Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/* 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 .fixup;        \

        .align 4;               \

99:     retl;                   \

         mov    1, %o0;         \

        .section __ex_table,"a";\

        .align 4;               \

        .word 98b, 99b;         \

        .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, memcpy_user_stub;         \

         nop;                                           \

#include "U3memcpy.S"