-struct compat_delta {
- struct compat_delta *next;
- unsigned int offset;
- short delta;
-};
-
-static struct compat_delta *compat_offsets = NULL;
-
-static int compat_add_offset(unsigned int offset, short delta)
-{
- struct compat_delta *tmp;
-
- tmp = kmalloc(sizeof(struct compat_delta), GFP_KERNEL);
- if (!tmp)
- return -ENOMEM;
- tmp->offset = offset;
- tmp->delta = delta;
- if (compat_offsets) {
- tmp->next = compat_offsets->next;
- compat_offsets->next = tmp;
- } else {
- compat_offsets = tmp;
- tmp->next = NULL;
- }
- return 0;
-}
-
-static void compat_flush_offsets(void)
-{
- struct compat_delta *tmp, *next;
-
- if (compat_offsets) {
- for(tmp = compat_offsets; tmp; tmp = next) {
- next = tmp->next;
- kfree(tmp);
- }
- compat_offsets = NULL;
- }
-}
-
-static short compat_calc_jump(unsigned int offset)
-{
- struct compat_delta *tmp;
- short delta;
-
- for(tmp = compat_offsets, delta = 0; tmp; tmp = tmp->next)
- if (tmp->offset < offset)
- delta += tmp->delta;
- return delta;
-}
-