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-rw-r--r--src/VBox/VMM/testcase/tstX86-1.cpp283
1 files changed, 283 insertions, 0 deletions
diff --git a/src/VBox/VMM/testcase/tstX86-1.cpp b/src/VBox/VMM/testcase/tstX86-1.cpp
new file mode 100644
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+++ b/src/VBox/VMM/testcase/tstX86-1.cpp
@@ -0,0 +1,283 @@
+/* $Id: tstX86-1.cpp $ */
+/** @file
+ * X86 instruction set exploration/testcase #1.
+ */
+
+/*
+ * Copyright (C) 2011-2023 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <iprt/test.h>
+#include <VBox/param.h>
+#include <iprt/mem.h>
+#include <iprt/errcore.h>
+#include <iprt/assert.h>
+#include <iprt/x86.h>
+
+#ifdef RT_OS_WINDOWS
+# include <iprt/win/windows.h>
+#else
+# ifdef RT_OS_DARWIN
+# define _XOPEN_SOURCE
+# endif
+# include <signal.h>
+# include <ucontext.h>
+# define USE_SIGNAL
+#endif
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+typedef struct TRAPINFO
+{
+ uintptr_t uTrapPC;
+ uintptr_t uResumePC;
+ uint8_t u8Trap;
+ uint8_t cbInstr;
+ uint8_t auAlignment[sizeof(uintptr_t) * 2 - 2];
+} TRAPINFO;
+typedef TRAPINFO const *PCTRAPINFO;
+
+
+/*********************************************************************************************************************************
+* Global Variables *
+*********************************************************************************************************************************/
+RT_C_DECLS_BEGIN
+uint8_t *g_pbEfPage = NULL;
+uint8_t *g_pbEfExecPage = NULL;
+extern TRAPINFO g_aTrapInfo[];
+RT_C_DECLS_END
+
+
+/*********************************************************************************************************************************
+* Internal Functions *
+*********************************************************************************************************************************/
+DECLASM(int32_t) x861_Test1(void);
+DECLASM(int32_t) x861_Test2(void);
+DECLASM(int32_t) x861_Test3(void);
+DECLASM(int32_t) x861_Test4(void);
+DECLASM(int32_t) x861_Test5(void);
+DECLASM(int32_t) x861_Test6(void);
+DECLASM(int32_t) x861_Test7(void);
+DECLASM(int32_t) x861_TestFPUInstr1(void);
+
+
+
+static PCTRAPINFO findTrapInfo(uintptr_t uTrapPC, uintptr_t uTrapSP)
+{
+ /* Search by trap program counter. */
+ for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++)
+ if (g_aTrapInfo[i].uTrapPC == uTrapPC)
+ return &g_aTrapInfo[i];
+
+ /* Search by return address. */
+ uintptr_t uReturn = *(uintptr_t *)uTrapSP;
+ for (unsigned i = 0; g_aTrapInfo[i].uTrapPC; i++)
+ if (g_aTrapInfo[i].uTrapPC + g_aTrapInfo[i].cbInstr == uReturn)
+ return &g_aTrapInfo[i];
+
+ return NULL;
+}
+
+#ifdef USE_SIGNAL
+static void sigHandler(int iSig, siginfo_t *pSigInfo, void *pvSigCtx)
+{
+ ucontext_t *pCtx = (ucontext_t *)pvSigCtx;
+ NOREF(pSigInfo);
+
+# if defined(RT_ARCH_AMD64) && defined(RT_OS_DARWIN)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rip;
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__rsp;
+ uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno;
+ uintptr_t uErr = pCtx->uc_mcontext->__es.__err;
+ uintptr_t uCr2 = pCtx->uc_mcontext->__es.__faultvaddr;
+
+# elif defined(RT_ARCH_AMD64) && defined(RT_OS_FREEBSD)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_rip;
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_rsp;
+ uintptr_t uTrapNo = ~(uintptr_t)0;
+ uintptr_t uErr = ~(uintptr_t)0;
+ uintptr_t uCr2 = ~(uintptr_t)0;
+
+# elif defined(RT_ARCH_AMD64)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RIP];
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_RSP];
+ uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO];
+ uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR];
+ uintptr_t uCr2 = pCtx->uc_mcontext.gregs[REG_CR2];
+
+# elif defined(RT_ARCH_X86) && defined(RT_OS_DARWIN)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext->__ss.__eip;
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext->__ss.__esp;
+ uintptr_t uTrapNo = pCtx->uc_mcontext->__es.__trapno;
+ uintptr_t uErr = pCtx->uc_mcontext->__es.__err;
+ uintptr_t uCr2 = pCtx->uc_mcontext->__es.__faultvaddr;
