dnl  AMD64 mpn_mul_1 optimised for AMD bobcat.

dnl  Copyright 2003-2005, 2007, 2008, 2011, 2012 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	 4.5

C AMD K10	 4.5

C AMD bd1	 4.62

C AMD bobcat	 5

C Intel P4	14

C Intel core2	 4.5

C Intel NHM	 4.23

C Intel SBR	 3.0

C Intel atom	21

C VIA nano	 4.94

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

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

ABI_SUPPORT(DOS64)

ABI_SUPPORT(STD64)

C Standard parameters

define(`rp',              `%rdi')

define(`up',              `%rsi')

define(`n_param',         `%rdx')

define(`v0',              `%rcx')

define(`cy',              `%r8')

C Standard allocations

define(`n',               `%rbx')

define(`w0',              `%r8')

define(`w1',              `%r9')

define(`w2',              `%r10')

define(`w3',              `%r11')

C DOS64 parameters

IFDOS(` define(`rp',      `%rcx')    ') dnl

IFDOS(` define(`up',      `%rsi')    ') dnl

IFDOS(` define(`n_param', `%r8')     ') dnl

IFDOS(` define(`v0',      `%r9')     ') dnl

IFDOS(` define(`cy',      `56(%rsp)')') dnl

C DOS64 allocations

IFDOS(` define(`n',       `%rbx')    ') dnl

IFDOS(` define(`w0',      `%r8')     ') dnl

IFDOS(` define(`w1',      `%rdi')    ') dnl

IFDOS(` define(`w2',      `%r10')    ') dnl

IFDOS(` define(`w3',      `%r11')    ') dnl

ASM_START()

	TEXT

	ALIGN(16)

PROLOGUE(mpn_mul_1c)

IFDOS(`	push	%rsi		')

IFDOS(`	push	%rdi		')

IFDOS(`	mov	%rdx, %rsi	')

	mov	cy, w2

	jmp	L(com)

EPILOGUE()

PROLOGUE(mpn_mul_1)

IFDOS(`	push	%rsi		')

IFDOS(`	push	%rdi		')

IFDOS(`	mov	%rdx, %rsi	')

	xor	w2, w2

L(com):	push	%rbx

	mov	(up), %rax

	lea	-16(rp,n_param,8), rp

	lea	-16(up,n_param,8), up

	mov	n_param, n

	and	$3, R32(n_param)

	jz	L(b0)

	cmp	$2, R32(n_param)

	ja	L(b3)

	jz	L(b2)

L(b1):	mul	v0

	cmp	$1, n

	jz	L(n1)

	neg	n

	add	$3, n

	add	%rax, w2

	mov	%rdx, w3

	jmp	L(L1)

L(n1):	add	%rax, w2

	mov	%rdx, %rax

	mov	w2, 8(rp)

	adc	$0, %rax

	pop	%rbx

IFDOS(`	pop	%rdi		')

IFDOS(`	pop	%rsi		')

	ret

L(b3):	mul	v0

	neg	n

	inc	n

	add	%rax, w2

	mov	%rdx, w3

	jmp	L(L3)

L(b0):	mul	v0

	mov	%rax, w0

	mov	%rdx, w1

	neg	n

	add	$2, n

	add	w2, w0

	jmp	L(L0)

L(b2):	mul	v0

	mov	%rax, w0

	mov	%rdx, w1

	neg	n

	add	w2, w0

	jmp	L(L2)

	ALIGN(16)

L(top):	mov	w0, -16(rp,n,8)

	add	w1, w2

L(L1):	adc	$0, w3

	mov	0(up,n,8), %rax

	mul	v0

	mov	%rax, w0

	mov	%rdx, w1

	mov	w2, -8(rp,n,8)

	add	w3, w0

L(L0):	adc	$0, w1

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

	mul	v0

	mov	%rax, w2

	mov	%rdx, w3

	mov	w0, 0(rp,n,8)

	add	w1, w2

L(L3):	adc	$0, w3

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

	mul	v0

	mov	%rax, w0

	mov	%rdx, w1

	mov	w2, 8(rp,n,8)

	add	w3, w0

L(L2):	adc	$0, w1

	mov	24(up,n,8), %rax

	mul	v0

	mov	%rax, w2

	mov	%rdx, w3

	add	$4, n

	js	L(top)

L(end):	mov	w0, (rp)

	add	w1, w2

	adc	$0, w3

	mov	w2, 8(rp)

	mov	w3, %rax

	pop	%rbx

IFDOS(`	pop	%rdi		')

IFDOS(`	pop	%rsi		')

	ret

EPILOGUE()

CF_PROT