pmm_stack.h

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#pragma once
 
#include <sys/proc.h>
 
typedef struct page_buffer
{
    struct page_buffer* prev;
    void* pages[];
} page_buffer_t;
 
#define PMM_BUFFER_MAX ((PAGE_SIZE - sizeof(page_buffer_t)) / sizeof(void*))
 
typedef struct
{
    page_buffer_t* last;
    uint64_t index;
    uint64_t free;
} pmm_stack_t;
 
void pmm_stack_init(pmm_stack_t* stack);
 
void* pmm_stack_alloc(pmm_stack_t* stack);
 
void pmm_stack_free(pmm_stack_t* stack, void* address);