test/MC/MachO/ARM/long-call-branch-island-relocation.s

   1 @ RUN: llvm-mc -n -triple armv7-apple-darwin10 %s -filetype=obj -o %t.o
   2 @ RUN: llvm-readobj -r --expand-relocs < %t.o | FileCheck %s
   3
   4 @ rdar://12359919
   5
   6         .syntax unified
   7         .text
   8
   9         .globl  _bar
  10         .align  2
  11         .code   16
  12         .thumb_func     _bar
  13 _bar:
  14         push    {r7, lr}
  15         mov     r7, sp
  16         bl      _foo
  17         pop     {r7, pc}
  18
  19
  20 _junk:
  21 @ Make the _foo symbol sufficiently far away to force the 'bl' relocation
  22 @ above to be out of range. On Darwin, the assembler deals with this by
  23 @ generating an external relocation so the linker can create a branch
  24 @ island.
  25
  26   .space 20000000
  27
  28   .section      __TEXT,initcode,regular,pure_instructions
  29
  30         .globl  _foo
  31         .align  2
  32         .code   16
  33 _foo:
  34         push    {r7, lr}
  35         mov     r7, sp
  36         pop     {r7, pc}
  37
  38
  39 @ CHECK: File: <stdin>
  40 @ CHECK: Format: Mach-O arm
  41 @ CHECK: Arch: arm
  42 @ CHECK: AddressSize: 32bit
  43 @ CHECK: Relocations [
  44 @ CHECK:   Section __text {
  45 @ CHECK:     Relocation {
  46 @ CHECK:       Offset: 0x4
  47 @ CHECK:       PCRel: 1
  48 @ CHECK:       Length: 2
  49 @ CHECK:       Type: ARM_THUMB_RELOC_BR22 (6)
  50 @ CHECK:       Symbol: _foo (2)
  51 @ CHECK:     }
  52 @ CHECK:   }
  53 @ CHECK: ]