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1
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1 /* Ddbg - Win32 Debugger for the D programming language
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2 * Copyright (c) 2007 Jascha Wetzel
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3 * All rights reserved. See LICENSE.TXT for details.
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4 */
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5 module cli.userinterface;
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6
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7 import breakpoint;
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8 import dbgprocess;
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9 import dbgthread;
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10 import debugger;
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11 import expression.datahandler;
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12 import codeview.codeview;
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13 import util;
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14 import disasm;
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15 import codeview.coff;
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16
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17 import win32.winnt;
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18
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19 import std.string;
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20 import std.c.string;
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21 import std.utf;
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22
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23 interface UserInterface
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24 {
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25 void init(string[] args);
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26 int start();
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27
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28 bool readCommand();
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29 bool parseCommand(string cmd);
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30 void runCommands(string cmdstr);
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31
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32 void debugString(string str);
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33 bool breakpoint(int index, Breakpoint bp, DbgThread thread);
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34 void userInterrupt();
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35 void exception(uint threadId, string class_name, string msg, size_t obj_ptr);
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36 void win32exception(uint threadId, EXCEPTION_RECORD* exrec);
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37 void loadedDLL(DLL dll);
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38 void exitProcess();
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39 void singleStep();
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40 }
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41
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42 struct StackTraceEntry
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43 {
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44 uint index;
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45 Location loc;
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46 uint frame_level;
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47 CodeBlock last_known_cb;
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48
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49 void describe(UserInterfaceBase ui)
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50 {
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51 DbgIO.print("#%d ", index);
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52 if ( loc is null ) {
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53 DbgIO.println("<no debug symbols available>");
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54 return;
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55 }
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56 if ( index > 0 )
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57 DbgIO.print("0x%08x in ", loc.address);
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58 if ( loc.scope_sym !is null )
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59 {
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60 ProcedureSymbol psym = cast(ProcedureSymbol)loc.scope_sym;
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61
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62 string argstr;
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63 bool first = true;
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64 foreach_reverse ( argsym; psym.arguments.stack_symbols )
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65 {
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66 string name = argsym.name_notype;
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67 if ( !first )
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68 argstr ~= ", ";
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69 else
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70 first = false;
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71 argstr ~= argsym.name_notype;
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72 try {
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73 SymbolValue symval = ui.dbg.handleData(ui.dbg.evaluateExpression(name, frame_level), false);
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74 argstr ~= " = "~ui.symbolValueToString(symval);
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75 }
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76 catch ( Exception e ) {
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77 }
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78 }
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79 int end = find(psym.name_type, '('),
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80 start = find(psym.name_type, ' ');
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81 if ( end < 0 )
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82 end = psym.name_type.length;
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83 if ( start < 0 )
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84 start = 0;
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85 if ( end-start < 2 )
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86 start = 0;
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87 DbgIO.print("%s (", psym.name_type[start..end]);
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88 DbgIO.write(argstr~") ");
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89 }
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90 else if ( loc.data_sym !is null )
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91 DbgIO.print(loc.data_sym.name_type, " () ");
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92 else
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93 DbgIO.print("?? () ");
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94 if ( loc.codeblock !is null )
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95 DbgIO.print("at %s:%d", loc.file, loc.line);
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96 else
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97 {
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98 if ( last_known_cb !is null && last_known_cb.segment !is null )
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99 DbgIO.print("at %s:%d ", last_known_cb.segment.file.name, last_known_cb.line);
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100 if ( loc.mod !is null )
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101 DbgIO.print("from %s", loc.mod.name);
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102 else if ( ui.dbg.process !is null )
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103 {
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104 DLL dll = ui.dbg.process.findDLL(loc.address);
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105 if ( dll !is null )
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106 DbgIO.print("from %s", dll.image.name);
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107 }
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108 }
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109 DbgIO.println("");
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110 }
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111 }
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112
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113 abstract class UserInterfaceBase : UserInterface
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114 {
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115 CodeBlock last_codeblock;
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116 Module last_module;
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117 DLL last_dll;
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118
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119 Debugger dbg;
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120
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121 string[] cmdQueue;
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122
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123 void printAsmLine(uint address, string bytes, string asmsource, string symbol, string location, string source);
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124 string symbolValueToString(SymbolValue val);
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125
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126 /**********************************************************************************************
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127
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128 **********************************************************************************************/
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129 void unwindStack()
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130 {
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131 StackTraceEntry[] entries;
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132
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133 uint index,
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134 counter,
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135 frame_level;
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136 debug DbgIO.println("Stack: base 0x%x top 0x%x frame 0x%x", dbg.stack.base_ptr, dbg.stack.top_ptr, dbg.stack.frame_ptr);
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137 Location loc = dbg.images.findLocation(dbg.current_address);
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138 if ( loc is null )
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139 loc = new Location(dbg.current_address, null);
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140 entries ~= StackTraceEntry(counter++, loc, frame_level);
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141
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142 dbg.stack.firstFrame(index);
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143 ubyte[] frame = dbg.stack.prevFrame(index, index);
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144 size_t next_frame=1;
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145 while ( frame !is null )
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146 {
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147 uint ret_adr = (cast(uint[])frame)[1];
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148 loc = dbg.images.findLocation(ret_adr);
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149 if ( loc is null )
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150 loc = new Location(ret_adr, null);
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151 frame = dbg.stack.prevFrame(index, index);
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152 ++frame_level;
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153 if ( next_frame >= entries.length )
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154 entries.length = entries.length*2+1;
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155 entries[next_frame++] = StackTraceEntry(counter++, loc, frame_level);
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156 }
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157 entries.length = next_frame;
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158
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159 CodeBlock last_known_cb;
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160 foreach_reverse ( ref ste; entries )
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161 {
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162 if ( ste.loc !is null && ste.loc.codeblock !is null )
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163 last_known_cb = ste.loc.codeblock;
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164 else
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165 ste.last_known_cb = last_known_cb;
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166 }
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167
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168 foreach ( ste; entries )
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169 ste.describe(this);
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170 }
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171
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172 /**********************************************************************************************
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173 Prints an instruction with looked up symbols if existant.
