISTICS + if (uTrap < 255) + { + if (!s_aRegisters[uTrap]) + { + char szStatName[64]; + s_aRegisters[uTrap] = true; + RTStrPrintf(szStatName, sizeof(szStatName), "/REM/Trap/0x%02X", uTrap); + STAM_REG(env->pVM, &s_aStatTrap[uTrap], STAMTYPE_COUNTER, szStatName, STAMUNIT_OCCURENCES, "Trap stats."); + } + STAM_COUNTER_INC(&s_aStatTrap[uTrap]); + } +#endif + Log(("remR3NotifyTrap: uTrap=%x error=%x next_eip=%RGv eip=%RGv cr2=%RGv\n", uTrap, uErrorCode, pvNextEIP, (RTGCPTR)env->eip, (RTGCPTR)env->cr[2])); + if( uTrap < 0x20 + && (env->cr[0] & X86_CR0_PE) + && !(env->eflags & X86_EFL_VM)) + { +#ifdef DEBUG + remR3DisasInstr(env, 1, "remR3NotifyTrap: "); +#endif + if(pVM->rem.s.uPendingException == uTrap && ++pVM->rem.s.cPendingExceptions > 512) + { + LogRel(("VERR_REM_TOO_MANY_TRAPS -> uTrap=%x error=%x next_eip=%RGv eip=%RGv cr2=%RGv\n", uTrap, uErrorCode, pvNextEIP, (RTGCPTR)env->eip, (RTGCPTR)env->cr[2])); + remR3RaiseRC(env->pVM, VERR_REM_TOO_MANY_TRAPS); + return VERR_REM_TOO_MANY_TRAPS; + } + if(pVM->rem.s.uPendingException != uTrap || pVM->rem.s.uPendingExcptEIP != env->eip || pVM->rem.s.uPendingExcptCR2 != env->cr[2]) + { + Log(("remR3NotifyTrap: uTrap=%#x set as pending\n", uTrap)); + pVM->rem.s.cPendingExceptions = 1; + } + pVM->rem.s.uPendingException = uTrap; + pVM->rem.s.uPendingExcptEIP = env->eip; + pVM->rem.s.uPendingExcptCR2 = env->cr[2]; + } + else + { + pVM->rem.s.cPendingExceptions = 0; + pVM->rem.s.uPendingException = uTrap; + pVM->rem.s.uPendingExcptEIP = env->eip; + pVM->rem.s.uPendingExcptCR2 = env->cr[2]; + } + return VINF_SUCCESS; +} + + +/* + * Clear current active trap + * + * @param pVM VM Handle. + */ +void remR3TrapClear(PVM pVM) +{ + pVM->rem.s.cPendingExceptions = 0; + pVM->rem.s.uPendingException = 0; + pVM->rem.s.uPendingExcptEIP = 0; + pVM->rem.s.uPendingExcptCR2 = 0; +} + + +/* + * Record previous call instruction addresses + * + * @param env Pointer to the CPU environment. + */ +void remR3RecordCall(CPUX86State *env) +{ +#ifdef VBOX_WITH_RAW_MODE + CSAMR3RecordCallAddress(env->pVM, env->eip); +#endif +} + + +/** + * Syncs the internal REM state with the VM. + * + * This must be called before REMR3Run() is invoked whenever when the REM + * state is not up to date. Calling it several times in a row is not + * permitted. + * + * @returns VBox status code. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + * + * @remark The caller has to check for important FFs before calling REMR3Run. REMR3State will + * no do this since the majority of the callers don't want any unnecessary of events + * pending that would immediately interrupt execution. + */ +REMR3DECL(int) REMR3State(PVM pVM, PVMCPU pVCpu) +{ + register const CPUMCTX *pCtx; + register unsigned fFlags; + unsigned i; + TRPMEVENT enmType; + uint8_t u8TrapNo; + uint32_t uCpl; + int rc; + + STAM_PROFILE_START(&pVM->rem.s.StatsState, a); + Log2(("REMR3State:\n")); + + pVM->rem.s.Env.pVCpu = pVCpu; + pCtx = pVM->rem.s.pCtx = CPUMQueryGuestCtxPtr(pVCpu); + + Assert(pCtx); + if ( CPUMIsGuestInSvmNestedHwVirtMode(pCtx) + || CPUMIsGuestInVmxNonRootMode(pCtx)) + { + AssertMsgFailed(("Bad scheduling - can't exec. nested-guest in REM!\n")); + return VERR_EM_CANNOT_EXEC_GUEST; + } + + Assert(!pVM->rem.s.fInREM); + pVM->rem.s.fInStateSync = true; + + /* + * If we have to flush TBs, do that immediately. + */ + if (pVM->rem.s.fFlushTBs) + { + STAM_COUNTER_INC(&gStatFlushTBs); + tb_flush(&pVM->rem.s.Env); + pVM->rem.s.fFlushTBs = false; + } + + /* + * Copy the registers which require no special handling. + */ +#ifdef TARGET_X86_64 + /* Note that the high dwords of 64 bits registers are undefined in 32 bits mode and are undefined after a mode change. */ + Assert(R_EAX == 0); + pVM->rem.s.Env.regs[R_EAX] = pCtx->rax; + Assert(R_ECX == 1); + pVM->rem.s.Env.regs[R_ECX] = pCtx->rcx; + Assert(R_EDX == 2); + pVM->rem.s.Env.regs[R_EDX] = pCtx->rdx; + Assert(R_EBX == 3); + pVM->rem.s.Env.regs[R_EBX] = pCtx->rbx; + Assert(R_ESP == 4); + pVM->rem.s.Env.regs[R_ESP] = pCtx->rsp; + Assert(R_EBP == 5); + pVM->rem.s.Env.regs[R_EBP] = pCtx->rbp; + Assert(R_ESI == 6); + pVM->rem.s.Env.regs[R_ESI] = pCtx->rsi; + Assert(R_EDI == 7); + pVM->rem.s.Env.regs[R_EDI] = pCtx->rdi; + pVM->rem.s.Env.regs[8] = pCtx->r8; + pVM->rem.s.Env.regs[9] = pCtx->r9; + pVM->rem.s.Env.regs[10] = pCtx->r10; + pVM->rem.s.Env.regs[11] = pCtx->r11; + pVM->rem.s.Env.regs[12] = pCtx->r12; + pVM->rem.s.Env.regs[13] = pCtx->r13; + pVM->rem.s.Env.regs[14] = pCtx->r14; + pVM->rem.s.Env.regs[15] = pCtx->r15; + + pVM->rem.s.Env.eip = pCtx->rip; + + pVM->rem.s.Env.eflags = pCtx->rflags.u64; +#else + Assert(R_EAX == 0); + pVM->rem.s.Env.regs[R_EAX] = pCtx->eax; + Assert(R_ECX == 1); + pVM->rem.s.Env.regs[R_ECX] = pCtx->ecx; + Assert(R_EDX == 2); + pVM->rem.s.Env.regs[R_EDX] = pCtx->edx; + Assert(R_EBX == 3); + pVM->rem.s.Env.regs[R_EBX] = pCtx->ebx; + Assert(R_ESP == 4); + pVM->rem.s.Env.regs[R_ESP] = pCtx->esp; + Assert(R_EBP == 5); + pVM->rem.s.Env.regs[R_EBP] = pCtx->ebp; + Assert(R_ESI == 6); + pVM->rem.s.Env.regs[R_ESI] = pCtx->esi; + Assert(R_EDI == 7); + pVM->rem.s.Env.regs[R_EDI] = pCtx->edi; + pVM->rem.s.Env.eip = pCtx->eip; + + pVM->rem.s.Env.eflags = pCtx->eflags.u32; +#endif + + pVM->rem.s.Env.cr[2] = pCtx->cr2; + + /** @todo we could probably benefit from using a CPUM_CHANGED_DRx flag too! */ + for (i=0;i<8;i++) + pVM->rem.s.Env.dr[i] = pCtx->dr[i]; + +#ifdef HF_HALTED_MASK /** @todo remove me when we're up to date again. */ + /* + * Clear the halted hidden flag (the interrupt waking up the CPU can + * have been dispatched in raw mode). + */ + pVM->rem.s.Env.hflags &= ~HF_HALTED_MASK; +#endif + + /* + * Replay invlpg? Only if we're not flushing the TLB. + */ + fFlags = CPUMR3RemEnter(pVCpu, &uCpl); + LogFlow(("CPUMR3RemEnter %x %x\n", fFlags, uCpl)); + if (pVM->rem.s.cInvalidatedPages) + { + if (!(fFlags & CPUM_CHANGED_GLOBAL_TLB_FLUSH)) + { + RTUINT i; + + pVM->rem.s.fIgnoreCR3Load = true; + pVM->rem.s.fIgnoreInvlPg = true; + for (i = 0; i < pVM->rem.s.cInvalidatedPages; i++) + { + Log2(("REMR3State: invlpg %RGv\n", pVM->rem.s.aGCPtrInvalidatedPages[i])); + tlb_flush_page(&pVM->rem.s.Env, pVM->rem.s.aGCPtrInvalidatedPages[i]); + } + pVM->rem.s.fIgnoreInvlPg = false; + pVM->rem.s.fIgnoreCR3Load = false; + } + pVM->rem.s.cInvalidatedPages = 0; + } + + /* Replay notification changes. */ + REMR3ReplayHandlerNotifications(pVM); + + /* Update MSRs; before CRx registers! */ + pVM->rem.s.Env.efer = pCtx->msrEFER; + pVM->rem.s.Env.star = pCtx->msrSTAR; + pVM->rem.s.Env.pat = pCtx->msrPAT; +#ifdef TARGET_X86_64 + pVM->rem.s.Env.lstar = pCtx->msrLSTAR; + pVM->rem.s.Env.cstar = pCtx->msrCSTAR; + pVM->rem.s.Env.fmask = pCtx->msrSFMASK; + pVM->rem.s.Env.kernelgsbase = pCtx->msrKERNELGSBASE; + + /* Update the internal long mode activate flag according to the new EFER value. */ + if (pCtx->msrEFER & MSR_K6_EFER_LMA) + pVM->rem.s.Env.hflags |= HF_LMA_MASK; + else + pVM->rem.s.Env.hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); +#endif + + /* Update the inhibit IRQ mask. */ + pVM->rem.s.Env.hflags &= ~HF_INHIBIT_IRQ_MASK; + if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS)) + { + RTGCPTR InhibitPC = EMGetInhibitInterruptsPC(pVCpu); + if (InhibitPC == pCtx->rip) + pVM->rem.s.Env.hflags |= HF_INHIBIT_IRQ_MASK; + else + { + Log(("Clearing VMCPU_FF_INHIBIT_INTERRUPTS at %RGv - successor %RGv (REM#1)\n", (RTGCPTR)pCtx->rip, InhibitPC)); + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); + } + } + + /* Update the inhibit NMI mask. */ + pVM->rem.s.Env.hflags2 &= ~HF2_NMI_MASK; + if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_BLOCK_NMIS)) + pVM->rem.s.Env.hflags2 |= HF2_NMI_MASK; + + /* + * Sync the A20 gate. + */ + bool fA20State = PGMPhysIsA20Enabled(pVCpu); + if (fA20State != RT_BOOL(pVM->rem.s.Env.a20_mask & RT_BIT(20))) + { + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + cpu_x86_set_a20(&pVM->rem.s.Env, fA20State); + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + } + + /* + * Registers which are rarely changed and require special handling / order when changed. + */ + if (fFlags & ( CPUM_CHANGED_GLOBAL_TLB_FLUSH + | CPUM_CHANGED_CR4 + | CPUM_CHANGED_CR0 + | CPUM_CHANGED_CR3 + | CPUM_CHANGED_GDTR + | CPUM_CHANGED_IDTR + | CPUM_CHANGED_SYSENTER_MSR + | CPUM_CHANGED_LDTR + | CPUM_CHANGED_CPUID + | CPUM_CHANGED_FPU_REM + ) + ) + { + if (fFlags & CPUM_CHANGED_GLOBAL_TLB_FLUSH) + { + pVM->rem.s.fIgnoreCR3Load = true; + tlb_flush(&pVM->rem.s.Env, true); + pVM->rem.s.fIgnoreCR3Load = false; + } + + /* CR4 before CR0! */ + if (fFlags & CPUM_CHANGED_CR4) + { + pVM->rem.s.fIgnoreCR3Load = true; + pVM->rem.s.fIgnoreCpuMode = true; + cpu_x86_update_cr4(&pVM->rem.s.Env, pCtx->cr4); + pVM->rem.s.fIgnoreCpuMode = false; + pVM->rem.s.fIgnoreCR3Load = false; + } + + if (fFlags & CPUM_CHANGED_CR0) + { + pVM->rem.s.fIgnoreCR3Load = true; + pVM->rem.s.fIgnoreCpuMode = true; + cpu_x86_update_cr0(&pVM->rem.s.Env, pCtx->cr0); + pVM->rem.s.fIgnoreCpuMode = false; + pVM->rem.s.fIgnoreCR3Load = false; + } + + if (fFlags & CPUM_CHANGED_CR3) + { + pVM->rem.s.fIgnoreCR3Load = true; + cpu_x86_update_cr3(&pVM->rem.s.Env, pCtx->cr3); + pVM->rem.s.fIgnoreCR3Load = false; + } + + if (fFlags & CPUM_CHANGED_GDTR) + { + pVM->rem.s.Env.gdt.base = pCtx->gdtr.pGdt; + pVM->rem.s.Env.gdt.limit = pCtx->gdtr.cbGdt; + } + + if (fFlags & CPUM_CHANGED_IDTR) + { + pVM->rem.s.Env.idt.base = pCtx->idtr.pIdt; + pVM->rem.s.Env.idt.limit = pCtx->idtr.cbIdt; + } + + if (fFlags & CPUM_CHANGED_SYSENTER_MSR) + { + pVM->rem.s.Env.sysenter_cs = pCtx->SysEnter.cs; + pVM->rem.s.Env.sysenter_eip = pCtx->SysEnter.eip; + pVM->rem.s.Env.sysenter_esp = pCtx->SysEnter.esp; + } + + if (fFlags & CPUM_CHANGED_LDTR) + { + if (pCtx->ldtr.fFlags & CPUMSELREG_FLAGS_VALID) + { + pVM->rem.s.Env.ldt.selector = pCtx->ldtr.Sel; + pVM->rem.s.Env.ldt.newselector = 0; + pVM->rem.s.Env.ldt.fVBoxFlags = pCtx->ldtr.fFlags; + pVM->rem.s.Env.ldt.base = pCtx->ldtr.u64Base; + pVM->rem.s.Env.ldt.limit = pCtx->ldtr.u32Limit; + pVM->rem.s.Env.ldt.flags = (pCtx->ldtr.Attr.u & SEL_FLAGS_SMASK) << SEL_FLAGS_SHIFT; + } + else + { + AssertFailed(); /* Shouldn't happen, see cpumR3LoadExec. */ + sync_ldtr(&pVM->rem.s.Env, pCtx->ldtr.Sel); + } + } + + if (fFlags & CPUM_CHANGED_CPUID) + { + uint32_t u32Dummy; + + /* + * Get the CPUID features. + */ + CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext_features, &pVM->rem.s.Env.cpuid_features); + CPUMGetGuestCpuId(pVCpu, 0x80000001, 0, &u32Dummy, &u32Dummy, &u32Dummy, &pVM->rem.s.Env.cpuid_ext2_features); + } + + /* Sync FPU state after CR4, CPUID and EFER (!). */ + if (fFlags & CPUM_CHANGED_FPU_REM) + save_raw_fp_state(&pVM->rem.s.Env, (uint8_t *)&pCtx->pXStateR3->x87); /* 'save' is an excellent name. */ + } + + /* + * Sync TR unconditionally to make life simpler. + */ + pVM->rem.s.Env.tr.selector = pCtx->tr.Sel; + pVM->rem.s.Env.tr.newselector = 0; + pVM->rem.s.Env.tr.fVBoxFlags = pCtx->tr.fFlags; + pVM->rem.s.Env.tr.base = pCtx->tr.u64Base; + pVM->rem.s.Env.tr.limit = pCtx->tr.u32Limit; + pVM->rem.s.Env.tr.flags = (pCtx->tr.Attr.u & SEL_FLAGS_SMASK) << SEL_FLAGS_SHIFT; + + /* + * Update selector registers. + * + * This must be done *after* we've synced gdt, ldt and crX registers + * since we're reading the GDT/LDT om sync_seg. This will happen with + * saved state which takes a quick dip into rawmode for instance. + * + * CPL/Stack; Note first check this one as the CPL might have changed. + * The wrong CPL can cause QEmu to raise an exception in sync_seg!! + */ + cpu_x86_set_cpl(&pVM->rem.s.Env, uCpl); + /* Note! QEmu saves the 2nd dword of the descriptor; we should convert the attribute word back! */ +#define SYNC_IN_SREG(a_pEnv, a_SReg, a_pRemSReg, a_pVBoxSReg) \ + do \ + { \ + if (CPUMSELREG_ARE_HIDDEN_PARTS_VALID(pVCpu, a_pVBoxSReg)) \ + { \ + cpu_x86_load_seg_cache(a_pEnv, R_##a_SReg, \ + (a_pVBoxSReg)->Sel, \ + (a_pVBoxSReg)->u64Base, \ + (a_pVBoxSReg)->u32Limit, \ + ((a_pVBoxSReg)->Attr.u & SEL_FLAGS_SMASK) << SEL_FLAGS_SHIFT); \ + (a_pRemSReg)->fVBoxFlags = (a_pVBoxSReg)->fFlags; \ + } \ + /* This only-reload-if-changed stuff is the old approach, we should ditch it. */ \ + else if ((a_pRemSReg)->selector != (a_pVBoxSReg)->Sel) \ + { \ + Log2(("REMR3State: " #a_SReg " changed from %04x to %04x!