Syllable 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.
status_t	FreeHeapMem (MemHeader_s *psHeader, uint32 nAddress)
	Frees memory from the specified memory heap.
void	init_pages (uint32 nFirstUsablePage)
	Initializes the structures necessary for allocating pages.

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Function Documentation

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

Allocates memory for a new memory heap.

For internal use only.

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 ([email protected])

status_t FreeHeapMem	(	MemHeader_s *	psHeader,
		uint32	nAddress
	)

Frees memory from the specified memory heap.

For internal use only.

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 ([email protected])

void init_pages

(

uint32

nFirstUsablePage

)

Initializes the structures necessary for allocating pages.

Called by init_kernel() (init.c).

For internal use only.

Parameters:

nFirstUsablePage

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

Author:

Kurt Skauen ([email protected])

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