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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 .fixup; \ .align 4; \ 99: retl; \ mov 1, %o0; \ .section __ex_table,"a";\ .align 4; \ .word 98b, 99b; \ .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, memcpy_user_stub; \ nop; \ #include "U1memcpy.S" |