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
|
## In this test we check how the unwind information is dumped with the use of --unwind.
## First, check that both llvm-readobj and llvm-readelf are able to dump a valid unwind information.
## Check that the output is the same for these tools.
## The memory size of the PT_GNU_EH_FRAME equals its file size and they both are equal to 0x3c.
## 0x3c is the size of the .eh_frame_hdr section.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3c -DFILESIZE=0x3c -o %t1.valid
# RUN: llvm-readobj --unwind %t1.valid | FileCheck %s
# RUN: llvm-readelf --sections --unwind %t1.valid | FileCheck %s --check-prefixes=SIZE,CHECK
## Validate the size of the .eh_frame_hdr section.
# SIZE: [Nr] Name Type Address Off Size
# SIZE: [ 2] .eh_frame_hdr PROGBITS 00000000004013c0 0000bc 00003c
# CHECK: EHFrameHeader {
# CHECK-NEXT: Address: 0x4013c0
# CHECK-NEXT: Offset: 0xbc
# CHECK-NEXT: Size: 0x3c
# CHECK-NEXT: Corresponding Section: .eh_frame_hdr
# CHECK-NEXT: Header {
# CHECK-NEXT: version: 1
# CHECK-NEXT: eh_frame_ptr_enc: 0x1b
# CHECK-NEXT: fde_count_enc: 0x3
# CHECK-NEXT: table_enc: 0x3b
# CHECK-NEXT: eh_frame_ptr: 0x401400
# CHECK-NEXT: fde_count: 6
# CHECK-NEXT: entry 0 {
# CHECK-NEXT: initial_location: 0x4004a0
# CHECK-NEXT: address: 0x401448
# CHECK-NEXT: }
# CHECK-NEXT: entry 1 {
# CHECK-NEXT: initial_location: 0x4004d0
# CHECK-NEXT: address: 0x401418
# CHECK-NEXT: }
# CHECK-NEXT: entry 2 {
# CHECK-NEXT: initial_location: 0x4005b6
# CHECK-NEXT: address: 0x401470
# CHECK-NEXT: }
# CHECK-NEXT: entry 3 {
# CHECK-NEXT: initial_location: 0x4005d0
# CHECK-NEXT: address: 0x401490
# CHECK-NEXT: }
# CHECK-NEXT: entry 4 {
# CHECK-NEXT: initial_location: 0x401250
# CHECK-NEXT: address: 0x4014c0
# CHECK-NEXT: }
# CHECK-NEXT: entry 5 {
# CHECK-NEXT: initial_location: 0x4012c0
# CHECK-NEXT: address: 0x4014f0
# CHECK-NEXT: }
# CHECK-NEXT: }
# CHECK-NEXT:}
# CHECK: .eh_frame section at offset 0xf8 address 0x401400:
# CHECK-NEXT: [0x401400] CIE length=20
# CHECK-NEXT: version: 1
# CHECK-NEXT: augmentation: zR
# CHECK-NEXT: code_alignment_factor: 1
# CHECK-NEXT: data_alignment_factor: -8
# CHECK-NEXT: return_address_register: 16
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_offset: reg16 -8
# CHECK-NEXT: DW_CFA_undefined: reg16
# CHECK: [0x401418] FDE length=20 cie=[0x401400]
# CHECK-NEXT: initial_location: 0x4004d0
# CHECK-NEXT: address_range: 0x2a (end : 0x4004fa)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401430] CIE length=20
# CHECK-NEXT: version: 1
# CHECK-NEXT: augmentation: zR
# CHECK-NEXT: code_alignment_factor: 1
# CHECK-NEXT: data_alignment_factor: -8
# CHECK-NEXT: return_address_register: 16
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_offset: reg16 -8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401448] FDE length=36 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4004a0
# CHECK-NEXT: address_range: 0x20 (end : 0x4004c0)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_advance_loc: 6
# CHECK-NEXT: DW_CFA_def_cfa_offset: +24
# CHECK-NEXT: DW_CFA_advance_loc: 10
# CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg7 +8, DW_OP_breg16 +0, DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, DW_OP_lit3, DW_OP_shl, DW_OP_plus
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401470] FDE length=28 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4005b6
