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Add segment support

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This commit is contained in:
Raphael Assenat 2015-10-12 14:40:32 -04:00
parent 9baffae091
commit b5a1895550
1 changed files with 21 additions and 8 deletions
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29
tool/ihex.c
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@ -24,6 +24,7 @@ int load_ihex(const char *file, unsigned char *dstbuf, int bufsize)
int line = 0;
int eof_seen = 0;
unsigned int max_address = 0;
unsigned int offset = 0;
fptr = fopen(file, "r");
if (!fptr) {
@ -93,27 +94,39 @@ int load_ihex(const char *file, unsigned char *dstbuf, int bufsize)
switch(databuf[3])
{
case 0x00: // Data
if (address + data_count > bufsize) {
if (address + offset + data_count > bufsize) {
fprintf(stderr, "hex file too large\n");
ret = -6;
goto err;
}
if (address + data_count > max_address) {
max_address = address + data_count;
if (address + offset + data_count > max_address) {
max_address = address + offset + data_count;
}
memcpy(dstbuf + address, databuf + 4, data_count);
memcpy(dstbuf + address + offset, databuf + 4, data_count);
break;
case 0x01: // EOF
eof_seen = 1;
break;
case 0x04: // Extended linear address
if (data_count != 2) {
fprintf(stderr, "ihex parser: Malformatted 0x04 record at line %d\n", line);
ret = -8;
goto err;
}
offset = (databuf[4] << 24) | (databuf[5] << 16);
//printf("OFfset: 0x%08x\n", offset);
break;
case 0x03: // Start segment address
case 0x05: // Start linear address
// Ignored
break;
default:
case 0x02: // Extended segment address
case 0x03: // Start segment address
case 0x04: // Extended linear address
case 0x05: // Start linear address
fprintf(stderr, "ihex parser: Unimplemented record type 0x%02x\n", databuf[3]);
fprintf(stderr, "ihex parser: Unimplemented record type 0x%02x at line %d\n", databuf[3], line);
ret = -2;
goto err;
}