- // Parse and cache the line table for at this offset.
- State state;
- if (!parseStatementTable(debug_line_data, RelocMap, &offset, state))
- return 0;
- pos.first->second = state;
- }
- return &pos.first->second;
-}
-
-bool
-DWARFDebugLine::parsePrologue(DataExtractor debug_line_data,
- uint32_t *offset_ptr, Prologue *prologue) {
- const uint32_t prologue_offset = *offset_ptr;
-
- prologue->clear();
- prologue->TotalLength = debug_line_data.getU32(offset_ptr);
- prologue->Version = debug_line_data.getU16(offset_ptr);
- if (prologue->Version < 2)
- return false;
-
- prologue->PrologueLength = debug_line_data.getU32(offset_ptr);
- const uint32_t end_prologue_offset = prologue->PrologueLength + *offset_ptr;
- prologue->MinInstLength = debug_line_data.getU8(offset_ptr);
- if (prologue->Version >= 4)
- prologue->MaxOpsPerInst = debug_line_data.getU8(offset_ptr);
- prologue->DefaultIsStmt = debug_line_data.getU8(offset_ptr);
- prologue->LineBase = debug_line_data.getU8(offset_ptr);
- prologue->LineRange = debug_line_data.getU8(offset_ptr);
- prologue->OpcodeBase = debug_line_data.getU8(offset_ptr);
-
- prologue->StandardOpcodeLengths.reserve(prologue->OpcodeBase-1);
- for (uint32_t i = 1; i < prologue->OpcodeBase; ++i) {
- uint8_t op_len = debug_line_data.getU8(offset_ptr);
- prologue->StandardOpcodeLengths.push_back(op_len);
- }
-
- while (*offset_ptr < end_prologue_offset) {
- const char *s = debug_line_data.getCStr(offset_ptr);
- if (s && s[0])
- prologue->IncludeDirectories.push_back(s);
- else
- break;
- }
-
- while (*offset_ptr < end_prologue_offset) {
- const char *name = debug_line_data.getCStr(offset_ptr);
- if (name && name[0]) {
- FileNameEntry fileEntry;
- fileEntry.Name = name;
- fileEntry.DirIdx = debug_line_data.getULEB128(offset_ptr);
- fileEntry.ModTime = debug_line_data.getULEB128(offset_ptr);
- fileEntry.Length = debug_line_data.getULEB128(offset_ptr);
- prologue->FileNames.push_back(fileEntry);
- } else {
- break;
- }