/*********************************************************************/

/* Copyright 2009, 2010 The University of Texas at Austin.           */

/* All rights reserved.                                              */

/*                                                                   */

/* Redistribution and use in source and binary forms, with or        */

/* without modification, are permitted provided that the following   */

/* conditions are met:                                               */

/*                                                                   */

/*   1. Redistributions of source code must retain the above         */

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer.                                                  */

/*                                                                   */

/*   2. Redistributions in binary form must reproduce the above      */

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer in the documentation and/or other materials       */

/*      provided with the distribution.                              */

/*                                                                   */

/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */

/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */

/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */

/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */

/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */

/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */

/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */

/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */

/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */

/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */

/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */

/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */

/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */

/*    POSSIBILITY OF SUCH DAMAGE.                                    */

/*                                                                   */

/* The views and conclusions contained in the software and           */

/* documentation are those of the authors and should not be          */

/* interpreted as representing official policies, either expressed   */

/* or implied, of The University of Texas at Austin.                 */

/*********************************************************************/

#define ASSEMBLER

#include "common.h"

#define M	ARG1

#define N	ARG2

#define K	ARG3

#define A	ARG4

#define B	ARG5

#define C	ARG6

#define LDC	%r10

#define I	%r12

#define J	%r13

#define AO	%r14

#define BO	%r15

#define	CO	%rbp

#define OFFSET	48 + STACKSIZE(%rsp)

#define STACKSIZE 64

#define KK	%r11

#define AORIG	 48(%rsp)

#ifdef OPTERON

#define PREFETCH	prefetch

#define PREFETCHW	prefetchw

#else

#define PREFETCH	prefetcht0

#define PREFETCHW	prefetcht0

#endif

#define PREFETCHSIZE (5 + 4 * 10)

#ifndef CONJ

#define ADD1	  faddp

#define ADD2	  fsubrp

#define ADD3	  faddp

#define ADD4	  faddp

#elif defined(LN) || defined(LT)

#define ADD1	  faddp

#define ADD2	  faddp

#define ADD3	  fsubrp

#define ADD4	  faddp

#else

#define ADD1	  faddp

#define ADD2	  faddp

#define ADD3	  faddp

#define ADD4	  fsubrp

#endif

	PROLOGUE

	PROFCODE

	subq	$STACKSIZE, %rsp

	movq	%rbx,  0(%rsp)

	movq	%rbp,  8(%rsp)

	movq	%r12, 16(%rsp)

	movq	%r13, 24(%rsp)

	movq	%r14, 32(%rsp)

	movq	%r15, 40(%rsp)

	movq	40 + STACKSIZE(%rsp), LDC

	salq	$ZBASE_SHIFT, LDC

	addq	$8 * SIZE, A

	addq	$8 * SIZE, B

#ifdef LN

       movq	M, %rax

       salq	$ZBASE_SHIFT, %rax

       addq	%rax, C

       imulq	K, %rax

       addq	%rax, A

#endif

#ifdef RT

       movq	N, %rax

       salq	$ZBASE_SHIFT, %rax

       imulq	K, %rax

       addq	%rax, B

       movq	N, %rax

       imulq	LDC, %rax

       addq	%rax, C

#endif

#ifdef RN

       movq	OFFSET, %rax

       negq	%rax

       movq	%rax, KK

#endif	

#ifdef RT

       movq	N, %rax

       subq	OFFSET, %rax

       movq	%rax, KK

#endif

	cmpq	$0, M

	jle	.L999

	movq	N,   %rax

	movq	%rax, J

	testq	%rax, %rax

	jle	.L999

	ALIGN_4

.L01:

#if defined(LT) || defined(RN)

	movq	A, AO

#else

	movq	A, AORIG

#endif

#ifdef RT

	movq	K, %rax

	salq	$ZBASE_SHIFT, %rax

	subq	%rax, B

#endif

#ifdef RT

	subq	LDC, C

#endif

	movq	C, CO

#ifndef RT

	addq	LDC, C

#endif

#ifdef LN

	movq	OFFSET, %rax

	addq	M, %rax

	movq	%rax, KK

#endif	

#ifdef LT

	movq	OFFSET, %rax

	movq	%rax, KK

#endif

	movq	M,  I

	ALIGN_4

.L11:

#ifdef LN

       movq	K, %rax

       salq	$ZBASE_SHIFT, %rax

       subq	%rax, AORIG

#endif

#if defined(LN) || defined(RT)

	movq	KK, %rax

	salq	$ZBASE_SHIFT, %rax

	movq	AORIG, AO

	leaq	(AO, %rax, 1), AO

	leaq	(B,  %rax, 1), BO

#else

	movq	B, BO

#endif	

	fldz

	fldz

	fldz

	fldz

#if   defined(HAVE_3DNOW)

	prefetchw	2 * SIZE(CO)

#elif defined(HAVE_SSE)

	prefetchnta	2 * SIZE(CO)

#endif

#if defined(LT) || defined(RN)

	movq	KK, %rax

#else

	movq	K,  %rax

	subq	KK, %rax

#endif

	sarq	$2, %rax

 	je	.L15

	ALIGN_4

.L12:

	PREFETCH	(PREFETCHSIZE + 0) * SIZE(AO)

	FLD	 -8 * SIZE(AO)

