LXR linux/arch/sparc/lib/NGcopy_from

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* NGcopy_from_user.S: Niagara optimized copy from userspace.
   3 *
   4 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
   5 */
   6
   7#define EX_LD(x,y)              \
   898:     x;                      \
   9        .section __ex_table,"a";\
  10        .align 4;               \
  11        .word 98b, y;           \
  12        .text;                  \
  13        .align 4;
  14
  15#ifndef ASI_AIUS
  16#define ASI_AIUS        0x11
  17#endif
  18
  19#define FUNC_NAME               NGcopy_from_user
  20#define LOAD(type,addr,dest)    type##a [addr] ASI_AIUS, dest
  21#define LOAD_TWIN(addr_reg,dest0,dest1) \
  22        ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
  23#define EX_RETVAL(x)            %g0
  24
  25#ifdef __KERNEL__
  26#define PREAMBLE                                        \
  27        rd              %asi, %g1;                      \
  28        cmp             %g1, ASI_AIUS;                  \
  29        bne,pn          %icc, raw_copy_in_user;         \
  30         nop
  31#endif
  32
  33#include "NGmemcpy.S"
  34