1 | /* $Id: MakeAlternativeSource.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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2 | /** @file
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3 | * MakeAlternative - Generate an Alternative BIOS Source that requires less tools.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2012-2022 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #include <iprt/asm.h>
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33 | #include <iprt/buildconfig.h>
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34 | #include <iprt/ctype.h>
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35 | #include <iprt/dbg.h>
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36 | #include <iprt/err.h>
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37 | #include <iprt/file.h>
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38 | #include <iprt/getopt.h>
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39 | #include <iprt/initterm.h>
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40 | #include <iprt/list.h>
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41 | #include <iprt/mem.h>
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42 | #include <iprt/message.h>
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43 | #include <iprt/string.h>
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44 | #include <iprt/stream.h>
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45 | #include <iprt/x86.h>
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46 |
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47 | #include <VBox/dis.h>
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48 |
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49 |
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50 | /*********************************************************************************************************************************
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51 | * Structures and Typedefs *
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52 | *********************************************************************************************************************************/
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53 | /**
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54 | * A BIOS segment.
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55 | */
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56 | typedef struct BIOSSEG
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57 | {
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58 | char szName[32];
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59 | char szClass[32];
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60 | char szGroup[32];
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61 | RTFAR16 Address;
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62 | uint32_t uFlatAddr;
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63 | uint32_t cb;
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64 | /** RVA into g_hSymMod. */
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65 | uint32_t uRva;
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66 | } BIOSSEG;
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67 | /** Pointer to a BIOS segment. */
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68 | typedef BIOSSEG *PBIOSSEG;
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69 |
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70 |
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71 | /**
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72 | * A BIOS object file.
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73 | */
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74 | typedef struct BIOSOBJFILE
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75 | {
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76 | RTLISTNODE Node;
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77 | char *pszSource;
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78 | char *pszObject;
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79 | } BIOSOBJFILE;
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80 | /** A BIOS object file. */
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81 | typedef BIOSOBJFILE *PBIOSOBJFILE;
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82 |
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83 |
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84 | /**
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85 | * Pointer to a BIOS map parser handle.
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86 | */
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87 | typedef struct BIOSMAP
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88 | {
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89 | /** The stream pointer. */
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90 | PRTSTREAM hStrm;
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91 | /** The file name. */
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92 | const char *pszMapFile;
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93 | /** Set when EOF has been reached. */
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94 | bool fEof;
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95 | /** The current line number (0 based).*/
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96 | uint32_t iLine;
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97 | /** The length of the current line. */
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98 | uint32_t cch;
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99 | /** The offset of the first non-white character on the line. */
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100 | uint32_t offNW;
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101 | /** The line buffer. */
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102 | char szLine[16384];
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103 | } BIOSMAP;
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104 | /** Pointer to a BIOS map parser handle. */
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105 | typedef BIOSMAP *PBIOSMAP;
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106 |
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107 |
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108 | /*********************************************************************************************************************************
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109 | * Global Variables *
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110 | *********************************************************************************************************************************/
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111 | /** The verbosity level.*/
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112 | static unsigned g_cVerbose = 2 /*0*/;
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113 | /** Pointer to the BIOS image. */
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114 | static uint8_t const *g_pbImg;
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115 | /** The size of the BIOS image. */
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116 | static size_t g_cbImg;
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117 |
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118 | /** Debug module for the map file. */
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119 | static RTDBGMOD g_hMapMod = NIL_RTDBGMOD;
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120 | /** The number of BIOS segments found in the map file. */
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121 | static uint32_t g_cSegs = 0;
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122 | /** Array of BIOS segments from the map file. */
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123 | static BIOSSEG g_aSegs[32];
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124 | /** List of BIOSOBJFILE. */
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125 | static RTLISTANCHOR g_ObjList;
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126 |
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127 | /** Debug module with symbols. */
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128 | static RTDBGMOD g_hSymMod = NIL_RTDBGMOD;
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129 |
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130 | /** The output stream. */
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131 | static PRTSTREAM g_hStrmOutput = NULL;
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132 |
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133 | /** The type of BIOS we're working on. */
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134 | static enum BIOSTYPE
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135 | {
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136 | kBiosType_System = 0,
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137 | kBiosType_Vga
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138 | } g_enmBiosType = kBiosType_System;
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139 | /** The flat ROM base address. */
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140 | static uint32_t g_uBiosFlatBase = 0xf0000;
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141 |
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142 |
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143 | static bool outputPrintfV(const char *pszFormat, va_list va)
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144 | {
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145 | int rc = RTStrmPrintfV(g_hStrmOutput, pszFormat, va);
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146 | if (RT_FAILURE(rc))
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147 | {
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148 | RTMsgError("Output error: %Rrc\n", rc);
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149 | return false;
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150 | }
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151 | return true;
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152 | }
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153 |
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154 |
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155 | static bool outputPrintf(const char *pszFormat, ...)
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156 | {
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157 | va_list va;
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158 | va_start(va, pszFormat);
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159 | bool fRc = outputPrintfV(pszFormat, va);
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160 | va_end(va);
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161 | return fRc;
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162 | }
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163 |
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164 |
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165 | /**
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166 | * Opens the output file for writing.
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167 | *
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168 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
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169 | * @param pszOutput Path to the output file.
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170 | */
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171 | static RTEXITCODE OpenOutputFile(const char *pszOutput)
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172 | {
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173 | if (!pszOutput)
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174 | g_hStrmOutput = g_pStdOut;
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175 | else
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176 | {
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177 | int rc = RTStrmOpen(pszOutput, "w", &g_hStrmOutput);
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178 | if (RT_FAILURE(rc))
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179 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to open output file '%s': %Rrc", pszOutput, rc);
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180 | }
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181 | return RTEXITCODE_SUCCESS;
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182 | }
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183 |
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184 |
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185 | /**
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186 | * Displays a disassembly error and returns @c false.
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187 | *
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188 | * @returns @c false.
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189 | * @param pszFormat The error format string.
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190 | * @param ... Format argument.
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191 | */
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192 | static bool disError(const char *pszFormat, ...)
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193 | {
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194 | va_list va;
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195 | va_start(va, pszFormat);
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196 | RTMsgErrorV(pszFormat, va);
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197 | va_end(va);
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198 | return false;
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199 | }
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200 |
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201 |
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202 | /**
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203 | * Output the disassembly file header.
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204 | *
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205 | * @returns @c true on success,
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206 | */
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207 | static bool disFileHeader(void)
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208 | {
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209 | bool fRc;
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210 | fRc = outputPrintf("; $Id: MakeAlternativeSource.cpp 96407 2022-08-22 17:43:14Z vboxsync $ \n"
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211 | ";; @file\n"
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212 | "; Auto Generated source file. Do not edit.\n"
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213 | ";\n"
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214 | );
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215 | if (!fRc)
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216 | return fRc;
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217 |
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218 | /*
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219 | * List the header of each source file, up to and including the
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220 | * copyright notice.
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221 | */
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222 | bool fNeedLgplDisclaimer = false;
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223 | PBIOSOBJFILE pObjFile;
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224 | RTListForEach(&g_ObjList, pObjFile, BIOSOBJFILE, Node)
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225 | {
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226 | PRTSTREAM hStrm;
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227 | int rc = RTStrmOpen(pObjFile->pszSource, "r", &hStrm);
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228 | if (RT_SUCCESS(rc))
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229 | {
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230 | fRc = outputPrintf("\n"
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231 | ";\n"
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232 | "; Source file: %Rbn\n"
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233 | ";\n"
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234 | , pObjFile->pszSource);
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235 | uint32_t iLine = 0;
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236 | bool fSeenCopyright = false;
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237 | char szLine[4096];
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238 | while ((rc = RTStrmGetLine(hStrm, szLine, sizeof(szLine))) == VINF_SUCCESS)
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239 | {
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240 | iLine++;
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241 |
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242 | /* Check if we're done. */
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243 | char *psz = RTStrStrip(szLine);
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244 | if ( fSeenCopyright
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245 | && ( (psz[0] == '*' && psz[1] == '/')
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246 | || psz[0] == '\0') )
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247 | break;
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248 |
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249 | /* Strip comment suffix. */
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250 | size_t cch = strlen(psz);
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251 | if (cch >= 2 && psz[cch - 1] == '/' && psz[cch - 2] == '*')
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252 | {
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253 | psz[cch - 2] = '\0';
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254 | RTStrStripR(psz);
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255 | }
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256 |
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257 | /* Skip line prefix. */
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258 | if (psz[0] == '/' && psz[1] == '*')
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259 | psz += 2;
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260 | else if (psz[0] == '*')
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261 | psz += 1;
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262 | else
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263 | while (*psz == ';')
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264 | psz++;
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265 | if (RT_C_IS_SPACE(*psz))
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266 | psz++;
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267 |
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268 | /* Skip the doxygen file tag line. */
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269 | if (!strcmp(psz, "* @file") || !strcmp(psz, "@file"))
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270 | continue;
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271 |
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272 | /* Detect copyright section. */
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273 | if ( !fSeenCopyright
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274 | && ( strstr(psz, "Copyright")
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275 | || strstr(psz, "copyright")) )
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276 | fSeenCopyright = true;
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277 |
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278 | /* Detect LGPL. */
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279 | if (strstr(psz, "LGPL"))
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280 | fNeedLgplDisclaimer = true;
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281 |
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282 | fRc = outputPrintf("; %s\n", psz) && fRc;
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283 | }
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284 |
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285 | RTStrmClose(hStrm);
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286 | if (rc != VINF_SUCCESS)
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287 | return disError("Error reading '%s': rc=%Rrc iLine=%u", pObjFile->pszSource, rc, iLine);
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288 | }
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289 | }
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290 |
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291 | /*
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292 | * Add Oracle LGPL disclaimer.
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293 | */
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294 | if (fNeedLgplDisclaimer)
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295 | outputPrintf("\n"
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296 | ";\n"
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297 | "; Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice\n"
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298 | "; other than GPL or LGPL is available it will apply instead, Oracle elects to use only\n"
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299 | "; the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where\n"
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300 | "; a choice of LGPL license versions is made available with the language indicating\n"
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301 | "; that LGPLv2 or any later version may be used, or where a choice of which version\n"
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302 | "; of the LGPL is applied is otherwise unspecified.\n"
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303 | ";\n"
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304 | "\n");
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305 |
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306 | /*
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307 | * Set the org.
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308 | */
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309 | fRc = outputPrintf("\n"
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310 | "\n"
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311 | "\n"
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312 | ) && fRc;
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313 | return fRc;
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314 | }
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315 |
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316 |
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317 | /**
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318 | * Checks if a byte sequence could be a string litteral.
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319 | *
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320 | * @returns @c true if it is, @c false if it isn't.
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321 | * @param uFlatAddr The address of the byte sequence.
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322 | * @param cb The length of the sequence.
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323 | */
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324 | static bool disIsString(uint32_t uFlatAddr, uint32_t cb)
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325 | {
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326 | if (cb < 6)
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327 | return false;
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328 |
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329 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
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330 | while (cb > 0)
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331 | {
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332 | if ( !RT_C_IS_PRINT(*pb)
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333 | && *pb != '\r'
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334 | && *pb != '\n'
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335 | && *pb != '\t')
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336 | {
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337 | if (*pb == '\0')
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338 | {
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339 | do
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340 | {
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341 | pb++;
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342 | cb--;
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343 | } while (cb > 0 && *pb == '\0');
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344 | return cb == 0;
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345 | }
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346 | return false;
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347 | }
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348 | pb++;
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349 | cb--;
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350 | }
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351 |
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352 | return true;
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353 | }
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354 |
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355 |
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356 | #if 0 /* unused */
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357 | /**
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358 | * Checks if a dword could be a far 16:16 BIOS address.
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359 | *
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360 | * @returns @c true if it is, @c false if it isn't.
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361 | * @param uFlatAddr The address of the dword.
