| 1 | /* $Id: tstDisasm-1.cpp 41790 2012-06-16 20:33:45Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox disassembler - Test application
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2012 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.215389.xyz. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | /*******************************************************************************
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| 19 | * Header Files *
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| 20 | *******************************************************************************/
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| 21 | #include <VBox/dis.h>
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| 22 | #include <iprt/test.h>
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| 23 | #include <iprt/ctype.h>
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| 24 | #include <iprt/string.h>
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| 25 | #include <iprt/err.h>
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| 26 | #include <iprt/time.h>
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| 27 |
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| 28 |
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| 29 | DECLASM(int) TestProc32(void);
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| 30 | DECLASM(int) TestProc32_EndProc(void);
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| 31 | #ifndef RT_OS_OS2
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| 32 | DECLASM(int) TestProc64(void);
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| 33 | DECLASM(int) TestProc64_EndProc(void);
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| 34 | #endif
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| 35 | //uint8_t aCode16[] = { 0x66, 0x67, 0x89, 0x07 };
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| 36 |
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| 37 | static void testDisas(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
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| 38 | {
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| 39 | RTTestISub(pszSub);
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| 40 | size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
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| 41 | for (size_t off = 0; off < cbInstrs;)
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| 42 | {
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| 43 | uint32_t const cErrBefore = RTTestIErrorCount();
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| 44 | uint32_t cb = 1;
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| 45 | DISSTATE Dis;
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| 46 | char szOutput[256] = {0};
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| 47 | int rc = DISInstrToStr(&pabInstrs[off], enmDisCpuMode, &Dis, &cb, szOutput, sizeof(szOutput));
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| 48 |
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| 49 | RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
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| 50 | RTTESTI_CHECK(cb == Dis.cbInstr);
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| 51 | RTTESTI_CHECK(cb > 0);
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| 52 | RTTESTI_CHECK(cb <= 16);
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| 53 | RTStrStripR(szOutput);
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| 54 | RTTESTI_CHECK(szOutput[0]);
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| 55 | if (szOutput[0])
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| 56 | {
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| 57 | char *pszBytes = strchr(szOutput, '[');
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| 58 | RTTESTI_CHECK(pszBytes);
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| 59 | if (pszBytes)
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| 60 | {
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| 61 | RTTESTI_CHECK(pszBytes[-1] == ' ');
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| 62 | RTTESTI_CHECK(RT_C_IS_XDIGIT(pszBytes[1]));
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| 63 | RTTESTI_CHECK(pszBytes[cb * 3] == ']');
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| 64 | RTTESTI_CHECK(pszBytes[cb * 3 + 1] == ' ');
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| 65 |
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| 66 | size_t cch = strlen(szOutput);
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| 67 | RTTESTI_CHECK(szOutput[cch - 1] != ',');
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| 68 | }
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| 69 | }
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| 70 | if (cErrBefore != RTTestIErrorCount())
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| 71 | RTTestIFailureDetails("rc=%Rrc, off=%#x (%u) cbInstr=%u enmDisCpuMode=%d\n",
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| 72 | rc, off, Dis.cbInstr, enmDisCpuMode);
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| 73 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s\n", szOutput);
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| 74 | off += cb;
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| 75 | }
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| 76 | }
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| 77 |
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| 78 | static void testPerformance(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
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| 79 | {
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| 80 | RTTestISubF("Performance - %s", pszSub);
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| 81 |
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| 82 | size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
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| 83 | uint64_t cInstrs = 0;
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| 84 | uint64_t nsStart = RTTimeNanoTS();
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| 85 | for (uint32_t i = 0; i < _512K; i++) /* the samples are way to small. :-) */
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| 86 | {
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| 87 | for (size_t off = 0; off < cbInstrs; cInstrs++)
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| 88 | {
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| 89 | uint32_t cb = 1;
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| 90 | DISSTATE Dis;
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| 91 | DISInstr(&pabInstrs[off], enmDisCpuMode, &Dis, &cb);
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| 92 | off += cb;
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| 93 | }
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| 94 | }
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| 95 | uint64_t cNsElapsed = RTTimeNanoTS() - nsStart;
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| 96 |
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| 97 | RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "%s-Total", pszSub);
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| 98 | RTTestIValueF(cNsElapsed / cInstrs, RTTESTUNIT_NS_PER_CALL, "%s-per-instruction", pszSub);
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| 99 | }
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| 100 |
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| 101 |
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| 102 | int main(int argc, char **argv)
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| 103 | {
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| 104 | RTTEST hTest;
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| 105 | RTEXITCODE rcExit = RTTestInitAndCreate("tstDisasm", &hTest);
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| 106 | if (rcExit)
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| 107 | return rcExit;
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| 108 | RTTestBanner(hTest);
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| 109 |
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| 110 | static const struct
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| 111 | {
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| 112 | const char *pszDesc;
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| 113 | uint8_t const *pbStart;
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| 114 | uintptr_t uEndPtr;
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| 115 | DISCPUMODE enmCpuMode;
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| 116 | } aSnippets[] =
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| 117 | {
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| 118 | { "32-bit", (uint8_t const *)(uintptr_t)TestProc32, (uintptr_t)&TestProc32_EndProc, DISCPUMODE_32BIT },
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| 119 | { "64-bit", (uint8_t const *)(uintptr_t)TestProc64, (uintptr_t)&TestProc64_EndProc, DISCPUMODE_64BIT },
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| 120 | };
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| 121 |
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| 122 | for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
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| 123 | testDisas(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
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| 124 |
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| 125 | if (RTTestIErrorCount() == 0)
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| 126 | {
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| 127 | for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
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| 128 | testPerformance(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
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| 129 | }
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| 130 |
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| 131 | return RTTestSummaryAndDestroy(hTest);
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| 132 | }
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| 133 |
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