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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include "get_address.h"
#include "xex.h"
#ifndef VERSION
#define VERSION "???"
#endif
#define SELF "blob2xex"
#define DEFAULT_SIZE 0xffff
static FILE *outfh = 0;
/* get_offset() is patterned on get_address(), but isn't limited
to 64K. TODO: it won't handle offsets >2GB. */
int get_offset(const char *arg) {
unsigned int got;
if(sscanf(arg, "0x%x", &got) != 1)
if(sscanf(arg, "$%x", &got) != 1)
if(sscanf(arg, "%d", &got) != 1) {
fprintf(stderr, "Invalid offset '%s'\n", arg);
return -1;
}
return (int)got;
}
void write_segment(
const char *infile,
const char *outfile,
int loadaddr,
int initaddr,
int offset,
int size)
{
FILE *infh;
unsigned char buffer[65536], *p = buffer;
xex_segment seg;
int c;
if(size < 1) {
fprintf(stderr, SELF ": invalid size %d (must be >= 1).\n", size);
exit(1);
}
if(strcmp(infile, "-") == 0) {
infh = stdout;
} else {
infh = fopen(infile, "rb");
if(!infh) {
perror(outfile);
exit(1);
}
}
if(outfh) {
seg.has_ff_header = 0;
} else {
seg.has_ff_header = 1;
if(strcmp(outfile, "-") == 0) {
outfh = stdout;
} else {
outfh = fopen(outfile, "wb");
if(!outfh) {
perror(outfile);
exit(-1);
}
}
}
seg.object = buffer;
seg.len = 0;
seg.start_addr = loadaddr;
/* skip <offset> bytes in input. don't seek, input might be stdin */
while(offset) {
/* TODO: not very efficient to read 1 byte at a time? */
c = getc(infh);
if(c < 0) {
fprintf(stderr, SELF ": offset extends past EOF on file %s\n", infile);
exit(1); /* TODO: handle this better? */
}
offset--;
}
/* read <size> bytes, or until EOF (which is not an error) */
while(size) {
c = getc(infh);
if(c < 0) break;
*p++ = c;
seg.len++;
size--;
}
seg.end_addr = seg.start_addr + seg.len - 1;
xex_fwrite_seg(&seg, outfh);
if(initaddr >= 0) {
xex_init_seg(&seg, buffer, initaddr);
xex_fwrite_seg(&seg, outfh);
}
fclose(infh);
}
void usage() {
printf(SELF ": Usage:\n\t"
SELF " outfile [-r runaddr] [-l loadaddr [-i initaddr] "
"[-o offset] [-s size] infile] ..."
"\nSee man page for details.\n");
}
int main(int argc, char **argv) {
char *outfile = 0, *infile = 0;
int i, loadaddr = -1, runaddr = -1, initaddr = -1, offset = 0, size = DEFAULT_SIZE, *param = 0;
outfile = argv[1];
if(!outfile || strcmp(outfile, "--help") == 0 || strcmp(outfile, "-h") == 0) {
usage();
exit(0);
}
if(strcmp(outfile, "--version") == 0 || strcmp(outfile, "-V") == 0) {
printf(SELF " " VERSION "\n");
exit(0);
}
if(outfile[0] == '-' && outfile[1] != '\0') {
fprintf(stderr, SELF ": output file must come before any options.\n");
exit(1);
}
if(argc < 5) {
fprintf(stderr, SELF ": not enough arguments.\n");
usage();
exit(1);
}
for(i = 2; i < argc; i++) {
char *arg = argv[i];
if(!arg[0]) continue; /* skip empty args */
if(param) { /* previous option needs an argument */
if(param == &offset) {
if( (offset = get_offset(arg) ) < 0 )
exit(1);
} else {
if( (*param = get_address(SELF, arg) ) < 0 )
exit(1);
}
param = 0;
} else if(arg[0] == '-') {
infile = 0;
switch(arg[1]) {
case 'l': param = &loadaddr; break;
case 'r': param = &runaddr; break;
case 'i': param = &initaddr; break;
case 'o': param = &offset; break;
case 's': param = &size; break;
case 'v': xex_verbose = 1; break;
default:
fprintf(stderr, SELF ": unknown option '-%c'\n", arg[1]);
usage();
exit(1);
break;
}
} else {
if(infile) {
fprintf(stderr, SELF ": input filename without -l option: %s\n", arg);
usage();
exit(1);
}
infile = arg;
write_segment(infile, outfile, loadaddr, initaddr, offset, size);
loadaddr = -1; initaddr = -1; offset = 0; size = DEFAULT_SIZE;
}
}
if(param || (loadaddr >= 0) || (initaddr >= 0) ||
(offset != 0) || (size != DEFAULT_SIZE)) {
fprintf(stderr, SELF ": "
"warning: extra arguments after last input file ignored.\n");
}
if(outfh) {
if(runaddr >= 0) {
xex_segment seg;
unsigned char buf[10];
xex_run_seg(&seg, buf, runaddr);
xex_fwrite_seg(&seg, outfh);
}
fclose(outfh);
}
return 0;
}
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