diff options
Diffstat (limited to 'lib/DebugInfo/DWARFFormValue.cpp')
| -rw-r--r-- | lib/DebugInfo/DWARFFormValue.cpp | 345 |
1 files changed, 170 insertions, 175 deletions
diff --git a/lib/DebugInfo/DWARFFormValue.cpp b/lib/DebugInfo/DWARFFormValue.cpp index 5aa746915a..8d018b659d 100644 --- a/lib/DebugInfo/DWARFFormValue.cpp +++ b/lib/DebugInfo/DWARFFormValue.cpp @@ -17,156 +17,156 @@ using namespace llvm; using namespace dwarf; static const uint8_t form_sizes_addr4[] = { - 0, // 0x00 unused - 4, // 0x01 DW_FORM_addr - 0, // 0x02 unused - 0, // 0x03 DW_FORM_block2 - 0, // 0x04 DW_FORM_block4 - 2, // 0x05 DW_FORM_data2 - 4, // 0x06 DW_FORM_data4 - 8, // 0x07 DW_FORM_data8 - 0, // 0x08 DW_FORM_string - 0, // 0x09 DW_FORM_block - 0, // 0x0a DW_FORM_block1 - 1, // 0x0b DW_FORM_data1 - 1, // 0x0c DW_FORM_flag - 0, // 0x0d DW_FORM_sdata - 4, // 0x0e DW_FORM_strp - 0, // 0x0f DW_FORM_udata - 4, // 0x10 DW_FORM_ref_addr - 1, // 0x11 DW_FORM_ref1 - 2, // 0x12 DW_FORM_ref2 - 4, // 0x13 DW_FORM_ref4 - 8, // 0x14 DW_FORM_ref8 - 0, // 0x15 DW_FORM_ref_udata - 0, // 0x16 DW_FORM_indirect + 0, // 0x00 unused + 4, // 0x01 DW_FORM_addr + 0, // 0x02 unused + 0, // 0x03 DW_FORM_block2 + 0, // 0x04 DW_FORM_block4 + 2, // 0x05 DW_FORM_data2 + 4, // 0x06 DW_FORM_data4 + 8, // 0x07 DW_FORM_data8 + 0, // 0x08 DW_FORM_string + 0, // 0x09 DW_FORM_block + 0, // 0x0a DW_FORM_block1 + 1, // 0x0b DW_FORM_data1 + 1, // 0x0c DW_FORM_flag + 0, // 0x0d DW_FORM_sdata + 4, // 0x0e DW_FORM_strp + 0, // 0x0f DW_FORM_udata + 4, // 0x10 DW_FORM_ref_addr + 1, // 0x11 DW_FORM_ref1 + 2, // 0x12 DW_FORM_ref2 + 4, // 0x13 DW_FORM_ref4 + 8, // 0x14 DW_FORM_ref8 + 0, // 0x15 DW_FORM_ref_udata + 0, // 0x16 DW_FORM_indirect }; static const uint8_t form_sizes_addr8[] = { - 0, // 0x00 unused - 8, // 0x01 DW_FORM_addr - 0, // 0x02 unused - 0, // 0x03 DW_FORM_block2 - 0, // 0x04 DW_FORM_block4 - 2, // 0x05 DW_FORM_data2 - 4, // 0x06 DW_FORM_data4 - 8, // 0x07 DW_FORM_data8 - 0, // 0x08 DW_FORM_string - 0, // 0x09 DW_FORM_block - 0, // 0x0a DW_FORM_block1 - 1, // 0x0b DW_FORM_data1 - 1, // 0x0c DW_FORM_flag - 0, // 0x0d DW_FORM_sdata - 4, // 0x0e DW_FORM_strp - 0, // 0x0f DW_FORM_udata - 8, // 0x10 DW_FORM_ref_addr - 1, // 0x11 DW_FORM_ref1 - 2, // 0x12 DW_FORM_ref2 - 4, // 0x13 DW_FORM_ref4 - 8, // 0x14 DW_FORM_ref8 - 0, // 0x15 DW_FORM_ref_udata - 0, // 0x16 DW_FORM_indirect + 0, // 0x00 unused + 8, // 0x01 DW_FORM_addr + 0, // 0x02 unused + 0, // 0x03 DW_FORM_block2 + 0, // 0x04 DW_FORM_block4 + 2, // 0x05 DW_FORM_data2 + 4, // 0x06 DW_FORM_data4 + 8, // 0x07 DW_FORM_data8 + 0, // 0x08 DW_FORM_string + 0, // 0x09 DW_FORM_block + 0, // 0x0a DW_FORM_block1 + 1, // 0x0b DW_FORM_data1 + 1, // 0x0c DW_FORM_flag + 0, // 0x0d DW_FORM_sdata + 4, // 0x0e DW_FORM_strp + 0, // 0x0f DW_FORM_udata + 8, // 0x10 DW_FORM_ref_addr + 1, // 0x11 DW_FORM_ref1 + 2, // 0x12 DW_FORM_ref2 + 4, // 0x13 DW_FORM_ref4 + 8, // 0x14 DW_FORM_ref8 + 0, // 0x15 DW_FORM_ref_udata + 0, // 0x16 DW_FORM_indirect }; const uint8_t * DWARFFormValue::getFixedFormSizesForAddressSize(uint8_t addr_size) { - switch (addr_size) { - case 4: return form_sizes_addr4; - case 8: return form_sizes_addr8; - } - return NULL; + switch (addr_size) { + case 4: return form_sizes_addr4; + case 8: return form_sizes_addr8; + } + return NULL; } bool DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, const