ref: 6c8c2b6b32f8b567703dea1aed5ea1fc9e5caf23
dir: /syscall-osx.s/
.globl _std$syscall
_std$syscall:
popq %rcx /* return address */
popq %rax /* call num */
pushq %rcx
syscall
pushq %rcx /* put the return address back */
ret