diff options
Diffstat (limited to 'src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp')
| -rw-r--r-- | src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp b/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp new file mode 100644 index 00000000..81ce0bb8 --- /dev/null +++ b/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp @@ -0,0 +1,180 @@ +/* $Id: tstLdrDisasmTest.cpp $ */ +/** @file + * IPRT - RTLdr test object. + * + * We use precompiled versions of this object for testing all the loaders. + * + * This is not supposed to be pretty or usable code, just something which + * make life difficult for the loader. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <VBox/dis.h> +#include <VBox/disopcode.h> +#include <VBox/sup.h> +#include <iprt/string.h> + +#if defined(IN_RING0) +# define MY_PRINTF(a) SUPR0Printf a +#else +# define MY_PRINTF(a) do {} while (0) +#endif + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ + +/* 32-bit code */ +static const uint8_t g_ab32BitCode[] = +{ + 0x55, // 1000ab50 55 push ebp + 0x8b,0xec, // 1000ab51 8bec mov ebp,esp + 0x8b,0x45,0x08, // 1000ab53 8b4508 mov eax,dword ptr [ebp+8] + 0x81,0x38,0x07,0x07,// 1000ab56 813807076419 cmp dword ptr [eax],19640707h + 0x64,0x19, + 0x75,0x09, // 1000ab5c 7509 jne kLdr!kLdrModMap+0x17 (1000ab67) + 0x8b,0x4d,0x08, // 1000ab5e 8b4d08 mov ecx,dword ptr [ebp+8] + 0x83,0x79,0x2c,0x00,// 1000ab61 83792c00 cmp dword ptr [ecx+2Ch],0 + 0x75,0x07, // 1000ab65 7507 jne kLdr!kLdrModMap+0x1e (1000ab6e) + 0xb8,0xc0,0x68,0x06,// 1000ab67 b8c0680600 mov eax,668C0h + 0x00, + 0xeb,0x14, // 1000ab6c eb14 jmp kLdr!kLdrModMap+0x32 (1000ab82) + 0x33,0xd2, // 1000ab6e 33d2 xor edx,edx + 0x75,0xe1, // 1000ab70 75e1 jne kLdr!kLdrModMap+0x3 (1000ab53) + 0x8b,0x45,0x08, // 1000ab72 8b4508 mov eax,dword ptr [ebp+8] + 0x50, // 1000ab75 50 push eax + 0x8b,0x4d,0x08, // 1000ab76 8b4d08 mov ecx,dword ptr [ebp+8] + 0x8b,0x51,0x2c, // 1000ab79 8b512c mov edx,dword ptr [ecx+2Ch] + 0xff,0x52,0x3c, // 1000ab7c ff523c call dword ptr [edx+3Ch] + 0x83,0xc4,0x04, // 1000ab7f 83c404 add esp,4 + 0x5d, // 1000ab82 5d pop ebp + 0xc3, // 1000ab83 c3 ret + 0xcc +}; + + +/** + * @callback_method_impl{FNDISREADBYTES} + */ +static DECLCALLBACK(int) DisasmTest1ReadCode(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead) +{ + size_t cb = cbMaxRead; + if (cb + pDis->uInstrAddr + offInstr > sizeof(g_ab32BitCode)) + cb = cbMinRead; + memcpy(&pDis->abInstr[offInstr], &g_ab32BitCode[pDis->uInstrAddr + offInstr], cb); + pDis->cbCachedInstr = offInstr + (uint8_t)cb; + return VINF_SUCCESS; +} + + +/* + * Use an inline function here just to test '__textcoal_nt' sections on darwin. + */ +inline int MyDisasm(uintptr_t CodeIndex, PDISCPUSTATE pCpu, uint32_t *pcb) +{ + uint32_t cb; + int rc = DISInstrWithReader(CodeIndex, DISCPUMODE_32BIT, DisasmTest1ReadCode, 0, pCpu, &cb); + *pcb = cb; + MY_PRINTF(("DISCoreOneEx -> rc=%d cb=%d Cpu: bOpCode=%#x pCurInstr=%p (42=%d)\n", \ + rc, cb, pCpu->bOpCode, pCpu->pCurInstr, 42)); \ + return rc; +} + + +extern "C" DECLEXPORT(int) DisasmTest1(void) +{ + DISCPUSTATE Cpu; + uintptr_t CodeIndex = 0; + uint32_t cb; + int rc; + MY_PRINTF(("DisasmTest1: %p\n", &DisasmTest1)); + +#if defined(IN_RING0) + MY_PRINTF(("GIP: g_pSUPGlobalInfoPage=%p\n", g_pSUPGlobalInfoPage)); + MY_PRINTF(("GIP: magic=%#x version=%#x mode=%d cCpus=%d\n", g_pSUPGlobalInfoPage->u32Magic, g_pSUPGlobalInfoPage->u32Version, + g_pSUPGlobalInfoPage->u32Mode, g_pSUPGlobalInfoPage->cCpus)); + if (g_pSUPGlobalInfoPage->u32Magic != SUPGLOBALINFOPAGE_MAGIC) + return 0xc001; + if (g_pSUPGlobalInfoPage->u32Version != SUPGLOBALINFOPAGE_VERSION) + return 0xc002; + if (g_pSUPGlobalInfoPage->u32Mode != SUPGIPMODE_INVARIANT_TSC) + return 0xc003; + if (g_pSUPGlobalInfoPage->cCpus != 42) + return 0xc004; +#endif + + memset(&Cpu, 0, sizeof(Cpu)); + +#define DISAS_AND_CHECK(cbInstr, enmOp) \ + do { \ + rc = MyDisasm(CodeIndex, &Cpu, &cb); \ + if (RT_FAILURE(rc)) \ + return CodeIndex | 0xf000; \ + if (Cpu.pCurInstr->uOpcode != (enmOp)) \ + return CodeIndex| 0xe000; \ + if (cb != (cbInstr)) \ + return CodeIndex | 0xd000; \ + CodeIndex += cb; \ + } while (0) + + DISAS_AND_CHECK(1, OP_PUSH); + DISAS_AND_CHECK(2, OP_MOV); + DISAS_AND_CHECK(3, OP_MOV); + DISAS_AND_CHECK(6, OP_CMP); + DISAS_AND_CHECK(2, OP_JNE); + DISAS_AND_CHECK(3, OP_MOV); + DISAS_AND_CHECK(4, OP_CMP); + DISAS_AND_CHECK(2, OP_JNE); + DISAS_AND_CHECK(5, OP_MOV); + DISAS_AND_CHECK(2, OP_JMP); + DISAS_AND_CHECK(2, OP_XOR); + DISAS_AND_CHECK(2, OP_JNE); + DISAS_AND_CHECK(3, OP_MOV); + DISAS_AND_CHECK(1, OP_PUSH); + DISAS_AND_CHECK(3, OP_MOV); + DISAS_AND_CHECK(3, OP_MOV); + DISAS_AND_CHECK(3, OP_CALL); + DISAS_AND_CHECK(3, OP_ADD); + DISAS_AND_CHECK(1, OP_POP); + DISAS_AND_CHECK(1, OP_RETN); + DISAS_AND_CHECK(1, OP_INT3); + + return rc; +} + |