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362 | */
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363 | static bool disIsFarBiosAddr(uint32_t uFlatAddr)
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364 | {
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365 | uint16_t const *pu16 = (uint16_t const *)&g_pbImg[uFlatAddr - g_uBiosFlatBase];
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366 | if (pu16[1] < 0xf000)
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367 | return false;
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368 | if (pu16[1] > 0xfff0)
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369 | return false;
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370 | uint32_t uFlatAddr2 = (uint32_t)(pu16[1] << 4) | pu16[0];
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371 | if (uFlatAddr2 >= g_uBiosFlatBase + g_cbImg)
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372 | return false;
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373 | return true;
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374 | }
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375 | #endif
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376 |
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377 |
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378 | static bool disByteData(uint32_t uFlatAddr, uint32_t cb)
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379 | {
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380 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
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381 | size_t cbOnLine = 0;
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382 | while (cb-- > 0)
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383 | {
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384 | bool fRc;
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385 | if (cbOnLine >= 16)
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386 | {
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387 | fRc = outputPrintf("\n"
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388 | " db 0%02xh", *pb);
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389 | cbOnLine = 1;
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390 | }
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391 | else if (!cbOnLine)
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392 | {
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393 | fRc = outputPrintf(" db 0%02xh", *pb);
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394 | cbOnLine = 1;
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395 | }
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396 | else
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397 | {
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398 | fRc = outputPrintf(", 0%02xh", *pb);
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399 | cbOnLine++;
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400 | }
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401 | if (!fRc)
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402 | return false;
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403 | pb++;
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404 | }
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405 | return outputPrintf("\n");
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406 | }
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407 |
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408 |
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409 | static bool disWordData(uint32_t uFlatAddr, uint32_t cb)
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410 | {
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411 | if (cb & 1)
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412 | return disError("disWordData expects word aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
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413 |
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414 | uint16_t const *pu16 = (uint16_t const *)&g_pbImg[uFlatAddr - g_uBiosFlatBase];
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415 | size_t cbOnLine = 0;
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416 | while (cb > 0)
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417 | {
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418 | bool fRc;
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419 | if (cbOnLine >= 16)
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420 | {
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421 | fRc = outputPrintf("\n"
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422 | " dw 0%04xh", *pu16);
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423 | cbOnLine = 2;
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424 | }
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425 | else if (!cbOnLine)
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426 | {
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427 | fRc = outputPrintf(" dw 0%04xh", *pu16);
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428 | cbOnLine = 2;
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429 | }
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430 | else
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431 | {
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432 | fRc = outputPrintf(", 0%04xh", *pu16);
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433 | cbOnLine += 2;
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434 | }
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435 | if (!fRc)
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436 | return false;
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437 | pu16++;
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438 | cb -= 2;
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439 | }
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440 | return outputPrintf("\n");
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441 | }
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442 |
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443 |
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444 | static bool disDWordData(uint32_t uFlatAddr, uint32_t cb)
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445 | {
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446 | if (cb & 3)
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447 | return disError("disWordData expects dword aligned size: cb=%#x uFlatAddr=%#x", uFlatAddr, cb);
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448 |
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449 | uint32_t const *pu32 = (uint32_t const *)&g_pbImg[uFlatAddr - g_uBiosFlatBase];
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450 | size_t cbOnLine = 0;
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451 | while (cb > 0)
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452 | {
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453 | bool fRc;
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454 | if (cbOnLine >= 16)
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455 | {
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456 | fRc = outputPrintf("\n"
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457 | " dd 0%08xh", *pu32);
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458 | cbOnLine = 4;
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459 | }
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460 | else if (!cbOnLine)
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461 | {
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462 | fRc = outputPrintf(" dd 0%08xh", *pu32);
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463 | cbOnLine = 4;
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464 | }
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465 | else
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466 | {
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467 | fRc = outputPrintf(", 0%08xh", *pu32);
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468 | cbOnLine += 4;
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469 | }
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470 | if (!fRc)
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471 | return false;
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472 | pu32++;
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473 | cb -= 4;
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474 | }
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475 | return outputPrintf("\n");
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476 | }
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477 |
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478 |
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479 | static bool disStringData(uint32_t uFlatAddr, uint32_t cb)
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480 | {
|
---|
481 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
|
---|
482 | uint32_t cchOnLine = 0;
|
---|
483 | while (cb > 0)
|
---|
484 | {
|
---|
485 | /* Line endings and beginnings. */
|
---|
486 | if (cchOnLine >= 72)
|
---|
487 | {
|
---|
488 | if (!outputPrintf("\n"))
|
---|
489 | return false;
|
---|
490 | cchOnLine = 0;
|
---|
491 | }
|
---|
492 | if ( !cchOnLine
|
---|
493 | && !outputPrintf(" db "))
|
---|
494 | return false;
|
---|
495 |
|
---|
496 | /* See how many printable character we've got. */
|
---|
497 | uint32_t cchPrintable = 0;
|
---|
498 | while ( cchPrintable < cb
|
---|
499 | && RT_C_IS_PRINT(pb[cchPrintable])
|
---|
500 | && pb[cchPrintable] != '\'')
|
---|
501 | cchPrintable++;
|
---|
502 |
|
---|
503 | bool fRc = true;
|
---|
504 | if (cchPrintable)
|
---|
505 | {
|
---|
506 | if (cchPrintable + cchOnLine > 72)
|
---|
507 | cchPrintable = 72 - cchOnLine;
|
---|
508 | if (cchOnLine)
|
---|
509 | {
|
---|
510 | fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
|
---|
511 | cchOnLine += 4 + cchPrintable;
|
---|
512 | }
|
---|
513 | else
|
---|
514 | {
|
---|
515 | fRc = outputPrintf("'%.*s'", cchPrintable, pb);
|
---|
516 | cchOnLine += 2 + cchPrintable;
|
---|
517 | }
|
---|
518 | pb += cchPrintable;
|
---|
519 | cb -= cchPrintable;
|
---|
520 | }
|
---|
521 | else
|
---|
522 | {
|
---|
523 | if (cchOnLine)
|
---|
524 | {
|
---|
525 | fRc = outputPrintf(", 0%02xh", *pb);
|
---|
526 | cchOnLine += 6;
|
---|
527 | }
|
---|
528 | else
|
---|
529 | {
|
---|
530 | fRc = outputPrintf("0%02xh", *pb);
|
---|
531 | cchOnLine += 4;
|
---|
532 | }
|
---|
533 | pb++;
|
---|
534 | cb--;
|
---|
535 | }
|
---|
536 | if (!fRc)
|
---|
537 | return false;
|
---|
538 | }
|
---|
539 | return outputPrintf("\n");
|
---|
540 | }
|
---|
541 |
|
---|
542 |
|
---|
543 | /**
|
---|
544 | * For dumping a portion of a string table.
|
---|
545 | *
|
---|
546 | * @returns @c true on success, @c false on failure.
|
---|
547 | * @param uFlatAddr The start address.
|
---|
548 | * @param cb The size of the string table.
|
---|
549 | */
|
---|
550 | static bool disStringsData(uint32_t uFlatAddr, uint32_t cb)
|
---|
551 | {
|
---|
552 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
|
---|
553 | uint32_t cchOnLine = 0;
|
---|
554 | uint8_t bPrev = 255;
|
---|
555 | while (cb > 0)
|
---|
556 | {
|
---|
557 | /* Line endings and beginnings. */
|
---|
558 | if ( cchOnLine >= 72
|
---|
559 | || (bPrev == '\0' && *pb != '\0'))
|
---|
560 | {
|
---|
561 | if (!outputPrintf("\n"))
|
---|
562 | return false;
|
---|
563 | cchOnLine = 0;
|
---|
564 | }
|
---|
565 | if ( !cchOnLine
|
---|
566 | && !outputPrintf(" db "))
|
---|
567 | return false;
|
---|
568 |
|
---|
569 | /* See how many printable character we've got. */
|
---|
570 | uint32_t cchPrintable = 0;
|
---|
571 | while ( cchPrintable < cb
|
---|
572 | && RT_C_IS_PRINT(pb[cchPrintable])
|
---|
573 | && pb[cchPrintable] != '\'')
|
---|
574 | cchPrintable++;
|
---|
575 |
|
---|
576 | bool fRc = true;
|
---|
577 | if (cchPrintable)
|
---|
578 | {
|
---|
579 | if (cchPrintable + cchOnLine > 72)
|
---|
580 | cchPrintable = 72 - cchOnLine;
|
---|
581 | if (cchOnLine)
|
---|
582 | {
|
---|
583 | fRc = outputPrintf(", '%.*s'", cchPrintable, pb);
|
---|
584 | cchOnLine += 4 + cchPrintable;
|
---|
585 | }
|
---|
586 | else
|
---|
587 | {
|
---|
588 | fRc = outputPrintf("'%.*s'", cchPrintable, pb);
|
---|
589 | cchOnLine += 2 + cchPrintable;
|
---|
590 | }
|
---|
591 | pb += cchPrintable;
|
---|
592 | cb -= cchPrintable;
|
---|
593 | }
|
---|
594 | else
|
---|
595 | {
|
---|
596 | if (cchOnLine)
|
---|
597 | {
|
---|
598 | fRc = outputPrintf(", 0%02xh", *pb);
|
---|
599 | cchOnLine += 6;
|
---|
600 | }
|
---|
601 | else
|
---|
602 | {
|
---|
603 | fRc = outputPrintf("0%02xh", *pb);
|
---|
604 | cchOnLine += 4;
|
---|
605 | }
|
---|
606 | pb++;
|
---|
607 | cb--;
|
---|
608 | }
|
---|
609 | if (!fRc)
|
---|
610 | return false;
|
---|
611 | bPrev = pb[-1];
|
---|
612 | }
|
---|
613 | return outputPrintf("\n");
|
---|
614 | }
|
---|
615 |
|
---|
616 |
|
---|
617 | /**
|
---|
618 | * Minds the gap between two segments.
|
---|
619 | *
|
---|
620 | * Gaps should generally be zero filled.
|
---|
621 | *
|
---|
622 | * @returns @c true on success, @c false on failure.
|
---|
623 | * @param uFlatAddr The address of the gap.
|
---|
624 | * @param cbPadding The size of the gap.
|
---|
625 | */
|
---|
626 | static bool disCopySegmentGap(uint32_t uFlatAddr, uint32_t cbPadding)
|
---|
627 | {
|
---|
628 | if (g_cVerbose > 0)
|
---|
629 | outputPrintf("\n"
|
---|
630 | " ; Padding %#x bytes at %#x\n", cbPadding, uFlatAddr);
|
---|
631 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
|
---|
632 | if (ASMMemIsZero(pb, cbPadding))
|
---|
633 | return outputPrintf(" times %u db 0\n", cbPadding);
|
---|
634 |
|
---|
635 | return disByteData(uFlatAddr, cbPadding);
|
---|
636 | }
|
---|
637 |
|
---|
638 |
|
---|
639 | /**
|
---|
640 | * Worker for disGetNextSymbol that only does the looking up, no RTDBSYMBOL::cb
|
---|
641 | * calc.
|
---|
642 | *
|
---|
643 | * @param uFlatAddr The address to start searching at.
|
---|
644 | * @param cbMax The size of the search range.
|
---|
645 | * @param poff Where to return the offset between the symbol
|
---|
646 | * and @a uFlatAddr.
|
---|
647 | * @param pSym Where to return the symbol data.
|
---|
648 | */
|
---|
649 | static void disGetNextSymbolWorker(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
|
---|
650 | {
|
---|
651 | RTINTPTR offMap = RTINTPTR_MAX;
|
---|
652 | RTDBGSYMBOL MapSym;
|
---|
653 | int rcMap = RTDbgModSymbolByAddr(g_hMapMod, RTDBGSEGIDX_RVA, uFlatAddr, RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL, &offMap, &MapSym);
|
---|
654 |
|
---|
655 | RTINTPTR off = RTINTPTR_MAX;
|
---|
656 | int rc = RTDbgModSymbolByAddr(g_hSymMod, RTDBGSEGIDX_RVA, uFlatAddr - g_uBiosFlatBase,
|
---|
657 | RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL, &off, pSym);
|
---|
658 | if ( RT_SUCCESS(rc)
|
---|
659 | && RT_ABS(off) <= RT_ABS(offMap))
|
---|
660 | pSym->Value += g_uBiosFlatBase;
|
---|
661 | else
|
---|
662 | {
|
---|
663 | *pSym = MapSym;
|
---|
664 | off = offMap;
|
---|
665 | rc = rcMap;
|
---|
666 | }
|
---|
667 | if (RT_SUCCESS(rc))
|
---|
668 | {
|
---|
669 | /* negative offset, indicates beyond. */
|
---|
670 | if (off <= 0)
|
---|
671 | {
|
---|
672 | *poff = (uint32_t)-off;
|
---|
673 |
|
---|
674 | /* Mangle symbols the assembler might confuse with instructions. */
|
---|
675 | size_t cchName = strlen(pSym->szName);
|
---|
676 | if ( cchName <= 4
|
---|
677 | && ( strcmp("wait", pSym->szName) == 0
|
---|
678 | || strcmp("hlt", pSym->szName) == 0))
|
---|
679 | {
|
---|
680 | memmove(&pSym->szName[1], &pSym->szName[0], cchName);
|
---|
681 | pSym->szName[0] = '_';
|
---|
682 | pSym->szName[cchName + 1] = '_';
|
---|
683 | pSym->szName[cchName + 2] = '\0';
|
---|
684 | }
|
---|
685 | return;
|
---|
686 | }
|
---|
687 |
|
---|
688 | outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> off=%RTptr cb=%RTptr uValue=%RTptr '%s'\n",
|
---|
689 | uFlatAddr, off, pSym->cb, pSym->Value, pSym->szName);
|
---|
690 | }
|
---|
691 | else if (rc != VERR_SYMBOL_NOT_FOUND)
|
---|
692 | outputPrintf(" ; !! RTDbgModSymbolByAddr(,,%#x,,) -> %Rrc\n", uFlatAddr, rc);
|
---|
693 |
|
---|
694 | RTStrPrintf(pSym->szName, sizeof(pSym->szName), "_dummy_addr_%#x", uFlatAddr + cbMax);
|
---|
695 | pSym->Value = uFlatAddr + cbMax;
|
---|
696 | pSym->cb = 0;
|
---|
697 | pSym->offSeg = uFlatAddr + cbMax;
|
---|
698 | pSym->iSeg = RTDBGSEGIDX_RVA;
|
---|
699 | pSym->iOrdinal = 0;
|
---|
700 | pSym->fFlags = 0;
|
---|
701 | *poff = cbMax;
|
---|
702 | }
|
---|
703 |
|
---|
704 |
|
---|
705 | /**
|
---|
706 | * Gets the symbol at or after the given address.
