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TOMOYO Linux Cross Reference
Linux/arch/sparc/lib/NG4copy_from_user.S

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
  3  *
  4  * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
  5  */
  6 
  7 #define EX_LD(x, y)             \
  8 98:     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)           \
 16 98:     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 #define FUNC_NAME               NG4copy_from_user
 28 #define LOAD(type,addr,dest)    type##a [addr] %asi, dest
 29 #define EX_RETVAL(x)            0
 30 
 31 #ifdef __KERNEL__
 32 #define PREAMBLE                                        \
 33         rd              %asi, %g1;                      \
 34         cmp             %g1, ASI_AIUS;                  \
 35         bne,pn          %icc, raw_copy_in_user;         \
 36          nop
 37 #endif
 38 
 39 #include "NG4memcpy.S"
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