lld/test/ELF/i386-tls-opt.s

   1 // REQUIRES: x86
   2 // RUN: llvm-mc -filetype=obj -triple=i686 %s -o %t.o
   3 // RUN: ld.lld %t.o -o %t1
   4 // RUN: llvm-readobj -r %t1 | FileCheck --check-prefix=NORELOC %s
   5 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t1 | FileCheck --check-prefix=DISASM %s
   6
   7 // NORELOC:      Relocations [
   8 // NORELOC-NEXT: ]
   9
  10 // DISASM:      Disassembly of section .text:
  11 // DISASM-EMPTY:
  12 // DISASM-NEXT: <_start>:
  13 // LD -> LE:
  14 // DISASM-NEXT:   movl %gs:0, %eax
  15 // DISASM-NEXT:   nop
  16 // DISASM-NEXT:   leal (%esi,%eiz), %esi
  17 // DISASM-NEXT:   leal -8(%eax), %edx
  18 // DISASM-NEXT:   movl %gs:0, %eax
  19 // DISASM-NEXT:   nop
  20 // DISASM-NEXT:   leal (%esi,%eiz), %esi
  21 // DISASM-NEXT:   leal -4(%eax), %edx
  22 // DISASM-NEXT:   movl %gs:0, %eax
  23 // DISASM-NEXT:   leal (%esi), %esi
  24 // DISASM-NEXT:   movl -4(%eax), %edx
  25 // IE -> LE:
  26 // 4294967288 == 0xFFFFFFF8
  27 // 4294967292 == 0xFFFFFFFC
  28 // DISASM-NEXT:   movl %gs:0, %eax
  29 // DISASM-NEXT:   movl $4294967288, %eax
  30 // DISASM-NEXT:   movl %gs:0, %eax
  31 // DISASM-NEXT:   movl $4294967292, %eax
  32 // DISASM-NEXT:   movl %gs:0, %eax
  33 // DISASM-NEXT:   leal -8(%eax), %eax
  34 // DISASM-NEXT:   movl %gs:0, %eax
  35 // DISASM-NEXT:   leal -4(%eax), %eax
  36 .type tls0,@object
  37 .section .tbss,"awT",@nobits
  38 .globl tls0
  39 .align 4
  40 tls0:
  41  .long 0
  42  .size tls0, 4
  43
  44 .type  tls1,@object
  45 .globl tls1
  46 .align 4
  47 tls1:
  48  .long 0
  49  .size tls1, 4
  50
  51 .section .text
  52 .globl ___tls_get_addr
  53 .type ___tls_get_addr,@function
  54 ___tls_get_addr:
  55
  56 .section .text
  57 .globl _start
  58 _start:
  59 //LD -> LE:
  60 leal tls0@tlsldm(%ebx),%eax
  61 call ___tls_get_addr@plt
  62 leal tls0@dtpoff(%eax),%edx
  63 leal tls1@tlsldm(%ebx),%eax
  64 call ___tls_get_addr@plt
  65 leal tls1@dtpoff(%eax),%edx
  66 // -fno-plt LD -> LE
  67 leal tls1@tlsldm(%edx),%eax
  68 call *___tls_get_addr@GOT(%edx)
  69 movl tls1@dtpoff(%eax), %edx
  70 //IE -> LE:
  71 movl %gs:0,%eax
  72 movl tls0@gotntpoff(%ebx),%eax
  73 movl %gs:0,%eax
  74 movl tls1@gotntpoff(%ebx),%eax
  75 movl %gs:0,%eax
  76 addl tls0@gotntpoff(%ebx),%eax
  77 movl %gs:0,%eax
  78 addl tls1@gotntpoff(%ebx),%eax