|
---|
707 | *
|
---|
708 | * If there are no symbols in the specified range, @a pSym and @a poff will be
|
---|
709 | * set up to indicate a symbol at the first byte after the range.
|
---|
710 | *
|
---|
711 | * @param uFlatAddr The address to start searching at.
|
---|
712 | * @param cbMax The size of the search range.
|
---|
713 | * @param poff Where to return the offset between the symbol
|
---|
714 | * and @a uFlatAddr.
|
---|
715 | * @param pSym Where to return the symbol data.
|
---|
716 | */
|
---|
717 | static void disGetNextSymbol(uint32_t uFlatAddr, uint32_t cbMax, uint32_t *poff, PRTDBGSYMBOL pSym)
|
---|
718 | {
|
---|
719 | disGetNextSymbolWorker(uFlatAddr, cbMax, poff, pSym);
|
---|
720 | if ( *poff < cbMax
|
---|
721 | && pSym->cb == 0)
|
---|
722 | {
|
---|
723 | if (*poff + 1 < cbMax)
|
---|
724 | {
|
---|
725 | uint32_t off2;
|
---|
726 | RTDBGSYMBOL Sym2;
|
---|
727 | disGetNextSymbolWorker(uFlatAddr + *poff + 1, cbMax - *poff - 1, &off2, &Sym2);
|
---|
728 | pSym->cb = off2 + 1;
|
---|
729 | }
|
---|
730 | else
|
---|
731 | pSym->cb = 1;
|
---|
732 | }
|
---|
733 | if (pSym->cb > cbMax - *poff)
|
---|
734 | pSym->cb = cbMax - *poff;
|
---|
735 |
|
---|
736 | if (g_cVerbose > 1)
|
---|
737 | outputPrintf(" ; disGetNextSymbol %#x LB %#x -> off=%#x cb=%RTptr uValue=%RTptr '%s'\n",
|
---|
738 | uFlatAddr, cbMax, *poff, pSym->cb, pSym->Value, pSym->szName);
|
---|
739 |
|
---|
740 | }
|
---|
741 |
|
---|
742 |
|
---|
743 | /**
|
---|
744 | * For dealing with the const segment (string constants).
|
---|
745 | *
|
---|
746 | * @returns @c true on success, @c false on failure.
|
---|
747 | * @param iSeg The segment.
|
---|
748 | */
|
---|
749 | static bool disConstSegment(uint32_t iSeg)
|
---|
750 | {
|
---|
751 | uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
|
---|
752 | uint32_t cb = g_aSegs[iSeg].cb;
|
---|
753 |
|
---|
754 | while (cb > 0)
|
---|
755 | {
|
---|
756 | uint32_t off;
|
---|
757 | RTDBGSYMBOL Sym;
|
---|
758 | disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
|
---|
759 |
|
---|
760 | if (off > 0)
|
---|
761 | {
|
---|
762 | if (!disStringsData(uFlatAddr, off))
|
---|
763 | return false;
|
---|
764 | cb -= off;
|
---|
765 | uFlatAddr += off;
|
---|
766 | off = 0;
|
---|
767 | if (!cb)
|
---|
768 | break;
|
---|
769 | }
|
---|
770 |
|
---|
771 | bool fRc;
|
---|
772 | if (off == 0)
|
---|
773 | {
|
---|
774 | size_t cchName = strlen(Sym.szName);
|
---|
775 | fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
|
---|
776 | if (!fRc)
|
---|
777 | return false;
|
---|
778 | fRc = disStringsData(uFlatAddr, Sym.cb);
|
---|
779 | uFlatAddr += Sym.cb;
|
---|
780 | cb -= Sym.cb;
|
---|
781 | }
|
---|
782 | else
|
---|
783 | {
|
---|
784 | fRc = disStringsData(uFlatAddr, Sym.cb);
|
---|
785 | uFlatAddr += cb;
|
---|
786 | cb = 0;
|
---|
787 | }
|
---|
788 | if (!fRc)
|
---|
789 | return false;
|
---|
790 | }
|
---|
791 |
|
---|
792 | return true;
|
---|
793 | }
|
---|
794 |
|
---|
795 |
|
---|
796 |
|
---|
797 | static bool disDataSegment(uint32_t iSeg)
|
---|
798 | {
|
---|
799 | uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
|
---|
800 | uint32_t cb = g_aSegs[iSeg].cb;
|
---|
801 |
|
---|
802 | while (cb > 0)
|
---|
803 | {
|
---|
804 | uint32_t off;
|
---|
805 | RTDBGSYMBOL Sym;
|
---|
806 | disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
|
---|
807 |
|
---|
808 | if (off > 0)
|
---|
809 | {
|
---|
810 | if (!disByteData(uFlatAddr, off))
|
---|
811 | return false;
|
---|
812 | cb -= off;
|
---|
813 | uFlatAddr += off;
|
---|
814 | off = 0;
|
---|
815 | if (!cb)
|
---|
816 | break;
|
---|
817 | }
|
---|
818 |
|
---|
819 | bool fRc;
|
---|
820 | if (off == 0)
|
---|
821 | {
|
---|
822 | size_t cchName = strlen(Sym.szName);
|
---|
823 | fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
|
---|
824 | if (!fRc)
|
---|
825 | return false;
|
---|
826 |
|
---|
827 | if (Sym.cb == 2)
|
---|
828 | fRc = disWordData(uFlatAddr, 2);
|
---|
829 | //else if (Sym.cb == 4 && disIsFarBiosAddr(uFlatAddr))
|
---|
830 | // fRc = disDWordData(uFlatAddr, 4);
|
---|
831 | else if (Sym.cb == 4)
|
---|
832 | fRc = disDWordData(uFlatAddr, 4);
|
---|
833 | else if (disIsString(uFlatAddr, Sym.cb))
|
---|
834 | fRc = disStringData(uFlatAddr, Sym.cb);
|
---|
835 | else
|
---|
836 | fRc = disByteData(uFlatAddr, Sym.cb);
|
---|
837 |
|
---|
838 | uFlatAddr += Sym.cb;
|
---|
839 | cb -= Sym.cb;
|
---|
840 | }
|
---|
841 | else
|
---|
842 | {
|
---|
843 | fRc = disByteData(uFlatAddr, cb);
|
---|
844 | uFlatAddr += cb;
|
---|
845 | cb = 0;
|
---|
846 | }
|
---|
847 | if (!fRc)
|
---|
848 | return false;
|
---|
849 | }
|
---|
850 |
|
---|
851 | return true;
|
---|
852 | }
|
---|
853 |
|
---|
854 |
|
---|
855 | static bool disIsCodeAndAdjustSize(uint32_t uFlatAddr, PRTDBGSYMBOL pSym, PBIOSSEG pSeg)
|
---|
856 | {
|
---|
857 | RT_NOREF_PV(uFlatAddr);
|
---|
858 |
|
---|
859 | switch (g_enmBiosType)
|
---|
860 | {
|
---|
861 | /*
|
---|
862 | * This is for the PC BIOS.
|
---|
863 | */
|
---|
864 | case kBiosType_System:
|
---|
865 | if (!strcmp(pSeg->szName, "BIOSSEG"))
|
---|
866 | {
|
---|
867 | if ( !strcmp(pSym->szName, "rom_fdpt")
|
---|
868 | || !strcmp(pSym->szName, "pmbios_gdt")
|
---|
869 | || !strcmp(pSym->szName, "pmbios_gdt_desc")
|
---|
870 | || !strcmp(pSym->szName, "_pmode_IDT")
|
---|
871 | || !strcmp(pSym->szName, "_rmode_IDT")
|
---|
872 | || !strncmp(pSym->szName, RT_STR_TUPLE("font"))
|
---|
873 | || !strcmp(pSym->szName, "bios_string")
|
---|
874 | || !strcmp(pSym->szName, "vector_table")
|
---|
875 | || !strcmp(pSym->szName, "pci_routing_table_structure")
|
---|
876 | || !strcmp(pSym->szName, "_pci_routing_table")
|
---|
877 | )
|
---|
878 | return false;
|
---|
879 | }
|
---|
880 |
|
---|
881 | if (!strcmp(pSym->szName, "cpu_reset"))
|
---|
882 | pSym->cb = RT_MIN(pSym->cb, 5);
|
---|
883 | else if (!strcmp(pSym->szName, "pci_init_end"))
|
---|
884 | pSym->cb = RT_MIN(pSym->cb, 3);
|
---|
885 | break;
|
---|
886 |
|
---|
887 | /*
|
---|
888 | * This is for the VGA BIOS.
|
---|
889 | */
|
---|
890 | case kBiosType_Vga:
|
---|
891 | break;
|
---|
892 | }
|
---|
893 |
|
---|
894 | return true;
|
---|
895 | }
|
---|
896 |
|
---|
897 |
|
---|
898 | static bool disIs16BitCode(const char *pszSymbol)
|
---|
899 | {
|
---|
900 | RT_NOREF_PV(pszSymbol);
|
---|
901 | return true;
|
---|
902 | }
|
---|
903 |
|
---|
904 |
|
---|
905 | static bool disIsMemoryParameter(PCDISOPPARAM pParam, uint16_t fParam)
|
---|
906 | {
|
---|
907 | return fParam != OP_PARM_NONE
|
---|
908 | && DISUSE_IS_EFFECTIVE_ADDR(pParam->fUse);
|
---|
909 | }
|
---|
910 |
|
---|
911 |
|
---|
912 | static bool disAccessesMemory(PCDISCPUSTATE pCpuState)
|
---|
913 | {
|
---|
914 | PCDISOPCODE pCurInstr = pCpuState->pCurInstr;
|
---|
915 | return disIsMemoryParameter(&pCpuState->Param1, pCurInstr->fParam1)
|
---|
916 | || disIsMemoryParameter(&pCpuState->Param2, pCurInstr->fParam2)
|
---|
917 | || disIsMemoryParameter(&pCpuState->Param3, pCurInstr->fParam3)
|
---|
918 | || disIsMemoryParameter(&pCpuState->Param4, pCurInstr->fParam4);
|
---|
919 | }
|
---|
920 |
|
---|
921 |
|
---|
922 | /**
|
---|
923 | * Deals with instructions that YASM will assemble differently than WASM/WCC.
|
---|
924 | */
|
---|
925 | static size_t disHandleYasmDifferences(PDISCPUSTATE pCpuState, uint32_t uFlatAddr, uint32_t cbInstr,
|
---|
926 | char *pszBuf, size_t cbBuf, size_t cchUsed)
|
---|
927 | {
|
---|
928 | bool fDifferent = DISFormatYasmIsOddEncoding(pCpuState);
|
---|
929 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
|
---|
930 |
|
---|
931 | /*
|
---|
932 | * Disassembler bugs.
|
---|
933 | */
|
---|
934 | /** @todo Group 1a and 11 seems to be disassembled incorrectly when
|
---|
935 | * modrm.reg != 0. Those encodings should be invalid AFAICT. */
|
---|
936 |
|
---|
937 | if ( ( pCpuState->bOpCode == 0x8f /* group 1a */
|
---|
938 | || pCpuState->bOpCode == 0xc7 /* group 11 */
|
---|
939 | || pCpuState->bOpCode == 0xc6 /* group 11 - not verified */
|
---|
940 | )
|
---|
941 | && pCpuState->ModRM.Bits.Reg != 0)
|
---|
942 | fDifferent = true;
|
---|
943 | /*
|
---|
944 | * Check these out and consider adding them to DISFormatYasmIsOddEncoding.
|
---|
945 | */
|
---|
946 | else if ( pb[0] == 0xf3
|
---|
947 | && pb[1] == 0x66
|
---|
948 | && pb[2] == 0x6d)
|
---|
949 | fDifferent = true; /* rep insd - prefix switched. */
|
---|
950 | else if ( pb[0] == 0xc6
|
---|
951 | && pb[1] == 0xc5
|
---|
952 | && pb[2] == 0xba)
|
---|
953 | fDifferent = true; /* mov ch, 0bah - yasm uses a short sequence: 0xb5 0xba. */
|
---|
954 |
|
---|
955 | /*
|
---|
956 | * 32-bit retf.
|
---|
957 | */
|
---|
958 | else if ( pb[0] == 0x66
|
---|
959 | && pb[1] == 0xcb)
|
---|
960 | fDifferent = true;
|
---|
961 |
|
---|
962 | /*
|
---|
963 | * Handle different stuff.
