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/*
* plex86: run multiple x86 operating systems concurrently
* Copyright (C) 1999-2000 The plex86 developers team
*
* replay.c: replay IO events from a previous execution. This
* is useful for intializing devices without needing the BIOS.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include "plex86.h"
#include "user.h"
#include "plugin.h"
plugin_t *bios_plugin;
int
plugin_init(plugin_t *plugin, int argc, char *argv[])
{
char *filename_p;
FILE *fp;
unsigned line;
#define FILE_PARAM "file="
bios_plugin = plugin;
if (argc != 1)
goto usage;
/* Get the file= parameter */
if ( !argv[0] || strncmp(argv[0], FILE_PARAM, strlen(FILE_PARAM)) )
goto usage;
filename_p = &argv[0][strlen(FILE_PARAM)];
fp = fopen(filename_p, "r");
if (!fp) {
fprintf(stderr, "could not open IO log file '%s'.\n", filename_p);
return 1;
}
fprintf(stderr, "replaying IO events from log file '%s'.\n", filename_p);
line = 1;
while (!feof(fp)) {
unsigned len, rw, port, data;
int ret;
ret = fscanf(fp, "%u %u %x %x\n", &len, &rw, &port, &data);
if (ret != 4) {
fprintf(stderr, "Error reading IO log file '%s'.\n", filename_p);
fclose(fp);
return 1;
}
if (rw==0) {
unsigned temp;
temp = 0;
plugin_emulate_inport(port, len, 1, &temp);
if (temp!=data) {
fprintf(stderr, "IO replay read value (0x%x) not expected, line %u.\n",
temp, line);
fclose(fp);
return 1;
}
}
else if (rw==1) {
plugin_emulate_outport(port, len, 1, &data);
}
else {
fprintf(stderr, "Error reading IO log file '%s'.\n", filename_p);
fclose(fp);
return 1;
}
line++;
}
fclose(fp);
return 0;
usage:
fprintf(stderr, "usage: replay_io.so file=path\n");
return 1;
}
void
plugin_fini(void)
{
return;
}
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