Subversion Repositories openrisc_me

#ifndef CYGONCE_HAL_ARCH_INC
#define CYGONCE_HAL_ARCH_INC
##=============================================================================
##
##      arch.inc
##
##      H8/300 assembler header file
##
##=============================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
##=============================================================================
#######DESCRIPTIONBEGIN####
##
## Author(s):   yoshinori sato
## Contributors:        yoshinori sato
## Date:        2002-02-14
## Purpose:     Architecture definitions.
## Description: This file contains various definitions and macros that are
##              useful for writing assembly code for the H8300 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_H8300_CPU_INIT_DEFINED
        # Initialize CPU
        .macro  hal_cpu_init
        # Set up the PSW
        ldc     #0xc0,ccr
        .endm
#endif

        # Enable interrupts
        .macro hal_cpu_int_enable
        andc    #0x3f,ccr
        .endm           

        # Disable interrupts
        .macro hal_cpu_int_disable
        orc     #0xc0,ccr
        .endm   

        # Merge the interrupt enable state of the status register in
        # \sr with the current sr.
        .macro  hal_cpu_int_merge sr wk=r0l
        and.b   #0xc0,\sr
        stc     ccr,\wk
        bclr    #7,\wk
        or      \sr,\wk
        ldc     \wk,ccr
        .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_H8300_INTC_DEFINED

#ifndef CYGPKG_HAL_H8300_INTC_INIT_DEFINED
        # initialize all interrupts to disabled
        .macro  hal_intc_init
        .endm
#endif

        .macro  hal_intc_decode vnum
        .endm

#endif

#------------------------------------------------------------------------------
# MMU macros.
        
#ifndef CYGPKG_HAL_H8300_MMU_DEFINED

        .macro  hal_mmu_init
        .endm

#endif  

#------------------------------------------------------------------------------
# MEMC macros.
        
#ifndef CYGPKG_HAL_H8300_MEMC_DEFINED

        .macro  hal_memc_init
        .endm

#endif  
        
#------------------------------------------------------------------------------
# Cache macros.
        
#ifndef CYGPKG_HAL_H8300_CACHE_DEFINED

        .macro  hal_cache_init
        .endm

#endif  

#------------------------------------------------------------------------------
# Diagnostics macros.
        
#ifndef CYGPKG_HAL_H8300_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_H8300_TIMER_DEFINED

        .macro  hal_timer_init
        .endm

#endif  

#------------------------------------------------------------------------------
# Monitor initialization.
        
#ifndef CYGPKG_HAL_H8300_MON_DEFINED

        .macro  hal_mon_init
        .endm

#endif  

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