|
---|
964 | */
|
---|
965 | if (fDifferent)
|
---|
966 | {
|
---|
967 | disByteData(uFlatAddr, cbInstr); /* lazy bird. */
|
---|
968 |
|
---|
969 | if (cchUsed + 2 < cbBuf)
|
---|
970 | {
|
---|
971 | memmove(pszBuf + 2, pszBuf, cchUsed + 1); /* include terminating \0 */
|
---|
972 | cchUsed += 2;
|
---|
973 | }
|
---|
974 |
|
---|
975 | pszBuf[0] = ';';
|
---|
976 | pszBuf[1] = ' ';
|
---|
977 | }
|
---|
978 |
|
---|
979 | return cchUsed;
|
---|
980 | }
|
---|
981 |
|
---|
982 |
|
---|
983 | /**
|
---|
984 | * @callback_method_impl{FNDISREADBYTES}
|
---|
985 | *
|
---|
986 | * @remarks @a uSrcAddr is the flat address.
|
---|
987 | */
|
---|
988 | static DECLCALLBACK(int) disReadOpcodeBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
|
---|
989 | {
|
---|
990 | RT_NOREF_PV(cbMinRead);
|
---|
991 |
|
---|
992 | RTUINTPTR offBios = pDis->uInstrAddr + offInstr - g_uBiosFlatBase;
|
---|
993 | size_t cbToRead = cbMaxRead;
|
---|
994 | if (offBios + cbToRead > g_cbImg)
|
---|
995 | {
|
---|
996 | if (offBios >= g_cbImg)
|
---|
997 | cbToRead = 0;
|
---|
998 | else
|
---|
999 | cbToRead = g_cbImg - offBios;
|
---|
1000 | }
|
---|
1001 | memcpy(&pDis->abInstr[offInstr], &g_pbImg[offBios], cbToRead);
|
---|
1002 | pDis->cbCachedInstr = (uint8_t)(offInstr + cbToRead);
|
---|
1003 | return VINF_SUCCESS;
|
---|
1004 | }
|
---|
1005 |
|
---|
1006 |
|
---|
1007 | /**
|
---|
1008 | * Disassembles code.
|
---|
1009 | *
|
---|
1010 | * @returns @c true on success, @c false on failure.
|
---|
1011 | * @param uFlatAddr The address where the code starts.
|
---|
1012 | * @param cb The amount of code to disassemble.
|
---|
1013 | * @param fIs16Bit Is is 16-bit (@c true) or 32-bit (@c false).
|
---|
1014 | */
|
---|
1015 | static bool disCode(uint32_t uFlatAddr, uint32_t cb, bool fIs16Bit)
|
---|
1016 | {
|
---|
1017 | uint8_t const *pb = &g_pbImg[uFlatAddr - g_uBiosFlatBase];
|
---|
1018 |
|
---|
1019 | while (cb > 0)
|
---|
1020 | {
|
---|
1021 | /* Trailing zero padding detection. */
|
---|
1022 | if ( *pb == '\0'
|
---|
1023 | && ASMMemIsZero(pb, RT_MIN(cb, 8)))
|
---|
1024 | {
|
---|
1025 | void *pv = ASMMemFirstNonZero(pb, cb);
|
---|
1026 | uint32_t cbZeros = pv ? (uint32_t)((uint8_t const *)pv - pb) : cb;
|
---|
1027 | if (!outputPrintf(" times %#x db 0\n", cbZeros))
|
---|
1028 | return false;
|
---|
1029 | cb -= cbZeros;
|
---|
1030 | pb += cbZeros;
|
---|
1031 | uFlatAddr += cbZeros;
|
---|
1032 | if ( cb == 2
|
---|
1033 | && pb[0] == 'X'
|
---|
1034 | && pb[1] == 'M')
|
---|
1035 | return disStringData(uFlatAddr, cb);
|
---|
1036 | }
|
---|
1037 | /* Work arounds for switch tables and such (disas assertions). */
|
---|
1038 | else if ( 0
|
---|
1039 | || ( pb[0] == 0x50 /* int13_cdemu switch */
|
---|
1040 | && pb[1] == 0x4e
|
---|
1041 | && pb[2] == 0x49
|
---|
1042 | && pb[3] == 0x48
|
---|
1043 | && pb[4] == 0x47
|
---|
1044 | )
|
---|
1045 | || ( pb[0] == 0x8b /* _int13_harddisk_ext switch */
|
---|
1046 | && pb[1] == 0x46
|
---|
1047 | && pb[2] == 0x16
|
---|
1048 | && pb[3] == 0x30
|
---|
1049 | && pb[4] == 0xe8
|
---|
1050 | && pb[5] == 0x80
|
---|
1051 | )
|
---|
1052 | || ( pb[0] == 0xd8
|
---|
1053 | && pb[1] == 0x5f
|
---|
1054 | && pb[2] == 0x0b
|
---|
1055 | && pb[3] == 0x60
|
---|
1056 | && pb[4] == 0x0b
|
---|
1057 | && pb[5] == 0x60
|
---|
1058 | )
|
---|
1059 | || ( pb[0] == 0x67 /* _pci16_function switch */
|
---|
1060 | && pb[1] == 0x92
|
---|
1061 | && pb[2] == 0x81
|
---|
1062 | && pb[3] == 0x92
|
---|
1063 | && pb[4] == 0x94
|
---|
1064 | && pb[5] == 0x92
|
---|
1065 | )
|
---|
1066 | || ( pb[0] == 0xa3 /* _int1a_function switch */
|
---|
1067 | && pb[1] == 0x67
|
---|
1068 | && pb[2] == 0xca
|
---|
1069 | && pb[3] == 0x67
|
---|
1070 | && pb[4] == 0xef
|
---|
1071 | && pb[5] == 0x67
|
---|
1072 | )
|
---|
1073 | || ( pb[0] == 0x0b /* _ahci_init byte table */
|
---|
1074 | && pb[1] == 0x05
|
---|
1075 | && pb[2] == 0x04
|
---|
1076 | && pb[3] == 0x03
|
---|
1077 | && pb[4] == 0x02
|
---|
1078 | && pb[5] == 0x01
|
---|
1079 | )
|
---|
1080 | || ( pb[0] == 0x00 /* bytes after apm_out_str_ */
|
---|
1081 | && pb[1] == 0x00
|
---|
1082 | && pb[2] == 0x00
|
---|
1083 | && pb[3] == 0x00
|
---|
1084 | && pb[4] == 0x00
|
---|
1085 | && pb[5] == 0x00
|
---|
1086 | && pb[6] == 0xe0
|
---|
1087 | && pb[7] == 0xa0
|
---|
1088 | && pb[8] == 0xe2
|
---|
1089 | && pb[9] == 0xa0
|
---|
1090 | )
|
---|
1091 | || ( pb[0] == 0xf0 /* switch for apm_worker */
|
---|
1092 | && pb[1] == 0xa0
|
---|
1093 | && pb[2] == 0xf2
|
---|
1094 | && pb[3] == 0xa0
|
---|
1095 | && pb[4] == 0xf6
|
---|
1096 | && pb[5] == 0xa0
|
---|
1097 | )
|
---|
1098 | || ( pb[0] == 0xd4
|
---|
1099 | && pb[1] == 0xc6
|
---|
1100 | && pb[2] == 0xc5
|
---|
1101 | && pb[3] == 0xba
|
---|
1102 | && pb[4] == 0xb8
|
---|
1103 | && pb[5] == 0xb6
|
---|
1104 | )
|
---|
1105 | || ( pb[0] == 0xec /* _int15_function switch */
|
---|
1106 | && pb[1] == 0xe9
|
---|
1107 | && pb[2] == 0xd8
|
---|
1108 | && pb[3] == 0xc1
|
---|
1109 | && pb[4] == 0xc0
|
---|
1110 | && pb[5] == 0xbf
|
---|
1111 | )
|
---|
1112 | || ( pb[0] == 0x21 /* _int15_function32 switch */
|
---|
1113 | && pb[1] == 0x66
|
---|
1114 | && pb[2] == 0x43
|
---|
1115 | && pb[3] == 0x66
|
---|
1116 | && pb[4] == 0x66
|
---|
1117 | && pb[5] == 0x66
|
---|
1118 | )
|
---|
1119 | || ( pb[0] == 0xf0 /* int15_function_mouse switch */
|
---|
1120 | && pb[1] == 0x75
|
---|
1121 | && pb[2] == 0x66
|
---|
1122 | && pb[3] == 0x76
|
---|
1123 | && pb[4] == 0xe9
|
---|
1124 | && pb[5] == 0x76
|
---|
1125 | )
|
---|
1126 | || ( pb[0] == 0x60
|
---|
1127 | && pb[1] == 0xa0
|
---|
1128 | && pb[2] == 0x62
|
---|
1129 | && pb[3] == 0xa0
|
---|
1130 | && pb[4] == 0x66
|
---|
1131 | && pb[5] == 0xa0
|
---|
1132 | )
|
---|
1133 | || 0
|
---|
1134 | )
|
---|
1135 | return disByteData(uFlatAddr, cb);
|
---|
1136 | else
|
---|
1137 | {
|
---|
1138 | unsigned cbInstr;
|
---|
1139 | DISCPUSTATE CpuState;
|
---|
1140 | CpuState.ModRM.Bits.Mod = 3;
|
---|
1141 | int rc = DISInstrWithReader(uFlatAddr, fIs16Bit ? DISCPUMODE_16BIT : DISCPUMODE_32BIT,
|
---|
1142 | disReadOpcodeBytes, NULL, &CpuState, &cbInstr);
|
---|
1143 | if ( RT_SUCCESS(rc)
|
---|
1144 | && cbInstr <= cb
|
---|
1145 | && CpuState.pCurInstr
|
---|
1146 | && CpuState.pCurInstr->uOpcode != OP_INVALID
|
---|
1147 | && CpuState.pCurInstr->uOpcode != OP_ILLUD2
|
---|
1148 | && ( !(CpuState.fPrefix & DISPREFIX_ADDRSIZE)
|
---|
1149 | || disAccessesMemory(&CpuState)))
|
---|
1150 | {
|
---|
1151 | char szTmp[4096];
|
---|
1152 | size_t cch = DISFormatYasmEx(&CpuState, szTmp, sizeof(szTmp),
|
---|
1153 | DIS_FMT_FLAGS_STRICT
|
---|
1154 | | DIS_FMT_FLAGS_BYTES_RIGHT | DIS_FMT_FLAGS_BYTES_COMMENT | DIS_FMT_FLAGS_BYTES_SPACED,
|
---|
1155 | NULL, NULL);
|
---|
1156 | cch = disHandleYasmDifferences(&CpuState, uFlatAddr, cbInstr, szTmp, sizeof(szTmp), cch);
|
---|
1157 | Assert(cch < sizeof(szTmp));
|
---|
1158 |
|
---|
1159 | if (g_cVerbose > 1)
|
---|
1160 | {
|
---|
1161 | while (cch < 72)
|
---|
1162 | szTmp[cch++] = ' ';
|
---|
1163 |
|
---|
1164 | RTDBGLINE LineInfo = {0};
|
---|
1165 | RTINTPTR offLine = -1;
|
---|
1166 | int rcLine = RTDbgModLineByAddr(g_hSymMod, RTDBGSEGIDX_RVA, uFlatAddr - g_uBiosFlatBase, &offLine, &LineInfo);
|
---|
1167 | if (RT_SUCCESS(rcLine) && offLine == 0 && cch < sizeof(szTmp) - 16)
|
---|
1168 | RTStrPrintf(&szTmp[cch], sizeof(szTmp) - cch, "; %#x %Rbn:%u",
|
---|
1169 | uFlatAddr, LineInfo.szFilename, LineInfo.uLineNo);
|
---|
1170 | else
|
---|
1171 | RTStrPrintf(&szTmp[cch], sizeof(szTmp) - cch, "; %#x", uFlatAddr);
|
---|
1172 | }
|
---|
1173 |
|
---|
1174 | if (!outputPrintf(" %s\n", szTmp))
|
---|
1175 | return false;
|
---|
1176 | cb -= cbInstr;
|
---|
1177 | pb += cbInstr;
|
---|
1178 | uFlatAddr += cbInstr;
|
---|
1179 | }
|
---|
1180 | else
|
---|
1181 | {
|
---|
1182 | if (!disByteData(uFlatAddr, 1))
|
---|
1183 | return false;
|
---|
1184 | cb--;
|
---|
1185 | pb++;
|
---|
1186 | uFlatAddr++;
|
---|
1187 | }
|
---|
1188 | }
|
---|
1189 | }
|
---|
1190 | return true;
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 |
|
---|
1194 | static bool disCodeSegment(uint32_t iSeg)
|
---|
1195 | {
|
---|
1196 | uint32_t uFlatAddr = g_aSegs[iSeg].uFlatAddr;
|
---|
1197 | uint32_t cb = g_aSegs[iSeg].cb;
|
---|
1198 |
|
---|
1199 | while (cb > 0)
|
---|
1200 | {
|
---|
1201 | uint32_t off;
|
---|
1202 | RTDBGSYMBOL Sym;
|
---|
1203 | disGetNextSymbol(uFlatAddr, cb, &off, &Sym);
|
---|
1204 |
|
---|
1205 | if (off > 0)
|
---|
1206 | {
|
---|
1207 | if (!disByteData(uFlatAddr, off))
|
---|
1208 | return false;
|
---|
1209 | cb -= off;
|
---|
1210 | uFlatAddr += off;
|
---|
1211 | off = 0;
|
---|
1212 | if (!cb)
|
---|
1213 | break;
|
---|
1214 | }
|
---|
1215 |
|
---|
1216 | bool fRc;
|
---|
1217 | if (off == 0)
|
---|
1218 | {
|
---|
1219 | size_t cchName = strlen(Sym.szName);
|
---|
1220 | fRc = outputPrintf("%s: %*s; %#x LB %#x\n", Sym.szName, cchName < 41 - 2 ? cchName - 41 - 2 : 0, "", uFlatAddr, Sym.cb);
|
---|
1221 | if (!fRc)
|
---|
1222 | return false;
|
---|
1223 |
|
---|
1224 | if (disIsCodeAndAdjustSize(uFlatAddr, &Sym, &g_aSegs[iSeg]))
|
---|
1225 | fRc = disCode(uFlatAddr, Sym.cb, disIs16BitCode(Sym.szName));
|
---|
1226 | else
|
---|
1227 | fRc = disByteData(uFlatAddr, Sym.cb);
|
---|
1228 |
|
---|
1229 | uFlatAddr += Sym.cb;
|
---|
1230 | cb -= Sym.cb;
|
---|
1231 | }
|
---|
1232 | else
|
---|
1233 | {
|
---|
1234 | fRc = disByteData(uFlatAddr, cb);
|
---|
1235 | uFlatAddr += cb;
|
---|
1236 | cb = 0;
|
---|
1237 | }
|
---|
1238 | if (!fRc)
|
---|
1239 | return false;
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 | return true;
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 |
|
---|
1246 | static RTEXITCODE DisassembleBiosImage(void)
|
---|
1247 | {
|
---|
1248 | if (!disFileHeader())
|
---|
1249 | return RTEXITCODE_FAILURE;
|
---|
1250 |
|
---|
1251 | /*
|
---|
1252 | * Work the image segment by segment.
