diff options
Diffstat (limited to 'source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp')
| -rw-r--r-- | source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp | 248 |
1 files changed, 148 insertions, 100 deletions
diff --git a/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp index 4fde5748d3f3..5d2a8ffdb85b 100644 --- a/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp +++ b/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp @@ -154,6 +154,9 @@ DWARFFormValue::GetFixedFormSizesForAddressSize(uint8_t addr_size, DWARFFormValue::DWARFFormValue() : m_cu(NULL), m_form(0), m_value() {} +DWARFFormValue::DWARFFormValue(const DWARFUnit *cu) + : m_cu(cu), m_form(0), m_value() {} + DWARFFormValue::DWARFFormValue(const DWARFUnit *cu, dw_form_t form) : m_cu(cu), m_form(form), m_value() {} @@ -165,6 +168,9 @@ void DWARFFormValue::Clear() { bool DWARFFormValue::ExtractValue(const DWARFDataExtractor &data, lldb::offset_t *offset_ptr) { + if (m_form == DW_FORM_implicit_const) + return true; + bool indirect = false; bool is_block = false; m_value.data = NULL; @@ -176,8 +182,12 @@ bool DWARFFormValue::ExtractValue(const DWARFDataExtractor &data, switch (m_form) { case DW_FORM_addr: assert(m_cu); - m_value.value.uval = data.GetMaxU64( - offset_ptr, DWARFUnit::GetAddressByteSize(m_cu)); + m_value.value.uval = + data.GetMaxU64(offset_ptr, DWARFUnit::GetAddressByteSize(m_cu)); + break; + case DW_FORM_block1: + m_value.value.uval = data.GetU8(offset_ptr); + is_block = true; break; case DW_FORM_block2: m_value.value.uval = data.GetU16(offset_ptr); @@ -187,94 +197,82 @@ bool DWARFFormValue::ExtractValue(const DWARFDataExtractor &data, m_value.value.uval = data.GetU32(offset_ptr); is_block = true; break; - case DW_FORM_data2: - m_value.value.uval = data.GetU16(offset_ptr); - break; - case DW_FORM_data4: - m_value.value.uval = data.GetU32(offset_ptr); - break; - case DW_FORM_data8: - m_value.value.uval = data.GetU64(offset_ptr); - break; - case DW_FORM_string: - m_value.value.cstr = data.GetCStr(offset_ptr); + case DW_FORM_data16: + m_value.value.uval = 16; + is_block = true; break; case DW_FORM_exprloc: case DW_FORM_block: m_value.value.uval = data.GetULEB128(offset_ptr); is_block = true; break; - case DW_FORM_block1: - m_value.value.uval = data.GetU8(offset_ptr); - is_block = true; - break; - case DW_FORM_data1: - m_value.value.uval = data.GetU8(offset_ptr); - break; - case DW_FORM_flag: - m_value.value.uval = data.GetU8(offset_ptr); + case DW_FORM_string: + m_value.value.cstr = data.GetCStr(offset_ptr); break; case DW_FORM_sdata: m_value.value.sval = data.GetSLEB128(offset_ptr); break; case DW_FORM_strp: + case DW_FORM_line_strp: + case DW_FORM_sec_offset: assert(m_cu); m_value.value.uval = data.GetMaxU64(offset_ptr, DWARFUnit::IsDWARF64(m_cu) ? 8 : 4); break; - // case DW_FORM_APPLE_db_str: - case DW_FORM_udata: - m_value.value.uval = data.GetULEB128(offset_ptr); - break; - case DW_FORM_ref_addr: - assert(m_cu); - ref_addr_size = 4; - if (m_cu->GetVersion() <= 2) - ref_addr_size = m_cu->GetAddressByteSize(); - else - ref_addr_size = m_cu->IsDWARF64() ? 