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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-emscripten -o %t.o %s
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-emscripten %S/Inputs/internal_func.s -o %t.internal_func.o
# RUN: wasm-ld --no-gc-sections --experimental-pic -pie --unresolved-symbols=import-dynamic -o %t.wasm %t.o %t.internal_func.o
# RUN: obj2yaml %t.wasm | FileCheck %s
# RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_apply_data_relocs --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck %s --check-prefixes DISASSEM
.functype external_func () -> ()
.functype internal_func1 () -> (i32)
.functype internal_func2 () -> (i32)
.globaltype __stack_pointer, i32
.section .data,"",@
.p2align 2
data:
.int32 2
.size data, 4
indirect_func:
.int32 foo
.size indirect_func, 4
data_addr:
.int32 data
.size data_addr, 4
data_addr_external:
.int32 data_external
.size data_addr_external, 4
.section .text,"",@
foo:
.functype foo () -> (i32)
global.get data@GOT
i32.load 0
drop
global.get indirect_func@GOT
i32.load 0
call_indirect () -> (i32)
drop
global.get __stack_pointer
end_function
get_data_address:
.functype get_data_address () -> (i32)
global.get data_addr_external@GOT
end_function
get_internal_func1_address:
.functype get_internal_func1_address () -> (i32)
global.get internal_func1@GOT
end_function
get_internal_func2_address:
.functype get_internal_func2_address () -> (i32)
global.get internal_func2@GOT
end_function
.globl _start
_start:
.functype _start () -> ()
call external_func
end_function
.section .custom_section.target_features,"",@
.int8 2
.int8 43
.int8 7
.ascii "atomics"
.int8 43
.int8 11
.ascii "bulk-memory"
# CHECK: Sections:
# CHECK-NEXT: - Type: CUSTOM
# CHECK-NEXT: Name: dylink.0
# CHECK-NEXT: MemorySize: 16
# CHECK-NEXT: MemoryAlignment: 2
# CHECK-NEXT: TableSize: 3
# CHECK-NEXT: TableAlignment: 0
# CHECK-NEXT: Needed: []
# CHECK: - Type: IMPORT
# CHECK-NEXT: Imports:
# CHECK-NEXT: - Module: env
# CHECK-NEXT: Field: __indirect_function_table
# CHECK-NEXT: Kind: TABLE
# CHECK-NEXT: Table:
# CHECK-NEXT: Index: 0
# CHECK-NEXT: ElemType: FUNCREF
# CHECK-NEXT: Limits:
# CHECK-NEXT: Minimum: 0x3
# CHECK-NEXT: - Module: env
# CHECK-NEXT: Field: __stack_pointer
# CHECK-NEXT: Kind: GLOBAL
# CHECK-NEXT: GlobalType: I32
# CHECK-NEXT: GlobalMutable: true
# CHECK-NEXT: - Module: env
# CHECK-NEXT: Field: __memory_base
# CHECK-NEXT: Kind: GLOBAL
# CHECK-NEXT: GlobalType: I32
# CHECK-NEXT: GlobalMutable: false
# CHECK-NEXT: - Module: env
# CHECK-NEXT: Field: __table_base
# CHECK-NEXT: Kind: GLOBAL
# CHECK-NEXT: GlobalType: I32
# CHECK-NEXT: GlobalMutable: false
# CHECK: - Type: START
# CHECK-NEXT: StartFunction: 3
# CHECK: - Type: CUSTOM
# CHECK-NEXT: Name: name
# CHECK-NEXT: FunctionNames:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Name: external_func
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: Name: __wasm_call_ctors
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: Name: __wasm_apply_data_relocs
