ArmPkg/Library/CompilerIntrinsicsLib/Arm/llsl.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2013, ARM. 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 #include <AsmMacroIoLib.h>
  16
  17 #
  18 #VOID
  19 #EFIAPI
  20 #__aeabi_llsl (
  21 # IN  VOID    *Destination,
  22 # IN  VOID    *Source,
  23 # IN  UINT32  Size
  24 # );
  25 #
  26 ASM_FUNC(__aeabi_llsl)
  27     subs     r3,r2,#0x20
  28     bpl      1f
  29     rsb      r3,r2,#0x20
  30     lsl      r1,r1,r2
  31     orr      r1,r1,r0,lsr r3
  32     lsl      r0,r0,r2
  33     bx       lr
  34 1:
  35     lsl      r1,r0,r3
  36     mov      r0,#0
  37     bx       lr