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-rw-r--r--src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp170
1 files changed, 170 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp b/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp
new file mode 100644
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+++ b/src/VBox/Runtime/testcase/tstLdrDisasmTest.cpp
@@ -0,0 +1,170 @@
+/* $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) 2006-2019 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.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+
+/*********************************************************************************************************************************
+* 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;
+}
+
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