PGMGC.cpp revision aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PGM - Page Monitor, Guest Context.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Copyright (C) 2006-2007 innotek GmbH
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * available from http://www.virtualbox.org. This file is free software;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License as published by the Free Software Foundation,
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * distribution. VirtualBox OSE is distributed in the hope that it will
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * be useful, but WITHOUT ANY WARRANTY of any kind.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Header Files *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Internal Functions *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Shadow - 32-bit mode
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsync/* Guest - real mode */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync/* Guest - protected mode */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* Guest - 32-bit mode */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* !RT_ARCH_AMD64 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Shadow - PAE mode
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* Guest - real mode */
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* Guest - protected mode */
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* Guest - 32-bit mode */
fdea543f71872a3ec3909536a4fce37ab7aa3a8bvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync/* Guest - PAE mode */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Shadow - AMD64 mode
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync/* Guest - real mode */
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_REAL(name)
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync/* Guest - protected mode */
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_PROT(name)
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync/* Guest - AMD64 mode */
26824086a3f6b36cd911058f1d9b4c0b944706fbvboxsync#define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Temporarily maps one guest page specified by GC physical address.
b8aaccdbdd143967110d499670605dd7ff6ecc72vboxsync * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * reused after 8 mappings (or perhaps a few more if you score with the cache).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys GC Physical address of the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param ppv Where to store the address of the mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPGMGCDECL(int) PGMGCDynMapGCPage(PVM pVM, RTGCPHYS GCPhys, void **ppv)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%VGp\n", GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Get the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Pass it on to PGMGCDynMapHCPage.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log(("PGMGCDynMapGCPage: GCPhys=%VGp HCPhys=%VHp\n", GCPhys, HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Temporarily maps one guest page specified by unaligned GC physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * reused after 8 mappings (or perhaps a few more if you score with the cache).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The caller is aware that only the speicifed page is mapped and that really bad things
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * will happen if writing beyond the page!
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys GC Physical address within the page to be mapped.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param ppv Where to store the address of the mapping address corresponding to GCPhys.
3ecf9412133496b2aeb090cfd33a286404ec59fbvboxsyncPGMGCDECL(int) PGMGCDynMapGCPageEx(PVM pVM, RTGCPHYS GCPhys, void **ppv)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Get the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Pass it on to PGMGCDynMapHCPage.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync *ppv = (void *)((uintptr_t)*ppv | (GCPhys & PAGE_OFFSET_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Temporarily maps one host page specified by HC physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * reused after 8 mappings (or perhaps a few more if you score with the cache).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pVM VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys HC Physical address of the page.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param ppv Where to store the address of the mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPGMGCDECL(int) PGMGCDynMapHCPage(PVM pVM, RTHCPHYS HCPhys, void **ppv)
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync AssertMsg(!(HCPhys & PAGE_OFFSET_MASK), ("HCPhys=%VHp\n", HCPhys));
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Check the cache.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync register unsigned iCache;
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync if ( pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 0] == HCPhys
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 1] == HCPhys
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 2] == HCPhys
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync || pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 3] == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync static const uint8_t au8Trans[MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT][ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache)] =
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int iPage = au8Trans[pVM->pgm.s.iDynPageMapLast][iCache];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d iCache=%d\n", HCPhys, pv, iPage, iCache));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) == 4);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatDynMapCacheMisses);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Update the page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync register unsigned iPage = pVM->pgm.s.iDynPageMapLast;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pVM->pgm.s.iDynPageMapLast = iPage = (iPage + 1) & ((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) == 8);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pVM->pgm.s.aHCPhysDynPageMapCache[iPage & (ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) - 1)] = HCPhys;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pVM->pgm.s.paDynPageMap32BitPTEsGC[iPage].u = (uint32_t)HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D;
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync pVM->pgm.s.paDynPageMapPaePTEsGC[iPage].u = HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D;
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d\n", HCPhys, pv, iPage));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Emulation of the invlpg instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * @param pVM VM handle.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param GCPtrPage Page to invalidate.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPGMGCDECL(int) PGMGCInvalidatePage(PVM pVM, RTGCPTR GCPtrPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("PGMGCInvalidatePage: GCPtrPage=%VGv\n", GCPtrPage));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check for conflicts and pending CR3 monitoring updates.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo && (PGMGstGetPDE(pVM, GCPtrPage) & X86_PDE_P) - FIX THIS NOW!!! */ )
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("PGMGCInvalidatePage: PGM_SYNC_MONITOR_CR3 -> reinterpret instruction in HC\n"));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync /** @todo counter for these... */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Notify the recompiler so it can record this instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Failure happens when it's out of space. We'll return to HC in that case.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGM_BTH_PFN(InvalidatePage, pVM)(pVM, GCPtrPage);