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/*
* This file is a part of configure.c
*
* hex2hex reads an input file in Intel HEX format and produces
* an (unsigned char) array which contains the bytes and writes it to the
* output file using C syntax
*/
#define MAX_SIZE (256*1024)
#define ABANDON(why) { \
fprintf(stderr, "%s: " why "\n", source); \
return 0; \
}
int loadhex(FILE *inf, unsigned char *buf, char *source)
{
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 hex2hex(char *source, char *target, char *varline)
{
FILE *inf, *outf;
int i,l;
unsigned char buf[MAX_SIZE];
if ((inf=fopen(source, "r"))==NULL)
{
perror(source);
return 0;
}
if ((outf=fopen(target, "w"))==NULL)
{
perror(target);
fclose(inf);
return 0;
}
l=loadhex(inf, buf, source);
if (l<=0)
{
fclose(inf);
fclose(outf);
return l;
}
fprintf(outf, "/*\n *\t Computer generated file. Do not edit.\n */\n");
fprintf(outf, "static int %s_len = %d;\n", varline, l);
fprintf(outf, "static unsigned char %s[] = {\n", varline);
for (i=0;i<l;i++)
{
if (i) fprintf(outf, ",");
if (i && !(i % 16)) fprintf(outf, "\n");
fprintf(outf, "0x%02x", buf[i]);
}
fprintf(outf, "\n};\n\n");
fclose(inf);
fclose(outf);
return 1;
}
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