dwarfdump-header.s
15.6 KB
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# Test object to verify dwarfdump handles v4 and v5 CU/TU/line headers.
# We have a representative set of units: v4 CU, v5 CU, v4 TU, v5 split TU.
# We have v4 and v5 line-table headers.
#
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o
# RUN: llvm-dwarfdump -v %t.o | FileCheck %s
# RUN: llvm-dwarfdump -verify %t.o | FileCheck %s --check-prefix=VERIFY
.section .debug_str,"MS",@progbits,1
str_producer:
.asciz "Handmade DWARF producer"
str_CU_4:
.asciz "V4_compile_unit"
str_CU_5:
.asciz "V5_compile_unit"
str_TU_4:
.asciz "V4_type_unit"
str_LT_5a:
.asciz "Directory5a"
str_LT_5b:
.asciz "Directory5b"
.section .debug_str.dwo,"MSe",@progbits,1
dwo_TU_5:
.asciz "V5_split_type_unit"
dwo_producer:
.asciz "Handmade DWO producer"
dwo_CU_5:
.asciz "V5_dwo_compile_unit"
dwo_LT_5a:
.asciz "DWODirectory5a"
dwo_LT_5b:
.asciz "DWODirectory5b"
# All CUs/TUs use the same abbrev section for simplicity.
.section .debug_abbrev,"",@progbits
.byte 0x01 # Abbrev code
.byte 0x11 # DW_TAG_compile_unit
.byte 0x00 # DW_CHILDREN_no
.byte 0x25 # DW_AT_producer
.byte 0x0e # DW_FORM_strp
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x10 # DW_AT_stmt_list
.byte 0x17 # DW_FORM_sec_offset
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x02 # Abbrev code
.byte 0x41 # DW_TAG_type_unit
.byte 0x01 # DW_CHILDREN_yes
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x03 # Abbrev code
.byte 0x13 # DW_TAG_structure_type
.byte 0x00 # DW_CHILDREN_no (no members)
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x00 # EOM(3)
# And a .dwo copy for the .dwo sections.
.section .debug_abbrev.dwo,"e",@progbits
.byte 0x01 # Abbrev code
.byte 0x11 # DW_TAG_compile_unit
.byte 0x00 # DW_CHILDREN_no
.byte 0x25 # DW_AT_producer
.byte 0x0e # DW_FORM_strp
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x10 # DW_AT_stmt_list
.byte 0x17 # DW_FORM_sec_offset
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x02 # Abbrev code
.byte 0x41 # DW_TAG_type_unit
.byte 0x01 # DW_CHILDREN_yes
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x03 # Abbrev code
.byte 0x13 # DW_TAG_structure_type
.byte 0x00 # DW_CHILDREN_no (no members)
.byte 0x03 # DW_AT_name
.byte 0x0e # DW_FORM_strp
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x00 # EOM(3)
.section .debug_info,"",@progbits
# CHECK-LABEL: .debug_info contents:
# DWARF v4 CU header. V4 CU headers all look the same so we do only one.
.long CU_4_end-CU_4_version # Length of Unit
CU_4_version:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
# The compile-unit DIE, with DW_AT_producer, DW_AT_name, DW_AT_stmt_list.
.byte 1
.long str_producer
.long str_CU_4
.long LH_4_start
.byte 0 # NULL
CU_4_end:
# CHECK: 0x00000000: Compile Unit: length = 0x00000015, format = DWARF32, version = 0x0004, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x00000019)
# CHECK: 0x0000000b: DW_TAG_compile_unit
# DWARF v5 normal CU header.
.long CU_5_end-CU_5_version # Length of Unit
CU_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
# The compile-unit DIE, with DW_AT_producer, DW_AT_name, DW_AT_stmt_list.
.byte 1
.long str_producer
.long str_CU_5
.long LH_5_start
.byte 0 # NULL
CU_5_end:
# CHECK: 0x00000019: Compile Unit: length = 0x00000016, format = DWARF32, version = 0x0005, unit_type = DW_UT_compile, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x00000033)
# CHECK: 0x00000025: DW_TAG_compile_unit
.section .debug_info.dwo,"e",@progbits
# CHECK-LABEL: .debug_info.dwo
# DWARF v5 split CU header.
.long CU_split_5_end-CU_split_5_version # Length of Unit
CU_split_5_version:
.short 5 # DWARF version number
.byte 5 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev.dwo # Offset Into Abbrev. Section
.quad 0x5a # DWO ID
# The split compile-unit DIE, with DW_AT_producer, DW_AT_name, DW_AT_stmt_list.
.byte 1
.long dwo_producer
.long dwo_CU_5
.long dwo_LH_5_start
.byte 0 # NULL
CU_split_5_end:
# CHECK: 0x00000000: Compile Unit: length = 0x0000001e, format = DWARF32, version = 0x0005, unit_type = DW_UT_split_compile, abbr_offset = 0x0000, addr_size = 0x08, DWO_id = 0x000000000000005a (next unit at 0x00000022)
