lld/test/wasm/tls-relocations.s

   1 # RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
   2
   3 .section data,"",@
   4   .int32 41
   5 data_sym:
   6   .int32 42
   7   .size data_sym, 4
   8
   9 # TLS data section of size 16 with as relocations at offset 8 and 12
  10 .section tls_sec,"T",@
  11 .globl  tls_sym
  12 .p2align  2
  13   .int32 0x50
  14 tls_sym:
  15   .int32 0x51
  16   .int32 data_sym
  17   .int32 tls_sym
  18   .size tls_sym, 4
  19
  20 .section  .custom_section.target_features,"",@
  21   .int8 2
  22   .int8 43
  23   .int8 7
  24   .ascii  "atomics"
  25   .int8 43
  26   .int8 11
  27   .ascii  "bulk-memory"
  28
  29 # RUN: wasm-ld --experimental-pic -pie -no-gc-sections --shared-memory --no-entry -o %t.wasm %t.o
  30 # RUN: obj2yaml %t.wasm | FileCheck %s
  31 # RUN: llvm-objdump -d --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck --check-prefix=ASM %s --
  32
  33 # CHECK:       - Type:            GLOBAL
  34
  35 # __tls_base
  36 # CHECK-NEXT:    Globals:
  37 # CHECK-NEXT:      - Index:           3
  38 # CHECK-NEXT:        Type:            I32
  39 # CHECK-NEXT:        Mutable:         true
  40 # CHECK-NEXT:        InitExpr:
  41 # CHECK-NEXT:          Opcode:          I32_CONST
  42 # CHECK-NEXT:          Value:           0
  43
  44 # __tls_size
  45 # CHECK-NEXT:      - Index:           4
  46 # CHECK-NEXT:        Type:            I32
  47 # CHECK-NEXT:        Mutable:         false
  48 # CHECK-NEXT:        InitExpr:
  49 # CHECK-NEXT:          Opcode:          I32_CONST
  50 # CHECK-NEXT:          Value:           16
  51
  52 # __tls_align
  53 # CHECK-NEXT:      - Index:           5
  54 # CHECK-NEXT:        Type:            I32
  55 # CHECK-NEXT:        Mutable:         false
  56 # CHECK-NEXT:        InitExpr:
  57 # CHECK-NEXT:          Opcode:          I32_CONST
  58 # CHECK-NEXT:          Value:           4
  59
  60 # ASM:       <__wasm_init_tls>:
  61 # ASM-EMPTY:
  62 # ASM-NEXT:                 local.get 0
  63 # ASM-NEXT:                 global.set  3
  64 # ASM-NEXT:                 local.get 0
  65 # ASM-NEXT:                 i32.const 0
  66 # ASM-NEXT:                 i32.const 16
  67 # ASM-NEXT:                 memory.init 0, 0
  68 # call to __wasm_apply_tls_relocs
  69 # ASM-NEXT:                 call  4
  70 # ASM-NEXT:                 end
  71
  72 # ASM: <__wasm_apply_tls_relocs>:
  73 # ASM-EMPTY:
  74 # ASM-NEXT:                 i32.const 8
  75 # ASM-NEXT:                 global.get  3
  76 # ASM-NEXT:                 i32.add
  77 # ASM-NEXT:                 global.get  1
  78 # ASM-NEXT:                 i32.const 20
  79 # ASM-NEXT:                 i32.add
  80 # ASM-NEXT:                 i32.store 0
  81 # ASM-NEXT:                 i32.const 12
  82 # ASM-NEXT:                 global.get  3
  83 # ASM-NEXT:                 i32.add
  84 # ASM-NEXT:                 global.get  3
  85 # ASM-NEXT:                 i32.const 4
  86 # ASM-NEXT:                 i32.add
  87 # ASM-NEXT:                 i32.store 0
  88 # ASM-NEXT:                 end