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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: 2k
Category:
Algorithm
Development Platform:
Unix_Linux
- dnl PowerPC-64 mpn_submul_1 -- Multiply a limb vector with a limb and subtract
- dnl the result from a second limb vector.
- dnl Copyright 1999, 2000, 2001, 2003, 2004, 2005, 2006 Free Software
- dnl 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 POWER3/PPC630: 6-18
- C POWER4/PPC970: 10
- C POWER5: 10.5
- C INPUT PARAMETERS
- define(`rp', `r3')
- define(`up', `r4')
- define(`n', `r5')
- define(`vl', `r6')
- define(`cy', `r7')
- ASM_START()
- PROLOGUE(mpn_submul_1)
- li cy, 0 C cy_limb = 0
- PROLOGUE(mpn_submul_1c)
- mtctr n
- addic r0, r0, 0
- addi rp, rp, -8
- ALIGN(16)
- L(top):
- ld r0, 0(up)
- ld r10, 8(rp)
- mulld r9, r0, vl
- mulhdu r5, r0, vl
- adde r9, r9, cy
- addi up, up, 8
- addze cy, r5
- subf r12, r9, r10
- not r0, r10
- addc r11, r9, r0 C inverted carry from subf
- stdu r12, 8(rp)
- bdnz L(top)
- addze r3, cy
- blr
- EPILOGUE(mpn_submul_1)
- EPILOGUE(mpn_submul_1c)