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.section .text
.global _syscall
.type _syscall, @function
_syscall:
push %rbx // preserve registers
push %rsi
push %rdi
push %rbp
// NOT the calling convention TODO you lazy fuck
mov 20(%rsp), %rax
mov 24(%rsp), %rbx
mov %rsp, %rcx
mov $_syscall_ret, %rdx
mov 28(%rsp), %rsi
mov 32(%rsp), %rdi
mov 36(%rsp), %rbp
sysenter
_syscall_ret:
pop %rbp
pop %rdi
pop %rsi
pop %rbx
ret
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