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#ifndef CYGONCE_HAL_VAR_ARCH_H

#define CYGONCE_HAL_VAR_ARCH_H

//==========================================================================

//

//      var_arch.h

//

//      Architecture specific abstractions

//

//==========================================================================

//####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):    nickg

// Contributors: nickg, dmoseley

// Date:         1999-02-17

// Purpose:      Define architecture abstractions

// Description:  This file contains any extra or modified definitions for

//               this variant of the architecture.

// Usage:        #include <cyg/hal/var_arch.h>

//              

//####DESCRIPTIONEND####

//

//==========================================================================

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>

//--------------------------------------------------------------------------

// Processor Status word bitmasks

#define HAL_ARCH_AM33_PSW_nSL           (1L << 16)

#define HAL_ARCH_AM33_PSW_ML            (1L << 19)

#define HAL_ARCH_AM33_PSW_FE            (1L << 20)

//--------------------------------------------------------------------------

// Processor saved states:

typedef struct HAL_SavedRegisters

{

    // These are common to all saved states and are in the order

    // stored and loaded by the movm instruction.

    CYG_ADDRWORD        vector;         /* Vector number/dummy          */

    CYG_ADDRWORD        lar;            /* Loop address register        */

    CYG_ADDRWORD        lir;            /* Loop instruction register    */

    CYG_ADDRWORD        mdr;            /* Multiply/Divide register     */

    CYG_ADDRWORD        a1;

    CYG_ADDRWORD        a0;

    CYG_ADDRWORD        d1;

    CYG_ADDRWORD        d0;

    CYG_ADDRWORD        a3;

    CYG_ADDRWORD        a2;

    CYG_ADDRWORD        d3;

    CYG_ADDRWORD        d2;

    CYG_ADDRWORD        mcvf;           /* MAC overflow flag            */

    CYG_ADDRWORD        mcrl;           /* MAC register low             */

    CYG_ADDRWORD        mcrh;           /* MAC register high            */

    CYG_ADDRWORD        mdrq;           /* Fast multiply/divide register*/

    CYG_ADDRWORD        e1;             /* extended registers           */

    CYG_ADDRWORD        e0;

    CYG_ADDRWORD        e7;

    CYG_ADDRWORD        e6;

    CYG_ADDRWORD        e5;

    CYG_ADDRWORD        e4;

    CYG_ADDRWORD        e3;

    CYG_ADDRWORD        e2;

    /* On interrupts the PC and PSW are pushed automatically by the     */

    /* CPU and SP is pushed for debugging reasons. On a thread switch   */

    /* the saved context is made to look the same.                      */

    CYG_ADDRWORD  sp;             /* Saved copy of SP in some states      */

    CYG_ADDRWORD  psw;            /* Status word                          */

    CYG_ADDRWORD  pc;             /* Program Counter                      */

} HAL_SavedRegisters;

//--------------------------------------------------------------------------

// Extra initialization for AM33 extended register set.

#define HAL_THREAD_INIT_CONTEXT_EXTRA(_regs_, _id_)     \

CYG_MACRO_START                                         \

    (_regs_)->e0        = (_id_)|0xeee0;                \

    (_regs_)->e1        = (_id_)|0xeee1;                \

    (_regs_)->e2        = (_id_)|0xeee2;                \

    (_regs_)->e3        = (_id_)|0xeee3;                \

    (_regs_)->e4        = (_id_)|0xeee4;                \

    (_regs_)->e5        = (_id_)|0xeee5;                \

    (_regs_)->e6        = (_id_)|0xeee6;                \

    (_regs_)->e7        = (_id_)|0xeee7;                \

    (_regs_)->mcrl      = 0;                            \

    (_regs_)->mcrh      = 0;                            \

    (_regs_)->mdrq      = 0;                            \

    (_regs_)->mcvf      = 0;                            \

CYG_MACRO_END

//--------------------------------------------------------------------------

// The following macros copy the extra AM33 registers between a

// HAL_SavedRegisters structure and a GDB register dump.

// The CYGMON version should handle the SSP and USP and MDRQ registers.

#ifdef CYGPKG_CYGMON

#define HAL_GET_GDB_EXTRA_REGISTERS( _regval_, _regs_ ) am33_get_gdb_extra_registers( _regval_, _regs_ )

extern void am33_get_gdb_extra_registers(CYG_ADDRWORD *registers, HAL_SavedRegisters *regs);

#else // CYGPKG_CYGMON

#define HAL_GET_GDB_EXTRA_REGISTERS( _regval_, _regs_ ) \

CYG_MACRO_START                                         \

    (_regval_)[15] = (_regs_)->e0;                      \

    (_regval_)[16] = (_regs_)->e1;                      \

    (_regval_)[17] = (_regs_)->e2;                      \

    (_regval_)[18] = (_regs_)->e3;                      \

    (_regval_)[19] = (_regs_)->e4;                      \

    (_regval_)[20] = (_regs_)->e5;                      \

    (_regval_)[21] = (_regs_)->e6;                      \

    (_regval_)[22] = (_regs_)->e7;                      \

                                                        \

    (_regval_)[23] = (_regs_)->sp;                      \

    (_regval_)[24] = (_regs_)->sp;                      \

    (_regval_)[25] = (_regs_)->sp;                      \

                                                        \

    (_regval_)[26] = (_regs_)->mcrh;                    \

    (_regval_)[27] = (_regs_)->mcrl;                    \

    (_regval_)[28] = (_regs_)->mcvf;                    \

CYG_MACRO_END

#endif // CYGPKG_CYGMON

#ifdef CYGPKG_CYGMON

#define HAL_SET_GDB_EXTRA_REGISTERS( _regval_, _regs_ ) am33_set_gdb_extra_registers( _regs_, _regval_ )

extern void am33_set_gdb_extra_registers(CYG_ADDRWORD *registers, HAL_SavedRegisters *regs);

#else // CYGPKG_CYGMON

#define HAL_SET_GDB_EXTRA_REGISTERS( _regs_, _regval_ ) \

CYG_MACRO_START                                         \

    (_regs_)->e0 = (_regval_)[15];                      \

    (_regs_)->e1 = (_regval_)[16];                      \

    (_regs_)->e2 = (_regval_)[17];                      \

    (_regs_)->e3 = (_regval_)[18];                      \

    (_regs_)->e4 = (_regval_)[19];                      \

    (_regs_)->e5 = (_regval_)[20];                      \

    (_regs_)->e6 = (_regval_)[21];                      \

    (_regs_)->e7 = (_regval_)[22];                      \

                                                        \

    (_regs_)->sp = (_regval_)[23];                      \

    (_regs_)->sp = (_regval_)[24];                      \

    (_regs_)->sp = (_regval_)[25];                      \

                                                        \

    (_regs_)->mcrh = (_regval_)[26];                    \

    (_regs_)->mcrl = (_regval_)[27];                    \

    (_regs_)->mcvf = (_regval_)[28];                    \

CYG_MACRO_END

#endif // CYGPKG_CYGMON

//--------------------------------------------------------------------------

#endif // CYGONCE_HAL_VAR_ARCH_H

// End of var_arch.h