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#ident "$Id$"
/* ----------------------------------------------------------------------- *
*
* Copyright 2002 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Bostom MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* hello.c
*
* Simple COM32 image
*/
#include <com32.h>
#define NULL ((void *)0)
static inline void memset(void *buf, int ch, unsigned int len)
{
asm volatile("cld; rep; stosb"
: "+D" (buf), "+c" (len) : "a" (ch) : "memory");
}
int _start(unsigned int nargs, char *cmdline,
void (*syscall)(unsigned char, com32sys_t *, com32sys_t *),
void *bounce_ptr, unsigned int bounce_len)
{
const char *msg = "Hello, World!\r\n";
com32sys_t inreg, outreg;
const char *p;
memset(&inreg, 0, sizeof inreg);
for ( p = msg ; *p ; p++ ) {
inreg.edx.b[0] = *p;
inreg.eax.b[1] = 0x02; /* Write Character */
syscall(0x21, &inreg, NULL);
}
return 0;
}
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