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
|
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
.globaltype __tls_base, i32
.globaltype __tls_align, i32, immutable
.globl tls1_addr
tls1_addr:
.functype tls1_addr () -> (i32)
global.get __tls_base
i32.const tls1@TLSREL
i32.add
end_function
.globl tls2_addr
tls2_addr:
.functype tls2_addr () -> (i32)
global.get __tls_base
i32.const tls2@TLSREL
i32.add
end_function
.globl tls3_addr
tls3_addr:
.functype tls3_addr () -> (i32)
global.get __tls_base
i32.const tls3
i32.add
end_function
.globl tls_align
tls_align:
.functype tls_align () -> (i32)
global.get __tls_align
end_function
.section .bss.no_tls,"",@
.globl no_tls
.p2align 2
no_tls:
.int32 0
.size no_tls, 4
// Older versions of LLVM did not use the "T" flag so we need to support
// infering TLS from the name alone.
.section .tdata.tls1,"",@
.globl tls1
.p2align 2
tls1:
.int32 1
.size tls1, 4
.section sec_tls2,"T",@
.globl tls2
.p2align 2
tls2:
.int32 1
.size tls2, 4
.section sec_tls3,"T",@
.globl tls3
.p2align 2
tls3:
.int32 0
.size tls3, 4
.section .custom_section.target_features,"",@
.int8 2
.int8 43
.int8 7
.ascii "atomics"
.int8 43
.int8 11
.ascii "bulk-memory"
# RUN: wasm-ld -no-gc-sections --shared-memory --max-memory=131072 --no-entry -o %t.wasm %t.o
# RUN: obj2yaml %t.wasm | FileCheck %s
# RUN: llvm-objdump -d --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck --check-prefix=ASM %s --
# RUN: wasm-ld -no-gc-sections --shared-memory --max-memory=131072 --no-merge-data-segments --no-entry -o %t2.wasm %t.o
# RUN: obj2yaml %t2.wasm | FileCheck %s
# CHECK: - Type: GLOBAL
# __stack_pointer
# CHECK-NEXT: Globals:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: true
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 66576
# __tls_base
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: true
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 0
# __tls_size
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: false
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 12
# __tls_align
# CHECK-NEXT: - Index: 3
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: false
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 4
# ASM: <__wasm_init_tls>:
# ASM-EMPTY:
# ASM-NEXT: local.get 0
# ASM-NEXT: global.set 1
# ASM-NEXT: local.get 0
# ASM-NEXT: i32.const 0
# ASM-NEXT: i32.const 12
# ASM-NEXT: memory.init 0, 0
# ASM-NEXT: end
# ASM: <tls1_addr>:
# ASM-EMPTY:
# ASM-NEXT: global.get 1
# ASM-NEXT: i32.const 0
# ASM-NEXT: i32.add
# ASM-NEXT: end
# ASM: <tls2_addr>:
# ASM-EMPTY:
# ASM-NEXT: global.get 1
# ASM-NEXT: i32.const 4
# ASM-NEXT: i32.add
# ASM-NEXT: end
# ASM: <tls3_addr>:
# ASM-EMPTY:
# ASM-NEXT: global.get 1
# ASM-NEXT: i32.const 8
# ASM-NEXT: i32.add
# ASM-NEXT: end
# ASM: <tls_align>:
# ASM-EMPTY:
# ASM-NEXT: global.get 3
# ASM-NEXT: end
# Also verify TLS usage with --relocatable
# RUN: wasm-ld --relocatable -o %t3.wasm %t.o
# RUN: obj2yaml %t3.wasm | FileCheck %s --check-prefix=RELOC
# RELOC: - Type: IMPORT
# RELOC-NEXT: Imports:
# RELOC-NEXT: - Module: env
# RELOC-NEXT: Field: __tls_base
# RELOC-NEXT: Kind: GLOBAL
# RELOC-NEXT: GlobalType: I32
# RELOC-NEXT: GlobalMutable: true
# RELOC-NEXT: - Module: env
# RELOC-NEXT: Field: __tls_align
# RELOC-NEXT: Kind: GLOBAL
# RELOC-NEXT: GlobalType: I32
# RELOC-NEXT: GlobalMutable: false
# RELOC: GlobalNames:
# RELOC-NEXT: - Index: 0
# RELOC-NEXT: Name: __tls_base
# RELOC-NEXT: - Index: 1
# RELOC-NEXT: Name: __tls_align
# RELOC-NEXT: DataSegmentNames:
# RELOC-NEXT: - Index: 0
# RELOC-NEXT: Name: .tdata
# RELOC-NEXT: - Index: 1
# RELOC-NEXT: Name: .bss.no_tls
|
