memory.h File Reference

#include <stddef.h>

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Macros
#define	BLK_SZ   4096
	Page size of the architecture.

Functions
void *	alloc_memory (int num_pages)
void	alloc_memory_virt (int num_pages, void *addr)
void *	new_address_space ()
void	copy_data (void *cr3, void *data, size_t size, void *virt_addr)
void *	put_data (void *cr3, void *data, size_t size)
void *	map_phys (void *phys_addr, size_t num_pages)

Function Documentation

alloc_memory()

void* alloc_memory

(

int

num_pages

)

Allocates pages of memory

Parameters

num_pages

The number of pages to allocate

Returns

the start address of the pages

alloc_memory_virt()

void alloc_memory_virt	(	int	num_pages,
		void *	addr
	)

Allocates pages of memory at a specified start address

Parameters

num_pages	The number of pages to allocate
addr	The start address of the pages

copy_data()

void copy_data	(	void *	cr3,
		void *	data,
		size_t	size,
		void *	virt_addr
	)

Copy data into an address space at a specified virtual address

Parameters

cr3	The adress space to copy data to.
data	The data to copy
size	The size of the data
virt_addr	The address to copy the data to in the address space

map_phys()

void* map_phys	(	void *	phys_addr,
		size_t	num_pages
	)

Map physical pages into virtual memory

Parameters

phys_addr	the start of the physical memory block to map
num_pages	the number of pages to map

Returns

the start address of the mapping in virtual memory

new_address_space()

void* new_address_space

(

)

Creates a new address space with kernel mappings

Returns

a pointer to the new address space in physical memory

put_data()

void* put_data	(	void *	cr3,
		void *	data,
		size_t	size
	)

Put data into an address space at an unknown virtual address

Parameters

cr3	The adress space to copy data to.
data	The data to copy
size	The size of the data

Returns

The address that the data was copied to.