debug-line.yaml
32 KB
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
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
## Test that yaml2obj emits .debug_line section.
## a) Generate the .debug_line section from the "DWARF" entry.
## Generate and verify a little endian DWARF32 .debug_line section.
# RUN: yaml2obj --docnum=1 -DENDIAN=ELFDATA2LSB %s -o %t1.le.o
# RUN: llvm-readobj --sections --section-data %t1.le.o | \
# RUN: FileCheck %s -DSIZE=50 -DADDRALIGN=1 --check-prefixes=SHDR,DWARF-LE-CONTENT
# SHDR: Index: 1
# SHDR-NEXT: Name: .debug_line (1)
# SHDR-NEXT: Type: SHT_PROGBITS (0x1)
# SHDR-NEXT: Flags [ (0x0)
# SHDR-NEXT: ]
# SHDR-NEXT: Address: 0x0
# SHDR-NEXT: Offset: 0x40
# SHDR-NEXT: Size: [[SIZE]]
# SHDR-NEXT: Link: 0
# SHDR-NEXT: Info: 0
# SHDR-NEXT: AddressAlignment: [[ADDRALIGN]]
# SHDR-NEXT: EntrySize: 0
# DWARF-LE-CONTENT-NEXT: SectionData (
# DWARF-LE-CONTENT-NEXT: 0000: 70000000 02003200 00000102 03040501
## | | | | | | | | |
## | | | | | | | | +- standard_opcode_lengths[DW_LNS_copy] (1-byte) 0x01
## | | | | | | | +- opcode_base (1-byte) 0x05
## | | | | | | +- line_range (1-byte) 0x04
## | | | | | +- line_base (signed 1-byte) 0x03
## | | | | +- default_is_stmt (1-byte) 0x02
## | | | +- minimum_instruction_length (1-byte) 0x01
## | | +-------- prologue_length (4-byte) 50
## | +--- version (2-byte) 0x02
## +------- unit_length (4-byte) 0x70
##
# DWARF-LE-CONTENT-NEXT: 0010: 02030405 06070809 64697231 00646972
## | | | | | | | | | |
## | | | | | | | | | +----- include_directories[2] "dir2\0"
## | | | | | | | | +---------- include_directories[1] "dir1\0"
## | | | | | | | +- standard_opcode_lengths[DW_LNS_fixed_advance_pc] (1-byte) 0x09
## | | | | | | +- standard_opcode_lengths[DW_LNS_const_add_pc] (1-byte) 0x08
## | | | | | +- standard_opcode_lengths[DW_LNS_set_basic_block] (1-byte) 0x07
## | | | | +- standard_opcode_lengths[DW_LNS_negate_stmt] (1-byte) 0x06
## | | | +- standard_opcode_lengths[DW_LNS_set_column] (1-byte) 0x05
## | | +- standard_opcode_lengths[DW_LNS_set_file] (1-byte) 0x04
## | +- standard_opcode_lengths[DW_LNS_advance_line] (1-byte) 0x03
## +- standard_opcode_lengths[DW_LNS_advance_pc] (1-byte) 0x02
##
# DWARF-LE-CONTENT-NEXT: 0020: 32000061 2E630001 0203622E 63000203
## | | | | | | | | |
## | | | | | | | | +- ModTime (ULEB128) 0x03
## | | | | | | | +- DirIndex (ULEB128) 0x02
## | | | | | | +-------- file_names[2] "b.c\0"
## | | | | | +- Length (ULEB128) 0x03
## | | | | +- ModTime (ULEB128) 0x02
## | | | +- DirIndex (ULEB128) 0x01
## | | +-------- file_names[1] "a.c\0"
## | +- terminating entry (1-byte) 0x00
## +--- the last two bytes of "dir2\0"
##
# DWARF-LE-CONTENT-NEXT: 0030: 0400
## | |
## | +- terminating entry (1-byte) 0x00
## +- Length (ULEB128) 0x04
# DWARF-LE-CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: [[ENDIAN]]
Type: ET_EXEC
DWARF:
debug_line:
- Length: 0x70
Version: 2
PrologueLength: 50
MinInstLength: 1
DefaultIsStmt: 2
LineBase: 3
LineRange: 4
OpcodeBase: 5
StandardOpcodeLengths: [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
IncludeDirs:
- dir1
- dir2
Files:
- Name: "a.c"
DirIdx: 1
ModTime: 2
Length: 3
- Name: "b.c"
