/* GENcopy_to_user.S: Generic sparc64 copy to userspace. * * Copyright (C) 2007 David S. Miller (davem@davemloft.net) */ #define EX_ST(x) \ 98: x; \ .section __ex_table,"a";\ .align 4; \ .word 98b, __retl_one; \ .text; \ .align 4; #ifndef ASI_AIUS #define ASI_AIUS 0x11 #endif #define FUNC_NAME GENcopy_to_user #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS #define EX_RETVAL(x) 0 #ifdef __KERNEL__ /* 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 #endif #include "GENmemcpy.S"