/* $Id: MMAll.cpp 12989 2008-10-06 02:15:39Z vboxsync $ */ /** @file * MM - Memory Manager - Any Context. */ /* * Copyright (C) 2006-2007 Sun Microsystems, Inc. * * 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. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 USA or visit http://www.sun.com if you need * additional information or have any questions. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_MM_HYPER #include #include "MMInternal.h" #include #include #include /** * Lookup a host context ring-3 address. * * @returns Pointer to the corresponding lookup record. * @returns NULL on failure. * @param pVM The VM handle. * @param R3Ptr The host context ring-3 address to lookup. * @param poff Where to store the offset into the HMA memory chunk. */ DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupR3(PVM pVM, RTR3PTR R3Ptr, uint32_t *poff) { /** @todo cache last lookup this stuff ain't cheap! */ PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper); for (;;) { switch (pLookup->enmType) { case MMLOOKUPHYPERTYPE_LOCKED: { const uint32_t off = (RTR3UINTPTR)R3Ptr - (RTR3UINTPTR)pLookup->u.Locked.pvR3; if (off < pLookup->cb) { *poff = off; return pLookup; } break; } case MMLOOKUPHYPERTYPE_HCPHYS: { const uint32_t off = (RTR3UINTPTR)R3Ptr - (RTR3UINTPTR)pLookup->u.HCPhys.pvR3; if (off < pLookup->cb) { *poff = off; return pLookup; } break; } case MMLOOKUPHYPERTYPE_GCPHYS: /* (for now we'll not allow these kind of conversions) */ case MMLOOKUPHYPERTYPE_MMIO2: case MMLOOKUPHYPERTYPE_DYNAMIC: break; default: AssertMsgFailed(("enmType=%d\n", pLookup->enmType)); break; } /* next */ if (pLookup->offNext == (int32_t)NIL_OFFSET) break; pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext); } AssertMsgFailed(("R3Ptr=%p is not inside the hypervisor memory area!\n", R3Ptr)); return NULL; } /** * Lookup a host context ring-0 address. * * @returns Pointer to the corresponding lookup record. * @returns NULL on failure. * @param pVM The VM handle. * @param R0Ptr The host context ring-0 address to lookup. * @param poff Where to store the offset into the HMA memory chunk. */ DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupR0(PVM pVM, RTR0PTR R0Ptr, uint32_t *poff) { AssertCompile(sizeof(RTR0PTR) == sizeof(RTR3PTR)); /* * Translate Ring-0 VM addresses into Ring-3 VM addresses before feeding it to mmHyperLookupR3. */ /** @todo fix this properly; the ring 0 pVM address differs from the R3 one. (#1865) */ RTR0UINTPTR offVM = (RTR0UINTPTR)R0Ptr - (RTR0UINTPTR)pVM->pVMR0; RTR3PTR R3Ptr = offVM < sizeof(*pVM) ? (RTR3PTR)((RTR3UINTPTR)pVM->pVMR3 + offVM) : (RTR3PTR)R0Ptr; return mmHyperLookupR3(pVM, R3Ptr, poff); } /** * Lookup a raw-mode context address. * * @returns Pointer to the corresponding lookup record. * @returns NULL on failure. * @param pVM The VM handle. * @param RCPtr The raw-mode context address to lookup. * @param poff Where to store the offset into the HMA memory chunk. */ DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupRC(PVM pVM, RTRCPTR RCPtr, uint32_t *poff) { /** @todo cache last lookup this stuff ain't cheap! */ unsigned offRC = (RTRCUINTPTR)RCPtr - (RTGCUINTPTR)pVM->mm.s.pvHyperAreaGC; PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper); for (;;) { const uint32_t off = offRC - pLookup->off; if (off < pLookup->cb) { switch (pLookup->enmType) { case MMLOOKUPHYPERTYPE_LOCKED: case MMLOOKUPHYPERTYPE_HCPHYS: *poff = off; return pLookup; default: break; } AssertMsgFailed(("enmType=%d\n", pLookup->enmType)); return NULL; } /* next */ if (pLookup->offNext == (int32_t)NIL_OFFSET) break; pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext); } AssertMsgFailed(("GCPtr=%p is not inside the hypervisor memory area!