31 lines
842 B
C
31 lines
842 B
C
|
#ifndef __LIB_STDLIB_H__
|
||
|
|
# define __LIB_STDLIB_H__
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
|
||
|
|
#define HEAP_BLOCK_MIN (16)
|
||
|
|
struct heap_block
|
||
|
|
{
|
||
|
|
uint16_t status; /* status of the block (1=used,0=free) */
|
||
|
|
uint16_t size; /* size of the block (without block header) */
|
||
|
|
} __attribute__((packed, aligned(2)));
|
||
|
|
|
||
|
|
struct heap_page
|
||
|
|
{
|
||
|
|
void *brk; /* break (address of the limit area) */
|
||
|
|
size_t size; /* Page size (without header) */
|
||
|
|
struct heap_page *next; /* Next heap page */
|
||
|
|
struct heap_block heap; /* Start of block informations */
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
// Functions
|
||
|
|
extern void *malloc(size_t size);
|
||
|
|
extern void *calloc(size_t nmemb, size_t size);
|
||
|
|
extern void *realloc(void *ptr, size_t size);
|
||
|
|
extern void *reallocarray(void *ptr, size_t nmemb, size_t size);
|
||
|
|
extern void free(void *ptr);
|
||
|
|
|
||
|
|
#endif /*__LIB_STDLIB_H__*/
|