File: [local] / prex-old / usr / test / kmon / kmon.c (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:52 2008 UTC (16 years, 3 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_8_BASE, PREX_0_7_BASE, HEAD Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
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/*
* Copyright (c) 2005, Kohsuke Ohtani
* 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
*/
/*
* kmon.c - main routine for kernel monitor
*/
#include <prex/prex.h>
#include <prex/keycode.h>
#include <ctype.h>
#include <stdio.h>
#include <limits.h>
extern int dispatch_cmd(int argc, char **arg_list);
static char *arg_list[LINE_MAX];
/*
* Read a line.
*/
void
read_line(char *line)
{
int c, len = 0;
char *p = line;
for (;;) {
c = getchar();
if (c == '\n' || len > LINE_MAX) {
*p = '\0';
return;
}
*p = (char)c;
p++;
len++;
}
}
/*
* Parse an entire given line.
*/
int
parse_line(char *line)
{
char *p = line;
int argc = 0;
for (;;) {
/* Skip space */
while (*p && *p == ' ')
p++;
if (*p == 0)
break;
arg_list[argc++] = p;
/* Skip word */
while (*p && *p != ' ')
p++;
if (*p == 0)
break;
*p++ = 0;
}
arg_list[argc] = NULL;
return argc;
}
int
main(int argc, char *argv[])
{
char line[LINE_MAX];
int c;
printf("Prex kernel monitor - type 'help' to list commands\n");
for (;;) {
printf("[kmon]$ ");
read_line(line);
c = parse_line(line);
if (c) {
if (dispatch_cmd(c, arg_list))
break;
}
}
return 0;
}