/* $Id: tstX86-1.cpp 39084 2011-10-22 00:37:15Z vboxsync $ */ /** @file * X86 instruction set exploration/testcase #1. */ /* * Copyright (C) 2011 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. */ /******************************************************************************* * Header Files * *******************************************************************************/ #include #include #include #include #include #ifdef RT_OS_WINDOWS # include #else # ifdef RT_OS_DARWIN # define _XOPEN_SOURCE # endif # include # include # define USE_SIGNAL #endif /******************************************************************************* * Structures and Typedefs * *******************************************************************************/ typedef struct TRAPINFO { uintptr_t uTrapPC; uintptr_t uResumePC; uint8_t u8Trap; uint8_t cbInstr; uint8_t auAlignment[sizeof(uintptr_t) * 2 - 2]; } TRAPINFO; typedef TRAPINFO const *PCTRAPINFO; /******************************************************************************* * Global Variables * *******************************************************************************/ RT_C_DECLS_BEGIN uint8_t *g_pbEfPage = NULL; uint8_t *g_pbEfExecPage = NULL; extern TRAPINFO g_aTrapInfo[]; RT_C_DECLS_END /******************************************************************************* * Internal Functions * *******************************************************************************/ DECLASM(int32_t) x861_Test1(void); static PCTRAPINFO findTrapInfo(uintptr_t uTrapPC, uintptr_t uTrapSP) { /* Search by trap program counter. */ for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++) if (g_aTrapInfo[i].uTrapPC == uTrapPC) return &g_aTrapInfo[i]; /* Search by return address. */ uintptr_t uReturn = *(uintptr_t *)uTrapSP; for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++) if (g_aTrapInfo[i].uTrapPC + g_aTrapInfo[i].cbInstr == uReturn) return &g_aTrapInfo[i]; return NULL; } #ifdef USE_SIGNAL static void sigHandler(int iSig, siginfo_t *pSigInfo, void *pvSigCtx) { ucontext_t *pCtx = (ucontext_t *)pvSigCtx; NOREF(pSigInfo); # if defined(RT_ARCH_AMD64) && defined(RT_OS_DARWIN) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rip; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rsp; uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno; uintptr_t uErr = pCtx->uc_mcontext->__es.__err; # elif defined(RT_ARCH_AMD64) && defined(RT_OS_FREEBSD) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_rip; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_rsp; uintptr_t uTrapNo = ~(uintptr_t)0; uintptr_t uErr = ~(uintptr_t)0; # elif defined(RT_ARCH_AMD64) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RIP]; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RSP]; uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO]; uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR]; # elif defined(RT_ARCH_X86) && defined(RT_OS_DARWIN) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__eip; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__esp; uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno; uintptr_t uErr = pCtx->uc_mcontext->__es.__err; # elif defined(RT_ARCH_X86) && defined(RT_OS_FREEBSD) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_eip; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_esp; uintptr_t uTrapNo = ~(uintptr_t)0; uintptr_t uErr = ~(uintptr_t)0; # elif defined(RT_ARCH_X86) uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_EIP]; uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_ESP]; uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO]; uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR]; # else uintptr_t *puPC = NULL; uintptr_t *puSP = NULL; uintptr_t uTrapNo = ~(uintptr_t)0; uintptr_t uErr = ~(uintptr_t)0; # endif RTAssertMsg2("tstX86-1: Trap #%#04x err=%#06x at %p\n", uTrapNo, uErr, *puPC); PCTRAPINFO pTrapInfo = findTrapInfo(*puPC, *puSP); if (pTrapInfo) { if (pTrapInfo->u8Trap != uTrapNo && uTrapNo != ~(uintptr_t)0) RTAssertMsg2("tstX86-1: Expected #%#04x, got #%#04x\n", pTrapInfo->u8Trap, uTrapNo); else { if (*puPC != pTrapInfo->uTrapPC) *puSP += sizeof(uintptr_t); *puPC = pTrapInfo->uResumePC; return; } } else RTAssertMsg2("tstX86-1: Unexpected trap!\n"); /* die */ signal(iSig, SIG_IGN); } #else #endif int main() { /* * Set up the test environment. */ RTTEST hTest; RTEXITCODE rcExit = RTTestInitAndCreate("tstX86-1", &hTest); if (rcExit != RTEXITCODE_SUCCESS) return rcExit; RTTestBanner(hTest); g_pbEfPage = (uint8_t *)RTTestGuardedAllocTail(hTest, PAGE_SIZE); RTTESTI_CHECK(g_pbEfPage != NULL); g_pbEfExecPage = (uint8_t *)RTMemExecAlloc(PAGE_SIZE*2); RTTESTI_CHECK(g_pbEfExecPage != NULL); RTTESTI_CHECK(!((uintptr_t)g_pbEfExecPage & PAGE_OFFSET_MASK)); RTTESTI_CHECK_RC(RTMemProtect(g_pbEfExecPage + PAGE_SIZE, PAGE_SIZE, RTMEM_PROT_NONE), VINF_SUCCESS); #ifdef USE_SIGNAL static int const s_aiSigs[] = { SIGBUS, SIGSEGV, SIGFPE, SIGILL }; for (unsigned i = 0; i < RT_ELEMENTS(s_aiSigs); i++) { struct sigaction SigAct; RTTESTI_CHECK_BREAK(sigaction(s_aiSigs[i], NULL, &SigAct) == 0); SigAct.sa_sigaction = sigHandler; SigAct.sa_flags |= SA_SIGINFO; RTTESTI_CHECK(sigaction(s_aiSigs[i], &SigAct, NULL) == 0); } #else /** @todo implement me. */ #endif if (!RTTestErrorCount(hTest)) { /* * Do the testing. */ RTTestSub(hTest, "part 1"); int32_t rc = x861_Test1(); if (rc != 0) RTTestFailed(hTest, "x861_Test1 -> %d", rc); } return RTTestSummaryAndDestroy(hTest); }