1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
| # Test object to verify dwarfdump handles a DWARF-64 v5 line header.
# FIXME: Make the other headers DWARF-64 also.
# FIXME: Add variants for earlier DWARF versions.
# RUN: llvm-mc -triple x86_64-unknown-linux --defsym ELF=0 \
# RUN: -filetype=obj -o - %s | llvm-dwarfdump -v - | FileCheck %s
# RUN: llvm-mc -triple x86_64-apple-darwin --defsym MACHO=0 \
# RUN: -filetype=obj -o - %s | llvm-dwarfdump -v - | FileCheck %s
.ifdef ELF
.section .debug_str,"MS",@progbits,1
.endif
.ifdef MACHO
.section __DWARF,__debug_str,regular,debug
.endif
str_producer:
.asciz "Handmade DWARF producer"
str_CU_5:
.asciz "V5_compile_unit"
str_LT_5a:
.asciz "Directory5a"
str_LT_5b:
.asciz "Directory5b"
.ifdef ELF
.section .debug_abbrev,"",@progbits
.endif
.ifdef MACHO
.section __DWARF,__debug_abbrev,regular,debug
.endif
abbrev:
.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)
.ifdef ELF
.section .debug_info,"",@progbits
.endif
.ifdef MACHO
.section __DWARF,__debug_info,regular,debug
.endif
# DWARF-32 v5 normal CU header.
Lset0 = CU_5_end-CU_5_version # Length of Unit
.long Lset0
CU_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.ifdef ELF
.long abbrev # Offset Into Abbrev. Section
.endif
.ifdef MACHO
.long 0
.endif
# The compile-unit DIE, with DW_AT_producer, DW_AT_name, DW_AT_stmt_list.
.byte 1
.long str_producer
.long str_CU_5
.ifdef ELF
.long LH_5_start
.endif
.ifdef MACHO
.long 0
.endif
.byte 0 # NULL
CU_5_end:
# CHECK-LABEL: .debug_info contents:
# CHECK: 0x00000000: Compile Unit: length = 0x00000016 version = 0x0005 unit_type = DW_UT_compile abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x0000001a)
# CHECK: 0x0000000c: DW_TAG_compile_unit
# CHECK-NEXT: DW_AT_producer {{.*}} "Handmade DWARF producer"
# CHECK-NEXT: DW_AT_name {{.*}} "V5_compile_unit"
# CHECK-NEXT: DW_AT_stmt_list {{.*}} (0x00000000)
.ifdef ELF
.section .debug_line,"",@progbits
.endif
.ifdef MACHO
.section __DWARF,__debug_line,regular,debug
.endif
# DWARF-64 v5 line-table header.
LH_5_start:
.long -1
Lset1 = LH_5_end-LH_5_version # Length of Unit
.quad Lset1
LH_5_version:
.short 5 # DWARF version number
.byte 8 # Address Size
.byte 0 # Segment Selector Size
Lset2 = LH_5_header_end-LH_5_params # Length of Prologue
.quad Lset2
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
.quad str_LT_5a
.quad str_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 "File5a"
.byte 0
.byte 0x51
.byte 0x52
.asciz "File5b"
.byte 1
.byte 0x53
.byte 0x54
LH_5_header_end:
# Line number program, which is empty.
LH_5_end:
# CHECK-LABEL: .debug_line contents:
# CHECK: Line table prologue:
# CHECK: total_length: 0x00000050
# CHECK: version: 5
# CHECK: address_size: 8
# CHECK: seg_select_size: 0
# CHECK: prologue_length: 0x00000044
# CHECK: max_ops_per_inst: 1
# CHECK: include_directories[ 0] = .debug_str[0x00000028] = "Directory5a"
# CHECK: include_directories[ 1] = .debug_str[0x00000034] = "Directory5b"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: "File5a"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: mod_time: 0x00000051
# CHECK-NEXT: length: 0x00000052
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: "File5b"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: mod_time: 0x00000053
# CHECK-NEXT: length: 0x00000054
# CHECK-NOT: file_names
|