DirIdx: 2
ModTime: 3
Length: 4
## Generate and verify a big endian DWARF32 .debug_line section.
# RUN: yaml2obj --docnum=1 -DENDIAN=ELFDATA2MSB %s -o %t1.be.o
# RUN: llvm-readobj --sections --section-data %t1.be.o | \
# RUN: FileCheck %s -DSIZE=50 -DADDRALIGN=1 --check-prefixes=SHDR,DWARF-BE-CONTENT
# DWARF-BE-CONTENT-NEXT: SectionData (
# DWARF-BE-CONTENT-NEXT: 0000: 00000070 00020000 00320102 03040501
## | | | | | | | | |
## | | | | | | | | +- standard_opcode_lengths[DW_LNS_copy] (1-byte) 0x01
## | | | | | | | +- opcode_base (1-byte) 0x05
## | | | | | | +- line_range (1-byte) 0x04
## | | | | | +- line_base (signed 1-byte) 0x03
## | | | | +- default_is_stmt (1-byte) 0x02
## | | | +- minimum_instruction_length (1-byte) 0x01
## | | +-------- prologue_length (4-byte) 50
## | +--- version (2-byte) 0x02
## +------- unit_length (4-byte) 0x70
##
# DWARF-BE-CONTENT-NEXT: 0010: 02030405 06070809 64697231 00646972
## | | | | | | | | | |
## | | | | | | | | | +----- include_directories[2] "dir2\0"
## | | | | | | | | +---------- include_directories[1] "dir1\0"
## | | | | | | | +- standard_opcode_lengths[DW_LNS_fixed_advance_pc] (1-byte) 0x09
## | | | | | | +- standard_opcode_lengths[DW_LNS_const_add_pc] (1-byte) 0x08
## | | | | | +- standard_opcode_lengths[DW_LNS_set_basic_block] (1-byte) 0x07
## | | | | +- standard_opcode_lengths[DW_LNS_negate_stmt] (1-byte) 0x06
## | | | +- standard_opcode_lengths[DW_LNS_set_column] (1-byte) 0x05
## | | +- standard_opcode_lengths[DW_LNS_set_file] (1-byte) 0x04
## | +- standard_opcode_lengths[DW_LNS_advance_line] (1-byte) 0x03
## +- standard_opcode_lengths[DW_LNS_advance_pc] (1-byte) 0x02
##
# DWARF-BE-CONTENT-NEXT: 0020: 32000061 2E630001 0203622E 63000203
## | | | | | | | | |
## | | | | | | | | +- ModTime (ULEB128) 0x03
## | | | | | | | +- DirIndex (ULEB128) 0x02
## | | | | | | +-------- file_names[2] "b.c\0"
## | | | | | +- Length (ULEB128) 0x03
## | | | | +- ModTime (ULEB128) 0x02
## | | | +- DirIndex (ULEB128) 0x01
## | | +-------- file_names[1] "a.c\0"
## | +- terminating entry (1-byte) 0x00
## +--- the last two bytes of "dir2\0"
##
# DWARF-BE-CONTENT-NEXT: 0030: 0400
## | |
## | +- terminating entry (1-byte) 0x00
## +- Length (ULEB128) 0x04
# DWARF-BE-CONTENT-NEXT: )
## b) Generate the .debug_line section from raw section content.
# RUN: yaml2obj --docnum=2 %s -o %t2.o
# RUN: llvm-readobj --sections --section-data %t2.o | \
# RUN: FileCheck %s -DSIZE=3 -DADDRALIGN=0 --check-prefixes=SHDR,ARBITRARY-CONTENT
# ARBITRARY-CONTENT: SectionData (
# ARBITRARY-CONTENT-NEXT: 0000: 112233 |."3|
# ARBITRARY-CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_PROGBITS
Content: "112233"