|
---|
1253 | */
|
---|
1254 | bool fRc = true;
|
---|
1255 | uint32_t uFlatAddr = g_uBiosFlatBase;
|
---|
1256 | for (uint32_t iSeg = 0; iSeg < g_cSegs && fRc; iSeg++)
|
---|
1257 | {
|
---|
1258 | /* Is there a gap between the segments? */
|
---|
1259 | if (uFlatAddr < g_aSegs[iSeg].uFlatAddr)
|
---|
1260 | {
|
---|
1261 | fRc = disCopySegmentGap(uFlatAddr, g_aSegs[iSeg].uFlatAddr - uFlatAddr);
|
---|
1262 | if (!fRc)
|
---|
1263 | break;
|
---|
1264 | uFlatAddr = g_aSegs[iSeg].uFlatAddr;
|
---|
1265 | }
|
---|
1266 | else if (uFlatAddr > g_aSegs[iSeg].uFlatAddr)
|
---|
1267 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Overlapping segments: %u and %u; uFlatAddr=%#x\n", iSeg - 1, iSeg, uFlatAddr);
|
---|
1268 |
|
---|
1269 | /* Disassemble the segment. */
|
---|
1270 | fRc = outputPrintf("\n"
|
---|
1271 | "section %s progbits vstart=%#x align=1 ; size=%#x class=%s group=%s\n",
|
---|
1272 | g_aSegs[iSeg].szName, g_aSegs[iSeg].uFlatAddr - g_uBiosFlatBase,
|
---|
1273 | g_aSegs[iSeg].cb, g_aSegs[iSeg].szClass, g_aSegs[iSeg].szGroup);
|
---|
1274 | if (!fRc)
|
---|
1275 | return RTEXITCODE_FAILURE;
|
---|
1276 | if (!strcmp(g_aSegs[iSeg].szName, "CONST"))
|
---|
1277 | fRc = disConstSegment(iSeg);
|
---|
1278 | else if (!strcmp(g_aSegs[iSeg].szClass, "DATA"))
|
---|
1279 | fRc = disDataSegment(iSeg);
|
---|
1280 | else
|
---|
1281 | fRc = disCodeSegment(iSeg);
|
---|
1282 |
|
---|
1283 | /* Advance. */
|
---|
1284 | uFlatAddr += g_aSegs[iSeg].cb;
|
---|
1285 | }
|
---|
1286 |
|
---|
1287 | /* Final gap. */
|
---|
1288 | if (uFlatAddr < g_uBiosFlatBase + g_cbImg)
|
---|
1289 | fRc = disCopySegmentGap(uFlatAddr, (uint32_t)(g_uBiosFlatBase + g_cbImg - uFlatAddr));
|
---|
1290 | else if (uFlatAddr > g_uBiosFlatBase + g_cbImg)
|
---|
1291 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Last segment spills beyond 1MB; uFlatAddr=%#x\n", uFlatAddr);
|
---|
1292 |
|
---|
1293 | if (!fRc)
|
---|
1294 | return RTEXITCODE_FAILURE;
|
---|
1295 | return RTEXITCODE_SUCCESS;
|
---|
1296 | }
|
---|
1297 |
|
---|
1298 |
|
---|
1299 |
|
---|
1300 | /**
|
---|
1301 | * Parses the symbol file for the BIOS.
|
---|
1302 | *
|
---|
1303 | * This is in ELF/DWARF format.
|
---|
1304 | *
|
---|
1305 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1306 | * @param pszBiosSym Path to the sym file.
|
---|
1307 | */
|
---|
1308 | static RTEXITCODE ParseSymFile(const char *pszBiosSym)
|
---|
1309 | {
|
---|
1310 | int rc = RTDbgModCreateFromImage(&g_hSymMod, pszBiosSym, "VBoxBios", RTLDRARCH_WHATEVER, NIL_RTDBGCFG);
|
---|
1311 | if (RT_FAILURE(rc))
|
---|
1312 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosSym, rc);
|
---|
1313 |
|
---|
1314 | if (g_cVerbose > 0)
|
---|
1315 | {
|
---|
1316 | /* Show segments */
|
---|
1317 | RTDBGSEGIDX cSegs = RTDbgModSegmentCount(g_hSymMod);
|
---|
1318 | for (RTDBGSEGIDX iSeg = 0; iSeg < cSegs; iSeg++)
|
---|
1319 | {
|
---|
1320 | RTDBGSEGMENT SegInfo;
|
---|
1321 | rc = RTDbgModSegmentByIndex(g_hSymMod, iSeg, &SegInfo);
|
---|
1322 | if (RT_SUCCESS(rc))
|
---|
1323 | RTMsgInfo("Seg#%u: %05RX64 LB %04RX64 rva %04RX64 %s\n", iSeg, SegInfo.Address, SegInfo.cb, SegInfo.uRva, SegInfo.szName);
|
---|
1324 | else
|
---|
1325 | RTMsgInfo("Seg#%u: RTDbgModSegmentByIndex -> %Rrc\n", iSeg, rc);
|
---|
1326 |
|
---|
1327 | }
|
---|
1328 | }
|
---|
1329 | return RTEXITCODE_SUCCESS;
|
---|
1330 | }
|
---|
1331 |
|
---|
1332 |
|
---|
1333 | /**
|
---|
1334 | * Display an error with the mapfile name and current line, return false.
|
---|
1335 | *
|
---|
1336 | * @returns @c false.
|
---|
1337 | * @param pMap The map file handle.
|
---|
1338 | * @param pszFormat The format string.
|
---|
1339 | * @param ... Format arguments.
|
---|
1340 | */
|
---|
1341 | static bool mapError(PBIOSMAP pMap, const char *pszFormat, ...)
|
---|
1342 | {
|
---|
1343 | va_list va;
|
---|
1344 | va_start(va, pszFormat);
|
---|
1345 | RTMsgError("%s:%d: %N", pMap->pszMapFile, pMap->iLine, pszFormat, &va);
|
---|
1346 | va_end(va);
|
---|
1347 | return false;
|
---|
1348 | }
|
---|
1349 |
|
---|
1350 |
|
---|
1351 | /**
|
---|
1352 | * Reads a line from the file.
|
---|
1353 | *
|
---|
1354 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1355 | * @param pMap The map file handle.
|
---|
1356 | */
|
---|
1357 | static bool mapReadLine(PBIOSMAP pMap)
|
---|
1358 | {
|
---|
1359 | int rc = RTStrmGetLine(pMap->hStrm, pMap->szLine, sizeof(pMap->szLine));
|
---|
1360 | if (RT_FAILURE(rc))
|
---|
1361 | {
|
---|
1362 | if (rc == VERR_EOF)
|
---|
1363 | {
|
---|
1364 | pMap->fEof = true;
|
---|
1365 | pMap->cch = 0;
|
---|
1366 | pMap->offNW = 0;
|
---|
1367 | pMap->szLine[0] = '\0';
|
---|
1368 | }
|
---|
1369 | else
|
---|
1370 | RTMsgError("%s:%d: Read error %Rrc", pMap->pszMapFile, pMap->iLine + 1, rc);
|
---|
1371 | return false;
|
---|
1372 | }
|
---|
1373 | pMap->iLine++;
|
---|
1374 | pMap->cch = (uint32_t)strlen(pMap->szLine);
|
---|
1375 |
|
---|
1376 | /* Check out leading white space. */
|
---|
1377 | if (!RT_C_IS_SPACE(pMap->szLine[0]))
|
---|
1378 | pMap->offNW = 0;
|
---|
1379 | else
|
---|
1380 | {
|
---|
1381 | uint32_t off = 1;
|
---|
1382 | while (RT_C_IS_SPACE(pMap->szLine[off]))
|
---|
1383 | off++;
|
---|
1384 | pMap->offNW = off;
|
---|
1385 | }
|
---|
1386 |
|
---|
1387 | return true;
|
---|
1388 | }
|
---|
1389 |
|
---|
1390 |
|
---|
1391 | /**
|
---|
1392 | * Checks if it is an empty line.
|
---|
1393 | * @returns @c true if empty, @c false if not.
|
---|
1394 | * @param pMap The map file handle.
|
---|
1395 | */
|
---|
1396 | static bool mapIsEmptyLine(PBIOSMAP pMap)
|
---|
1397 | {
|
---|
1398 | Assert(pMap->offNW <= pMap->cch);
|
---|
1399 | return pMap->offNW == pMap->cch;
|
---|
1400 | }
|
---|
1401 |
|
---|
1402 |
|
---|
1403 | /**
|
---|
1404 | * Reads ahead in the map file until a non-empty line or EOF is encountered.
|
---|
1405 | *
|
---|
1406 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1407 | * @param pMap The map file handle.
|
---|
1408 | */
|
---|
1409 | static bool mapSkipEmptyLines(PBIOSMAP pMap)
|
---|
1410 | {
|
---|
1411 | for (;;)
|
---|
1412 | {
|
---|
1413 | if (!mapReadLine(pMap))
|
---|
1414 | return false;
|
---|
1415 | if (pMap->offNW < pMap->cch)
|
---|
1416 | return true;
|
---|
1417 | }
|
---|
1418 | }
|
---|
1419 |
|
---|
1420 |
|
---|
1421 | /**
|
---|
1422 | * Reads ahead in the map file until an empty line or EOF is encountered.
|
---|
1423 | *
|
---|
1424 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1425 | * @param pMap The map file handle.
|
---|
1426 | */
|
---|
1427 | static bool mapSkipNonEmptyLines(PBIOSMAP pMap)
|
---|
1428 | {
|
---|
1429 | for (;;)
|
---|
1430 | {
|
---|
1431 | if (!mapReadLine(pMap))
|
---|
1432 | return false;
|
---|
1433 | if (pMap->offNW == pMap->cch)
|
---|
1434 | return true;
|
---|
1435 | }
|
---|
1436 | }
|
---|
1437 |
|
---|
1438 |
|
---|
1439 | /**
|
---|
1440 | * Strips the current line.
|
---|
1441 | *
|
---|
1442 | * The string length may change.
|
---|
1443 | *
|
---|
1444 | * @returns Pointer to the first non-space character.
|
---|
1445 | * @param pMap The map file handle.
|
---|
1446 | * @param pcch Where to return the length of the unstripped
|
---|
1447 | * part. Optional.
|
---|
1448 | */
|
---|
1449 | static char *mapStripCurrentLine(PBIOSMAP pMap, size_t *pcch)
|
---|
1450 | {
|
---|
1451 | char *psz = &pMap->szLine[pMap->offNW];
|
---|
1452 | char *pszEnd = &pMap->szLine[pMap->cch];
|
---|
1453 | while ( (uintptr_t)pszEnd > (uintptr_t)psz
|
---|
1454 | && RT_C_IS_SPACE(pszEnd[-1]))
|
---|
1455 | {
|
---|
1456 | *--pszEnd = '\0';
|
---|
1457 | pMap->cch--;
|
---|
1458 | }
|
---|
1459 | if (pcch)
|
---|
1460 | *pcch = pszEnd - psz;
|
---|
1461 | return psz;
|
---|
1462 | }
|
---|
1463 |
|
---|
1464 |
|
---|
1465 | /**
|
---|
1466 | * Reads a line from the file and right strips it.
|
---|
1467 | *
|
---|
1468 | * @returns Pointer to szLine on success, @c NULL + msg on failure, @c NULL on
|
---|
1469 | * EOF.
