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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.
*
* $Id$
*/
.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 ;
*/
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