lld/test/ELF/arm-exidx-mapping-symbols.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-readelf -s %t2 | FileCheck %s
   5 // CHECK-NOT: $d.exidx.foo
   6
   7 /// Test that symbols which point to input .ARM.exidx sections are eliminated.
   8 /// These symbols might be produced, for example, by GNU tools.
   9
  10     .syntax unified
  11     .section .text.foo,"axG",%progbits,foo,comdat
  12 foo:
  13     bx lr
  14
  15 /// GNU as adds mapping symbols "$d" for .ARM.exidx sections it generates.
  16 /// llvm-mc does not do that, so reproduce that manually.
  17     .section .ARM.exidx.text.foo,"ao?",%0x70000001,.text.foo
  18 $d.exidx.foo:
  19     .reloc 0, R_ARM_NONE, __aeabi_unwind_cpp_pr0
  20     .long .text.foo(PREL31)
  21     .long 0x80b0b0b0
  22
  23     .section .text.h,"ax"
  24     .global __aeabi_unwind_cpp_pr0
  25 __aeabi_unwind_cpp_pr0:
  26     bx lr