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/lldb-private-log.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 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); 150 151 if (m_class_name) 152 { 153 if (log) 154 log->Warning ("Class/method function specification not supported yet.\n"); 155 return Searcher::eCallbackReturnStop; 156 } 157 158 switch (m_match_type) 159 { 160 case Breakpoint::Exact: 161 if (context.module_sp) 162 { 163 if (m_func_name_type_mask & (eFunctionNameTypeBase | eFunctionNameTypeFull)) 164 context.module_sp->FindSymbolsWithNameAndType (m_func_name, eSymbolTypeCode, sym_list); 165 context.module_sp->FindFunctions (m_func_name, m_func_name_type_mask, false, func_list); 166 } 167 break; 168 case Breakpoint::Regexp: 169 if (context.module_sp) 170 { 171 context.module_sp->FindSymbolsMatchingRegExAndType (m_regex, eSymbolTypeCode, sym_list); 172 context.module_sp->FindFunctions (m_regex, true, func_list); 173 } 174 break; 175 case Breakpoint::Glob: 176 if (log) 177 log->Warning ("glob is not supported yet."); 178 break; 179 } 180 181 if (!m_basename_filter.empty()) 182 { 183 // Filter out any matches whose names don't contain the basename filter 184 const char *basename_filter = m_basename_filter.c_str(); 185 if (func_list.GetSize()) 186 { 187 bool remove = false; 188 for (i = 0; i < func_list.GetSize(); remove = false) 189 { 190 if (func_list.GetContextAtIndex(i, sc) == false) 191 remove = true; 192 else if (sc.function == NULL) 193 remove = true; 194 else 195 { 196 const InlineFunctionInfo* inlined_info = NULL; 197 198 if (sc.block) 199 inlined_info = sc.block->GetInlinedFunctionInfo(); 200 201 if (inlined_info) 202 { 203 if (::strstr (inlined_info->GetName().AsCString(), basename_filter) == NULL) 204 remove = true; 205 } 206 else if (::strstr (sc.function->GetName().AsCString(), basename_filter) == NULL) 207 remove = true; 208 } 209 210 if (remove) 211 { 212 func_list.RemoveContextAtIndex(i); 213 continue; 214 } 215 i++; 216 } 217 } 218 219 if (sym_list.GetSize()) 220 { 221 bool remove = false; 222 for (i = 0; i < sym_list.GetSize(); remove = false) 223 { 224 if (sym_list.GetContextAtIndex(i, sc) == false) 225 remove = true; 226 else if (sc.symbol == NULL) 227 remove = true; 228 else if (::strstr (sc.symbol->GetName().AsCString(), basename_filter) == NULL) 229 remove = true; 230 231 if (remove) 232 { 233 sym_list.RemoveContextAtIndex(i); 234 continue; 235 } 236 i++; 237 } 238 } 239 } 240 241 // Remove any duplicates between the funcion list and the symbol list 242 if (func_list.GetSize()) 243 { 244 for (i = 0; i < func_list.GetSize(); i++) 245 { 246 if (func_list.GetContextAtIndex(i, sc) == false) 247 continue; 248 249 if (sc.function == NULL) 250 continue; 251 uint32_t j = 0; 252 while (j < sym_list.GetSize()) 253 { 254 SymbolContext symbol_sc; 255 if (sym_list.GetContextAtIndex(j, symbol_sc)) 256 { 257 if (symbol_sc.symbol && symbol_sc.symbol->GetAddressRangePtr()) 258 { 259 if (sc.function->GetAddressRange().GetBaseAddress() == symbol_sc.symbol->GetAddressRangePtr()->GetBaseAddress()) 260 { 261 sym_list.RemoveContextAtIndex(j); 262 continue; // Don't increment j 263 } 264 } 265 } 266 267 j++; 268 } 269 } 270 271 for (i = 0; i < func_list.GetSize(); i++) 272 { 273 if (func_list.GetContextAtIndex(i, sc)) 274 { 275 if (sc.block && sc.block->GetInlinedFunctionInfo()) 276 { 277 if (!sc.block->GetStartAddress(break_addr)) 278 break_addr.Clear(); 279 } 280 else if (sc.function) 281 { 282 break_addr = sc.function->GetAddressRange().GetBaseAddress(); 283 if (skip_prologue) 284 { 285 if (break_addr.IsValid()) 286 { 287 const uint32_t prologue_byte_size = sc.function->GetPrologueByteSize(); 288 if (prologue_byte_size) 289 break_addr.SetOffset(break_addr.GetOffset() + prologue_byte_size); 290 } 291 } 292 } 293 294 if (break_addr.IsValid()) 295 { 296 if (filter.AddressPasses(break_addr)) 297 { 298 BreakpointLocationSP bp_loc_sp (m_breakpoint->AddLocation(break_addr, &new_location)); 299 if (bp_loc_sp && new_location && !m_breakpoint->IsInternal()) 300 { 301 if (log) 302 { 303 StreamString s; 304 bp_loc_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 305 log->Printf ("Added location: %s\n", s.GetData()); 306 } 307 } 308 } 309 } 310 } 311 } 312 } 313 314 for (i = 0; i < sym_list.GetSize(); i++) 315 { 316 if (sym_list.GetContextAtIndex(i, sc)) 317 { 318 if (sc.symbol && sc.symbol->GetAddressRangePtr()) 319 { 320 break_addr = sc.symbol->GetAddressRangePtr()->GetBaseAddress(); 321 322 if (skip_prologue) 323 { 324 const uint32_t prologue_byte_size = sc.symbol->GetPrologueByteSize(); 325 if (prologue_byte_size) 326 break_addr.SetOffset(break_addr.GetOffset() + prologue_byte_size); 327 } 328 329 if (filter.AddressPasses(break_addr)) 330 { 331 BreakpointLocationSP bp_loc_sp (m_breakpoint->AddLocation(break_addr, &new_location)); 332 if (bp_loc_sp && new_location && !m_breakpoint->IsInternal()) 333 { 334 StreamString s; 335 bp_loc_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); 336 if (log) 337 log->Printf ("Added location: %s\n", s.GetData()); 338 } 339 } 340 } 341 } 342 } 343 return Searcher::eCallbackReturnContinue; 344 } 345 346 Searcher::Depth 347 BreakpointResolverName::GetDepth() 348 { 349 return Searcher::eDepthModule; 350 } 351 352 void 353 BreakpointResolverName::GetDescription (Stream *s) 354 { 355 if (m_match_type == Breakpoint::Regexp) 356 s->Printf("regex = '%s'", m_regex.GetText()); 357 else if (m_basename_filter.empty()) 358 s->Printf("name = '%s'", m_func_name.AsCString()); 359 else 360 s->Printf("name = '%s'", m_basename_filter.c_str()); 361 } 362 363 void 364 BreakpointResolverName::Dump (Stream *s) const 365 { 366 367 } 368 369