\n", \ + (a_pRemSReg)->selector, (a_pVBoxSReg)->Sel)); \ + sync_seg(a_pEnv, R_##a_SReg, (a_pVBoxSReg)->Sel); \ + if ((a_pRemSReg)->newselector) \ + STAM_COUNTER_INC(&gStatSelOutOfSync[R_##a_SReg]); \ + } \ + else \ + (a_pRemSReg)->newselector = 0; \ + } while (0) + + SYNC_IN_SREG(&pVM->rem.s.Env, CS, &pVM->rem.s.Env.segs[R_CS], &pCtx->cs); + SYNC_IN_SREG(&pVM->rem.s.Env, SS, &pVM->rem.s.Env.segs[R_SS], &pCtx->ss); + SYNC_IN_SREG(&pVM->rem.s.Env, DS, &pVM->rem.s.Env.segs[R_DS], &pCtx->ds); + SYNC_IN_SREG(&pVM->rem.s.Env, ES, &pVM->rem.s.Env.segs[R_ES], &pCtx->es); + SYNC_IN_SREG(&pVM->rem.s.Env, FS, &pVM->rem.s.Env.segs[R_FS], &pCtx->fs); + SYNC_IN_SREG(&pVM->rem.s.Env, GS, &pVM->rem.s.Env.segs[R_GS], &pCtx->gs); + /** @todo need to find a way to communicate potential GDT/LDT changes and thread switches. The selector might + * be the same but not the base/limit. */ + + /* + * Check for traps. + */ + pVM->rem.s.Env.exception_index = -1; /** @todo this won't work :/ */ + rc = TRPMQueryTrap(pVCpu, &u8TrapNo, &enmType); + if (RT_SUCCESS(rc)) + { +#ifdef DEBUG + if (u8TrapNo == 0x80) + { + remR3DumpLnxSyscall(pVCpu); + remR3DumpOBsdSyscall(pVCpu); + } +#endif + + pVM->rem.s.Env.exception_index = u8TrapNo; + if (enmType != TRPM_SOFTWARE_INT) + { + pVM->rem.s.Env.exception_is_int = enmType == TRPM_HARDWARE_INT + ? EXCEPTION_IS_INT_VALUE_HARDWARE_IRQ : 0; /* HACK ALERT! */ + pVM->rem.s.Env.exception_next_eip = pVM->rem.s.Env.eip; + } + else + { + /* + * The there are two 1 byte opcodes and one 2 byte opcode for software interrupts. + * We ASSUME that there are no prefixes and sets the default to 2 byte, and checks + * for int03 and into. + */ + pVM->rem.s.Env.exception_is_int = 1; + pVM->rem.s.Env.exception_next_eip = pCtx->rip + 2; + /* int 3 may be generated by one-byte 0xcc */ + if (u8TrapNo == 3) + { + if (read_byte(&pVM->rem.s.Env, pVM->rem.s.Env.segs[R_CS].base + pCtx->rip) == 0xcc) + pVM->rem.s.Env.exception_next_eip = pCtx->rip + 1; + } + /* int 4 may be generated by one-byte 0xce */ + else if (u8TrapNo == 4) + { + if (read_byte(&pVM->rem.s.Env, pVM->rem.s.Env.segs[R_CS].base + pCtx->rip) == 0xce) + pVM->rem.s.Env.exception_next_eip = pCtx->rip + 1; + } + } + + /* get error code and cr2 if needed. */ + if (enmType == TRPM_TRAP) + { + switch (u8TrapNo) + { + case X86_XCPT_PF: + pVM->rem.s.Env.cr[2] = TRPMGetFaultAddress(pVCpu); + /* fallthru */ + case X86_XCPT_TS: case X86_XCPT_NP: case X86_XCPT_SS: case X86_XCPT_GP: + pVM->rem.s.Env.error_code = TRPMGetErrorCode(pVCpu); + break; + + case X86_XCPT_AC: case X86_XCPT_DF: + default: + pVM->rem.s.Env.error_code = 0; + break; + } + } + else + pVM->rem.s.Env.error_code = 0; + + /* + * We can now reset the active trap since the recompiler is gonna have a go at it. + */ + rc = TRPMResetTrap(pVCpu); + AssertRC(rc); + Log2(("REMR3State: trap=%02x errcd=%RGv cr2=%RGv nexteip=%RGv%s\n", pVM->rem.s.Env.exception_index, (RTGCPTR)pVM->rem.s.Env.error_code, + (RTGCPTR)pVM->rem.s.Env.cr[2], (RTGCPTR)pVM->rem.s.Env.exception_next_eip, pVM->rem.s.Env.exception_is_int ? " software" : "")); + } + + /* + * Clear old interrupt request flags; Check for pending hardware interrupts. + * (See @remark for why we don't check for other FFs.) + */ + pVM->rem.s.Env.interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB | CPU_INTERRUPT_TIMER); + if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC)) + APICUpdatePendingInterrupts(pVCpu); + if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)) + pVM->rem.s.Env.interrupt_request |= CPU_INTERRUPT_HARD; + + /* + * We're now in REM mode. + */ + VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC_REM); + pVM->rem.s.fInREM = true; + pVM->rem.s.fInStateSync = false; + pVM->rem.s.cCanExecuteRaw = 0; + STAM_PROFILE_STOP(&pVM->rem.s.StatsState, a); + Log2(("REMR3State: returns VINF_SUCCESS\n")); + return VINF_SUCCESS; +} + + +/** + * Syncs back changes in the REM state to the VM state. + * + * This must be called after invoking REMR3Run(). + * Calling it several times in a row is not permitted. + * + * @returns VBox status code. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + */ +REMR3DECL(int) REMR3StateBack(PVM pVM, PVMCPU pVCpu) +{ + register PCPUMCTX pCtx = pVM->rem.s.pCtx; + Assert(pCtx); + unsigned i; + + STAM_PROFILE_START(&pVM->rem.s.StatsStateBack, a); + Log2(("REMR3StateBack:\n")); + Assert(pVM->rem.s.fInREM); + + /* + * Copy back the registers. + * This is done in the order they are declared in the CPUMCTX structure. + */ + + /** @todo FOP */ + /** @todo FPUIP */ + /** @todo CS */ + /** @todo FPUDP */ + /** @todo DS */ + + /** @todo check if FPU/XMM was actually used in the recompiler */ + restore_raw_fp_state(&pVM->rem.s.Env, (uint8_t *)&pCtx->pXStateR3->x87); +//// dprintf2(("FPU state CW=%04X TT=%04X SW=%04X (%04X)\n", env->fpuc, env->fpstt, env->fpus, pVMCtx->fpu.FSW)); + +#ifdef TARGET_X86_64 + /* Note that the high dwords of 64 bits registers are undefined in 32 bits mode and are undefined after a mode change. */ + pCtx->rdi = pVM->rem.s.Env.regs[R_EDI]; + pCtx->rsi = pVM->rem.s.Env.regs[R_ESI]; + pCtx->rbp = pVM->rem.s.Env.regs[R_EBP]; + pCtx->rax = pVM->rem.s.Env.regs[R_EAX]; + pCtx->rbx = pVM->rem.s.Env.regs[R_EBX]; + pCtx->rdx = pVM->rem.s.Env.regs[R_EDX]; + pCtx->rcx = pVM->rem.s.Env.regs[R_ECX]; + pCtx->r8 = pVM->rem.s.Env.regs[8]; + pCtx->r9 = pVM->rem.s.Env.regs[9]; + pCtx->r10 = pVM->rem.s.Env.regs[10]; + pCtx->r11 = pVM->rem.s.Env.regs[11]; + pCtx->r12 = pVM->rem.s.Env.regs[12]; + pCtx->r13 = pVM->rem.s.Env.regs[13]; + pCtx->r14 = pVM->rem.s.Env.regs[14]; + pCtx->r15 = pVM->rem.s.Env.regs[15]; + + pCtx->rsp = pVM->rem.s.Env.regs[R_ESP]; + +#else + pCtx->edi = pVM->rem.s.Env.regs[R_EDI]; + pCtx->esi = pVM->rem.s.Env.regs[R_ESI]; + pCtx->ebp = pVM->rem.s.Env.regs[R_EBP]; + pCtx->eax = pVM->rem.s.Env.regs[R_EAX]; + pCtx->ebx = pVM->rem.s.Env.regs[R_EBX]; + pCtx->edx = pVM->rem.s.Env.regs[R_EDX]; + pCtx->ecx = pVM->rem.s.Env.regs[R_ECX]; + + pCtx->esp = pVM->rem.s.Env.regs[R_ESP]; +#endif + +#define SYNC_BACK_SREG(a_sreg, a_SREG) \ + do \ + { \ + pCtx->a_sreg.Sel = pVM->rem.s.Env.segs[R_##a_SREG].selector; \ + if (!pVM->rem.s.Env.segs[R_SS].newselector) \ + { \ + pCtx->a_sreg.ValidSel = pVM->rem.s.Env.segs[R_##a_SREG].selector; \ + pCtx->a_sreg.fFlags = CPUMSELREG_FLAGS_VALID; \ + pCtx->a_sreg.u64Base = pVM->rem.s.Env.segs[R_##a_SREG].base; \ + pCtx->a_sreg.u32Limit = pVM->rem.s.Env.segs[R_##a_SREG].limit; \ + /* Note! QEmu saves the 2nd dword of the descriptor; we (VT-x/AMD-V) keep only the attributes! */ \ + pCtx->a_sreg.Attr.u = (pVM->rem.s.Env.segs[R_##a_SREG].flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; \ + } \ + else \ + { \ + pCtx->a_sreg.fFlags = 0; \ + STAM_COUNTER_INC(&gStatSelOutOfSyncStateBack[R_##a_SREG]); \ + } \ + } while (0) + + SYNC_BACK_SREG(es, ES); + SYNC_BACK_SREG(cs, CS); + SYNC_BACK_SREG(ss, SS); + SYNC_BACK_SREG(ds, DS); + SYNC_BACK_SREG(fs, FS); + SYNC_BACK_SREG(gs, GS); + +#ifdef TARGET_X86_64 + pCtx->rip = pVM->rem.s.Env.eip; + pCtx->rflags.u64 = pVM->rem.s.Env.eflags; +#else + pCtx->eip = pVM->rem.s.Env.eip; + pCtx->eflags.u32 = pVM->rem.s.Env.eflags; +#endif + + pCtx->cr0 = pVM->rem.s.Env.cr[0]; + pCtx->cr2 = pVM->rem.s.Env.cr[2]; + pCtx->cr3 = pVM->rem.s.Env.cr[3]; +#ifdef VBOX_WITH_RAW_MODE + if (((pVM->rem.s.Env.cr[4] ^ pCtx->cr4) & X86_CR4_VME) && VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + pCtx->cr4 = pVM->rem.s.Env.cr[4]; + + for (i = 0; i < 8; i++) + pCtx->dr[i] = pVM->rem.s.Env.dr[i]; + + pCtx->gdtr.cbGdt = pVM->rem.s.Env.gdt.limit; + if (pCtx->gdtr.pGdt != pVM->rem.s.Env.gdt.base) + { + pCtx->gdtr.pGdt = pVM->rem.s.Env.gdt.base; + STAM_COUNTER_INC(&gStatREMGDTChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_GDT); +#endif + } + + pCtx->idtr.cbIdt = pVM->rem.s.Env.idt.limit; + if (pCtx->idtr.pIdt != pVM->rem.s.Env.idt.base) + { + pCtx->idtr.pIdt = pVM->rem.s.Env.idt.base; + STAM_COUNTER_INC(&gStatREMIDTChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_TRPM_SYNC_IDT); +#endif + } + + if ( pCtx->ldtr.Sel != pVM->rem.s.Env.ldt.selector + || pCtx->ldtr.ValidSel != pVM->rem.s.Env.ldt.selector + || pCtx->ldtr.u64Base != pVM->rem.s.Env.ldt.base + || pCtx->ldtr.u32Limit != pVM->rem.s.Env.ldt.limit + || pCtx->ldtr.Attr.u != ((pVM->rem.s.Env.ldt.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK) + || !(pCtx->ldtr.fFlags & CPUMSELREG_FLAGS_VALID) + ) + { + pCtx->ldtr.Sel = pVM->rem.s.Env.ldt.selector; + pCtx->ldtr.ValidSel = pVM->rem.s.Env.ldt.selector; + pCtx->ldtr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->ldtr.u64Base = pVM->rem.s.Env.ldt.base; + pCtx->ldtr.u32Limit = pVM->rem.s.Env.ldt.limit; + pCtx->ldtr.Attr.u = (pVM->rem.s.Env.ldt.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + STAM_COUNTER_INC(&gStatREMLDTRChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_LDT); +#endif + } + + if ( pCtx->tr.Sel != pVM->rem.s.Env.tr.selector + || pCtx->tr.ValidSel != pVM->rem.s.Env.tr.selector + || pCtx->tr.u64Base != pVM->rem.s.Env.tr.base + || pCtx->tr.u32Limit != pVM->rem.s.Env.tr.limit + || pCtx->tr.Attr.u != ((pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK) + || !(pCtx->tr.fFlags & CPUMSELREG_FLAGS_VALID) + ) + { + Log(("REM: TR changed! %#x{%#llx,%#x,%#x} -> %#x{%llx,%#x,%#x}\n", + pCtx->tr.Sel, pCtx->tr.u64Base, pCtx->tr.u32Limit, pCtx->tr.Attr.u, + pVM->rem.s.Env.tr.selector, (uint64_t)pVM->rem.s.Env.tr.base, pVM->rem.s.Env.tr.limit, + pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT)); + pCtx->tr.Sel = pVM->rem.s.Env.tr.selector; + pCtx->tr.ValidSel = pVM->rem.s.Env.tr.selector; + pCtx->tr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->tr.u64Base = pVM->rem.s.Env.tr.base; + pCtx->tr.u32Limit = pVM->rem.s.Env.tr.limit; + pCtx->tr.Attr.u = (pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + Assert(pCtx->tr.Attr.u & ~DESC_INTEL_UNUSABLE); + STAM_COUNTER_INC(&gStatREMTRChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + } + + /* Sysenter MSR */ + pCtx->SysEnter.cs = pVM->rem.s.Env.sysenter_cs; + pCtx->SysEnter.eip = pVM->rem.s.Env.sysenter_eip; + pCtx->SysEnter.esp = pVM->rem.s.Env.sysenter_esp; + + /* System MSRs. */ + pCtx->msrEFER = pVM->rem.s.Env.efer; + pCtx->msrSTAR = pVM->rem.s.Env.star; + pCtx->msrPAT = pVM->rem.s.Env.pat; +#ifdef TARGET_X86_64 + pCtx->msrLSTAR = pVM->rem.s.Env.lstar; + pCtx->msrCSTAR = pVM->rem.s.Env.cstar; + pCtx->msrSFMASK = pVM->rem.s.Env.fmask; + pCtx->msrKERNELGSBASE = pVM->rem.s.Env.kernelgsbase; +#endif + + /* Inhibit interrupt flag. */ + if (pVM->rem.s.Env.hflags & HF_INHIBIT_IRQ_MASK) + { + Log(("Settings VMCPU_FF_INHIBIT_INTERRUPTS at %RGv (REM)\n", (RTGCPTR)pCtx->rip)); + EMSetInhibitInterruptsPC(pVCpu, pCtx->rip); + VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); + } + else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS)) + { + Log(("Clearing VMCPU_FF_INHIBIT_INTERRUPTS at %RGv - successor %RGv (REM#2)\n", (RTGCPTR)pCtx->rip, EMGetInhibitInterruptsPC(pVCpu))); + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); + } + + /* Inhibit NMI flag. */ + if (pVM->rem.s.Env.hflags2 & HF2_NMI_MASK) + { + Log(("Settings VMCPU_FF_BLOCK_NMIS at %RGv (REM)\n", (RTGCPTR)pCtx->rip)); + VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS); + } + else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_BLOCK_NMIS)) + { + Log(("Clearing VMCPU_FF_BLOCK_NMIS at %RGv (REM)\n", (RTGCPTR)pCtx->rip)); + VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS); + } + + remR3TrapClear(pVM); + + /* + * Check for traps. + */ + if ( pVM->rem.s.Env.exception_index >= 0 + && pVM->rem.s.Env.exception_index < 256) + { + /* This cannot be a hardware-interrupt because exception_index < EXCP_INTERRUPT. */ + int rc; + + Log(("REMR3StateBack: Pending trap %x %d\n", pVM->rem.s.Env.exception_index, pVM->rem.s.Env.exception_is_int)); + TRPMEVENT enmType = pVM->rem.s.Env.exception_is_int == 0 ? TRPM_TRAP + : pVM->rem.s.Env.exception_is_int == EXCEPTION_IS_INT_VALUE_HARDWARE_IRQ ? TRPM_HARDWARE_INT + : TRPM_SOFTWARE_INT; + rc = TRPMAssertTrap(pVCpu, pVM->rem.s.Env.exception_index, enmType); + AssertRC(rc); + if (enmType == TRPM_TRAP) + { + switch (pVM->rem.s.Env.exception_index) + { + case X86_XCPT_PF: + TRPMSetFaultAddress(pVCpu, pCtx->cr2); + /* fallthru */ + case X86_XCPT_TS: case X86_XCPT_NP: case X86_XCPT_SS: case X86_XCPT_GP: + case X86_XCPT_AC: case X86_XCPT_DF: /* 0 */ + TRPMSetErrorCode(pVCpu, pVM->rem.s.Env.error_code); + break; + } + } + } + + /* + * We're not longer in REM mode. + */ + CPUMR3RemLeave(pVCpu, + !VM_IS_RAW_MODE_ENABLED(pVM) + || ( pVM->rem.s.Env.segs[R_SS].newselector + | pVM->rem.s.Env.segs[R_GS].newselector + | pVM->rem.s.Env.segs[R_FS].newselector + | pVM->rem.s.Env.segs[R_ES].newselector + | pVM->rem.s.Env.segs[R_DS].newselector + | pVM->rem.s.Env.segs[R_CS].newselector) == 0 + ); + VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_EXEC_REM); + pVM->rem.s.fInREM = false; + pVM->rem.s.pCtx = NULL; + pVM->rem.s.Env.pVCpu = NULL; + STAM_PROFILE_STOP(&pVM->rem.s.StatsStateBack, a); + Log2(("REMR3StateBack: returns VINF_SUCCESS\n")); + return VINF_SUCCESS; +} + + +/** + * This is called by the disassembler when it wants to update the cpu state + * before for instance doing a register dump. + */ +static void remR3StateUpdate(PVM pVM, PVMCPU pVCpu) +{ + register PCPUMCTX pCtx = pVM->rem.s.pCtx; + unsigned i; + + Assert(pVM->rem.s.fInREM); + + /* + * Copy back the registers. + * This is done in the order they are declared in the CPUMCTX structure. + */ + + PX86FXSTATE pFpuCtx = &pCtx->pXStateR3->x87; + /** @todo FOP */ + /** @todo FPUIP */ + /** @todo CS */ + /** @todo FPUDP */ + /** @todo DS */ + /** @todo Fix MXCSR support in QEMU so we don't overwrite MXCSR with 0 when we shouldn't! */ + pFpuCtx->MXCSR = 0; + pFpuCtx->MXCSR_MASK = 0; + + /** @todo check if FPU/XMM was actually used in the recompiler */ + restore_raw_fp_state(&pVM->rem.s.Env, (uint8_t *)pFpuCtx); +//// dprintf2(("FPU state CW=%04X TT=%04X SW=%04X (%04X)\n", env->fpuc, env->fpstt, env->fpus, pVMCtx->fpu.FSW)); + +#ifdef TARGET_X86_64 + pCtx->rdi = pVM->rem.s.Env.regs[R_EDI]; + pCtx->rsi = pVM->rem.s.Env.regs[R_ESI]; + pCtx->rbp = pVM->rem.s.Env.regs[R_EBP]; + pCtx->rax = pVM->rem.s.Env.regs[R_EAX]; + pCtx->rbx = pVM->rem.s.Env.regs[R_EBX]; + pCtx->rdx = pVM->rem.s.Env.regs[R_EDX]; + pCtx->rcx = pVM->rem.s.Env.regs[R_ECX]; + pCtx->r8 = pVM->rem.s.Env.regs[8]; + pCtx->r9 = pVM->rem.s.Env.regs[9]; + pCtx->r10 = pVM->rem.s.Env.regs[10]; + pCtx->r11 = pVM->rem.s.Env.regs[11]; + pCtx->r12 = pVM->rem.s.Env.regs[12]; + pCtx->r13 = pVM->rem.s.Env.regs[13]; + pCtx->r14 = pVM->rem.s.Env.regs[14]; + pCtx->r15 = pVM->rem.s.Env.regs[15]; + + pCtx->rsp = pVM->rem.s.Env.regs[R_ESP]; +#else + pCtx->edi = pVM->rem.s.Env.regs[R_EDI]; + pCtx->esi = pVM->rem.s.Env.regs[R_ESI]; + pCtx->ebp = pVM->rem.s.Env.regs[R_EBP]; + pCtx->eax = pVM->rem.s.Env.regs[R_EAX]; + pCtx->ebx = pVM->rem.s.Env.regs[R_EBX]; + pCtx->edx = pVM->rem.s.Env.regs[R_EDX]; + pCtx->ecx = pVM->rem.s.Env.regs[R_ECX]; + + pCtx->esp = pVM->rem.s.Env.regs[R_ESP]; +#endif + + SYNC_BACK_SREG(es, ES); + SYNC_BACK_SREG(cs, CS); + SYNC_BACK_SREG(ss, SS); + SYNC_BACK_SREG(ds, DS); + SYNC_BACK_SREG(fs, FS); + SYNC_BACK_SREG(gs, GS); + +#ifdef TARGET_X86_64 + pCtx->rip = pVM->rem.s.Env.eip; + pCtx->rflags.u64 = pVM->rem.s.Env.eflags; +#else + pCtx->eip = pVM->rem.s.Env.eip; + pCtx->eflags.u32 = pVM->rem.s.Env.eflags; +#endif + + pCtx->cr0 = pVM->rem.s.Env.cr[0]; + pCtx->cr2 = pVM->rem.s.Env.cr[2]; + pCtx->cr3 = pVM->rem.s.Env.cr[3]; +#ifdef VBOX_WITH_RAW_MODE + if (((pVM->rem.s.Env.cr[4] ^ pCtx->cr4) & X86_CR4_VME) && VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + pCtx->cr4 = pVM->rem.s.Env.cr[4]; + + for (i = 0; i < 8; i++) + pCtx->dr[i] = pVM->rem.s.Env.dr[i]; + + pCtx->gdtr.cbGdt = pVM->rem.s.Env.gdt.limit; + if (pCtx->gdtr.pGdt != (RTGCPTR)pVM->rem.s.Env.gdt.base) + { + pCtx->gdtr.pGdt = (RTGCPTR)pVM->rem.s.Env.gdt.base; + STAM_COUNTER_INC(&gStatREMGDTChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_GDT); +#endif + } + + pCtx->idtr.cbIdt = pVM->rem.s.Env.idt.limit; + if (pCtx->idtr.pIdt != (RTGCPTR)pVM->rem.s.Env.idt.base) + { + pCtx->idtr.pIdt = (RTGCPTR)pVM->rem.s.Env.idt.base; + STAM_COUNTER_INC(&gStatREMIDTChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_TRPM_SYNC_IDT); +#endif + } + + if ( pCtx->ldtr.Sel != pVM->rem.s.Env.ldt.selector + || pCtx->ldtr.ValidSel != pVM->rem.s.Env.ldt.selector + || pCtx->ldtr.u64Base != pVM->rem.s.Env.ldt.base + || pCtx->ldtr.u32Limit != pVM->rem.s.Env.ldt.limit + || pCtx->ldtr.Attr.u != ((pVM->rem.s.Env.ldt.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK) + || !(pCtx->ldtr.fFlags & CPUMSELREG_FLAGS_VALID) + ) + { + pCtx->ldtr.Sel = pVM->rem.s.Env.ldt.selector; + pCtx->ldtr.ValidSel = pVM->rem.s.Env.ldt.selector; + pCtx->ldtr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->ldtr.u64Base = pVM->rem.s.Env.ldt.base; + pCtx->ldtr.u32Limit = pVM->rem.s.Env.ldt.limit; + pCtx->ldtr.Attr.u = (pVM->rem.s.Env.ldt.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + STAM_COUNTER_INC(&gStatREMLDTRChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_LDT); +#endif + } + + if ( pCtx->tr.Sel != pVM->rem.s.Env.tr.selector + || pCtx->tr.ValidSel != pVM->rem.s.Env.tr.selector + || pCtx->tr.u64Base != pVM->rem.s.Env.tr.base + || pCtx->tr.u32Limit != pVM->rem.s.Env.tr.limit + || pCtx->tr.Attr.u != ((pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK) + || !(pCtx->tr.fFlags & CPUMSELREG_FLAGS_VALID) + ) + { + Log(("REM: TR changed! %#x{%#llx,%#x,%#x} -> %#x{%llx,%#x,%#x}\n", + pCtx->tr.Sel, pCtx->tr.u64Base, pCtx->tr.u32Limit, pCtx->tr.Attr.u, + pVM->rem.s.Env.tr.selector, (uint64_t)pVM->rem.s.Env.tr.base, pVM->rem.s.Env.tr.limit, + pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT)); + pCtx->tr.Sel = pVM->rem.s.Env.tr.selector; + pCtx->tr.ValidSel = pVM->rem.s.Env.tr.selector; + pCtx->tr.fFlags = CPUMSELREG_FLAGS_VALID; + pCtx->tr.u64Base = pVM->rem.s.Env.tr.base; + pCtx->tr.u32Limit = pVM->rem.s.Env.tr.limit; + pCtx->tr.Attr.u = (pVM->rem.s.Env.tr.flags >> SEL_FLAGS_SHIFT) & SEL_FLAGS_SMASK; + Assert(pCtx->tr.Attr.u & ~DESC_INTEL_UNUSABLE); + STAM_COUNTER_INC(&gStatREMTRChange); +#ifdef VBOX_WITH_RAW_MODE + if (VM_IS_RAW_MODE_ENABLED(pVM)) + VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS); +#endif + } + + /* Sysenter MSR */ + pCtx->SysEnter.cs = pVM->rem.s.Env.sysenter_cs; + pCtx->SysEnter.eip = pVM->rem.s.Env.sysenter_eip; + pCtx->SysEnter.esp = pVM->rem.s.Env.sysenter_esp; + + /* System MSRs. */ + pCtx->msrEFER = pVM->rem.s.Env.efer; + pCtx->msrSTAR = pVM->rem.s.Env.star; + pCtx->msrPAT = pVM->rem.s.Env.pat; +#ifdef TARGET_X86_64 + pCtx->msrLSTAR = pVM->rem.s.Env.lstar; + pCtx->msrCSTAR = pVM->rem.s.Env.cstar; + pCtx->msrSFMASK = pVM->rem.s.Env.fmask; + pCtx->msrKERNELGSBASE = pVM->rem.s.Env.kernelgsbase; +#endif + +} + + +/** + * Update the VMM state information if we're currently in REM. + * + * This method is used by the DBGF and PDMDevice when there is any uncertainty of whether + * we're currently executing in REM and the VMM state is invalid. This method will of + * course check that we're executing in REM before syncing any data over to the VMM. + * + * @param pVM The VM handle. + * @param pVCpu The VMCPU handle. + */ +REMR3DECL(void) REMR3StateUpdate(PVM pVM, PVMCPU pVCpu) +{ + if (pVM->rem.s.fInREM) + remR3StateUpdate(pVM, pVCpu); +} + + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM + + +/** + * Notify the recompiler about Address Gate 20 state change. + * + * This notification is required since A20 gate changes are + * initialized from a device driver and the VM might just as + * well be in REM mode as in RAW mode. + * + * @param pVM VM handle. + * @param pVCpu VMCPU handle. + * @param fEnable True if the gate should be enabled. + * False if the gate should be disabled. + */ +REMR3DECL(void) REMR3A20Set(PVM pVM, PVMCPU pVCpu, bool fEnable) +{ + LogFlow(("REMR3A20Set: fEnable=%d\n", fEnable)); + VM_ASSERT_EMT(pVM); + + /** @todo SMP and the A20 gate... */ + if (pVM->rem.s.Env.pVCpu == pVCpu) + { + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + cpu_x86_set_a20(&pVM->rem.s.Env, fEnable); + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + } +} + + +/** + * Replays the handler notification changes + * Called in response to VM_FF_REM_HANDLER_NOTIFY from the RAW execution loop. + * + * @param pVM VM handle. + */ +REMR3DECL(void) REMR3ReplayHandlerNotifications(PVM pVM) +{ + /* + * Replay the flushes. + */ + LogFlow(("REMR3ReplayHandlerNotifications:\n")); + VM_ASSERT_EMT(pVM); + + /** @todo this isn't ensuring correct replay order. */ + if (VM_FF_TEST_AND_CLEAR(pVM, VM_FF_REM_HANDLER_NOTIFY)) + { + uint32_t idxNext; + uint32_t idxRevHead; + uint32_t idxHead; +#ifdef VBOX_STRICT + int32_t c = 0; +#endif + + /* Lockless purging of pending notifications. */ + idxHead = ASMAtomicXchgU32(&pVM->rem.s.idxPendingList, UINT32_MAX); + if (idxHead == UINT32_MAX) + return; + Assert(idxHead < RT_ELEMENTS(pVM->rem.s.aHandlerNotifications)); + + /* + * Reverse the list to process it in FIFO order. + */ + idxRevHead = UINT32_MAX; + do + { + /* Save the index of the next rec. */ + idxNext = pVM->rem.s.aHandlerNotifications[idxHead].idxNext; + Assert(idxNext < RT_ELEMENTS(pVM->rem.s.aHandlerNotifications) || idxNext == UINT32_MAX); + /* Push the record onto the reversed list. */ + pVM->rem.s.aHandlerNotifications[idxHead].idxNext = idxRevHead; + idxRevHead = idxHead; + Assert(++c <= RT_ELEMENTS(pVM->rem.s.aHandlerNotifications)); + /* Advance. */ + idxHead = idxNext; + } while (idxHead != UINT32_MAX); + + /* + * Loop thru the list, reinserting the record into the free list as they are + * processed to avoid having other EMTs running out of entries while we're flushing. + */ + idxHead = idxRevHead; + do + { + PREMHANDLERNOTIFICATION pCur = &pVM->rem.s.aHandlerNotifications[idxHead]; + uint32_t idxCur; + Assert(--c >= 0); + + switch (pCur->enmKind) + { + case REMHANDLERNOTIFICATIONKIND_PHYSICAL_REGISTER: + remR3NotifyHandlerPhysicalRegister(pVM, + pCur->u.PhysicalRegister.enmKind, + pCur->u.PhysicalRegister.GCPhys, + pCur->u.PhysicalRegister.cb, + pCur->u.PhysicalRegister.fHasHCHandler); + break; + + case REMHANDLERNOTIFICATIONKIND_PHYSICAL_DEREGISTER: + remR3NotifyHandlerPhysicalDeregister(pVM, + pCur->u.PhysicalDeregister.enmKind, + pCur->u.PhysicalDeregister.GCPhys, + pCur->u.PhysicalDeregister.cb, + pCur->u.PhysicalDeregister.fHasHCHandler, + pCur->u.PhysicalDeregister.fRestoreAsRAM); + break; + + case REMHANDLERNOTIFICATIONKIND_PHYSICAL_MODIFY: + remR3NotifyHandlerPhysicalModify(pVM, + pCur->u.PhysicalModify.enmKind, + pCur->u.PhysicalModify.GCPhysOld, + pCur->u.PhysicalModify.GCPhysNew, + pCur->u.PhysicalModify.cb, + pCur->u.PhysicalModify.fHasHCHandler, + pCur->u.PhysicalModify.fRestoreAsRAM); + break; + + default: + AssertReleaseMsgFailed(("enmKind=%d\n", pCur->enmKind)); + break; + } + + /* + * Advance idxHead. + */ + idxCur = idxHead; + idxHead = pCur->idxNext; + Assert(idxHead < RT_ELEMENTS(pVM->rem.s.aHandlerNotifications) || (idxHead == UINT32_MAX && c == 0)); + + /* + * Put the record back into the free list. + */ + do + { + idxNext = ASMAtomicUoReadU32(&pVM->rem.s.idxFreeList); + ASMAtomicWriteU32(&pCur->idxNext, idxNext); + ASMCompilerBarrier(); + } while (!ASMAtomicCmpXchgU32(&pVM->rem.s.idxFreeList, idxCur, idxNext)); + } while (idxHead != UINT32_MAX); + +#ifdef VBOX_STRICT + if (pVM->cCpus == 1) + { + unsigned c; + /* Check that all records are now on the free list. */ + for (c = 0, idxNext = pVM->rem.s.idxFreeList; idxNext != UINT32_MAX; + idxNext = pVM->rem.s.aHandlerNotifications[idxNext].idxNext) + c++; + AssertReleaseMsg(c == RT_ELEMENTS(pVM->rem.s.aHandlerNotifications), ("%#x != %#x, idxFreeList=%#x\n", c, RT_ELEMENTS(pVM->rem.s.aHandlerNotifications), pVM->rem.s.idxFreeList)); + } +#endif + } +} + + +/** + * Notify REM about changed code page. + * + * @returns VBox status code. + * @param pVM VM handle. + * @param pVCpu VMCPU handle. + * @param pvCodePage Code page address + */ +REMR3DECL(int) REMR3NotifyCodePageChanged(PVM pVM, PVMCPU pVCpu, RTGCPTR pvCodePage) +{ +#ifdef VBOX_REM_PROTECT_PAGES_FROM_SMC + int rc; + RTGCPHYS PhysGC; + uint64_t flags; + + VM_ASSERT_EMT(pVM); + + /* + * Get the physical page address. + */ + rc = PGMGstGetPage(pVM, pvCodePage, &flags, &PhysGC); + if (rc == VINF_SUCCESS) + { + /* + * Sync the required registers and flush the whole page. + * (Easier to do the whole page than notifying it about each physical + * byte that was changed. + */ + pVM->rem.s.Env.cr[0] = pVM->rem.s.pCtx->cr0; + pVM->rem.s.Env.cr[2] = pVM->rem.s.pCtx->cr2; + pVM->rem.s.Env.cr[3] = pVM->rem.s.pCtx->cr3; + pVM->rem.s.Env.cr[4] = pVM->rem.s.pCtx->cr4; + + tb_invalidate_phys_page_range(PhysGC, PhysGC + PAGE_SIZE - 1, 0); + } +#endif + return VINF_SUCCESS; +} + + +/** + * Notification about a successful MMR3PhysRegister() call. + * + * @param pVM VM handle. + * @param GCPhys The physical address the RAM. + * @param cb Size of the memory. + * @param fFlags Flags of the REM_NOTIFY_PHYS_RAM_FLAGS_* defines. + */ +REMR3DECL(void) REMR3NotifyPhysRamRegister(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, unsigned fFlags) +{ + Log(("REMR3NotifyPhysRamRegister: GCPhys=%RGp cb=%RGp fFlags=%#x\n", GCPhys, cb, fFlags)); + VM_ASSERT_EMT(pVM); + + /* + * Validate input - we trust the caller. + */ + Assert(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys); + Assert(cb); + Assert(RT_ALIGN_Z(cb, PAGE_SIZE) == cb); + AssertMsg(fFlags == REM_NOTIFY_PHYS_RAM_FLAGS_RAM || fFlags == REM_NOTIFY_PHYS_RAM_FLAGS_MMIO2, ("%#x\n", fFlags)); + + /* + * Base ram? Update GCPhysLastRam. + */ + if (fFlags & REM_NOTIFY_PHYS_RAM_FLAGS_RAM) + { + if (GCPhys + (cb - 1) > pVM->rem.s.GCPhysLastRam) + { + AssertReleaseMsg(!pVM->rem.s.fGCPhysLastRamFixed, ("GCPhys=%RGp cb=%RGp\n", GCPhys, cb)); + pVM->rem.s.GCPhysLastRam = GCPhys + (cb - 1); + } + } + + /* + * Register the ram. + */ + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + cpu_register_physical_memory_offset(GCPhys, cb, GCPhys, GCPhys); + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); +} + + +/** + * Notification about a successful MMR3PhysRomRegister() call. + * + * @param pVM VM handle. + * @param GCPhys The physical address of the ROM. + * @param cb The size of the ROM. + * @param pvCopy Pointer to the ROM copy. + * @param fShadow Whether it's currently writable shadow ROM or normal readonly ROM. + * This function will be called when ever the protection of the + * shadow ROM changes (at reset and end of POST). + */ +REMR3DECL(void) REMR3NotifyPhysRomRegister(PVM pVM, RTGCPHYS GCPhys, RTUINT cb, void *pvCopy, bool fShadow) +{ + Log(("REMR3NotifyPhysRomRegister: GCPhys=%RGp cb=%d fShadow=%RTbool\n", GCPhys, cb, fShadow)); + VM_ASSERT_EMT(pVM); + + /* + * Validate input - we trust the caller. + */ + Assert(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys); + Assert(cb); + Assert(RT_ALIGN_Z(cb, PAGE_SIZE) == cb); + + /* + * Register the rom. + */ + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + cpu_register_physical_memory_offset(GCPhys, cb, GCPhys | (fShadow ? 0 : IO_MEM_ROM), GCPhys); + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); +} + + +/** + * Notification about a successful memory deregistration or reservation. + * + * @param pVM VM Handle. + * @param GCPhys Start physical address. + * @param cb The size of the range. + */ +REMR3DECL(void) REMR3NotifyPhysRamDeregister(PVM pVM, RTGCPHYS GCPhys, RTUINT cb) +{ + Log(("REMR3NotifyPhysRamDeregister: GCPhys=%RGp cb=%d\n", GCPhys, cb)); + VM_ASSERT_EMT(pVM); + + /* + * Validate input - we trust the caller. + */ + Assert(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys); + Assert(cb); + Assert(RT_ALIGN_Z(cb, PAGE_SIZE) == cb); + + /* + * Unassigning the memory. + */ + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + cpu_register_physical_memory_offset(GCPhys, cb, IO_MEM_UNASSIGNED, GCPhys); + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); +} + + +/** + * Notification about a successful PGMR3HandlerPhysicalRegister() call. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhys Handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * + * @remark MMR3PhysRomRegister assumes that this function will not apply the + * Handler memory type to memory which has no HC handler. + */ +static void remR3NotifyHandlerPhysicalRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, + bool fHasHCHandler) +{ + Log(("REMR3NotifyHandlerPhysicalRegister: enmKind=%d GCPhys=%RGp cb=%RGp fHasHCHandler=%d\n", + enmKind, GCPhys, cb, fHasHCHandler)); + + VM_ASSERT_EMT(pVM); + Assert(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys); + Assert(RT_ALIGN_T(cb, PAGE_SIZE, RTGCPHYS) == cb); + + + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + if (enmKind == PGMPHYSHANDLERKIND_MMIO) + cpu_register_physical_memory_offset(GCPhys, cb, pVM->rem.s.iMMIOMemType, GCPhys); + else if (fHasHCHandler) + cpu_register_physical_memory_offset(GCPhys, cb, pVM->rem.s.iHandlerMemType, GCPhys); + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); +} + +/** + * Notification about a successful PGMR3HandlerPhysicalRegister() call. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhys Handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * + * @remark MMR3PhysRomRegister assumes that this function will not apply the + * Handler memory type to memory which has no HC handler. + */ +REMR3DECL(void) REMR3NotifyHandlerPhysicalRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, + bool fHasHCHandler) +{ + REMR3ReplayHandlerNotifications(pVM); + + remR3NotifyHandlerPhysicalRegister(pVM, enmKind, GCPhys, cb, fHasHCHandler); +} + +/** + * Notification about a successful PGMR3HandlerPhysicalDeregister() operation. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhys Handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * @param fRestoreAsRAM Whether the to restore it as normal RAM or as unassigned memory. + */ +static void remR3NotifyHandlerPhysicalDeregister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, + bool fHasHCHandler, bool fRestoreAsRAM) +{ + Log(("REMR3NotifyHandlerPhysicalDeregister: enmKind=%d GCPhys=%RGp cb=%RGp fHasHCHandler=%RTbool fRestoreAsRAM=%RTbool RAM=%08x\n", + enmKind, GCPhys, cb, fHasHCHandler, fRestoreAsRAM, MMR3PhysGetRamSize(pVM))); + VM_ASSERT_EMT(pVM); + + + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + /** @todo this isn't right, MMIO can (in theory) be restored as RAM. */ + if (enmKind == PGMPHYSHANDLERKIND_MMIO) + cpu_register_physical_memory_offset(GCPhys, cb, IO_MEM_UNASSIGNED, GCPhys); + else if (fHasHCHandler) + { + if (!fRestoreAsRAM) + { + Assert(GCPhys > MMR3PhysGetRamSize(pVM)); + cpu_register_physical_memory_offset(GCPhys, cb, IO_MEM_UNASSIGNED, GCPhys); + } + else + { + Assert(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys); + Assert(RT_ALIGN_T(cb, PAGE_SIZE, RTGCPHYS) == cb); + cpu_register_physical_memory_offset(GCPhys, cb, GCPhys, GCPhys); + } + } + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); +} + +/** + * Notification about a successful PGMR3HandlerPhysicalDeregister() operation. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhys Handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * @param fRestoreAsRAM Whether the to restore it as normal RAM or as unassigned memory. + */ +REMR3DECL(void) REMR3NotifyHandlerPhysicalDeregister(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb, bool fHasHCHandler, bool fRestoreAsRAM) +{ + REMR3ReplayHandlerNotifications(pVM); + remR3NotifyHandlerPhysicalDeregister(pVM, enmKind, GCPhys, cb, fHasHCHandler, fRestoreAsRAM); +} + + +/** + * Notification about a successful PGMR3HandlerPhysicalModify() call. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhysOld Old handler range address. + * @param GCPhysNew New handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * @param fRestoreAsRAM Whether the to restore it as normal RAM or as unassigned memory. + */ +static void remR3NotifyHandlerPhysicalModify(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhysOld, RTGCPHYS GCPhysNew, RTGCPHYS cb, bool fHasHCHandler, bool fRestoreAsRAM) +{ + Log(("REMR3NotifyHandlerPhysicalModify: enmKind=%d GCPhysOld=%RGp GCPhysNew=%RGp cb=%RGp fHasHCHandler=%RTbool fRestoreAsRAM=%RTbool\n", + enmKind, GCPhysOld, GCPhysNew, cb, fHasHCHandler, fRestoreAsRAM)); + VM_ASSERT_EMT(pVM); + AssertReleaseMsg(enmKind != PGMPHYSHANDLERKIND_MMIO, ("enmKind=%d\n", enmKind)); + + if (fHasHCHandler) + { + ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll); + + /* + * Reset the old page. + */ + PDMCritSectEnter(&pVM->rem.s.CritSectRegister, VERR_SEM_BUSY); + if (!fRestoreAsRAM) + cpu_register_physical_memory_offset(GCPhysOld, cb, IO_MEM_UNASSIGNED, GCPhysOld); + else + { + /* This is not perfect, but it'll do for PD monitoring... */ + Assert(cb == PAGE_SIZE); + Assert(RT_ALIGN_T(GCPhysOld, PAGE_SIZE, RTGCPHYS) == GCPhysOld); + cpu_register_physical_memory_offset(GCPhysOld, cb, GCPhysOld, GCPhysOld); + } + + /* + * Update the new page. + */ + Assert(RT_ALIGN_T(GCPhysNew, PAGE_SIZE, RTGCPHYS) == GCPhysNew); + Assert(RT_ALIGN_T(cb, PAGE_SIZE, RTGCPHYS) == cb); + cpu_register_physical_memory_offset(GCPhysNew, cb, pVM->rem.s.iHandlerMemType, GCPhysNew); + PDMCritSectLeave(&pVM->rem.s.CritSectRegister); + + ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll); + } +} + +/** + * Notification about a successful PGMR3HandlerPhysicalModify() call. + * + * @param pVM VM Handle. + * @param enmKind Kind of access handler. + * @param GCPhysOld Old handler range address. + * @param GCPhysNew New handler range address. + * @param cb Size of the handler range. + * @param fHasHCHandler Set if the handler has a HC callback function. + * @param fRestoreAsRAM Whether the to restore it as normal RAM or as unassigned memory. + */ +REMR3DECL(void) REMR3NotifyHandlerPhysicalModify(PVM pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhysOld, RTGCPHYS GCPhysNew, RTGCPHYS cb, bool fHasHCHandler, bool fRestoreAsRAM) +{ + REMR3ReplayHandlerNotifications(pVM); + + remR3NotifyHandlerPhysicalModify(pVM, enmKind, GCPhysOld, GCPhysNew, cb, fHasHCHandler, fRestoreAsRAM); +} + +/** + * Checks if we're handling access to this page or not. + * + * @returns true if we're trapping access. + * @returns false if we aren't. + * @param pVM The VM handle. + * @param GCPhys The physical address. + * + * @remark This function will only work correctly in VBOX_STRICT builds! + */ +REMR3DECL(bool) REMR3IsPageAccessHandled(PVM pVM, RTGCPHYS GCPhys) +{ +#ifdef VBOX_STRICT + ram_addr_t off; + REMR3ReplayHandlerNotifications(pVM); + + off = get_phys_page_offset(GCPhys); + return (off & PAGE_OFFSET_MASK) == pVM->rem.s.iHandlerMemType + || (off & PAGE_OFFSET_MASK) == pVM->rem.s.iMMIOMemType + || (off & PAGE_OFFSET_MASK) == IO_MEM_ROM; +#else + return false; +#endif +} + + +/** + * Deals with a rare case in get_phys_addr_code where the code + * is being monitored. + * + * It could also be an MMIO page, in which case we will raise a fatal error. + * + * @returns The physical address corresponding to addr. + * @param env The cpu environment. + * @param addr The virtual address. + * @param pTLBEntry The TLB entry. + * @param IoTlbEntry The I/O TLB entry address. + */ +target_ulong remR3PhysGetPhysicalAddressCode(CPUX86State *env, + target_ulong addr, + CPUTLBEntry *pTLBEntry, + target_phys_addr_t IoTlbEntry) +{ + PVM pVM = env->pVM; + + if ((IoTlbEntry & ~TARGET_PAGE_MASK) == pVM->rem.s.iHandlerMemType) + { + /* If code memory is being monitored, appropriate IOTLB entry will have + handler IO type, and addend will provide real physical address, no + matter if we store VA in TLB or not, as handlers are always passed PA */ + target_ulong ret = (IoTlbEntry & TARGET_PAGE_MASK) + addr; + return ret; + } + LogRel(("\nTrying to execute code with memory type addr_code=%RGv addend=%RGp at %RGv! (iHandlerMemType=%#x iMMIOMemType=%#x IOTLB=%RGp)\n" + "*** handlers\n", + (RTGCPTR)pTLBEntry->addr_code, (RTGCPHYS)pTLBEntry->addend, (RTGCPTR)addr, pVM->rem.s.iHandlerMemType, pVM->rem.s.iMMIOMemType, (RTGCPHYS)IoTlbEntry)); + DBGFR3Info(pVM->pUVM, "handlers", NULL, DBGFR3InfoLogRelHlp()); + LogRel(("*** mmio\n")); + DBGFR3Info(pVM->pUVM, "mmio", NULL, DBGFR3InfoLogRelHlp()); + LogRel(("*** phys\n")); + DBGFR3Info(pVM->pUVM, "phys", NULL, DBGFR3InfoLogRelHlp()); + cpu_abort(env, "Trying to execute code with memory type addr_code=%RGv addend=%RGp at %RGv. (iHandlerMemType=%#x iMMIOMemType=%#x)\n", + (RTGCPTR)pTLBEntry->addr_code, (RTGCPHYS)pTLBEntry->addend, (RTGCPTR)addr, pVM->rem.s.iHandlerMemType, pVM->rem.s.iMMIOMemType); + AssertFatalFailed(); +} + +/** + * Read guest RAM and ROM. + * + * @param SrcGCPhys The source address (guest physical). + * @param pvDst The destination address. + * @param cb Number of bytes + */ +void remR3PhysRead(RTGCPHYS SrcGCPhys, void *pvDst, unsigned cb) +{ + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + VBOXSTRICTRC rcStrict = PGMPhysRead(cpu_single_env->pVM, SrcGCPhys, pvDst, cb, PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); +#ifdef VBOX_DEBUG_PHYS + LogRel(("read(%d): %08x\n", cb, (uint32_t)SrcGCPhys)); +#endif + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +} + + +/** + * Read guest RAM and ROM, unsigned 8-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCUINTREG remR3PhysReadU8(RTGCPHYS SrcGCPhys) +{ + uint8_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU8(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("readu8: %x <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, signed 8-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCINTREG remR3PhysReadS8(RTGCPHYS SrcGCPhys) +{ + int8_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU8(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("reads8: %x <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, unsigned 16-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCUINTREG remR3PhysReadU16(RTGCPHYS SrcGCPhys) +{ + uint16_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU16(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("readu16: %x <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, signed 16-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCINTREG remR3PhysReadS16(RTGCPHYS SrcGCPhys) +{ + int16_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU16(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("reads16: %x <- %08x\n", (uint16_t)val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, unsigned 32-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCUINTREG remR3PhysReadU32(RTGCPHYS SrcGCPhys) +{ + uint32_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU32(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("readu32: %x <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, signed 32-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +RTCCINTREG remR3PhysReadS32(RTGCPHYS SrcGCPhys) +{ + int32_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU32(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("reads32: %x <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, unsigned 64-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +uint64_t remR3PhysReadU64(RTGCPHYS SrcGCPhys) +{ + uint64_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU64(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("readu64: %llx <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Read guest RAM and ROM, signed 64-bit. + * + * @param SrcGCPhys The source address (guest physical). + */ +int64_t remR3PhysReadS64(RTGCPHYS SrcGCPhys) +{ + int64_t val; + STAM_PROFILE_ADV_START(&gStatMemRead, a); + VBOX_CHECK_ADDR(SrcGCPhys); + val = PGMR3PhysReadU64(cpu_single_env->pVM, SrcGCPhys, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemRead, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("reads64: %llx <- %08x\n", val, (uint32_t)SrcGCPhys)); +#endif + return val; +} + + +/** + * Write guest RAM. + * + * @param DstGCPhys The destination address (guest physical). + * @param pvSrc The source address. + * @param cb Number of bytes to write + */ +void remR3PhysWrite(RTGCPHYS DstGCPhys, const void *pvSrc, unsigned cb) +{ + STAM_PROFILE_ADV_START(&gStatMemWrite, a); + VBOX_CHECK_ADDR(DstGCPhys); + VBOXSTRICTRC rcStrict = PGMPhysWrite(cpu_single_env->pVM, DstGCPhys, pvSrc, cb, PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); + STAM_PROFILE_ADV_STOP(&gStatMemWrite, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("write(%d): %08x\n", cb, (uint32_t)DstGCPhys)); +#endif +} + + +/** + * Write guest RAM, unsigned 8-bit. + * + * @param DstGCPhys The destination address (guest physical). + * @param val Value + */ +void remR3PhysWriteU8(RTGCPHYS DstGCPhys, uint8_t val) +{ + STAM_PROFILE_ADV_START(&gStatMemWrite, a); + VBOX_CHECK_ADDR(DstGCPhys); + PGMR3PhysWriteU8(cpu_single_env->pVM, DstGCPhys, val, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemWrite, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("writeu8: %x -> %08x\n", val, (uint32_t)DstGCPhys)); +#endif +} + + +/** + * Write guest RAM, unsigned 8-bit. + * + * @param DstGCPhys The destination address (guest physical). + * @param val Value + */ +void remR3PhysWriteU16(RTGCPHYS DstGCPhys, uint16_t val) +{ + STAM_PROFILE_ADV_START(&gStatMemWrite, a); + VBOX_CHECK_ADDR(DstGCPhys); + PGMR3PhysWriteU16(cpu_single_env->pVM, DstGCPhys, val, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemWrite, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("writeu16: %x -> %08x\n", val, (uint32_t)DstGCPhys)); +#endif +} + + +/** + * Write guest RAM, unsigned 32-bit. + * + * @param DstGCPhys The destination address (guest physical). + * @param val Value + */ +void remR3PhysWriteU32(RTGCPHYS DstGCPhys, uint32_t val) +{ + STAM_PROFILE_ADV_START(&gStatMemWrite, a); + VBOX_CHECK_ADDR(DstGCPhys); + PGMR3PhysWriteU32(cpu_single_env->pVM, DstGCPhys, val, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemWrite, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("writeu32: %x -> %08x\n", val, (uint32_t)DstGCPhys)); +#endif +} + + +/** + * Write guest RAM, unsigned 64-bit. + * + * @param DstGCPhys The destination address (guest physical). + * @param val Value + */ +void remR3PhysWriteU64(RTGCPHYS DstGCPhys, uint64_t val) +{ + STAM_PROFILE_ADV_START(&gStatMemWrite, a); + VBOX_CHECK_ADDR(DstGCPhys); + PGMR3PhysWriteU64(cpu_single_env->pVM, DstGCPhys, val, PGMACCESSORIGIN_REM); + STAM_PROFILE_ADV_STOP(&gStatMemWrite, a); +#ifdef VBOX_DEBUG_PHYS + LogRel(("writeu64: %llx -> %08x\n", val, (uint32_t)DstGCPhys)); +#endif +} + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM_MMIO + +/** Read MMIO memory. */ +static uint32_t remR3MMIOReadU8(void *pvEnv, target_phys_addr_t GCPhys) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + uint32_t u32 = 0; + int rc = IOMMMIORead(env->pVM, env->pVCpu, GCPhys, &u32, 1); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); + Log2(("remR3MMIOReadU8: GCPhys=%RGp -> %02x\n", (RTGCPHYS)GCPhys, u32)); + return u32; +} + +/** Read MMIO memory. */ +static uint32_t remR3MMIOReadU16(void *pvEnv, target_phys_addr_t GCPhys) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + uint32_t u32 = 0; + int rc = IOMMMIORead(env->pVM, env->pVCpu, GCPhys, &u32, 2); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); + Log2(("remR3MMIOReadU16: GCPhys=%RGp -> %04x\n", (RTGCPHYS)GCPhys, u32)); + return u32; +} + +/** Read MMIO memory. */ +static uint32_t remR3MMIOReadU32(void *pvEnv, target_phys_addr_t GCPhys) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + uint32_t u32 = 0; + int rc = IOMMMIORead(env->pVM, env->pVCpu, GCPhys, &u32, 4); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); + Log2(("remR3MMIOReadU32: GCPhys=%RGp -> %08x\n", (RTGCPHYS)GCPhys, u32)); + return u32; +} + +/** Write to MMIO memory. */ +static void remR3MMIOWriteU8(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + int rc; + Log2(("remR3MMIOWriteU8: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + rc = IOMMMIOWrite(env->pVM, env->pVCpu, GCPhys, u32, 1); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); +} + +/** Write to MMIO memory. */ +static void remR3MMIOWriteU16(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + int rc; + Log2(("remR3MMIOWriteU16: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + rc = IOMMMIOWrite(env->pVM, env->pVCpu, GCPhys, u32, 2); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); +} + +/** Write to MMIO memory. */ +static void remR3MMIOWriteU32(void *pvEnv, target_phys_addr_t GCPhys, uint32_t u32) +{ + CPUX86State *env = (CPUX86State *)pvEnv; + int rc; + Log2(("remR3MMIOWriteU32: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + rc = IOMMMIOWrite(env->pVM, env->pVCpu, GCPhys, u32, 4); + AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc)); NOREF(rc); +} + + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM_HANDLER + +/* !!!WARNING!!! This is extremely hackish right now, we assume it's only for LFB access! !!!WARNING!!! */ + +static uint32_t remR3HandlerReadU8(void *pvVM, target_phys_addr_t GCPhys) +{ + uint8_t u8; + Log2(("remR3HandlerReadU8: GCPhys=%RGp\n", (RTGCPHYS)GCPhys)); + VBOXSTRICTRC rcStrict = PGMPhysRead((PVM)pvVM, GCPhys, &u8, sizeof(u8), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); + return u8; +} + +static uint32_t remR3HandlerReadU16(void *pvVM, target_phys_addr_t GCPhys) +{ + uint16_t u16; + Log2(("remR3HandlerReadU16: GCPhys=%RGp\n", (RTGCPHYS)GCPhys)); + VBOXSTRICTRC rcStrict = PGMPhysRead((PVM)pvVM, GCPhys, &u16, sizeof(u16), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); + return u16; +} + +static uint32_t remR3HandlerReadU32(void *pvVM, target_phys_addr_t GCPhys) +{ + uint32_t u32; + Log2(("remR3HandlerReadU32: GCPhys=%RGp\n", (RTGCPHYS)GCPhys)); + VBOXSTRICTRC rcStrict = PGMPhysRead((PVM)pvVM, GCPhys, &u32, sizeof(u32), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); + return u32; +} + +static void remR3HandlerWriteU8(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32) +{ + Log2(("remR3HandlerWriteU8: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + VBOXSTRICTRC rcStrict = PGMPhysWrite((PVM)pvVM, GCPhys, &u32, sizeof(uint8_t), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); +} + +static void remR3HandlerWriteU16(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32) +{ + Log2(("remR3HandlerWriteU16: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + VBOXSTRICTRC rcStrict = PGMPhysWrite((PVM)pvVM, GCPhys, &u32, sizeof(uint16_t), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); +} + +static void remR3HandlerWriteU32(void *pvVM, target_phys_addr_t GCPhys, uint32_t u32) +{ + Log2(("remR3HandlerWriteU32: GCPhys=%RGp u32=%#x\n", (RTGCPHYS)GCPhys, u32)); + VBOXSTRICTRC rcStrict = PGMPhysWrite((PVM)pvVM, GCPhys, &u32, sizeof(uint32_t), PGMACCESSORIGIN_REM); + AssertMsg(rcStrict == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict))); NOREF(rcStrict); +} + +/* -+- disassembly -+- */ + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM_DISAS + + +/** + * Enables or disables singled stepped disassembly. + * + * @returns VBox status code. + * @param pVM VM handle. + * @param fEnable