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in out

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Win 2024-06-12 13:38:38 +07:00
parent 0593429e8c
commit 63ba3e6da3
2 changed files with 15 additions and 1 deletions
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x86-64/in-out/in-out Executable file
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16
x86-64/in-out/in-out.asm
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@ -4,8 +4,22 @@ segment readable executable
entry $ entry $
; read from stdin ; read from stdin
xor rax, rax xor rax, rax ; is rax and rax equal to itself? yes? rax is set to 0 (for sys_read)
xor rdi, rdi ; same thing but rdi (for stdin)
mov rsi, buf ; direct addressing - move address of buf to rsi (buffer address)
mov rdx, 80 ; buffer size
syscall
; write to stdout
mov rax, 1 ; sys_write
mov rdi, 1 ; stdout
mov rdx, 80
syscall
; exit program
xor rdi, rdi ; exit code 0
mov rax, 60 ; sys_exit
syscall
segment readable writable segment readable writable
buf rb 80 buf rb 80