| 1 | /* $Id: tstDisasm-1.cpp 101539 2023-10-22 02:43:09Z 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) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 |
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| 29 | /*********************************************************************************************************************************
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| 30 | * Header Files *
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| 31 | *********************************************************************************************************************************/
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| 32 | #include <VBox/dis.h>
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| 33 | #include <iprt/test.h>
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| 34 | #include <iprt/ctype.h>
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| 35 | #include <iprt/string.h>
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| 36 | #include <iprt/errcore.h>
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| 37 | #include <iprt/time.h>
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| 38 |
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| 39 |
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| 40 | DECLASM(int) TestProc32(void);
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| 41 | DECLASM(int) TestProc32_EndProc(void);
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| 42 | #ifndef RT_OS_OS2
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| 43 | DECLASM(int) TestProc64(void);
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| 44 | DECLASM(int) TestProc64_EndProc(void);
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| 45 | #endif
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| 46 | //uint8_t aCode16[] = { 0x66, 0x67, 0x89, 0x07 };
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| 47 |
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| 48 | static void testDisas(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
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| 49 | {
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| 50 | RTTestISub(pszSub);
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| 51 | size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
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| 52 | for (size_t off = 0; off < cbInstrs;)
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| 53 | {
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| 54 | DISSTATE Dis;
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| 55 | uint32_t cb = 1;
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| 56 | #ifndef DIS_CORE_ONLY
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| 57 | uint32_t const cErrBefore = RTTestIErrorCount();
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| 58 | char szOutput[256] = {0};
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| 59 | int rc = DISInstrToStr(&pabInstrs[off], enmDisCpuMode, &Dis, &cb, szOutput, sizeof(szOutput));
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| 60 |
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| 61 | RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
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| 62 | RTTESTI_CHECK(cb == Dis.cbInstr);
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| 63 | RTTESTI_CHECK(cb > 0);
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| 64 | RTTESTI_CHECK(cb <= 16);
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| 65 | RTStrStripR(szOutput);
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| 66 | RTTESTI_CHECK(szOutput[0]);
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| 67 | if (szOutput[0])
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| 68 | {
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| 69 | char *pszBytes = strchr(szOutput, '[');
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| 70 | RTTESTI_CHECK(pszBytes);
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| 71 | if (pszBytes)
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| 72 | {
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| 73 | RTTESTI_CHECK(pszBytes[-1] == ' ');
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| 74 | RTTESTI_CHECK(RT_C_IS_XDIGIT(pszBytes[1]));
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| 75 | RTTESTI_CHECK(pszBytes[cb * 3] == ']');
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| 76 | RTTESTI_CHECK(pszBytes[cb * 3 + 1] == ' ');
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| 77 |
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| 78 | size_t cch = strlen(szOutput);
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| 79 | RTTESTI_CHECK(szOutput[cch - 1] != ',');
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| 80 | }
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| 81 | }
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| 82 | if (cErrBefore != RTTestIErrorCount())
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| 83 | RTTestIFailureDetails("rc=%Rrc, off=%#x (%u) cbInstr=%u enmDisCpuMode=%d\n",
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| 84 | rc, off, off, Dis.cbInstr, enmDisCpuMode);
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| 85 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s\n", szOutput);
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| 86 |
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| 87 | /* Check with size-only. */
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| 88 | uint32_t cbOnly = 1;
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| 89 | DISSTATE DisOnly;
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| 90 | rc = DISInstrWithPrefetchedBytes((uintptr_t)&pabInstrs[off], enmDisCpuMode, 0 /*fFilter - none */,
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| 91 | Dis.Instr.ab, Dis.cbCachedInstr, NULL, NULL, &DisOnly, &cbOnly);
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| 92 |
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| 93 | RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
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| 94 | RTTESTI_CHECK(cbOnly == DisOnly.cbInstr);
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| 95 | RTTESTI_CHECK_MSG(cbOnly == cb, ("%#x vs %#x\n", cbOnly, cb));
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| 96 |
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| 97 | #else /* DIS_CORE_ONLY */
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| 98 | int rc = DISInstr(&pabInstrs[off], enmDisCpuMode, &Dis, &cb);
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| 99 | RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
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| 100 | RTTESTI_CHECK(cb == Dis.cbInstr);
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| 101 | #endif /* DIS_CORE_ONLY */
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| 102 |
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| 103 | off += cb;
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| 104 | }
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| 105 | }
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| 106 |
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| 107 |
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| 108 | static DECLCALLBACK(int) testReadBytes(PDISSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
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| 109 | {
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| 110 | RT_NOREF1(cbMinRead);
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| 111 | memcpy(&pDis->Instr.ab[offInstr], (void *)((uintptr_t)pDis->uInstrAddr + offInstr), cbMaxRead);
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| 112 | pDis->cbCachedInstr = offInstr + cbMaxRead;
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| 113 | return VINF_SUCCESS;
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| 114 | }
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| 115 |
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| 116 |
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| 117 | static void testPerformance(const char *pszSub, uint8_t const *pabInstrs, uintptr_t uEndPtr, DISCPUMODE enmDisCpuMode)
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| 118 | {
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| 119 | RTTestISubF("Performance - %s", pszSub);
