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- /* SPDX-License-Identifier: GPL-2.0 */
- /* 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,y) \
- 98: x; \
- .section __ex_table,"a";\
- .align 4; \
- .word 98b, y; \
- .text; \
- .align 4;
- #define EX_LD_FP(x,y) \
- 98: x; \
- .section __ex_table,"a";\
- .align 4; \
- .word 98b, y; \
- .text; \
- .align 4;
- #define FUNC_NAME raw_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, raw_copy_in_user; \
- nop; \
- #include "U1memcpy.S"
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