Pyro Internal Functions: Memory

Functions
status_t	AllocateHeapMem (MemHeader_s *psHeader, uint32 *pnAddress, bool bExactAddress, bool bHighest, uint32 nSize)
	Allocates memory for a new memory heap. More...
status_t	FreeHeapMem (MemHeader_s *psHeader, uint32 nAddress)
	Frees memory from the specified memory heap. More...
void	init_pages (uint32 nFirstUsablePage)
	Initializes the structures necessary for allocating pages. More...

Detailed Description

Function Documentation

status_t AllocateHeapMem	(	MemHeader_s *	psHeader,
		uint32 *	pnAddress,
		bool	bExactAddress,
		bool	bHighest,
		uint32	nSize
	)

Allocates memory for a new memory heap.

Parameters

psHeader	the memory pool to use.
pnAddress	a pointer to the address of the memory to use; only used if bExactAddress is true. Will be set to the real address if the call is successful.
bExactAddress	true to use pnAddress.
bHighest	if true then the memory at the highest address will be returned.
nSize	the size in bytes to allocate.

Returns

0 if successful.

See Also

FreeHeapMem()

Author

Arno Klenke (arno_.nosp@m.klen.nosp@m.ke@ya.nosp@m.hoo..nosp@m.de)

status_t FreeHeapMem	(	MemHeader_s *	psHeader,
		uint32	nAddress
	)

Frees memory from the specified memory heap.

Parameters

psHeader	the memory pool to use.
nAddress	the address of the memory to free.

Returns

0 if successful.

See Also

AllocateHeapMem()

Author

Arno Klenke (arno_.nosp@m.klen.nosp@m.ke@ya.nosp@m.hoo..nosp@m.de)

void init_pages

(

uint32

nFirstUsablePage

)

Initializes the structures necessary for allocating pages.

Called by init_kernel() (init.c).

Parameters

nFirstUsablePage

- The address of the first usable page. This parameter is set to the end of the kernel image.

Author

Kurt Skauen (kurt@.nosp@m.athe.nosp@m.os.cx)