wip: memory change

This commit is contained in:
2024-10-18 14:45:37 +02:00
parent 9e85807a09
commit 7128f2640a
21 changed files with 121 additions and 76 deletions

View File

@ -2,11 +2,12 @@
#include <stddef.h>
#include <stdint.h>
#include "debug.h"
#include "kprintf.h"
#include "memory.h"
#include "utils.h"
#define MAX_FRAMES (0xC0000000 / PAGE_SIZE)
#define MAX_FRAMES (HEAP_END / PAGE_SIZE)
static uint8_t frame_table[MAX_FRAMES];
static uint32_t remaining_frames = MAX_FRAMES;
@ -37,16 +38,19 @@ void *alloc_frames(size_t size)
MAX_FRAMES);
return NULL;
}
for (size_t j = 0; j < nb_frames; j++)
for (size_t j = 0; j < nb_frames; j++) {
assert(j + i < MAX_FRAMES);
frame_table[j + i] = 1;
}
assert(remaining_frames >= nb_frames);
remaining_frames -= nb_frames;
return (void *)(i * PAGE_SIZE);
return (void *)(i * PAGE_SIZE); // WARNING: address translation cramptés
}
int free_frames(void *frame_ptr, size_t size)
{
const uint32_t nb_frames = CEIL(size, PAGE_SIZE);
const uint32_t start = (uint32_t)frame_ptr / PAGE_SIZE;
const uint32_t start = (uint32_t)(frame_ptr + HEAP_END) / PAGE_SIZE;
if (start > MAX_FRAMES) {
kprintf(KERN_WARNING "Address out of range\n");