|
---|
1470 | * @param pMap The map file handle.
|
---|
1471 | * @param pcch Where to return the length of the unstripped
|
---|
1472 | * part. Optional.
|
---|
1473 | */
|
---|
1474 | static char *mapReadLineStripRight(PBIOSMAP pMap, size_t *pcch)
|
---|
1475 | {
|
---|
1476 | if (!mapReadLine(pMap))
|
---|
1477 | return NULL;
|
---|
1478 | mapStripCurrentLine(pMap, NULL);
|
---|
1479 | if (pcch)
|
---|
1480 | *pcch = pMap->cch;
|
---|
1481 | return pMap->szLine;
|
---|
1482 | }
|
---|
1483 |
|
---|
1484 |
|
---|
1485 | /**
|
---|
1486 | * mapReadLine() + mapStripCurrentLine().
|
---|
1487 | *
|
---|
1488 | * @returns Pointer to the first non-space character in the new line. NULL on
|
---|
1489 | * read error (bitched already) or end of file.
|
---|
1490 | * @param pMap The map file handle.
|
---|
1491 | * @param pcch Where to return the length of the unstripped
|
---|
1492 | * part. Optional.
|
---|
1493 | */
|
---|
1494 | static char *mapReadLineStrip(PBIOSMAP pMap, size_t *pcch)
|
---|
1495 | {
|
---|
1496 | if (!mapReadLine(pMap))
|
---|
1497 | return NULL;
|
---|
1498 | return mapStripCurrentLine(pMap, pcch);
|
---|
1499 | }
|
---|
1500 |
|
---|
1501 |
|
---|
1502 | /**
|
---|
1503 | * Parses a word, copying it into the supplied buffer, and skipping any spaces
|
---|
1504 | * following it.
|
---|
1505 | *
|
---|
1506 | * @returns @c true on success, @c false on failure.
|
---|
1507 | * @param ppszCursor Pointer to the cursor variable.
|
---|
1508 | * @param pszBuf The output buffer.
|
---|
1509 | * @param cbBuf The size of the output buffer.
|
---|
1510 | */
|
---|
1511 | static bool mapParseWord(char **ppszCursor, char *pszBuf, size_t cbBuf)
|
---|
1512 | {
|
---|
1513 | /* Check that we start on a non-blank. */
|
---|
1514 | char *pszStart = *ppszCursor;
|
---|
1515 | if (!*pszStart || RT_C_IS_SPACE(*pszStart))
|
---|
1516 | return false;
|
---|
1517 |
|
---|
1518 | /* Find the end of the word. */
|
---|
1519 | char *psz = pszStart + 1;
|
---|
1520 | while (*psz && !RT_C_IS_SPACE(*psz))
|
---|
1521 | psz++;
|
---|
1522 |
|
---|
1523 | /* Copy it. */
|
---|
1524 | size_t cchWord = (uintptr_t)psz - (uintptr_t)pszStart;
|
---|
1525 | if (cchWord >= cbBuf)
|
---|
1526 | return false;
|
---|
1527 | memcpy(pszBuf, pszStart, cchWord);
|
---|
1528 | pszBuf[cchWord] = '\0';
|
---|
1529 |
|
---|
1530 | /* Skip blanks following it. */
|
---|
1531 | while (RT_C_IS_SPACE(*psz))
|
---|
1532 | psz++;
|
---|
1533 | *ppszCursor = psz;
|
---|
1534 | return true;
|
---|
1535 | }
|
---|
1536 |
|
---|
1537 |
|
---|
1538 | /**
|
---|
1539 | * Parses an 16:16 address.
|
---|
1540 | *
|
---|
1541 | * @returns @c true on success, @c false on failure.
|
---|
1542 | * @param ppszCursor Pointer to the cursor variable.
|
---|
1543 | * @param pAddr Where to return the address.
|
---|
1544 | */
|
---|
1545 | static bool mapParseAddress(char **ppszCursor, PRTFAR16 pAddr)
|
---|
1546 | {
|
---|
1547 | char szWord[32];
|
---|
1548 | if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
|
---|
1549 | return false;
|
---|
1550 | size_t cchWord = strlen(szWord);
|
---|
1551 |
|
---|
1552 | /* An address is at least 16:16 format. It may be 16:32. It may also be flagged. */
|
---|
1553 | size_t cchAddr = 4 + 1 + 4;
|
---|
1554 | if (cchWord < cchAddr)
|
---|
1555 | return false;
|
---|
1556 | if ( !RT_C_IS_XDIGIT(szWord[0])
|
---|
1557 | || !RT_C_IS_XDIGIT(szWord[1])
|
---|
1558 | || !RT_C_IS_XDIGIT(szWord[2])
|
---|
1559 | || !RT_C_IS_XDIGIT(szWord[3])
|
---|
1560 | || szWord[4] != ':'
|
---|
1561 | || !RT_C_IS_XDIGIT(szWord[5])
|
---|
1562 | || !RT_C_IS_XDIGIT(szWord[6])
|
---|
1563 | || !RT_C_IS_XDIGIT(szWord[7])
|
---|
1564 | || !RT_C_IS_XDIGIT(szWord[8])
|
---|
1565 | )
|
---|
1566 | return false;
|
---|
1567 | if ( cchWord > cchAddr
|
---|
1568 | && RT_C_IS_XDIGIT(szWord[9])
|
---|
1569 | && RT_C_IS_XDIGIT(szWord[10])
|
---|
1570 | && RT_C_IS_XDIGIT(szWord[11])
|
---|
1571 | && RT_C_IS_XDIGIT(szWord[12]))
|
---|
1572 | cchAddr += 4;
|
---|
1573 |
|
---|
1574 | /* Drop flag if present. */
|
---|
1575 | if (cchWord > cchAddr)
|
---|
1576 | {
|
---|
1577 | if (RT_C_IS_XDIGIT(szWord[cchAddr]))
|
---|
1578 | return false;
|
---|
1579 | szWord[cchAddr] = '\0';
|
---|
1580 | cchWord = cchAddr;
|
---|
1581 | }
|
---|
1582 |
|
---|
1583 | /* Convert it. */
|
---|
1584 | szWord[4] = '\0';
|
---|
1585 | int rc1 = RTStrToUInt16Full(szWord, 16, &pAddr->sel);
|
---|
1586 | if (rc1 != VINF_SUCCESS)
|
---|
1587 | return false;
|
---|
1588 |
|
---|
1589 | int rc2 = RTStrToUInt16Full(szWord + 5, 16, &pAddr->off);
|
---|
1590 | if (rc2 != VINF_SUCCESS)
|
---|
1591 | return false;
|
---|
1592 | return true;
|
---|
1593 | }
|
---|
1594 |
|
---|
1595 |
|
---|
1596 | /**
|
---|
1597 | * Parses a size.
|
---|
1598 | *
|
---|
1599 | * @returns @c true on success, @c false on failure.
|
---|
1600 | * @param ppszCursor Pointer to the cursor variable.
|
---|
1601 | * @param pcb Where to return the size.
|
---|
1602 | */
|
---|
1603 | static bool mapParseSize(char **ppszCursor, uint32_t *pcb)
|
---|
1604 | {
|
---|
1605 | char szWord[32];
|
---|
1606 | if (!mapParseWord(ppszCursor, szWord, sizeof(szWord)))
|
---|
1607 | return false;
|
---|
1608 | size_t cchWord = strlen(szWord);
|
---|
1609 | if (cchWord != 8)
|
---|
1610 | return false;
|
---|
1611 |
|
---|
1612 | int rc = RTStrToUInt32Full(szWord, 16, pcb);
|
---|
1613 | if (rc != VINF_SUCCESS)
|
---|
1614 | return false;
|
---|
1615 | return true;
|
---|
1616 | }
|
---|
1617 |
|
---|
1618 |
|
---|
1619 | /**
|
---|
1620 | * Parses a section box and the following column header.
|
---|
1621 | *
|
---|
1622 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1623 | * @param pMap Map file handle.
|
---|
1624 | * @param pszSectionNm The expected section name.
|
---|
1625 | * @param cColumns The number of columns.
|
---|
1626 | * @param ... The column names.
|
---|
1627 | */
|
---|
1628 | static bool mapSkipThruColumnHeadings(PBIOSMAP pMap, const char *pszSectionNm, uint32_t cColumns, ...)
|
---|
1629 | {
|
---|
1630 | if ( mapIsEmptyLine(pMap)
|
---|
1631 | && !mapSkipEmptyLines(pMap))
|
---|
1632 | return false;
|
---|
1633 |
|
---|
1634 | /* +------------+ */
|
---|
1635 | size_t cch;
|
---|
1636 | char *psz = mapStripCurrentLine(pMap, &cch);
|
---|
1637 | if (!psz)
|
---|
1638 | return false;
|
---|
1639 |
|
---|
1640 | if ( psz[0] != '+'
|
---|
1641 | || psz[1] != '-'
|
---|
1642 | || psz[2] != '-'
|
---|
1643 | || psz[3] != '-'
|
---|
1644 | || psz[cch - 4] != '-'
|
---|
1645 | || psz[cch - 3] != '-'
|
---|
1646 | || psz[cch - 2] != '-'
|
---|
1647 | || psz[cch - 1] != '+'
|
---|
1648 | )
|
---|
1649 | {
|
---|
1650 | RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
|
---|
1651 | return false;
|
---|
1652 | }
|
---|
1653 |
|
---|
1654 | /* | pszSectionNm | */
|
---|
1655 | psz = mapReadLineStrip(pMap, &cch);
|
---|
1656 | if (!psz)
|
---|
1657 | return false;
|
---|
1658 |
|
---|
1659 | size_t cchSectionNm = strlen(pszSectionNm);
|
---|
1660 | if ( psz[0] != '|'
|
---|
1661 | || psz[1] != ' '
|
---|
1662 | || psz[2] != ' '
|
---|
1663 | || psz[3] != ' '
|
---|
1664 | || psz[cch - 4] != ' '
|
---|
1665 | || psz[cch - 3] != ' '
|
---|
1666 | || psz[cch - 2] != ' '
|
---|
1667 | || psz[cch - 1] != '|'
|
---|
1668 | || cch != 1 + 3 + cchSectionNm + 3 + 1
|
---|
1669 | || strncmp(&psz[4], pszSectionNm, cchSectionNm)
|
---|
1670 | )
|
---|
1671 | {
|
---|
1672 | RTMsgError("%s:%d: Expected section box: | %s |", pMap->pszMapFile, pMap->iLine, pszSectionNm);
|
---|
1673 | return false;
|
---|
1674 | }
|
---|
1675 |
|
---|
1676 | /* +------------+ */
|
---|
1677 | psz = mapReadLineStrip(pMap, &cch);
|
---|
1678 | if (!psz)
|
---|
1679 | return false;
|
---|
1680 | if ( psz[0] != '+'
|
---|
1681 | || psz[1] != '-'
|
---|
1682 | || psz[2] != '-'
|
---|
1683 | || psz[3] != '-'
|
---|
1684 | || psz[cch - 4] != '-'
|
---|
1685 | || psz[cch - 3] != '-'
|
---|
1686 | || psz[cch - 2] != '-'
|
---|
1687 | || psz[cch - 1] != '+'
|
---|
1688 | )
|
---|
1689 | {
|
---|
1690 | RTMsgError("%s:%d: Expected section box: +-----...", pMap->pszMapFile, pMap->iLine);
|
---|
1691 | return false;
|
---|
1692 | }
|
---|
1693 |
|
---|
1694 | /* There may be a few lines describing the table notation now, surrounded by blank lines. */
|
---|
1695 | do
|
---|
1696 | {
|
---|
1697 | psz = mapReadLineStripRight(pMap, &cch);
|
---|
1698 | if (!psz)
|
---|
1699 | return false;
|
---|
1700 | } while ( *psz == '\0'
|
---|
1701 | || ( !RT_C_IS_SPACE(psz[0])
|
---|
1702 | && RT_C_IS_SPACE(psz[1])
|
---|
1703 | && psz[2] == '='
|
---|
1704 | && RT_C_IS_SPACE(psz[3]))
|
---|
1705 | );
|
---|
1706 |
|
---|
1707 | /* Should have the column heading now. */
|
---|
1708 | va_list va;
|
---|
1709 | va_start(va, cColumns);
|
---|
1710 | for (uint32_t i = 0; i < cColumns; i++)
|
---|
1711 | {
|
---|
1712 | const char *pszColumn = va_arg(va, const char *);
|
---|
1713 | size_t cchColumn = strlen(pszColumn);
|
---|
1714 | if ( strncmp(psz, pszColumn, cchColumn)
|
---|
1715 | || ( psz[cchColumn] != '\0'
|
---|
1716 | && !RT_C_IS_SPACE(psz[cchColumn])))
|
---|
1717 | {
|
---|
1718 | va_end(va);
|
---|
1719 | RTMsgError("%s:%d: Expected column '%s' found '%s'", pMap->pszMapFile, pMap->iLine, pszColumn, psz);
|
---|
1720 | return false;
|
---|
1721 | }
|
---|
1722 | psz += cchColumn;
|
---|
1723 | while (RT_C_IS_SPACE(*psz))
|
---|
1724 | psz++;
|
---|
1725 | }
|
---|
1726 | va_end(va);
|
---|
1727 |
|
---|
1728 | /* The next line is the underlining. */
|
---|
1729 | psz = mapReadLineStripRight(pMap, &cch);
|
---|
1730 | if (!psz)
|
---|
1731 | return false;
|
---|
1732 | if (*psz != '=' || psz[cch - 1] != '=')
|
---|
1733 | {
|
---|
1734 | RTMsgError("%s:%d: Expected column header underlining", pMap->pszMapFile, pMap->iLine);
|
---|
1735 | return false;
|
---|
1736 | }
|
---|
1737 |
|
---|
1738 | /* Skip one blank line. */
|
---|
1739 | psz = mapReadLineStripRight(pMap, &cch);
|
---|
1740 | if (!psz)
|
---|
1741 | return false;
|
---|
1742 | if (*psz)
|
---|
1743 | {
|
---|
1744 | RTMsgError("%s:%d: Expected blank line beneath the column headers", pMap->pszMapFile, pMap->iLine);
|
---|
1745 | return false;
|
---|
1746 | }
|
---|
1747 |
|
---|
1748 | return true;
|
---|
1749 | }
|
---|
1750 |
|
---|
1751 |
|
---|
1752 | /**
|
---|
1753 | * Parses a segment list.