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174 **********************************************************************************************/
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175 bool printDisassembly(ud_t* ud_obj)
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176 {
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177 // first call
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178 if ( ud_obj is null ) {
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179 last_codeblock = null;
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180 return true;
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181 }
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182
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183 uint address = cast(uint)ud_insn_off(ud_obj);
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184 string source, location;
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185
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186 // check whether we have symbols here
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187 Location loc = dbg.images.findLocation(address);
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188 if ( loc.codeblock !is null )
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189 {
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190 if ( last_codeblock !is loc.codeblock )
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191 {
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192 last_codeblock = loc.codeblock;
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193 string[] source_file = dbg.getSourceFile(loc.file);
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194 location = format("%s:%d", loc.file, loc.line);
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195 if ( source_file !is null && loc.line <= source_file.length )
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196 source = source_file[loc.line-1];
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197 }
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198 }
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199 else
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200 {
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201 CodeView cv;
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202 CodeBlock cb = dbg.images.findCodeBlockRel(address, cv);
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203 if ( cb !is null )
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204 {
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205 if ( last_codeblock !is cb )
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206 last_codeblock = cb;
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207 }
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208 else
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209 {
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210 uint seg;
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211 Module mod = dbg.images.findModule(address, seg);
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212 if ( mod !is null && last_module !is mod ) {
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213 last_module = mod;
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214 location = mod.name;
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215 }
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216 else
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217 {
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218 DLL dll = dbg.process.findDLL(address);
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219 if ( dll !is null && last_dll !is dll ) {
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220 last_dll = dll;
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221 location = dll.image.name;
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222 }
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223 }
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224 }
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225 }
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226
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227 string symbol;
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228 bool is_imm=true;
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229 uint jmp_dest = DisAsm.calcJumpDestination(dbg.process, dbg.process.threads[dbg.thread_id], ud_obj, is_imm);
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230 if ( is_imm && jmp_dest>0 )
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231 symbol = "\t"~describeLocation(jmp_dest, false);
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232
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233 char* hex = ud_insn_hex(ud_obj);
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234 uint hexlen = strlen(hex);
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235 char* ins = ud_insn_asm(ud_obj);
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236
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237 printAsmLine(address, hex[0..hexlen], ins[0..strlen(ins)], symbol, location, source);
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238 return true;
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239 }
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240
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5
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241 /**********************************************************************************************
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242 prints information about symbol (not recursive)
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243 **********************************************************************************************/
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244
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245 void printSymbol( NamedSymbol ns, uint indent=0)
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246 {
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247
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248 {
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249
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250
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251 char[] indent_str;
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252 indent_str.length = indent*2;
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253 indent_str[0..indent*2] = ' ';
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254 ClassInfo cs = ns.classinfo;
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255 if ( cs == ProcedureSymbol.classinfo )
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256 {
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257 ProcedureSymbol ps = cast(ProcedureSymbol)ns;
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258
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259 DbgIO.println("%s%s %d arguments",
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260 indent_str, ps.name_type, ps.arguments.symbols.length
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261 );
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262 }
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263 else if ( cs == StackSymbol.classinfo ) {
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264 StackSymbol ss = cast(StackSymbol)ns;
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265 DbgIO.println("%s%s stack (%s) %x ebp%s%d", indent_str, ns.name_type, ns.mangled_name, ss.cvtype, ss.offset>=0?"+":"", ss.offset);
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266 }
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267 else if ( cs == DataSymbol.classinfo )
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268 {
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269 DataSymbol ds = cast(DataSymbol)ns;
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270 DbgIO.println("%s%s (%s) data offset: 0x%x size: 0x%x segment: 0x%x type: 0x%x (%s)", indent_str, ds.name_type, ds.name_notype,
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271 ds.offset, ds.size, ds.cvdata.segment, ds.cvdata.type, dbg.images.mangleCVtype(ds.cvdata.type)
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272 );
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273 }
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274 else
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275 DbgIO.println("%s%s %s", indent_str, ns.name_type, cs.name);
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276 ScopeSymbol scs = cast(ScopeSymbol)ns;
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277 //if ( scs !is null )
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278 // printSymbols(cv, scs.symbols.named_symbols, indent+1);
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279 }
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280 }
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281
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1
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282 /**********************************************************************************************
