ArmPkg/Library/CompilerIntrinsicsLib/Arm/llsl.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2013, ARM. All rights reserved.<BR>
   4 #
   5 # SPDX-License-Identifier: BSD-2-Clause-Patent
   6 #
   7 #------------------------------------------------------------------------------
   8
   9 #include <AsmMacroIoLib.h>
  10
  11 #
  12 #VOID
  13 #EFIAPI
  14 #__aeabi_llsl (
  15 # IN  VOID    *Destination,
  16 # IN  VOID    *Source,
  17 # IN  UINT32  Size
  18 # );
  19 #
  20 ASM_FUNC(__aeabi_llsl)
  21     subs     r3,r2,#0x20
  22     bpl      1f
  23     rsb      r3,r2,#0x20
  24     lsl      r1,r1,r2
  25     orr      r1,r1,r0,lsr r3
  26     lsl      r0,r0,r2
  27     bx       lr
  28 1:
  29     lsl      r1,r0,r3
  30     mov      r0,#0
  31     bx       lr