mirror of https://github.com/fachat/xa65.git
392 lines
10 KiB
C
392 lines
10 KiB
C
/* file65 -- A part of xa65 - 65xx/65816 cross-assembler and utility suite
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* Print information about o65 files
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*
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* Copyright (C) 1989-1997 André Fachat (a.fachat@physik.tu-chemnitz.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _MSC_VER
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <string.h>
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#include "version.h"
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#define BUF (9*4+8)
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#define programname "file65"
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#define progversion "v0.2.1"
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#define author "Written by Andre Fachat"
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#define copyright "Copyright (C) 1997-2002 Andre Fachat."
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/* o65 file format mode bits */
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#define FM_OBJ 0x1000
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#define FM_SIZE 0x2000
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#define FM_RELOC 0x4000
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#define FM_CPU 0x8000
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#define FM_CPU2 0x00f0
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#define FM_CPU2_6502 0x0000
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#define FM_CPU2_65C02 0x0010
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#define FM_CPU2_65SC02 0x0020
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#define FM_CPU2_65CE02 0x0030
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#define FM_CPU2_NMOS 0x0040
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#define FM_CPU2_65816E 0x0050
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const char *cpunames[16] = {
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"6502",
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"65C02",
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"65SC02",
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"65CE02",
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"NMOS6502",
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"65816",
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NULL, NULL,
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"6809", NULL, // 1000 -
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"Z80", NULL, NULL, // 1010 -
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"8086", // 1101 -
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"80286", // 1110 -
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NULL
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};
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int read_options(FILE *fp);
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int print_labels(FILE *fp, int offset);
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unsigned char hdr[BUF];
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unsigned char cmp[] = { 1, 0, 'o', '6', '5' };
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int xapar = 0;
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int rompar = 0;
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int romoff = 0;
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int labels = 0;
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int verbose = 0;
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void usage(FILE *fp)
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{
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fprintf(fp,
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"Usage: %s [options] [file]\n"
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"Print file information about o65 files\n"
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"\n",
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programname);
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fprintf(fp,
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" -P print the segment end addresses according to `xa' command line\n"
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" parameters `-b?'\n"
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" -a offset print `xa' ``romable'' parameter for another file behind this one\n"
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" in the same ROM. Add offset to start address.\n"
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" -A offset same as `-a', but only print the start address of the next\n"
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" file in the ROM\n"
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" -v print undefined and global labels\n"
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" -vv print undefined and global labels, and relocation tables\n"
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" --version output version information and exit\n"
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" --help display this help and exit\n");
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}
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int main(int argc, char *argv[]) {
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int i, j, n, mode, hlen;
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FILE *fp;
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char *aligntxt[4]= {"[align 1]","[align 2]","[align 4]","[align 256]"};
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if(argc<=1) {
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usage(stderr);
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exit(1);
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}
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i = 1;
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if (strstr(argv[i], "--help") || strstr(argv[i], "-?") || strstr(argv[i], "-h")) {
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usage(stdout);
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exit(0);
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}
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if (strstr(argv[i], "--version")) {
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version(programname, progversion, author, copyright);
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exit(0);
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}
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while(i<argc) {
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if(argv[i][0]=='-') {
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/* process options */
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switch(argv[i][1]) {
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case 'v':
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j = 1;
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while (argv[i][j] == 'v') {
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verbose ++;
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j++;
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}
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break;
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case 'a':
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case 'A':
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rompar = 1;
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if(argv[i][1]=='A') rompar++;
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if(argv[i][2]) romoff = atoi(argv[i]+2);
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else if(i + 1 < argc) romoff = atoi(argv[++i]);
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else fprintf(stderr,"%s: missing offset\n",programname);
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break;
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case 'P':
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xapar = 1;
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break;
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default:
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fprintf(stderr,"%s: %s unknown option, use '-h' for help\n",programname,argv[i]);
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break;
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}
