;  Core2 mpn_and_n
;  Version 1.0.4
;
;  Copyright 2008 Jason Moxham

;  Windows Conversion Copyright 2008 Brian Gladman

;  This file is part of the MPIR Library.
;  The MPIR 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 MPIR 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 MPIR Library; see the file COPYING.LIB.  If not, write
;  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;  Boston, MA 02110-1301, USA.

;  Calling interface:
;
;  mp_limb_t __gmpn_<op>_n(    <op> = and
;     mp_ptr rcx,              rcx
;     mp_srcptr src1,          rdx
;     mp_srcptr src2,           r8
;     mp_size_t  len            r9
;  )

%include "..\yasm_mac.inc"

    BITS 64

%define T3      r10
%define T4      r11

    LEAF_PROC mpn_and_n
    movsxd  r9, r9d
	mov     rax, r9
	and     rax, 3
	shr     r9, 2
	jz      .2
	
	alignb  8, nop
.1: mov     r10, [rdx]
	mov     r11, [rdx+8]
	lea     rdx, [rdx+32]
	and     r10, [r8]
	and     r11, [r8+8]
	lea     r8, [r8+32]
	mov     [rcx], r10
	mov     [rcx+8], r11
	lea     rcx, [rcx+32]
	mov     T3, [rdx-16]
	mov     T4, [rdx-8]
	and     T3, [r8-16]
	and     T4, [r8-8]
	mov     [rcx-16], T3
	sub     r9, 1       ; ***
	mov     [rcx-8], T4
	jnz     .1

.2:	cmp     rax, 0      ; **
	jz      .3
	mov     r10, [rdx]
	and     r10, [r8]
	mov     [rcx], r10
	sub     rax, 1      ; ***
	jz      .3
	mov     r10, [rdx+8]
	and     r10, [r8+8]
	mov     [rcx+8], r10
	sub     rax, 1      ; ***
	jz      .3
	mov     r10, [rdx+16]
	and     r10, [r8+16]
	mov     [rcx+16], r10
.3: ret
	
	end