| dnl HP-PA mpn_add_n -- Add two limb vectors of the same length > 0 and store |
| dnl sum in a third limb vector. |
| |
| dnl Copyright 1992, 1994, 2000, 2001, 2002 Free Software Foundation, Inc. |
| |
| dnl This file is part of the GNU MP Library. |
| |
| dnl The GNU MP Library is free software; you can redistribute it and/or modify |
| dnl it under the terms of the GNU Lesser General Public License as published |
| dnl by the Free Software Foundation; either version 3 of the License, or (at |
| dnl your option) any later version. |
| |
| dnl The GNU MP Library is distributed in the hope that it will be useful, but |
| dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| dnl License for more details. |
| |
| dnl You should have received a copy of the GNU Lesser General Public License |
| dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. |
| |
| include(`../config.m4') |
| |
| C INPUT PARAMETERS |
| C res_ptr gr26 |
| C s1_ptr gr25 |
| C s2_ptr gr24 |
| C size gr23 |
| |
| C One might want to unroll this as for other processors, but it turns out that |
| C the data cache contention after a store makes such unrolling useless. We |
| C can't come under 5 cycles/limb anyway. |
| |
| ASM_START() |
| PROLOGUE(mpn_add_n) |
| ldws,ma 4(0,%r25),%r20 |
| ldws,ma 4(0,%r24),%r19 |
| |
| addib,= -1,%r23,L(end) C check for (SIZE == 1) |
| add %r20,%r19,%r28 C add first limbs ignoring cy |
| |
| LDEF(loop) |
| ldws,ma 4(0,%r25),%r20 |
| ldws,ma 4(0,%r24),%r19 |
| stws,ma %r28,4(0,%r26) |
| addib,<> -1,%r23,L(loop) |
| addc %r20,%r19,%r28 |
| |
| LDEF(end) |
| stws %r28,0(0,%r26) |
| bv 0(%r2) |
| addc %r0,%r0,%r28 |
| EPILOGUE() |
