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Diffstat (limited to 'cpukit/score/include/rtems/score/isr.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/isr.h | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/cpukit/score/include/rtems/score/isr.h b/cpukit/score/include/rtems/score/isr.h deleted file mode 100644 index 77c3f8663e..0000000000 --- a/cpukit/score/include/rtems/score/isr.h +++ /dev/null @@ -1,239 +0,0 @@ -/* isr.h - * - * This include file contains all the constants and structures associated - * with the management of processor interrupt levels. This handler - * supports interrupt critical sections, vectoring of user interrupt - * handlers, nesting of interrupts, and manipulating interrupt levels. - * - * 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 __RTEMS_ISR_h -#define __RTEMS_ISR_h - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * The following type defines the control block used to manage - * the interrupt level portion of the status register. - */ - -typedef unsigned32 ISR_Level; - -/* - * The following type defines the control block used to manage - * the vectors. - */ - -typedef unsigned32 rtems_vector_number; - -/* - * Return type for ISR Handler - */ - -typedef void rtems_isr; - -/* - * Pointer to an ISR Handler - */ - -typedef rtems_isr ( *rtems_isr_entry )( - rtems_vector_number - ); -/* - * The following is TRUE if signals have been sent to the currently - * executing thread by an ISR handler. - */ - -EXTERN boolean _ISR_Signals_to_thread_executing; - -/* - * The following contains the interrupt service routine nest level. - * When this variable is zero, a thread is executing. - */ - -EXTERN unsigned32 _ISR_Nest_level; - -/* - * The following declares the RTEMS Vector Table. Application - * interrupt service routines are vectored by RTEMS via this table. - */ - -EXTERN rtems_isr_entry _ISR_Vector_table[CPU_INTERRUPT_NUMBER_OF_VECTORS]; - -/* - * _ISR_Handler_initialization - * - * DESCRIPTION: - * - * This routine performs the initialization necessary for this handler. - */ - -STATIC INLINE void _ISR_Handler_initialization ( void ); - -/* - * _ISR_Disable - * - * DESCRIPTION: - * - * This routine disables all interrupts so that a critical section - * of code can be executing without being interrupted. Upon return, - * the argument _level will contain the previous interrupt mask level. - */ - -#define _ISR_Disable( _level ) \ - _CPU_ISR_Disable( _level ) - -/* - * _ISR_Enable - * - * DESCRIPTION: - * - * This routine enables interrupts to the previous interrupt mask - * LEVEL. It is used at the end of a critical section of code to - * enable interrupts so they can be processed again. - */ - -#define _ISR_Enable( _level ) \ - _CPU_ISR_Enable( _level ) - -/* - * _ISR_Flash - * - * DESCRIPTION: - * - * This routine temporarily enables interrupts to the previous - * interrupt mask level and then disables all interrupts so that - * the caller can continue into the second part of a critical - * section. This routine is used to temporarily enable interrupts - * during a long critical section. It is used in long sections of - * critical code when a point is reached at which interrupts can - * be temporarily enabled. Deciding where to flash interrupts - * in a long critical section is often difficult and the point - * must be selected with care to insure that the critical section - * properly protects itself. - */ - -#define _ISR_Flash( _level ) \ - _CPU_ISR_Flash( _level ) - -/* - * _ISR_Is_in_progress - * - * DESCRIPTION: - * - * This function returns TRUE if the processor is currently servicing - * and interrupt and FALSE otherwise. A return value of TRUE indicates - * that the caller is an interrupt service routine, NOT a thread. The - * directives available to an interrupt service routine are restricted. - */ - -STATIC INLINE boolean _ISR_Is_in_progress( void ); - -/* - * _ISR_Install_vector - * - * DESCRIPTION: - * - * This routine installs new_handler as the interrupt service routine - * for the specified vector. The previous interrupt service routine is - * returned as old_handler. - */ - -#define _ISR_Install_vector( _vector, _new_handler, _old_handler ) \ - _CPU_ISR_install_vector( _vector, _new_handler, _old_handler ) - -/* - * _ISR_Set_level - * - * DESCRIPTION: - * - * This routine sets the current interrupt level to that specified - * by new_level. The new interrupt level is effective when the - * routine exits. - */ - -#define _ISR_Set_level( _new_level ) \ - _CPU_ISR_Set_level( _new_level ) - -/* - * _ISR_Is_vector_number_valid - * - * DESCRIPTION: - * - * This function returns TRUE if the vector is a valid vector number - * for this processor and FALSE otherwise. - */ - -STATIC INLINE boolean _ISR_Is_vector_number_valid ( - rtems_vector_number vector -); - -/* - * _ISR_Is_valid_user_handler - * - * DESCRIPTION: - * - * This function returns TRUE if handler is the entry point of a valid - * use interrupt service routine and FALSE otherwise. - */ - -STATIC INLINE boolean _ISR_Is_valid_user_handler ( - void *handler -); - -/* - * _ISR_Handler - * - * DESCRIPTION: - * - * This routine is the RTEMS interrupt dispatcher. ALL interrupts - * are vectored to this routine so that minimal context can be saved - * and setup performed before the application's high-level language - * interrupt service routine is invoked. After the application's - * interrupt service routine returns control to this routine, it - * will determine if a thread dispatch is necessary. If so, it will - * insure that the necessary thread scheduling operations are - * performed when the outermost interrupt service routine exits. - * - * NOTE: Implemented in assembly language. - */ - -void _ISR_Handler( void ); - -/* - * _ISR_Dispatch - * - * DESCRIPTION: - * - * This routine provides a wrapper so that the routine - * _Thread_Dispatch can be invoked when a reschedule is necessary - * at the end of the outermost interrupt service routine. This - * wrapper is necessary to establish the processor context needed - * by _Thread_Dispatch and to save the processor context which is - * corrupted by _Thread_Dispatch. This context typically consists - * of registers which are not preserved across routine invocations. - * - * NOTE: Implemented in assembly language. - */ - -void _ISR_Dispatch( void ); - -#include <rtems/isr.inl> - -#ifdef __cplusplus -} -#endif - -#endif -/* end of include file */ |