lld/test/MachO/arm64-objc-stubs-dyn.s

   1 # REQUIRES: aarch64
   2
   3 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %s -o %t.o
   4 # RUN: %lld -arch arm64 -lSystem -U _objc_msgSend -o %t.out %t.o
   5 # RUN: llvm-otool -vs __TEXT __objc_stubs %t.out | FileCheck %s
   6 # RUN: %lld -arch arm64 -lSystem -U _objc_msgSend -o %t.out %t.o -dead_strip
   7 # RUN: llvm-otool -vs __TEXT __objc_stubs %t.out | FileCheck %s
   8 # RUN: %lld -arch arm64 -lSystem -U _objc_msgSend -o %t.out %t.o -objc_stubs_fast
   9 # RUN: llvm-otool -vs __TEXT __objc_stubs %t.out | FileCheck %s
  10 # RUN: %lld -arch arm64 -lSystem -U _objc_msgSend -o %t.out %t.o -objc_stubs_small
  11 # RUN: llvm-otool -vs __TEXT __stubs  %t.out | FileCheck %s --check-prefix=STUB
  12 # RUN: llvm-otool -vs __TEXT __objc_stubs %t.out | FileCheck %s --check-prefix=SMALL
  13
  14 # Unlike arm64-objc-stubs.s, in this test, _objc_msgSend is not defined,
  15 #  which usually binds with libobjc.dylib.
  16 # 1. -objc_stubs_fast: No change as it uses GOT.
  17 # 2. -objc_stubs_small: Create a (shared) stub to invoke _objc_msgSend, to minimize the size.
  18
  19 # CHECK: Contents of (__TEXT,__objc_stubs) section
  20
  21 # CHECK-NEXT: _objc_msgSend$foo:
  22 # CHECK-NEXT: adrp    x1, 8 ; 0x100008000
  23 # CHECK-NEXT: ldr     x1, [x1, #0x10]
  24 # CHECK-NEXT: adrp    x16, 4 ; 0x100004000
  25 # CHECK-NEXT: ldr     x16, [x16]
  26 # CHECK-NEXT: br      x16
  27 # CHECK-NEXT: brk     #0x1
  28 # CHECK-NEXT: brk     #0x1
  29 # CHECK-NEXT: brk     #0x1
  30
  31 # CHECK-NEXT: _objc_msgSend$length:
  32 # CHECK-NEXT: adrp    x1, 8 ; 0x100008000
  33 # CHECK-NEXT: ldr     x1, [x1, #0x18]
  34 # CHECK-NEXT: adrp    x16, 4 ; 0x100004000
  35 # CHECK-NEXT: ldr     x16, [x16]
  36 # CHECK-NEXT: br      x16
  37 # CHECK-NEXT: brk     #0x1
  38 # CHECK-NEXT: brk     #0x1
  39 # CHECK-NEXT: brk     #0x1
  40
  41 # CHECK-EMPTY:
  42
  43 # STUB: Contents of (__TEXT,__stubs) section
  44 # STUB-NEXT:  adrp    x16, 8 ; 0x100008000
  45 # STUB-NEXT:  ldr     x16, [x16]
  46 # STUB-NEXT:  br      x16
  47
  48 # SMALL: Contents of (__TEXT,__objc_stubs) section
  49 # SMALL-NEXT: _objc_msgSend$foo:
  50 # SMALL-NEXT: adrp    x1, 8 ; 0x100008000
  51 # SMALL-NEXT: ldr     x1, [x1, #0x18]
  52 # SMALL-NEXT: b
  53 # SMALL-NEXT: _objc_msgSend$length:
  54 # SMALL-NEXT: adrp    x1, 8 ; 0x100008000
  55 # SMALL-NEXT: ldr     x1, [x1, #0x20]
  56 # SMALL-NEXT: b
  57
  58 .section  __TEXT,__objc_methname,cstring_literals
  59 lselref1:
  60   .asciz  "foo"
  61 lselref2:
  62   .asciz  "bar"
  63
  64 .section  __DATA,__objc_selrefs,literal_pointers,no_dead_strip
  65 .p2align  3
  66 .quad lselref1
  67 .quad lselref2
  68
  69 .text
  70
  71 .globl _main
  72 _main:
  73   bl  _objc_msgSend$length
  74   bl  _objc_msgSend$foo
  75   bl  _objc_msgSend$foo
  76   ret