# CHECK-NEXT: address_range: 0x10 (end : 0x4005c6)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 1
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_offset: reg6 -16
# CHECK-NEXT: DW_CFA_advance_loc: 3
# CHECK-NEXT: DW_CFA_def_cfa_register: reg6
# CHECK-NEXT: DW_CFA_advance_loc: 11
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401490] FDE length=44 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4005d0
# CHECK-NEXT: address_range: 0xc7f (end : 0x40124f)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa: reg10 +0
# CHECK-NEXT: DW_CFA_advance_loc: 9
# CHECK-NEXT: DW_CFA_expression: reg6 DW_OP_breg6 +0
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg6 -8, DW_OP_deref
# CHECK-NEXT: DW_CFA_advance_loc2: 3174
# CHECK-NEXT: DW_CFA_def_cfa: reg10 +0
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x4014c0] FDE length=44 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x401250
# CHECK-NEXT: address_range: 0x66 (end : 0x4012b6)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 1
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_offset: reg6 -16
# CHECK-NEXT: DW_CFA_advance_loc: 3
# CHECK-NEXT: DW_CFA_def_cfa_register: reg6
# CHECK-NEXT: DW_CFA_advance_loc: 2
# CHECK-NEXT: DW_CFA_offset: reg15 -24
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_offset: reg14 -32
# CHECK-NEXT: DW_CFA_advance_loc: 7
# CHECK-NEXT: DW_CFA_offset: reg13 -40
# CHECK-NEXT: DW_CFA_offset: reg12 -48
# CHECK-NEXT: DW_CFA_advance_loc: 8
# CHECK-NEXT: DW_CFA_offset: reg3 -56
# CHECK-NEXT: DW_CFA_advance_loc1: 75
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x4014f0] FDE length=20 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4012c0
# CHECK-NEXT: address_range: 0x1 (end : 0x4012c1)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Entry: 0x0000000000400000
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x0000000000400000
AddressAlign: 16
Content: 50C704240020400031C05AC3
- Name: .eh_frame_hdr
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x00000000004013c0
AddressAlign: 4
Content: 011B033B3C00000006000000E0F0FFFF8800000010F1FFFF58000000F6F1FFFFB000000010F2FFFFD000000090FEFFFF0001000000FFFFFF30010000
- Name: .eh_frame
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x0000000000401400
AddressAlign: 8
Content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
Symbols:
- Name: myfunc
Type: STT_FUNC
Section: .text
Value: 0x0000000000400000
Binding: STB_GLOBAL
ProgramHeaders:
- Type: PT_LOAD
Flags: [ PF_X, PF_R ]
VAddr: 0x00400000
PAddr: 0x00400000
FirstSec: .text
LastSec: .text
- Type: PT_GNU_EH_FRAME
Flags: [ PF_X, PF_R ]
VAddr: 0x004013C0
PAddr: 0x004013C0
MemSize: [[MEMSIZE]]
FileSize: [[FILESIZE]]
FirstSec: .eh_frame_hdr
LastSec: .eh_frame_hdr
## Document we report a error when the memory size of the PT_GNU_EH_FRAME does not match its file size.
## TODO: we want to report a warning and continue dumping instead.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3b -DFILESIZE=0x3c -o %t1.size.mismatch
