copyi.asm
上传用户:qaz666999
上传日期:2022-08-06
资源大小:2570k
文件大小:2k
- dnl AMD64 mpn_copyi -- copy limb vector, incrementing.
- dnl Copyright 2003, 2005, 2007 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 K8,K9: 1
- C K10: 1
- C P4: 2.8
- C P6-15: 1.2
- C INPUT PARAMETERS
- C rp rdi
- C up rsi
- C n rdx
- define(`rp',`%rdi')
- define(`up',`%rsi')
- define(`n',`%rdx')
- ASM_START()
- TEXT
- ALIGN(16)
- PROLOGUE(mpn_copyi)
- leaq -8(rp), rp
- subq $4, n
- jc L(end)
- ALIGN(16)
- L(oop): movq (up), %r8
- movq 8(up), %r9
- leaq 32(rp), rp
- movq 16(up), %r10
- movq 24(up), %r11
- leaq 32(up), up
- movq %r8, -24(rp)
- movq %r9, -16(rp)
- subq $4, n
- movq %r10, -8(rp)
- movq %r11, (rp)
- jnc L(oop)
- L(end): shrl %edx C edx = lowpart(n)
- jnc 1f
- movq (up), %r8
- movq %r8, 8(rp)
- leaq 8(rp), rp
- leaq 8(up), up
- 1: shrl %edx C edx = lowpart(n)
- jnc 1f
- movq (up), %r8
- movq 8(up), %r9
- movq %r8, 8(rp)
- movq %r9, 16(rp)
- 1: ret
- EPILOGUE()