ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008-2009 Apple Inc. All rights reserved.
   4 //
   5 // All rights reserved. This program and the accompanying materials
   6 // are licensed and made available under the terms and conditions of the BSD License
   7 // which accompanies this distribution.  The full text of the license may be found at
   8 // http://opensource.org/licenses/bsd-license.php
   9 //
  10 // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 //
  13 //------------------------------------------------------------------------------
  14
  15
  16     EXPORT  __aeabi_lasr
  17
  18     AREA    Math, CODE, READONLY
  19
  20 ;
  21 ;UINT32
  22 ;EFIAPI
  23 ;__aeabi_lasr (
  24 ;  IN UINT32  Dividen
  25 ;  IN UINT32  Divisor
  26 ;  );
  27 ;
  28 __aeabi_lasr
  29     SUBS     r3,r2,#0x20
  30     BPL      {pc} + 0x18  ; 0x1c
  31     RSB      r3,r2,#0x20
  32     LSR      r0,r0,r2
  33     ORR      r0,r0,r1,LSL r3
  34     ASR      r1,r1,r2
  35     BX       lr
  36     ASR      r0,r1,r3
  37     ASR      r1,r1,#31
  38     BX       lr
  39
  40     END
  41