From 63ba3e6da3c3b66bd42bfba51a0d789a3b9e2a69 Mon Sep 17 00:00:00 2001
From: winsdominoes <winsdominoes@winscloud.net>
Date: Wed, 12 Jun 2024 13:38:38 +0700
Subject: [PATCH] in out

---
 x86-64/in-out/in-out     | Bin 0 -> 233 bytes
 x86-64/in-out/in-out.asm |  16 +++++++++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100755 x86-64/in-out/in-out

diff --git a/x86-64/in-out/in-out b/x86-64/in-out/in-out
new file mode 100755
index 0000000000000000000000000000000000000000..ae1067553bc7dae4044190e3d88afce9a655fc5b
GIT binary patch
literal 233
zcmX|3I}U&#3@s$M>Q&erjOn83;NXqCl1Cs8_AH!2X`ztN_ieB3*u8UL&%+9$Za}r_
zRN4o^48G;k4LuQpO;yZI8NyTz*&E6?KToKEp^7q2BW;gjqWBTNQY3yP9|LicgT!3H
JY-y%ND?iG68y5fo

literal 0
HcmV?d00001

diff --git a/x86-64/in-out/in-out.asm b/x86-64/in-out/in-out.asm
index d50875e..2ecf350 100644
--- a/x86-64/in-out/in-out.asm
+++ b/x86-64/in-out/in-out.asm
@@ -4,8 +4,22 @@ segment readable executable
 
 entry $
 	; 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
 buf 	rb 80