1/*
  2 * hex2hex reads stdin in Intel HEX format and produces an
  3 * (unsigned char) array which contains the bytes and writes it
  4 * to stdout using C syntax
  5 */
  6
  7#include <stdio.h>
  8#include <string.h>
  9#include <stdlib.h>
 10
 11#define ABANDON(why) { fprintf(stderr, "%s\n", why); exit(1); }
 12#define MAX_SIZE (256*1024)
 13unsigned char buf[MAX_SIZE];
 14
 15static int loadhex(FILE *inf, unsigned char *buf)
 16{
 17	int l=0, c, i;
 18
 19	while ((c=getc(inf))!=EOF)
 20	{
 21		if (c == ':')	/* Sync with beginning of line */
 22		{
 23			int n, check;
 24			unsigned char sum;
 25			int addr;
 26			int linetype;
 27
 28			if (fscanf(inf, "%02x", &n) != 1)
 29			   ABANDON("File format error");
 30			sum = n;
 31
 32			if (fscanf(inf, "%04x", &addr) != 1)
 33			   ABANDON("File format error");
 34			sum += addr/256;
 35			sum += addr%256;
 36
 37			if (fscanf(inf, "%02x", &linetype) != 1)
 38			   ABANDON("File format error");
 39			sum += linetype;
 40
 41			if (linetype != 0)
 42			   continue;
 43
 44			for (i=0;i<n;i++)
 45			{
 46				if (fscanf(inf, "%02x", &c) != 1)
 47			   	   ABANDON("File format error");
 48				if (addr >= MAX_SIZE)
 49				   ABANDON("File too large");
 50				buf[addr++] = c;
 51				if (addr > l)
 52				   l = addr;
 53				sum += c;
 54			}
 55
 56			if (fscanf(inf, "%02x", &check) != 1)
 57			   ABANDON("File format error");
 58
 59			sum = ~sum + 1;
 60			if (check != sum)
 61			   ABANDON("Line checksum error");
 62		}
 63	}
 64
 65	return l;
 66}
 67
 68int main( int argc, const char * argv [] )
 69{
 70	const char * varline;
 71	int i,l;
 72	int id=0;
 73
 74	if(argv[1] && strcmp(argv[1], "-i")==0)
 75	{
 76		argv++;
 77		argc--;
 78		id=1;
 79	}
 80	if(argv[1]==NULL)
 81	{
 82		fprintf(stderr,"hex2hex: [-i] filename\n");
 83		exit(1);
 84	}
 85	varline = argv[1];
 86	l = loadhex(stdin, buf);
 87
 88	printf("/*\n *\t Computer generated file. Do not edit.\n */\n");
 89        printf("static int %s_len = %d;\n", varline, l);
 90	printf("static unsigned char %s[] %s = {\n", varline, id?"__initdata":"");
 91
 92	for (i=0;i<l;i++)
 93	{
 94		if (i) printf(",");
 95		if (i && !(i % 16)) printf("\n");
 96		printf("0x%02x", buf[i]);
 97	}
 98
 99	printf("\n};\n\n");
100	return 0;
101}