# CHECK: 0x00000014: DW_TAG_compile_unit
# CHECK-NEXT: DW_AT_producer {{.*}} "Handmade DWO producer"
# CHECK-NEXT: DW_AT_name {{.*}} "V5_dwo_compile_unit"
# Now a DWARF v5 type unit, which goes in a .debug_info.dwo comdat.
# Note there will not be another ".debug_info.dwo contents:" line, even though
# there is a separate ELF section header; it's dumped along with the previous
# unit as if they were in a single section.
.section .debug_info.dwo,"Ge",@progbits,5555,comdat
# CHECK-NOT: .debug_info.dwo
# DWARF v5 split type unit header.
TU_split_5_start:
.long TU_split_5_end-TU_split_5_version # Length of Unit
TU_split_5_version:
.short 5 # DWARF version number
.byte 6 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev.dwo # Offset Into Abbrev. Section
.quad 0x8899aabbccddeeff # Type Signature
.long TU_split_5_type-TU_split_5_start # Type offset
# The type-unit DIE, which has a name.
.byte 2
.long dwo_TU_5
# The type DIE, which has a name.
TU_split_5_type:
.byte 3
.long dwo_TU_5
.byte 0 # NULL
.byte 0 # NULL
TU_split_5_end:
# CHECK: 0x00000000: Type Unit: length = 0x00000020, format = DWARF32, version = 0x0005, unit_type = DW_UT_split_type, abbr_offset = 0x0000, addr_size = 0x08, name = 'V5_split_type_unit', type_signature = 0x8899aabbccddeeff, type_offset = 0x001d (next unit at 0x00000024)
# CHECK: 0x00000018: DW_TAG_type_unit
.section .debug_types,"",@progbits
# CHECK-LABEL: .debug_types contents:
# DWARF v4 Type unit header. Normal/split are identical so we do only one.
TU_4_start:
.long TU_4_end-TU_4_version # Length of Unit
TU_4_version:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.quad 0x0011223344556677 # Type Signature
.long TU_4_type-TU_4_start # Type offset
# The type-unit DIE, which has a name.
.byte 2
.long str_TU_4
# The type DIE, which has a name.
TU_4_type:
.byte 3
.long str_TU_4
.byte 0 # NULL
.byte 0 # NULL
TU_4_end:
# CHECK: 0x00000000: Type Unit: length = 0x0000001f, format = DWARF32, version = 0x0004, abbr_offset = 0x0000, addr_size = 0x08, name = 'V4_type_unit', type_signature = 0x0011223344556677, type_offset = 0x001c (next unit at 0x00000023)
# CHECK: 0x00000017: DW_TAG_type_unit
.section .debug_line,"",@progbits
# CHECK-LABEL: .debug_line contents:
# DWARF v4 line-table header.
LH_4_start:
.long LH_4_end-LH_4_version # Length of Unit
LH_4_version:
.short 4 # DWARF version number
.long LH_4_header_end-LH_4_params # Length of Prologue
LH_4_params:
.byte 1 # Minimum Instruction Length
.byte 1 # Maximum Operations per Instruction
.byte 1 # Default is_stmt
.byte -5 # Line Base
.byte 14 # Line Range
.byte 13 # Opcode Base
.byte 0 # Standard Opcode Lengths
.byte 1
.byte 1
.byte 1
.byte 1
.byte 0
.byte 0
.byte 0
.byte 1
.byte 0
.byte 0
.byte 1
# Directory table
.asciz "Directory4a"
.asciz "Directory4b"
.byte 0
# File table
.asciz "File4a" # File name 1
.byte 1 # Directory index 1
.byte 0x41 # Timestamp 1
.byte 0x42 # File Size 1
.asciz "File4b" # File name 2
.byte 0 # Directory index 2
.byte 0x43 # Timestamp 2
.byte 0x44 # File Size 2
.byte 0 # End of list
LH_4_header_end:
# Line number program, which is empty.
LH_4_end:
# CHECK: Line table prologue:
# CHECK: version: 4
# CHECK-NOT: address_size
# CHECK-NOT: seg_select_size
# CHECK: max_ops_per_inst: 1
# CHECK: include_directories[ 1] = "Directory4a"
# CHECK: include_directories[ 2] = "Directory4b"
# CHECK-NOT: include_directories
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: "File4a"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: mod_time: 0x00000041
