/**
 * com1553 - MIL-1553 Communication Library for Herschel
 *
 * Filename             : \file irq2.s
 *
 * Purposes             : \brief [DONE] com1553 - Module holder of mil1553's irq management
 *
 * Logical Task         : TMTC
 *
 * Author               : Scige
 *
 * Last Developer       : $Author: annadg $
 *
 * Revision             : $Revision: 1.11 $
 *
 * Checkout Tag         : $Name:  $
 *
 * Last Modification    : $Date: 2009/01/15 12:17:09 $
 *
 * Location             : $RCSfile: irq2.s,v $
 *
 * \version             : $Header: /home/local/cvsrep/OBS_FM/1553_Lib/irq2.s,v 1.11 2009/01/15 12:17:09 annadg Exp $
 */

/*
 * Commitments History :
 * As reported in Main cvs Documentation
 * ( https://www.cvshome.org/docs/manual/cvs-1.11.18/cvs_12.html#SEC102 )
 * The Modification Log has been posted at End Of File.
 */
 
// ---------------------------------------------------------------------------//

/*-- (c) 2005 Nino Inaf - Ifsi --*/

/*
 * Commitments History :
 * As reported in Main cvs Documentation
 * ( https://www.cvshome.org/docs/manual/cvs-1.11.18/cvs_12.html#SEC102 )
 * The Modification Log has been posted at End Of File.
 */

/**
 * Function name : irq2()
 *
 * Purpose:
 *	This function is called when an interrupt arrives from the 1553 interface.
 *	The event ISR_1553_EVENT is then raised and the control returns to VIRTUOSO
 *
 * Syntax:
 *	irq2();
 *
 * Input:
 *	none
 *
 * Output:
 *	none
 *
 * Return:
 *	none
 *
 * Virtuoso Objects:
 *	ISR_1553_EVENT
 *	Event handler:	isr1553
 *	Waiting task:	tmtc
 *
 */

#if OBSCODE == HIFI_CODE
	#include "macro.h"
#elif OBSCODE == SPIRE_CODE
	#include "macro.h"
#elif OBSCODE == PACS_CODE
	#include "C:\Virtuoso\ADI21020\Inc\macro.h"
#endif

#include "def21020.h"


/*-------------------------------------------------------------*/

#define G_1553_STACK_POINTER 0x8f000100
.segment /pm seg_pmco;
.extern _K_ArgsP;
.extern _Ghost_1553_StackPointer;
.extern _Isr_1553_event;

/*-------------------------------------------------------------*/
	/* nino 17/11/2008 adding an interrupt counter */
	/* used in isr2.s */
.extern _com1553_isr_counter;
/*-------------------------------------------------------------*/

.global _irq2;

_irq2:
	START_ISR;				/* Macro defined in macro.h */
	bit set IMASK IRQ2I;	/* This mask corresponds to IRQ 2 of 21020 */
							 /*0x00000040 I_IRQ2I*/

	r2 = dm(G_1553_STACK_POINTER);
	dm(_Ghost_1553_StackPointer) = r2;
/*-------------------------------------------------------------*/
/* nino 17/11/2008 adding an interrupt counter */
	r2 = dm(_com1553_isr_counter);
	r2 = r2 + 1;
	dm(_com1553_isr_counter) = r2;
/*-------------------------------------------------------------*/

	i4 = dm(_K_ArgsP);
	r2 = dm(_Isr_1553_event); /* This is the event number */
	PRHI_STACK_PSH;

	ENDISR1;				/* Macro defined in macro.h */
.endseg;

/*-------------------------------------------------------------*/
/*
 * Commitments History :
 * $Log: irq2.s,v $
 * Revision 1.11  2009/01/15 12:17:09  annadg
 * interrupt counter added in isr2, counter flag check added in res_check
 *
 * Revision 1.10  2006/10/20 09:22:14  lorenzo
 * 1553 library updated
 *
 * Revision 1.13  2006/10/16 14:19:53  scige
 * Some More Comments
 *
 * Revision 1.12  2006/06/07 11:44:56  scige
 * Some More Comment
 * by Scige John Liu IFSI
 *
 * Revision 1.11  2006/04/27 10:21:44  scige
 * Some more Comment alignement before STRONG COMMENTING
 *
 * Revision 1.10  2006/03/08 17:23:24  daniele
 * changed include scheme and added some comments
 *
 * Revision 1.9  2006/02/15 14:56:57  scige
 * Abstract comment reformatted
 * History log replaced or moved at end of file
 *
 * Revision 1.8  2006/02/15 14:34:03  scige
 * Some more comments restored
 *
 * Revision 1.4  2005/09/16 13:09:40  scige
 * *** empty log message ***
 *
 * Revision 1.2  2005/08/26 12:16:19  scige
 * storage
 *
 * Revision 1.1  2005/08/10 12:53:40  scige
 * Communication Library: 1553
 * com1553
 * Base Common Version of Spire/Pacs OBS
 *
 */