lld/test/ELF/arm-copy.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
   3 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/relocation-copy-arm.s -o %t2.o
   4 // RUN: ld.lld -shared %t2.o -soname fixed-length-string.so -o %t2.so
   5 // RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t3
   6 // RUN: llvm-readobj -S -r --expand-relocs --symbols %t3 | FileCheck %s
   7 // RUN: llvm-objdump -d --triple=armv7a-none-linux-gnueabi --no-show-raw-insn %t3 | FileCheck --check-prefix=CODE %s
   8 // RUN: llvm-objdump -s --triple=armv7a-none-linux-gnueabi --section=.rodata %t3 | FileCheck --check-prefix=RODATA %s
   9
  10 // Copy relocations R_ARM_COPY are required for y and z
  11  .syntax unified
  12  .text
  13  .globl _start
  14 _start:
  15  movw r2,:lower16: y
  16  movt r2,:upper16: y
  17  ldr r3,[pc,#4]
  18  ldr r3,[r3,#0]
  19  .rodata
  20  .word z
  21
  22 // CHECK:     Name: .bss
  23 // CHECK-NEXT:     Type: SHT_NOBITS
  24 // CHECK-NEXT:     Flags [
  25 // CHECK-NEXT:       SHF_ALLOC
  26 // CHECK-NEXT:       SHF_WRITE
  27 // CHECK-NEXT:     ]
  28 // CHECK-NEXT:     Address: 0x40220
  29 // CHECK-NEXT:     Offset:
  30 // CHECK-NEXT:     Size: 8
  31 // CHECK-NEXT:     Link:
  32 // CHECK-NEXT:     Info:
  33 // CHECK-NEXT:     AddressAlignment: 16
  34
  35 // CHECK: Relocations [
  36 // CHECK-NEXT:  Section {{.*}} .rel.dyn {
  37 // CHECK-NEXT:    Relocation {
  38 // CHECK-NEXT:      Offset: 0x40220
  39 // CHECK-NEXT:      Type: R_ARM_COPY
  40 // CHECK-NEXT:      Symbol: y
  41 // CHECK-NEXT:    }
  42 // CHECK-NEXT:    Relocation {
  43 // CHECK-NEXT:      Offset: 0x40224
  44 // CHECK-NEXT:      Type: R_ARM_COPY
  45 // CHECK-NEXT:      Symbol: z
  46 // CHECK-NEXT:    }
  47 // CHECK-NEXT:  }
  48
  49 // CHECK: Symbols [
  50 // CHECK:     Name: y
  51 // CHECK-NEXT:    Value: 0x40220
  52 // CHECK-NEXT:    Size: 4
  53 // CHECK-NEXT:    Binding: Global
  54 // CHECK-NEXT:    Type: Object
  55 // CHECK-NEXT:    Other:
  56 // CHECK-NEXT:    Section: .bss
  57 // CHECK:    Name: z
  58 // CHECK-NEXT:    Value: 0x40224
  59 // CHECK-NEXT:    Size: 4
  60 // CHECK-NEXT:    Binding: Global
  61 // CHECK-NEXT:    Type: Object
  62 // CHECK-NEXT:    Other: 0
  63 // CHECK-NEXT:    Section: .bss
  64
  65 // CODE: Disassembly of section .text:
  66 // CODE-EMPTY:
  67 // CODE-NEXT: <_start>:
  68 /// S + A = 0x40220 + 0 = 65536 * 1 + 544
  69 // CODE-NEXT:   201b4:       movw    r2, #544
  70 // CODE-NEXT:   201b8:       movt    r2, #4
  71 // CODE-NEXT:   201bc:       ldr     r3, [pc, #4]
  72 // CODE-NEXT:   201c0:       ldr     r3, [r3]
  73
  74
  75 // RODATA: Contents of section .rodata:
  76 /// S(z) = 0x40004
  77 // RODATA-NEXT: 101b0 24020400