submul_1.asm
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上传日期:2022-08-06
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- dnl SPARC v8 mpn_submul_1 -- Multiply a limb vector with a limb and
- dnl subtract the result from a second limb vector.
- dnl Copyright 1992, 1993, 1994, 2000 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 o0
- C s1_ptr o1
- C size o2
- C s2_limb o3
- ASM_START()
- PROLOGUE(mpn_submul_1)
- sub %g0,%o2,%o2 C negate ...
- sll %o2,2,%o2 C ... and scale size
- sub %o1,%o2,%o1 C o1 is offset s1_ptr
- sub %o0,%o2,%g1 C g1 is offset res_ptr
- mov 0,%o0 C clear cy_limb
- L(loop):
- ld [%o1+%o2],%o4
- ld [%g1+%o2],%g2
- umul %o4,%o3,%o5
- rd %y,%g3
- addcc %o5,%o0,%o5
- addx %g3,0,%o0
- subcc %g2,%o5,%g2
- addx %o0,0,%o0
- st %g2,[%g1+%o2]
- addcc %o2,4,%o2
- bne L(loop)
- nop
- retl
- nop
- EPILOGUE(mpn_submul_1)