From f706e3692dda6ce2b605b67b41807887404953cb Mon Sep 17 00:00:00 2001
From: "yu.dongliang" <18588496441@163.com>
Date: Sat, 13 Dec 2025 21:52:25 +0800
Subject: [PATCH] asm.s

---
 asm.s | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/asm.s b/asm.s
index e92ef74..ecebc71 100644
--- a/asm.s
+++ b/asm.s
@@ -7,7 +7,7 @@ asm_main:
 #rsi = argv
 #rdx = envp
 	cmp $2, %rdi
-	jl  5f
+	jl  _print_usage
 
 	mov 8(%rsi), %rdi
 0:
@@ -55,3 +55,12 @@ asm_main:
 	jmp 0b
 6:
 	ret
+_print_usage:
+	push %rdi
+	leaq usage, %rdi
+	mov  $0, %eax
+	call printf
+	pop  %rdi
+	ret
+.data
+usage: .asciz "./a.out asm_code\n"
-- 
2.25.1