void dump_header(dictionary_header_t *header)
{
printk("EvangelionBIOS dictionary:\n");
printk(" version: %d\n", header->version);
printk(" cellsize: %d\n", header->cellsize);
printk(" endianess: %s\n", header->endianess?"big":"little");
printk(" compression: %s\n", header->compression?"yes":"no");
printk(" relocation: %s\n", header->relocation?"yes":"no");
printk(" checksum: %08x\n", target_long(header->checksum));
printk(" length: %08x\n", target_long(header->length));
printk(" last: %0" FMT_CELL_x "\n", target_cell(header->last));
}
ucell load_dictionary(const char *data, ucell len)
{
u32 checksum=0;
const char *checksum_walk;
ucell *walk, *reloc_table;
dictionary_header_t *header=(dictionary_header_t *)data;
/* assertions */
if (len <= (sizeof(dictionary_header_t)) || strncmp(DICTID, data, 8))
return 0;
#ifdef CONFIG_DEBUG_DICTIONARY
dump_header(header);
#endif
checksum_walk=data;
while (checksum_walk<data+len) {
checksum+=read_long(checksum_walk);
checksum_walk+=sizeof(u32);
}
if(checksum) {
printk("Checksum invalid (%08x)!\n", checksum);
return 0;
}
data += sizeof(dictionary_header_t);
dicthead = target_long(header->length);
memcpy(dict, data, dicthead);
reloc_table=(ucell *)(data+dicthead);
#ifdef CONFIG_DEBUG_DICTIONARY
printk("\nmoving dictionary (%x bytes) to %x\n",
(ucell)dicthead, (ucell)dict);
printk("\ndynamic relocation...");
#endif
for (walk = (ucell *) dict; walk < (ucell *) (dict + dicthead);
walk++) {
int pos, bit, l;
l=(walk-(ucell *)dict);
pos=l/BITS;
bit=l&~(-BITS);
if (reloc_table[pos] & target_ucell((ucell)1ULL << bit)) {
// printk("%lx, pos %x, bit %d\n",*walk, pos, bit);
write_ucell(walk, read_ucell(walk)+pointer2cell(dict));
}
}
#ifdef CONFIG_DEBUG_DICTIONARY
printk(" done.\n");
#endif
last = (ucell *)(dict + target_ucell(header->last));
return -1;
}
static void write_dictionary(const char *filename)
{
FILE *f;
unsigned char *write_data, *walk_data;
int write_len;
dictionary_header_t *header;
u32 checksum=0;
/*
* get memory for dictionary
*/
write_len = sizeof(dictionary_header_t)+dicthead+relocation_length*sizeof(cell);
write_data = malloc(write_len);
if(!write_data) {
printk("panic: can't allocate memory for output dictionary (%d"
" bytes\n", write_len);
exit(1);
}
memset(write_data, 0, write_len);
/*
* prepare dictionary header
*/
header = (dictionary_header_t *)write_data;
*header = (dictionary_header_t){
.signature = DICTID,
.version = 2,
.cellsize = sizeof(ucell),
#ifdef CONFIG_BIG_ENDIAN
.endianess = -1,
#else
.endianess = 0,
#endif
.checksum = 0,
.compression = 0,
.relocation = -1,
.length = target_ulong((uint32_t)dicthead),
.last = target_ucell((ucell)((unsigned long)last
- (unsigned long)dict)),
};
/*
* prepare dictionary data
*/
walk_data=write_data+sizeof(dictionary_header_t);
memcpy (walk_data, dict, dicthead);
/*
* prepare relocation data.
* relocation_address is zero when writing a dictionary core.
*/
if (relocation_address) {
#ifdef CONFIG_DEBUG_DICTIONARY
printk("writing %d reloc cells \n",relocation_length);
#endif
walk_data += dicthead;
memcpy(walk_data, relocation_address,
relocation_length*sizeof(cell));
/* free relocation information */
free(relocation_address);
relocation_address=NULL;
} else {
header->relocation=0;
}
/*
* Calculate Checksum
*/
walk_data=write_data;
while (walk_data<write_data+write_len) {
checksum+=read_long(walk_data);
walk_data+=sizeof(u32);
}
checksum=(u32)-checksum;
header->checksum=target_long(checksum);
if (verbose) {
dump_header(header);
}
f = fopen(filename, "w");
if (!f) {
printk("panic: can't write to dictionary '%s'.\n", filename);
exit(1);
}
fwrite(write_data, write_len, 1, f);
free(write_data);
fclose(f);
#ifdef CONFIG_DEBUG_DICTIONARY
printk("wrote dictionary to file %s.\n", filename);
#endif
}
/*
* Write dictionary as a list of ucell hex values to filename. Array
* header and end lines are not generated.
*
* Cells with relocations are output using the expression
* DICTIONARY_BASE + value.
*
* Define some helpful constants.
*/
static void write_dictionary_hex(const char *filename)
{
FILE *f;
ucell *walk;
f = fopen(filename, "w");
if (!f) {
printk("panic: can't write to dictionary '%s'.\n", filename);
exit(1);
}
for (walk = (ucell *)dict; walk < (ucell *)(dict + dicthead); walk++) {
int pos, bit, l;
ucell val;
l = (walk - (ucell *)dict);
pos = l / BITS;
bit = l & ~(-BITS);
val = read_ucell(walk);
if (relocation_address[pos] & target_ucell((ucell)1ULL << bit)) {
fprintf(f, "DICTIONARY_BASE + 0x%" FMT_CELL_x
",\n", val);
} else {
fprintf(f, "0x%" FMT_CELL_x",\n", val);
}
}
fprintf(f, "#define FORTH_DICTIONARY_LAST 0x%" FMT_CELL_x"\n",
(ucell)((unsigned long)last - (unsigned long)dict));
fprintf(f, "#define FORTH_DICTIONARY_END 0x%" FMT_CELL_x"\n",
(ucell)dicthead);
fclose(f);
#ifdef CONFIG_DEBUG_DICTIONARY
printk("wrote dictionary to file %s.\n", filename);
#endif
}
