arch/frv/lib/__muldi3.S

   1 /* __muldi3.S:  64-bit multiply
   2  *
   3  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12         .text
  13         .p2align        4
  14
  15 ###############################################################################
  16 #
  17 # unsigned long long __muldi3(unsigned long long x [GR8:GR9],
  18 #                             unsigned long long y [GR10:GR11])
  19 #
  20 ###############################################################################
  21         .globl          __muldi3, __mulll, __umulll
  22         .type           __muldi3,@function
  23 __muldi3:
  24 __mulll:
  25 __umulll:
  26         umul            gr8,gr11,gr4            ; GR4:GR5 = x.MSW * y.LSW
  27         umul            gr9,gr10,gr6            ; GR6:GR7 = x.LSW * y.MSW
  28         umul.p          gr9,gr11,gr8            ; GR8:GR9 = x.LSW * y.LSW
  29         add             gr5,gr7,gr5
  30         add.p           gr8,gr5,gr8             ; GR8 += GR5 + GR7
  31         bralr
  32         .size           __muldi3, .-__muldi3