explicit operator bool() const { return Version && AddrSize; }
};
+/// Get the byte size of the unit length field depending on the DWARF format.
+inline uint8_t getUnitLengthFieldByteSize(DwarfFormat Format) {
+ switch (Format) {
+ case DwarfFormat::DWARF32:
+ return 4;
+ case DwarfFormat::DWARF64:
+ return 12;
+ }
+ llvm_unreachable("Invalid Format value");
+}
+
/// Get the fixed byte size for a given form.
///
/// If the form has a fixed byte size, then an Optional with a value will be
return UnitType == dwarf::DW_UT_type || UnitType == dwarf::DW_UT_split_type;
}
uint8_t getSize() const { return Size; }
+ uint8_t getUnitLengthFieldByteSize() const {
+ return dwarf::getUnitLengthFieldByteSize(FormParams.Format);
+ }
uint64_t getNextUnitOffset() const {
- return Offset + Length +
- (FormParams.Format == llvm::dwarf::DwarfFormat::DWARF64 ? 4 : 0) +
- FormParams.getDwarfOffsetByteSize();
+ return Offset + Length + getUnitLengthFieldByteSize();
}
};
private:
/// Size in bytes of the .debug_info data associated with this compile unit.
size_t getDebugInfoSize() const {
- return Header.getLength() + 4 - getHeaderSize();
+ return Header.getLength() + Header.getUnitLengthFieldByteSize() -
+ getHeaderSize();
}
/// extractDIEsIfNeeded - Parses a compile unit and indexes its DIEs if it
--- /dev/null
+# RUN: llvm-mc %s -filetype obj -triple x86_64-unknown-elf -o - | \
+# RUN: llvm-dwarfdump -debug-info - | \
+# RUN: FileCheck %s
+
+ .section .debug_abbrev,"",@progbits
+ .byte 0x01 # Abbrev code
+ .byte 0x11 # DW_TAG_compile_unit
+ .byte 0x00 # DW_CHILDREN_no
+ .byte 0x13 # DW_AT_language
+ .byte 0x05 # DW_FORM_data2
+ .byte 0x00 # EOM(1)
+ .byte 0x00 # EOM(2)
+ .byte 0x00 # EOM(3)
+
+ .section .debug_info,"",@progbits
+# CHECK: .debug_info contents:
+# CHECK-NEXT: 0x00000000: Compile Unit:
+DI_4_64_start:
+ .long 0xffffffff # DWARF64 mark
+ .quad DI_4_64_end - DI_4_64_version # Length of Unit
+# CHECK-SAME: length = 0x0000000f
+DI_4_64_version:
+ .short 4 # DWARF version number
+# CHECK-SAME: version = 0x0004
+ .quad .debug_abbrev # Offset Into Abbrev. Section
+# CHECK-SAME: abbr_offset = 0x0000
+ .byte 8 # Address Size (in bytes)
+# CHECK-SAME: addr_size = 0x08
+# CHECK-SAME: (next unit at 0x0000001b)
+
+ .byte 1 # Abbreviation code
+# CHECK: 0x00000017: DW_TAG_compile_unit
+ .short 4 # DW_LANG_C_plus_plus
+# CHECK-NEXT: DW_AT_language (DW_LANG_C_plus_plus)
+ .byte 0 # NULL
+DI_4_64_end:
+