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