root/arch/arm/lib/ashldi3.S

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   1 /* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005
   2    Free Software Foundation, Inc.
   3 
   4 This file is free software; you can redistribute it and/or modify it
   5 under the terms of the GNU General Public License as published by the
   6 Free Software Foundation; either version 2, or (at your option) any
   7 later version.
   8 
   9 In addition to the permissions in the GNU General Public License, the
  10 Free Software Foundation gives you unlimited permission to link the
  11 compiled version of this file into combinations with other programs,
  12 and to distribute those combinations without any restriction coming
  13 from the use of this file.  (The General Public License restrictions
  14 do apply in other respects; for example, they cover modification of
  15 the file, and distribution when not linked into a combine
  16 executable.)
  17 
  18 This file is distributed in the hope that it will be useful, but
  19 WITHOUT ANY WARRANTY; without even the implied warranty of
  20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 General Public License for more details.
  22 
  23 You should have received a copy of the GNU General Public License
  24 along with this program; see the file COPYING.  If not, write to
  25 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  26 Boston, MA 02110-1301, USA.  */
  27 
  28 
  29 #include <linux/linkage.h>
  30 #include <asm/assembler.h>
  31 
  32 #ifdef __ARMEB__
  33 #define al r1
  34 #define ah r0
  35 #else
  36 #define al r0
  37 #define ah r1
  38 #endif
  39 
  40 ENTRY(__ashldi3)
  41 ENTRY(__aeabi_llsl)
  42 
  43         subs    r3, r2, #32
  44         rsb     ip, r2, #32
  45         movmi   ah, ah, lsl r2
  46         movpl   ah, al, lsl r3
  47  ARM(   orrmi   ah, ah, al, lsr ip      )
  48  THUMB( lsrmi   r3, al, ip              )
  49  THUMB( orrmi   ah, ah, r3              )
  50         mov     al, al, lsl r2
  51         ret     lr
  52 
  53 ENDPROC(__ashldi3)
  54 ENDPROC(__aeabi_llsl)

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