1 #ident "$Id: hello.c,v 1.6 2005/01/03 08:23:16 hpa Exp $"
2 /* ----------------------------------------------------------------------- *
4 * Copyright 2002 H. Peter Anvin - All Rights Reserved
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
9 * Boston MA 02111-1307, USA; either version 2 of the License, or
10 * (at your option) any later version; incorporated herein by reference.
12 * ----------------------------------------------------------------------- */
22 #define NULL ((void *)0)
24 static inline void memset(void *buf, int ch, unsigned int len)
26 asm volatile("cld; rep; stosb"
27 : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
32 const char *msg = "Hello, World!\r\n";
36 memset(&inreg, 0, sizeof inreg);
38 for ( p = msg ; *p ; p++ ) {
40 inreg.eax.b[1] = 0x02; /* Write Character */
41 __com32.cs_intcall(0x21, &inreg, NULL);