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- /* U1copy_to_user.S: UltraSparc-I/II/IIi/IIe 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 FUNC_NAME ___copy_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 "U1memcpy.S"
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