## c) Generate the .debug_line section when the "Size" is specified.
# RUN: yaml2obj --docnum=3 %s -o %t3.o
# RUN: llvm-readobj --sections --section-data %t3.o | \
# RUN: FileCheck %s -DSIZE=16 -DADDRALIGN=0 --check-prefixes=SHDR,SIZE
# SIZE: SectionData (
# SIZE-NEXT: 0000: 00000000 00000000 00000000 00000000 |................|
# SIZE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_PROGBITS
Size: 0x10
## d) Test that yaml2obj emits an error message when both the "Size" and the
## "debug_line" entry are specified at the same time.
# RUN: not yaml2obj --docnum=4 %s 2>&1 | FileCheck %s --check-prefix=ERROR
# ERROR: yaml2obj: error: cannot specify section '.debug_line' contents in the 'DWARF' entry and the 'Content' or 'Size' in the 'Sections' entry at the same time
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_PROGBITS
Size: 0x10
DWARF:
debug_line:
- Length: 0x70
Version: 2
PrologueLength: 50
MinInstLength: 1
DefaultIsStmt: 1
LineBase: 1
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: []
## e) Test that yaml2obj emits an error message when both the "Content" and the
## "debug_line" entry are specified at the same time.
# RUN: not yaml2obj --docnum=5 %s 2>&1 | FileCheck %s --check-prefix=ERROR
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_PROGBITS
Content: "00"
DWARF:
debug_line:
- Length: 0x70
Version: 2
PrologueLength: 50
MinInstLength: 1
DefaultIsStmt: 1
LineBase: 1
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: []
## f) Test that all the properties can be overridden by the section header when
## the "debug_line" entry doesn't exist.
# RUN: yaml2obj --docnum=6 %s -o %t6.o
# RUN: llvm-readelf --sections %t6.o | FileCheck %s --check-prefix=OVERRIDDEN
# OVERRIDDEN: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# OVERRIDDEN: [ 1] .debug_line STRTAB 0000000000002020 000050 000011 01 A 2 1 2
# OVERRIDDEN-NEXT: [ 2] .sec STRTAB 0000000000000000 000061 000000 00 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_STRTAB # SHT_PROGBITS by default.
Flags: [SHF_ALLOC] # 0 by default.
Link: .sec # 0 by default.
EntSize: 1 # 0 by default.
Info: 1 # 0 by default.
AddressAlign: 2 # 0 by default.
Address: 0x2020 # 0x00 by default.
Offset: 0x50 # 0x40 for the first section.
Size: 0x11 # Set the "Size" so that we can reuse the check tag "OVERRIDDEN".
- Name: .sec # Linked by .debug_line.
Type: SHT_STRTAB
## g) Test that all the properties can be overridden by the section header when
## the "debug_line" entry exists.
# RUN: yaml2obj --docnum=7 %s -o %t7.o
# RUN: llvm-readelf --sections %t7.o | FileCheck %s --check-prefix=OVERRIDDEN
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_line
Type: SHT_STRTAB # SHT_PROGBITS by default.
Flags: [SHF_ALLOC] # 0 by default.
Link: .sec # 0 by default.
EntSize: 1 # 0 by default.
Info: 1 # 0 by default.
AddressAlign: 2 # 1 by default.
Address: 0x2020 # 0x00 by default.
Offset: 0x50 # 0x40 for the first section.
- Name: .sec # Linked by .debug_line.
Type: SHT_STRTAB
DWARF:
debug_line:
- Length: 0x70
Version: 2
PrologueLength: 50
MinInstLength: 1
DefaultIsStmt: 1
LineBase: 1
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: []
