ArmPkg/Library/CompilerIntrinsicsLib/Arm/muldi3.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(__muldi3)
  12   stmfd  sp!, {r4, r5, r6, r7, lr}
  13   add  r7, sp, #12
  14   stmfd  sp!, {r8, r10, r11}
  15   ldr  r11, L4
  16   mov  r4, r0, lsr #16
  17   and  r8, r0, r11
  18   and  ip, r2, r11
  19   mul  lr, ip, r8
  20   mul  ip, r4, ip
  21   sub  sp, sp, #8
  22   add  r10, ip, lr, lsr #16
  23   and  ip, r10, r11
  24   and  lr, lr, r11
  25   mov  r6, r2, lsr #16
  26   str  r4, [sp, #4]
  27   add  r4, lr, ip, asl #16
  28   mul  ip, r8, r6
  29   mov  r5, r10, lsr #16
  30   add  r10, ip, r4, lsr #16
  31   and  ip, r10, r11
  32   and  lr, r4, r11
  33   add  r4, lr, ip, asl #16
  34   mul  r0, r3, r0
  35   add  ip, r5, r10, lsr #16
  36   ldr  r5, [sp, #4]
  37   mla  r0, r2, r1, r0
  38   mla  r5, r6, r5, ip
  39   mov  r10, r4
  40   add  r11, r0, r5
  41   mov  r1, r11
  42   mov  r0, r4
  43   sub  sp, r7, #24
  44   ldmfd  sp!, {r8, r10, r11}
  45   ldmfd  sp!, {r4, r5, r6, r7, pc}
  46   .p2align 2
  47 L5:
  48   .align 2
  49 L4:
  50   .long  65535