lld/test/ELF/arm-tls-gd-nonpreemptible.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
   3 // RUN: ld.lld %t -o %t2
   4 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
   5 // RUN: llvm-objdump -s %t2 | FileCheck %s
   6 // RUN: ld.lld %t --shared -o %t3.so
   7 // RUN: llvm-objdump -s %t3.so | FileCheck --check-prefix=CHECK-SHARED %s
   8
   9 /// For an executable, we write the module index 1 and the offset into the TLS
  10 /// directly into the GOT. For a shared library we can only write the offset
  11 /// into the TLS directly if the symbol is non-preemptible
  12
  13  .text
  14  .syntax unified
  15  .globl __tls_get_addr
  16  .type __tls_get_addr,%function
  17 __tls_get_addr:
  18  bx lr
  19
  20  .globl  _start
  21  .p2align        2
  22  .type   _start,%function
  23 func:
  24 .L0:
  25  nop
  26 .L1:
  27  nop
  28 .L2:
  29  nop
  30 .L3:
  31  nop
  32  .p2align        2
  33 /// Generate R_ARM_TLS_GD32 relocations
  34 /// These can be resolved at static link time for executables as 1 is always the
  35 /// module index and the offset into tls is known at static link time
  36 .Lt0: .word   x1(TLSGD) + (. - .L0 - 8)
  37 .Lt1: .word   x2(TLSGD) + (. - .L1 - 8)
  38 .Lt2: .word   x3(TLSGD) + (. - .L2 - 8)
  39 .Lt3: .word   x4(TLSGD) + (. - .L3 - 8)
  40  .hidden x1
  41  .globl  x1
  42  .hidden x2
  43  .globl  x2
  44  .globl  x3
  45  .globl  x4
  46
  47  .section       .tdata,"awT",%progbits
  48  .p2align  2
  49 .TLSSTART:
  50  .type  x1, %object
  51 x1:
  52  .word 10
  53  .type  x2, %object
  54 x2:
  55  .word 20
  56
  57  .section       .tbss,"awT",%nobits
  58  .p2align 2
  59  .type  x3, %object
  60 x3:
  61  .space 4
  62  .type  x4, %object
  63 x4:
  64  .space 4
  65
  66 // CHECK: Contents of section .got:
  67 // CHECK-NEXT:  30140 01000000 00000000 01000000 04000000
  68 // CHECK-NEXT:  30150 01000000 08000000 01000000 0c000000
  69
  70 // CHECK-SHARED: Contents of section .got:
  71 // CHECK-SHARED-NEXT:  202a8 00000000 00000000 00000000 04000000
  72 // CHECK-SHARED-NEXT:  202b8 00000000 00000000 00000000 00000000