1 //===-- BreakpointResolverName.cpp ------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Breakpoint/BreakpointResolverName.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "lldb/Breakpoint/BreakpointLocation.h" 17 #include "lldb/Core/Log.h" 18 #include "lldb/Core/StreamString.h" 19 #include "lldb/Target/Target.h" 20 21 using namespace lldb; 22 using namespace lldb_private; 23 24 BreakpointResolverName::BreakpointResolverName 25 ( 26 Breakpoint *bkpt, 27 const char *func_name, 28 uint32_t func_name_type_mask, 29 Breakpoint::MatchType type 30 ) : 31 BreakpointResolver (bkpt, BreakpointResolver::NameResolver), 32 m_func_name (), 33 m_basename_filter (), 34 m_func_name_type_mask (func_name_type_mask), 35 m_class_name (), 36 m_regex (), 37 m_match_type (type) 38 { 39 if (func_name_type_mask == eFunctionNameTypeAuto) 40 { 41 if ((::strchr (func_name, '(' ) != NULL) || 42 (::strstr (func_name, "-[") == func_name) || 43 (::strstr (func_name, "+[") == func_name)) 44 { 45 // We have a name that contains an open parens, or starts with 46 // "+[" or "-[", so this looks like a complete function prototype 47 m_func_name_type_mask = eFunctionNameTypeFull; 48 } 49 else 50 { 51 // We don't have a full function name, but we might have a partial 52 // function basename with namespaces or classes 53 if (::strstr (func_name, "::") != NULL) 54 { 55 // Keep the full name in "m_basename_filter" 56 m_basename_filter = func_name; 57 // Now set "m_func_name" to just the function basename 58 m_func_name.SetCString(m_basename_filter.c_str() + m_basename_filter.rfind("::") + 2); 59 // We have a name with a double colon which means we have a 60 // function name that is a C++ method or a function in a C++ 61 // namespace 62 m_func_name_type_mask = eFunctionNameTypeBase | eFunctionNameTypeMethod; 63 } 64 else if (::strstr (func_name, ":") != NULL) 65 { 66 // Single colon => selector 67 m_func_name_type_mask = eFunctionNameTypeSelector; 68 } 69 else 70 { 71 // just a basename by default 72 m_func_name_type_mask = eFunctionNameTypeBase; 73 } 74 } 75 } 76 77 if (!m_func_name) 78 m_func_name.SetCString(func_name); 79 80 if (m_match_type == Breakpoint::Regexp) 81 { 82 if (!m_regex.Compile (m_func_name.AsCString())) 83 { 84 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 85 86 if (log) 87 log->Warning ("function name regexp: \"%s\" did not compile.", m_func_name.AsCString()); 88 } 89 } 90 } 91 92 BreakpointResolverName::BreakpointResolverName 93 ( 94 Breakpoint *bkpt, 95 RegularExpression &func_regex 96 ) : 97 BreakpointResolver (bkpt, BreakpointResolver::NameResolver), 98 m_func_name (NULL), 99 m_class_name (NULL), 100 m_regex (func_regex), 101 m_match_type (Breakpoint::Regexp) 102 { 103 104 } 105 106 BreakpointResolverName::BreakpointResolverName 107 ( 108 Breakpoint *bkpt, 109 const char *class_name, 110 const char *method, 111 Breakpoint::MatchType type 112 ) : 113 BreakpointResolver (bkpt, BreakpointResolver::NameResolver), 114 m_func_name (method), 115 m_class_name (class_name), 116 m_regex (), 117 m_match_type (type) 118 { 119 120 } 121 122 BreakpointResolverName::~BreakpointResolverName () 123 { 124 } 125 126 // FIXME: Right now we look at the module level, and call the module's "FindFunctions". 127 // Greg says he will add function tables, maybe at the CompileUnit level to accelerate function 128 // lookup. At that point, we should switch the depth to CompileUnit, and look in these tables. 129 130 Searcher::CallbackReturn 131 BreakpointResolverName::SearchCallback 132 ( 133 SearchFilter &filter, 134 SymbolContext &context, 135 Address *addr, 136 bool containing 137 ) 138 { 139 SymbolContextList func_list; 140 SymbolContextList sym_list; 141 142 bool skip_prologue = true; 143 uint32_t i; 144 bool new_location; 145 SymbolContext sc; 146 Address break_addr; 147 assert (m_breakpoint != NULL); 148 149 if (context.target_sp) 150 { 151 skip_prologue = context.target_sp->GetSkipPrologue(); 152 } 153 154 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 155 156 if (m_class_name) 157 { 158 if (log) 159 log->Warning ("Class/method function specification not supported yet.