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
|
## Check how we produce SHT_DYNSYM sections.
## Check we do not crash/assert when .dynsym is specified
## explicitly, but .dynstr is not present.
## Check we set the sh_link field to 0 for the .dynsym section in this case.
# RUN: yaml2obj %s -o %t1
# RUN: llvm-readelf --section-headers %t1 | FileCheck %s
# CHECK: Section Headers:
# CHECK-NEXT: [Nr] Name Type Address Off Size ES Flg Lk
# CHECK-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0
# CHECK-NEXT: [ 1] .dynsym DYNSYM 0000000000000000 000040 000018 18 A 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .dynsym
Type: SHT_DYNSYM
Offset: [[OFFSET=<none>]]
## Check we can use the "Offset" key to to set an arbitrary offset for the SHT_DYNSYM section.
# RUN: yaml2obj %s -DOFFSET=0x100 -o %t2
# RUN: llvm-readelf --section-headers %t2 | FileCheck %s --check-prefix=OFFSET
# OFFSET: Section Headers:
# OFFSET-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# OFFSET-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# OFFSET-NEXT: [ 1] .dynsym DYNSYM 0000000000000000 000100 000018 18 A 0 1 0
## Check we are able to set Link = 0 for the .dynsym section explicitly.
# RUN: yaml2obj %s --docnum=2 -DLINK=0 -o %t2
# RUN: llvm-readelf --section-headers %t2 | FileCheck %s --check-prefix=LINK-NULL
# LINK-NULL: [Nr] Name {{.*}} Flg Lk Inf
# LINK-NULL: [ 1] .dynsym {{.*}} A 0 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .dynsym
Type: SHT_DYNSYM
Link: [[LINK=<none>]]
- Name: .dynstr
Type: SHT_STRTAB
- Name: .foo
Type: SHT_PROGBITS
## Check that by default the .dynsym section will be linked to the .dynstr section,
## when the latter one exists.
# RUN: yaml2obj %s --docnum=2 -o %t3
# RUN: llvm-readelf --section-headers %t3 | FileCheck %s --check-prefix=LINK-DEFAULT
# LINK-DEFAULT: [Nr] Name {{.*}} Flg Lk Inf
# LINK-DEFAULT: [ 1] .dynsym {{.*}} A 2 1
# LINK-DEFAULT: [ 2] .dynstr {{.*}} A 0 0
## Even when the .dynstr section exists, we can explicitly link the .dynsym section
## to another section.
# RUN: yaml2obj %s --docnum=2 -DLINK=3 -o %t4
# RUN: llvm-readelf --section-headers %t4 | FileCheck %s --check-prefix=LINK-FOO
# LINK-FOO: [Nr] Name {{.*}} Flg Lk Inf
# LINK-FOO: [ 1] .dynsym {{.*}} A 3 1
# LINK-FOO: [ 3] .foo
## Check we can use a section name as a Link value for .dynsym.
# RUN: yaml2obj %s --docnum=2 -DLINK=.foo -o %t5
# RUN: llvm-readelf --section-headers %t5 | FileCheck %s --check-prefix=LINK-FOO
|
