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/* stack.h
*
* This include file contains all information about the thread
* Stack Handler. This Handler provides mechanisms which can be used to
* initialize and utilize stacks.
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#ifndef __STACK_h
#define __STACK_h
#ifdef __cplusplus
extern "C" {
#endif
/*
* The following constant defines the minimum stack size which every
* thread must exceed.
*/
#define STACK_MINIMUM_SIZE CPU_STACK_MINIMUM_SIZE
/*
* The following defines the control block used to manage each stack.
*/
typedef struct {
unsigned32 size; /* stack size */
void *area; /* low memory addr of stack */
} Stack_Control;
/*
* _Stack_Initialize
*
* DESCRIPTION:
*
* This routine initializes the_stack record to indicate that
* size bytes of memory starting at starting_address have been
* reserved for a stack.
*/
STATIC INLINE void _Stack_Initialize (
Stack_Control *the_stack,
void *starting_address,
unsigned32 size
);
/*
* _Stack_Is_enough
*
* DESCRIPTION:
*
* This function returns TRUE if size bytes is enough memory for
* a valid stack area on this processor, and FALSE otherwise.
*/
STATIC INLINE boolean _Stack_Is_enough (
unsigned32 size
);
/*
* _Stack_Adjust_size
*
* DESCRIPTION:
*
* This function increases the stack size to insure that the thread
* has the desired amount of stack space after the initial stack
* pointer is determined based on alignment restrictions.
*
* NOTE:
*
* The amount of adjustment for alignment is CPU dependent.
*/
STATIC INLINE unsigned32 _Stack_Adjust_size (
unsigned32 size
);
#include <rtems/score/stack.inl>
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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