/* $Id: PGMGC.cpp 4071 2007-08-07 17:07:59Z vboxsync $ */ /** @file * PGM - Page Monitor, Guest Context. */ /* * Copyright (C) 2006-2007 innotek GmbH * * 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 as published by the Free Software Foundation, * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE * distribution. VirtualBox OSE is distributed in the hope that it will * be useful, but WITHOUT ANY WARRANTY of any kind. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_PGM #include #include #include #include #include #include #include #include #include "PGMInternal.h" #include #include #include #include #include #include #include #include /******************************************************************************* * Internal Functions * *******************************************************************************/ #ifndef RT_ARCH_AMD64 /* * Shadow - 32-bit mode */ #define PGM_SHW_TYPE PGM_TYPE_32BIT #define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name) #include "PGMGCShw.h" /* Guest - real mode */ #define PGM_GST_TYPE PGM_TYPE_REAL #define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name) #include "PGMGCGst.h" #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - protected mode */ #define PGM_GST_TYPE PGM_TYPE_PROT #define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name) #include "PGMGCGst.h" #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - 32-bit mode */ #define PGM_GST_TYPE PGM_TYPE_32BIT #define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name) #include "PGMGCGst.h" #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME #undef PGM_SHW_TYPE #undef PGM_SHW_NAME #endif /* !RT_ARCH_AMD64 */ /* * Shadow - PAE mode */ #define PGM_SHW_TYPE PGM_TYPE_PAE #define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name) #include "PGMGCShw.h" /* Guest - real mode */ #define PGM_GST_TYPE PGM_TYPE_REAL #define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name) #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - protected mode */ #define PGM_GST_TYPE PGM_TYPE_PROT #define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name) #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - 32-bit mode */ #define PGM_GST_TYPE PGM_TYPE_32BIT #define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name) #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - PAE mode */ #define PGM_GST_TYPE PGM_TYPE_PAE #define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name) #include "PGMGCGst.h" #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME #undef PGM_SHW_TYPE #undef PGM_SHW_NAME /* * Shadow - AMD64 mode */ #define PGM_SHW_TYPE PGM_TYPE_AMD64 #define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name) #include "PGMGCShw.h" /* Guest - real mode */ #define PGM_GST_TYPE PGM_TYPE_REAL #define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_REAL(name) #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_NAME #undef PGM_GST_TYPE /* Guest - protected mode */ #define PGM_GST_TYPE PGM_TYPE_PROT #define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_PROT(name) #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME /* Guest - AMD64 mode */ #define PGM_GST_TYPE PGM_TYPE_AMD64 #define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name) #define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name) #include "PGMGCGst.h" #include "PGMGCBth.h" #undef PGM_BTH_NAME #undef PGM_GST_TYPE #undef PGM_GST_NAME #undef PGM_SHW_TYPE #undef PGM_SHW_NAME /** * Temporarily maps one guest page specified by GC physical address. * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages. * * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is * reused after 8 mappings (or perhaps a few more if you score with the cache). * * @returns VBox status. * @param pVM VM handle. * @param GCPhys GC Physical address of the page. * @param ppv Where to store the address of the mapping. */ PGMGCDECL(int) PGMGCDynMapGCPage(PVM pVM, RTGCPHYS GCPhys, void **ppv) { AssertMsg(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%VGp\n", GCPhys)); /* * Get the ram range. */ PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesGC; while (pRam && GCPhys - pRam->GCPhys >= pRam->cb) pRam = pRam->pNextGC; if (!pRam) { AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys)); return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS; } /* * Pass it on to PGMGCDynMapHCPage. */ RTHCPHYS HCPhys = pRam->aHCPhys[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT] & X86_PTE_PAE_PG_MASK; //Log(("PGMGCDynMapGCPage: GCPhys=%VGp HCPhys=%VHp\n", GCPhys, HCPhys)); return PGMGCDynMapHCPage(pVM, HCPhys, ppv); } /** * Temporarily maps one guest page specified by unaligned GC physical address. * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages. * * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is * reused after 8 mappings (or perhaps a