| /* 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) \ | |
| 98: x; \ | |
| .section __ex_table,"a";\ | |
| .align 4; \ | |
| .word 98b, __retl_one; \ | |
| .text; \ | |
| .align 4; | |
| #define EX_ST_FP(x) \ | |
| 98: x; \ | |
| .section __ex_table,"a";\ | |
| .align 4; \ | |
| .word 98b, __retl_one_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" |