arch/c6x/lib/memcpy_64plus.S

   1 ;  Port on Texas Instruments TMS320C6x architecture
   2 ;
   3 ;  Copyright (C) 2006, 2009, 2010 Texas Instruments Incorporated
   4 ;  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
   5 ;
   6 ;  This program is free software; you can redistribute it and/or modify
   7 ;  it under the terms of the GNU General Public License version 2 as
   8 ;  published by the Free Software Foundation.
   9 ;
  10
  11 #include <linux/linkage.h>
  12
  13         .text
  14
  15 ENTRY(memcpy)
  16         AND     .L1     0x1,A6,A0
  17  ||     AND     .S1     0x2,A6,A1
  18  ||     AND     .L2X    0x4,A6,B0
  19  ||     MV      .D1     A4,A3
  20  ||     MVC     .S2     ILC,B2
  21
  22    [A0] LDB     .D2T1   *B4++,A5
  23    [A1] LDB     .D2T1   *B4++,A7
  24    [A1] LDB     .D2T1   *B4++,A8
  25    [B0] LDNW    .D2T1   *B4++,A9
  26  ||     SHRU    .S2X    A6,0x3,B1
  27   [!B1] BNOP    .S2     B3,1
  28
  29    [A0] STB     .D1T1   A5,*A3++
  30  ||[B1] MVC     .S2     B1,ILC
  31    [A1] STB     .D1T1   A7,*A3++
  32    [A1] STB     .D1T1   A8,*A3++
  33    [B0] STNW    .D1T1   A9,*A3++        ; return when len < 8
  34
  35         SPLOOP  2
  36
  37         LDNDW   .D2T1   *B4++,A9:A8
  38         NOP     3
  39
  40         NOP
  41         SPKERNEL        0,0
  42  ||     STNDW   .D1T1   A9:A8,*A3++
  43
  44         BNOP    .S2     B3,4
  45         MVC     .S2     B2,ILC
  46 ENDPROC(memcpy)