lld/test/ELF/ppc64-toc-relax-ifunc.s

   1 # REQUIRES: ppc
   2
   3 # RUN: llvm-mc -filetype=obj -triple=powerpc64le %s -o %t.o
   4 # RUN: echo '.globl ifunc; .type ifunc, %gnu_indirect_function; ifunc:' | \
   5 # RUN:   llvm-mc -filetype=obj -triple=powerpc64le - -o %t1.o
   6 # RUN: ld.lld %t.o %t1.o -o %t
   7 # RUN: llvm-readelf -S -s %t | FileCheck --check-prefix=SEC %s
   8 # RUN: llvm-readelf -x .toc %t | FileCheck --check-prefix=HEX %s
   9 # RUN: llvm-objdump -d %t | FileCheck --check-prefix=DIS %s
  10
  11 ## ifunc is a non-preemptable STT_GNU_IFUNC. The R_PPC64_ADDR64 in .toc
  12 ## creates a canonical PLT for it and changes its type to STT_FUNC. We can thus
  13 ## still perform toc-indirect to toc-relative relaxation because the distance
  14 ## to the address of the canonical PLT is fixed.
  15
  16 # SEC: .text PROGBITS 00000000100101e0
  17 # SEC: .plt  NOBITS   0000000010030200
  18 # SEC: 00000000100101e8 0 FUNC GLOBAL DEFAULT 3 ifunc
  19
  20 ## .toc[0] stores the address of the canonical PLT.
  21 # HEX:      section '.toc':
  22 # HEX-NEXT: 0x100201f8 e8010110 00000000
  23
  24 # REL:      .rela.dyn {
  25 # REL-NEXT:   0x100301f8 R_PPC64_IRELATIVE - 0x100101e8
  26 # REL-NEXT: }
  27
  28 # DIS: addi 3, 3,
  29
  30 addis 3, 2, .toc@toc@ha
  31 ld 3, .toc@toc@l(3)
  32
  33 .section .toc,"aw",@progbits
  34   .quad ifunc