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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %s -o %tmain.o
# RUN: %clang %cflags -dwarf-5 %tmain.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.bolt -update-debug-sections
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe | FileCheck --check-prefix=PRECHECK %s
# RUN: llvm-dwarfdump --show-form --verbose --debug-addr %t.bolt > %t.txt
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt >> %t.txt
# This test checks that we correctly handle DW_AT_low_pc [DW_FORM_addrx] that is part of DW_TAG_label.
# PRECHECK: version = 0x0005
# PRECHECK: DW_TAG_label
# PRECHECK-NEXT: DW_AT_name
# PRECHECK-NEXT: DW_AT_decl_file
# PRECHECK-NEXT: DW_AT_decl_line
# PRECHECK-NEXT:DW_AT_low_pc [DW_FORM_addrx] (indexed (00000001)
# PRECHECK: DW_TAG_label
# PRECHECK-NEXT: DW_AT_name
# PRECHECK-NEXT: DW_AT_decl_file
# PRECHECK-NEXT: DW_AT_decl_line
# PRECHECK-NEXT:DW_AT_low_pc [DW_FORM_addrx] (indexed (00000002)
# POSTCHECK: Addrs: [
# POSTCHECK-NEXT: 0x
# POSTCHECK-NEXT: 0x
# POSTCHECK-NEXT: 0x[[#%.16x,ADDR:]]
# POSTCHECK-NEXT: 0x[[#%.16x,ADDR2:]]
# POSTCHECK: version = 0x0005
# POSTCHECK: DW_TAG_label
# POSTCHECK-NEXT: DW_AT_name
# POSTCHECK-NEXT: DW_AT_decl_file
# POSTCHECK-NEXT: DW_AT_decl_line
# POSTCHECK-NEXT:
# POSTCHECK-NEXT:DW_AT_low_pc [DW_FORM_addrx] (indexed (00000002)
# POSTCHECK-SAME: [0x[[#ADDR]]
# POSTCHECK: DW_TAG_label
# POSTCHECK-NEXT: DW_AT_name
# POSTCHECK-NEXT: DW_AT_decl_file
# POSTCHECK-NEXT: DW_AT_decl_line
# POSTCHECK-NEXT:
# POSTCHECK-NEXT:DW_AT_low_pc [DW_FORM_addrx] (indexed (00000003)
# POSTCHECK-SAME: [0x[[#ADDR2]]
# clang++ main.cpp -g -S
# int main() {
# int a = 4;
# if (a == 5)
# goto LABEL1;
# else
# goto LABEL2;
# LABEL1:a++;
# LABEL2:a--;
# return 0;
# }
.text
.file "main.cpp"
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.file 0 "/testLabel" "main.cpp" md5 0xa0bd66020d06f1303de7008e3c542050
.loc 0 1 0 # main.cpp:1:0
.cfi_startproc
# %bb.0: # %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
movl $0, -4(%rbp)
.Ltmp0:
.loc 0 2 7 prologue_end # main.cpp:2:7
movl $4, -8(%rbp)
.Ltmp1:
.loc 0 3 9 # main.cpp:3:9
cmpl $5, -8(%rbp)
.Ltmp2:
.loc 0 3 7 is_stmt 0 # main.cpp:3:7
jne .LBB0_2
# %bb.1: # %if.then
.Ltmp3:
.loc 0 4 5 is_stmt 1 # main.cpp:4:5
jmp .LBB0_3
.LBB0_2: # %if.else
.loc 0 6 5 # main.cpp:6:5
jmp .LBB0_4
.Ltmp4:
.LBB0_3: # %LABEL1
#DEBUG_LABEL: main:LABEL1
.loc 0 7 11 # main.cpp:7:11
movl -8(%rbp), %eax
addl $1, %eax
movl %eax, -8(%rbp)
.LBB0_4: # %LABEL2
.Ltmp5:
#DEBUG_LABEL: main:LABEL2
.loc 0 8 11 # main.cpp:8:11
movl -8(%rbp), %eax
addl $-1, %eax
movl %eax, -8(%rbp)
.loc 0 9 3 # main.cpp:9:3
xorl %eax, %eax
popq %rbp
.cfi_def_cfa %rsp, 8
retq
.Ltmp6:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 10 # DW_TAG_label
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 1 # Abbrev [1] 0xc:0x41 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 33 # DW_AT_language
.byte 1 # DW_AT_name
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.long .Lline_table_start0 # DW_AT_stmt_list
.byte 2 # DW_AT_comp_dir
.byte 0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.byte 2 # Abbrev [2] 0x23:0x25 DW_TAG_subprogram
.byte 0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 86
.byte 3 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 72 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x32:0xb DW_TAG_variable
.byte 2 # DW_AT_location
.byte 145
.byte 120
.byte 5 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.long 72 # DW_AT_type
.byte 4 # Abbrev [4] 0x3d:0x5 DW_TAG_label
.byte 6 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.byte 1 # DW_AT_low_pc
.byte 4 # Abbrev [4] 0x42:0x5 DW_TAG_label
.byte 7 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 8 # DW_AT_decl_line
.byte 2 # DW_AT_low_pc
.byte 0 # End Of Children Mark
.byte 5 # Abbrev [5] 0x48:0x4 DW_TAG_base_type
.byte 4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_str_offsets,"",@progbits
.long 36 # Length of String Offsets Set
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 15.0.0" # string offset=0
.Linfo_string1:
.asciz "main.cpp" # string offset=134
.Linfo_string2:
.asciz "/testLabel" # string offset=143
.Linfo_string3:
.asciz "main" # string offset=190
.Linfo_string4:
.asciz "int" # string offset=195
.Linfo_string5:
.asciz "a" # string offset=199
.Linfo_string6:
.asciz "LABEL1" # string offset=201
.Linfo_string7:
.asciz "LABEL2" # string offset=208
.section .debug_str_offsets,"",@progbits
.long .Linfo_string0
.long .Linfo_string1
.long .Linfo_string2
.long .Linfo_string3
.long .Linfo_string4
.long .Linfo_string5
.long .Linfo_string6
.long .Linfo_string7
.section .debug_addr,"",@progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
.Ldebug_addr_start0:
.short 5 # DWARF version number
.byte 8 # Address size
.byte 0 # Segment selector size
.Laddr_table_base0:
.quad .Lfunc_begin0
.quad .Ltmp4
.quad .Ltmp5
.Ldebug_addr_end0:
.ident "clang version 15.0.0"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:
|
