mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-03 04:01:43 +08:00
63 lines
1.6 KiB
ArmAsm
63 lines
1.6 KiB
ArmAsm
|
/* AMD64 __mpn_rshift --
|
||
|
Copyright (C) 2004, 2006 Free Software Foundation, Inc.
|
||
|
This file is part of the GNU MP Library.
|
||
|
|
||
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
||
|
it under the terms of the GNU Lesser General Public License as published by
|
||
|
the Free Software Foundation; either version 2.1 of the License, or (at your
|
||
|
option) any later version.
|
||
|
|
||
|
The GNU MP Library is distributed in the hope that it will be useful, but
|
||
|
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
||
|
License for more details.
|
||
|
|
||
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
||
|
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
||
|
MA 02111-1307, USA. */
|
||
|
|
||
|
#include "sysdep.h"
|
||
|
#include "asm-syntax.h"
|
||
|
|
||
|
.text
|
||
|
ENTRY (__mpn_rshift)
|
||
|
movq (%rsi), %mm7
|
||
|
movd %ecx, %mm1
|
||
|
movl $64, %eax
|
||
|
subl %ecx, %eax
|
||
|
movd %eax, %mm0
|
||
|
movq %mm7, %mm3
|
||
|
psllq %mm0, %mm7
|
||
|
movd %mm7, %rax
|
||
|
leaq (%rsi,%rdx,8), %rsi
|
||
|
leaq (%rdi,%rdx,8), %rdi
|
||
|
negq %rdx
|
||
|
addq $2, %rdx
|
||
|
jg L(endo)
|
||
|
.p2align 2
|
||
|
L(loop):
|
||
|
movq -8(%rsi,%rdx,8), %mm6
|
||
|
movq %mm6, %mm2
|
||
|
psllq %mm0, %mm6
|
||
|
psrlq %mm1, %mm3
|
||
|
por %mm6, %mm3
|
||
|
movq %mm3, -16(%rdi,%rdx,8)
|
||
|
je L(ende)
|
||
|
movq (%rsi,%rdx,8), %mm7
|
||
|
movq %mm7, %mm3
|
||
|
psllq %mm0, %mm7
|
||
|
psrlq %mm1, %mm2
|
||
|
por %mm7, %mm2
|
||
|
movq %mm2, -8(%rdi,%rdx,8)
|
||
|
addq $2, %rdx
|
||
|
jle L(loop)
|
||
|
L(endo):
|
||
|
movq %mm3, %mm2
|
||
|
L(ende):
|
||
|
psrlq %mm1, %mm2
|
||
|
movq %mm2, -8(%rdi)
|
||
|
emms
|
||
|
ret
|
||
|
END (__mpn_rshift)
|