+
+# elif defined(RT_ARCH_X86) && defined(RT_OS_FREEBSD)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.mc_eip;
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.mc_esp;
+ uintptr_t uTrapNo = ~(uintptr_t)0;
+ uintptr_t uErr = ~(uintptr_t)0;
+ uintptr_t uCr2 = ~(uintptr_t)0;
+
+# elif defined(RT_ARCH_X86)
+ uintptr_t *puPC = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_EIP];
+ uintptr_t *puSP = (uintptr_t *)&pCtx->uc_mcontext.gregs[REG_ESP];
+ uintptr_t uTrapNo = pCtx->uc_mcontext.gregs[REG_TRAPNO];
+ uintptr_t uErr = pCtx->uc_mcontext.gregs[REG_ERR];
+# ifdef REG_CR2 /** @todo ... */
+ uintptr_t uCr2 = pCtx->uc_mcontext.gregs[REG_CR2];
+# else
+ uintptr_t uCr2 = ~(uintptr_t)0;
+# endif
+
+# else
+ uintptr_t *puPC = NULL;
+ uintptr_t *puSP = NULL;
+ uintptr_t uTrapNo = ~(uintptr_t)0;
+ uintptr_t uErr = ~(uintptr_t)0;
+ uintptr_t uCr2 = ~(uintptr_t)0;
+# endif
+ if (uTrapNo == X86_XCPT_PF)
+ RTAssertMsg2("tstX86-1: Trap #%#04x err=%#06x at %p / %p\n", uTrapNo, uErr, *puPC, uCr2);
+ else
+ RTAssertMsg2("tstX86-1: Trap #%#04x err=%#06x at %p\n", uTrapNo, uErr, *puPC);
+
+ PCTRAPINFO pTrapInfo = findTrapInfo(*puPC, *puSP);
+ if (pTrapInfo)
+ {
+ if (pTrapInfo->u8Trap != uTrapNo && uTrapNo != ~(uintptr_t)0)
+ RTAssertMsg2("tstX86-1: Expected #%#04x, got #%#04x\n", pTrapInfo->u8Trap, uTrapNo);
+ else
+ {
+ if (*puPC != pTrapInfo->uTrapPC)
+ *puSP += sizeof(uintptr_t);
+ *puPC = pTrapInfo->uResumePC;
+ return;
+ }
+ }
+ else
+ RTAssertMsg2("tstX86-1: Unexpected trap!\n");
+
+ /* die */
+ signal(iSig, SIG_IGN);
+}
+#else
+
+#endif
+
+
+
+int main()
+{
+ /*
+ * Set up the test environment.
+ */
+ RTTEST hTest;
+ RTEXITCODE rcExit = RTTestInitAndCreate("tstX86-1", &hTest);
+ if (rcExit != RTEXITCODE_SUCCESS)
+ return rcExit;
+ RTTestBanner(hTest);
+
+ g_pbEfPage = (uint8_t *)RTTestGuardedAllocTail(hTest, HOST_PAGE_SIZE);
+ RTTESTI_CHECK(g_pbEfPage != NULL);
+
+ g_pbEfExecPage = (uint8_t *)RTMemPageAllocZ(HOST_PAGE_SIZE*2);
+ RTTESTI_CHECK(g_pbEfExecPage != NULL);
+ RTTESTI_CHECK(!((uintptr_t)g_pbEfExecPage & HOST_PAGE_OFFSET_MASK));
+ RTTESTI_CHECK_RC(RTMemProtect(&g_pbEfExecPage[0], HOST_PAGE_SIZE, RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC),
+ VINF_SUCCESS);
+ RTTESTI_CHECK_RC(RTMemProtect(&g_pbEfExecPage[HOST_PAGE_SIZE], HOST_PAGE_SIZE, RTMEM_PROT_NONE),
+ VINF_SUCCESS);
+
+#ifdef USE_SIGNAL
+ static int const s_aiSigs[] = { SIGBUS, SIGSEGV, SIGFPE, SIGILL };
+ for (unsigned i = 0; i < RT_ELEMENTS(s_aiSigs); i++)
+ {
+ struct sigaction SigAct;
+ RTTESTI_CHECK_BREAK(sigaction(s_aiSigs[i], NULL, &SigAct) == 0);
+ SigAct.sa_sigaction = sigHandler;
+ SigAct.sa_flags |= SA_SIGINFO;
+ RTTESTI_CHECK(sigaction(s_aiSigs[i], &SigAct, NULL) == 0);
+ }
+#else
+ /** @todo implement me. */
+#endif
+
+
+ if (!RTTestErrorCount(hTest))
+ {
+ /*
+ * Do the testing.
+ */
+ int32_t rc;
+#if 0
+ RTTestSub(hTest, "Misc 1");
+ rc = x861_Test1();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test1 -> %d", rc);
+
+ RTTestSub(hTest, "Prefixes and groups");
+ rc = x861_Test2();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test2 -> %d", rc);
+
+ RTTestSub(hTest, "fxsave / fxrstor and #PFs");
+ rc = x861_Test3();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test3 -> %d", rc);
+
+ RTTestSub(hTest, "Multibyte NOPs");
+ rc = x861_Test4();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test4 -> %d", rc);
+//#endif
+
+ RTTestSub(hTest, "Odd encodings and odd ends");
+ rc = x861_Test5();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test5 -> %d", rc);
+
+//#if 0
+ RTTestSub(hTest, "Odd floating point encodings");
+ rc = x861_Test6();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test5 -> %d", rc);
+
+ RTTestSub(hTest, "Floating point exceptions ++");
+ rc = x861_Test7();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_Test6 -> %d", rc);
+#endif
+
+ rc = x861_TestFPUInstr1();
+ if (rc != 0)
+ RTTestFailed(hTest, "x861_TestFPUInstr1 -> %d", rc);
+ }
+
+ return RTTestSummaryAndDestroy(hTest);
+}
+
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