ArmPkg/Library/CompilerIntrinsicsLib/Arm/ashrdi3.S

   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         .text
  16         .align 2
  17         .globl ASM_PFX(__ashrdi3)
  18   INTERWORK_FUNC(__ashrdi3)
  19
  20 ASM_PFX(__ashrdi3):
  21         cmp     r2, #31
  22         bls     L2
  23         cmp     r2, #63
  24         subls   r2, r2, #32
  25         mov     ip, r1, asr #31
  26         movls   r2, r1, asr r2
  27         movhi   r2, ip
  28         mov     r0, r2
  29         mov     r1, ip
  30         bx      lr
  31 L2:
  32         cmp     r2, #0
  33         rsbne   r3, r2, #32
  34         movne   r3, r1, asl r3
  35         movne   r1, r1, asr r2
  36         orrne   r0, r3, r0, lsr r2
  37         bx      lr