mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
28 lines
829 B
ArmAsm
28 lines
829 B
ArmAsm
|
# extern int _rb_wasm_setjmp_internal(rb_wasm_jmp_buf *env);
|
||
|
|
.functype _rb_wasm_setjmp_internal (i32) -> (i32)
|
||
|
|
# extern int __stack_pointer;
|
||
|
|
.globaltype __stack_pointer, i32
|
||
|
|
|
||
|
|
# A wrapper of _rb_wasm_setjmp_internal to save and restore stack pointer
|
||
|
|
# This cannot be implemented in C because there is no way to manipulate stack pointer
|
||
|
|
# without C-epilogue.
|
||
|
|
|
||
|
|
# extern int _rb_wasm_setjmp(rb_wasm_jmp_buf *env);
|
||
|
|
.section .text._rb_wasm_setjmp,"",@
|
||
|
|
.globl _rb_wasm_setjmp
|
||
|
|
.type _rb_wasm_setjmp,@function
|
||
|
|
_rb_wasm_setjmp:
|
||
|
|
.functype _rb_wasm_setjmp (i32) -> (i32)
|
||
|
|
.local i32, i32
|
||
|
|
# save sp (this local is stored in asyncify stack and restored when rewinding)
|
||
|
|
global.get __stack_pointer
|
||
|
|
local.set 1
|
||
|
|
|
||
|
|
local.get 0
|
||
|
|
call _rb_wasm_setjmp_internal
|
||
|
|
|
||
|
|
# restore sp
|
||
|
|
local.get 1
|
||
|
|
global.set __stack_pointer
|
||
|
|
end_function
|