initial import

[ICEs.git] / bfin-asm-math / memory.i

struct _subtable_data {
	int usecount;
};
struct _table_data {
	unsigned char *table;
	struct _subtable_data subtable[64];
};
void reallocate_subtable(struct _table_data *tabledata, unsigned char subentry)
{
	unsigned char subindex = subentry - (256 - 64);
	if (tabledata->subtable[subindex].usecount <= 0)
		osd_die();
}
void release_subtable(struct _table_data *tabledata, unsigned char subentry)
{
	unsigned char subindex = subentry - (256 - 64);
	if (tabledata->subtable[subindex].usecount <= 0)
		osd_die();
}
void install_mem_handler(int end, char *handler_name)
{
	int lmirrorbits;
	int hmirrorbits;
	int lmirrorcount;
	int hmirrorcount;
	struct _table_data *tabledata;
	char prev_entry;
	int cur_index;
	int prev_index;
	for (; hmirrorcount < (1 << hmirrorbits); hmirrorcount++) {
		int hmirrorbase = 0;
		if (cur_index == ((end + hmirrorbase) >> (32 - 18))) {
			if (hmirrorcount != 0
			    && prev_entry == tabledata->table[cur_index]) {
				if (tabledata->table[cur_index] >= (256 - 64))
					release_subtable(tabledata,
							 tabledata->
							 table[cur_index]);
				if (tabledata->table[prev_index] >= (256 - 64))
					reallocate_subtable(tabledata,
							    tabledata->
							    table[prev_index]);
			}
		}
		for (lmirrorcount = 0;
		     lmirrorcount < (1 << lmirrorbits); lmirrorcount++) ;
	}
}