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// SPDX-License-Identifier: GPL-2.0
/*
* hex2hex reads stdin in Intel HEX format and produces an
* (unsigned char) array which contains the bytes and writes it
* to stdout using C syntax
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define ABANDON(why) { fprintf(stderr, "%s\n", why); exit(1); }
#define MAX_SIZE (256*1024)
unsigned char buf[MAX_SIZE];
static int loadhex(FILE *inf, unsigned char *buf)
{
int l=0, c, i;
while ((c=getc(inf))!=EOF)
{
if (c == ':') /* Sync with beginning of line */
{
int n, check;
unsigned char sum;
int addr;
int linetype;
if (fscanf(inf, "%02x", &n) != 1)
ABANDON("File format error");
sum = n;
if (fscanf(inf, "%04x", &addr) != 1)
ABANDON("File format error");
sum += addr/256;
sum += addr%256;
if (fscanf(inf, "%02x", &linetype) != 1)
ABANDON("File format error");
sum += linetype;
if (linetype != 0)
continue;
for (i=0;i<n;i++)
{
if (fscanf(inf, "%02x", &c) != 1)
ABANDON("File format error");
if (addr >= MAX_SIZE)
ABANDON("File too large");
buf[addr++] = c;
if (addr > l)
l = addr;
sum += c;
}
if (fscanf(inf, "%02x", &check) != 1)
ABANDON("File format error");
sum = ~sum + 1;
if (check != sum)
ABANDON("Line checksum error");
}
}
return l;
}
int main( int argc, const char * argv [] )
{
const char * varline;
int i,l;
int id=0;
if(argv[1] && strcmp(argv[1], "-i")==0)
{
argv++;
argc--;
id=1;
}
if(argv[1]==NULL)
{
fprintf(stderr,"hex2hex: [-i] filename\n");
exit(1);
}
varline = argv[1];
l = loadhex(stdin, buf);
printf("/*\n *\t Computer generated file. Do not edit.\n */\n");
printf("static int %s_len = %d;\n", varline, l);
printf("static unsigned char %s[] %s = {\n", varline, id?"__initdata":"");
for (i=0;i<l;i++)
{
if (i) printf(",");
if (i && !(i % 16)) printf("\n");
printf("0x%02x", buf[i]);
}
printf("\n};\n\n");
return 0;
}
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