# CHECK-NEXT: length: 0x00000042
# CHECK: file_names[ 2]:
# CHECK-NEXT: name: "File4b"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: mod_time: 0x00000043
# CHECK-NEXT: length: 0x00000044
# CHECK-NOT: file_names
# DWARF v5 line-table header.
LH_5_start:
.long LH_5_end-LH_5_version # Length of Unit
LH_5_version:
.short 5 # DWARF version number
.byte 8 # Address Size
.byte 0 # Segment Selector Size
.long LH_5_header_end-LH_5_params # Length of Prologue
LH_5_params:
.byte 1 # Minimum Instruction Length
.byte 1 # Maximum Operations per Instruction
.byte 1 # Default is_stmt
.byte -5 # Line Base
.byte 14 # Line Range
.byte 13 # Opcode Base
.byte 0 # Standard Opcode Lengths
.byte 1
.byte 1
.byte 1
.byte 1
.byte 0
.byte 0
.byte 0
.byte 1
.byte 0
.byte 0
.byte 1
# Directory table format
.byte 1 # One element per directory entry
.byte 1 # DW_LNCT_path
.byte 0x0e # DW_FORM_strp (-> .debug_str)
# Directory table entries
.byte 2 # Two directories
.long str_LT_5a
.long str_LT_5b
# File table format
.byte 3 # Three elements per file entry
.byte 1 # DW_LNCT_path
.byte 0x1f # DW_FORM_line_strp (-> .debug_line_str)
.byte 2 # DW_LNCT_directory_index
.byte 0x0b # DW_FORM_data1
.byte 5 # DW_LNCT_MD5
.byte 0x1e # DW_FORM_data16
# File table entries
.byte 2 # Two files
.long lstr_LT_5a
.byte 0
.quad 0x7766554433221100
.quad 0xffeeddccbbaa9988
.long lstr_LT_5b
.byte 1
.quad 0x8899aabbccddeeff
.quad 0x0011223344556677
LH_5_header_end:
# Line number program, which is empty.
LH_5_end:
# CHECK: Line table prologue:
# CHECK: version: 5
# CHECK: address_size: 8
# CHECK: seg_select_size: 0
# CHECK: max_ops_per_inst: 1
# Mixing .debug_str (here) with .debug_line_str (in file_names) is not
# something a producer would do, but both are legal and we want to test them.
# CHECK: include_directories[ 0] = .debug_str[0x00000045] = "Directory5a"
# CHECK: include_directories[ 1] = .debug_str[0x00000051] = "Directory5b"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: .debug_line_str[0x00000000] = "File5a"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: md5_checksum: 00112233445566778899aabbccddeeff
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: .debug_line_str[0x00000007] = "File5b"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: md5_checksum: ffeeddccbbaa99887766554433221100
# CHECK-NOT: file_names
.section .debug_line_str,"MS",@progbits,1
lstr_LT_5a:
.asciz "File5a"
lstr_LT_5b:
.asciz "File5b"
.section .debug_line.dwo,"e",@progbits
# CHECK-LABEL: .debug_line.dwo
# DWARF v5 DWO line-table header.
dwo_LH_5_start:
.long dwo_LH_5_end-dwo_LH_5_version # Length of Unit
dwo_LH_5_version:
.short 5 # DWARF version number
.byte 8 # Address Size
.byte 0 # Segment Selector Size
.long dwo_LH_5_header_end-dwo_LH_5_params # Length of Prologue
dwo_LH_5_params:
.byte 1 # Minimum Instruction Length
.byte 1 # Maximum Operations per Instruction
.byte 1 # Default is_stmt
.byte -5 # Line Base
.byte 14 # Line Range
.byte 13 # Opcode Base
.byte 0 # Standard Opcode Lengths
.byte 1
.byte 1
.byte 1
.byte 1
.byte 0
.byte 0
.byte 0
.byte 1
.byte 0
.byte 0
.byte 1
# Directory table format
.byte 1 # One element per directory entry
.byte 1 # DW_LNCT_path
.byte 0x0e # DW_FORM_strp (-> .debug_str.dwo)
# Directory table entries
.byte 2 # Two directories
.long dwo_LT_5a
.long dwo_LT_5b
# File table format
.byte 4 # Four elements per file entry
.byte 1 # DW_LNCT_path
.byte 0x08 # DW_FORM_string
.byte 2 # DW_LNCT_directory_index
.byte 0x0b # DW_FORM_data1
.byte 3 # DW_LNCT_timestamp
.byte 0x0f # DW_FORM_udata
.byte 4 # DW_LNCT_size
.byte 0x0f # DW_FORM_udata
# File table entries
.byte 2 # Two files
.asciz "DWOFile5a"
.byte 0
.byte 0x15
.byte 0x25
.asciz "DWOFile5b"
.byte 1
.byte 0x35
.byte 0x45
dwo_LH_5_header_end:
# Line number program, which is empty.
dwo_LH_5_end:
# CHECK: Line table prologue:
# CHECK: version: 5
# CHECK: address_size: 8
# CHECK: seg_select_size: 0
# CHECK: max_ops_per_inst: 1
# CHECK: include_directories[ 0] = .debug_str[0x0000003d] = "DWODirectory5a"
# CHECK: include_directories[ 1] = .debug_str[0x0000004c] = "DWODirectory5b"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: "DWOFile5a"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: mod_time: 0x00000015
# CHECK-NEXT: length: 0x00000025
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: "DWOFile5b"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: mod_time: 0x00000035
# CHECK-NEXT: length: 0x00000045
# CHECK-NOT: file_names
# VERIFY: Verifying .debug_types
# VERIFY: No errors.