# CHECK-NEXT: - Index: 3
# CHECK-NEXT: Name: __wasm_apply_global_relocs
# CHECK-NEXT: - Index: 4
# CHECK-NEXT: Name: foo
# CHECK-NEXT: - Index: 5
# CHECK-NEXT: Name: get_data_address
# CHECK-NEXT: - Index: 6
# CHECK-NEXT: Name: get_internal_func1_address
# CHECK-NEXT: - Index: 7
# CHECK-NEXT: Name: get_internal_func2_address
# CHECK-NEXT: - Index: 8
# CHECK-NEXT: Name: _start
# CHECK-NEXT: - Index: 9
# CHECK-NEXT: Name: internal_func1
# CHECK-NEXT: - Index: 10
# CHECK-NEXT: Name: internal_func2
# CHECK-NEXT: GlobalNames:
# DISASSEM-LABEL: <__wasm_call_ctors>:
# DISASSEM-EMPTY:
# DISASSEM-NEXT: end
# DISASSEM-LABEL: <__wasm_apply_data_relocs>:
# DISASSEM: end
# Run the same test with extended-const support. When this is available
# we don't need __wasm_apply_global_relocs and instead rely on the add
# instruction in the InitExpr. We also, therefore, do not need these globals
# to be mutable.
# RUN: wasm-ld --no-gc-sections --experimental-pic -pie --unresolved-symbols=import-dynamic --extra-features=extended-const -o %t.extended.wasm %t.o %t.internal_func.o
# RUN: obj2yaml %t.extended.wasm | FileCheck %s --check-prefix=EXTENDED-CONST
# EXTENDED-CONST-NOT: __wasm_apply_global_relocs
# EXTENDED-CONST: - Type: GLOBAL
# EXTENDED-CONST-NEXT: Globals:
# EXTENDED-CONST-NEXT: - Index: 4
# EXTENDED-CONST-NEXT: Type: I32
# EXTENDED-CONST-NEXT: Mutable: false
# EXTENDED-CONST-NEXT: InitExpr:
# EXTENDED-CONST-NEXT: Opcode: GLOBAL_GET
# EXTENDED-CONST-NEXT: Index: 1
# EXTENDED-CONST-NEXT: - Index: 5
# EXTENDED-CONST-NEXT: Type: I32
# EXTENDED-CONST-NEXT: Mutable: false
# EXTENDED-CONST-NEXT: InitExpr:
# EXTENDED-CONST-NEXT: Extended: true
# EXTENDED-CONST-NEXT: Body: 230141046A0B
# EXTENDED-CONST-NEXT: - Index: 6
# EXTENDED-CONST-NEXT: Type: I32
# EXTENDED-CONST-NEXT: Mutable: false
# EXTENDED-CONST-NEXT: InitExpr:
# EXTENDED-CONST-NEXT: Extended: true
# This instruction sequence decodes to:
# (global.get[0x23] 0x1 i32.const[0x41] 0x0C i32.add[0x6A] end[0x0b])
# EXTENDED-CONST-NEXT: Body: 2301410C6A0B
# EXTENDED-CONST-NEXT: - Index: 7
# EXTENDED-CONST-NEXT: Type: I32
# EXTENDED-CONST-NEXT: Mutable: false
# EXTENDED-CONST-NEXT: InitExpr:
# EXTENDED-CONST-NEXT: Opcode: GLOBAL_GET
# EXTENDED-CONST-NEXT: Index: 2
# EXTENDED-CONST-NEXT: - Index: 8
# EXTENDED-CONST-NEXT: Type: I32
# EXTENDED-CONST-NEXT: Mutable: false
# EXTENDED-CONST-NEXT: InitExpr:
# EXTENDED-CONST-NEXT: Extended: true
# This instruction sequence decodes to:
# (global.get[0x23] 0x2 i32.const[0x41] 0x1 i32.add[0x6A] end[0x0b])
# EXTENDED-CONST-NEXT: Body: 230241016A0B
# EXTENDED-CONST-NOT: - Type: START
# EXTENDED-CONST: FunctionNames:
# EXTENDED-CONST-NEXT: - Index: 0
# EXTENDED-CONST-NEXT: Name: external_func
# EXTENDED-CONST-NEXT: - Index: 1
# EXTENDED-CONST-NEXT: Name: __wasm_call_ctors
# EXTENDED-CONST-NEXT: - Index: 2
# EXTENDED-CONST-NEXT: Name: __wasm_apply_data_relocs
# Run the same test with threading support. In this mode
# we expect __wasm_init_memory and __wasm_apply_data_relocs
# to be generated along with __wasm_start as the start
# function.
# RUN: wasm-ld --no-gc-sections --shared-memory --experimental-pic -pie --unresolved-symbols=import-dynamic -o %t.shmem.wasm %t.o %t.internal_func.o
# RUN: obj2yaml %t.shmem.wasm | FileCheck %s --check-prefix=SHMEM
# RUN: llvm-objdump --disassemble-symbols=__wasm_start --no-show-raw-insn --no-leading-addr %t.shmem.wasm | FileCheck %s --check-prefix DISASSEM-SHMEM
# SHMEM: - Type: START
# SHMEM-NEXT: StartFunction: 6
# DISASSEM-SHMEM-LABEL: <__wasm_start>:
# DISASSEM-SHMEM-EMPTY:
# DISASSEM-SHMEM-NEXT: call 5
# DISASSEM-SHMEM-NEXT: call 4
# DISASSEM-SHMEM-NEXT: end
# SHMEM: FunctionNames:
# SHMEM-NEXT: - Index: 0
# SHMEM-NEXT: Name: external_func
# SHMEM-NEXT: - Index: 1
# SHMEM-NEXT: Name: __wasm_call_ctors
# SHMEM-NEXT: - Index: 2
# SHMEM-NEXT: Name: __wasm_init_tls
# SHMEM-NEXT: - Index: 3
# SHMEM-NEXT: Name: __wasm_apply_data_relocs
# SHMEM-NEXT: - Index: 4
# SHMEM-NEXT: Name: __wasm_init_memory
# SHMEM-NEXT: - Index: 5
# SHMEM-NEXT: Name: __wasm_apply_global_relocs
# SHMEM-NEXT: - Index: 6
# SHMEM-NEXT: Name: __wasm_start
# SHMEM-NEXT: - Index: 7
# SHMEM-NEXT: Name: foo
# SHMEM-NEXT: - Index: 8
# SHMEM-NEXT: Name: get_data_address
# SHMEM-NEXT: - Index: 9
# SHMEM-NEXT: Name: get_internal_func1_address
# SHMEM-NEXT: - Index: 10
# SHMEM-NEXT: Name: get_internal_func2_address
# SHMEM-NEXT: - Index: 11
# SHMEM-NEXT: Name: _start
|