few more if you score with the cache). * * The caller is aware that only the speicifed page is mapped and that really bad things * will happen if writing beyond the page! * * @returns VBox status. * @param pVM VM handle. * @param GCPhys GC Physical address within the page to be mapped. * @param ppv Where to store the address of the mapping address corresponding to GCPhys. */ PGMGCDECL(int) PGMGCDynMapGCPageEx(PVM pVM, RTGCPHYS GCPhys, void **ppv) { /* * Get the ram range. */ PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesGC; while (pRam && GCPhys - pRam->GCPhys >= pRam->cb) pRam = pRam->pNextGC; if (!pRam) { AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys)); return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS; } /* * Pass it on to PGMGCDynMapHCPage. */ RTHCPHYS HCPhys = pRam->aHCPhys[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT] & X86_PTE_PAE_PG_MASK; int rc = PGMGCDynMapHCPage(pVM, HCPhys, ppv); if (VBOX_SUCCESS(rc)) *ppv = (void *)((uintptr_t)*ppv | (GCPhys & PAGE_OFFSET_MASK)); return rc; } /** * Temporarily maps one host page specified by HC physical address. * * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is * reused after 8 mappings (or perhaps a few more if you score with the cache). * * @returns VBox status. * @param pVM VM handle. * @param HCPhys HC Physical address of the page. * @param ppv Where to store the address of the mapping. */ PGMGCDECL(int) PGMGCDynMapHCPage(PVM pVM, RTHCPHYS HCPhys, void **ppv) { AssertMsg(!(HCPhys & PAGE_OFFSET_MASK), ("HCPhys=%VHp\n", HCPhys)); /* * Check the cache. */ register unsigned iCache; if ( pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 0] == HCPhys || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 1] == HCPhys || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 2] == HCPhys || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 3] == HCPhys) { static const uint8_t au8Trans[MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT][ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache)] = { { 0, 5, 6, 7 }, { 0, 1, 6, 7 }, { 0, 1, 2, 7 }, { 0, 1, 2, 3 }, { 4, 1, 2, 3 }, { 4, 5, 2, 3 }, { 4, 5, 6, 3 }, { 4, 5, 6, 7 }, }; Assert(ELEMENTS(au8Trans) == 8); Assert(ELEMENTS(au8Trans[0]) == 4); int iPage = au8Trans[pVM->pgm.s.iDynPageMapLast][iCache]; void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT); *ppv = pv; STAM_COUNTER_INC(&pVM->pgm.s.StatDynMapCacheHits); //Log(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d iCache=%d\n", HCPhys, pv, iPage, iCache)); return VINF_SUCCESS; } Assert(ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) == 4); STAM_COUNTER_INC(&pVM->pgm.s.StatDynMapCacheMisses); /* * Update the page tables. */ register unsigned iPage = pVM->pgm.s.iDynPageMapLast; pVM->pgm.s.iDynPageMapLast = iPage = (iPage + 1) & ((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) - 1); Assert((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) == 8); pVM->pgm.s.aHCPhysDynPageMapCache[iPage & (ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) - 1)] = HCPhys; pVM->pgm.s.paDynPageMap32BitPTEsGC[iPage].u = (uint32_t)HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D; pVM->pgm.s.paDynPageMapPaePTEsGC[iPage].u = HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D; void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT); *ppv = pv; ASMInvalidatePage(pv); Log4(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d\n", HCPhys, pv, iPage)); return VINF_SUCCESS; } /** * Emulation of the invlpg instruction. * * @returns VBox status code suitable for scheduling. * @param pVM VM handle. * @param GCPtrPage Page to invalidate. */ PGMGCDECL(int) PGMGCInvalidatePage(PVM pVM, RTGCPTR GCPtrPage) { LogFlow(("PGMGCInvalidatePage: GCPtrPage=%VGv\n", GCPtrPage)); STAM_PROFILE_START(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a); /* * Check for conflicts and pending CR3 monitoring updates. */ if (!pVM->pgm.s.fMappingsFixed) { if ( pgmGetMapping(pVM, GCPtrPage) /** @todo && (PGMGstGetPDE(pVM, GCPtrPage) & X86_PDE_P) - FIX THIS NOW!!! */ ) { LogFlow(("PGMGCInvalidatePage: Conflict!\n")); VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3); STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a); return VINF_PGM_SYNC_CR3; } if (pVM->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3) { LogFlow(("PGMGCInvalidatePage: PGM_SYNC_MONITOR_CR3 -> reinterpret instruction in HC\n")); STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a); /** @todo counter for these... */ return VINF_EM_RAW_EMULATE_INSTR; } } /* * Notify the recompiler so it can record this instruction. * Failure happens when it's out of space. We'll return to HC in that case. */ int rc = REMNotifyInvalidatePage(pVM, GCPtrPage); if (rc == VINF_SUCCESS) rc = PGM_BTH_PFN(InvalidatePage, pVM)(pVM, GCPtrPage); STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a); return rc; }