/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace. * * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) */ #define EX_ST(x,y) \ 98: x; \ .section __ex_table,"a";\ .align 4; \ .word 98b, y; \ .text; \ .align 4; #define EX_ST_FP(x,y) \ 98: x; \ .section __ex_table,"a";\ .align 4; \ .word 98b, y##_fp; \ .text; \ .align 4; #define FUNC_NAME U3copy_to_user #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS #define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS #define EX_RETVAL(x) 0 /* Writing to %asi is _expensive_ so we hardcode it. * Reading %asi to check for KERNEL_DS is comparatively * cheap. */ #define PREAMBLE \ rd %asi, %g1; \ cmp %g1, ASI_AIUS; \ bne,pn %icc, ___copy_in_user; \ nop; \ #include "U3memcpy.S" |