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wip: frame_allocator working pretty good (?)

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core: remove physical allocatory
This commit is contained in:
0x35c
2024-11-19 16:57:19 +01:00
parent e8fd6c55eb
commit 3315d85e0c
14 changed files with 61 additions and 471 deletions
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20
headers/memory.h
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@ -21,9 +21,25 @@
#define GET_PAGE_ADDR(pd_index, pt_index) \
((((uint32_t)pd_index * 1024) + (uint32_t)pt_index) * 4096)
#define GET_FRAME(frame_table, i) (frame_table[i / 8] & (1 << (i % 8)))
#define SET_FRAME(frame_table, i, used) \
do { \
if (used) \
frame_table[i / 8] |= (1 << (i % 8)); \
else \
frame_table[i / 8] &= ~(1 << (i % 8)); \
} while (0)
/*
* len is the total size of the zone (ratio starnakin)
* size is the remaining usable size after allocating
* the struct for the linked list
*/
struct frame_zone {
void *addr;
uint32_t first_free_frame;
uint32_t *frame_table;
uint32_t len;
uint32_t size;
uint32_t remaining_frames;
struct frame_zone *next;
@ -40,8 +56,8 @@ extern struct frame_zone *head;
uint32_t *virt_to_phys(uint32_t *virt_addr);
void init_memory(multiboot_info_t *mbd, uint32_t magic);
void *alloc_frames(size_t size);
int free_frames(void *frame_ptr, size_t size);
void *alloc_frame(void);
int free_frame(void *frame_ptr);
void *alloc_pages(size_t size);
int free_pages(void *page_ptr, size_t size);
void init_page_table(uint32_t page_table[1024], uint16_t start);