DWARFCompileUnit* cu) { - bool indirect = false; - bool is_block = false; - Value.data = NULL; - // Read the value for the form into value and follow and DW_FORM_indirect - // instances we run into - do { - indirect = false; - switch (Form) { - case DW_FORM_addr: - case DW_FORM_ref_addr: - Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize()); - break; - case DW_FORM_block: - Value.uval = data.getULEB128(offset_ptr); - is_block = true; - break; - case DW_FORM_block1: - Value.uval = data.getU8(offset_ptr); - is_block = true; - break; - case DW_FORM_block2: - Value.uval = data.getU16(offset_ptr); - is_block = true; - break; - case DW_FORM_block4: - Value.uval = data.getU32(offset_ptr); - is_block = true; - break; - case DW_FORM_data1: - case DW_FORM_ref1: - case DW_FORM_flag: - Value.uval = data.getU8(offset_ptr); - break; - case DW_FORM_data2: - case DW_FORM_ref2: - Value.uval = data.getU16(offset_ptr); - break; - case DW_FORM_data4: - case DW_FORM_ref4: - Value.uval = data.getU32(offset_ptr); - break; - case DW_FORM_data8: - case DW_FORM_ref8: - Value.uval = data.getU64(offset_ptr); - break; - case DW_FORM_sdata: - Value.sval = data.getSLEB128(offset_ptr); - break; - case DW_FORM_strp: - Value.uval = data.getU32(offset_ptr); - break; - case DW_FORM_udata: - case DW_FORM_ref_udata: - Value.uval = data.getULEB128(offset_ptr); - break; - case DW_FORM_string: - Value.cstr = data.getCStr(offset_ptr); - // Set the string value to also be the data for inlined cstr form - // values only so we can tell the differnence between DW_FORM_string - // and DW_FORM_strp form values - Value.data = (uint8_t*)Value.cstr; - break; - case DW_FORM_indirect: - Form = data.getULEB128(offset_ptr); - indirect = true; - break; - default: - return false; - } - } while (indirect); - - if (is_block) { - StringRef str = data.getData().substr(*offset_ptr, Value.uval); - Value.data = NULL; - if (!str.empty()) { - Value.data = reinterpret_cast<const uint8_t *>(str.data()); - *offset_ptr += Value.uval; + bool indirect = false; + bool is_block = false; + Value.data = NULL; + // Read the value for the form into value and follow and DW_FORM_indirect + // instances we run into + do { + indirect = false; + switch (Form) { + case DW_FORM_addr: + case DW_FORM_ref_addr: + Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize()); + break; + case DW_FORM_block: + Value.uval = data.getULEB128(offset_ptr); + is_block = true; + break; + case DW_FORM_block1: + Value.uval = data.getU8(offset_ptr); + is_block = true; + break; + case DW_FORM_block2: + Value.uval = data.getU16(offset_ptr); + is_block = true; + break; + case DW_FORM_block4: + Value.uval = data.getU32(offset_ptr); + is_block = true; + break; + case DW_FORM_data1: + case DW_FORM_ref1: + case DW_FORM_flag: + Value.uval = data.getU8(offset_ptr); + break; + case DW_FORM_data2: + case DW_FORM_ref2: + Value.uval = data.getU16(offset_ptr); + break; + case DW_FORM_data4: + case DW_FORM_ref4: + Value.uval = data.getU32(offset_ptr); + break; + case DW_FORM_data8: + case DW_FORM_ref8: + Value.uval = data.getU64(offset_ptr); + break; + case DW_FORM_sdata: + Value.sval = data.getSLEB128(offset_ptr); + break; + case DW_FORM_strp: + Value.uval = data.getU32(offset_ptr); + break; + case DW_FORM_udata: + case DW_FORM_ref_udata: + Value.uval = data.getULEB128(offset_ptr); + break; + case