// basis/compiler/codegen/gc-maps/gc-maps.factor
// basis/vm/vm.factor
struct gc_info {
- uint32_t scrub_d_count;
- uint32_t scrub_r_count;
uint32_t gc_root_count;
uint32_t derived_root_count;
uint32_t return_address_count;
cell callsite_bitmap_size() {
- return scrub_d_count + scrub_r_count + gc_root_count;
+ return gc_root_count;
}
cell total_bitmap_size() {
return (uint8_t*)base_pointer_map() - total_bitmap_bytes();
}
- cell callsite_scrub_d(cell index) {
- cell base = 0;
- return base + index * scrub_d_count;
- }
-
- cell callsite_scrub_r(cell index) {
- cell base = return_address_count * scrub_d_count;
- return base + index * scrub_r_count;
- }
cell callsite_gc_roots(cell index) {
- cell base =
- return_address_count * scrub_d_count +
- return_address_count * scrub_r_count;
- return base + index * gc_root_count;
+ return index * gc_root_count;
}
uint32_t lookup_base_pointer(cell index, cell derived_root) {
return base_pointer_map()[index * derived_root_count + derived_root];
}
- cell return_address_index(cell return_address);
+ cell return_address_index(cell return_address) {
+ uint32_t* return_address_array = return_addresses();
+
+ for (cell i = 0; i < return_address_count; i++) {
+ if (return_address == return_address_array[i])
+ return i;
+ }
+
+ return (cell)-1;
+ }
};
}