To enable set this flag, to disable clear it. + */ +static DECLCALLBACK(int) remR3DisasEnableStepping(PVM pVM, bool fEnable) +{ + LogFlow(("remR3DisasEnableStepping: fEnable=%d\n", fEnable)); + VM_ASSERT_EMT(pVM); + + if (fEnable) + pVM->rem.s.Env.state |= CPU_EMULATE_SINGLE_STEP; + else + pVM->rem.s.Env.state &= ~CPU_EMULATE_SINGLE_STEP; +#ifdef REM_USE_QEMU_SINGLE_STEP_FOR_LOGGING + cpu_single_step(&pVM->rem.s.Env, fEnable); +#endif + return VINF_SUCCESS; +} + + +/** + * Enables or disables singled stepped disassembly. + * + * @returns VBox status code. + * @param pVM VM handle. + * @param fEnable To enable set this flag, to disable clear it. + */ +REMR3DECL(int) REMR3DisasEnableStepping(PVM pVM, bool fEnable) +{ + int rc; + + LogFlow(("REMR3DisasEnableStepping: fEnable=%d\n", fEnable)); + if (VM_IS_EMT(pVM)) + return remR3DisasEnableStepping(pVM, fEnable); + + rc = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)remR3DisasEnableStepping, 2, pVM, fEnable); + AssertRC(rc); + return rc; +} + + +#ifdef VBOX_WITH_DEBUGGER +/** + * External Debugger Command: .remstep [on|off|1|0] + */ +static DECLCALLBACK(int) remR3CmdDisasEnableStepping(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, + PCDBGCVAR paArgs, unsigned cArgs) +{ + int rc; + PVM pVM = pUVM->pVM; + + if (cArgs == 0) + /* + * Print the current status. + */ + rc = DBGCCmdHlpPrintf(pCmdHlp, "DisasStepping is %s\n", + pVM->rem.s.Env.state & CPU_EMULATE_SINGLE_STEP ? "enabled" : "disabled"); + else + { + /* + * Convert the argument and change the mode. + */ + bool fEnable; + rc = DBGCCmdHlpVarToBool(pCmdHlp, &paArgs[0], &fEnable); + if (RT_SUCCESS(rc)) + { + rc = REMR3DisasEnableStepping(pVM, fEnable); + if (RT_SUCCESS(rc)) + rc = DBGCCmdHlpPrintf(pCmdHlp, "DisasStepping was %s\n", fEnable ? "enabled" : "disabled"); + else + rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "REMR3DisasEnableStepping"); + } + else + rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToBool"); + } + return rc; +} +#endif /* VBOX_WITH_DEBUGGER */ + + +/** + * Disassembles one instruction and prints it to the log. + * + * @returns Success indicator. + * @param env Pointer to the recompiler CPU structure. + * @param f32BitCode Indicates that whether or not the code should + * be disassembled as 16 or 32 bit. If -1 the CS + * selector will be inspected. + * @param pszPrefix + */ +bool remR3DisasInstr(CPUX86State *env, int f32BitCode, char *pszPrefix) +{ + PVM pVM = env->pVM; + const bool fLog = LogIsEnabled(); + const bool fLog2 = LogIs2Enabled(); + int rc = VINF_SUCCESS; + + /* + * Don't bother if there ain't any log output to do. + */ + if (!fLog && !fLog2) + return true; + + /* + * Update the state so DBGF reads the correct register values. + */ + remR3StateUpdate(pVM, env->pVCpu); + + /* + * Log registers if requested. + */ + if (fLog2) + DBGFR3_INFO_LOG(pVM, env->pVCpu, "cpumguest", pszPrefix); + + /* + * Disassemble to log. + */ + if (fLog) + { + PVMCPU pVCpu = VMMGetCpu(pVM); + char szBuf[256]; + szBuf[0] = '\0'; + int rc = DBGFR3DisasInstrEx(pVCpu->pVMR3->pUVM, + pVCpu->idCpu, + 0, /* Sel */ 0, /* GCPtr */ + DBGF_DISAS_FLAGS_CURRENT_GUEST | DBGF_DISAS_FLAGS_DEFAULT_MODE, + szBuf, + sizeof(szBuf), + NULL); + if (RT_FAILURE(rc)) + RTStrPrintf(szBuf, sizeof(szBuf), "DBGFR3DisasInstrEx failed with rc=%Rrc\n", rc); + if (pszPrefix && *pszPrefix) + RTLogPrintf("%s-CPU%d: %s\n", pszPrefix, pVCpu->idCpu, szBuf); + else + RTLogPrintf("CPU%d: %s\n", pVCpu->idCpu, szBuf); + } + + return RT_SUCCESS(rc); +} + + +/** + * Disassemble recompiled code. + * + * @param phFileIgnored Ignored, logfile usually. + * @param pvCode Pointer to the code block. + * @param cb Size of the code block. + */ +void disas(FILE *phFileIgnored, void *pvCode, unsigned long cb) +{ + if (LogIs2Enabled()) + { + unsigned off = 0; + char szOutput[256]; + DISCPUSTATE Cpu; +#ifdef RT_ARCH_X86 + DISCPUMODE enmCpuMode = DISCPUMODE_32BIT; +#else + DISCPUMODE enmCpuMode = DISCPUMODE_64BIT; +#endif + + RTLogPrintf("Recompiled Code: %p %#lx (%ld) bytes\n", pvCode, cb, cb); + while (off < cb) + { + uint32_t cbInstr; + int rc = DISInstrToStr((uint8_t const *)pvCode + off, enmCpuMode, + &Cpu, &cbInstr, szOutput, sizeof(szOutput)); + if (RT_SUCCESS(rc)) + RTLogPrintf("%s", szOutput); + else + { + RTLogPrintf("disas error %Rrc\n", rc); + cbInstr = 1; + } + off += cbInstr; + } + } +} + + +/** + * Disassemble guest code. + * + * @param phFileIgnored Ignored, logfile usually. + * @param uCode The guest address of the code to disassemble. (flat?) + * @param cb Number of bytes to disassemble. + * @param fFlags Flags, probably something which tells if this is 16, 32 or 64 bit code. + */ +void target_disas(FILE *phFileIgnored, target_ulong uCode, target_ulong cb, int fFlags) +{ + if (LogIs2Enabled()) + { + PVM pVM = cpu_single_env->pVM; + PVMCPU pVCpu = cpu_single_env->pVCpu; + RTSEL cs; + RTGCUINTPTR eip; + + Assert(pVCpu); + + /* + * Update the state so DBGF reads the correct register values (flags). + */ + remR3StateUpdate(pVM, pVCpu); + + /* + * Do the disassembling. + */ + RTLogPrintf("Guest Code: PC=%llx %llx bytes fFlags=%d\n", (uint64_t)uCode, (uint64_t)cb, fFlags); + cs = cpu_single_env->segs[R_CS].selector; + eip = uCode - cpu_single_env->segs[R_CS].base; + for (;;) + { + char szBuf[256]; + uint32_t cbInstr; + int rc = DBGFR3DisasInstrEx(pVM->pUVM, + pVCpu->idCpu, + cs, + eip, + DBGF_DISAS_FLAGS_DEFAULT_MODE, + szBuf, sizeof(szBuf), + &cbInstr); + if (RT_SUCCESS(rc)) + RTLogPrintf("%llx %s\n", (uint64_t)uCode, szBuf); + else + { + RTLogPrintf("%llx %04x:%llx: %s\n", (uint64_t)uCode, cs, (uint64_t)eip, szBuf); + cbInstr = 1; + } + + /* next */ + if (cb <= cbInstr) + break; + cb -= cbInstr; + uCode += cbInstr; + eip += cbInstr; + } + } +} + + +/** + * Looks up a guest symbol. + * + * @returns Pointer to symbol name. This is a static buffer. + * @param orig_addr The address in question. + */ +const char *lookup_symbol(target_ulong orig_addr) +{ + PVM pVM = cpu_single_env->pVM; + RTGCINTPTR off = 0; + RTDBGSYMBOL Sym; + DBGFADDRESS Addr; + + int rc = DBGFR3AsSymbolByAddr(pVM->pUVM, DBGF_AS_GLOBAL, DBGFR3AddrFromFlat(pVM->pUVM, &Addr, orig_addr), + RTDBGSYMADDR_FLAGS_LESS_OR_EQUAL | RTDBGSYMADDR_FLAGS_SKIP_ABS_IN_DEFERRED, + &off, &Sym, NULL /*phMod*/); + if (RT_SUCCESS(rc)) + { + static char szSym[sizeof(Sym.szName) + 48]; + if (!off) + RTStrPrintf(szSym, sizeof(szSym), "%s\n", Sym.szName); + else if (off > 0) + RTStrPrintf(szSym, sizeof(szSym), "%s+%x\n", Sym.szName, off); + else + RTStrPrintf(szSym, sizeof(szSym), "%s-%x\n", Sym.szName, -off); + return szSym; + } + return "<N/A>"; +} + + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM + + +/* -+- FF notifications -+- */ + +/** + * Notification about the interrupt FF being set. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + * @thread The emulation thread. + */ +REMR3DECL(void) REMR3NotifyInterruptSet(PVM pVM, PVMCPU pVCpu) +{ + LogFlow(("REMR3NotifyInterruptSet: fInRem=%d interrupts %s\n", pVM->rem.s.fInREM, + (pVM->rem.s.Env.eflags & IF_MASK) && !(pVM->rem.s.Env.hflags & HF_INHIBIT_IRQ_MASK) ? "enabled" : "disabled")); + if (pVM->rem.s.fInREM) + ASMAtomicOrS32((int32_t volatile *)&cpu_single_env->interrupt_request, CPU_INTERRUPT_EXTERNAL_HARD); +} + + +/** + * Notification about the interrupt FF being set. + * + * @param pVM VM Handle. + * @param pVCpu VMCPU Handle. + * @thread Any. + */ +REMR3DECL(void) REMR3NotifyInterruptClear(PVM pVM, PVMCPU pVCpu) +{ + LogFlow(("REMR3NotifyInterruptClear:\n")); + if (pVM->rem.s.fInREM) + cpu_reset_interrupt(cpu_single_env, CPU_INTERRUPT_HARD); +} + + +/** + * Notification about pending timer(s). + * + * @param pVM VM Handle. + * @param pVCpuDst The target cpu for this notification. + * TM will not broadcast pending timer events, but use + * a dedicated EMT for them. So, only interrupt REM + * execution if the given CPU is executing in REM. + * @thread Any. + */ +REMR3DECL(void) REMR3NotifyTimerPending(PVM pVM, PVMCPU pVCpuDst) +{ +#ifndef DEBUG_bird + LogFlow(("REMR3NotifyTimerPending: fInRem=%d\n", pVM->rem.s.fInREM)); +#endif + if (pVM->rem.s.fInREM) + { + if (pVM->rem.s.Env.pVCpu == pVCpuDst) + { + LogIt(RTLOGGRPFLAGS_LEVEL_5, LOG_GROUP_TM, ("REMR3NotifyTimerPending: setting\n")); + ASMAtomicOrS32((int32_t volatile *)&pVM->rem.s.Env.interrupt_request, + CPU_INTERRUPT_EXTERNAL_TIMER); + } + else + LogIt(RTLOGGRPFLAGS_LEVEL_5, LOG_GROUP_TM, ("REMR3NotifyTimerPending: pVCpu:%p != pVCpuDst:%p\n", pVM->rem.s.Env.pVCpu, pVCpuDst)); + } + else + LogIt(RTLOGGRPFLAGS_LEVEL_5, LOG_GROUP_TM, ("REMR3NotifyTimerPending: !fInREM; cpu state=%d\n", VMCPU_GET_STATE(pVCpuDst))); +} + + +/** + * Notification about pending DMA transfers. + * + * @param pVM VM Handle. + * @thread Any. + */ +REMR3DECL(void) REMR3NotifyDmaPending(PVM pVM) +{ + LogFlow(("REMR3NotifyDmaPending: fInRem=%d\n", pVM->rem.s.fInREM)); + if (pVM->rem.s.fInREM) + ASMAtomicOrS32((int32_t volatile *)&cpu_single_env->interrupt_request, CPU_INTERRUPT_EXTERNAL_DMA); +} + + +/** + * Notification about pending timer(s). + * + * @param pVM VM Handle. + * @thread Any. + */ +REMR3DECL(void) REMR3NotifyQueuePending(PVM pVM) +{ + LogFlow(("REMR3NotifyQueuePending: fInRem=%d\n", pVM->rem.s.fInREM)); + if (pVM->rem.s.fInREM) + ASMAtomicOrS32((int32_t volatile *)&cpu_single_env->interrupt_request, CPU_INTERRUPT_EXTERNAL_EXIT); +} + + +/** + * Notification about pending FF set by an external thread. + * + * @param pVM VM handle. + * @thread Any. + */ +REMR3DECL(void) REMR3NotifyFF(PVM pVM) +{ + LogFlow(("REMR3NotifyFF: fInRem=%d\n", pVM->rem.s.fInREM)); + if (pVM->rem.s.fInREM) + ASMAtomicOrS32((int32_t volatile *)&cpu_single_env->interrupt_request, CPU_INTERRUPT_EXTERNAL_EXIT); +} + + +#ifdef VBOX_WITH_STATISTICS +void remR3ProfileStart(int statcode) +{ + STAMPROFILEADV *pStat; + switch(statcode) + { + case STATS_EMULATE_SINGLE_INSTR: + pStat = &gStatExecuteSingleInstr; + break; + case STATS_QEMU_COMPILATION: + pStat = &gStatCompilationQEmu; + break; + case STATS_QEMU_RUN_EMULATED_CODE: + pStat = &gStatRunCodeQEmu; + break; + case STATS_QEMU_TOTAL: + pStat = &gStatTotalTimeQEmu; + break; + case STATS_QEMU_RUN_TIMERS: + pStat = &gStatTimers; + break; + case STATS_TLB_LOOKUP: + pStat= &gStatTBLookup; + break; + case STATS_IRQ_HANDLING: + pStat= &gStatIRQ; + break; + case STATS_RAW_CHECK: + pStat = &gStatRawCheck; + break; + + default: + AssertMsgFailed(("unknown stat %d\n", statcode)); + return; + } + STAM_PROFILE_ADV_START(pStat, a); +} + + +void remR3ProfileStop(int statcode) +{ + STAMPROFILEADV *pStat; + switch(statcode) + { + case STATS_EMULATE_SINGLE_INSTR: + pStat = &gStatExecuteSingleInstr; + break; + case STATS_QEMU_COMPILATION: + pStat = &gStatCompilationQEmu; + break; + case STATS_QEMU_RUN_EMULATED_CODE: + pStat = &gStatRunCodeQEmu; + break; + case STATS_QEMU_TOTAL: + pStat = &gStatTotalTimeQEmu; + break; + case STATS_QEMU_RUN_TIMERS: + pStat = &gStatTimers; + break; + case STATS_TLB_LOOKUP: + pStat= &gStatTBLookup; + break; + case STATS_IRQ_HANDLING: + pStat= &gStatIRQ; + break; + case STATS_RAW_CHECK: + pStat = &gStatRawCheck; + break; + default: + AssertMsgFailed(("unknown stat %d\n", statcode)); + return; + } + STAM_PROFILE_ADV_STOP(pStat, a); +} +#endif + +/** + * Raise an RC, force rem exit. + * + * @param pVM VM handle. + * @param rc The rc. + */ +void remR3RaiseRC(PVM pVM, int rc) +{ + Log(("remR3RaiseRC: rc=%Rrc\n", rc)); + Assert(pVM->rem.s.fInREM); + VM_ASSERT_EMT(pVM); + pVM->rem.s.rc = rc; + cpu_interrupt(&pVM->rem.s.Env, CPU_INTERRUPT_RC); +} + + +/* -+- timers -+- */ + +uint64_t cpu_get_tsc(CPUX86State *env) +{ + STAM_COUNTER_INC(&gStatCpuGetTSC); + return TMCpuTickGet(env->pVCpu); +} + + +/* -+- interrupts -+- */ + +void cpu_set_ferr(CPUX86State *env) +{ + int rc = PDMIsaSetIrq(env->pVM, 13, 1, 0 /*uTagSrc*/); + LogFlow(("cpu_set_ferr: rc=%d\n", rc)); NOREF(rc); +} + +int