DW_FORM_string: + Value.cstr = data.getCStr(offset_ptr); + // Set the string value to also be the data for inlined cstr form + // values only so we can tell the differnence between DW_FORM_string + // and DW_FORM_strp form values + Value.data = (uint8_t*)Value.cstr; + break; + case DW_FORM_indirect: + Form = data.getULEB128(offset_ptr); + indirect = true; + break; + default: + return false; } + } while (indirect); + + if (is_block) { + StringRef str = data.getData().substr(*offset_ptr, Value.uval); + Value.data = NULL; + if (!str.empty()) { + Value.data = reinterpret_cast<const uint8_t *>(str.data()); + *offset_ptr += Value.uval; } + } - return true; + return true; } bool DWARFFormValue::skipValue(DataExtractor debug_info_data, uint32_t* offset_ptr, const DWARFCompileUnit* cu) const { - return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu); + return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu); } bool @@ -261,8 +261,7 @@ DWARFFormValue::dump(raw_ostream &OS, const DataExtractor *debug_str_data, uint64_t uvalue = getUnsigned(); bool cu_relative_offset = false; - switch (Form) - { + switch (Form) { case DW_FORM_addr: OS << format("0x%016x", uvalue); break; case DW_FORM_flag: case DW_FORM_data1: OS << format("0x%02x", uvalue); break; @@ -365,22 +364,21 @@ DWARFFormValue::getAsCString(const DataExtractor *debug_str_data_ptr) const { return NULL; } -uint64_t -DWARFFormValue::getReference(const DWARFCompileUnit *cu) const { - uint64_t die_offset = Value.uval; - switch (Form) { - case DW_FORM_ref1: - case DW_FORM_ref2: - case DW_FORM_ref4: - case DW_FORM_ref8: - case DW_FORM_ref_udata: - die_offset += (cu ? cu->getOffset() : 0); - break; - default: - break; - } +uint64_t DWARFFormValue::getReference(const DWARFCompileUnit *cu) const { + uint64_t die_offset = Value.uval; + switch (Form) { + case DW_FORM_ref1: + case DW_FORM_ref2: + case DW_FORM_ref4: + case DW_FORM_ref8: + case DW_FORM_ref_udata: + die_offset += (cu ? cu->getOffset() : 0); + break; + default: + break; + } - return die_offset; + return die_offset; } bool @@ -391,44 +389,41 @@ DWARFFormValue::resolveCompileUnitReferences(const DWARFCompileUnit* cu) { case DW_FORM_ref4: case DW_FORM_ref8: case DW_FORM_ref_udata: - Value.uval += cu->getOffset(); - Form = DW_FORM_ref_addr; - return true; + Value.uval += cu->getOffset(); + Form = DW_FORM_ref_addr; + return true; default: - break; + break; } - return false; } const uint8_t *DWARFFormValue::BlockData() const { - if (!isInlinedCStr()) - return Value.data; - return NULL; + if (!isInlinedCStr()) + return Value.data; + return NULL; } bool DWARFFormValue::isBlockForm(uint16_t form) { - switch (form) - { - case DW_FORM_block: - case DW_FORM_block1: - case DW_FORM_block2: - case DW_FORM_block4: - return true; - } - return false; + switch (form) { + case DW_FORM_block: + case DW_FORM_block1: + case DW_FORM_block2: + case DW_FORM_block4: + return true; + } + return false; } bool DWARFFormValue::isDataForm(uint16_t form) { - switch (form) - { - case DW_FORM_sdata: - case DW_FORM_udata: - case DW_FORM_data1: - case DW_FORM_data2: - case DW_FORM_data4: - case DW_FORM_data8: - return true; - } - return false; + switch (form) { + case DW_FORM_sdata: + case DW_FORM_udata: + case DW_FORM_data1: + case DW_FORM_data2: + case DW_FORM_data4: + case DW_FORM_data8: + return true; + } + return false; } |