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Diffstat (limited to 'src/VBox/ValidationKit/utils/cpu/exceptionsR3.cpp')
| -rw-r--r-- | src/VBox/ValidationKit/utils/cpu/exceptionsR3.cpp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/utils/cpu/exceptionsR3.cpp b/src/VBox/ValidationKit/utils/cpu/exceptionsR3.cpp new file mode 100644 index 00000000..4cd4f36c --- /dev/null +++ b/src/VBox/ValidationKit/utils/cpu/exceptionsR3.cpp @@ -0,0 +1,262 @@ +/* $Id: exceptionsR3.cpp $ */ +/** @file + * exceptionsR3 - Tests various ring-3 CPU exceptions. + */ + +/* + * Copyright (C) 2009-2019 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. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/cdefs.h> +#include <iprt/ctype.h> +#include <iprt/getopt.h> +#include <iprt/stream.h> +#include <iprt/string.h> +#include <iprt/test.h> +#include <iprt/x86.h> + +#include <setjmp.h> + +#ifndef RT_OS_WINDOWS +# define USE_SIGNALS +# include <signal.h> +# include <stdlib.h> +#endif + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** Executes a simple test. */ +#define TST_XCPT(Trapper, iTrap, uErr) \ + do \ + { \ + RTTestISub(#Trapper); \ + tstXcptReset(); \ + if (!setjmp(g_JmpBuf)) \ + { \ + tstXcptAsm##Trapper(); \ + RTTestIFailed("%s didn't trap (line no %u)", #Trapper, __LINE__); \ + } \ + else if ( (iTrap) != tstXcptCurTrap() \ + || (uErr) != tstXcptCurErr() ) \ + RTTestIFailed("%s trapped with %#x/%#x, expected %#x/%#x (line no %u)", \ + #Trapper, tstXcptCurTrap(), tstXcptCurErr(), (iTrap), (uErr), __LINE__); \ + else \ + RTTestISubDone(); \ + } while (0) + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** Where to longjmp to when getting a signal/exception. */ +jmp_buf g_JmpBuf; +#ifdef USE_SIGNALS +/** Pending signal. + * -1 if no signal is pending. */ +int32_t volatile g_iSignal; +/** Pending signal info. */ +siginfo_t volatile g_SigInfo; +#endif + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +DECLASM(void) tstXcptAsmNullPtrRead(void); +DECLASM(void) tstXcptAsmNullPtrWrite(void); +DECLASM(void) tstXcptAsmSysEnter(void); +DECLASM(void) tstXcptAsmSysCall(void); + + + +#ifdef USE_SIGNALS +/** + * Generic signal handler. + */ +static void tstXcptSigHandler(int iSignal, siginfo_t *pSigInfo, void *pvCtx) +{ +#if 1 + RTStrmPrintf(g_pStdErr, "signal %d pSigInfo=%p pvCtx=%p", iSignal, pSigInfo, pvCtx); + if (pSigInfo) + RTStrmPrintf(g_pStdErr, " si_addr=%p si_code=%#x sival_ptr=%p sival_int=%d", + pSigInfo->si_addr, pSigInfo->si_code, pSigInfo->si_value.sival_ptr, pSigInfo->si_value.sival_int); + RTStrmPrintf(g_pStdErr, "\n"); +#endif + if (g_iSignal == -1) + { + g_iSignal = iSignal; + if (pSigInfo) + memcpy((void *)&g_SigInfo, pSigInfo, sizeof(g_SigInfo)); + longjmp(g_JmpBuf, 1); + } + else + { + /* we're up the infamous creek... */ + _Exit(2); + } +} + +#elif defined(RT_OS_WINDOWS) +/** @todo */ +//# error "PORTME" + +#else +# error "PORTME" +#endif + + +/** Reset the current exception state and get ready for a new trap. */ +static void tstXcptReset(void) +{ +#ifdef USE_SIGNALS + g_iSignal = -1; + memset((void *)&g_SigInfo, 0, sizeof(g_SigInfo)); +#endif +} + + + +/** Get the current intel trap number. Returns -1 if none. */ +static int tstXcptCurTrap(void) +{ +#ifdef USE_SIGNALS + /** @todo this is just a quick sketch. */ + switch (g_iSignal) + { + case SIGBUS: +# ifdef RT_OS_DARWIN + if (g_SigInfo.si_code == 2 /*KERN_PROTECTION_FAILURE*/) + return X86_XCPT_PF; +# endif + return X86_XCPT_GP; + + case SIGSEGV: + return X86_XCPT_GP; + } +#endif + return -1; +} + + +/** Get the exception error code if applicable. */ +static uint32_t tstXcptCurErr(void) +{ +#ifdef USE_SIGNALS + /** @todo this is just a quick sketch. */ + switch (g_iSignal) + { + case SIGBUS: +# ifdef RT_OS_DARWIN + if (g_SigInfo.si_code == 2 /*KERN_PROTECTION_FAILURE*/) + return 0; +# endif + break; + + case SIGSEGV: + break; + } +#endif + return UINT32_MAX; +} + + +int main(int argc, char **argv) +{ + /* + * Prolog. + */ + RTTEST hTest; + int rc = RTTestInitAndCreate("exceptionsR3", &hTest); + if (rc) + return rc; + + /* + * Parse options. + */ + bool volatile fRawMode = false; + static const RTGETOPTDEF s_aOptions[] = + { + { "--raw-mode", 'r', RTGETOPT_REQ_NOTHING }, + }; + + RTGETOPTUNION ValUnion; + RTGETOPTSTATE GetState; + RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1, 0); + while ((rc = RTGetOpt(&GetState, &ValUnion))) + { + switch (rc) + { + case 'r': + fRawMode = true; + break; + + default: + return RTGetOptPrintError(rc, &ValUnion); + } + } + + /* + * Test setup. + */ +#ifdef USE_SIGNALS + struct sigaction Act; + RT_ZERO(Act); + Act.sa_sigaction = tstXcptSigHandler; + Act.sa_flags = SA_SIGINFO; + sigfillset(&Act.sa_mask); + + sigaction(SIGILL, &Act, NULL); + sigaction(SIGTRAP, &Act, NULL); +# ifdef SIGEMT + sigaction(SIGEMT, &Act, NULL); +# endif + sigaction(SIGFPE, &Act, NULL); + sigaction(SIGBUS, &Act, NULL); + sigaction(SIGSEGV, &Act, NULL); + +#else + /** @todo Implement this using structured exception handling on Windows and + * OS/2. */ +#endif + + /* + * The tests. + */ + RTTestBanner(hTest); + TST_XCPT(NullPtrRead, X86_XCPT_PF, 0); + TST_XCPT(NullPtrWrite, X86_XCPT_PF, 0); + if (fRawMode) + { + TST_XCPT(SysEnter, X86_XCPT_GP, 0); + TST_XCPT(SysCall, X86_XCPT_UD, 0); + } + + /* + * Epilog. + */ + return RTTestSummaryAndDestroy(hTest); +} + |