diff options
Diffstat (limited to '')
| -rw-r--r-- | src/VBox/VMM/testcase/tstMicroRC.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/VBox/VMM/testcase/tstMicroRC.cpp b/src/VBox/VMM/testcase/tstMicroRC.cpp new file mode 100644 index 00000000..c5d85ff5 --- /dev/null +++ b/src/VBox/VMM/testcase/tstMicroRC.cpp @@ -0,0 +1,268 @@ +/* $Id: tstMicroRC.cpp $ */ +/** @file + * Micro Testcase, profiling special CPU operations - GC Code (hacks). + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program 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 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <VBox/vmm/vm.h> +#include <VBox/vmm/vmm.h> +#include <VBox/vmm/selm.h> +#include "tstMicro.h" + +#include <iprt/errcore.h> +#include <iprt/asm-amd64-x86.h> +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/string.h> + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +RT_C_DECLS_BEGIN +DECLEXPORT(int) tstMicroRC(PTSTMICRO pTst, unsigned uTestcase); +RT_C_DECLS_END + + +/** + * Save and load our IDT. + * + * @param pTst Pointer to the instance data. + * @param iIDT The index of the IDT entry which should be hooked. + */ +void idtInstall(PTSTMICRO pTst, int iIDT) +{ + RTIDTR Idtr; + ASMGetIDTR(&Idtr); + if (Idtr.pIdt == (uintptr_t)&pTst->aIDT[0]) + return; + pTst->OriginalIDTR.cbIdt = Idtr.cbIdt; + pTst->OriginalIDTR.pIdt = Idtr.pIdt; + + /* + * Copy the IDT. + */ + if (Idtr.cbIdt >= sizeof(pTst->aIDT)) + Idtr.cbIdt = sizeof(pTst->aIDT) - 1; + memcpy(&pTst->aIDT[0], (void *)Idtr.pIdt, Idtr.cbIdt + 1); + + + /* Hook up IDT entry. */ + if (iIDT >= 0) + { + uintptr_t uHandler = (uintptr_t)tstTrapHandlerNoErr; + if ( iIDT == 8 + || iIDT == 0xa + || iIDT == 0xb + || iIDT == 0xc + || iIDT == 0xd + || iIDT == 0xe + || iIDT == 0x11) + uHandler = (uintptr_t)tstTrapHandler; + pTst->aIDT[iIDT].Int.u16OffsetHigh = uHandler >> 16; + pTst->aIDT[iIDT].Int.u16OffsetLow = uHandler & 0xffff; + pTst->aIDT[iIDT].Int.u16SegSel = SELMGetHyperCS(&g_VM); + pTst->aIDT[iIDT].Int.u2DPL = 3; + pTst->aIDT[iIDT].Int.u1Present = 1; + pTst->aIDT[iIDT].Int.u1Fixed0 = 0; + pTst->aIDT[iIDT].Int.u1Fixed1 = 0; + pTst->aIDT[iIDT].Int.u1Fixed2 = 0; + pTst->aIDT[iIDT].Int.u1Fixed3 = 0; + pTst->aIDT[iIDT].Int.u1Fixed4 = 1; + pTst->aIDT[iIDT].Int.u1Fixed5 = 1; + pTst->aIDT[iIDT].Int.u132BitGate = 1; + pTst->aIDT[iIDT].Int.u1Fixed6 = 0; + pTst->aIDT[iIDT].Int.u5Reserved2 = 0; + } + + /* Install int 42h, R3 gate */ + pTst->aIDT[0x42].Int.u16OffsetHigh = (uintptr_t)tstInterrupt42 >> 16; + pTst->aIDT[0x42].Int.u16OffsetLow = (uintptr_t)tstInterrupt42 & 0xffff; + pTst->aIDT[0x42].Int.u16SegSel = SELMGetHyperCS(&g_VM); + pTst->aIDT[0x42].Int.u2DPL = 3; + pTst->aIDT[0x42].Int.u1Present = 1; + pTst->aIDT[0x42].Int.u1Fixed0 = 0; + pTst->aIDT[0x42].Int.u1Fixed1 = 0; + pTst->aIDT[0x42].Int.u1Fixed2 = 0; + pTst->aIDT[0x42].Int.u1Fixed3 = 0; + pTst->aIDT[0x42].Int.u1Fixed4 = 1; + pTst->aIDT[0x42].Int.u1Fixed5 = 1; + pTst->aIDT[0x42].Int.u132BitGate = 1; + pTst->aIDT[0x42].Int.u1Fixed6 = 0; + pTst->aIDT[0x42].Int.u5Reserved2 = 0; + + /* + * Load our IDT. + */ + Idtr.pIdt = (uintptr_t)&pTst->aIDT[0]; + ASMSetIDTR(&Idtr); + + RTIDTR Idtr2; + ASMGetIDTR(&Idtr2); + Assert(Idtr2.pIdt == (uintptr_t)&pTst->aIDT[0]); +} + + +/** + * Removes all trap overrides except for gate 42. + */ +DECLASM(void) idtOnly42(PTSTMICRO pTst) +{ + if (pTst->OriginalIDTR.pIdt) + memcpy(&pTst->aIDT[0], (void *)(uintptr_t)pTst->OriginalIDTR.pIdt, sizeof(VBOXIDTE) * 32); +} + + + +DECLEXPORT(int) tstMicroRC(PTSTMICRO pTst, unsigned uTestcase) +{ + RTLogPrintf("pTst=%p uTestcase=%d\n", pTst, uTestcase); + + /* + * Validate input. + */ + if (uTestcase >= TSTMICROTEST_MAX) + return VERR_INVALID_PARAMETER; + + /* + * Clear the results. + */ + pTst->u64TSCR0Start = 0; + pTst->u64TSCRxStart = 0; + pTst->u64TSCR0Enter = 0; + pTst->u64TSCR0Exit = 0; + pTst->u64TSCRxEnd = 0; + pTst->u64TSCR0End = 0; + pTst->cHits = 0; + pTst->offEIPAdd = 0; + pTst->u32CR2 = 0; + pTst->u32EIP = 0; + pTst->u32ErrCd = 0; + PTSTMICRORESULT pRes = &pTst->aResults[uTestcase]; + memset(&pTst->aResults[uTestcase], 0, sizeof(pTst->aResults[uTestcase])); + + + /* + * Do the testcase. + */ + int rc = VINF_SUCCESS; + switch (uTestcase) + { + case TSTMICROTEST_OVERHEAD: + { + tstOverhead(pTst); + break; + } + + case TSTMICROTEST_INVLPG_0: + { + tstInvlpg0(pTst); + break; + } + + case TSTMICROTEST_INVLPG_EIP: + { + tstInvlpgEIP(pTst); + break; + } + + case TSTMICROTEST_INVLPG_ESP: + { + tstInvlpgESP(pTst); + break; + } + + case TSTMICROTEST_CR3_RELOAD: + { + tstCR3Reload(pTst); + break; + } + + case TSTMICROTEST_WP_DISABLE: + { + tstWPDisable(pTst); + break; + } + + case TSTMICROTEST_WP_ENABLE: + { + tstWPEnable(pTst); + break; + } + + case TSTMICROTEST_PF_R0: + { + idtInstall(pTst, 0xe); + pTst->offEIPAdd = 2; + rc = tstPFR0(pTst); + break; + } + + case TSTMICROTEST_PF_R1: + { + idtInstall(pTst, 0xe); + pTst->offEIPAdd = 2; + rc = tstPFR1(pTst); + break; + } + + case TSTMICROTEST_PF_R2: + { + idtInstall(pTst, 0xe); + pTst->offEIPAdd = 2; + rc = tstPFR2(pTst); + break; + } + + case TSTMICROTEST_PF_R3: + { + idtInstall(pTst, 0xe); + pTst->offEIPAdd = 2; + rc = tstPFR3(pTst); + break; + } + + } + + /* + * Compute the results. + */ + if (pTst->u64TSCR0End && pTst->u64TSCR0Start) + pRes->cTotalTicks = pTst->u64TSCR0End - pTst->u64TSCR0Start - pTst->u64Overhead; + if (pTst->u64TSCRxStart && pTst->u64TSCR0Start) + pRes->cToRxFirstTicks = pTst->u64TSCRxStart - pTst->u64TSCR0Start - pTst->u64Overhead; + if (pTst->u64TSCR0Enter && pTst->u64TSCRxStart) + pRes->cTrapTicks = pTst->u64TSCR0Enter - pTst->u64TSCRxStart - pTst->u64Overhead; + if (pTst->u64TSCRxEnd && pTst->u64TSCR0Exit) + pRes->cToRxTrapTicks = pTst->u64TSCRxEnd - pTst->u64TSCR0Exit - pTst->u64Overhead; + if (pTst->u64TSCR0End && pTst->u64TSCRxEnd) + pRes->cToR0Ticks = pTst->u64TSCR0End - pTst->u64TSCRxEnd - pTst->u64Overhead; + + return rc; +} + |