dnl  AMD64 mpn_addmul_1 and mpn_submul_1 optimised for Intel Nehalem.

dnl  Contributed to the GNU project by Torbjörn Granlund.

dnl  Copyright 2003-2005, 2007, 2008, 2011-2013 Free Software Foundation, Inc.

dnl  This file is part of the GNU MP Library.

dnl

dnl  The GNU MP Library is free software; you can redistribute it and/or modify

dnl  it under the terms of either:

dnl

dnl    * the GNU Lesser General Public License as published by the Free

dnl      Software Foundation; either version 3 of the License, or (at your

dnl      option) any later version.

dnl

dnl  or

dnl

dnl    * the GNU General Public License as published by the Free Software

dnl      Foundation; either version 2 of the License, or (at your option) any

dnl      later version.

dnl

dnl  or both in parallel, as here.

dnl

dnl  The GNU MP Library is distributed in the hope that it will be useful, but

dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

dnl  for more details.

dnl

dnl  You should have received copies of the GNU General Public License and the

dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,

dnl  see https://www.gnu.org/licenses/.

include(`../config.m4')

C	     cycles/limb

C AMD K8,K9

C AMD K10

C AMD bull

C AMD pile

C AMD bobcat

C AMD jaguar

C Intel P4

C Intel core

C Intel NHM	 4.55  with minor fluctuations

C Intel SBR

C Intel IBR

C Intel HWL

C Intel BWL

C Intel atom

C VIA nano

C The loop of this code is the result of running a code generation and

C optimization tool suite written by David Harvey and Torbjorn Granlund.

C N.B.: Be careful if editing, making sure the loop alignment padding does not

C become large, as we currently fall into it.

define(`rp',      `%rdi')   C rcx

define(`up',      `%rsi')   C rdx

define(`n_param', `%rdx')   C r8

define(`v0',      `%rcx')   C r9

define(`n',       `%rbx')

ifdef(`OPERATION_addmul_1',`

  define(`ADDSUB', `add')

  define(`func',   `mpn_addmul_1')

')

ifdef(`OPERATION_submul_1',`

  define(`ADDSUB', `sub')

  define(`func',   `mpn_submul_1')

')

ABI_SUPPORT(DOS64)

ABI_SUPPORT(STD64)

MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1)

ASM_START()

	TEXT

	ALIGN(32)

PROLOGUE(func)

	FUNC_ENTRY(4)

	push	%rbx

	mov	(up), %rax

	lea	-8(up,n_param,8), up

	mov	(rp), %r8

	lea	-8(rp,n_param,8), rp

	test	$1, R8(n_param)

	jnz	L(bx1)

L(bx0):	test	$2, R8(n_param)

	jnz	L(b10)

L(b00):	mov	$3, R32(n)

	sub	n_param, n

	mul	v0

	mov	$0, R32(%r11)

	mov	%r8, %r10

	ADDSUB	%rax, %r10

	mov	-8(up,n,8), %rax

	adc	%rdx, %r11

	jmp	L(lo0)

L(b10):	mov	$1, R32(n)

	sub	n_param, n

	mul	v0

	mov	%r8, %r10

	mov	$0, R32(%r11)

	ADDSUB	%rax, %r10

	mov	8(up,n,8), %rax

	adc	%rdx, %r11

	jmp	L(lo2)

L(bx1):	test	$2, R8(n_param)

	jz	L(b01)

L(b11):	mov	$2, R32(n)

	sub	n_param, n

	mul	v0

	ADDSUB	%rax, %r8

	mov	$0, R32(%r9)

	mov	(up,n,8), %rax

	adc	%rdx, %r9

	jmp	L(lo3)

L(b01):	mov	$0, R32(n)

	sub	n_param, n

	xor	%r11, %r11

	add	$4, n

	jc	L(end)

	ALIGN(32)

L(top):	mul	v0

	ADDSUB	%rax, %r8

	mov	$0, R32(%r9)

	mov	-16(up,n,8), %rax

	adc	%rdx, %r9

L(lo1):	mul	v0

	ADDSUB	%r11, %r8

	mov	$0, R32(%r11)

	mov	-16(rp,n,8), %r10

	adc	$0, %r9

	ADDSUB	%rax, %r10

	mov	-8(up,n,8), %rax

	adc	%rdx, %r11

	mov	%r8, -24(rp,n,8)

	ADDSUB	%r9, %r10

	adc	$0, %r11

L(lo0):	mov	-8(rp,n,8), %r8

	mul	v0

	ADDSUB	%rax, %r8

	mov	$0, R32(%r9)

	mov	(up,n,8), %rax

	adc	%rdx, %r9

	mov	%r10, -16(rp,n,8)

	ADDSUB	%r11, %r8

	adc	$0, %r9

L(lo3):	mul	v0

	mov	(rp,n,8), %r10

	mov	$0, R32(%r11)

	ADDSUB	%rax, %r10

	mov	8(up,n,8), %rax

	adc	%rdx, %r11

	mov	%r8, -8(rp,n,8)

	ADDSUB	%r9, %r10

	adc	$0, %r11

L(lo2):	mov	8(rp,n,8), %r8

	mov	%r10, (rp,n,8)

	add	$4, n

	jnc	L(top)

L(end):	mul	v0

	ADDSUB	%rax, %r8

	mov	$0, R32(%rax)

	adc	%rdx, %rax

	ADDSUB	%r11, %r8

	adc	$0, %rax

	mov	%r8, (rp)

	pop	%rbx

	FUNC_EXIT()

	ret

EPILOGUE()

ASM_END()

CF_PROT