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Tom-on
2025-04-30 18:27:18 +02:00
parent f4b10746d6
commit a48fa362d0
10 changed files with 404 additions and 43 deletions
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kernel/src/pmm.c
+6 -6
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@@ -83,19 +83,19 @@ int pmm_init(void) {
return 0;
}
void* pmm_alloc(void) {
if (pmm_bitmap.blocks - pmm_bitmap.used == 0) return NULL;
uint32_t pmm_alloc(void) {
if (pmm_bitmap.blocks - pmm_bitmap.used == 0) return 0;
size_t base = bmap_get_area(&pmm_bitmap, 1, 0);
if (base == BMAP_NOT_FOUND) return NULL;
if (base == BMAP_NOT_FOUND) return 0;
bmap_set(&pmm_bitmap, base, 1);
return bmap_ptr(&pmm_bitmap, base);
return (uint32_t)bmap_ptr(&pmm_bitmap, base);
}
void pmm_free(void* page) {
size_t base = (size_t)page / BLOCK_SIZE;
void pmm_free(uint32_t page) {
size_t base = page / BLOCK_SIZE;
bmap_set_area(&pmm_bitmap, base, 1, 0);
bmap_set(&pmm_bitmap, 0, 1);
}