cpu_get_pic_interrupt(CPUX86State *env) +{ + uint8_t u8Interrupt; + int rc; + + if (VMCPU_FF_TEST_AND_CLEAR(env->pVCpu, VMCPU_FF_UPDATE_APIC)) + APICUpdatePendingInterrupts(env->pVCpu); + + /* When we fail to forward interrupts directly in raw mode, we fall back to the recompiler. + * In that case we can't call PDMGetInterrupt anymore, because it has already cleared the interrupt + * with the (a)pic. + */ + /* Note! We assume we will go directly to the recompiler to handle the pending interrupt! */ + rc = PDMGetInterrupt(env->pVCpu, &u8Interrupt); + LogFlow(("cpu_get_pic_interrupt: u8Interrupt=%d rc=%Rrc pc=%04x:%08llx ~flags=%08llx\n", + u8Interrupt, rc, env->segs[R_CS].selector, (uint64_t)env->eip, (uint64_t)env->eflags)); + if (RT_SUCCESS(rc)) + { + if (VMCPU_FF_IS_ANY_SET(env->pVCpu, VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)) + env->interrupt_request |= CPU_INTERRUPT_HARD; + return u8Interrupt; + } + return -1; +} + + +/* -+- local apic -+- */ + +#if 0 /* CPUMSetGuestMsr does this now. */ +void cpu_set_apic_base(CPUX86State *env, uint64_t val) +{ + int rc = PDMApicSetBase(env->pVM, val); + LogFlow(("cpu_set_apic_base: val=%#llx rc=%Rrc\n", val, rc)); NOREF(rc); +} +#endif + +uint64_t cpu_get_apic_base(CPUX86State *env) +{ + uint64_t u64; + VBOXSTRICTRC rcStrict = CPUMQueryGuestMsr(env->pVCpu, MSR_IA32_APICBASE, &u64); + if (RT_SUCCESS(rcStrict)) + { + LogFlow(("cpu_get_apic_base: returns %#llx \n", u64)); + return u64; + } + LogFlow(("cpu_get_apic_base: returns 0 (rc=%Rrc)\n", VBOXSTRICTRC_VAL(rcStrict))); + return 0; +} + +void cpu_set_apic_tpr(CPUX86State *env, uint8_t val) +{ + int rc = APICSetTpr(env->pVCpu, val << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */ + LogFlow(("cpu_set_apic_tpr: val=%#x rc=%Rrc\n", val, rc)); NOREF(rc); +} + +uint8_t cpu_get_apic_tpr(CPUX86State *env) +{ + uint8_t u8; + int rc = APICGetTpr(env->pVCpu, &u8, NULL, NULL); + if (RT_SUCCESS(rc)) + { + LogFlow(("cpu_get_apic_tpr: returns %#x\n", u8)); + return u8 >> 4; /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */ + } + LogFlow(("cpu_get_apic_tpr: returns 0 (rc=%Rrc)\n", rc)); + return 0; +} + +/** + * Read an MSR. + * + * @retval 0 success. + * @retval -1 failure, raise \#GP(0). + * @param env The cpu state. + * @param idMsr The MSR to read. + * @param puValue Where to return the value. + */ +int cpu_rdmsr(CPUX86State *env, uint32_t idMsr, uint64_t *puValue) +{ + Assert(env->pVCpu); + return CPUMQueryGuestMsr(env->pVCpu, idMsr, puValue) == VINF_SUCCESS ? 0 : -1; +} + +/** + * Write to an MSR. + * + * @retval 0 success. + * @retval -1 failure, raise \#GP(0). + * @param env The cpu state. + * @param idMsr The MSR to write to. + * @param uValue The value to write. + */ +int cpu_wrmsr(CPUX86State *env, uint32_t idMsr, uint64_t uValue) +{ + Assert(env->pVCpu); + return CPUMSetGuestMsr(env->pVCpu, idMsr, uValue) == VINF_SUCCESS ? 0 : -1; +} + +/* -+- I/O Ports -+- */ + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM_IOPORT + +void cpu_outb(CPUX86State *env, pio_addr_t addr, uint8_t val) +{ + int rc; + + if (addr != 0x80 && addr != 0x70 && addr != 0x61) + Log2(("cpu_outb: addr=%#06x val=%#x\n", addr, val)); + + rc = IOMIOPortWrite(env->pVM, env->pVCpu, (RTIOPORT)addr, val, 1); + if (RT_LIKELY(rc == VINF_SUCCESS)) + return; + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_outb: addr=%#06x val=%#x -> %Rrc\n", addr, val, rc)); + remR3RaiseRC(env->pVM, rc); + return; + } + remAbort(rc, __FUNCTION__); +} + +void cpu_outw(CPUX86State *env, pio_addr_t addr, uint16_t val) +{ + //Log2(("cpu_outw: addr=%#06x val=%#x\n", addr, val)); + int rc = IOMIOPortWrite(env->pVM, env->pVCpu, (RTIOPORT)addr, val, 2); + if (RT_LIKELY(rc == VINF_SUCCESS)) + return; + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_outw: addr=%#06x val=%#x -> %Rrc\n", addr, val, rc)); + remR3RaiseRC(env->pVM, rc); + return; + } + remAbort(rc, __FUNCTION__); +} + +void cpu_outl(CPUX86State *env, pio_addr_t addr, uint32_t val) +{ + int rc; + Log2(("cpu_outl: addr=%#06x val=%#x\n", addr, val)); + rc = IOMIOPortWrite(env->pVM, env->pVCpu, (RTIOPORT)addr, val, 4); + if (RT_LIKELY(rc == VINF_SUCCESS)) + return; + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_outl: addr=%#06x val=%#x -> %Rrc\n", addr, val, rc)); + remR3RaiseRC(env->pVM, rc); + return; + } + remAbort(rc, __FUNCTION__); +} + +uint8_t cpu_inb(CPUX86State *env, pio_addr_t addr) +{ + uint32_t u32 = 0; + int rc = IOMIOPortRead(env->pVM, env->pVCpu, (RTIOPORT)addr, &u32, 1); + if (RT_LIKELY(rc == VINF_SUCCESS)) + { + if (/*addr != 0x61 && */addr != 0x71) + Log2(("cpu_inb: addr=%#06x -> %#x\n", addr, u32)); + return (uint8_t)u32; + } + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_inb: addr=%#06x -> %#x rc=%Rrc\n", addr, u32, rc)); + remR3RaiseRC(env->pVM, rc); + return (uint8_t)u32; + } + remAbort(rc, __FUNCTION__); + return UINT8_C(0xff); +} + +uint16_t cpu_inw(CPUX86State *env, pio_addr_t addr) +{ + uint32_t u32 = 0; + int rc = IOMIOPortRead(env->pVM, env->pVCpu, (RTIOPORT)addr, &u32, 2); + if (RT_LIKELY(rc == VINF_SUCCESS)) + { + Log2(("cpu_inw: addr=%#06x -> %#x\n", addr, u32)); + return (uint16_t)u32; + } + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_inw: addr=%#06x -> %#x rc=%Rrc\n", addr, u32, rc)); + remR3RaiseRC(env->pVM, rc); + return (uint16_t)u32; + } + remAbort(rc, __FUNCTION__); + return UINT16_C(0xffff); +} + +uint32_t cpu_inl(CPUX86State *env, pio_addr_t addr) +{ + uint32_t u32 = 0; + int rc = IOMIOPortRead(env->pVM, env->pVCpu, (RTIOPORT)addr, &u32, 4); + if (RT_LIKELY(rc == VINF_SUCCESS)) + { + Log2(("cpu_inl: addr=%#06x -> %#x\n", addr, u32)); + return u32; + } + if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) + { + Log(("cpu_inl: addr=%#06x -> %#x rc=%Rrc\n", addr, u32, rc)); + remR3RaiseRC(env->pVM, rc); + return u32; + } + remAbort(rc, __FUNCTION__); + return UINT32_C(0xffffffff); +} + +#undef LOG_GROUP +#define LOG_GROUP LOG_GROUP_REM + + +/* -+- helpers and misc other interfaces -+- */ + +/** + * Perform the CPUID instruction. + * + * @param env Pointer to the recompiler CPU structure. + * @param idx The CPUID leaf (eax). + * @param idxSub The CPUID sub-leaf (ecx) where applicable. + * @param pEAX Where to store eax. + * @param pEBX Where to store ebx. + * @param pECX Where to store ecx. + * @param pEDX Where to store edx. + */ +void cpu_x86_cpuid(CPUX86State *env, uint32_t idx, uint32_t idxSub, + uint32_t *pEAX, uint32_t *pEBX, uint32_t *pECX, uint32_t *pEDX) +{ + NOREF(idxSub); + CPUMGetGuestCpuId(env->pVCpu, idx, idxSub, pEAX, pEBX, pECX, pEDX); +} + + +#if 0 /* not used */ +/** + * Interface for qemu hardware to report back fatal errors. + */ +void hw_error(const char *pszFormat, ...) +{ + /* + * Bitch about it. + */ + /** @todo Add support for nested arg lists in the LogPrintfV routine! I've code for + * this in my Odin32 tree at home! */ + va_list args; + va_start(args, pszFormat); + RTLogPrintf("fatal error in virtual hardware:"); + RTLogPrintfV(pszFormat, args); + va_end(args); + AssertReleaseMsgFailed(("fatal error in virtual hardware: %s\n", pszFormat)); + + /* + * If we're in REM context we'll sync back the state before 'jumping' to + * the EMs failure handling. + */ + PVM pVM = cpu_single_env->pVM; + if (pVM->rem.s.fInREM) + REMR3StateBack(pVM); + EMR3FatalError(pVM, VERR_REM_VIRTUAL_HARDWARE_ERROR); + AssertMsgFailed(("EMR3FatalError returned!\n")); +} +#endif + +/** + * Interface for the qemu cpu to report unhandled situation + * raising a fatal VM error. + */ +void cpu_abort(CPUX86State *env, const char *pszFormat, ...) +{ + va_list va; + PVM pVM; + PVMCPU pVCpu; + char szMsg[256]; + + /* + * Bitch about it. + */ + RTLogFlags(NULL, "nodisabled nobuffered"); + RTLogFlush(NULL); + + va_start(va, pszFormat); +#if defined(RT_OS_WINDOWS) && ARCH_BITS == 64 + /* It's a bit complicated when mixing MSC and GCC on AMD64. This is a bit ugly, but it works. */ + unsigned cArgs = 0; + uintptr_t auArgs[6] = {0,0,0,0,0,0}; + const char *psz = strchr(pszFormat, '%'); + while (psz && cArgs < 6) + { + auArgs[cArgs++] = va_arg(va, uintptr_t); + psz = strchr(psz + 1, '%'); + } + switch (cArgs) + { + case 1: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0]); break; + case 2: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0], auArgs[1]); break; + case 3: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0], auArgs[1], auArgs[2]); break; + case 4: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0], auArgs[1], auArgs[2], auArgs[3]); break; + case 5: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0], auArgs[1], auArgs[2], auArgs[3], auArgs[4]); break; + case 6: RTStrPrintf(szMsg, sizeof(szMsg), pszFormat, auArgs[0], auArgs[1], auArgs[2], auArgs[3], auArgs[4], auArgs[5]); break; + default: + case 0: RTStrPrintf(szMsg, sizeof(szMsg), "%s", pszFormat); break; + } +#else + RTStrPrintfV(szMsg, sizeof(szMsg), pszFormat, va); +#endif + va_end(va); + + RTLogPrintf("fatal error in recompiler cpu: %s\n", szMsg); + RTLogRelPrintf("fatal error in recompiler cpu: %s\n", szMsg); + + /* + * If we're in REM context we'll sync back the state before 'jumping' to + * the EMs failure handling. + */ + pVM = cpu_single_env->pVM; + pVCpu = cpu_single_env->pVCpu; + Assert(pVCpu); + + if (pVM->rem.s.fInREM) + REMR3StateBack(pVM, pVCpu); + EMR3FatalError(pVCpu, VERR_REM_VIRTUAL_CPU_ERROR); + AssertMsgFailed(("EMR3FatalError returned!\n")); +} + + +/** + * Aborts the VM. + * + * @param rc VBox error code. + * @param pszTip Hint about why/when this happened. + */ +void remAbort(int rc, const char *pszTip) +{ + PVM pVM; + PVMCPU pVCpu; + + /* + * Bitch about it. + */ + RTLogPrintf("internal REM fatal error: rc=%Rrc %s\n", rc, pszTip); + AssertReleaseMsgFailed(("internal REM fatal error: rc=%Rrc %s\n", rc, pszTip)); + + /* + * Jump back to where we entered the recompiler. + */ + pVM = cpu_single_env->pVM; + pVCpu = cpu_single_env->pVCpu; + Assert(pVCpu); + + if (pVM->rem.s.fInREM) + REMR3StateBack(pVM, pVCpu); + + EMR3FatalError(pVCpu, rc); + AssertMsgFailed(("EMR3FatalError returned!\n")); +} + + +/** + * Dumps a linux system call. + * @param pVCpu VMCPU handle. + */ +void remR3DumpLnxSyscall(PVMCPU pVCpu) +{ + static const char *apsz[] = + { + "sys_restart_syscall", /* 0 - old "setup()" system call, used for restarting */ + "sys_exit", + "sys_fork", + "sys_read", + "sys_write", + "sys_open", /* 5 */ + "sys_close", + "sys_waitpid", + "sys_creat", + "sys_link", + "sys_unlink", /* 10 */ + "sys_execve", + "sys_chdir", + "sys_time", + "sys_mknod", + "sys_chmod", /* 15 */ + "sys_lchown16", + "sys_ni_syscall", /* old break syscall holder */ + "sys_stat", + "sys_lseek", + "sys_getpid", /* 20 */ + "sys_mount", + "sys_oldumount", + "sys_setuid16", + "sys_getuid16", + "sys_stime", /* 25 */ + "sys_ptrace", + "sys_alarm", + "sys_fstat", + "sys_pause", + "sys_utime", /* 30 */ + "sys_ni_syscall", /* old stty syscall holder */ + "sys_ni_syscall", /* old gtty syscall holder */ + "sys_access", + "sys_nice", + "sys_ni_syscall", /* 35 - old ftime syscall holder */ + "sys_sync", + "sys_kill", + "sys_rename", + "sys_mkdir", + "sys_rmdir", /* 40 */ + "sys_dup", + "sys_pipe", + "sys_times", + "sys_ni_syscall", /* old prof syscall holder */ + "sys_brk", /* 45 */ + "sys_setgid16", + "sys_getgid16", + "sys_signal", + "sys_geteuid16", + "sys_getegid16", /* 50 */ + "sys_acct", + "sys_umount", /* recycled never used phys() */ + "sys_ni_syscall", /* old lock syscall holder */ + "sys_ioctl", + "sys_fcntl", /* 55 */ + "sys_ni_syscall", /* old mpx syscall holder */ + "sys_setpgid", + "sys_ni_syscall", /* old ulimit syscall holder */ + "sys_olduname", + "sys_umask", /* 60 */ + "sys_chroot", + "sys_ustat", + "sys_dup2", + "sys_getppid", + "sys_getpgrp", /* 65 */ + "sys_setsid", + "sys_sigaction", + "sys_sgetmask", + "sys_ssetmask", + "sys_setreuid16", /* 70 */ + "sys_setregid16", + "sys_sigsuspend", + "sys_sigpending", + "sys_sethostname", + "sys_setrlimit", /* 