From 4d0e2f1af168fc2f995ebcb259a2a9525c01c770 Mon Sep 17 00:00:00 2001
From: Yourtion <yourtion@gmail.com>
Date: Tue, 3 May 2016 11:59:06 +0800
Subject: [PATCH] =?UTF-8?q?=E5=BD=93=E5=BF=83=E5=AF=84=E5=AD=98=E5=99=A8?=
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---
 20_day/hello.nas    | 24 +++++++++++++-----------
 20_day/naskfunc.nas |  2 ++
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/20_day/hello.nas b/20_day/hello.nas
index 99d8d83..8f75991 100644
--- a/20_day/hello.nas
+++ b/20_day/hello.nas
@@ -1,12 +1,14 @@
+[INSTRSET "i486p"]
 [BITS 32]
-		MOV		AL,'h'
-		INT  0x40
-		MOV		AL,'e'
-		INT  0x40
-		MOV		AL,'l'
-		INT  0x40
-		MOV		AL,'l'
-		INT  0x40
-		MOV		AL,'o'
-		INT  0x40
-		RETF
+		MOV		ECX,msg
+putloop:
+		MOV		AL,[CS:ECX]
+		CMP		AL,0
+		JE		fin
+		INT		0x40
+		ADD		ECX,1
+		JMP		putloop
+fin:
+	RETF
+msg:
+		DB		"hello",0
\ No newline at end of file
diff --git a/20_day/naskfunc.nas b/20_day/naskfunc.nas
index 5e4e000..38aa311 100644
--- a/20_day/naskfunc.nas
+++ b/20_day/naskfunc.nas
@@ -219,10 +219,12 @@ _farcall:		; void farcall(int eip, int cs);
 
 _asm_cons_putchar:
 		STI
+		PUSHAD
 		PUSH		1
 		AND			EAX,0xff ; 将AH和EAX的高位置0，将EAX置为已存入字符编码的状态
 		PUSH    EAX
 		PUSH		DWORD [0x0fec] ; 读取内存并PUSH该值
 		CALL		_cons_putchar
 		ADD			ESP,12   ; 将栈中的数据丢弃
+		POPAD
 		IRETD