34 lines
719 B
C
34 lines
719 B
C
#ifndef BASEMEM_H
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#define BASEMEM_H
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#ifdef ASSEMBLY
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/* Must match sizeof(struct free_base_memory_header) */
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#define FREE_BASEMEM_HEADER_SIZE 8
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#else /* ASSEMBLY */
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#include "stdint.h"
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/* Structures that we use to represent a free block of base memory */
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#define FREE_BLOCK_MAGIC ( ('!'<<0) + ('F'<<8) + ('R'<<16) + ('E'<<24) )
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struct free_base_memory_header {
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uint32_t magic;
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uint32_t size_kb;
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};
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union free_base_memory_block {
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struct free_base_memory_header;
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char bytes[1024];
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};
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/* Function prototypes */
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extern uint32_t get_free_base_memory ( void );
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extern void * alloc_base_memory ( size_t size );
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extern void free_base_memory ( void *ptr, size_t size );
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#endif /* ASSEMBLY */
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#endif /* BASEMEM_H */
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