xref: /llvm-project/compiler-rt/test/orc/TestCases/Darwin/x86-64/trivial-static-initializer.S (revision bb5f97e3ad10a0f8a62560890e5a87b4bc2c00bd)
1// Test that basic MachO static initializers work. The main function in this
2// test returns the value of 'x', which is initially 1 in the data section,
3// and reset to 0 if the _static_init function is run. If the static initializer
4// does not run then main will return 1, causing the test to be treated as a
5// failure.
6//
7// RUN: %clang -c -o %t %s
8// RUN: %llvm_jitlink %t
9
10	.section	__TEXT,__text,regular,pure_instructions
11	.build_version macos, 11, 0
12
13# main returns the value of 'x', which is defined as 1 in the data section..
14	.globl	_main
15	.p2align	4, 0x90
16_main:
17	movl	_x(%rip), %eax
18	retq
19
20# static initializer sets the value of 'x' to zero.
21	.section	__TEXT,__StaticInit,regular,pure_instructions
22	.p2align	4, 0x90
23_static_init:
24	movl	$0, _x(%rip)
25	retq
26
27	.section	__DATA,__data
28	.globl	_x
29	.p2align	2
30_x:
31	.long	1
32
33	.section	__DATA,__mod_init_func,mod_init_funcs
34	.p2align	3
35	.quad	_static_init
36
37.subsections_via_symbols
38