95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
#ifndef CRASHPOWEROS_MEMORY_H
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#define CRASHPOWEROS_MEMORY_H
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#include <stddef.h>
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#include <stdint.h>
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#include "isr.h"
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#define KHEAP_INITIAL_SIZE 0xf00000
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#define KHEAP_START 0xc0000000
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#define STACK_SIZE 32768
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#define INDEX_FROM_BIT(a) (a / (8*4))
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#define OFFSET_FROM_BIT(a) (a % (8*4))
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typedef char ALIGN[16];
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#include "multiboot.h"
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typedef struct page {
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uint32_t present: 1;
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uint32_t rw: 1;
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uint32_t user: 1;
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uint32_t accessed: 1;
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uint32_t dirty: 1;
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uint32_t unused: 7;
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uint32_t frame: 20;
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} page_t;
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typedef struct page_table {
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page_t pages[1024];
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} page_table_t;
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typedef struct page_directory {
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page_table_t *tables[1024];
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uint32_t tablesPhysical[1024];
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uint32_t physicalAddr;
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} page_directory_t;
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typedef union header {
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struct {
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uint32_t size;
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uint32_t is_free;
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union header *next;
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} s;
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ALIGN stub;
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} header_t;
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uint32_t memory_usage();
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void *memcpy(void *dst_, const void *src_, uint32_t size);
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int memcmp(const void *a_, const void *b_, uint32_t size);
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void *memset(void *s, int c, size_t n);
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void *memmove(void *dest, const void *src, size_t num);
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void switch_page_directory(page_directory_t *dir);
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page_t *get_page(uint32_t address, int make, page_directory_t *dir);
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void alloc_frame(page_t *page, int is_kernel, int is_writable);
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uint32_t first_frame();
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void page_fault(registers_t *regs);
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page_directory_t *clone_directory(page_directory_t *src);
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void flush_tlb();
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void *ksbrk(int incr);
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void *alloc(uint32_t size);
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void kfree(void *ptr);
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uint32_t kmalloc_a(uint32_t size);
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uint32_t kmalloc_p(uint32_t size, uint32_t *phy);
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uint32_t kmalloc(size_t size);
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uint32_t kmalloc_ap(uint32_t size, uint32_t *phys);
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void init_page(multiboot_t *mboot);
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void memclean(char *s, int len);
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void *realloc(void *ptr, uint32_t size);
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page_t *get_phy_page(uint32_t address, int make, page_directory_t *dir);
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#endif //CRASHPOWEROS_MEMORY_H
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