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/* $Id: tstX86-1.cpp $ */
/** @file
* X86 instruction set exploration/testcase #1.
*/
/*
* Copyright (C) 2011-2020 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>
#include <iprt/mem.h>
#include <iprt/errcore.h>
#include <iprt/assert.h>
#include <iprt/x86.h>
#ifdef RT_OS_WINDOWS
# include <iprt/win/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;
uint8_t *g_pbEfExecPage = NULL;
extern TRAPINFO g_aTrapInfo[];
RT_C_DECLS_END
/*********************************************************************************************************************************
* Internal Functions *
*********************************************************************************************************************************/
DECLASM(int32_t) x861_Test1(void);
DECLASM(int32_t) x861_Test2(void);
DECLASM(int32_t) x861_Test3(void);
DECLASM(int32_t) x861_Test4(void);
DECLASM(int32_t) x861_Test5(void);
DECLASM(int32_t) x861_Test6(void);
DECLASM(int32_t) x861_Test7(void);
DECLASM(int32_t) x861_TestFPUInstr1(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;
uintptr_t uCr2 = pCtx->uc_mcontext->__es.__faultvaddr;
# 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;
uintptr_t uCr2 = ~(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];
uintptr_t uCr2 = pCtx->uc_mcontext.gregs[REG_CR2];
# 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;
uintptr_t uCr2 = pCtx->uc_mcontext->__es.__faultvaddr;
# 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;
uintptr_t uCr2 = ~(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];
# ifdef REG_CR2 /** @todo ... */
uintptr_t uCr2 = pCtx->uc_mcontext.gregs[REG_CR2];
# else
uintptr_t uCr2 = ~(uintptr_t)0;
# endif
# else
uintptr_t *puPC = NULL;
uintptr_t *puSP = NULL;
uintptr_t uTrapNo = ~(uintptr_t)0;
uintptr_t uErr = ~(uintptr_t)0;
uintptr_t uCr2 = ~(uintptr_t)0;
# endif
if (uTrapNo == X86_XCPT_PF)
RTAssertMsg2("tstX86-1: Trap #%#04x err=%#06x at %p / %p\n", uTrapNo, uErr, *puPC, uCr2);
else
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.
*/
int32_t rc;
#if 0
RTTestSub(hTest, "Misc 1");
rc = x861_Test1();
if (rc != 0)
RTTestFailed(hTest, "x861_Test1 -> %d", rc);
RTTestSub(hTest, "Prefixes and groups");
rc = x861_Test2();
if (rc != 0)
RTTestFailed(hTest, "x861_Test2 -> %d", rc);
RTTestSub(hTest, "fxsave / fxrstor and #PFs");
rc = x861_Test3();
if (rc != 0)
RTTestFailed(hTest, "x861_Test3 -> %d", rc);
RTTestSub(hTest, "Multibyte NOPs");
rc = x861_Test4();
if (rc != 0)
RTTestFailed(hTest, "x861_Test4 -> %d", rc);
//#endif
RTTestSub(hTest, "Odd encodings and odd ends");
rc = x861_Test5();
if (rc != 0)
RTTestFailed(hTest, "x861_Test5 -> %d", rc);
//#if 0
RTTestSub(hTest, "Odd floating point encodings");
rc = x861_Test6();
if (rc != 0)
RTTestFailed(hTest, "x861_Test5 -> %d", rc);
RTTestSub(hTest, "Floating point exceptions ++");
rc = x861_Test7();
if (rc != 0)
RTTestFailed(hTest, "x861_Test6 -> %d", rc);
#endif
rc = x861_TestFPUInstr1();
if (rc != 0)
RTTestFailed(hTest, "x861_TestFPUInstr1 -> %d", rc);
}
return RTTestSummaryAndDestroy(hTest);
}
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