41 lines
419 B
ArmAsm
41 lines
419 B
ArmAsm
|
bits 64
|
||
|
|
section .text
|
||
|
|
global putchar
|
||
|
|
global getchar
|
||
|
|
global _start
|
||
|
|
extern main
|
||
|
|
|
||
|
|
align 8
|
||
|
|
_start:
|
||
|
|
call main
|
||
|
|
jmp $
|
||
|
|
|
||
|
|
align 8
|
||
|
|
putchar:
|
||
|
|
mov rax, rdi
|
||
|
|
mov [buf], eax
|
||
|
|
mov rax, 4 ; sys_write
|
||
|
|
mov rdi, 1 ; stdout
|
||
|
|
mov rsi, buf ; address
|
||
|
|
mov rdx, 1 ; 1 byte
|
||
|
|
syscall
|
||
|
|
ret
|
||
|
|
|
||
|
|
align 8
|
||
|
|
getchar:
|
||
|
|
mov rax, 3
|
||
|
|
mov rdi, 0
|
||
|
|
mov rsi, buf
|
||
|
|
mov rdx, 1
|
||
|
|
syscall
|
||
|
|
mov rax, 0
|
||
|
|
mov eax, [buf]
|
||
|
|
ret
|
||
|
|
|
||
|
|
section .data
|
||
|
|
buf:
|
||
|
|
dd 0
|
||
|
|
dd 0
|
||
|
|
dd 0
|
||
|
|
dd 0
|