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#ifndef CYGONCE_HAL_ARCH_INC
#define CYGONCE_HAL_ARCH_INC
##=============================================================================
##
##      arch.inc
##
##      MN10300 assembler header file
##
##=============================================================================
## ####ECOSGPLCOPYRIGHTBEGIN####                                            
## -------------------------------------------                              
## This file is part of eCos, the Embedded Configurable Operating System.   
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
##
## eCos is free software; you can redistribute it and/or modify it under    
## the terms of the GNU General Public License as published by the Free     
## Software Foundation; either version 2 or (at your option) any later      
## version.                                                                 
##
## eCos is distributed in the hope that it will be useful, but WITHOUT      
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
## FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
## for more details.                                                        
##
## You should have received a copy of the GNU General Public License        
## along with eCos; if not, write to the Free Software Foundation, Inc.,    
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
##
## As a special exception, if other files instantiate templates or use      
## macros or inline functions from this file, or you compile this file      
## and link it with other works to produce a work based on this file,       
## this file does not by itself cause the resulting work to be covered by   
## the GNU General Public License. However the source code for this file    
## must still be made available in accordance with section (3) of the GNU   
## General Public License v2.                                               
##
## This exception does not invalidate any other reasons why a work based    
## on this file might be covered by the GNU General Public License.         
## -------------------------------------------                              
## ####ECOSGPLCOPYRIGHTEND####                                              
##=============================================================================
#######DESCRIPTIONBEGIN####
##
## Author(s):   nickg
## Contributors:        nickg, dmoseley
## Date:        1997-10-16
## Purpose:     Architecture definitions.
## Description: This file contains various definitions and macros that are
##              useful for writing assembly code for the MN10300 CPU family.
## Usage:
##              #include <cyg/hal/arch.inc>
##              ...
##              
##
######DESCRIPTIONEND####
##
##=============================================================================

#include <pkgconf/hal.h>
        
#include <cyg/hal/variant.inc>

##-----------------------------------------------------------------------------
## CPU specific macros. These provide a common assembler interface to
## operations that may have CPU specific implementations on different
## variants of the architecture.                

#ifndef CYGPKG_HAL_MN10300_CPU_INIT_DEFINED
        # Initialize CPU
        .macro  hal_cpu_init
        # Set up the PSW
        mov     0x0700,d0
        mov     d0,psw
        .endm
#endif

        # Enable interrupts
        .macro hal_cpu_int_enable
        or      0x0800,psw
        .endm           

        # Disable interrupts
        .macro hal_cpu_int_disable
        and     0xF7ff,psw
        .endm   

        # Merge the interrupt enable state of the status register in
        # \sr with the current sr.
        .macro  hal_cpu_int_merge sr
        movm    [d3],(sp)
        and     0x00000F00,\sr          # isolate IE and IM bits
        hal_cpu_get_psw d3
        and     0xfffff0ff,d3
        or      \sr,d3
        hal_cpu_set_psw d3
        movm    (sp),[d3]
        .endm

        # Enable further exception processing, and disable
        # interrupt processing.
        .macro hal_cpu_except_enable
        .endm           
        
        # Return from exception.
        .macro  hal_cpu_eret pc,sr
        .endm
        
##-----------------------------------------------------------------------------
# Default interrupt decoding macros.

#ifndef CYGPKG_HAL_MN10300_INTC_DEFINED

#ifndef CYGPKG_HAL_MN10300_INTC_INIT_DEFINED
        # initialize all interrupts to disabled
        .macro  hal_intc_init
        .endm
#endif

#endif

#ifndef CYGPKG_HAL_MN10300_INTC_DECODE_DEFINED
        .macro  hal_intc_decode dreg,areg,dreg1
        .endm

#endif

#------------------------------------------------------------------------------
# MMU macros.
        
#ifndef CYGPKG_HAL_MN10300_MMU_DEFINED

        .macro  hal_mmu_init
        .endm

#endif  

#------------------------------------------------------------------------------
# MEMC macros.
        
#ifndef CYGPKG_HAL_MN10300_MEMC_DEFINED

        .macro  hal_memc_init
        .endm

#endif  
        
#------------------------------------------------------------------------------
# Cache macros.
        
#ifndef CYGPKG_HAL_MN10300_CACHE_DEFINED

        .macro  hal_cache_init
        .endm

#endif  

#------------------------------------------------------------------------------
# Diagnostics macros.
        
#ifndef CYGPKG_HAL_MN10300_DIAG_DEFINED

        .macro  hal_diag_init
        .endm

        .macro  hal_diag_excpt_start
        .endm

        .macro  hal_diag_intr_start
        .endm

        .macro  hal_diag_restore
        .endm

        .macro  hal_diag_data
        .endm
#endif  

#------------------------------------------------------------------------------
# Timer initialization.
        
#ifndef CYGPKG_HAL_MN10300_TIMER_DEFINED

        .macro  hal_timer_init
        .endm

#endif  

#------------------------------------------------------------------------------
# Monitor initialization.
        
#ifndef CYGPKG_HAL_MN10300_MON_DEFINED

        .macro  hal_mon_init
        .endm

#endif  

#------------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_ARCH_INC
# end of arch.inc