memory.h File Reference

#include <stddef.h>

Go to the source code of this file.

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 *address_space, void *data, size_t size, void *virt_addr)
void *	put_data (void *address_space, 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 *	address_space,
		void *	data,
		size_t	size,
		void *	virt_addr
	)

Copy data into an address space at a specified virtual address

Parameters

address_space	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 *	address_space,
		void *	data,
		size_t	size
	)

Put data into an address space at an unknown virtual address

Parameters

address_space	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.