File: trivial-static-initializer.S

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// Test that basic MachO static initializers work. The main function in this
// test returns the value of 'x', which is initially 1 in the data section,
// and reset to 0 if the _static_init function is run. If the static initializer
// does not run then main will return 1, causing the test to be treated as a
// failure.
//
// RUN: %clang -c -o %t %s
// RUN: %llvm_jitlink %t

  .section  __TEXT,__text,regular,pure_instructions
  .build_version macos, 12, 0 sdk_version 12, 0

# static initializer sets the value of 'x' to zero.
  .globl  _static_init
  .p2align  2
_static_init:
  .cfi_startproc
; %bb.0:
  adrp  x8, _x@PAGE
  str wzr, [x8, _x@PAGEOFF]
  ret
  .cfi_endproc

# main returns the value of 'x', which is defined as 1 in the data section..
  .globl  _main
  .p2align  2
_main:
  sub sp, sp, #16
  str wzr, [sp, #12]
  adrp  x8, _x@PAGE
  ldr w0, [x8, _x@PAGEOFF]
  add sp, sp, #16
  ret

  .section  __DATA,__data
  .globl  _x
  .p2align  2
_x:
  .long 1

  .section  __DATA,__mod_init_func,mod_init_funcs
  .p2align  3
  .quad _static_init
.subsections_via_symbols