\n", RCPtr)); return NULL; } /** * Lookup a current context address. * * @returns Pointer to the corresponding lookup record. * @returns NULL on failure. * @param pVM The VM handle. * @param pv The current context address to lookup. * @param poff Where to store the offset into the HMA memory chunk. */ DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupCC(PVM pVM, void *pv, uint32_t *poff) { #ifdef IN_GC return mmHyperLookupRC(pVM, (RTRCPTR)pv, poff); #elif defined(IN_RING0) return mmHyperLookupR0(pVM, pv, poff); #else return mmHyperLookupR3(pVM, pv, poff); #endif } /** * Calculate the host context ring-3 address of an offset into the HMA memory chunk. * * @returns the host context ring-3 address. * @param pLookup The HMA lookup record. * @param off The offset into the HMA memory chunk. */ DECLINLINE(RTR3PTR) mmHyperLookupCalcR3(PMMLOOKUPHYPER pLookup, uint32_t off) { switch (pLookup->enmType) { case MMLOOKUPHYPERTYPE_LOCKED: return (RTR3PTR)((RTR3UINTPTR)pLookup->u.Locked.pvR3 + off); case MMLOOKUPHYPERTYPE_HCPHYS: return (RTR3PTR)((RTR3UINTPTR)pLookup->u.HCPhys.pvR3 + off); default: AssertMsgFailed(("enmType=%d\n", pLookup->enmType)); return NIL_RTR3PTR; } } /** * Calculate the host context ring-0 address of an offset into the HMA memory chunk. * * @returns the host context ring-0 address. * @param pLookup The HMA lookup record. * @param off The offset into the HMA memory chunk. */ DECLINLINE(RTR0PTR) mmHyperLookupCalcR0(PMMLOOKUPHYPER pLookup, uint32_t off) { switch (pLookup->enmType) { case MMLOOKUPHYPERTYPE_LOCKED: if (pLookup->u.Locked.pvR0) return (RTR0PTR)((RTR0UINTPTR)pLookup->u.Locked.pvR0 + off); /** @todo #1865: accessing ring-3 memory (LOCKED)! */ return (RTR0PTR)((RTR3UINTPTR)pLookup->u.Locked.pvR3 + off); case MMLOOKUPHYPERTYPE_HCPHYS: /** @todo #1865: accessing ring-3 memory (HCPHYS)! */ return (RTR0PTR)((RTR3UINTPTR)pLookup->u.HCPhys.pvR3 + off); default: AssertMsgFailed(("enmType=%d\n", pLookup->enmType)); return NIL_RTR0PTR; } } /** * Calculate the raw-mode context address of an offset into the HMA memory chunk. * * @returns the raw-mode context base address. * @param pVM The the VM handle. * @param pLookup The HMA lookup record. * @param off The offset into the HMA memory chunk. */ DECLINLINE(RTRCPTR) mmHyperLookupCalcRC(PVM pVM, PMMLOOKUPHYPER pLookup, uint32_t off) { return (RTRCPTR)((RTGCUINTPTR)pVM->mm.s.pvHyperAreaGC + pLookup->off + off); } /** * Calculate the guest context address of an offset into the HMA memory chunk. * * @returns the guest context base address. * @param pVM The the VM handle. * @param pLookup The HMA lookup record. * @param off The offset into the HMA memory chunk. */ DECLINLINE(void *) mmHyperLookupCalcCC(PVM pVM, PMMLOOKUPHYPER pLookup, uint32_t off) { #ifdef IN_GC return (void *)mmHyperLookupCalcRC(pVM, pLookup, off); #elif defined(IN_RING0) return mmHyperLookupCalcR0(pLookup, off); #else return mmHyperLookupCalcR3(pLookup, off); #endif } /** * Converts a ring-0 host context address in the Hypervisor memory region to a ring-3 host context address. * * @returns ring-3 host context address. * @param pVM The VM to operate on. * @param R0Ptr The ring-0 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTR3PTR) MMHyperR0ToR3(PVM pVM, RTR0PTR R0Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off); if (pLookup) return mmHyperLookupCalcR3(pLookup, off); return NIL_RTR3PTR; } /** * Converts a ring-0 host context address in the Hypervisor memory region to a raw-mode context address. * * @returns raw-mode context address. * @param pVM The VM to operate on. * @param R0Ptr The ring-0 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTRCPTR) MMHyperR0ToRC(PVM pVM, RTR0PTR R0Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off); if (pLookup) return mmHyperLookupCalcRC(pVM, pLookup, off); return NIL_RTRCPTR; } #ifndef IN_RING0 /** * Converts a ring-0 host context address in the Hypervisor memory region to a current context address. * * @returns current context address. * @param pVM The VM to operate on. * @param R0Ptr The ring-0 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(void *) MMHyperR0ToCC(PVM pVM, RTR0PTR R0Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off); if (pLookup) return mmHyperLookupCalcCC(pVM, pLookup, off); return NULL; } #endif /** * Converts a ring-3 host context address in the Hypervisor memory region to a ring-0 host context address. * * @returns ring-0 host context address. * @param pVM The VM to operate on. * @param R3Ptr The ring-3 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTR0PTR) MMHyperR3ToR0(PVM pVM, RTR3PTR R3Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off); if (pLookup) return mmHyperLookupCalcR0(pLookup, off); AssertMsgFailed(("R3Ptr=%p is not inside the hypervisor memory area!