1# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s 2 3.globaltype __tls_base, i32 4.globaltype __tls_align, i32, immutable 5 6.globl tls1_addr 7tls1_addr: 8 .functype tls1_addr () -> (i32) 9 global.get __tls_base 10 i32.const tls1@TLSREL 11 i32.add 12 end_function 13 14.globl tls2_addr 15tls2_addr: 16 .functype tls2_addr () -> (i32) 17 global.get __tls_base 18 i32.const tls2@TLSREL 19 i32.add 20 end_function 21 22.globl tls3_addr 23tls3_addr: 24 .functype tls3_addr () -> (i32) 25 global.get __tls_base 26 i32.const tls3 27 i32.add 28 end_function 29 30.globl tls_align 31tls_align: 32 .functype tls_align () -> (i32) 33 global.get __tls_align 34 end_function 35 36# TLS symbols can also be accessed by `global.get tls1@GOT@TLS` 37# which is the pattern emitted for non-DSO-local symbols. 38# In this case the global that holds that address must be 39# initialized by `__wasm_apply_global_tls_relocs` which is 40# called by `__wasm_init_tls`. 41.globl tls1_got_addr 42tls1_got_addr: 43 .functype tls1_got_addr () -> (i32) 44 global.get tls1@GOT@TLS 45 end_function 46 47.section .bss.no_tls,"",@ 48.globl no_tls 49.p2align 2 50no_tls: 51 .int32 0 52 .size no_tls, 4 53 54// Older versions of LLVM did not use the "T" flag so we need to support 55// infering TLS from the name alone. 56.section .tdata.tls1,"",@ 57.globl tls1 58.p2align 2 59tls1: 60 .int32 1 61 .size tls1, 4 62 63.section sec_tls2,"T",@ 64.globl tls2 65.p2align 2 66tls2: 67 .int32 1 68 .size tls2, 4 69 70.section sec_tls3,"T",@ 71.globl tls3 72.p2align 2 73tls3: 74 .int32 0 75 .size tls3, 4 76 77.section .custom_section.target_features,"",@ 78 .int8 2 79 .int8 43 80 .int8 7 81 .ascii "atomics" 82 .int8 43 83 .int8 11 84 .ascii "bulk-memory" 85 86# RUN: wasm-ld -no-gc-sections --shared-memory --max-memory=131072 --no-entry -o %t.wasm %t.o 87# RUN: obj2yaml %t.wasm | FileCheck %s 88# RUN: llvm-objdump -d --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck --check-prefix=ASM %s -- 89 90# RUN: wasm-ld -no-gc-sections --shared-memory --max-memory=131072 --no-merge-data-segments --no-entry -o %t2.wasm %t.o 91# RUN: obj2yaml %t2.wasm | FileCheck %s 92 93# CHECK: - Type: GLOBAL 94# __stack_pointer 95# CHECK-NEXT: Globals: 96# CHECK-NEXT: - Index: 0 97# CHECK-NEXT: Type: I32 98# CHECK-NEXT: Mutable: true 99# CHECK-NEXT: InitExpr: 100# CHECK-NEXT: Opcode: I32_CONST 101# CHECK-NEXT: Value: 66592 102 103# __tls_base 104# CHECK-NEXT: - Index: 1 105# CHECK-NEXT: Type: I32 106# CHECK-NEXT: Mutable: true 107# CHECK-NEXT: InitExpr: 108# CHECK-NEXT: Opcode: I32_CONST 109# CHECK-NEXT: Value: 0 110 111# __tls_size 112# CHECK-NEXT: - Index: 2 113# CHECK-NEXT: Type: I32 114# CHECK-NEXT: Mutable: false 115# CHECK-NEXT: InitExpr: 116# CHECK-NEXT: Opcode: I32_CONST 117# CHECK-NEXT: Value: 12 118 119# __tls_align 120# CHECK-NEXT: - Index: 3 121# CHECK-NEXT: Type: I32 122# CHECK-NEXT: Mutable: false 123# CHECK-NEXT: InitExpr: 124# CHECK-NEXT: Opcode: I32_CONST 125# CHECK-NEXT: Value: 4 126 127 128# ASM-LABEL: <__wasm_init_tls>: 129# ASM-EMPTY: 130# ASM-NEXT: local.get 0 131# ASM-NEXT: global.set 1 132# ASM-NEXT: local.get 0 133# ASM-NEXT: i32.const 0 134# ASM-NEXT: i32.const 12 135# ASM-NEXT: memory.init 0, 0 136# call to __wasm_apply_global_tls_relocs 137# ASM-NEXT: call 3 138# ASM-NEXT: end 139 140# ASM-LABEL: <__wasm_apply_global_tls_relocs>: 141# ASM-EMPTY: 142# ASM-NEXT: global.get 1 143# ASM-NEXT: i32.const 0 144# ASM-NEXT: i32.add 145# ASM-NEXT: global.set 4 146# ASM-NEXT: end 147 148# ASM-LABEL: <tls1_addr>: 149# ASM-EMPTY: 150# ASM-NEXT: global.get 1 151# ASM-NEXT: i32.const 0 152# ASM-NEXT: i32.add 153# ASM-NEXT: end 154 155# ASM-LABEL: <tls2_addr>: 156# ASM-EMPTY: 157# ASM-NEXT: global.get 1 158# ASM-NEXT: i32.const 4 159# ASM-NEXT: i32.add 160# ASM-NEXT: end 161 162# ASM-LABEL: <tls3_addr>: 163# ASM-EMPTY: 164# ASM-NEXT: global.get 1 165# ASM-NEXT: i32.const 8 166# ASM-NEXT: i32.add 167# ASM-NEXT: end 168 169# ASM-LABEL: <tls_align>: 170# ASM-EMPTY: 171# ASM-NEXT: global.get 3 172# ASM-NEXT: end 173 174# Also verify TLS usage with --relocatable 175# RUN: wasm-ld --relocatable -o %t3.wasm %t.o 176# RUN: obj2yaml %t3.wasm | FileCheck %s --check-prefix=RELOC 177 178# RELOC: - Type: IMPORT 179# RELOC-NEXT: Imports: 180# RELOC-NEXT: - Module: env 181# RELOC-NEXT: Field: __tls_base 182# RELOC-NEXT: Kind: GLOBAL 183# RELOC-NEXT: GlobalType: I32 184# RELOC-NEXT: GlobalMutable: true 185# RELOC-NEXT: - Module: env 186# RELOC-NEXT: Field: __tls_align 187# RELOC-NEXT: Kind: GLOBAL 188# RELOC-NEXT: GlobalType: I32 189# RELOC-NEXT: GlobalMutable: false 190 191# RELOC: GlobalNames: 192# RELOC-NEXT: - Index: 0 193# RELOC-NEXT: Name: __tls_base 194# RELOC-NEXT: - Index: 1 195# RELOC-NEXT: Name: __tls_align 196# RELOC-NEXT: - Index: 2 197# RELOC-NEXT: Name: GOT.data.internal.tls1 198# RELOC-NEXT: DataSegmentNames: 199# RELOC-NEXT: - Index: 0 200# RELOC-NEXT: Name: .tdata 201# RELOC-NEXT: - Index: 1 202# RELOC-NEXT: Name: .bss.no_tls 203