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submul_1.asm
Package: gmp-5.0.1.tar.gz [view]
Upload User: qaz666999
Upload Date: 2022-08-06
Package Size: 2570k
Code Size: 3k
Category:
Algorithm
Development Platform:
Unix_Linux
- dnl SPARC mpn_submul_1 -- Multiply a limb vector with a limb and subtract
- dnl 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)
- C Make S1_PTR and RES_PTR point at the end of their blocks
- C and put (- 4 x SIZE) in index/loop counter.
- sll %o2,2,%o2
- add %o0,%o2,%o4 C RES_PTR in o4 since o0 is retval
- add %o1,%o2,%o1
- sub %g0,%o2,%o2
- cmp %o3,0xfff
- bgu L(large)
- nop
- ld [%o1+%o2],%o5
- mov 0,%o0
- b L(0)
- add %o4,-4,%o4
- L(loop0):
- subcc %o5,%g1,%g1
- ld [%o1+%o2],%o5
- addx %o0,%g0,%o0
- st %g1,[%o4+%o2]
- L(0): wr %g0,%o3,%y
- sra %o5,31,%g2
- and %o3,%g2,%g2
- andcc %g1,0,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,%o5,%g1
- mulscc %g1,0,%g1
- sra %g1,20,%g4
- sll %g1,12,%g1
- rd %y,%g3
- srl %g3,20,%g3
- or %g1,%g3,%g1
- addcc %g1,%o0,%g1
- addx %g2,%g4,%o0 C add sign-compensation and cy to hi limb
- addcc %o2,4,%o2 C loop counter
- bne L(loop0)
- ld [%o4+%o2],%o5
- subcc %o5,%g1,%g1
- addx %o0,%g0,%o0
- retl
- st %g1,[%o4+%o2]
- L(large):
- ld [%o1+%o2],%o5
- mov 0,%o0
- sra %o3,31,%g4 C g4 = mask of ones iff S2_LIMB < 0
- b L(1)
- add %o4,-4,%o4
- L(loop):
- subcc %o5,%g3,%g3
- ld [%o1+%o2],%o5
- addx %o0,%g0,%o0
- st %g3,[%o4+%o2]
- L(1): wr %g0,%o5,%y
- and %o5,%g4,%g2
- andcc %g0,%g0,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%o3,%g1
- mulscc %g1,%g0,%g1
- rd %y,%g3
- addcc %g3,%o0,%g3
- addx %g2,%g1,%o0
- addcc %o2,4,%o2
- bne L(loop)
- ld [%o4+%o2],%o5
- subcc %o5,%g3,%g3
- addx %o0,%g0,%o0
- retl
- st %g3,[%o4+%o2]
- EPILOGUE(mpn_submul_1)