lld/test/ELF/pack-dyn-relocs-ifunc.s

   1 # REQUIRES: aarch64
   2 ## Prior to Android V, there was a bug that caused RELR relocations to be
   3 ## applied after packed relocations. This meant that resolvers referenced by
   4 ## IRELATIVE relocations in the packed relocation section would read unrelocated
   5 ## globals when --pack-relative-relocs=android+relr is enabled. Work around this
   6 ## by placing IRELATIVE in .rela.plt.
   7
   8 # RUN: rm -rf %t && split-file %s %t && cd %t
   9 # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-android a.s -o a.o
  10 # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-android b.s -o b.o
  11 # RUN: ld.lld -shared b.o -o b.so
  12 # RUN: ld.lld -pie --pack-dyn-relocs=android+relr -z separate-loadable-segments a.o b.so -o a
  13 # RUN: llvm-readobj -r a | FileCheck %s
  14 # RUN: llvm-objdump -d a | FileCheck %s --check-prefix=ASM
  15
  16 # CHECK:      .relr.dyn {
  17 # CHECK-NEXT:   0x30000 R_AARCH64_RELATIVE -
  18 # CHECK-NEXT: }
  19 # CHECK:      .rela.plt {
  20 # CHECK-NEXT:   0x30020 R_AARCH64_JUMP_SLOT bar 0x0
  21 # CHECK-NEXT:   0x30028 R_AARCH64_IRELATIVE - 0x10000
  22 # CHECK-NEXT: }
  23
  24 # ASM:      <.iplt>:
  25 # ASM-NEXT:   adrp    x16, 0x30000
  26 # ASM-NEXT:   ldr     x17, [x16, #0x28]
  27 # ASM-NEXT:   add     x16, x16, #0x28
  28 # ASM-NEXT:   br      x17
  29
  30 #--- a.s
  31 .text
  32 .type foo, %gnu_indirect_function
  33 .globl foo
  34 foo:
  35   ret
  36
  37 .globl _start
  38 _start:
  39   bl foo
  40   bl bar
  41
  42 .data
  43 .balign 8
  44 .quad .data
  45
  46 #--- b.s
  47 .globl bar
  48 bar:
  49   ret