banan-os/kernel/arch/x86_64/Signal.S

54 lines
660 B
ArmAsm

.section .userspace, "aw"
#include <sys/syscall.h>
// stack contains
// return address
// signal number
// signal handler
.global signal_trampoline
signal_trampoline:
pushq %rax
pushq %rbx
pushq %rcx
pushq %rdx
pushq %rbp
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
pushq %r12
pushq %r13
pushq %r14
pushq %r15
// This is 16 byte aligned
movq 128(%rsp), %rdi
movq 120(%rsp), %rax
call *%rax
popq %r15
popq %r14
popq %r13
popq %r12
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rbp
popq %rdx
popq %rcx
popq %rbx
popq %rax
addq $16, %rsp
// return over red-zone
ret $128