| /* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace. | |
| * | |
| * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) | |
| */ | |
| #define EX_LD(x) \ | |
| 98: x; \ | |
| .section __ex_table,"a";\ | |
| .align 4; \ | |
| .word 98b, __retl_one; \ | |
| .text; \ | |
| .align 4; | |
| #define EX_LD_FP(x) \ | |
| 98: x; \ | |
| .section __ex_table,"a";\ | |
| .align 4; \ | |
| .word 98b, __retl_one_fp;\ | |
| .text; \ | |
| .align 4; | |
| #define FUNC_NAME ___copy_from_user | |
| #define LOAD(type,addr,dest) type##a [addr] %asi, dest | |
| #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS, dest | |
| #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 "U1memcpy.S" |