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| 120 |
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| 121 | size_t const cbInstrs = uEndPtr - (uintptr_t)pabInstrs;
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| 122 | uint64_t cInstrs = 0;
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| 123 | uint64_t nsStart = RTTimeNanoTS();
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| 124 | for (uint32_t i = 0; i < _512K; i++) /* the samples are way to small. :-) */
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| 125 | {
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| 126 | for (size_t off = 0; off < cbInstrs; cInstrs++)
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| 127 | {
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| 128 | uint32_t cb = 1;
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| 129 | DISSTATE Dis;
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| 130 | DISInstrWithReader((uintptr_t)&pabInstrs[off], enmDisCpuMode, testReadBytes, NULL, &Dis, &cb);
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| 131 | off += cb;
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| 132 | }
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| 133 | }
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| 134 | uint64_t cNsElapsed = RTTimeNanoTS() - nsStart;
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| 135 |
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| 136 | RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "%s-Total", pszSub);
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| 137 | RTTestIValueF(cNsElapsed / cInstrs, RTTESTUNIT_NS_PER_CALL, "%s-per-instruction", pszSub);
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| 138 | }
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| 139 |
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| 140 | static void testTwo(void)
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| 141 | {
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| 142 | static const struct
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| 143 | {
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| 144 | DISCPUMODE enmMode;
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| 145 | uint8_t abInstr[24];
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| 146 | uint8_t cbParam1;
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| 147 | uint8_t cbParam2;
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| 148 | uint8_t cbParam3;
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| 149 | } s_gInstrs[] =
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| 150 | {
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| 151 | { DISCPUMODE_64BIT, { 0x48, 0xc7, 0x03, 0x00, 0x00, 0x00, 0x00, }, 8, 8, 0, },
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| 152 | };
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| 153 | for (unsigned i = 0; i < RT_ELEMENTS(s_gInstrs); i++)
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| 154 | {
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| 155 | uint32_t cb = 1;
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| 156 | DISSTATE Dis;
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| 157 | int rc;
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| 158 | RTTESTI_CHECK_RC(rc = DISInstr(s_gInstrs[i].abInstr, s_gInstrs[i].enmMode, &Dis, &cb), VINF_SUCCESS);
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| 159 | if (rc == VINF_SUCCESS)
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| 160 | {
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| 161 | uint32_t cb2;
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| 162 | RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param1)) == s_gInstrs[i].cbParam1,
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| 163 | ("%u: %#x vs %#x\n", i , cb2, s_gInstrs[i].cbParam1));
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| 164 | #ifndef DIS_CORE_ONLY
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| 165 | RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param2)) == s_gInstrs[i].cbParam2,
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| 166 | ("%u: %#x vs %#x (%s)\n", i , cb2, s_gInstrs[i].cbParam2, Dis.pCurInstr->pszOpcode));
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| 167 | #else
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| 168 | RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param2)) == s_gInstrs[i].cbParam2,
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| 169 | ("%u: %#x vs %#x\n", i , cb2, s_gInstrs[i].cbParam2));
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| 170 | #endif
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| 171 | RTTESTI_CHECK_MSG((cb2 = DISGetParamSize(&Dis, &Dis.Param3)) == s_gInstrs[i].cbParam3,
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| 172 | ("%u: %#x vs %#x\n", i , cb2, s_gInstrs[i].cbParam3));
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| 173 | }
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| 174 | }
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| 175 | }
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| 176 |
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| 177 |
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| 178 | int main(int argc, char **argv)
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| 179 | {
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| 180 | RT_NOREF2(argc, argv);
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| 181 | RTTEST hTest;
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| 182 | RTEXITCODE rcExit = RTTestInitAndCreate("tstDisasm", &hTest);
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| 183 | if (rcExit)
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| 184 | return rcExit;
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| 185 | RTTestBanner(hTest);
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| 186 |
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| 187 | static const struct
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| 188 | {
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| 189 | const char *pszDesc;
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| 190 | uint8_t const *pbStart;
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| 191 | uintptr_t uEndPtr;
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| 192 | DISCPUMODE enmCpuMode;
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| 193 | } aSnippets[] =
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| 194 | {
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| 195 | { "32-bit", (uint8_t const *)(uintptr_t)TestProc32, (uintptr_t)&TestProc32_EndProc, DISCPUMODE_32BIT },
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| 196 | #ifndef RT_OS_OS2
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| 197 | { "64-bit", (uint8_t const *)(uintptr_t)TestProc64, (uintptr_t)&TestProc64_EndProc, DISCPUMODE_64BIT },
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| 198 | #endif
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| 199 | };
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| 200 |
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| 201 | for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
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| 202 | testDisas(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
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| 203 |
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| 204 | testTwo();
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| 205 |
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| 206 | if (RTTestIErrorCount() == 0)
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| 207 | {
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| 208 | for (unsigned i = 0; i < RT_ELEMENTS(aSnippets); i++)
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| 209 | testPerformance(aSnippets[i].pszDesc, aSnippets[i].pbStart, aSnippets[i].uEndPtr, aSnippets[i].enmCpuMode);
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| 210 | }
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| 211 |
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| 212 | return RTTestSummaryAndDestroy(hTest);
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| 213 | }
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| 214 |
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