\n", R3Ptr)); return NIL_RTR0PTR; } /** * Converts a ring-3 host context address in the Hypervisor memory region to a guest context address. * * @returns guest context address. * @param pVM The VM to operate on. * @param R3Ptr The ring-3 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTRCPTR) MMHyperR3ToRC(PVM pVM, RTR3PTR R3Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off); if (pLookup) return mmHyperLookupCalcRC(pVM, pLookup, off); AssertMsgFailed(("R3Ptr=%p is not inside the hypervisor memory area!\n", R3Ptr)); return NIL_RTRCPTR; } /** * Converts a ring-3 host context address in the Hypervisor memory region to a current context address. * * @returns current context address. * @param pVM The VM to operate on. * @param R3Ptr The ring-3 host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ #ifndef IN_RING3 VMMDECL(void *) MMHyperR3ToCC(PVM pVM, RTR3PTR R3Ptr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off); if (pLookup) return mmHyperLookupCalcCC(pVM, pLookup, off); return NULL; } #endif /** * Converts a raw-mode context address in the Hypervisor memory region to a ring-3 context address. * * @returns ring-3 host context address. * @param pVM The VM to operate on. * @param GCPtr The raw-mode context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTR3PTR) MMHyperRCToR3(PVM pVM, RTRCPTR RCPtr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off); if (pLookup) return mmHyperLookupCalcR3(pLookup, off); return NIL_RTR3PTR; } /** * Converts a raw-mode context address in the Hypervisor memory region to a ring-0 host context address. * * @returns ring-0 host context address. * @param pVM The VM to operate on. * @param RCPtr The raw-mode context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ VMMDECL(RTR0PTR) MMHyperRCToR0(PVM pVM, RTRCPTR RCPtr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off); if (pLookup) return mmHyperLookupCalcR0(pLookup, off); return NIL_RTR0PTR; } /** * Converts a raw-mode context address in the Hypervisor memory region to a current context address. * * @returns current context address. * @param pVM The VM to operate on. * @param RCPtr The raw-mode host context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ #ifndef IN_GC VMMDECL(void *) MMHyperRCToCC(PVM pVM, RTRCPTR RCPtr) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off); if (pLookup) return mmHyperLookupCalcCC(pVM, pLookup, off); return NULL; } #endif /** * Converts a current context address in the Hypervisor memory region to a ring-3 host context address. * * @returns ring-3 host context address. * @param pVM The VM to operate on. * @param pv The current context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ #ifndef IN_RING3 VMMDECL(RTR3PTR) MMHyperCCToR3(PVM pVM, void *pv) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off); if (pLookup) return mmHyperLookupCalcR3(pLookup, off); return NIL_RTR3PTR; } #endif /** * Converts a current context address in the Hypervisor memory region to a ring-0 host context address. * * @returns ring-0 host context address. * @param pVM The VM to operate on. * @param pv The current context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ #ifndef IN_RING0 VMMDECL(RTR0PTR) MMHyperCCToR0(PVM pVM, void *pv) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off); if (pLookup) return mmHyperLookupCalcR0(pLookup, off); return NIL_RTR0PTR; } #endif /** * Converts a current context address in the Hypervisor memory region to a raw-mode context address. * * @returns guest context address. * @param pVM The VM to operate on. * @param pv The current context address. * You'll be damned if this is not in the HMA! :-) * @thread The Emulation Thread. */ #ifndef IN_GC VMMDECL(RTRCPTR) MMHyperCCToRC(PVM pVM, void *pv) { uint32_t off; PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off); if (pLookup) return mmHyperLookupCalcRC(pVM, pLookup, off); return NIL_RTRCPTR; } #endif