ArmPkg/Library/CompilerIntrinsicsLib/Arm/divsi3.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 #include <AsmMacroIoLib.h>
  16
  17 ASM_FUNC(__divsi3)
  18   eor  r3, r0, r0, asr #31
  19   eor  r2, r1, r1, asr #31
  20   stmfd  sp!, {r4, r5, r7, lr}
  21   mov  r5, r0, asr #31
  22   add  r7, sp, #8
  23   mov  r4, r1, asr #31
  24   sub  r0, r3, r0, asr #31
  25   sub  r1, r2, r1, asr #31
  26   bl  ASM_PFX(__udivsi3)
  27   eor  r1, r5, r4
  28   eor  r0, r0, r1
  29   rsb  r0, r1, r0
  30   ldmfd  sp!, {r4, r5, r7, pc}