starnakin/42_KFS
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feature: both physical and virtual allocators should be done

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This commit is contained in:
0x35c
2024-09-26 16:18:06 +02:00
parent 9ade568a64
commit a66f9174f4
19 changed files with 571 additions and 62 deletions
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12
src/memory/frame.c
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@ -4,9 +4,9 @@
#include "kprintf.h"
#include "memory.h"
#include "utils.h"
#define MAX_FRAMES 1048319
#define CEIL(x, y) (((x) + (y) - 1) / (y))
#define GET_FRAME(i) (frame_table[i / 8] & (1 << (i % 8)))
#define SET_FRAME(i, used) \
do { \
@ -21,7 +21,7 @@ extern uint32_t end_kernel;
static uint8_t frame_table[CEIL(MAX_FRAMES, 8)];
static uint32_t remaining_frames = MAX_FRAMES;
void *kalloc_frame(size_t size)
void *alloc_frames(size_t size)
{
const uint32_t nb_frames = CEIL(size, PAGE_SIZE);
if (nb_frames > remaining_frames) {
@ -50,15 +50,15 @@ end:
return NULL;
}
int kfree_frame(void *frame, size_t size)
int free_frames(void *frame_ptr, size_t size)
{
const uint32_t nb_frames = CEIL(size, PAGE_SIZE);
const uint32_t start = (frame - (void *)&end_kernel) / PAGE_SIZE;
const uint32_t start = (frame_ptr - (void *)&end_kernel) / PAGE_SIZE;
if (start > MAX_FRAMES || frame < (void *)&end_kernel) {
if (start > MAX_FRAMES || frame_ptr < (void *)&end_kernel) {
kprintf(KERN_WARNING "Address out of range\n");
return -1;
} else if ((uint32_t)frame % PAGE_SIZE) {
} else if ((uint32_t)frame_ptr % PAGE_SIZE) {
kprintf(KERN_WARNING "Invalid address\n");
return -1;
} else if (start + nb_frames > MAX_FRAMES) {