source: vbox/trunk/src/VBox/VMM/testcase/tstX86-1.cpp@ 36768

/* $Id: tstX86-1.cpp 36768 2011-04-20 18:33:29Z 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 <iprt/test.h>
#include <iprt/param.h>

#ifdef RT_OS_WINDOWS
# include <Windows.h>
#else
# ifdef RT_OS_DARWIN
#  define _XOPEN_SOURCE
# endif
# include <signal.h>
# include <ucontext.h>
# 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;
extern TRAPINFO g_aTrapInfo[];
RT_C_DECLS_END


/*******************************************************************************
*   Internal Functions                                                         *
*******************************************************************************/
DECLASM(int32_t) x861_Test1(void);



static PCTRAPINFO findTrapInfo(uintptr_t uTrapPC)
{
    for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++)
        if (g_aTrapInfo[i].uTrapPC == uTrapPC)
            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;
# if defined(RT_ARCH_AMD64) && defined(RT_OS_DARWIN)
    uintptr_t  *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rip;
# elif defined(RT_ARCH_AMD64)
    uintptr_t  *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RIP];
# elif defined(RT_ARCH_X86) && defined(RT_OS_DARWIN)
    uintptr_t  *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__eip;
# elif defined(RT_ARCH_X86)
    uintptr_t  *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_EIP];
# else
    uintptr_t  *puPC = NULL;
# endif

    PCTRAPINFO  pTrapInfo = findTrapInfo(*puPC);
    if (pTrapInfo)
    {
        /** @todo verify the kind of trap */
        *puPC = pTrapInfo->uResumePC;
        return;
    }

    /* 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;
    g_pbEfPage = (uint8_t *)RTTestGuardedAllocTail(hTest, PAGE_SIZE);
    RTTESTI_CHECK(g_pbEfPage != NULL);

#ifdef USE_SIGNAL
    static int const s_aiSigs[] = { SIGBUS, SIGSEGV, SIGFPE };
    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);
}