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
|
# REQUIRES: x86
# RUN: echo '.long 0; .comm common_uniq_0,4,4; .comm common_multiple,8,8' \
# RUN: | llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %tfile0.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/common-filespec1.s -o %tfile1.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/common-filespec2.s -o %tfile2.o
# RUN: ld.lld -o %t1 --script %s %tfile0.o %tfile1.o %tfile2.o
# RUN: llvm-readobj -S --symbols %t1 | FileCheck %s
SECTIONS {
.common_0 : { *file0.o(COMMON) }
.common_1 : { *file1.o(COMMON) }
.common_2 : { *file2.o(COMMON) }
}
# Make sure all 3 sections are allocated and they have sizes and alignments
# corresponding to the commons assigned to them
# CHECK: Section {
# CHECK: Index:
# CHECK: Name: .common_0
# CHECK-NEXT: Type: SHT_NOBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_WRITE
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x4
# CHECK-NEXT: Offset: 0x
# CHECK-NEXT: Size: 4
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK: Section {
# CHECK: Index:
# CHECK: Name: .common_1
# CHECK-NEXT: Type: SHT_NOBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_WRITE
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x8
# CHECK-NEXT: Offset: 0x
# CHECK-NEXT: Size: 8
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 8
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK: Section {
# CHECK: Index:
# CHECK: Name: .common_2
# CHECK-NEXT: Type: SHT_NOBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_WRITE
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x10
# CHECK-NEXT: Offset: 0x
# CHECK-NEXT: Size: 48
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 16
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# Commons with unique name in each file must be assigned to that file's section.
# For a common with multiple definitions, the largest one wins and it must be
# assigned to the section from the file which provided the winning def
# CHECK: Symbol {
# CHECK: Name: common_uniq_0
# CHECK-NEXT: Value: 0x4
# CHECK-NEXT: Size: 4
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: .common_0
# CHECK-NEXT: }
# CHECK: Symbol {
# CHECK: Name: common_multiple
# CHECK-NEXT: Value: 0x10
# CHECK-NEXT: Size: 32
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: .common_2
# CHECK-NEXT: }
# CHECK: Symbol {
# CHECK: Name: common_uniq_1
# CHECK-NEXT: Value: 0x8
# CHECK-NEXT: Size: 8
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: .common_1
# CHECK-NEXT: }
# CHECK: Symbol {
# CHECK: Name: common_uniq_2
# CHECK-NEXT: Value: 0x30
# CHECK-NEXT: Size: 16
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type: Object
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: .common_2
# CHECK-NEXT: }
|
