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
| # RUN: ld64.lld -arch arm64 -r -print_atoms %s -o %t | FileCheck %s
# RUN: ld64.lld -arch arm64 -r -print_atoms %t -o %t2 | FileCheck %s
# RUN: llvm-objdump -r -s -section="__eh_frame" -macho %t | FileCheck -check-prefix=CODE %s
# RUN: llvm-objdump -r -s -section="__eh_frame" -macho %t2 | FileCheck -check-prefix=CODE %s
--- !mach-o
arch: arm64
file-type: MH_OBJECT
flags: [ MH_SUBSECTIONS_VIA_SYMBOLS ]
compat-version: 0.0
current-version: 0.0
has-UUID: false
OS: unknown
sections:
- segment: __TEXT
section: __text
type: S_REGULAR
attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
alignment: 4
address: 0x0000000000000000
content: [ 0xFD, 0x7B, 0xBF, 0xA9, 0xFD, 0x03, 0x00, 0x91,
0x00, 0x00, 0x00, 0x90, 0x00, 0x00, 0x00, 0x91,
0x00, 0x00, 0x00, 0x94, 0x00, 0x00, 0x80, 0x52,
0xFD, 0x7B, 0xC1, 0xA8, 0xC0, 0x03, 0x5F, 0xD6 ]
relocations:
- offset: 0x00000010
type: ARM64_RELOC_BRANCH26
length: 2
pc-rel: true
extern: true
symbol: 9
- offset: 0x0000000C
type: ARM64_RELOC_PAGEOFF12
length: 2
pc-rel: false
extern: true
symbol: 1
- offset: 0x00000008
type: ARM64_RELOC_PAGE21
length: 2
pc-rel: true
extern: true
symbol: 1
- segment: __TEXT
section: __cstring
type: S_CSTRING_LITERALS
attributes: [ ]
address: 0x0000000000000020
content: [ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F,
0x72, 0x6C, 0x64, 0x00 ]
- segment: __LD
section: __compact_unwind
type: S_REGULAR
attributes: [ ]
alignment: 8
address: 0x0000000000000030
content: [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
relocations:
- offset: 0x00000000
type: ARM64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- segment: __TEXT
section: __eh_frame
type: S_COALESCED
attributes: [ ]
alignment: 8
address: 0x0000000000000050
content: [ 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x7A, 0x50, 0x4C, 0x52, 0x00, 0x01, 0x78,
0x1E, 0x07, 0x00, 0x9D, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0x00, 0x10, 0x0C, 0x1F, 0x00,
0x24, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00,
0x88, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x48, 0x0E, 0x10, 0x9E, 0x01, 0x9D, 0x02 ]
- segment: __TEXT
section: __gcc_except_tab
type: S_REGULAR
attributes: [ ]
address: 0x00000000000000A0
content: [ 0x00, 0x00, 0x00, 0x00 ]
local-symbols:
- name: ltmp0
type: N_SECT
sect: 1
value: 0x0000000000000000
- name: L_str
type: N_SECT
sect: 2
value: 0x0000000000000020
- name: ltmp1
type: N_SECT
sect: 2
value: 0x0000000000000020
- name: ltmp2
type: N_SECT
sect: 3
value: 0x0000000000000030
- name: ltmp3
type: N_SECT
sect: 4
value: 0x0000000000000050
- name: ltmp4
type: N_SECT
sect: 4
value: 0x0000000000000070
global-symbols:
- name: __Z3fooi
type: N_SECT
scope: [ N_EXT ]
sect: 1
value: 0x0000000000000000
undefined-symbols:
- name: __gxx_personality_v0
type: N_UNDF
scope: [ N_EXT ]
value: 0x0000000000000000
