ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 //
   5 // 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
  17     INCLUDE AsmMacroExport.inc
  18
  19 ;
  20 ;UINT32
  21 ;EFIAPI
  22 ;__aeabi_lasr (
  23 ;  IN UINT32  Dividen
  24 ;  IN UINT32  Divisor
  25 ;  );
  26 ;
  27  RVCT_ASM_EXPORT __aeabi_lasr
  28     SUBS     r3,r2,#0x20
  29     BPL      {pc} + 0x18  ; 0x1c
  30     RSB      r3,r2,#0x20
  31     LSR      r0,r0,r2
  32     ORR      r0,r0,r1,LSL r3
  33     ASR      r1,r1,r2
  34     BX       lr
  35     ASR      r0,r1,r3
  36     ASR      r1,r1,#31
  37     BX       lr
  38
  39     END
  40