lld/test/ELF/arm-got-relative.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -position-independent -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
   3 // RUN: ld.lld %t.o -shared -o %t
   4 // RUN: llvm-readobj -S --symbols --dyn-relocations %t | FileCheck %s
   5 // RUN: llvm-objdump --no-print-imm-hex -d --triple=armv7a-none-linux-gnueabi %t | FileCheck --check-prefix=CODE %s
   6  .syntax unified
   7  .text
   8  .globl _start
   9  .align 2
  10 _start:
  11  .type _start, %function
  12  ldr r3, .LGOT
  13  ldr r2, .LGOT+4
  14 .LPIC:
  15  add r0, pc, r3
  16  bx lr
  17  .align 2
  18 .LGOT:
  19  // gas implicitly uses (R_ARM_BASE_PREL) for _GLOBAL_OFFSET_TABLE_ in PIC
  20  // llvm-mc generates R_ARM_REL32, this will need updating when MC changes
  21  .word _GLOBAL_OFFSET_TABLE_ - (.LPIC+8)
  22  .word function(GOT)
  23
  24  .globl function
  25  .align 2
  26 function:
  27  .type function, %function
  28  bx lr
  29
  30 // CHECK: Dynamic Relocations {
  31 // CHECK-NEXT:  0x2020C R_ARM_GLOB_DAT function
  32
  33 // CHECK: Name: _GLOBAL_OFFSET_TABLE_
  34 // CHECK-NEXT:    Value: 0x2020C
  35 // CHECK-NEXT:    Size:
  36 // CHECK-NEXT:    Binding: Local
  37 // CHECK-NEXT:    Type: None
  38 // CHECK-NEXT:    Other [
  39 // CHECK-NEXT:      STV_HIDDEN
  40 // CHECK-NEXT:    ]
  41 // CHECK-NEXT:    Section: .got
  42
  43 // CODE: Disassembly of section .text:
  44 // CODE-EMPTY:
  45 // CODE-NEXT: <_start>:
  46 // CODE-NEXT:    101a0:        e59f3008       ldr     r3, [pc, #8]
  47 // CODE-NEXT:    101a4:        e59f2008       ldr     r2, [pc, #8]
  48 // CODE-NEXT:    101a8:        e08f0003       add     r0, pc, r3
  49 // CODE-NEXT:    101ac:        e12fff1e       bx      lr
  50 // (_GLOBAL_OFFSET_TABLE_ = 0x220c) - (0x11a8 + 8) = 0x105c
  51 // CODE-NEXT:    101b0:        5c 00 01 00
  52 // (Got(function) - GotBase = 0x0
  53 // CODE-NEXT:    101b4:        00 00 00 00