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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [score/] [src/] [objectgetisr.c] - Rev 1765
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/* * Object Handler * * * COPYRIGHT (c) 1989-1999. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.OARcorp.com/rtems/license.html. * * objectgetisr.c,v 1.3 2001/11/07 22:41:51 joel Exp */ #include <rtems/system.h> #include <rtems/score/address.h> #include <rtems/score/chain.h> #include <rtems/score/object.h> #if defined(RTEMS_MULTIPROCESSING) #include <rtems/score/objectmp.h> #endif #include <rtems/score/thread.h> #include <rtems/score/wkspace.h> #include <rtems/score/sysstate.h> #include <rtems/score/isr.h> /*PAGE * * _Objects_Get_isr_disable * * This routine sets the object pointer for the given * object id based on the given object information structure. * * Input parameters: * information - pointer to entry in table for this class * id - object id to search for * location - address of where to store the location * level - pointer to previous interrupt level * * Output parameters: * returns - address of object if local * location - one of the following: * OBJECTS_ERROR - invalid object ID * OBJECTS_REMOTE - remote object * OBJECTS_LOCAL - local object * *level - previous interrupt level */ Objects_Control *_Objects_Get_isr_disable( Objects_Information *information, Objects_Id id, Objects_Locations *location, ISR_Level *level_p ) { Objects_Control *the_object; unsigned32 index; ISR_Level level; #if defined(RTEMS_MULTIPROCESSING) index = id - information->minimum_id + 1; #else /* index = _Objects_Get_index( id ); */ index = id & 0x0000ffff; /* This should work but doesn't always :( */ /* index = (unsigned16) id; */ #endif _ISR_Disable( level ); if ( information->maximum >= index ) { if ( (the_object = information->local_table[ index ]) != NULL ) { *location = OBJECTS_LOCAL; *level_p = level; return the_object; } _ISR_Enable( level ); *location = OBJECTS_ERROR; return NULL; } _ISR_Enable( level ); *location = OBJECTS_ERROR; #if defined(RTEMS_MULTIPROCESSING) _Objects_MP_Is_remote( information, id, location, &the_object ); return the_object; #else return NULL; #endif }