1/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace. 2 * 3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net) 4 */ 5 6#define EX_LD(x,y) \ 798: x; \ 8 .section __ex_table,"a";\ 9 .align 4; \ 10 .word 98b, y; \ 11 .text; \ 12 .align 4; 13 14#define EX_LD_FP(x,y) \ 1598: x; \ 16 .section __ex_table,"a";\ 17 .align 4; \ 18 .word 98b, y##_fp; \ 19 .text; \ 20 .align 4; 21 22#ifndef ASI_AIUS 23#define ASI_AIUS 0x11 24#endif 25 26#ifndef ASI_BLK_AIUS_4V 27#define ASI_BLK_AIUS_4V 0x17 28#endif 29 30#define FUNC_NAME NG2copy_from_user 31#define LOAD(type,addr,dest) type##a [addr] %asi, dest 32#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest 33#define EX_RETVAL(x) 0 34 35#ifdef __KERNEL__ 36#define PREAMBLE \ 37 rd %asi, %g1; \ 38 cmp %g1, ASI_AIUS; \ 39 bne,pn %icc, ___copy_in_user; \ 40 nop 41#endif 42 43#include "NG2memcpy.S" 44