lld/test/MachO/arm64-relocs.s

   1 # REQUIRES: aarch64
   2 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %s -o %t.o
   3 # RUN: %lld -dylib -arch arm64 -lSystem -o %t %t.o
   4 # RUN: llvm-objdump --syms %t > %t.objdump
   5 # RUN: llvm-objdump --no-print-imm-hex --macho -d --section=__const %t >> %t.objdump
   6 # RUN: FileCheck %s < %t.objdump
   7
   8 # CHECK-LABEL: SYMBOL TABLE:
   9 # CHECK-DAG:   [[#%x,PTR_1:]] l     O __DATA_CONST,__const _ptr_1
  10 # CHECK-DAG:   [[#%x,PTR_2:]] l     O __DATA_CONST,__const _ptr_2
  11 # CHECK-DAG:   [[#%x,BAR:]]   g     F __TEXT,__text _bar
  12 # CHECK-DAG:   [[#%x,BAZ:]]   g     O __DATA,__data _baz
  13
  14 # CHECK-LABEL: _foo:
  15 ## BRANCH26 relocations are 4-byte aligned, so 123 is truncated to 120
  16 # CHECK-NEXT:  bl   0x[[#BAR+120]]
  17 ## PAGE21 relocations are aligned to 4096 bytes
  18 # CHECK-NEXT:  adrp x2, [[#]] ; 0x[[#BAZ+4096-128]]
  19 # CHECK-NEXT:  ldr  x2, [x2, #128]
  20 # CHECK-NEXT:  adrp x3, 8 ; 0x8000
  21 # CHECK-NEXT:  ldr  q0, [x3, #144]
  22 # CHECK-NEXT:  ret
  23
  24 # CHECK-LABEL: Contents of (__DATA_CONST,__const) section
  25 # CHECK:       [[#PTR_1]]  {{0*}}[[#BAZ]]     00000000 00000000 00000000
  26 # CHECK:       [[#PTR_2]]  {{0*}}[[#BAZ+123]] 00000000 00000000 00000000
  27
  28 .text
  29 .globl _foo, _bar, _baz, _quux
  30 .p2align 2
  31 _foo:
  32   ## Generates ARM64_RELOC_BRANCH26 and ARM64_RELOC_ADDEND
  33   bl _bar + 123
  34   ## Generates ARM64_RELOC_PAGE21 and ADDEND
  35   adrp x2, _baz@PAGE + 4097
  36   ## Generates ARM64_RELOC_PAGEOFF12
  37   ldr x2, [x2, _baz@PAGEOFF]
  38
  39   ## Generates ARM64_RELOC_PAGE21
  40   adrp x3, _quux@PAGE
  41   ## Generates ARM64_RELOC_PAGEOFF12 with internal slide 4
  42   ldr q0, [x3, _quux@PAGEOFF]
  43   ret
  44
  45 .p2align 2
  46 _bar:
  47   ret
  48
  49 .data
  50 .space 128
  51 _baz:
  52 .space 1
  53
  54 .p2align 4
  55 _quux:
  56 .quad 0
  57 .quad 80
  58
  59 .section __DATA_CONST,__const
  60 ## These generate ARM64_RELOC_UNSIGNED symbol relocations. llvm-mc seems to
  61 ## generate UNSIGNED section relocations only for compact unwind sections, so
  62 ## those relocations are being tested in compact-unwind.s.
  63 _ptr_1:
  64   .quad _baz
  65   .space 8
  66 _ptr_2:
  67   .quad _baz + 123
  68   .space 8
  69
  70 .subsections_via_symbols