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283 prints symbols that contain substring with indentation indent
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284 **********************************************************************************************/
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285 void printSymbols(CodeView cv, NamedSymbol[] syms, string substring=null, uint indent=0)
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286 {
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287 foreach ( ns; syms )
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288 {
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289 if ( substring.length > 0 && find(ns.name_notype, substring)<0 )
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290 continue;
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291
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292 char[] indent_str;
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293 indent_str.length = indent*2;
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294 indent_str[0..indent*2] = ' ';
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295 ClassInfo cs = ns.classinfo;
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296 if ( cs == ProcedureSymbol.classinfo )
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297 {
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298 ProcedureSymbol ps = cast(ProcedureSymbol)ns;
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299 size_t start = ps.cvdata.offset+cv.getCodeBase;
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300 DbgIO.println("%s%s %d arguments, entry 0x%x, debug start 0x%x, debug end 0x%x",
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301 indent_str, ps.name_type, ps.arguments.symbols.length, start,
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302 start+ps.cvdata.debug_start, start+ps.cvdata.debug_end
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303 );
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304 }
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305 else if ( cs == StackSymbol.classinfo ) {
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306 StackSymbol ss = cast(StackSymbol)ns;
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307 DbgIO.println("%s%s stack (%s) %x ebp%s%d", indent_str, ns.name_type, ns.mangled_name, ss.cvtype, ss.offset>=0?"+":"", ss.offset);
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308 }
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309 else if ( cs == DataSymbol.classinfo )
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310 {
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311 DataSymbol ds = cast(DataSymbol)ns;
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312 DbgIO.println("%s%s (%s) data offset: 0x%x size: 0x%x segment: 0x%x type: 0x%x (%s)", indent_str, ds.name_type, ds.name_notype,
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313 ds.offset, ds.size, ds.cvdata.segment, ds.cvdata.type, dbg.images.mangleCVtype(ds.cvdata.type)
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314 );
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315 }
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316 else
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317 DbgIO.println("%s%s %s", indent_str, ns.name_type, cs.name);
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318 ScopeSymbol scs = cast(ScopeSymbol)ns;
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319 if ( scs !is null )
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320 printSymbols(cv, scs.symbols.named_symbols, substring, indent+1);
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321 }
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322 }
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323
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324 /**********************************************************************************************
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325
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326 **********************************************************************************************/
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327 string describeLocation(uint vaddress, bool with_address=true)
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328 {
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329 Location loc = dbg.images.findLocation(vaddress);
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330 return describeLocation(loc, with_address);
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331 }
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332
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333 /**********************************************************************************************
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334
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335 **********************************************************************************************/
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336 string describeLocation(Location loc, bool with_address=true)
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337 {
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338 string desc;
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339
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340 if ( loc is null )
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341 return "unknown";
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342
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343 if ( loc.codeblock !is null )
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344 desc = format("%s:%d", loc.file, loc.line);
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345 if ( with_address )
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346 desc ~= (desc.length>0?" ":"")~format("(0x%08x)", loc.address);
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347
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348 if ( loc.scope_sym !is null )
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349 return loc.scope_sym.name_notype~" "~desc;
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350 if ( loc.data_sym !is null )
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351 return loc.data_sym.name_notype~" "~desc;
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352 if ( loc.mod !is null )
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353 return loc.mod.name~" "~desc;
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354 if ( dbg.process !is null )
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355 {
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356 DLL dll = dbg.process.findDLL(loc.address);
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357 if ( dll !is null )
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358 return dll.image.name~" "~desc;
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359 }
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360
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361 return desc;
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362 }
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363
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364 /**********************************************************************************************
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365
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366 **********************************************************************************************/
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367 void runCommands(string cmd_string)
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368 {
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369 cmd_string = replace(cmd_string, "\\\"", "\"");
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370 auto r = std.regexp.RegExp("(([^;\" \\t]+)|(\"[^\"]+\"))+|;");
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371 string cmd;
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372 string[] cmds;
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373 foreach ( m; r.search(cmd_string) )
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374 {
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375 if ( m.match(0) == ";" ) {
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376 cmdQueue ~= cmd~";";
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377 cmd = null;
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378 }
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379 else
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380 cmd ~= " "~m.match(0);
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381 }
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382 if ( cmd !is null )
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383 cmdQueue ~= cmd~";";
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384 }
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385 }
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