| 1 | /* $Id: assert-r0drv-linux.c 13512 2008-10-23 07:21:59Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Assertion Workers, Ring-0 Drivers, Linux.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include "the-linux-kernel.h"
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| 36 |
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/log.h>
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| 39 | #include <iprt/string.h>
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| 40 | #include <iprt/stdarg.h>
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| 41 | #include <iprt/asm.h>
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| 42 |
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| 43 |
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| 44 | /*******************************************************************************
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| 45 | * Global Variables *
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| 46 | *******************************************************************************/
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| 47 | /** The last assert message, 1st part. */
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| 48 | RTDATADECL(char) g_szRTAssertMsg1[1024];
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| 49 | /** The last assert message, 2nd part. */
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| 50 | RTDATADECL(char) g_szRTAssertMsg2[2048];
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| 51 | /** The last assert message, file name. */
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| 52 | RTDATADECL(const char *) volatile g_pszRTAssertExpr;
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| 53 | /** The last assert message, file name. */
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| 54 | RTDATADECL(const char *) volatile g_pszRTAssertFile;
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| 55 | /** The last assert message, line number. */
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| 56 | RTDATADECL(uint32_t) volatile g_u32RTAssertLine;
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| 57 | /** The last assert message, function name. */
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| 58 | RTDATADECL(const char *) volatile g_pszRTAssertFunction;
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| 59 |
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| 60 |
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| 61 | RTDECL(void) AssertMsg1(const char *pszExpr, unsigned uLine, const char *pszFile, const char *pszFunction)
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| 62 | {
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| 63 | #ifdef IN_GUEST_R0
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| 64 | RTLogBackdoorPrintf("\n!!Assertion Failed!!\n"
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| 65 | "Expression: %s\n"
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| 66 | "Location : %s(%d) %s\n",
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| 67 | pszExpr, pszFile, uLine, pszFunction);
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| 68 | #endif
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| 69 |
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| 70 | printk("\r\n!!Assertion Failed!!\r\n"
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| 71 | "Expression: %s\r\n"
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| 72 | "Location : %s(%d) %s\r\n",
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| 73 | pszExpr, pszFile, uLine, pszFunction);
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| 74 |
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| 75 | RTStrPrintf(g_szRTAssertMsg1, sizeof(g_szRTAssertMsg1),
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| 76 | "\n!!Assertion Failed!!\n"
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| 77 | "Expression: %s\n"
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| 78 | "Location : %s(%d) %s\n",
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| 79 | pszExpr, pszFile, uLine, pszFunction);
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| 80 | ASMAtomicUoWritePtr((void * volatile *)&g_pszRTAssertExpr, pszExpr);
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| 81 | ASMAtomicUoWritePtr((void * volatile *)&g_pszRTAssertFile, pszFile);
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| 82 | ASMAtomicUoWritePtr((void * volatile *)&g_pszRTAssertFunction, pszFunction);
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| 83 | ASMAtomicUoWriteU32(&g_u32RTAssertLine, uLine);
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| 84 | }
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| 85 |
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| 86 |
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| 87 | RTDECL(void) AssertMsg2(const char *pszFormat, ...)
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| 88 | {
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| 89 | va_list va;
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| 90 | char szMsg[256];
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| 91 |
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| 92 | #ifdef IN_GUEST_R0
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| 93 | va_start(va, pszFormat);
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| 94 | RTLogBackdoorPrintfV(pszFormat, va);
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| 95 | va_end(va);
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| 96 | #endif
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| 97 |
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| 98 | va_start(va, pszFormat);
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| 99 | RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
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| 100 | szMsg[sizeof(szMsg) - 1] = '\0';
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| 101 | va_end(va);
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| 102 | printk("%s", szMsg);
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| 103 |
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| 104 | va_start(va, pszFormat);
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| 105 | RTStrPrintfV(g_szRTAssertMsg2, sizeof(g_szRTAssertMsg2), pszFormat, va);
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| 106 | va_end(va);
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| 107 | }
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| 108 |
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| 109 |
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| 110 | RTR0DECL(void) RTR0AssertPanicSystem(void)
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| 111 | {
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| 112 | panic("%s%s", g_szRTAssertMsg1, g_szRTAssertMsg2);
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| 113 | }
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| 114 |
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| 115 |
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| 116 | #if defined(RT_OS_LINUX) && defined(IN_MODULE)
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| 117 | /*
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| 118 | * When we build this in the Linux kernel module, we wish to make the
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| 119 | * symbols available to other modules as well.
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| 120 | */
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| 121 | # include "the-linux-kernel.h"
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| 122 | EXPORT_SYMBOL (RTR0AssertPanicSystem);
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| 123 | EXPORT_SYMBOL (AssertMsg1);
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| 124 | EXPORT_SYMBOL (AssertMsg2);
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| 125 | #endif /* RT_OS_LINUX && IN_MODULE */
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