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/* $OpenBSD: srec.c,v 1.2 2001/04/30 00:06:34 miod Exp $ */
/*
* Public domain, believed to be by Mike Price.
*
* convert binary file to Srecord format
*/
#include <stdio.h>
#include <ctype.h>
int get32();
void put32();
void sput();
void put();
int checksum();
int mask;
int size;
main(argc, argv)
int argc;
char *argv[];
{
char buf[32];
int cc;
int base;
int addr;
char *name;
if (argc != 4) {
fprintf(stderr, "usage: %s {size} {hex_addr} {name}\n", argv[0]);
fprintf(stderr, "Size = 2, 3, or 4 byte address\n");
exit(1);
}
sscanf(argv[1], "%x", &size);
mask = (1 << (size * 8)) - 1;
if (!mask)
mask = (-1);
sscanf(argv[2], "%x", &base);
name = argv[3];
if (size == 2)
printf("S0%02X%04X", 2 + strlen(name) + 1, 0);
if (size == 3)
printf("S0%02X%06X", 3 + strlen(name) + 1, 0);
if (size == 4)
printf("S0%02X%08X", 4 + strlen(name) + 1, 0);
sput(name);
printf("%02X\n", checksum(0, name, strlen(name), size));
addr = base;
for (;;) {
cc = get32(buf);
if (cc > 0) {
put32(cc, addr, buf, size, mask);
addr += cc;
} else
break;
}
buf[0] = base >> 8;
buf[1] = base;
printf("S%d%02X", 11 - size, 2 + 1);
switch (size) {
case 2:
printf("%04X", base & mask);
break;
case 3:
printf("%06X", base & mask);
break;
case 4:
printf("%08X", base & mask);
break;
}
/*
* kludge -> some sizes need an extra count (1 if size == 3, 2 if
* size == 4). Don't ask why.
*/
printf("%02X\n", checksum(base, (char *) 0, 0, size) +
(size - 2));
exit (0);
}
int
get32(buf)
char buf[];
{
char *cp = buf;
int i;
int c;
for (i = 0; i < 32; ++i) {
if ((c = getchar()) != EOF)
*cp++ = c;
else
break;
}
return (cp - buf);
}
void
put32(len, addr, buf, size, mask)
int len;
int addr;
char buf[];
int size, mask;
{
char *cp = buf;
int i;
if (size == 2)
printf("S1%02X%04X", 2 + len + 1, addr & mask);
if (size == 3)
printf("S2%02X%06X", 3 + len + 1, addr & mask);
if (size == 4)
printf("S3%02X%08X", 4 + len + 1, addr & mask);
for (i = 0; i < len; ++i)
put(*cp++);
printf("%02X\n", checksum(addr, buf, len, size));
}
void
sput(s)
char *s;
{
while (*s != '\0')
put(*s++);
}
void
put(c)
int c;
{
printf("%02X", c & 0xff);
}
int
checksum(addr, buf, len, size)
int addr;
char buf[];
int len;
int size;
{
char *cp = buf;
int sum = 0xff - 1 - size - (len & 0xff);
int i;
if (size == 4)
sum -= (addr >> 24) & 0xff;
if (size >= 3)
sum -= (addr >> 16) & 0xff;
sum -= (addr >> 8) & 0xff;
sum -= addr & 0xff;
for (i = 0; i < len; ++i) {
sum -= *cp++ & 0xff;
}
return (sum & 0xff);
}
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