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

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -filetype=obj  -arm-add-build-attributes -triple=armv7a-linux-gnueabihf %p/Inputs/arm-shared.s -o %t-lib.o
   3 // RUN: llvm-mc -filetype=obj -arm-add-build-attributes -triple=armv7a-linux-gnueabihf %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 : { *(.rel.dyn) *(.rel.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.
  20
  21 .text
  22 .globl indirect
  23 .type indirect,%gnu_indirect_function
  24 indirect:
  25  bx lr
  26
  27 .globl bar2 // from Inputs/arm-shared.s
  28
  29 .text
  30 .globl _start
  31 .type _start,%function
  32 main:
  33  bl indirect
  34  bl bar2
  35  .word indirect(got)
  36  .word bar2(got)
  37  bx lr
  38
  39 // CHECK:     Name: .rela.dyn
  40 // CHECK-NEXT:     Type: SHT_REL
  41 // CHECK-NEXT:     Flags [
  42 // CHECK-NEXT:       SHF_ALLOC
  43 // CHECK-NEXT:       SHF_INFO_LINK
  44 // CHECK-NEXT:     ]
  45 // CHECK-NEXT:     Address:
  46 // CHECK-NEXT:     Offset:
  47 // CHECK-NEXT:     Size: 24
  48
  49 // CHECK: 0x00000012 RELSZ                24 (bytes)
  50 // CHECK: 0x00000002 PLTRELSZ             8 (bytes)