2012-11-25 17:13:44 -05:00
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; PROLOGUE(and_n)
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; Version 1.0.4
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;
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; Copyright 2008 Jason Moxham
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;
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; Windows Conversion Copyright 2008 Brian Gladman
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; This file is part of the MPIR Library.
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; The MPIR Library is free software; you can redistribute it and/or modify
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; it under the terms of the GNU Lesser General Public License as published
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; by the Free Software Foundation; either version 2.1 of the License, or (at
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; your option) any later version.
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; The MPIR Library is distributed in the hope that it will be useful, but
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; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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; License for more details.
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; You should have received a copy of the GNU Lesser General Public License
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; along with the MPIR Library; see the file COPYING.LIB. If not, write
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; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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; Boston, MA 02110-1301, USA.
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;
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; void mpn_and_n(mp_ptr, mp_srcptr, mp_srcptr, mp_size_t)
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; rdi rsi rdx rcx
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; rcx rdx r8 r9
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%include "yasm_mac.inc"
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CPU Core2
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BITS 64
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%define T3 r10
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%define T4 r11
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LEAF_PROC mpn_and_n
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mov rax, r9
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and rax, 3
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shr r9, 2
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jz .2
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xalign 8
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.1: mov r10, [rdx]
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mov r11, [rdx+8]
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lea rdx, [rdx+32]
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and r10, [r8]
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and r11, [r8+8]
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lea r8, [r8+32]
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mov [rcx], r10
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mov [rcx+8], r11
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lea rcx, [rcx+32]
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mov T3, [rdx-16]
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mov T4, [rdx-8]
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and T3, [r8-16]
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and T4, [r8-8]
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mov [rcx-16], T3
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sub r9, 1 ; ***
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mov [rcx-8], T4
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jnz .1
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.2: cmp rax, 0 ; **
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jz .3
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mov r10, [rdx]
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and r10, [r8]
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mov [rcx], r10
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sub rax, 1 ; ***
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jz .3
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mov r10, [rdx+8]
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and r10, [r8+8]
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mov [rcx+8], r10
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sub rax, 1 ; ***
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jz .3
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mov r10, [rdx+16]
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and r10, [r8+16]
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mov [rcx+16], r10
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.3: ret
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end
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