LXR linux/arch/sparc/lib/NG2copy_from

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
   3 *
   4 * Copyright (C) 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#define EX_LD_FP(x,y)           \
  1698:     x;                      \
  17        .section __ex_table,"a";\
  18        .align 4;               \
  19        .word 98b, y##_fp;      \
  20        .text;                  \
  21        .align 4;
  22
  23#ifndef ASI_AIUS
  24#define ASI_AIUS        0x11
  25#endif
  26
  27#ifndef ASI_BLK_AIUS_4V
  28#define ASI_BLK_AIUS_4V 0x17
  29#endif
  30
  31#define FUNC_NAME               NG2copy_from_user
  32#define LOAD(type,addr,dest)    type##a [addr] %asi, dest
  33#define LOAD_BLK(addr,dest)     ldda [addr] ASI_BLK_AIUS_4V, dest
  34#define EX_RETVAL(x)            0
  35
  36#ifdef __KERNEL__
  37#define PREAMBLE                                        \
  38        rd              %asi, %g1;                      \
  39        cmp             %g1, ASI_AIUS;                  \
  40        bne,pn          %icc, raw_copy_in_user;         \
  41         nop
  42#endif
  43
  44#include "NG2memcpy.S"
  45