kernel/kernelmq/paging.h

#ifndef KERNELMQ_INCLUDED_PAGING
#define KERNELMQ_INCLUDED_PAGING 1

#include "config.h"
#include "info.h"

#define PAGE_DIR_ALIGN 4096

#define PAGE_DIR_ADDR(base) ((base) >> 12)

struct PageDir_Entry {
    unsigned int present        : 1;
    unsigned int writable       : 1;
    unsigned int user           : 1;
    unsigned int write_through  : 1;
    unsigned int cache_disabled : 1;
    unsigned int accessed       : 1;
    unsigned int always_0       : 1;
    unsigned int page_size      : 1;
    unsigned int ignored        : 1;
    unsigned int unused         : 3;
    unsigned int addr           : 20;
}
__attribute__((packed));

typedef struct PageDir_Entry PageDir[PAGE_DIR_LENGTH] __attribute__((aligned((PAGE_DIR_ALIGN))));

void paging_enable();

void paging_clear();
void paging_identity();
int paging_mapkernel(const struct KernelMQ_Info *kinfo);
unsigned long paging_load();

#endif