linux/arch/arm/lib/lshrdi3.S
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   1/* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005
   2   Free Software Foundation, Inc.
   3
   4This file is free software; you can redistribute it and/or modify it
   5under the terms of the GNU General Public License as published by the
   6Free Software Foundation; either version 2, or (at your option) any
   7later version.
   8
   9In addition to the permissions in the GNU General Public License, the
  10Free Software Foundation gives you unlimited permission to link the
  11compiled version of this file into combinations with other programs,
  12and to distribute those combinations without any restriction coming
  13from the use of this file.  (The General Public License restrictions
  14do apply in other respects; for example, they cover modification of
  15the file, and distribution when not linked into a combine
  16executable.)
  17
  18This file is distributed in the hope that it will be useful, but
  19WITHOUT ANY WARRANTY; without even the implied warranty of
  20MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21General Public License for more details.
  22
  23You should have received a copy of the GNU General Public License
  24along with this program; see the file COPYING.  If not, write to
  25the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  26Boston, 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
  40ENTRY(__lshrdi3)
  41ENTRY(__aeabi_llsr)
  42
  43        subs    r3, r2, #32
  44        rsb     ip, r2, #32
  45        movmi   al, al, lsr r2
  46        movpl   al, ah, lsr r3
  47 ARM(   orrmi   al, al, ah, lsl ip      )
  48 THUMB( lslmi   r3, ah, ip              )
  49 THUMB( orrmi   al, al, r3              )
  50        mov     ah, ah, lsr r2
  51        ret     lr
  52
  53ENDPROC(__lshrdi3)
  54ENDPROC(__aeabi_llsr)
  55