add_n.asm
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上传日期:2022-08-06
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- 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()