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} else {
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fp = fopen(argv[i],"rb");
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if(fp) {
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n = fread(hdr, 1, 8, fp);
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if((n>=8) && (!memcmp(hdr, cmp, 5))) {
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mode=hdr[7]*256+hdr[6];
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if(!xapar && !rompar) {
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printf("%s: o65 version %d %s file\n", argv[i], hdr[5],
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hdr[7]&0x10 ? "object" : "executable");
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printf(" mode: %04x =",mode );
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printf("[%s][%sbit][%s relocation][CPU %s][CPU2 %s]%s\n",
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(mode & 0x1000)?"object":"executable",
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(mode & 0x2000)?"32":"16",
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(mode & 0x4000)?"page":"byte",
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(mode & 0x8000)?"65816":"6502",
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cpunames[(mode & FM_CPU2) >> 4],
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aligntxt[mode & 3]);
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}
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if(mode & 0x2000) {
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fprintf(stderr,"file65: %s: 32 bit size not supported\n", argv[i]);
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} else {
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n=fread(hdr+8, 1, 18, fp);
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if(n<18) {
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fprintf(stderr,"file65: %s: truncated file\n", argv[i]);
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} else {
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if(!xapar && !rompar) {
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printf(" text segment @ $%04x - $%04x [$%04x bytes]\n", hdr[9]*256+hdr[8], hdr[9]*256+hdr[8]+hdr[11]*256+hdr[10], hdr[11]*256+hdr[10]);
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printf(" data segment @ $%04x - $%04x [$%04x bytes]\n", hdr[13]*256+hdr[12], hdr[13]*256+hdr[12]+hdr[15]*256+hdr[14], hdr[15]*256+hdr[14]);
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printf(" bss segment @ $%04x - $%04x [$%04x bytes]\n", hdr[17]*256+hdr[16], hdr[17]*256+hdr[16]+hdr[19]*256+hdr[18], hdr[19]*256+hdr[18]);
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printf(" zero segment @ $%04x - $%04x [$%04x bytes]\n", hdr[21]*256+hdr[20], hdr[21]*256+hdr[20]+hdr[23]*256+hdr[22], hdr[23]*256+hdr[22]);
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printf(" stack size $%04x bytes %s\n", hdr[25]*256+hdr[24],
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(hdr[25]*256+hdr[24])==0?"(i.e. unknown)":"");
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if(verbose) {
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read_options(fp);
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print_labels(fp, hdr[11]*256+hdr[10] + hdr[15]*256+hdr[14]);
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}
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} else {
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struct stat fbuf;
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hlen = 8+18+read_options(fp);
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stat(argv[i],&fbuf);
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if(xapar) {
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if(!rompar) printf("-bt %d ",
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(hdr[9]*256+hdr[8]) + (hdr[11]*256+hdr[10])
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);
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printf("-bd %d -bb %d -bz %d ",
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(hdr[13]*256+hdr[12]) + (hdr[15]*256+hdr[14]),
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(hdr[17]*256+hdr[16]) + (hdr[19]*256+hdr[18]),
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(hdr[21]*256+hdr[20]) + (hdr[23]*256+hdr[22])
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);
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}
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if(rompar==1) {
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printf("-A %lu ", (unsigned long)((hdr[9]*256+hdr[8])
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-hlen +romoff +(fbuf.st_size)));
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} else
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if(rompar==2) {
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printf("%lu ", (unsigned long)((hdr[9]*256+hdr[8])
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-hlen +romoff +(fbuf.st_size)));
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}
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printf("\n");
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}
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}
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}
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} else {
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fprintf(stderr,"file65: %s: not an o65 file!\n", argv[i]);
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if(hdr[0]==1 && hdr[1]==8 && hdr[3]==8) {
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printf("%s: C64 BASIC executable (start address $0801)?\n", argv[i]);
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} else
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if(hdr[0]==1 && hdr[1]==4 && hdr[3]==4) {
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printf("%s: CBM PET BASIC executable (start address $0401)?\n", argv[i]);
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}
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}
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} else {
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fprintf(stderr,"file65: %s: %s\n", argv[i], strerror(errno));
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}
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}
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i++;
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}
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return 0;
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}
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static struct { int opt; int strfl; char *string; } otab[] = {
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{ 0, 1, "Filename" },
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{ 1, 0, "O/S Type" },
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{ 2, 1, "Assembler" },
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{ 3, 1, "Author" },
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{ 4, 1, "Creation Date" },
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{ -1, -1, NULL }
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};
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static char* stab[] = {
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"undefined" ,
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"absolute" ,
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"text" ,
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"data" ,
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"bss" ,
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"zero" ,
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"-" ,
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"-"
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};
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void print_option(unsigned char *buf, int len) {
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int i, strfl=0;
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for(i=0;otab[i].opt>=0; i++) if(*buf==otab[i].opt) break;
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if(otab[i].opt>=0) {
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printf("fopt: %-17s: ", otab[i].string);
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strfl = otab[i].strfl;
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} else {
