submul_1.asm
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上传日期:2022-08-06
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- dnl SPARC v9 64-bit mpn_submul_1 -- Multiply a limb vector with a limb and
- dnl subtract the result from a second limb vector.
- dnl Copyright 2001, 2002, 2003 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 cycles/limb
- C UltraSPARC 1&2: 18
- C UltraSPARC 3: 23
- C INPUT PARAMETERS
- C rp i0
- C up i1
- C n i2
- C v i3
- ASM_START()
- REGISTER(%g2,#scratch)
- PROLOGUE(mpn_submul_1)
- save %sp,-176,%sp
- sllx %i2, 3, %g2
- or %g0, %i1, %o1
- add %g2, 15, %o0
- or %g0, %i2, %o2
- and %o0, -16, %o0
- sub %sp, %o0, %sp
- add %sp, 2223, %o0
- or %g0, %o0, %l0
- call mpn_mul_1
- or %g0, %i3, %o3
- or %g0, %o0, %l1 C preserve carry value from mpn_mul_1
- or %g0, %i0, %o0
- or %g0, %i0, %o1
- or %g0, %l0, %o2
- call mpn_sub_n
- or %g0, %i2, %o3
- ret
- restore %l1, %o0, %o0 C sum carry values
- EPILOGUE(mpn_submul_1)