arch/sparc/lib/NGcopy_from_user.S

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