- name: _bar
type: N_UNDF
scope: [ N_EXT ]
value: 0x0000000000000000
- name: _puts
type: N_UNDF
scope: [ N_EXT ]
value: 0x0000000000000000
page-size: 0x00000000
# CHECK: defined-atoms:
# CHECK: - ref-name: L{{[0-9]*}}
# CHECK: scope: hidden
# CHECK: type: c-string
# CHECK: content: [ 48, 65, 6C, 6C, 6F, 20, 77, 6F, 72, 6C, 64, 00 ]
# CHECK: merge: by-content
# CHECK: - ref-name: L{{[0-9]*}}
# CHECK: type: unwind-cfi
# CHECK: content: [ 1C, 00, 00, 00, 00, 00, 00, 00, 01, 7A, 50, 4C,
# CHECK: 52, 00, 01, 78, 1E, 07, 00, {{..}}, {{..}}, {{..}}, {{..}}, {{..}},
# CHECK: {{..}}, {{..}}, {{..}}, 00, 10, 0C, 1F, 00 ]
# CHECK: - type: unwind-cfi
# CHECK: content: [ 24, 00, 00, 00, 24, 00, 00, 00, {{..}}, {{..}}, {{..}}, {{..}},
# CHECK: {{..}}, {{..}}, {{..}}, {{..}}, 20, 00, 00, 00, 00, 00, 00, 00,
# CHECK: 08, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, 48, 0E, 10,
# CHECK: 9E, 01, 9D, 02 ]
# CHECK: references:
# CHECK: - kind: negDelta32
# CHECK: offset: 4
# CHECK: target: L{{[0-9]*}}
# CHECK: - kind: unwindFDEToFunction
# CHECK: offset: 8
# CHECK: target: __Z3fooi
# CHECK: - kind: unwindFDEToFunction
# CHECK: offset: 25
# CHECK: target: L{{[0-9]*}}
# CHECK: - ref-name: L{{[0-9]*}}
# CHECK: type: unwind-lsda
# CHECK: content: [ 00, 00, 00, 00 ]
# CHECK: - type: compact-unwind
# CHECK: content: [ 00, 00, 00, 00, 00, 00, 00, 00, 20, 00, 00, 00,
# CHECK: 00, 00, 00, 03, 00, 00, 00, 00, 00, 00, 00, 00,
# CHECK: 00, 00, 00, 00, 00, 00, 00, 00 ]
# CHECK: alignment: 8
# CHECK: references:
# CHECK: - kind: pointer64
# CHECK: offset: 0
# CHECK: target: __Z3fooi
# CHECK: - name: __Z3fooi
# CHECK: scope: global
# CHECK: content: [ FD, 7B, BF, A9, FD, 03, 00, 91, 00, 00, 00, 90,
# CHECK: 00, 00, 00, 91, 00, 00, 00, 94, 00, 00, 80, 52,
# CHECK: FD, 7B, C1, A8, C0, 03, 5F, D6 ]
# CHECK: alignment: 4
# CHECK: references:
# CHECK: - kind: page21
# CHECK: offset: 8
# CHECK: target: L{{[0-9]*}}
# CHECK: - kind: offset12
# CHECK: offset: 12
# CHECK: target: L{{[0-9]*}}
# CHECK: - kind: branch26
# CHECK: offset: 16
# CHECK: target: _puts
# Make sure we don't have any relocations in the __eh_frame section
# CODE-NOT: RELOCATION RECORDS FOR [__eh_frame]
# Also make sure the reloc for the FDE->function is the correct offset
# It should be the offset from the fixup location back to the address
# of the function we are referencing
# CODE: Contents of section __eh_frame:
# This is the CIE:
# CODE-NEXT: {{[0-9abcdef]*}} 1c000000 00000000 017a504c 52000178
# CODE-NEXT: {{[0-9abcdef]*}} 1e0700bd ffffffff ffffff00 100c1f00
# This is the FDE:
# CODE-NEXT: {{[0-9abcdef]*}} 24000000 24000000 a8ffffff ffffffff
# This is the important offset for FDE->func ^~~~~~~~ ~~~~~~~~
# CODE-NEXT: {{[0-9abcdef]*}} 20000000 00000000 08c3ffff ffffffff
# And this is the offset for FDE->lsda ^~~~~~~~ ~~~~~~
# CODE-NEXT: {{[0-9abcdef]*}} ff480e10 9e019d02
# And this byte ^~
|