ArmPkg/Library/CompilerIntrinsicsLib/Arm/divdi3.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 #
   5 # SPDX-License-Identifier: BSD-2-Clause-Patent
   6 #
   7 #------------------------------------------------------------------------------
   8
   9 #include <AsmMacroIoLib.h>
  10
  11 ASM_FUNC(__divdi3)
  12   @ args = 0, pretend = 0, frame = 0
  13   @ frame_needed = 1, uses_anonymous_args = 0
  14   stmfd  sp!, {r4, r5, r7, lr}
  15   mov  r4, r3, asr #31
  16   add  r7, sp, #8
  17   stmfd  sp!, {r10, r11}
  18   mov  r10, r1, asr #31
  19   sub  sp, sp, #8
  20   mov  r11, r10
  21   mov  r5, r4
  22   eor  r0, r0, r10
  23   eor  r1, r1, r10
  24   eor  r2, r2, r4
  25   eor  r3, r3, r4
  26   subs  r2, r2, r4
  27   sbc  r3, r3, r5
  28   mov  ip, #0
  29   subs  r0, r0, r10
  30   sbc  r1, r1, r11
  31   str  ip, [sp, #0]
  32   bl  ASM_PFX(__udivmoddi4)
  33   eor  r2, r10, r4
  34   eor  r3, r10, r4
  35   eor  r0, r0, r2
  36   eor  r1, r1, r3
  37   subs  r0, r0, r2
  38   sbc  r1, r1, r3
  39   sub  sp, r7, #16
  40   ldmfd  sp!, {r10, r11}
  41   ldmfd  sp!, {r4, r5, r7, pc}