| ;! HP-PA __udiv_qrnnd division support, used from longlong.h. |
| ;! This version runs fast on pre-PA7000 CPUs. |
| |
| ;! Copyright (C) 1993-2014 Free Software Foundation, Inc. |
| |
| ;! This file is part of the GNU MP Library. |
| |
| ;! The GNU MP Library is free software; you can redistribute it and/or modify |
| ;! it under the terms of the GNU Lesser General Public License as published by |
| ;! the Free Software Foundation; either version 2.1 of the License, or (at your |
| ;! option) any later version. |
| |
| ;! The GNU MP Library is distributed in the hope that it will be useful, but |
| ;! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| ;! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| ;! License for more details. |
| |
| ;! You should have received a copy of the GNU Lesser General Public License |
| ;! along with the GNU MP Library. If not, see |
| ;! <http://www.gnu.org/licenses/>. |
| |
| |
| ;! INPUT PARAMETERS |
| ;! rem_ptr gr26 |
| ;! n1 gr25 |
| ;! n0 gr24 |
| ;! d gr23 |
| |
| ;! The code size is a bit excessive. We could merge the last two ds;addc |
| ;! sequences by simply moving the "bb,< Odd" instruction down. The only |
| ;! trouble is the FFFFFFFF code that would need some hacking. |
| |
| .text |
| .export __udiv_qrnnd |
| __udiv_qrnnd: |
| .proc |
| .callinfo frame=0,no_calls |
| .entry |
| |
| comb,< %r23,%r0,L$largedivisor |
| sub %r0,%r23,%r1 ;! clear cy as side-effect |
| ds %r0,%r1,%r0 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r23,%r25 |
| addc %r24,%r24,%r28 |
| ds %r25,%r23,%r25 |
| comclr,>= %r25,%r0,%r0 |
| addl %r25,%r23,%r25 |
| stws %r25,0(%r26) |
| bv 0(%r2) |
| addc %r28,%r28,%r28 |
| |
| L$largedivisor: |
| extru %r24,31,1,%r20 ;! r20 = n0 & 1 |
| bb,< %r23,31,L$odd |
| extru %r23,30,31,%r22 ;! r22 = d >> 1 |
| shd %r25,%r24,1,%r24 ;! r24 = new n0 |
| extru %r25,30,31,%r25 ;! r25 = new n1 |
| sub %r0,%r22,%r21 |
| ds %r0,%r21,%r0 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| comclr,>= %r25,%r0,%r0 |
| addl %r25,%r22,%r25 |
| sh1addl %r25,%r20,%r25 |
| stws %r25,0(%r26) |
| bv 0(%r2) |
| addc %r24,%r24,%r28 |
| |
| L$odd: addib,sv,n 1,%r22,L$FF.. ;! r22 = (d / 2 + 1) |
| shd %r25,%r24,1,%r24 ;! r24 = new n0 |
| extru %r25,30,31,%r25 ;! r25 = new n1 |
| sub %r0,%r22,%r21 |
| ds %r0,%r21,%r0 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r24 |
| ds %r25,%r22,%r25 |
| addc %r24,%r24,%r28 |
| comclr,>= %r25,%r0,%r0 |
| addl %r25,%r22,%r25 |
| sh1addl %r25,%r20,%r25 |
| ;! We have computed (n1,,n0) / (d + 1), q' = r28, r' = r25 |
| add,nuv %r28,%r25,%r25 |
| addl %r25,%r1,%r25 |
| addc %r0,%r28,%r28 |
| sub,<< %r25,%r23,%r0 |
| addl %r25,%r1,%r25 |
| stws %r25,0(%r26) |
| bv 0(%r2) |
| addc %r0,%r28,%r28 |
| |
| ;! This is just a special case of the code above. |
| ;! We come here when d == 0xFFFFFFFF |
| L$FF..: add,uv %r25,%r24,%r24 |
| sub,<< %r24,%r23,%r0 |
| ldo 1(%r24),%r24 |
| stws %r24,0(%r26) |
| bv 0(%r2) |
| addc %r0,%r25,%r28 |
| |
| .exit |
| .procend |
