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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
FILE *infile;
long translatelong(long in) { /* translate from little endian to
local representation */
long r;
unsigned char *i;
i = (unsigned char *)∈
r = i[3];
r = (r << 8) + i[2];
r = (r << 8) + i[1];
r = (r << 8) + *i;
return r;
}
int translateshort(short in) {
int r;
unsigned char *i;
i = (unsigned char *)∈
r = (i[1] << 8) + *i;
return r;
}
void print_header(long length) {
char buf[129],t,s,l;
long o,ll;
short rs;
while (length > 0) {
fread(&t,1,1,infile);
switch(t) {
case 1: /* relocation record */
fread(&s,1,1,infile);
fread(&o,4,1,infile);
fread(&l,1,1,infile);
fread(&rs,2,1,infile);
printf(" relocation: location (%04x:%08lx), length %d, "
"referred seg %04x\n",(int)s,translatelong(o),(int)l,
translateshort(rs));
length -= 9;
break;
case 2: /* import record */
fread(&rs,2,1,infile);
ll = 0;
do {
fread(&buf[ll],1,1,infile);
} while (buf[ll++]);
printf(" import: segment %04x = %s\n",translateshort(rs),buf);
length -= ll + 3;
break;
case 3: /* export record */
fread(&s,1,1,infile);
fread(&o,4,1,infile);
ll = 0;
do {
fread(&buf[ll],1,1,infile);
} while (buf[ll++]);
printf(" export: (%04x:%08lx) = %s\n",(int)s,translatelong(o),buf);
length -= ll + 6;
break;
case 4: /* DLL record */
ll = 0;
do {
fread(&buf[ll],1,1,infile);
} while (buf[ll++]);
printf(" dll: %s\n",buf);
length -= ll + 1;
break;
case 5: /* BSS reservation */
fread(&ll,4,1,infile);
printf(" bss reservation: %08lx bytes\n",translatelong(ll));
length -= 5;
break;
default:
printf(" unrecognised record (type %d)\n",(int)t);
length --;
}
}
}
int main(int argc,char **argv) {
char id[7];
long l;
int verbose = 0;
long offset;
puts("RDOFF Dump utility v1.1 (C) Copyright 1996 Julian R Hall");
if (argc < 2) {
fputs("Usage: rdfdump [-v] <filename>\n",stderr);
exit(1);
}
if (! strcmp (argv[1], "-v") )
{
verbose = 1;
if (argc < 3)
{
fputs("required parameter missing\n",stderr);
exit(1);
}
argv++;
}
infile = fopen(argv[1],"rb");
if (! infile) {
fprintf(stderr,"rdfdump: Could not open %s",argv[1]);
exit(1);
}
fread(id,6,1,infile);
if (strncmp(id,"RDOFF",5)) {
fputs("rdfdump: File does not contain valid RDOFF header\n",stderr);
exit(1);
}
printf("File %s: RDOFF version %c\n\n",argv[1],id[5]);
if (id[5] < '1' || id[5] > '1') {
fprintf(stderr,"rdfdump: unknown RDOFF version '%c'\n",id[5]);
exit(1);
}
fread(&l,4,1,infile);
l = translatelong(l);
printf("Header (%ld bytes):\n",l);
print_header(l);
fread(&l,4,1,infile);
l = translatelong(l);
printf("\nText segment length = %ld bytes\n",l);
offset = 0;
while(l--) {
fread(id,1,1,infile);
if (verbose) {
if (offset % 16 == 0)
printf("\n%08lx ", offset);
printf(" %02x",(int) (unsigned char)id[0]);
offset++;
}
}
if (verbose) printf("\n\n");
fread(&l,4,1,infile);
l = translatelong(l);
printf("Data segment length = %ld bytes\n",l);
if (verbose)
{
offset = 0;
while (l--) {
fread(id,1,1,infile);
if (offset % 16 == 0)
printf("\n%08lx ", offset);
printf(" %02x",(int) (unsigned char) id[0]);
offset++;
}
printf("\n");
}
fclose(infile);
return 0;
}
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