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copyi.asm revision 1.1.1.3 
      1 dnl  AMD64 mpn_copyi -- copy limb vector, incrementing.
      2 
      3 dnl  Copyright 2003, 2005, 2007, 2011, 2012 Free Software Foundation, Inc.
      4 
      5 dnl  This file is part of the GNU MP Library.
      6 dnl
      7 dnl  The GNU MP Library is free software; you can redistribute it and/or modify
      8 dnl  it under the terms of either:
      9 dnl
     10 dnl    * the GNU Lesser General Public License as published by the Free
     11 dnl      Software Foundation; either version 3 of the License, or (at your
     12 dnl      option) any later version.
     13 dnl
     14 dnl  or
     15 dnl
     16 dnl    * the GNU General Public License as published by the Free Software
     17 dnl      Foundation; either version 2 of the License, or (at your option) any
     18 dnl      later version.
     19 dnl
     20 dnl  or both in parallel, as here.
     21 dnl
     22 dnl  The GNU MP Library is distributed in the hope that it will be useful, but
     23 dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     24 dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     25 dnl  for more details.
     26 dnl
     27 dnl  You should have received copies of the GNU General Public License and the
     28 dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
     29 dnl  see https://www.gnu.org/licenses/.
     30 
     31 include(`../config.m4')
     32 
     33 C	     cycles/limb
     34 C AMD K8,K9	 1
     35 C AMD K10	 1
     36 C AMD bd1	 1.36
     37 C AMD bobcat	 1.71
     38 C Intel P4	 2-3
     39 C Intel core2	 1
     40 C Intel NHM	 1
     41 C Intel SBR	 1
     42 C Intel atom	 2
     43 C VIA nano	 2
     44 
     45 
     46 IFSTD(`define(`rp',`%rdi')')
     47 IFSTD(`define(`up',`%rsi')')
     48 IFSTD(`define(`n', `%rdx')')
     49 
     50 IFDOS(`define(`rp',`%rcx')')
     51 IFDOS(`define(`up',`%rdx')')
     52 IFDOS(`define(`n', `%r8')')
     53 
     54 ABI_SUPPORT(DOS64)
     55 ABI_SUPPORT(STD64)
     56 
     57 ASM_START()
     58 	TEXT
     59 	ALIGN(64)
     60 	.byte	0,0,0,0,0,0
     61 PROLOGUE(mpn_copyi)
     62 	lea	-8(rp), rp
     63 	sub	$4, n
     64 	jc	L(end)
     65 
     66 L(top):	mov	(up), %rax
     67 	mov	8(up), %r9
     68 	lea	32(rp), rp
     69 	mov	16(up), %r10
     70 	mov	24(up), %r11
     71 	lea	32(up), up
     72 	mov	%rax, -24(rp)
     73 	mov	%r9, -16(rp)
     74 	sub	$4, n
     75 	mov	%r10, -8(rp)
     76 	mov	%r11, (rp)
     77 	jnc	L(top)
     78 
     79 L(end):	shr	R32(n)
     80 	jnc	1f
     81 	mov	(up), %rax
     82 	mov	%rax, 8(rp)
     83 	lea	8(rp), rp
     84 	lea	8(up), up
     85 1:	shr	R32(n)
     86 	jnc	1f
     87 	mov	(up), %rax
     88 	mov	8(up), %r9
     89 	mov	%rax, 8(rp)
     90 	mov	%r9, 16(rp)
     91 1:	ret
     92 EPILOGUE()
     93