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/* $Id: tstDisasm-1.cpp $ */
/** @file
* VBox disassembler - Test application
*/
/*
* Copyright (C) 2006-2019 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <VBox/dis.h>
#include <iprt/test.h>
#include <iprt/ctype.h>
#include <iprt/string.h>
#include <iprt/errcore.h>
#include <iprt/time.h>
DECLASM(int) TestProc32(void);
DECLASM(int) TestProc32_EndProc(void);
#ifndef RT_OS_OS2
DECLASM(int) TestProc64(void);
DECLASM(int) TestProc64_EndProc(void);
#endif
//uint8_t aCode16[] = { 0x66, 0x67, 0x89, 0x07 };
static void testDisas(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
{
RTTestISub(pszSub);
size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
for (size_t off = 0; off < cbInstrs;)
{
uint32_t const cErrBefore = RTTestIErrorCount();
uint32_t cb = 1;
DISSTATE Dis;
char szOutput[256] = {0};
int rc = DISInstrToStr(&pabInstrs[off], enmDisCpuMode, &Dis, &cb, szOutput, sizeof(szOutput));
RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
RTTESTI_CHECK(cb == Dis.cbInstr);
RTTESTI_CHECK(cb > 0);
RTTESTI_CHECK(cb <= 16);
RTStrStripR(szOutput);
RTTESTI_CHECK(szOutput[0]);
if (szOutput[0])
{
char *pszBytes = strchr(szOutput, '[');
RTTESTI_CHECK(pszBytes);
if (pszBytes)
{
RTTESTI_CHECK(pszBytes[-1] == ' ');
RTTESTI_CHECK(RT_C_IS_XDIGIT(pszBytes[1]));
RTTESTI_CHECK(pszBytes[cb * 3] == ']');
RTTESTI_CHECK(pszBytes[cb * 3 + 1] == ' ');
size_t cch = strlen(szOutput);
RTTESTI_CHECK(szOutput[cch - 1] != ',');
}
}
if (cErrBefore != RTTestIErrorCount())
RTTestIFailureDetails("rc=%Rrc, off=%#x (%u) cbInstr=%u enmDisCpuMode=%d\n",
rc, off, off, Dis.cbInstr, enmDisCpuMode);
RTTestIPrintf(RTTESTLVL_ALWAYS, "%s\n", szOutput);
/* Check with size-only. */
uint32_t cbOnly = 1;
DISSTATE DisOnly;
rc = DISInstrWithPrefetchedBytes((uintptr_t)&pabInstrs[off], enmDisCpuMode, 0 /*fFilter - none */,
Dis.abInstr, Dis.cbCachedInstr, NULL, NULL, &DisOnly, &cbOnly);
RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
RTTESTI_CHECK(cbOnly == DisOnly.cbInstr);
RTTESTI_CHECK_MSG(cbOnly == cb, ("%#x vs %#x\n", cbOnly, cb));
off += cb;
}
}
static DECLCALLBACK(int) testReadBytes(PDISSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
{
RT_NOREF1(cbMinRead);
memcpy(&pDis->abInstr[offInstr], (void *)((uintptr_t)pDis->uInstrAddr + offInstr), cbMaxRead);
pDis->cbCachedInstr = offInstr + cbMaxRead;
return VINF_SUCCESS;
}
static void testPerformance(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
{
RTTestISubF("Performance - %s", pszSub);
size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
uint64_t cInstrs = 0;
uint64_t nsStart = RTTimeNanoTS();
for (uint32_t i = 0; i < _512K; i++) /* the samples are way to small. :-) */
{
for (size_t off = 0; off < cbInstrs; cInstrs++)
{
uint32_t cb = 1;
DISSTATE Dis;
DISInstrWithReader((uintptr_t)&pabInstrs[off], enmDisCpuMode, testReadBytes, NULL, &Dis, &cb);
off += cb;
}
}
uint64_t cNsElapsed = RTTimeNanoTS() - nsStart;
RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "%s-Total", pszSub);
RTTestIValueF(cNsElapsed / cInstrs, RTTESTUNIT_NS_PER_CALL, "%s-per-instruction", pszSub);
}
void testTwo(void)
{
static const struct
{
DISCPUMODE enmMode;
uint8_t abInstr[24];
uint8_t cbParam1;
uint8_t cbParam2;
uint8_t cbParam3;
} s_gInstrs[] =
{
{ DISCPUMODE_64BIT, { 0x48, 0xc7, 0x03, 0x00, 0x00, 0x00, 0x00, }, 8, 8, 0, },
};
for (unsigned i = 0; i < RT_ELEMENTS(s_gInstrs); i++)
{
uint32_t cb = 1;
DISSTATE Dis;
int rc;
RTTESTI_CHECK_RC(rc = DISInstr(s_gInstrs[i].abInstr, s_gInstrs[i].enmMode, &Dis, &cb), VINF_SUCCESS);
if (rc == VINF_SUCCESS)
{
uint32_t cb2;
RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param1)) == s_gInstrs[i].cbParam1,
("%u: %#x vs %#x\n", i , cb2, s_gInstrs[i].cbParam1));
RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param2)) == s_gInstrs[i].cbParam2,
("%u: %#x vs %#x (%s)\n", i , cb2, s_gInstrs[i].cbParam2, Dis.pCurInstr->pszOpcode));
RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param3)) == s_gInstrs[i].cbParam3,
("%u: %#x vs %#x\n", i , cb2, s_gInstrs[i].cbParam3));
}
}
}
int main(int argc, char **argv)
{
RT_NOREF2(argc, argv);
RTTEST hTest;
RTEXITCODE rcExit = RTTestInitAndCreate("tstDisasm", &hTest);
if (rcExit)
return rcExit;
RTTestBanner(hTest);
static const struct
{
const char *pszDesc;
uint8_t const *pbStart;
uintptr_t uEndPtr;
DISCPUMODE enmCpuMode;
} aSnippets[] =
{
{ "32-bit", (uint8_t const *)(uintptr_t)TestProc32, (uintptr_t)&TestProc32_EndProc, DISCPUMODE_32BIT },
{ "64-bit", (uint8_t const *)(uintptr_t)TestProc64, (uintptr_t)&TestProc64_EndProc, DISCPUMODE_64BIT },
};
for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
testDisas(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
testTwo();
if (RTTestIErrorCount() == 0)
{
for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
testPerformance(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
}
return RTTestSummaryAndDestroy(hTest);
}
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