|
---|
1754 | *
|
---|
1755 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1756 | * @param pMap The map file handle.
|
---|
1757 | */
|
---|
1758 | static bool mapParseSegments(PBIOSMAP pMap)
|
---|
1759 | {
|
---|
1760 | for (;;)
|
---|
1761 | {
|
---|
1762 | if (!mapReadLineStripRight(pMap, NULL))
|
---|
1763 | return false;
|
---|
1764 |
|
---|
1765 | /* The end? The line should be empty. Expectes segment name to not
|
---|
1766 | start with a space. */
|
---|
1767 | if (!pMap->szLine[0] || RT_C_IS_SPACE(pMap->szLine[0]))
|
---|
1768 | {
|
---|
1769 | if (!pMap->szLine[0])
|
---|
1770 | return true;
|
---|
1771 | RTMsgError("%s:%u: Malformed segment line", pMap->pszMapFile, pMap->iLine);
|
---|
1772 | return false;
|
---|
1773 | }
|
---|
1774 |
|
---|
1775 | /* Parse the segment line. */
|
---|
1776 | uint32_t iSeg = g_cSegs;
|
---|
1777 | if (iSeg >= RT_ELEMENTS(g_aSegs))
|
---|
1778 | {
|
---|
1779 | RTMsgError("%s:%u: Too many segments", pMap->pszMapFile, pMap->iLine);
|
---|
1780 | return false;
|
---|
1781 | }
|
---|
1782 |
|
---|
1783 | char *psz = pMap->szLine;
|
---|
1784 | if (!mapParseWord(&psz, g_aSegs[iSeg].szName, sizeof(g_aSegs[iSeg].szName)))
|
---|
1785 | RTMsgError("%s:%u: Segment name parser error", pMap->pszMapFile, pMap->iLine);
|
---|
1786 | else if (!mapParseWord(&psz, g_aSegs[iSeg].szClass, sizeof(g_aSegs[iSeg].szClass)))
|
---|
1787 | RTMsgError("%s:%u: Segment class parser error", pMap->pszMapFile, pMap->iLine);
|
---|
1788 | else if (!mapParseWord(&psz, g_aSegs[iSeg].szGroup, sizeof(g_aSegs[iSeg].szGroup)))
|
---|
1789 | RTMsgError("%s:%u: Segment group parser error", pMap->pszMapFile, pMap->iLine);
|
---|
1790 | else if (!mapParseAddress(&psz, &g_aSegs[iSeg].Address))
|
---|
1791 | RTMsgError("%s:%u: Segment address parser error", pMap->pszMapFile, pMap->iLine);
|
---|
1792 | else if (!mapParseSize(&psz, &g_aSegs[iSeg].cb))
|
---|
1793 | RTMsgError("%s:%u: Segment size parser error", pMap->pszMapFile, pMap->iLine);
|
---|
1794 | else
|
---|
1795 | {
|
---|
1796 | g_aSegs[iSeg].uFlatAddr = ((uint32_t)g_aSegs[iSeg].Address.sel << 4) + g_aSegs[iSeg].Address.off;
|
---|
1797 | g_cSegs++;
|
---|
1798 | if (g_cVerbose > 2)
|
---|
1799 | RTStrmPrintf(g_pStdErr, "read segment at %08x / %04x:%04x LB %04x %s / %s / %s\n",
|
---|
1800 | g_aSegs[iSeg].uFlatAddr,
|
---|
1801 | g_aSegs[iSeg].Address.sel,
|
---|
1802 | g_aSegs[iSeg].Address.off,
|
---|
1803 | g_aSegs[iSeg].cb,
|
---|
1804 | g_aSegs[iSeg].szName,
|
---|
1805 | g_aSegs[iSeg].szClass,
|
---|
1806 | g_aSegs[iSeg].szGroup);
|
---|
1807 |
|
---|
1808 | while (RT_C_IS_SPACE(*psz))
|
---|
1809 | psz++;
|
---|
1810 | if (!*psz)
|
---|
1811 | continue;
|
---|
1812 | RTMsgError("%s:%u: Junk at end of line", pMap->pszMapFile, pMap->iLine);
|
---|
1813 | }
|
---|
1814 | return false;
|
---|
1815 | }
|
---|
1816 | }
|
---|
1817 |
|
---|
1818 |
|
---|
1819 | /**
|
---|
1820 | * Sorts the segment array by flat address and adds them to the debug module.
|
---|
1821 | *
|
---|
1822 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1823 | */
|
---|
1824 | static bool mapSortAndAddSegments(void)
|
---|
1825 | {
|
---|
1826 | for (uint32_t i = 0; i < g_cSegs; i++)
|
---|
1827 | {
|
---|
1828 | for (uint32_t j = i + 1; j < g_cSegs; j++)
|
---|
1829 | if (g_aSegs[j].uFlatAddr < g_aSegs[i].uFlatAddr)
|
---|
1830 | {
|
---|
1831 | BIOSSEG Tmp = g_aSegs[i];
|
---|
1832 | g_aSegs[i] = g_aSegs[j];
|
---|
1833 | g_aSegs[j] = Tmp;
|
---|
1834 | }
|
---|
1835 | g_aSegs[i].uRva = g_aSegs[i].uFlatAddr - g_aSegs[0].uFlatAddr;
|
---|
1836 |
|
---|
1837 | if (g_cVerbose > 0)
|
---|
1838 | RTStrmPrintf(g_pStdErr, "segment at %08x / %04x / %04x:%04x LB %04x %s / %s / %s\n",
|
---|
1839 | g_aSegs[i].uFlatAddr,
|
---|
1840 | g_aSegs[i].uRva,
|
---|
1841 | g_aSegs[i].Address.sel,
|
---|
1842 | g_aSegs[i].Address.off,
|
---|
1843 | g_aSegs[i].cb,
|
---|
1844 | g_aSegs[i].szName,
|
---|
1845 | g_aSegs[i].szClass,
|
---|
1846 | g_aSegs[i].szGroup);
|
---|
1847 |
|
---|
1848 | RTDBGSEGIDX idx = i;
|
---|
1849 | int rc = RTDbgModSegmentAdd(g_hMapMod, g_aSegs[i].uFlatAddr, g_aSegs[i].cb, g_aSegs[i].szName, 0 /*fFlags*/, &idx);
|
---|
1850 | if (RT_FAILURE(rc))
|
---|
1851 | {
|
---|
1852 | RTMsgError("RTDbgModSegmentAdd failed on %s: %Rrc", g_aSegs[i].szName);
|
---|
1853 | return false;
|
---|
1854 | }
|
---|
1855 | }
|
---|
1856 | return true;
|
---|
1857 | }
|
---|
1858 |
|
---|
1859 |
|
---|
1860 | /**
|
---|
1861 | * Parses a segment list.
|
---|
1862 | *
|
---|
1863 | * @returns @c true on success, @c false + msg on failure, @c false on eof.
|
---|
1864 | * @param pMap The map file handle.
|
---|
1865 | */
|
---|
1866 | static bool mapParseSymbols(PBIOSMAP pMap)
|
---|
1867 | {
|
---|
1868 | for (;;)
|
---|
1869 | {
|
---|
1870 | if (!mapReadLineStripRight(pMap, NULL))
|
---|
1871 | return false;
|
---|
1872 |
|
---|
1873 | /* The end? The line should be empty. Expectes segment name to not
|
---|
1874 | start with a space. */
|
---|
1875 | if (!pMap->szLine[0] || RT_C_IS_SPACE(pMap->szLine[0]))
|
---|
1876 | {
|
---|
1877 | if (!pMap->szLine[0])
|
---|
1878 | return true;
|
---|
1879 | return mapError(pMap, "Malformed symbol line");
|
---|
1880 | }
|
---|
1881 |
|
---|
1882 | if (!strncmp(pMap->szLine, RT_STR_TUPLE("Module: ")))
|
---|
1883 | {
|
---|
1884 | /* Parse the module line. */
|
---|
1885 | size_t offObj = sizeof("Module: ") - 1;
|
---|
1886 | while (RT_C_IS_SPACE(pMap->szLine[offObj]))
|
---|
1887 | offObj++;
|
---|
1888 | size_t offSrc = offObj;
|
---|
1889 | char ch;
|
---|
1890 | while ((ch = pMap->szLine[offSrc]) != '(' && ch != '\0')
|
---|
1891 | offSrc++;
|
---|
1892 | size_t cchObj = offSrc - offObj;
|
---|
1893 |
|
---|
1894 | offSrc++;
|
---|
1895 | size_t cchSrc = offSrc;
|
---|
1896 | while ((ch = pMap->szLine[cchSrc]) != ')' && ch != '\0')
|
---|
1897 | cchSrc++;
|
---|
1898 | cchSrc -= offSrc;
|
---|
1899 | if (ch != ')')
|
---|
1900 | return mapError(pMap, "Symbol/Module line parse error");
|
---|
1901 |
|
---|
1902 | PBIOSOBJFILE pObjFile = (PBIOSOBJFILE)RTMemAllocZ(sizeof(*pObjFile) + cchSrc + cchObj + 2);
|
---|
1903 | if (!pObjFile)
|
---|
1904 | return mapError(pMap, "Out of memory");
|
---|
1905 | char *psz = (char *)(pObjFile + 1);
|
---|
1906 | pObjFile->pszObject = psz;
|
---|
1907 | memcpy(psz, &pMap->szLine[offObj], cchObj);
|
---|
1908 | psz += cchObj;
|
---|
1909 | *psz++ = '\0';
|
---|
1910 | pObjFile->pszSource = psz;
|
---|
1911 | memcpy(psz, &pMap->szLine[offSrc], cchSrc);
|
---|
1912 | psz[cchSrc] = '\0';
|
---|
1913 | RTListAppend(&g_ObjList, &pObjFile->Node);
|
---|
1914 | }
|
---|
1915 | else
|
---|
1916 | {
|
---|
1917 | /* Parse the segment line. */
|
---|
1918 | RTFAR16 Addr;
|
---|
1919 | char *psz = pMap->szLine;
|
---|
1920 | if (!mapParseAddress(&psz, &Addr))
|
---|
1921 | return mapError(pMap, "Symbol address parser error");
|
---|
1922 |
|
---|
1923 | char szName[4096];
|
---|
1924 | if (!mapParseWord(&psz, szName, sizeof(szName)))
|
---|
1925 | return mapError(pMap, "Symbol name parser error");
|
---|
1926 |
|
---|
1927 | uint32_t uFlatAddr = ((uint32_t)Addr.sel << 4) + Addr.off;
|
---|
1928 | if (uFlatAddr != 0)
|
---|
1929 | {
|
---|
1930 | int rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr, 0 /*cb*/, 0 /*fFlags*/, NULL);
|
---|
1931 | if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
|
---|
1932 | {
|
---|
1933 | /* HACK ALERT! For dealing with lables at segment size. */ /** @todo fix end labels. */
|
---|
1934 | rc = RTDbgModSymbolAdd(g_hMapMod, szName, RTDBGSEGIDX_RVA, uFlatAddr - 1, 0 /*cb*/, 0 /*fFlags*/, NULL);
|
---|
1935 | if (RT_FAILURE(rc) && rc != VERR_DBG_ADDRESS_CONFLICT)
|
---|
1936 | return mapError(pMap, "RTDbgModSymbolAdd failed: %Rrc", rc);
|
---|
1937 | }
|
---|
1938 |
|
---|
1939 | if (g_cVerbose > 2)
|
---|
1940 | RTStrmPrintf(g_pStdErr, "read symbol - %08x %s\n", uFlatAddr, szName);
|
---|
1941 | while (RT_C_IS_SPACE(*psz))
|
---|
1942 | psz++;
|
---|
1943 | if (*psz)
|
---|
1944 | return mapError(pMap, "Junk at end of line");
|
---|
1945 | }
|
---|
1946 |
|
---|
1947 | }
|
---|
1948 | }
|
---|
1949 | }
|
---|
1950 |
|
---|
1951 |
|
---|
1952 | /**
|
---|
1953 | * Parses the given map file.