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printf("fopt: Unknown Type $%02x : ", (*buf & 0xff));
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}
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if(strfl) {
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buf[len]=0;
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printf("%s\n", buf+1);
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} else {
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for (i=1; i<len-1; i++) {
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printf("%02x ", buf[i] & 0xff);
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}
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printf("\n");
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}
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}
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int read_options(FILE *fp) {
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int c, d, l=0;
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unsigned char tb[256];
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c=fgetc(fp); l++;
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while(c && c!=EOF) {
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c&=255;
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d = fread(tb, 1, c-1, fp);
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if(labels) print_option(tb, c);
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l+=c;
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c=fgetc(fp);
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}
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return l;
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}
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int print_labels(FILE *fp, int offset) {
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int i, nud, c, seg, off;
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const char *segments[] = { "undef", "abs", "text", "data", "bss", "zero" };
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const char *reltype[] = { "-", "LOW", "HIGH", "-", "WORD", "SEG", "SEGADDR" };
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/*
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printf("print_labels:offset=%d\n",offset);
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*/
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fseek(fp, offset, SEEK_CUR);
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// -----------------------------------------------------------
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// print undefined labels
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nud = (fgetc(fp) & 0xff);
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nud += ((fgetc(fp) << 8) & 0xff00);
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printf("Undefined Labels: %d\n", nud);
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if(nud) {
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do {
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c=fgetc(fp);
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while(c && c!=EOF) {
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fputc(c, stdout);
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c=fgetc(fp);
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}
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printf("\t");
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} while(--nud);
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printf("\n");
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}
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// ---------------------------------------------------------
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// skip relocation tables
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// two tables, one for text one for data
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for(i=0;i<2;i++) {
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unsigned char lowbyte;
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unsigned short index;
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unsigned short offset = 0;
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if (verbose > 1) {
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printf("Relocation table for %s:\n", i ? "text":"data");
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}
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c=fgetc(fp);
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while(c && c!=EOF) {
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c&= 0xff;
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while(c == 255 && c!= EOF) {
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offset += 254;
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c=fgetc(fp);
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if(c==EOF) break;
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c&= 0xff;
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}
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if(c==EOF) break;
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offset += c;
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c=fgetc(fp);
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if( (c & 0xe0) == 0x40 ) {
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lowbyte = fgetc(fp);
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}
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if( (c & 0x07) == 0 ) {
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index = fgetc(fp) & 0xff;
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index += (fgetc(fp) & 0xff) << 8;
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}
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if (verbose > 1) {
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printf("\t%d:%s(%s (%d)", offset, reltype[ (c>>5) & 0xf], segments[c & 0x07], (c&0x07));
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if ( (c & 0xe0) == 0x40) {
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printf(", %02x", lowbyte);
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}
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if ( (c & 0x07) == 0) {
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printf(", %04x", index);
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}
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printf(")");
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}
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c=fgetc(fp);
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}
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if (verbose > 1) {
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printf("\n");
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}
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}
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// ---------------------------------------------------------
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// print global labels
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nud = (fgetc(fp) & 0xff);
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nud += ((fgetc(fp) << 8) & 0xff00);
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printf("Global Labels: %d\n", nud);
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if(nud) {
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do {
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c=fgetc(fp);
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while(c && c!=EOF) {
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fputc(c, stdout);
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c=fgetc(fp);
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}
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if(c==EOF) break;
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seg = fgetc(fp) & 0xff;
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off= (fgetc(fp) & 0xff);
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off+= ((fgetc(fp) << 8) & 0xff00);
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printf(" (segID=%d (%s), offset=%04x)\n", seg, stab[seg&7], off);
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} while(--nud);
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}
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return 0;
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}
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