;  AMD64 mpn_addlsh1_n
;  Version 1.0.3
;
;  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:
;
;  rcx[r9] = rdx[r9] + 2 * r8[r9]
;
;  void __gmpn_addlsh1_n(
;     mp_ptr rp,          rcx
;     mp_srcptr xp,       rdx
;     mp_srcptr yp,        r8
;     mp_size_t  n,        r9
;  )
;
; This is an SEH frame function

%include "..\yasm_mac.inc"

%define reg_save_list rbx, rsi, rdi

    BITS 64

    FRAME_PROC mpn_addlsh1_n, 0, reg_save_list
    movsxd  r9, r9d
    
	lea     rdx, [rdx+r9*8]
	lea     r8, [r8+r9*8]
	lea     rcx, [rcx+r9*8]
	neg     r9
	xor     rsi, rsi
	xor     rax, rax
	test    r9, 3
	jz      .2

.1: mov     rdi, [r8+r9*8]
	add     rsi, 1
	adc     rdi, rdi
	sbb     rsi, rsi
	add     rax, 1
	adc     rdi, [rdx+r9*8]
	sbb     rax, rax
	mov     [rcx+r9*8], rdi
	inc     r9
	test    r9, 3
	jnz     .1

.2:	cmp     r9, 0
	jz      .4

	alignb  16, nop
.3:	mov     rdi, [r8+r9*8]
	mov     rbx, [r8+r9*8+8]
	mov     r10, [r8+r9*8+16]
	mov     r11, [r8+r9*8+24]
	add     rsi, 1
	adc     rdi, rdi
	adc     rbx, rbx
	adc     r10, r10
	adc     r11, r11
	sbb     rsi, rsi
	add     rax, 1
	adc     rdi, [rdx+r9*8]
	adc     rbx, [rdx+r9*8+8]
	adc     r10, [rdx+r9*8+16]
	adc     r11, [rdx+r9*8+24]
	sbb     rax, rax
	mov     [rcx+r9*8], rdi
	mov     [rcx+r9*8+8], rbx
	mov     [rcx+r9*8+16], r10
	mov     [rcx+r9*8+24], r11
	add     r9, 4
	jnz     .3

.4: add     rax, rsi
	neg     rax
    END_PROC reg_save_list
    	
	end