|
---|
1954 | *
|
---|
1955 | * @returns RTEXITCODE_SUCCESS and lots of globals, or RTEXITCODE_FAILURE and a
|
---|
1956 | * error message.
|
---|
1957 | * @param pMap The map file handle.
|
---|
1958 | */
|
---|
1959 | static RTEXITCODE mapParseFile(PBIOSMAP pMap)
|
---|
1960 | {
|
---|
1961 | int rc = RTDbgModCreate(&g_hMapMod, "VBoxBios", 0 /*cbSeg*/, 0 /*fFlags*/);
|
---|
1962 | if (RT_FAILURE(rc))
|
---|
1963 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDbgModCreate failed: %Rrc", rc);
|
---|
1964 |
|
---|
1965 | /*
|
---|
1966 | * Read the header.
|
---|
1967 | */
|
---|
1968 | if (!mapReadLine(pMap))
|
---|
1969 | return RTEXITCODE_FAILURE;
|
---|
1970 | if (strncmp(pMap->szLine, RT_STR_TUPLE("Open Watcom Linker Version")))
|
---|
1971 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Unexpected map-file header: '%s'", pMap->szLine);
|
---|
1972 | if ( !mapSkipNonEmptyLines(pMap)
|
---|
1973 | || !mapSkipEmptyLines(pMap))
|
---|
1974 | return RTEXITCODE_FAILURE;
|
---|
1975 |
|
---|
1976 | /*
|
---|
1977 | * Skip groups.
|
---|
1978 | */
|
---|
1979 | if (!mapSkipThruColumnHeadings(pMap, "Groups", 3, "Group", "Address", "Size", NULL))
|
---|
1980 | return RTEXITCODE_FAILURE;
|
---|
1981 | if (!mapSkipNonEmptyLines(pMap))
|
---|
1982 | return RTEXITCODE_FAILURE;
|
---|
1983 |
|
---|
1984 | /*
|
---|
1985 | * Parse segments.
|
---|
1986 | */
|
---|
1987 | if (!mapSkipThruColumnHeadings(pMap, "Segments", 5, "Segment", "Class", "Group", "Address", "Size"))
|
---|
1988 | return RTEXITCODE_FAILURE;
|
---|
1989 | if (!mapParseSegments(pMap))
|
---|
1990 | return RTEXITCODE_FAILURE;
|
---|
1991 | if (!mapSortAndAddSegments())
|
---|
1992 | return RTEXITCODE_FAILURE;
|
---|
1993 |
|
---|
1994 | /*
|
---|
1995 | * Parse symbols.
|
---|
1996 | */
|
---|
1997 | if (!mapSkipThruColumnHeadings(pMap, "Memory Map", 2, "Address", "Symbol"))
|
---|
1998 | return RTEXITCODE_FAILURE;
|
---|
1999 | if (!mapParseSymbols(pMap))
|
---|
2000 | return RTEXITCODE_FAILURE;
|
---|
2001 |
|
---|
2002 | /* Ignore the rest of the file. */
|
---|
2003 | return RTEXITCODE_SUCCESS;
|
---|
2004 | }
|
---|
2005 |
|
---|
2006 |
|
---|
2007 | /**
|
---|
2008 | * Parses the linker map file for the BIOS.
|
---|
2009 | *
|
---|
2010 | * This is generated by the Watcom linker.
|
---|
2011 | *
|
---|
2012 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
2013 | * @param pszBiosMap Path to the map file.
|
---|
2014 | */
|
---|
2015 | static RTEXITCODE ParseMapFile(const char *pszBiosMap)
|
---|
2016 | {
|
---|
2017 | BIOSMAP Map;
|
---|
2018 | Map.pszMapFile = pszBiosMap;
|
---|
2019 | Map.hStrm = NULL;
|
---|
2020 | Map.iLine = 0;
|
---|
2021 | Map.fEof = false;
|
---|
2022 | Map.cch = 0;
|
---|
2023 | Map.offNW = 0;
|
---|
2024 | int rc = RTStrmOpen(pszBiosMap, "r", &Map.hStrm);
|
---|
2025 | if (RT_FAILURE(rc))
|
---|
2026 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening '%s': %Rrc", pszBiosMap, rc);
|
---|
2027 | RTEXITCODE rcExit = mapParseFile(&Map);
|
---|
2028 | RTStrmClose(Map.hStrm);
|
---|
2029 | return rcExit;
|
---|
2030 | }
|
---|
2031 |
|
---|
2032 |
|
---|
2033 | /**
|
---|
2034 | * Reads the BIOS image into memory (g_pbImg and g_cbImg).
|
---|
2035 | *
|
---|
2036 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
2037 | * @param pszBiosImg Path to the image file.
|
---|
2038 | */
|
---|
2039 | static RTEXITCODE ReadBiosImage(const char *pszBiosImg)
|
---|
2040 | {
|
---|
2041 | void *pvImg;
|
---|
2042 | size_t cbImg;
|
---|
2043 | int rc = RTFileReadAll(pszBiosImg, &pvImg, &cbImg);
|
---|
2044 | if (RT_FAILURE(rc))
|
---|
2045 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error reading '%s': %Rrc", pszBiosImg, rc);
|
---|
2046 |
|
---|
2047 | size_t cbImgExpect;
|
---|
2048 | switch (g_enmBiosType)
|
---|
2049 | {
|
---|
2050 | case kBiosType_System: cbImgExpect = _64K; break;
|
---|
2051 | case kBiosType_Vga: cbImgExpect = _32K; break;
|
---|
2052 | default: cbImgExpect = 0; break;
|
---|
2053 | }
|
---|
2054 | if (cbImg != cbImgExpect)
|
---|
2055 | {
|
---|
2056 | RTFileReadAllFree(pvImg, cbImg);
|
---|
2057 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "The BIOS image %u bytes intead of %u bytes", cbImg, cbImgExpect);
|
---|
2058 | }
|
---|
2059 |
|
---|
2060 | g_pbImg = (uint8_t *)pvImg;
|
---|
2061 | g_cbImg = cbImg;
|
---|
2062 | return RTEXITCODE_SUCCESS;
|
---|
2063 | }
|
---|
2064 |
|
---|
2065 |
|
---|
2066 | int main(int argc, char **argv)
|
---|
2067 | {
|
---|
2068 | int rc = RTR3InitExe(argc, &argv, 0);
|
---|
2069 | if (RT_FAILURE(rc))
|
---|
2070 | return RTMsgInitFailure(rc);
|
---|
2071 |
|
---|
2072 | RTListInit(&g_ObjList);
|
---|
2073 |
|
---|
2074 | /*
|
---|
2075 | * Option config.
|
---|
2076 | */
|
---|
2077 | static RTGETOPTDEF const s_aOpts[] =
|
---|
2078 | {
|
---|
2079 | { "--bios-image", 'i', RTGETOPT_REQ_STRING },
|
---|
2080 | { "--bios-map", 'm', RTGETOPT_REQ_STRING },
|
---|
2081 | { "--bios-sym", 's', RTGETOPT_REQ_STRING },
|
---|
2082 | { "--bios-type", 't', RTGETOPT_REQ_STRING },
|
---|
2083 | { "--output", 'o', RTGETOPT_REQ_STRING },
|
---|
2084 | { "--verbose", 'v', RTGETOPT_REQ_NOTHING },
|
---|
2085 | { "--quiet", 'q', RTGETOPT_REQ_NOTHING },
|
---|
2086 | };
|
---|
2087 |
|
---|
2088 | const char *pszBiosMap = NULL;
|
---|
2089 | const char *pszBiosSym = NULL;
|
---|
2090 | const char *pszBiosImg = NULL;
|
---|
2091 | const char *pszOutput = NULL;
|
---|
2092 |
|
---|
2093 | RTGETOPTUNION ValueUnion;
|
---|
2094 | RTGETOPTSTATE GetOptState;
|
---|
2095 | rc = RTGetOptInit(&GetOptState, argc, argv, &s_aOpts[0], RT_ELEMENTS(s_aOpts), 1, RTGETOPTINIT_FLAGS_OPTS_FIRST);
|
---|
2096 | AssertReleaseRCReturn(rc, RTEXITCODE_FAILURE);
|
---|
2097 |
|
---|
2098 | /*
|
---|
2099 | * Process the options.
|
---|
2100 | */
|
---|
2101 | while ((rc = RTGetOpt(&GetOptState, &ValueUnion)) != 0)
|
---|
2102 | {
|
---|
2103 | switch (rc)
|
---|
2104 | {
|
---|
2105 | case 'i':
|
---|
2106 | if (pszBiosImg)
|
---|
2107 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is given more than once");
|
---|
2108 | pszBiosImg = ValueUnion.psz;
|
---|
2109 | break;
|
---|
2110 |
|
---|
2111 | case 'm':
|
---|
2112 | if (pszBiosMap)
|
---|
2113 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is given more than once");
|
---|
2114 | pszBiosMap = ValueUnion.psz;
|
---|
2115 | break;
|
---|
2116 |
|
---|
2117 | case 's':
|
---|
2118 | if (pszBiosSym)
|
---|
2119 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is given more than once");
|
---|
2120 | pszBiosSym = ValueUnion.psz;
|
---|
2121 | break;
|
---|
2122 |
|
---|
2123 | case 'o':
|
---|
2124 | if (pszOutput)
|
---|
2125 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--output is given more than once");
|
---|
2126 | pszOutput = ValueUnion.psz;
|
---|
2127 | break;
|
---|
2128 |
|
---|
2129 | case 't':
|
---|
2130 | if (!strcmp(ValueUnion.psz, "system"))
|
---|
2131 | {
|
---|
2132 | g_enmBiosType = kBiosType_System;
|
---|
2133 | g_uBiosFlatBase = 0xf0000;
|
---|
2134 | }
|
---|
2135 | else if (!strcmp(ValueUnion.psz, "vga"))
|
---|
2136 | {
|
---|
2137 | g_enmBiosType = kBiosType_Vga;
|
---|
2138 | g_uBiosFlatBase = 0xc0000;
|
---|
2139 | }
|
---|
2140 | else
|
---|
2141 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Unknown bios type '%s'", ValueUnion.psz);
|
---|
2142 | break;
|
---|
2143 |
|
---|
2144 | case 'v':
|
---|
2145 | g_cVerbose++;
|
---|
2146 | break;
|
---|
2147 |
|
---|
2148 | case 'q':
|
---|
2149 | g_cVerbose = 0;
|
---|
2150 | break;
|
---|
2151 |
|
---|
2152 | case 'H':
|
---|
2153 | RTPrintf("usage: %Rbn --bios-image <file.img> --bios-map <file.map> [--output <file.asm>]\n",
|
---|
2154 | argv[0]);
|
---|
2155 | return RTEXITCODE_SUCCESS;
|
---|
2156 |
|
---|
2157 | case 'V':
|
---|
2158 | {
|
---|
2159 | /* The following is assuming that svn does it's job here. */
|
---|
2160 | char szRev[] = "$Revision: 96407 $";
|
---|
2161 | char *psz = szRev;
|
---|
2162 | while (*psz && !RT_C_IS_DIGIT(*psz))
|
---|
2163 | psz++;
|
---|
2164 | size_t i = strlen(psz);
|
---|
2165 | while (i > 0 && !RT_C_IS_DIGIT(psz[i - 1]))
|
---|
2166 | psz[--i] = '\0';
|
---|
2167 |
|
---|
2168 | RTPrintf("r%s\n", psz);
|
---|
2169 | return RTEXITCODE_SUCCESS;
|
---|
2170 | }
|
---|
2171 |
|
---|
2172 | default:
|
---|
2173 | return RTGetOptPrintError(rc, &ValueUnion);
|
---|
2174 | }
|
---|
2175 | }
|
---|
2176 |
|
---|
2177 | /*
|
---|
2178 | * Got it all?
|
---|
2179 | */
|
---|
2180 | if (!pszBiosImg)
|
---|
2181 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-image is required");
|
---|
2182 | if (!pszBiosMap)
|
---|
2183 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-map is required");
|
---|
2184 | if (!pszBiosSym)
|
---|
2185 | return RTMsgErrorExit(RTEXITCODE_SYNTAX, "--bios-sym is required");
|
---|
2186 |
|
---|
2187 | /*
|
---|
2188 | * Do the job.
|
---|
2189 | */
|
---|
2190 | RTEXITCODE rcExit;
|
---|
2191 | rcExit = ReadBiosImage(pszBiosImg);
|
---|
2192 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2193 | rcExit = ParseMapFile(pszBiosMap);
|
---|
2194 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2195 | rcExit = ParseSymFile(pszBiosSym);
|
---|
2196 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2197 | rcExit = OpenOutputFile(pszOutput);
|
---|
2198 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2199 | rcExit = DisassembleBiosImage();
|
---|
2200 |
|
---|
2201 | return rcExit;
|
---|
2202 | }
|
---|
2203 |
|
---|