VirtualBox

source: vbox/trunk/src/VBox/VMM/testcase/tstX86-1.cpp@ 39333

Last change on this file since 39333 was 39084, checked in by vboxsync, 13 years ago

VMM: -Wunused-parameter on mac.
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1/* $Id: tstX86-1.cpp 39084 2011-10-22 00:37:15Z vboxsync $ */
2/** @file
3 * X86 instruction set exploration/testcase #1.
4 */
5
6/*
7 * Copyright (C) 2011 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*******************************************************************************
20* Header Files *
21*******************************************************************************/
22#include <iprt/test.h>
23#include <iprt/param.h>
24#include <iprt/mem.h>
25#include <iprt/err.h>
26#include <iprt/assert.h>
27
28#ifdef RT_OS_WINDOWS
29# include <Windows.h>
30#else
31# ifdef RT_OS_DARWIN
32# define _XOPEN_SOURCE
33# endif
34# include <signal.h>
35# include <ucontext.h>
36# define USE_SIGNAL
37#endif
38
39
40/*******************************************************************************
41* Structures and Typedefs *
42*******************************************************************************/
43typedef struct TRAPINFO
44{
45 uintptr_t uTrapPC;
46 uintptr_t uResumePC;
47 uint8_t u8Trap;
48 uint8_t cbInstr;
49 uint8_t auAlignment[sizeof(uintptr_t) * 2 - 2];
50} TRAPINFO;
51typedef TRAPINFO const *PCTRAPINFO;
52
53
54/*******************************************************************************
55* Global Variables *
56*******************************************************************************/
57RT_C_DECLS_BEGIN
58uint8_t *g_pbEfPage = NULL;
59uint8_t *g_pbEfExecPage = NULL;
60extern TRAPINFO g_aTrapInfo[];
61RT_C_DECLS_END
62
63
64/*******************************************************************************
65* Internal Functions *
66*******************************************************************************/
67DECLASM(int32_t) x861_Test1(void);
68
69
70
71static PCTRAPINFO findTrapInfo(uintptr_t uTrapPC, uintptr_t uTrapSP)
72{
73 /* Search by trap program counter. */
74 for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++)
75 if (g_aTrapInfo[i].uTrapPC == uTrapPC)
76 return &g_aTrapInfo[i];
77
78 /* Search by return address. */
79 uintptr_t uReturn = *(uintptr_t *)uTrapSP;
80 for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++)
81 if (g_aTrapInfo[i].uTrapPC + g_aTrapInfo[i].cbInstr == uReturn)
82 return &g_aTrapInfo[i];
83
84 return NULL;
85}
86
87#ifdef USE_SIGNAL
88static void sigHandler(int iSig, siginfo_t *pSigInfo, void *pvSigCtx)
89{
90 ucontext_t *pCtx = (ucontext_t *)pvSigCtx;
91 NOREF(pSigInfo);
92
93# if defined(RT_ARCH_AMD64) && defined(RT_OS_DARWIN)
94 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rip;
95 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rsp;
96 uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno;
97 uintptr_t uErr = pCtx->uc_mcontext->__es.__err;
98
99# elif defined(RT_ARCH_AMD64) && defined(RT_OS_FREEBSD)
100 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_rip;
101 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_rsp;
102 uintptr_t uTrapNo = ~(uintptr_t)0;
103 uintptr_t uErr = ~(uintptr_t)0;
104
105# elif defined(RT_ARCH_AMD64)
106 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RIP];
107 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RSP];
108 uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO];
109 uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR];
110
111# elif defined(RT_ARCH_X86) && defined(RT_OS_DARWIN)
112 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__eip;
113 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__esp;
114 uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno;
115 uintptr_t uErr = pCtx->uc_mcontext->__es.__err;
116
117# elif defined(RT_ARCH_X86) && defined(RT_OS_FREEBSD)
118 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_eip;
119 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_esp;
120 uintptr_t uTrapNo = ~(uintptr_t)0;
121 uintptr_t uErr = ~(uintptr_t)0;
122
123# elif defined(RT_ARCH_X86)
124 uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_EIP];
125 uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_ESP];
126 uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO];
127 uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR];
128
129# else
130 uintptr_t *puPC = NULL;
131 uintptr_t *puSP = NULL;
132 uintptr_t uTrapNo = ~(uintptr_t)0;
133 uintptr_t uErr = ~(uintptr_t)0;
134# endif
135 RTAssertMsg2("tstX86-1: Trap #%#04x err=%#06x at %p\n", uTrapNo, uErr, *puPC);
136
137 PCTRAPINFO pTrapInfo = findTrapInfo(*puPC, *puSP);
138 if (pTrapInfo)
139 {
140 if (pTrapInfo->u8Trap != uTrapNo && uTrapNo != ~(uintptr_t)0)
141 RTAssertMsg2("tstX86-1: Expected #%#04x, got #%#04x\n", pTrapInfo->u8Trap, uTrapNo);
142 else
143 {
144 if (*puPC != pTrapInfo->uTrapPC)
145 *puSP += sizeof(uintptr_t);
146 *puPC = pTrapInfo->uResumePC;
147 return;
148 }
149 }
150 else
151 RTAssertMsg2("tstX86-1: Unexpected trap!\n");
152
153 /* die */
154 signal(iSig, SIG_IGN);
155}
156#else
157
158#endif
159
160int main()
161{
162 /*
163 * Set up the test environment.
164 */
165 RTTEST hTest;
166 RTEXITCODE rcExit = RTTestInitAndCreate("tstX86-1", &hTest);
167 if (rcExit != RTEXITCODE_SUCCESS)
168 return rcExit;
169 RTTestBanner(hTest);
170
171 g_pbEfPage = (uint8_t *)RTTestGuardedAllocTail(hTest, PAGE_SIZE);
172 RTTESTI_CHECK(g_pbEfPage != NULL);
173
174 g_pbEfExecPage = (uint8_t *)RTMemExecAlloc(PAGE_SIZE*2);
175 RTTESTI_CHECK(g_pbEfExecPage != NULL);
176 RTTESTI_CHECK(!((uintptr_t)g_pbEfExecPage & PAGE_OFFSET_MASK));
177 RTTESTI_CHECK_RC(RTMemProtect(g_pbEfExecPage + PAGE_SIZE, PAGE_SIZE, RTMEM_PROT_NONE), VINF_SUCCESS);
178
179#ifdef USE_SIGNAL
180 static int const s_aiSigs[] = { SIGBUS, SIGSEGV, SIGFPE, SIGILL };
181 for (unsigned i = 0; i < RT_ELEMENTS(s_aiSigs); i++)
182 {
183 struct sigaction SigAct;
184 RTTESTI_CHECK_BREAK(sigaction(s_aiSigs[i], NULL, &SigAct) == 0);
185 SigAct.sa_sigaction = sigHandler;
186 SigAct.sa_flags |= SA_SIGINFO;
187 RTTESTI_CHECK(sigaction(s_aiSigs[i], &SigAct, NULL) == 0);
188 }
189#else
190 /** @todo implement me. */
191#endif
192
193
194 if (!RTTestErrorCount(hTest))
195 {
196 /*
197 * Do the testing.
198 */
199 RTTestSub(hTest, "part 1");
200 int32_t rc = x861_Test1();
201 if (rc != 0)
202 RTTestFailed(hTest, "x861_Test1 -> %d", rc);
203 }
204
205 return RTTestSummaryAndDestroy(hTest);
206}
207
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