lld/test/ELF/got32x-i386.s

   1 # REQUIRES: x86
   2
   3 ## i386-got32x-baseless.elf is a file produced using GNU as v.2.27
   4 ## using following code and command line:
   5 ## (as --32 -o base.o base.s)
   6 ##
   7 ## .text
   8 ## .globl foo
   9 ## .type foo, @function
  10 ## foo:
  11 ##  nop
  12 ##
  13 ## _start:
  14 ##  movl foo@GOT, %eax
  15 ##  movl foo@GOT, %ebx
  16 ##  movl foo@GOT(%eax), %eax
  17 ##  movl foo@GOT(%ebx), %eax
  18 ##
  19 ## Result file contains four R_386_GOT32X relocations. Generated code
  20 ## is also a four mov instructions. And first two has no base register:
  21 ## <_start>:
  22 ##   1: 8b 05 00 00 00 00 mov 0x0,%eax
  23 ##   7: 8b 1d 00 00 00 00 mov 0x0,%ebx
  24 ##   d: 8b 80 00 00 00 00 mov 0x0(%eax),%eax
  25 ##  13: 8b 83 00 00 00 00 mov 0x0(%ebx),%eax
  26 ##
  27 ## R_386_GOT32X is computed as G + A - GOT, but if it used without base
  28 ## register, it should be calculated as G + A. Using without base register
  29 ## is only allowed for non-PIC code.
  30 ##
  31 # RUN: ld.lld %S/Inputs/i386-got32x-baseless.elf -o %t1
  32 # RUN: llvm-objdump --no-print-imm-hex --section-headers -d %t1 | FileCheck %s
  33
  34 ## 73728 == 0x12000 == ADDR(.got)
  35 # CHECK: Sections:
  36 # CHECK:  Name     Size     VMA
  37 # CHECK:  .got.plt 0000000c 00403134
  38 # CHECK:       <_start>:
  39 # CHECK-NEXT:   401115: 8b 05 {{.*}} movl 4202800, %eax
  40 # CHECK-NEXT:   40111b: 8b 1d {{.*}} movl 4202800, %ebx
  41 # CHECK-NEXT:   401121: 8b 80 {{.*}} movl -4100(%eax), %eax
  42 # CHECK-NEXT:   401127: 8b 83 {{.*}} movl -4100(%ebx), %eax
  43
  44 # RUN: not ld.lld %S/Inputs/i386-got32x-baseless.elf -o /dev/null -pie 2>&1 | \
  45 # RUN:   FileCheck %s --check-prefix=ERR
  46 # ERR-COUNT-2: error: relocation R_386_GOT32X cannot be used against symbol 'foo'; recompile with -fPIC