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/* macros.inc

 *

 * This file assists the board independent startup code

 * by initializing the chip-select channels to

 * reflect the proper memory configuration.

 *

 * NOTE: No stack has been established when this routine

 *       is invoked.  It returns to start.s through ldsegs

 *

 *  Submitted by:

 *

 *    Erik Ivanenko

 *    University of Toronto

 *    erik.ivanenko@utoronto.ca

 *

 *  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.

 *

 *  $Id: macros.inc,v 1.2 2001-09-27 11:59:46 chris Exp $

 */

.set GDT_CODE_PTR       , 0x10

.set GDT_DATA_PTR       , 0x18

.set BOARD_SELECT  , 0x301

.set BOARD_DATA    , 0x302

.set BOARD_LATCH   , 0x303

#define SetExRegByte(_register,_value) \

        movb       $ ## _value, al; \

        movw      $ ## _register, dx; \

        outb       al, dx

#define SetExRegWord(_register,_value) \

        movw      $ ## _value, ax; \

        movw      $ ## _register, dx ; \

        outw      ax, dx

#define DESC2(lim_0_15, bas_0_15, bas_16_23, access, gran, bas_24_31) \

 .word lim_0_15 ; \

 .word bas_0_15 ; \

 .byte bas_16_23 ; \

 .byte access ; \

 .byte gran ; \

 .byte bas_24_31

#define DESC3( _base, _limit) \

.word _limit ; \

.long _base

/* THE GET_ACCESS IS CHANGED FROM 8E TO 9E */

#define INTERRUPT_GATE( _vector ) \

        .word   _vector ; \

        .word   GDT_CODE_PTR ; \

        .byte   0x0 ; \

        .byte   0x8E ; \

        .word   0x0

#define rLOAD_INDEX( _selector, _segment_register) \

        movl     _selector , _segment_register ; \

        addb    al, ( eax )

#define rLOAD_SEGMENT( _reg, _segment_register) \

        mov     _reg , _segment_register ; \

/* #define rLOAD_SEGMENT( _reg, _segment_register) \

        .code16 ; \

        mov     _reg , _segment_register ; \

        .code32

*/

#define pLOAD_SEGMENT( _selector, _segment_register) \

        movl     $ ##  _selector , eax ; .code16 ; \

        mov      ax, _segment_register ; .code32

/* #define MOVE_WORD( _immed32, _reg ) \

        data16 ; \

        movl    _immed32, _reg

*/

#define MOVE_WORD( _immed32, _reg ) \

        movw    _immed32, _reg

/* #define MOVE_IMMED_WORD( _immed32, _reg ) \

        data16 ; \

        mov    $ ## _immed32, _reg

#define CS_OFF( _cs_symbol, _reg ) \

        data16 ; \

        mov     _cs_symbol, _reg ; \

        data16 ;\

        andl    $0x000ffff, _reg

#define _16_NOPS \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ; \

        nop ;

*/