TOMOYO Linux Cross Reference
Linux/arch/sparc/lib/NG2copy_from_user.S

   /* SPDX-License-Identifier: GPL-2.0 */
   /* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
    *
    * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
    */
   
   #define EX_LD(x,y)              \
   98:     x;                      \
           .section __ex_table,"a";\
          .align 4;               \
          .word 98b, y;           \
          .text;                  \
          .align 4;
  
  #define EX_LD_FP(x,y)           \
  98:     x;                      \
          .section __ex_table,"a";\
          .align 4;               \
          .word 98b, y##_fp;      \
          .text;                  \
          .align 4;
  
  #ifndef ASI_AIUS
  #define ASI_AIUS        0x11
  #endif
  
  #ifndef ASI_BLK_AIUS_4V
  #define ASI_BLK_AIUS_4V 0x17
  #endif
  
  #define FUNC_NAME               NG2copy_from_user
  #define LOAD(type,addr,dest)    type##a [addr] %asi, dest
  #define LOAD_BLK(addr,dest)     ldda [addr] ASI_BLK_AIUS_4V, dest
  #define EX_RETVAL(x)            0
  
  #ifdef __KERNEL__
  #define PREAMBLE                                        \
          rd              %asi, %g1;                      \
          cmp             %g1, ASI_AIUS;                  \
          bne,pn          %icc, raw_copy_in_user;         \
           nop
  #endif
  
  #include "NG2memcpy.S"

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