; HP-PA __udiv_qrnnd division support, used from longlong.h. ; This version runs fast on pre-PA7000 CPUs. ; Copyright (C) 1993, 1994, 2000 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 Library General Public License as published by ; the Free Software Foundation; either version 2 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 Library General Public ; License for more details. ; You should have received a copy of the GNU Library General Public License ; along with the GNU MP Library; see the file COPYING.LIB. If not, write to ; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, ; MA 02111-1307, USA. ; 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. .code .export __gmpn_udiv_qrnnd __gmpn_udiv_qrnnd .proc .callinfo frame=0,no_calls .entry comb,< %r23,0,L$largedivisor sub %r0,%r23,%r1 ; clear cy as side-effect ds %r0,%r1,%r0 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r24 ds %r25,%r23,%r25 addc %r24,%r24,%r28 ds %r25,%r23,%r25 comclr,>= %r25,%r0,%r0 addl %r25,%r23,%r25 stws %r25,0(0,%r26) bv 0(%r2) addc %r28,%r28,%r28 L$largedivisor extru %r24,31,1,%r19 ; r19 = n0 & 1 bb,< %r23,31,L$odd extru %r23,30,31,%r22 ; r22 = d >> 1 shd %r25,%r24,1,%r24 ; r24 = new n0 extru %r25,30,31,%r25 ; r25 = new n1 sub %r0,%r22,%r21 ds %r0,%r21,%r0 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 comclr,>= %r25,%r0,%r0 addl %r25,%r22,%r25 sh1addl %r25,%r19,%r25 stws %r25,0(0,%r26) bv 0(%r2) addc %r24,%r24,%r28 L$odd addib,sv,n 1,%r22,L$FF.. ; r22 = (d / 2 + 1) shd %r25,%r24,1,%r24 ; r24 = new n0 extru %r25,30,31,%r25 ; r25 = new n1 sub %r0,%r22,%r21 ds %r0,%r21,%r0 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r24 ds %r25,%r22,%r25 addc %r24,%r24,%r28 comclr,>= %r25,%r0,%r0 addl %r25,%r22,%r25 sh1addl %r25,%r19,%r25 ; We have computed (n1,,n0) / (d + 1), q' = r28, r' = r25 add,nuv %r28,%r25,%r25 addl %r25,%r1,%r25 addc %r0,%r28,%r28 sub,<< %r25,%r23,%r0 addl %r25,%r1,%r25 stws %r25,0(0,%r26) bv 0(%r2) addc %r0,%r28,%r28 ; This is just a special case of the code above. ; We come here when d == 0xFFFFFFFF L$FF.. add,uv %r25,%r24,%r24 sub,<< %r24,%r23,%r0 ldo 1(%r24),%r24 stws %r24,0(0,%r26) bv 0(%r2) addc %r0,%r25,%r28 .exit .procend