## h) Test that the address size is inferred from the target machine.
# RUN: yaml2obj --docnum=8 -DBITS=64 -DADDR=0x1234567890abcdef %s -o %t8.64-bit.o
# RUN: llvm-readelf --hex-dump=.debug_line %t8.64-bit.o | \
# RUN: FileCheck %s --check-prefix=ADDRSIZE -DADDR="efcdab90 78563412"
# ADDRSIZE: Hex dump of section '.debug_line':
# ADDRSIZE-NEXT: 0x00000000 34120000 02003412 00000101 010e0d00 4.....4.........
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^-------- header_length (4-byte)
## ^- minimum_instruction_length (1-byte)
## ^- default_is_stmt (1-byte)
## ^- line_base (1-byte)
## ^- line_range (1-byte)
## ^- opcode_base (1-byte)
## ^- null byte for terminating include_directories
# ADDRSIZE-NEXT: 0x00000010 00000902 [[ADDR]]
## ^- null byte for terminating file_names
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x09
## ^- DW_LNE_set_address
## ^------- address
# RUN: yaml2obj --docnum=8 -DBITS=32 -DADDR=0x12345678 %s -o %t8.32-bit.o
# RUN: llvm-readelf --hex-dump=.debug_line %t8.32-bit.o | \
# RUN: FileCheck %s --check-prefix=ADDRSIZE -DADDR="78563412"
--- !ELF
FileHeader:
Class: ELFCLASS[[BITS]]
Data: ELFDATA2LSB
Type: ET_EXEC
DWARF:
debug_line:
- Length: 0x1234
Version: 2
PrologueLength: 0x1234
MinInstLength: 1
DefaultIsStmt: 1
LineBase: 1
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: []
Opcodes:
- Opcode: DW_LNS_extended_op
ExtLen: 9
SubOpcode: DW_LNE_set_address
Data: [[ADDR]]
## i) Test that yaml2obj is able to emit correct opcodes.
# RUN: yaml2obj --docnum=9 %s -o %t9.o
# RUN: llvm-readelf --hex-dump=.debug_line %t9.o | FileCheck %s --check-prefix=OPCODES
# OPCODES: Hex dump of section '.debug_line':
# OPCODES-NEXT: 0x00000000 34120000 04003412 00000101 01010e0d 4.....4.........
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^-------- header_length (4-byte)
