You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
858 B
40 lines
858 B
20 years ago
|
/*
|
||
|
|
* "Indirect" DCR access
|
||
|
|
*
|
||
|
|
* Copyright (c) 2004 Eugene Surovegin <ebs@ebshome.net>
|
||
|
|
*
|
||
|
|
* This program 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 of the License, or (at your
|
||
|
|
* option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm/ppc_asm.h>
|
||
|
|
#include <asm/processor.h>
|
||
|
|
|
||
|
|
#define DCR_ACCESS_PROLOG(table) \
|
||
|
|
rlwinm r3,r3,4,18,27; \
|
||
|
|
lis r5,table@h; \
|
||
|
|
ori r5,r5,table@l; \
|
||
|
|
add r3,r3,r5; \
|
||
|
|
mtctr r3; \
|
||
|
|
bctr
|
||
|
|
|
||
|
|
_GLOBAL(__mfdcr)
|
||
|
|
DCR_ACCESS_PROLOG(__mfdcr_table)
|
||
|
|
|
||
|
|
_GLOBAL(__mtdcr)
|
||
|
|
DCR_ACCESS_PROLOG(__mtdcr_table)
|
||
|
|
|
||
|
|
__mfdcr_table:
|
||
|
|
mfdcr r3,0; blr
|
||
|
|
__mtdcr_table:
|
||
|
|
mtdcr 0,r4; blr
|
||
|
|
|
||
|
|
dcr = 1
|
||
|
|
.rept 1023
|
||
|
|
mfdcr r3,dcr; blr
|
||
|
|
mtdcr dcr,r4; blr
|
||
|
|
dcr = dcr + 1
|
||
|
|
.endr
|