75 */ + "sys_old_getrlimit", + "sys_getrusage", + "sys_gettimeofday", + "sys_settimeofday", + "sys_getgroups16", /* 80 */ + "sys_setgroups16", + "old_select", + "sys_symlink", + "sys_lstat", + "sys_readlink", /* 85 */ + "sys_uselib", + "sys_swapon", + "sys_reboot", + "old_readdir", + "old_mmap", /* 90 */ + "sys_munmap", + "sys_truncate", + "sys_ftruncate", + "sys_fchmod", + "sys_fchown16", /* 95 */ + "sys_getpriority", + "sys_setpriority", + "sys_ni_syscall", /* old profil syscall holder */ + "sys_statfs", + "sys_fstatfs", /* 100 */ + "sys_ioperm", + "sys_socketcall", + "sys_syslog", + "sys_setitimer", + "sys_getitimer", /* 105 */ + "sys_newstat", + "sys_newlstat", + "sys_newfstat", + "sys_uname", + "sys_iopl", /* 110 */ + "sys_vhangup", + "sys_ni_syscall", /* old "idle" system call */ + "sys_vm86old", + "sys_wait4", + "sys_swapoff", /* 115 */ + "sys_sysinfo", + "sys_ipc", + "sys_fsync", + "sys_sigreturn", + "sys_clone", /* 120 */ + "sys_setdomainname", + "sys_newuname", + "sys_modify_ldt", + "sys_adjtimex", + "sys_mprotect", /* 125 */ + "sys_sigprocmask", + "sys_ni_syscall", /* old "create_module" */ + "sys_init_module", + "sys_delete_module", + "sys_ni_syscall", /* 130: old "get_kernel_syms" */ + "sys_quotactl", + "sys_getpgid", + "sys_fchdir", + "sys_bdflush", + "sys_sysfs", /* 135 */ + "sys_personality", + "sys_ni_syscall", /* reserved for afs_syscall */ + "sys_setfsuid16", + "sys_setfsgid16", + "sys_llseek", /* 140 */ + "sys_getdents", + "sys_select", + "sys_flock", + "sys_msync", + "sys_readv", /* 145 */ + "sys_writev", + "sys_getsid", + "sys_fdatasync", + "sys_sysctl", + "sys_mlock", /* 150 */ + "sys_munlock", + "sys_mlockall", + "sys_munlockall", + "sys_sched_setparam", + "sys_sched_getparam", /* 155 */ + "sys_sched_setscheduler", + "sys_sched_getscheduler", + "sys_sched_yield", + "sys_sched_get_priority_max", + "sys_sched_get_priority_min", /* 160 */ + "sys_sched_rr_get_interval", + "sys_nanosleep", + "sys_mremap", + "sys_setresuid16", + "sys_getresuid16", /* 165 */ + "sys_vm86", + "sys_ni_syscall", /* Old sys_query_module */ + "sys_poll", + "sys_nfsservctl", + "sys_setresgid16", /* 170 */ + "sys_getresgid16", + "sys_prctl", + "sys_rt_sigreturn", + "sys_rt_sigaction", + "sys_rt_sigprocmask", /* 175 */ + "sys_rt_sigpending", + "sys_rt_sigtimedwait", + "sys_rt_sigqueueinfo", + "sys_rt_sigsuspend", + "sys_pread64", /* 180 */ + "sys_pwrite64", + "sys_chown16", + "sys_getcwd", + "sys_capget", + "sys_capset", /* 185 */ + "sys_sigaltstack", + "sys_sendfile", + "sys_ni_syscall", /* reserved for streams1 */ + "sys_ni_syscall", /* reserved for streams2 */ + "sys_vfork", /* 190 */ + "sys_getrlimit", + "sys_mmap2", + "sys_truncate64", + "sys_ftruncate64", + "sys_stat64", /* 195 */ + "sys_lstat64", + "sys_fstat64", + "sys_lchown", + "sys_getuid", + "sys_getgid", /* 200 */ + "sys_geteuid", + "sys_getegid", + "sys_setreuid", + "sys_setregid", + "sys_getgroups", /* 205 */ + "sys_setgroups", + "sys_fchown", + "sys_setresuid", + "sys_getresuid", + "sys_setresgid", /* 210 */ + "sys_getresgid", + "sys_chown", + "sys_setuid", + "sys_setgid", + "sys_setfsuid", /* 215 */ + "sys_setfsgid", + "sys_pivot_root", + "sys_mincore", + "sys_madvise", + "sys_getdents64", /* 220 */ + "sys_fcntl64", + "sys_ni_syscall", /* reserved for TUX */ + "sys_ni_syscall", + "sys_gettid", + "sys_readahead", /* 225 */ + "sys_setxattr", + "sys_lsetxattr", + "sys_fsetxattr", + "sys_getxattr", + "sys_lgetxattr", /* 230 */ + "sys_fgetxattr", + "sys_listxattr", + "sys_llistxattr", + "sys_flistxattr", + "sys_removexattr", /* 235 */ + "sys_lremovexattr", + "sys_fremovexattr", + "sys_tkill", + "sys_sendfile64", + "sys_futex", /* 240 */ + "sys_sched_setaffinity", + "sys_sched_getaffinity", + "sys_set_thread_area", + "sys_get_thread_area", + "sys_io_setup", /* 245 */ + "sys_io_destroy", + "sys_io_getevents", + "sys_io_submit", + "sys_io_cancel", + "sys_fadvise64", /* 250 */ + "sys_ni_syscall", + "sys_exit_group", + "sys_lookup_dcookie", + "sys_epoll_create", + "sys_epoll_ctl", /* 255 */ + "sys_epoll_wait", + "sys_remap_file_pages", + "sys_set_tid_address", + "sys_timer_create", + "sys_timer_settime", /* 260 */ + "sys_timer_gettime", + "sys_timer_getoverrun", + "sys_timer_delete", + "sys_clock_settime", + "sys_clock_gettime", /* 265 */ + "sys_clock_getres", + "sys_clock_nanosleep", + "sys_statfs64", + "sys_fstatfs64", + "sys_tgkill", /* 270 */ + "sys_utimes", + "sys_fadvise64_64", + "sys_ni_syscall" /* sys_vserver */ + }; + + uint32_t uEAX = CPUMGetGuestEAX(pVCpu); + switch (uEAX) + { + default: + if (uEAX < RT_ELEMENTS(apsz)) + Log(("REM: linux syscall %3d: %s (eip=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x ebp=%08x)\n", + uEAX, apsz[uEAX], CPUMGetGuestEIP(pVCpu), CPUMGetGuestEBX(pVCpu), CPUMGetGuestECX(pVCpu), + CPUMGetGuestEDX(pVCpu), CPUMGetGuestESI(pVCpu), CPUMGetGuestEDI(pVCpu), CPUMGetGuestEBP(pVCpu))); + else + Log(("eip=%08x: linux syscall %d (#%x) unknown\n", CPUMGetGuestEIP(pVCpu), uEAX, uEAX)); + break; + + } +} + + +/** + * Dumps an OpenBSD system call. + * @param pVCpu VMCPU handle. + */ +void remR3DumpOBsdSyscall(PVMCPU pVCpu) +{ + static const char *apsz[] = + { + "SYS_syscall", //0 + "SYS_exit", //1 + "SYS_fork", //2 + "SYS_read", //3 + "SYS_write", //4 + "SYS_open", //5 + "SYS_close", //6 + "SYS_wait4", //7 + "SYS_8", + "SYS_link", //9 + "SYS_unlink", //10 + "SYS_11", + "SYS_chdir", //12 + "SYS_fchdir", //13 + "SYS_mknod", //14 + "SYS_chmod", //15 + "SYS_chown", //16 + "SYS_break", //17 + "SYS_18", + "SYS_19", + "SYS_getpid", //20 + "SYS_mount", //21 + "SYS_unmount", //22 + "SYS_setuid", //23 + "SYS_getuid", //24 + "SYS_geteuid", //25 + "SYS_ptrace", //26 + "SYS_recvmsg", //27 + "SYS_sendmsg", //28 + "SYS_recvfrom", //29 + "SYS_accept", //30 + "SYS_getpeername", //31 + "SYS_getsockname", //32 + "SYS_access", //33 + "SYS_chflags", //34 + "SYS_fchflags", //35 + "SYS_sync", //36 + "SYS_kill", //37 + "SYS_38", + "SYS_getppid", //39 + "SYS_40", + "SYS_dup", //41 + "SYS_opipe", //42 + "SYS_getegid", //43 + "SYS_profil", //44 + "SYS_ktrace", //45 + "SYS_sigaction", //46 + "SYS_getgid", //47 + "SYS_sigprocmask", //48 + "SYS_getlogin", //49 + "SYS_setlogin", //50 + "SYS_acct", //51 + "SYS_sigpending", //52 + "SYS_osigaltstack", //53 + "SYS_ioctl", //54 + "SYS_reboot", //55 + "SYS_revoke", //56 + "SYS_symlink", //57 + "SYS_readlink", //58 + "SYS_execve", //59 + "SYS_umask", //60 + "SYS_chroot", //61 + "SYS_62", + "SYS_63", + "SYS_64", + "SYS_65", + "SYS_vfork", //66 + "SYS_67", + "SYS_68", + "SYS_sbrk", //69 + "SYS_sstk", //70 + "SYS_61", + "SYS_vadvise", //72 + "SYS_munmap", //73 + "SYS_mprotect", //74 + "SYS_madvise", //75 + "SYS_76", + "SYS_77", + "SYS_mincore", //78 + "SYS_getgroups", //79 + "SYS_setgroups", //80 + "SYS_getpgrp", //81 + "SYS_setpgid", //82 + "SYS_setitimer", //83 + "SYS_84", + "SYS_85", + "SYS_getitimer", //86 + "SYS_87", + "SYS_88", + "SYS_89", + "SYS_dup2", //90 + "SYS_91", + "SYS_fcntl", //92 + "SYS_select", //93 + "SYS_94", + "SYS_fsync", //95 + "SYS_setpriority", //96 + "SYS_socket", //97 + "SYS_connect", //98 + "SYS_99", + "SYS_getpriority", //100 + "SYS_101", + "SYS_102", + "SYS_sigreturn", //103 + "SYS_bind", //104 + "SYS_setsockopt", //105 + "SYS_listen", //106 + "SYS_107", + "SYS_108", + "SYS_109", + "SYS_110", + "SYS_sigsuspend", //111 + "SYS_112", + "SYS_113", + "SYS_114", + "SYS_115", + "SYS_gettimeofday", //116 + "SYS_getrusage", //117 + "SYS_getsockopt", //118 + "SYS_119", + "SYS_readv", //120 + "SYS_writev", //121 + "SYS_settimeofday", //122 + "SYS_fchown", //123 + "SYS_fchmod", //124 + "SYS_125", + "SYS_setreuid", //126 + "SYS_setregid", //127 + "SYS_rename", //128 + "SYS_129", + "SYS_130", + "SYS_flock", //131 + "SYS_mkfifo", //132 + "SYS_sendto", //133 + "SYS_shutdown", //134 + "SYS_socketpair", //135 + "SYS_mkdir", //136 + "SYS_rmdir", //137 + "SYS_utimes", //138 + "SYS_139", + "SYS_adjtime", //140 + "SYS_141", + "SYS_142", + "SYS_143", + "SYS_144", + "SYS_145", + "SYS_146", + "SYS_setsid", //147 + "SYS_quotactl", //148 + "SYS_149", + "SYS_150", + "SYS_151", + "SYS_152", + "SYS_153", + "SYS_154", + "SYS_nfssvc", //155 + "SYS_156", + "SYS_157", + "SYS_158", + "SYS_159", + "SYS_160", + "SYS_getfh", //161 + "SYS_162", + "SYS_163", + "SYS_164", + "SYS_sysarch", //165 + "SYS_166", + "SYS_167", + "SYS_168", + "SYS_169", + "SYS_170", + "SYS_171", + "SYS_172", + "SYS_pread", //173 + "SYS_pwrite", //174 + "SYS_175", + "SYS_176", + "SYS_177", + "SYS_178", + "SYS_179", + "SYS_180", + "SYS_setgid", //181 + "SYS_setegid", //182 + "SYS_seteuid", //183 + "SYS_lfs_bmapv", //184 + "SYS_lfs_markv", //185 + "SYS_lfs_segclean", //186 + "SYS_lfs_segwait", //187 + "SYS_188", + "SYS_189", + "SYS_190", + "SYS_pathconf", //191 + "SYS_fpathconf", //192 + "SYS_swapctl", //193 + "SYS_getrlimit", //194 + "SYS_setrlimit", //195 + "SYS_getdirentries", //196 + "SYS_mmap", //197 + "SYS___syscall", //198 + "SYS_lseek", //199 + "SYS_truncate", //200 + "SYS_ftruncate", //201 + "SYS___sysctl", //202 + "SYS_mlock", //203 + "SYS_munlock", //204 + "SYS_205", + "SYS_futimes", //206 + "SYS_getpgid", //207 + "SYS_xfspioctl", //208 + "SYS_209", + "SYS_210", + "SYS_211", + "SYS_212", + "SYS_213", + "SYS_214", + "SYS_215", + "SYS_216", + "SYS_217", + "SYS_218", + "SYS_219", + "SYS_220", + "SYS_semget", //221 + "SYS_222", + "SYS_223", + "SYS_224", + "SYS_msgget", //225 + "SYS_msgsnd", //226 + "SYS_msgrcv", //227 + "SYS_shmat", //228 + "SYS_229", + "SYS_shmdt", //230 + "SYS_231", + "SYS_clock_gettime", //232 + "SYS_clock_settime", //233 + "SYS_clock_getres", //234 + "SYS_235", + "SYS_236", + "SYS_237", + "SYS_238", + "SYS_239", + "SYS_nanosleep", //240 + "SYS_241", + "SYS_242", + "SYS_243", + "SYS_244", + "SYS_245", + "SYS_246", + "SYS_247", + "SYS_248", + "SYS_249", + "SYS_minherit", //250 + "SYS_rfork", //251 + "SYS_poll", //252 + "SYS_issetugid", //253 + "SYS_lchown", //254 + "SYS_getsid", //255 + "SYS_msync", //256 + "SYS_257", + "SYS_258", + "SYS_259", + "SYS_getfsstat", //260 + "SYS_statfs", //261 + "SYS_fstatfs", //262 + "SYS_pipe", //263 + "SYS_fhopen", //264 + "SYS_265", + "SYS_fhstatfs", //266 + "SYS_preadv", //267 + "SYS_pwritev", //268 + "SYS_kqueue", //269 + "SYS_kevent", //270 + "SYS_mlockall", //271 + "SYS_munlockall", //272 + "SYS_getpeereid", //273 + "SYS_274", + "SYS_275", + "SYS_276", + "SYS_277", + "SYS_278", + "SYS_279", + "SYS_280", + "SYS_getresuid", //281 + "SYS_setresuid", //282 + "SYS_getresgid", //283 + "SYS_setresgid", //284 + "SYS_285", + "SYS_mquery", //286 + "SYS_closefrom", //287 + "SYS_sigaltstack", //288 + "SYS_shmget", //289 + "SYS_semop", //290 + "SYS_stat", //291 + "SYS_fstat", //292 + "SYS_lstat", //293 + "SYS_fhstat", //294 + "SYS___semctl", //295 + "SYS_shmctl", //296 + "SYS_msgctl", //297 + "SYS_MAXSYSCALL", //298 + //299 + //300 + }; + uint32_t uEAX; + if (!LogIsEnabled()) + return; + uEAX = CPUMGetGuestEAX(pVCpu); + switch (uEAX) + { + default: + if (uEAX < RT_ELEMENTS(apsz)) + { + uint32_t au32Args[8] = {0}; + PGMPhysSimpleReadGCPtr(pVCpu, au32Args, CPUMGetGuestESP(pVCpu), sizeof(au32Args)); + RTLogPrintf("REM: OpenBSD syscall %3d: %s (eip=%08x %08x %08x %08x %08x %08x %08x %08x %08x)\n", + uEAX, apsz[uEAX], CPUMGetGuestEIP(pVCpu), au32Args[0], au32Args[1], au32Args[2], au32Args[3], + au32Args[4], au32Args[5], au32Args[6], au32Args[7]); + } + else + RTLogPrintf("eip=%08x: OpenBSD syscall %d (#%x) unknown!!\n", CPUMGetGuestEIP(pVCpu), uEAX, uEAX); + break; + } +} + + +#if defined(IPRT_NO_CRT) && defined(RT_OS_WINDOWS) && defined(RT_ARCH_X86) +/** + * The Dll main entry point (stub). + */ +bool __stdcall _DllMainCRTStartup(void *hModule, uint32_t dwReason, void *pvReserved) +{ + return true; +} + +void *memcpy(void *dst, const void *src, size_t size) +{ + uint8_t*pbDst = dst, *pbSrc = src; + while (size-- > 0) + *pbDst++ = *pbSrc++; + return dst; +} + +#endif + +void cpu_smm_update(CPUX86State *env) +{ +} |