## ^- minimum_instruction_length (1-byte)
## ^- maximum_operations_per_instruction (1-byte)
## ^- default_is_stmt (1-byte)
## ^- line_base (1-byte)
## ^- line_range (1-byte)
## ^- opcode_base (1-byte)
# OPCODES-NEXT: 0x00000010 00000102 b42403b4 2404b424 05b42406 .....$..$..$..$.
## ^- null byte for terminating include_directories
## ^- null byte for terminating file_names
## ^- DW_LNS_copy (1-byte)
## ^- DW_LNS_advance_pc
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LNS_advance_line
## ^---- operands[0] (SLEB128) 0x1234
## ^- DW_LNS_set_file
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LNS_set_column
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LNS_negate_stmt
# OPCODES-NEXT: 0x00000020 07080934 120a0b0c b4240009 01000902 ...4.....$......
## ^- DW_LNS_set_basic_block
## ^- DW_LNS_const_add_pc
## ^- DW_LNS_fixed_advance_pc
## ^---- operands[0] (uhalf, 2-byte)
## ^- DW_LNS_set_prologue_end
## ^- DW_LNS_set_epilogue_begin
## ^- DW_LNS_set_isa
## ^--- operands[0] (ULEB128) 0x1234
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x09
## ^- DW_LNE_end_sequence
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x09
## ^- DW_LNE_set_address
# OPCODES-NEXT: 0x00000030 34120000 00000000 00090361 62636400 4..........abcd.
## ^---------------- operands[0] (8-byte)
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x09
## ^- DW_LNE_define_file
## ^---------- operands[0] "abcd\0"
# OPCODES-NEXT: 0x00000040 b424b424 b4240009 04b424 .$.$.$....$
## ^--- operands[1] (ULEB128) 0x1234
## ^--- operands[2] (ULEB128) 0x1234
## ^--- operands[3] (ULEB128) 0x1234
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x09
## ^- DW_LNE_set_discriminator
## ^--- operands[0] (ULEB128) 0x1234
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
DWARF:
debug_line:
- Length: 0x1234
Version: 4
PrologueLength: 0x1234
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 1
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: []
Opcodes:
- Opcode: DW_LNS_copy
- Opcode: DW_LNS_advance_pc
Data: 0x1234
- Opcode: DW_LNS_advance_line
SData: 0x1234
- Opcode: DW_LNS_set_file
Data: 0x1234
- Opcode: DW_LNS_set_column
Data: 0x1234
- Opcode: DW_LNS_negate_stmt
- Opcode: DW_LNS_set_basic_block
- Opcode: DW_LNS_const_add_pc
- Opcode: DW_LNS_fixed_advance_pc
Data: 0x1234
- Opcode: DW_LNS_set_prologue_end
- Opcode: DW_LNS_set_epilogue_begin
- Opcode: DW_LNS_set_isa
Data: 0x1234
- Opcode: DW_LNS_extended_op
ExtLen: 0x09
SubOpcode: DW_LNE_end_sequence
- Opcode: DW_LNS_extended_op
ExtLen: 0x09
SubOpcode: DW_LNE_set_address
Data: 0x1234
- Opcode: DW_LNS_extended_op
ExtLen: 0x09
SubOpcode: DW_LNE_define_file
FileEntry:
