/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace. | |
* | |
* Copyright (C) 2007 David S. Miller (davem@davemloft.net) | |
*/ | |
#define EX_LD(x) \ | |
98: x; \ | |
.section .fixup; \ | |
.align 4; \ | |
99: wr %g0, ASI_AIUS, %asi;\ | |
retl; \ | |
mov 1, %o0; \ | |
.section __ex_table,"a";\ | |
.align 4; \ | |
.word 98b, 99b; \ | |
.text; \ | |
.align 4; | |
#ifndef ASI_AIUS | |
#define ASI_AIUS 0x11 | |
#endif | |
#ifndef ASI_BLK_AIUS_4V | |
#define ASI_BLK_AIUS_4V 0x17 | |
#endif | |
#define FUNC_NAME NG2copy_from_user | |
#define LOAD(type,addr,dest) type##a [addr] %asi, dest | |
#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest | |
#define EX_RETVAL(x) 0 | |
#ifdef __KERNEL__ | |
#define PREAMBLE \ | |
rd %asi, %g1; \ | |
cmp %g1, ASI_AIUS; \ | |
bne,pn %icc, memcpy_user_stub; \ | |
nop | |
#endif | |
#include "NG2memcpy.S" |