# Test object with an artifically constructed type unit header to verify
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# that the length field is correctly used to verify the validity of the
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# type_offset field.
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#
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# To generate the test object:
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# llvm-mc -triple x86_64-unknown-linux typeunit-header.s -filetype=obj \
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# -o typeunit-header.elf-x86-64
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#
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# We only have an abbreviation for the type unit die which is all we need.
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# Real type unit dies have quite different attributes of course, but we
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# just need to demonstrate an issue with validating length, so we just give it
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# a single visibility attribute.
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.section .debug_abbrev,"",@progbits
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.byte 0x01 # Abbrev code
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.byte 0x41 # DW_TAG_type_unit
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.byte 0x01 # DW_CHILDREN_yes
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.byte 0x17 # DW_AT_visibility
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.byte 0x0b # DW_FORM_data1
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.byte 0x00 # EOM(1)
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.byte 0x00 # EOM(2)
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.byte 0x02 # Abbrev code
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.byte 0x13 # DW_TAG_structure_type
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.byte 0x00 # DW_CHILDREN_no (no members)
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.byte 0x17 # DW_AT_visibility
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.byte 0x0b # DW_FORM_data1
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.byte 0x00 # EOM(1)
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.byte 0x00 # EOM(2)
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.byte 0x00 # EOM(3)
|
|
.section .debug_types,"",@progbits
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# DWARF v4 Type unit header - DWARF32 format.
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TU_4_32_start:
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.long TU_4_32_end-TU_4_32_version # Length of Unit
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TU_4_32_version:
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.short 4 # DWARF version number
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.long .debug_abbrev # Offset Into Abbrev. Section
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.byte 8 # Address Size (in bytes)
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.quad 0x0011223344556677 # Type Signature
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.long TU_4_32_type-TU_4_32_start # Type offset
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# The type-unit DIE, which has just a visibility attribute.
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.byte 1 # Abbreviation code
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.byte 1 # DW_VIS_local
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# The type DIE, which also just has a one-byte visibility attribute.
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TU_4_32_type:
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.byte 2 # Abbreviation code
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.byte 1 # DW_VIS_local
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.byte 0 # NULL
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.byte 0 # NULL
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TU_4_32_end:
|
