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
| # RUN: yaml2obj %s > %t.in.o
#
# RUN: llvm-objdump -section-headers %t.in.o | FileCheck %s --check-prefixes=SECTIONS-PRE
# RUN: llvm-objdump -t %t.in.o | FileCheck %s --check-prefixes=SYMBOLS-PRE
#
# RUN: llvm-objcopy -R .bss %t.in.o %t.remove-bss.o
# RUN: llvm-objdump -section-headers %t.remove-bss.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-BSS
# RUN: llvm-objdump -t %t.remove-bss.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-BSS
#
# RUN: llvm-objcopy --remove-section .bss %t.in.o %t.cmp.o
# RUN: cmp %t.remove-bss.o %t.cmp.o
#
# RUN: llvm-objcopy -R .text %t.in.o %t.remove-text.o
# RUN: llvm-objdump -section-headers %t.remove-text.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-TEXT
# RUN: llvm-objdump -t %t.remove-text.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-TEXT
#
# RUN: not llvm-objcopy -R .comdat %t.in.o %t.remove-comdat.o 2>&1 | FileCheck %s --check-prefix=ERROR-RELOC
#
# RUN: llvm-objcopy -R .text -R .comdat %t.in.o %t.remove-text-comdat.o
# RUN: llvm-objdump -section-headers %t.remove-text-comdat.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-TEXT-COMDAT
# RUN: llvm-objdump -t %t.remove-text-comdat.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-TEXT-COMDAT
#
#
# SECTIONS-PRE: Sections:
# SECTIONS-PRE-NEXT: Idx Name
# SECTIONS-PRE-NEXT: 0 .text
# SECTIONS-PRE-NEXT: 1 .bss
# SECTIONS-PRE-NEXT: 2 .comdat
# SECTIONS-PRE-NEXT: 3 .associative
# SECTIONS-PRE-EMPTY:
#
# SYMBOLS-PRE: SYMBOL TABLE:
# SYMBOLS-PRE-NEXT: {{.*}}(sec -1){{.*}} @feat.00
# SYMBOLS-PRE-NEXT: {{.*}}(sec 1){{.*}} .text
# SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
# SYMBOLS-PRE-NEXT: {{.*}}(sec 2){{.*}} .bss
# SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 2 comdat 0
# SYMBOLS-PRE-NEXT: {{.*}}(sec 4){{.*}} .associative
# SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 3 comdat 5
# SYMBOLS-PRE-NEXT: {{.*}}(sec 3){{.*}} .comdat
# SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 3 comdat 2
# SYMBOLS-PRE-NEXT: {{.*}}(sec 3){{.*}} foo
# SYMBOLS-PRE-NEXT: {{.*}}(sec 1){{.*}} main
# SYMBOLS-PRE-EMPTY:
#
#
# Removing the .bss section removes one symbol and its aux symbol,
# and updates the section indices in symbols pointing to later
# symbols, including the aux section defintitions.
#
# Testing that the absolute symbol @feat.00 survives the section number
# mangling.
#
# SECTIONS-REMOVE-BSS: Sections:
# SECTIONS-REMOVE-BSS-NEXT: Idx Name
# SECTIONS-REMOVE-BSS-NEXT: 0 .text
# SECTIONS-REMOVE-BSS-NEXT: 1 .comdat
# SECTIONS-REMOVE-BSS-NEXT: 2 .associative
# SECTIONS-REMOVE-BSS-EMPTY:
#
# SYMBOLS-REMOVE-BSS: SYMBOL TABLE:
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec -1){{.*}} @feat.00
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 1){{.*}} .text
# SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 3){{.*}} .associative
# SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 2 comdat 5
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 2){{.*}} .comdat
# SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 2 comdat 2
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 2){{.*}} foo
# SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 1){{.*}} main
# SYMBOLS-REMOVE-BSS-EMPTY:
#
#
# Removing the .text section is ok and just removes the external symbol
# referring to it.
#
# SECTIONS-REMOVE-TEXT: Sections:
# SECTIONS-REMOVE-TEXT-NEXT: Idx Name
# SECTIONS-REMOVE-TEXT-NEXT: 0 .bss
# SECTIONS-REMOVE-TEXT-NEXT: 1 .comdat
# SECTIONS-REMOVE-TEXT-NEXT: 2 .associative
# SECTIONS-REMOVE-TEXT-EMPTY:
#
# SYMBOLS-REMOVE-TEXT: SYMBOL TABLE:
# SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec -1){{.*}} @feat.00
# SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 1){{.*}} .bss
# SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
# SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 3){{.*}} .associative
# SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 2 comdat 5
# SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 2){{.*}} .comdat
# SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 2 comdat 2
# SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 2){{.*}} foo
# SYMBOLS-REMOVE-TEXT-EMPTY:
#
#
# Removing the .comdat section fails, since the .text section has relocations
# against it.
#
# ERROR-RELOC: relocation target 'foo' ({{.*}}) not found
#
#
# Removing the .comdat section and .text (with a relocation against .comdat)
# works, as it also removes the .associative section transitively.
#
# SECTIONS-REMOVE-TEXT-COMDAT: Sections:
# SECTIONS-REMOVE-TEXT-COMDAT-NEXT: Idx Name
# SECTIONS-REMOVE-TEXT-COMDAT-NEXT: 0 .bss
# SECTIONS-REMOVE-TEXT-COMDAT-EMPTY:
#
# SYMBOLS-REMOVE-TEXT-COMDAT: SYMBOL TABLE:
# SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: {{.*}}(sec -1){{.*}} @feat.00
# SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: {{.*}}(sec 1){{.*}} .bss
# SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
# SYMBOLS-REMOVE-TEXT-COMDAT-EMPTY:
--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: [ ]
sections:
- Name: .text
Characteristics: [ ]
Alignment: 4
SectionData: 488B0500000000C3
Relocations:
- VirtualAddress: 3
SymbolName: foo
Type: IMAGE_REL_AMD64_REL32
- Name: .bss
Characteristics: [ ]
Alignment: 4
SectionData: ''
- Name: .comdat
Characteristics: [ IMAGE_SCN_LNK_COMDAT ]
Alignment: 1
SectionData: '2A000000'
- Name: .associative
Characteristics: [ IMAGE_SCN_LNK_COMDAT ]
Alignment: 1
SectionData: '0000000000000000'
symbols:
- Name: '@feat.00'
Value: 0
SectionNumber: -1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 8
NumberOfRelocations: 1
NumberOfLinenumbers: 0
CheckSum: 583624169
Number: 1
- Name: .bss
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 0
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 2
- Name: .associative
Value: 0
SectionNumber: 4
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 8
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 3
Selection: IMAGE_COMDAT_SELECT_ASSOCIATIVE
- Name: .comdat
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 4
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 3482275674
Number: 3
Selection: IMAGE_COMDAT_SELECT_ANY
- Name: foo
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: main
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...
|