8 : 4; - m_value.value.uval = data.GetMaxU64(offset_ptr, ref_addr_size); - break; + case DW_FORM_addrx1: + case DW_FORM_strx1: case DW_FORM_ref1: + case DW_FORM_data1: + case DW_FORM_flag: m_value.value.uval = data.GetU8(offset_ptr); break; + case DW_FORM_addrx2: + case DW_FORM_strx2: case DW_FORM_ref2: + case DW_FORM_data2: m_value.value.uval = data.GetU16(offset_ptr); break; + case DW_FORM_addrx3: + case DW_FORM_strx3: + m_value.value.uval = data.GetMaxU64(offset_ptr, 3); + break; + case DW_FORM_addrx4: + case DW_FORM_strx4: case DW_FORM_ref4: + case DW_FORM_data4: m_value.value.uval = data.GetU32(offset_ptr); break; + case DW_FORM_data8: case DW_FORM_ref8: + case DW_FORM_ref_sig8: m_value.value.uval = data.GetU64(offset_ptr); break; + case DW_FORM_addrx: + case DW_FORM_rnglistx: + case DW_FORM_strx: + case DW_FORM_udata: case DW_FORM_ref_udata: + case DW_FORM_GNU_str_index: + case DW_FORM_GNU_addr_index: m_value.value.uval = data.GetULEB128(offset_ptr); break; + case DW_FORM_ref_addr: + assert(m_cu); + if (m_cu->GetVersion() <= 2) + ref_addr_size = m_cu->GetAddressByteSize(); + else + ref_addr_size = m_cu->IsDWARF64() ? 8 : 4; + m_value.value.uval = data.GetMaxU64(offset_ptr, ref_addr_size); + break; case DW_FORM_indirect: m_form = data.GetULEB128(offset_ptr); indirect = true; break; - - case DW_FORM_sec_offset: - assert(m_cu); - m_value.value.uval = - data.GetMaxU64(offset_ptr, DWARFUnit::IsDWARF64(m_cu) ? 8 : 4); - break; case DW_FORM_flag_present: m_value.value.uval = 1; break; - case DW_FORM_ref_sig8: - m_value.value.uval = data.GetU64(offset_ptr); - break; - case DW_FORM_GNU_str_index: - m_value.value.uval = data.GetULEB128(offset_ptr); - break; - case DW_FORM_GNU_addr_index: - m_value.value.uval = data.GetULEB128(offset_ptr); - break; default: return false; - break; } } while (indirect); @@ -346,49 +344,65 @@ bool DWARFFormValue::SkipValue(dw_form_t form, // 0 bytes values (implied from DW_FORM) case DW_FORM_flag_present: + case DW_FORM_implicit_const: return true; - // 1 byte values - case DW_FORM_data1: - case DW_FORM_flag: - case DW_FORM_ref1: - *offset_ptr += 1; - return true; + // 1 byte values + case DW_FORM_addrx1: + case DW_FORM_data1: + case DW_FORM_flag: + case DW_FORM_ref1: + case DW_FORM_strx1: + *offset_ptr += 1; + return true; - // 2 byte values - case DW_FORM_data2: - case DW_FORM_ref2: - *offset_ptr += 2; - return true; + // 2 byte values + case DW_FORM_addrx2: + case DW_FORM_data2: + case DW_FORM_ref2: + case DW_FORM_strx2: + *offset_ptr += 2; + return true; - // 32 bit for DWARF 32, 64 for DWARF 64 - case DW_FORM_sec_offset: - case DW_FORM_strp: - assert(cu); - *offset_ptr += (cu->IsDWARF64() ? 8 : 4); - return true; + // 3 byte values + case DW_FORM_addrx3: + case DW_FORM_strx3: + *offset_ptr += 3; + return true; - // 4 byte values - case DW_FORM_data4: - case DW_FORM_ref4: - *offset_ptr += 4; - return true; + // 32 bit for DWARF 32, 64 for DWARF 64 + case DW_FORM_sec_offset: + case DW_FORM_strp: + assert(cu); + *offset_ptr += (cu->IsDWARF64() ? 8 : 4); + return true; - // 8 byte values - case DW_FORM_data8: - case DW_FORM_ref8: - case DW_FORM_ref_sig8: - *offset_ptr += 8; - return true; + // 4 byte values + case DW_FORM_addrx4: + case DW_FORM_data4: + case DW_FORM_ref4: + case DW_FORM_strx4: + *offset_ptr += 4; + return true; - // signed or unsigned LEB 128 values - case DW_FORM_sdata: - case DW_FORM_udata: - case DW_FORM_ref_udata: - case DW_FORM_GNU_addr_index: - case DW_FORM_GNU_str_index: - debug_info_data.Skip_LEB128(offset_ptr); - return true; + // 8 byte values + case DW_FORM_data8: + case DW_FORM_ref8: + case DW_FORM_ref_sig8: + *offset_ptr += 8; + return true; + + // signed or unsigned LEB 128 values + case DW_FORM_addrx: + case DW_FORM_rnglistx: + case DW_FORM_sdata: + case DW_FORM_udata: + case DW_FORM_ref_udata: + case