# RUN: not llvm-readobj --unwind %t1.size.mismatch 2>&1 | \
# RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH
# RUN: not llvm-readelf --unwind %t1.size.mismatch 2>&1 | \
# RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH
# SIZE-MISMATCH: error: '[[FILE]]': p_memsz does not match p_filesz for GNU_EH_FRAME
## Check we partially dump the unwind information when the PT_GNU_EH_FRAME segment
## points to truncated data.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x1 -DFILESIZE=0x1 -o %t1.truncated
# RUN: not llvm-readobj --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED
# RUN: not llvm-readelf --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED
# TRUNCATED: EHFrameHeader {
# TRUNCATED-NEXT: Address: 0x4013c0
# TRUNCATED-NEXT: Offset: 0xbc
# TRUNCATED-NEXT: Size: 0x1
# TRUNCATED-NEXT: Corresponding Section: .eh_frame_hdr
# TRUNCATED-NEXT: Header {
# TRUNCATED-NEXT: version: 1
# TRUNCATED-NEXT: eh_frame_ptr_enc: 0x0
# TRUNCATED-NEXT: error: '[[FILE]]': unexpected encoding eh_frame_ptr_enc
## Check we report an error when the tool is unable to parse .eh_frame section.
# RUN: yaml2obj --docnum=2 %s -o %t2.exe
# RUN: not llvm-readobj --unwind %t2.exe 2>&1 | FileCheck %s -DFILE=%t2.exe --check-prefix=NO-CIE-ERR
# NO-CIE-ERR: .eh_frame section at offset 0x40 address 0x0:
# NO-CIE-ERR-NEXT: error: '[[FILE]]': parsing FDE data at 0x0 failed due to missing CIE
# NO-CIE-ERR-NOT: {{.}}
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .eh_frame
Type: SHT_X86_64_UNWIND
## The content is generated from the following code. It has no CIE.
## See the DebugInfoX86/eh-frame-cie-id.s test case for more history.
## .section .eh_frame,"a",@unwind
## .long .Lend - .LCIEptr # Length
## .LCIEptr:
## .long 0xffffffff # CIE pointer
## .quad 0x1111abcd # Initial location
## .quad 0x00010000 # Address range
## .Lend:
Content: 14000000FFFFFFFFCDAB1111000000000000010000000000
## Check we report a error when the .eh_frame section contains truncated data.
# RUN: yaml2obj --docnum=3 %s -o %t3.exe
# RUN: not llvm-readobj --unwind %t3.exe 2>&1 | FileCheck %s -DFILE=%t3.exe --check-prefix=TRUNCATED-ERR
# TRUNCATED-ERR: .eh_frame section at offset 0x34 address 0x0:
# TRUNCATED-ERR-NEXT: error: '[[FILE]]': unexpected end of data at offset 0x4
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .eh_frame
Type: SHT_PROGBITS
## Length is set to 0xFF, though the actual section length is 4.
Content: "FF000000"
## Check we report an error when we can't read the content of the .eh_frame section.
## Case A: test we report an error when the p_offset of the PT_GNU_EH_FRAME
## is invalid (goes past the end of the file).
# RUN: yaml2obj --docnum=4 %s -o %t4 -DOFFSET=0xffff0000 -DSIZE=0x1 -DBITS=32
# RUN: not llvm-readobj --unwind %t4 2>&1 \
# RUN: | FileCheck %s -DFILE=%t4 --check-prefix=BROKEN-CONTENT -DOFFSET=0xffff0000 -DSIZE=0x1
# RUN: yaml2obj --docnum=4 %s -o %t5 -DOFFSET=0x1 -DSIZE=0xffff0000 -DBITS=32
# RUN: not llvm-readobj --unwind %t5 2>&1 \
# RUN: | FileCheck %s -DFILE=%t5 --check-prefix=BROKEN-CONTENT -DOFFSET=0x1 -DSIZE=0xffff0000
# BROKEN-CONTENT: EHFrameHeader {
# BROKEN-CONTENT-NEXT: Address: 0x0
# BROKEN-CONTENT-NEXT: Offset: [[OFFSET]]
# BROKEN-CONTENT-NEXT: Size: [[SIZE]]
# BROKEN-CONTENT-NEXT: Corresponding Section:
# BROKEN-CONTENT-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that is greater than the file size (0xe0)
--- !ELF
FileHeader:
Class: ELFCLASS[[BITS]]
Data: ELFDATA2LSB
Type: ET_EXEC
ProgramHeaders:
- Type: PT_GNU_EH_FRAME
MemSize: [[SIZE]]
FileSize: [[SIZE]]
Offset: [[OFFSET]]
## Case B: test we report an error when the file size of the PT_GNU_EH_FRAME
## is invalid (goes past the end of the file).
# RUN: yaml2obj --docnum=4 %s -o %t6 -DOFFSET=0x100 -DSIZE=0xffff0000 -DBITS=32
# RUN: not llvm-readobj --unwind %t6 2>&1 \
# RUN: | FileCheck %s -DFILE=%t6 --check-prefix=BROKEN-CONTENT -DOFFSET=0x100 -DSIZE=0xffff0000
## Case C: test we report an error when the offset + the file size of the PT_GNU_EH_FRAME is so large a
## value that it overflows the platform address size type.
# RUN: yaml2obj --docnum=4 %s -o %t7 -DOFFSET=0x1 -DSIZE=0xffffffff -DBITS=32
# RUN: not llvm-readobj --unwind %t7 2>&1 | FileCheck %s -DFILE=%t7 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffff
# RUN: yaml2obj --docnum=4 %s -o %t8 -DOFFSET=0xffffffff -DSIZE=0x1 -DBITS=32
# RUN: not llvm-readobj --unwind %t8 2>&1 | FileCheck %s -DFILE=%t8 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffff -DSIZE=0x1
# RUN: yaml2obj --docnum=4 %s -o %t9 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff -DBITS=64
# RUN: not llvm-readelf --unwind %t9 2>&1 | FileCheck %s -DFILE=%t9 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff
# RUN: yaml2obj --docnum=4 %s -o %t10 -DOFFSET=0xffffffffffffffff -DSIZE=0x1 -DBITS=64
# RUN: not llvm-readelf --unwind %t10 2>&1 | FileCheck %s -DFILE=%t10 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffffffffffff -DSIZE=0x1
# BROKEN-CONTENT2: EHFrameHeader {
# BROKEN-CONTENT2-NEXT: Address: 0x0
# BROKEN-CONTENT2-NEXT: Offset: [[OFFSET]]
# BROKEN-CONTENT2-NEXT: Size: [[SIZE]]
# BROKEN-CONTENT2-NEXT: Corresponding Section:
# BROKEN-CONTENT2-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that cannot be represented
|
