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stand_user.c revision 1.5 
      1 /*	$NetBSD: stand_user.c,v 1.5 2007/03/04 06:00:02 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #include <lib/libsa/stand.h>
     30 
     31 #include "sanamespace.h"
     32 
     33 #include <stdio.h>
     34 #include <unistd.h>
     35 #include <stdlib.h>
     36 #include <stdarg.h>
     37 #include <sys/time.h>
     38 #include <fcntl.h>
     39 #include <sys/mman.h>
     40 #include <machine/sysarch.h>
     41 #include <err.h>
     42 
     43 /*
     44  * Harness for test of standalone code in user space.
     45  * XXX Requires silly namespace games.
     46  */
     47 
     48 #ifndef HEAPSIZE
     49 #define HEAPSIZE (128*1024)
     50 #endif
     51 
     52 int samain __P((void));
     53 
     54 int
     55 main()
     56 {
     57 	char *h = malloc(HEAPSIZE);
     58 	setheap(h, h + HEAPSIZE);
     59 
     60 	return (samain());
     61 }
     62 
     63 void
     64 _rtt()
     65 {
     66 	warnx("_rtt called");
     67 	_exit(1);
     68 }
     69 
     70 int
     71 getsecs()
     72 {
     73 	struct timeval t;
     74 	gettimeofday(&t, 0);
     75 	return (t.tv_sec);
     76 }
     77 
     78 void
     79 delay(t)
     80 	int t;
     81 {
     82 	struct timeval to;
     83 	to.tv_sec = 0;
     84 	to.tv_usec = t;
     85 	select(0, 0, 0, 0, &to);
     86 }
     87 
     88 /* make output appear unbuffered */
     89 void
     90 saputchar(c)
     91 	int c;
     92 {
     93 	putchar(c);
     94 	fflush(stdout);
     95 }
     96 
     97 /*
     98  * some functions to get access to the hardware
     99  */
    100 
    101 static int memfd, memcnt;
    102 
    103 void *
    104 mapmem(offset, len)
    105 	int offset, len;
    106 {
    107 	void *base;
    108 
    109 	if (memcnt == 0)
    110 		memfd = open("/dev/mem", O_RDWR, 0);
    111 	if (memfd < 0) {
    112 		warn("open /dev/mem");
    113 		return (0);
    114 	}
    115 	base = mmap(0, len, PROT_READ | PROT_WRITE, MAP_SHARED,
    116 		    memfd, offset);
    117 	if (base == (void *)-1) {
    118 		warn("mmap %x-%x", offset, offset + len - 1);
    119 		return (0);
    120 	}
    121 	memcnt++;
    122 	return (base);
    123 }
    124 
    125 void
    126 unmapmem(addr, len)
    127 	void *addr;
    128 	int len;
    129 {
    130 	munmap(addr, len);
    131 	memcnt--;
    132 	if (memcnt == 0)
    133 		close(memfd);
    134 }
    135 
    136 int
    137 mapio()
    138 {
    139 	int res;
    140 
    141 	res = i386_iopl(1);
    142 	if (res)
    143 		warn("i386_iopl");
    144 	return (res);
    145 }
    146 
    147 int ourseg = 12345;
    148