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/* $OpenBSD: crt0.c,v 1.2 1997/03/31 23:06:22 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <termios.h>
#include "libsa.h"
#include "unixdev.h"
extern void start __P((void)) asm("start");
extern int main __P((int, char **, char **));
static void domap __P((void));
static void seterm __P((void));
void
start()
{
domap();
seterm();
uexit(main(0, NULL, NULL));
}
#define ummap(a,l,p,f,fd,o) (caddr_t)syscall((quad_t)SYS_mmap,a,l,p,f,fd,0,o)
static void
domap()
{
extern char end[];
register caddr_t p = (caddr_t)(((u_long)end + PGOFSET) & ~PGOFSET);
/* map heap */
if ( (p = ummap(p, 32*NBPG, PROT_READ|PROT_WRITE,
MAP_FIXED|MAP_ANON, -1, 0)) == (caddr_t)-1) {
printf("mmap failed: %d\n", errno);
uexit(1);
}
#ifdef DEBUG
else
printf("mmap==%p\n", p);
#endif
/* map kernel */
if ( (p = ummap(0x100000, 0xf00000, PROT_READ|PROT_WRITE,
MAP_FIXED|MAP_ANON, -1, 0)) == (caddr_t)-1) {
printf("mmap failed: %d\n", errno);
uexit(1);
}
#ifdef DEBUG
else
printf("mmap==%p\n", p);
#endif
}
void
seterm()
{
struct termios tc;
if (uioctl(0, TIOCGETA, (char *)&tc) < 0) {
printf("cannot get tty\n");
uexit(1);
}
tc.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
tc.c_oflag &= ~OPOST;
tc.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
tc.c_cflag &= ~(CSIZE|PARENB);
tc.c_cflag |= CS8;
if (uioctl(0, TIOCSETA, (char *)&tc) < 0) {
printf("cannot set tty\n");
uexit(1);
}
}
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