\n"); 160 return Searcher::eCallbackReturnStop; 161 } 162 163 const bool include_symbols = false; 164 const bool append = false; 165 switch (m_match_type) 166 { 167 case Breakpoint::Exact: 168 if (context.module_sp) 169 { 170 if (m_func_name_type_mask & (eFunctionNameTypeBase | eFunctionNameTypeFull)) 171 context.module_sp->FindSymbolsWithNameAndType (m_func_name, eSymbolTypeCode, sym_list); 172 context.module_sp->FindFunctions (m_func_name, 173 m_func_name_type_mask, 174 include_symbols, 175 append, 176 func_list); 177 } 178 break; 179 case Breakpoint::Regexp: 180 if (context.module_sp) 181 { 182 context.module_sp->FindSymbolsMatchingRegExAndType (m_regex, eSymbolTypeCode, sym_list); 183 context.module_sp->FindFunctions (m_regex, 184 include_symbols, 185 append, 186 func_list); 187 } 188 break; 189 case Breakpoint::Glob: 190 if (log) 191 log->Warning ("glob is not supported yet."); 192 break; 193 } 194 195 if (!m_basename_filter.empty()) 196 { 197 // Filter out any matches whose names don't contain the basename filter 198 const char *basename_filter = m_basename_filter.c_str(); 199 if (func_list.GetSize()) 200 { 201 bool remove = false; 202 for (i = 0; i < func_list.GetSize(); remove = false) 203 { 204 if (func_list.GetContextAtIndex(i, sc) == false) 205 remove = true; 206 else if (sc.function == NULL) 207 remove = true; 208 else 209 { 210 const InlineFunctionInfo* inlined_info = NULL; 211 212 if (sc.block) 213 inlined_info = sc.block->GetInlinedFunctionInfo(); 214 215 if (inlined_info) 216 { 217 if (::strstr (inlined_info->GetName().AsCString(), basename_filter) == NULL) 218 remove = true; 219 } 220 else if (::strstr (sc.function->GetName().AsCString(), basename_filter) == NULL) 221 remove = true; 222 } 223 224 if (remove) 225 { 226 func_list.RemoveContextAtIndex(i); 227 continue; 228 } 229 i++; 230 } 231 } 232 233 if (sym_list.GetSize()) 234 { 235 bool remove = false; 236 for (i = 0; i < sym_list.GetSize(); remove = false) 237 { 238 if (sym_list.GetContextAtIndex(i, sc) == false) 239 remove = true; 240 else if (sc.symbol == NULL) 241 remove = true; 242 else if (::strstr (sc.symbol->GetName().AsCString(), basename_filter) == NULL) 243 remove = true; 244 245 if (remove) 246 { 247 sym_list.RemoveContextAtIndex(i); 248 continue; 249 } 250 i++; 251 } 252 } 253 } 254 255 // Remove any duplicates between the funcion list and the symbol list 256 if (func_list.GetSize()) 257 { 258 for (i = 0; i < func_list.GetSize(); i++) 259 { 260 if (func_list.GetContextAtIndex(i, sc) == false) 261 continue; 262 263 if (sc.function == NULL) 264 continue; 265 uint32_t j = 0; 266 while (j < sym_list.GetSize()) 267 { 268 SymbolContext symbol_sc; 269 if (sym_list.GetContextAtIndex(j, symbol_sc)) 270 { 271 if (symbol_sc.symbol && symbol_sc.symbol->GetAddressRangePtr()) 272 { 273 if (sc.function->GetAddressRange().GetBaseAddress() == symbol_sc.symbol->GetAddressRangePtr()->GetBaseAddress()) 274 { 275 sym_list.RemoveContextAtIndex(j); 276 continue; // Don't increment j 277 } 278 } 279 } 280 281 j++; 282 } 283 } 284 285 for (i = 0; i < func_list.GetSize(); i++) 286 { 287 if (func_list.GetContextAtIndex(i, sc)) 288 { 289 if (sc.block && sc.block->GetInlinedFunctionInfo()) 290 { 291 if (!sc.block->GetStartAddress(break_addr)) 292 break_addr.Clear(); 293 } 294 else if (sc.function) 295 { 296 break_addr = sc.function->GetAddressRange().GetBaseAddress(); 297 if (skip_prologue) 298 { 299 if (break_addr.IsValid()) 300 { 301 const uint32_t prologue_byte_size = sc.function->GetPrologueByteSize(); 302 if (prologue_byte_size) 303 break_addr.SetOffset(break_addr.GetOffset() + prologue_byte_size); 304 } 305 } 306 } 307 308 if (break_addr.IsValid()) 309 { 310 if (filter.AddressPasses(break_addr)) 311 { 312 BreakpointLocationSP bp_loc_sp (m_breakpoint->AddLocation(break_addr, &new_location)); 313 if (bp_loc_sp && new_location && !m_breakpoint->IsInternal()) 314 { 315 if (log) 316 { 317 StreamString s; 318 bp_loc_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 319 log->Printf ("Added location: %s\n", s.GetData()); 320 } 321 } 322 } 323 } 324 } 325 } 326 } 327 328 for (i = 0; i < sym_list.GetSize(); i++) 329 { 330 if (sym_list.GetContextAtIndex(i, sc)) 331 { 332 if (sc.symbol && sc.symbol->GetAddressRangePtr()) 333 { 334 break_addr = sc.symbol->GetAddressRangePtr()->GetBaseAddress(); 335 336 if (skip_prologue) 337 { 338 const uint32_t prologue_byte_size = sc.symbol->GetPrologueByteSize(); 339 if (prologue_byte_size) 340 break_addr.SetOffset(break_addr.GetOffset() + prologue_byte_size); 341 } 342 343 if (filter.AddressPasses(break_addr)) 344 { 345 BreakpointLocationSP bp_loc_sp (m_breakpoint->AddLocation(break_addr, &new_location)); 346 if (bp_loc_sp && new_location && !m_breakpoint->IsInternal()) 347 { 348 StreamString s; 349 bp_loc_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 350 if (log) 351 log->Printf ("Added location: %s\n", s.GetData()); 352 } 353 } 354 } 355 } 356 } 357 return Searcher::eCallbackReturnContinue; 358 } 359 360 Searcher::Depth 361 BreakpointResolverName::GetDepth() 362 { 363 return Searcher::eDepthModule; 364 } 365 366 void 367 BreakpointResolverName::GetDescription (Stream *s) 368 { 369 if (m_match_type == Breakpoint::Regexp) 370 s->Printf("regex = '%s'", m_regex.GetText()); 371 else if (m_basename_filter.empty()) 372 s->Printf("name = '%s'", m_func_name.AsCString()); 373 else 374 s->Printf("name = '%s'", m_basename_filter.c_str()); 375 } 376 377 void 378 BreakpointResolverName::Dump (Stream *s) const 379 { 380 381 } 382 383