DW_FORM_GNU_addr_index: + case DW_FORM_GNU_str_index: + case DW_FORM_strx: + debug_info_data.Skip_LEB128(offset_ptr); + return true; case DW_FORM_indirect: { dw_form_t indirect_form = debug_info_data.GetULEB128(offset_ptr); @@ -546,6 +560,26 @@ const char *DWARFFormValue::AsCString() const { index_size); return symbol_file->get_debug_str_data().PeekCStr(str_offset); } + + if (m_form == DW_FORM_strx || m_form == DW_FORM_strx1 || + m_form == DW_FORM_strx2 || m_form == DW_FORM_strx3 || + m_form == DW_FORM_strx4) { + + // The same code as above. + if (!symbol_file) + return nullptr; + + uint32_t indexSize = m_cu->IsDWARF64() ? 8 : 4; + lldb::offset_t offset = + m_cu->GetStrOffsetsBase() + m_value.value.uval * indexSize; + dw_offset_t strOffset = + symbol_file->get_debug_str_offsets_data().GetMaxU64(&offset, indexSize); + return symbol_file->get_debug_str_data().PeekCStr(strOffset); + } + + if (m_form == DW_FORM_line_strp) + return symbol_file->get_debug_line_str_data().PeekCStr(m_value.value.uval); + return nullptr; } @@ -556,7 +590,9 @@ dw_addr_t DWARFFormValue::Address() const { return Unsigned(); assert(m_cu); - assert(m_form == DW_FORM_GNU_addr_index); + assert(m_form == DW_FORM_GNU_addr_index || m_form == DW_FORM_addrx || + m_form == DW_FORM_addrx1 || m_form == DW_FORM_addrx2 || + m_form == DW_FORM_addrx3 || m_form == DW_FORM_addrx4); if (!symbol_file) return 0; @@ -568,7 +604,7 @@ dw_addr_t DWARFFormValue::Address() const { } uint64_t DWARFFormValue::Reference() const { - uint64_t die_offset = m_value.value.uval; + uint64_t value = m_value.value.uval; switch (m_form) { case DW_FORM_ref1: case DW_FORM_ref2: @@ -577,32 +613,36 @@ uint64_t DWARFFormValue::Reference() const { case DW_FORM_ref_udata: assert(m_cu); // CU must be valid for DW_FORM_ref forms that are compile // unit relative or we will get this wrong - die_offset += m_cu->GetOffset(); - break; + return value + m_cu->GetOffset(); + + case DW_FORM_ref_addr: + case DW_FORM_ref_sig8: + case DW_FORM_GNU_ref_alt: + return value; default: - break; + return DW_INVALID_OFFSET; } - - return die_offset; } uint64_t DWARFFormValue::Reference(dw_offset_t base_offset) const { - uint64_t die_offset = m_value.value.uval; + uint64_t value = m_value.value.uval; switch (m_form) { case DW_FORM_ref1: case DW_FORM_ref2: case DW_FORM_ref4: case DW_FORM_ref8: case DW_FORM_ref_udata: - die_offset += base_offset; - break; + return value + base_offset; + + case DW_FORM_ref_addr: + case DW_FORM_ref_sig8: + case DW_FORM_GNU_ref_alt: + return value; default: - break; + return DW_INVALID_OFFSET; } - - return die_offset; } const uint8_t *DWARFFormValue::BlockData() const { return m_value.data; } @@ -729,6 +769,8 @@ int DWARFFormValue::Compare(const DWARFFormValue &a_value, bool DWARFFormValue::FormIsSupported(dw_form_t form) { switch (form) { case DW_FORM_addr: + case DW_FORM_addrx: + case DW_FORM_rnglistx: case DW_FORM_block2: case DW_FORM_block4: case DW_FORM_data2: @@ -741,6 +783,11 @@ bool DWARFFormValue::FormIsSupported(dw_form_t form) { case DW_FORM_flag: case DW_FORM_sdata: case DW_FORM_strp: + case DW_FORM_strx: + case DW_FORM_strx1: + case DW_FORM_strx2: + case DW_FORM_strx3: + case DW_FORM_strx4: case DW_FORM_udata: case DW_FORM_ref_addr: case DW_FORM_ref1: @@ -755,6 +802,7 @@ bool DWARFFormValue::FormIsSupported(dw_form_t form) { case DW_FORM_ref_sig8: case DW_FORM_GNU_str_index: case DW_FORM_GNU_addr_index: + case DW_FORM_implicit_const: return true; default: break; |