lld/test/ELF/aarch64-combined-dynrel-ifunc.s

   1 // REQUIRES: aarch64
   2 // RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/shared.s -o %t-lib.o
   3 // RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %s -o %t.o
   4 // RUN: ld.lld %t-lib.o --shared -o %t.so
   5 // RUN: echo "SECTIONS { \
   6 // RUN:         .text : { *(.text) } \
   7 // RUN:         .rela.dyn : { *(.rela.dyn) *(.rela.plt) } \
   8 // RUN: } " > %t.script
   9 // RUN: ld.lld %t.o -o %t.axf %t.so --script %t.script
  10 // RUN: llvm-readobj --section-headers --dynamic-table %t.axf | FileCheck %s
  11
  12 // The linker script above combines the .rela.dyn and .rela.plt into a single
  13 // table. ELF is clear that the DT_PLTRELSZ should match the subset of
  14 // relocations that is associated with the PLT. It is less clear about what
  15 // the value of DT_RELASZ should be. ELF implies that it should be the size
  16 // of the single table so that DT_RELASZ includes DT_PLTRELSZ. The loader in
  17 // glibc permits this as long as .rela.plt comes after .rela.dyn in the
  18 // combined table. In the ARM case irelative relocations do not count as PLT
  19 // relocs. In the AArch64 case irelative relocations count as PLT relocs.
  20
  21 .text
  22 .globl indirect
  23 .type indirect,@gnu_indirect_function
  24 indirect:
  25  ret
  26
  27 .globl bar // from Inputs/shared.s
  28
  29 .text
  30 .globl _start
  31 .type _start,@function
  32 main:
  33  bl indirect
  34  bl bar
  35  adrp x8, :got:indirect
  36  ldr  x8, [x8, :got_lo12:indirect]
  37  adrp    x8, :got:bar
  38  ldr     x8, [x8, :got_lo12:bar]
  39  ret
  40
  41 // CHECK:     Name: .rela.dyn
  42 // CHECK-NEXT:     Type: SHT_RELA
  43 // CHECK-NEXT:     Flags [
  44 // CHECK-NEXT:       SHF_ALLOC
  45 // CHECK-NEXT:       SHF_INFO_LINK
  46 // CHECK-NEXT:     ]
  47 // CHECK-NEXT:     Address:
  48 // CHECK-NEXT:     Offset:
  49 // CHECK-NEXT:     Size: 72
  50
  51 // CHECK:      0x0000000000000008 RELASZ               72
  52 // CHECK:      0x0000000000000002 PLTRELSZ             24