Blame view
arch/powerpc/sysdev/dcr-low.S
983 Bytes
4c75a6f44 [POWERPC] Generic... |
1 2 3 4 5 6 7 8 9 10 11 12 13 |
/* * "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> |
6d2170be4 powerpc/4xx: Exte... |
14 |
#include <asm/bug.h> |
4c75a6f44 [POWERPC] Generic... |
15 16 |
#define DCR_ACCESS_PROLOG(table) \ |
6d2170be4 powerpc/4xx: Exte... |
17 |
cmpli cr0,r3,1024; \ |
4c75a6f44 [POWERPC] Generic... |
18 19 20 21 |
rlwinm r3,r3,4,18,27; \ lis r5,table@h; \ ori r5,r5,table@l; \ add r3,r3,r5; \ |
6d2170be4 powerpc/4xx: Exte... |
22 |
bge- 1f; \ |
4c75a6f44 [POWERPC] Generic... |
23 |
mtctr r3; \ |
6d2170be4 powerpc/4xx: Exte... |
24 25 26 27 |
bctr; \ 1: trap; \ EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0; \ blr |
4c75a6f44 [POWERPC] Generic... |
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 |
_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 |