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/* Copyright (c) 1996-98, Timothy Mann */
/* This software may be copied, modified, and used for any purpose
* without fee, provided that (1) the above copyright notice is
* retained, and (2) modified versions are clearly marked as having
* been modified, with the modifier's name and the date included. */
/* Last modified on Thu Apr 23 23:58:52 PDT 1998 by mann */
/* Simulated TRS-80 DOS /cmd file loader.
*
* See the LDOS Quarterly, April 1, 1982 (Vol 1, No 4), for documentation
* of the TRS-80 DOS /cmd file format.
*
* Usage: cmddump [-flags] infile [outfile startbyte nbytes]
* If the optional arguments are given, the given byte range is dumped
* from the simulated memory after loading.
*
* Flags: -q quiet: turn off -t, -m, -d, -s (later flags can override).
* -t print text of module headers, pds headers,
* patch names, and copyright notices.
* -m print running load map as file is parsed,
* coalescing adjacent blocks (implies -t). (default)
* -d print detailed map; same as -m, but don't coalesce.
* -s print summary load map after file is parsed.
* -i n select ISAM entry n (0x notation OK)
* -p foo select PDS entry "foo" (padded to 8 bytes with spaces)
* -x ignore anything after the first xfer address
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include "load_cmd.h"
unsigned char memory[64*1024] = { 0 };
unsigned char loadmap[64*1024];
#define ARGS "qtmdsi:p:x"
int
main(int argc, char* argv[])
{
FILE* f;
int verbosity = VERBOSITY_MAP;
int isam = -1;
char *pds = NULL;
int xferaddr, stopxfer = 0;
int print_summary = 0;
char pdsbuf[9];
int res;
int c, errflg = 0;
optarg = NULL;
while (!errflg && (c = getopt(argc, argv, ARGS)) != -1) {
switch (c) {
case 'q':
verbosity = VERBOSITY_QUIET;
break;
case 't':
verbosity = VERBOSITY_TEXT;
break;
case 'm':
verbosity = VERBOSITY_MAP;
break;
case 'd':
verbosity = VERBOSITY_DETAILED;
break;
case 's':
print_summary = 1;
break;
case 'i':
isam = strtol(optarg, NULL, 0);
break;
case 'p':
strncpy(pdsbuf, optarg, 8);
pdsbuf[8] = '\000';
strncat(pdsbuf, " ", 8 - strlen(pdsbuf));
pds = pdsbuf;
break;
case 'x':
stopxfer = 1;
break;
default:
errflg++;
break;
}
}
if (errflg || !(argc == optind + 1 || argc == optind + 4)) {
fprintf(stderr,
"Usage: %s [-%s] infile [outfile startbyte nbytes]\n",
argv[0], ARGS);
exit(1);
}
f = fopen(argv[optind], "r");
if (f == NULL) {
perror(argv[optind]);
exit(1);
}
res = load_cmd(f, memory, print_summary ? loadmap : NULL,
verbosity, stdout, isam, pds, &xferaddr, stopxfer);
switch (res) {
case LOAD_CMD_OK:
if (isam != -1) {
fprintf(stderr, "warning: not ISAM file but -i flag given\n");
} else if (pds) {
fprintf(stderr, "warning: not PDS file but -p flag given\n");
}
break;
case LOAD_CMD_EOF:
fprintf(stderr, "premature end of file\n");
exit(1);
case LOAD_CMD_NOT_FOUND:
if (pds) {
fprintf(stderr, "PDS entry \"%s\" not found\n", pds);
} else {
fprintf(stderr, "ISAM entry 0x%02x not found\n", isam);
}
exit(1);
case LOAD_CMD_ISAM:
if (isam == -1) {
fprintf(stderr, "warning: ISAM file but -i flag not given\n");
}
break;
case LOAD_CMD_PDS:
if (pds == NULL) {
fprintf(stderr, "warning: PDS file but -p flag not given\n");
}
break;
default:
fprintf(stderr, "load file format error, bad block type 0x%02x\n", res);
break;
}
if (print_summary) {
/* Print load map */
int lastaddr = -1;
int lastcount = -1;
int addr;
for (addr = 0; addr < sizeof(memory); addr++) {
if (loadmap[addr] != lastcount) {
if (lastcount == 1) {
printf("loaded 0x%04x - 0x%04x\n",
lastaddr, addr-1);
} else if (lastcount > 1) {
printf("loaded 0x%04x - 0x%04x (%d times!)\n",
lastaddr, addr-1, lastcount);
}
lastaddr = addr;
lastcount = loadmap[addr];
}
}
printf("transfer address = 0x%04x\n", xferaddr);
}
/* Dump memory - optional */
if (argc == optind + 4) {
FILE* outf;
int addr, count;
outf = fopen(argv[optind + 1], "w");
if (outf == NULL) {
perror(argv[optind + 1]);
exit(1);
}
addr = strtol(argv[optind + 2], (char**)NULL, 0);
count = strtol(argv[optind + 3], (char**)NULL, 0);
while (count-- > 0) {
putc(memory[addr++], outf);
}
fclose(outf);
}
return 0;
}
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