Name: abcd
DirIdx: 0x1234
ModTime: 0x1234
Length: 0x1234
- Opcode: DW_LNS_extended_op
ExtLen: 0x09
SubOpcode: DW_LNE_set_discriminator
Data: 0x1234
## j) Test that yaml2obj is able to infer the length and header_length fields.
# RUN: yaml2obj --docnum=10 %s -o %t10.o
# RUN: llvm-readelf --hex-dump=.debug_line %t10.o | FileCheck %s --check-prefix=INFER-LENGTH
# INFER-LENGTH: Hex dump of section '.debug_line':
# INFER-LENGTH-NEXT: 0x00000000 2e000000 04002500 00000101 01fb0e04 ......%.........
## ^------- unit_length (4-byte) 0x2e
## ^--- version (2-byte)
## ^-------- header_length (4-byte) 0x25
## ^- minimum_instruction_length (1-byte)
## ^- maximum_operations_per_instruction (1-byte)
## ^- default_is_stmt (1-byte)
## ^- line_base (1-byte) -5
## ^- line_range (1-byte)
## ^- opcode_base (1-byte)
# INFER-LENGTH-NEXT: 0x00000010 00010174 656d7031 0074656d 70320000 ...temp1.temp2..
## ^----- standard_opcode_lengths (3-byte)
## ^------------- include_directories[1] "temp1\0"
## ^------------ include_directories[2] "temp1\0"
## ^- include_directories null byte
# INFER-LENGTH-NEXT: 0x00000020 612e6300 01000062 2e630002 00000000 a.c....b.c......
## ^------- file_names[1] file name "a.c\0"
## ^- file_names[1] directory index (ULEB128) 0x01
## ^- file_names[1] file length (ULEB128) 0x00
## ^- file_names[1] modification time 0x00
## ^-------- file_names[2] file name "b.c\0"
## ^- file_names[2] directory index (ULEB128) 0x02
## ^- file_names[2] file length (ULEB128) 0x00
## ^- file_names[2] modification time 0x00
## ^- file_names null byte
## ^- DW_LNS_extended_op
# INFER-LENGTH-NEXT: 0x00000030 0101ffff ffff2500 00000000 00000400 ......%.........
## ^- extended op length (ULEB128) 0x01
## ^- DW_LNE_end_sequence
## ^-------------------------- unit_length (12-byte)
## ^--- version (2-byte)
# INFER-LENGTH-NEXT: 0x00000040 18000000 00000000 010101fb 0e040001 ................
## ^---------------- header_length (8-byte)
## ^- minimum_instruction_length (1-byte)
## ^- maximum_operations_per_instruction (1-byte)
## ^- default_is_stmt (1-byte)
## ^- line_base (1-byte) -5
## ^- line_range (1-byte)
## ^- opcode_base (1-byte)
## ^--- standard_opcode_lengths (3-byte)
# INFER-LENGTH-NEXT: 0x00000050 0174656d 70330000 632e6300 01000000 .temp3..c.c.....
## --
## ^------------ include_directories[1] "temp3\0"
## ^- include_directories null byte
## ^------- file_names[1] file name "a.c\0"
## ^- file_names[1] directory index (ULEB128) 0x01
## ^- file_names[1] file length (ULEB128) 0x00
## ^- file_names[1] modification time 0x00
## ^- file_names null byte
# INFER-LENGTH-NEXT: 0x00000060 000101 ...
## ^- DW_LNS_extended_op
## ^- extended op length (ULEB128) 0x01
## ^- DW_LNE_end_sequence
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
DWARF:
debug_line:
- Version: 4
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 251
LineRange: 14
OpcodeBase: 4
StandardOpcodeLengths: [ 0, 1, 1 ]
IncludeDirs:
- temp1
- temp2
Files:
- Name: a.c
DirIdx: 1
ModTime: 0
Length: 0
- Name: b.c
DirIdx: 2
ModTime: 0
Length: 0
Opcodes:
- Opcode: DW_LNS_extended_op
ExtLen: 1
SubOpcode: DW_LNE_end_sequence
- Format: DWARF64
Version: 4
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 251
LineRange: 14
OpcodeBase: 4
StandardOpcodeLengths: [ 0, 1, 1 ]
IncludeDirs:
- temp3
Files:
- Name: c.c
DirIdx: 1
ModTime: 0
Length: 0
Opcodes:
- Opcode: DW_LNS_extended_op
ExtLen: 1
SubOpcode: DW_LNE_end_sequence
## k) Test that we can omit the include_directories, file_names and opcodes
## fields of the line table.
# RUN: yaml2obj --docnum=11 %s -o %t11.o
# RUN: llvm-readelf --hex-dump=.debug_line %t11.o | \
# RUN: FileCheck %s --check-prefix=OMIT-FIELDS
# OMIT-FIELDS: Hex dump of section '.debug_line':
# OMIT-FIELDS-NEXT: 0x00000000 11000000 04000b00 00000101 01fb0e04 ................
## ^------- unit_length (4-byte)
## ^--- version (2-byte)
## ^-------- header_length (4-byte)
## ^- minimum_instruction_length (1-byte)
## ^- maximum_operations_per_instruction (1-byte)
## ^- default_is_stmt (1-byte)
## ^- line_base (1-byte) -5
## ^- line_range (1-byte)
## ^- opcode_base (1-byte)
# OMIT-FIELDS-NEXT: 0x00000010 00010100 00 .....
## ^----- standard_opcode_lengths (3-byte)
## ^- include_directories null byte (1-byte)
## ^- file_names null byte (1-byte)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
DWARF:
debug_line:
- Version: 4
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 251
LineRange: 14
OpcodeBase: 4
StandardOpcodeLengths: [ 0, 1, 1 ]
## l) Test that we can specify or omit the ExtLen field of extended opcodes.
# RUN: yaml2obj --docnum=12 %s -o %t12.o
# RUN: llvm-readelf --hex-dump=.debug_line %t12.o | \
# RUN: FileCheck %s --check-prefix=EXTLEN --strict-whitespace
# EXTLEN: Hex dump of section '.debug_line':
# EXTLEN-NEXT: 0x00000000 20000000 04000800 00000101 01fb0e01
## ^---------------------------------- line number program header
# EXTLEN-NEXT: 0x00000010 0000000c 03616263 6400b424 b424b424
## ----
## ^- DW_LNS_extended_op
## ^- extended opcode length (ULEB128) 12
## ^- DW_LNE_define_file
## ^---------- "abcd\0"
## ^--- directory index (ULEB128) 0x1234
## ^--- modification time (ULEB128) 0x1234
## ^--- file length (ULEB128) 0x1234
# EXTLEN-NEXT: 0x00000020 00b42401{{ }}
## ^- DW_LNS_extended_op
## ^--- extended opcode length (ULEB128) 0x1234
## ^- DW_LNE_end_sequence
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
DWARF:
debug_line:
- Version: 4
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 251
LineRange: 14
OpcodeBase: 1
StandardOpcodeLengths: []
Opcodes:
- Opcode: DW_LNS_extended_op
## Omit the ExtLen field.
SubOpcode: DW_LNE_define_file
FileEntry:
Name: abcd
DirIdx: 0x1234
ModTime: 0x1234
Length: 0x1234
- Opcode: DW_LNS_extended_op
## Specify the ExtLen field.
ExtLen: 0x1234
SubOpcode: DW_LNE_end_sequence