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/* asr.h
*
* This include file contains all the constants and structures associated
* with the Asynchronous Signal Handler. This Handler provides the low-level
* support required by the Signal Manager.
*
* 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_ASR_h
#define __RTEMS_ASR_h
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/modes.h>
/*
*
* The following type defines the control block used to manage
* each signal set.
*/
typedef unsigned32 rtems_signal_set;
/*
* Return type for ASR Handler
*/
typedef void rtems_asr;
/*
* The following type corresponds to the applications asynchronous
* signal processing routine.
*/
typedef rtems_asr ( *rtems_asr_entry )(
rtems_signal_set
);
/*
*
* The following defines the control structure used to manage
* signals. Each thread has a copy of this record.
*/
typedef struct {
rtems_asr_entry handler; /* address of RTEMS_ASR */
Modes_Control mode_set; /* RTEMS_ASR mode */
rtems_signal_set signals_posted; /* signal set */
rtems_signal_set signals_pending; /* pending signal set */
unsigned32 nest_level; /* nest level of RTEMS_ASR */
} ASR_Information;
/*
* The following constants define the individual signals which may
* be used to compose a signal set.
*/
#define RTEMS_SIGNAL_0 0x00000001
#define RTEMS_SIGNAL_1 0x00000002
#define RTEMS_SIGNAL_2 0x00000004
#define RTEMS_SIGNAL_3 0x00000008
#define RTEMS_SIGNAL_4 0x00000010
#define RTEMS_SIGNAL_5 0x00000020
#define RTEMS_SIGNAL_6 0x00000040
#define RTEMS_SIGNAL_7 0x00000080
#define RTEMS_SIGNAL_8 0x00000100
#define RTEMS_SIGNAL_9 0x00000200
#define RTEMS_SIGNAL_10 0x00000400
#define RTEMS_SIGNAL_11 0x00000800
#define RTEMS_SIGNAL_12 0x00001000
#define RTEMS_SIGNAL_13 0x00002000
#define RTEMS_SIGNAL_14 0x00004000
#define RTEMS_SIGNAL_15 0x00008000
#define RTEMS_SIGNAL_16 0x00010000
#define RTEMS_SIGNAL_17 0x00020000
#define RTEMS_SIGNAL_18 0x00040000
#define RTEMS_SIGNAL_19 0x00080000
#define RTEMS_SIGNAL_20 0x00100000
#define RTEMS_SIGNAL_21 0x00200000
#define RTEMS_SIGNAL_22 0x00400000
#define RTEMS_SIGNAL_23 0x00800000
#define RTEMS_SIGNAL_24 0x01000000
#define RTEMS_SIGNAL_25 0x02000000
#define RTEMS_SIGNAL_26 0x04000000
#define RTEMS_SIGNAL_27 0x08000000
#define RTEMS_SIGNAL_28 0x10000000
#define RTEMS_SIGNAL_29 0x20000000
#define RTEMS_SIGNAL_30 0x40000000
#define RTEMS_SIGNAL_31 0x80000000
/*
* _ASR_Initialize
*
* DESCRIPTION:
*
* This routine initializes the given RTEMS_ASR information record.
*/
STATIC INLINE void _ASR_Initialize (
ASR_Information *information
);
/*
* _ASR_Swap_signals
*
* DESCRIPTION:
*
* This routine atomically swaps the pending and posted signal
* sets. This is done when the thread alters its mode in such a
* way that the RTEMS_ASR disable/enable flag changes.
*/
STATIC INLINE void _ASR_Swap_signals (
ASR_Information *information
);
/*
* _ASR_Is_null_handler
*
* DESCRIPTION:
*
* This function returns TRUE if the given asr_handler is NULL and
* FALSE otherwise.
*/
STATIC INLINE boolean _ASR_Is_null_handler (
rtems_asr_entry asr_handler
);
/*
* _ASR_Are_signals_pending
*
* DESCRIPTION:
*
* This function returns TRUE if there are signals pending in the
* given RTEMS_ASR information record and FALSE otherwise.
*/
STATIC INLINE boolean _ASR_Are_signals_pending (
ASR_Information *information
);
/*
* _ASR_Post_signals
*
* DESCRIPTION:
*
* This routine posts the given signals into the signal_set
* passed in. The result is returned to the user in signal_set.
*
* NOTE: This must be implemented as a macro.
*/
STATIC INLINE void _ASR_Post_signals(
rtems_signal_set signals,
rtems_signal_set *signal_set
);
#include <rtems/asr.inl>
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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