	FLD	 -8 * SIZE(BO)

	fld	 %st(1)

	fmul	 %st(1), %st

	ADD1	 %st, %st(3)

	FLD	 -7 * SIZE(BO)

	fmul	 %st, %st(2)

	FLD	 -7 * SIZE(AO)

	fmul	 %st, %st(2)

	fmulp	 %st, %st(1)

	ADD2	 %st, %st(6)

	ADD3	 %st, %st(3)

	ADD4	 %st, %st(3)

	FLD	 -6 * SIZE(AO)

	FLD	 -6 * SIZE(BO)

	fld	 %st(1)

	fmul	 %st(1), %st

	ADD1	 %st, %st(3)

	FLD	 -5 * SIZE(BO)

	fmul	 %st, %st(2)

	FLD	 -5 * SIZE(AO)

	fmul	 %st, %st(2)

	fmulp	 %st, %st(1)

	ADD2	 %st, %st(6)

	ADD3	 %st, %st(3)

	ADD4	 %st, %st(3)

	PREFETCH	(PREFETCHSIZE + 4) * SIZE(AO)

	FLD	 -4 * SIZE(AO)

	FLD	 -4 * SIZE(BO)

	fld	 %st(1)

	fmul	 %st(1), %st

	ADD1	 %st, %st(3)

	FLD	 -3 * SIZE(BO)

	fmul	 %st, %st(2)

	FLD	 -3 * SIZE(AO)

	fmul	 %st, %st(2)

	fmulp	 %st, %st(1)

	ADD2	 %st, %st(6)

	ADD3	 %st, %st(3)

	ADD4	 %st, %st(3)

	FLD	 -2 * SIZE(AO)

	FLD	 -2 * SIZE(BO)

	fld	 %st(1)

	fmul	 %st(1), %st

	ADD1	 %st, %st(3)

	FLD	 -1 * SIZE(BO)

	fmul	 %st, %st(2)

	FLD	 -1 * SIZE(AO)

	fmul	 %st, %st(2)

	fmulp	 %st, %st(1)

	ADD2	 %st, %st(6)

	ADD3	 %st, %st(3)

	ADD4	 %st, %st(3)

	addq	$8 * SIZE,AO

	addq	$8 * SIZE,BO

	decq	%rax

	jne	.L12

	ALIGN_4

.L15:

#if defined(LT) || defined(RN)

	movq	KK, %rax

#else

	movq	K,  %rax

	subq	KK, %rax

#endif

	and	$3,  %rax

	je	.L18

	ALIGN_4

.L16:

	FLD	 -8 * SIZE(AO)

	FLD	 -8 * SIZE(BO)

	fld	 %st(1)

	fmul	 %st(1), %st

	ADD1	 %st, %st(3)

	FLD	 -7 * SIZE(BO)

	fmul	 %st, %st(2)

	FLD	 -7 * SIZE(AO)

	fmul	 %st, %st(2)

	fmulp	 %st, %st(1)

	ADD2	 %st, %st(6)

	ADD3	 %st, %st(3)

	ADD4	 %st, %st(3)

	addq	$2 * SIZE,AO

	addq	$2 * SIZE,BO

	decq	%rax

	jne	 .L16

	ALIGN_4

.L18:

	faddp	%st, %st(3)

	faddp	%st, %st(1)

	fxch	%st(1)

#if defined(LN) || defined(RT)

	movq	KK, %rax

#ifdef LN

	subq	$1, %rax

#else

	subq	$1, %rax

#endif

	salq	$ZBASE_SHIFT, %rax

	movq	AORIG, AO

	leaq	(AO, %rax, 1), AO

	leaq	(B,  %rax, 1), BO

#endif

#if defined(LN) || defined(LT)

	FLD	-8 * SIZE(BO)

	fsubp	%st, %st(1)

	FLD	-7 * SIZE(BO)

	fsubp	%st, %st(2)

#else

	FLD	-8 * SIZE(AO)

	fsubp	%st, %st(1)

	FLD	-7 * SIZE(AO)

	fsubp	%st, %st(2)

#endif

#if defined(LN) || defined(LT)

	FLD	-8 * SIZE(AO)

	fmul	%st(1), %st

	FLD	-8 * SIZE(AO)

	fmul	%st(3), %st

	FLD	-7 * SIZE(AO)

	fmulp	%st, %st(3)

	FLD	-7 * SIZE(AO)

	fmulp	%st, %st(4)

#endif

#if defined(RN) || defined(RT)

	FLD	-8 * SIZE(BO)

	fmul	%st(1), %st

	FLD	-8 * SIZE(BO)

	fmul	%st(3), %st

	FLD	-7 * SIZE(BO)

	fmulp	%st, %st(3)

	FLD	-7 * SIZE(BO)

	fmulp	%st, %st(4)

#endif

#ifndef CONJ

	faddp	%st, %st(2)

	fsubp	%st, %st(2)

#else

	fsubp	%st, %st(2)

	faddp	%st, %st(2)

#endif

#if defined(LN) || defined(LT)

	fld	%st

	FST	-7 * SIZE(BO)

	fxch	%st(1)

	fld	%st

	FST	-8 * SIZE(BO)

#else

	fld	%st

	FST	-7 * SIZE(AO)

	fxch	%st(1)

	fld	%st

	FST	-8 * SIZE(AO)

#endif

#ifdef LN

	subq	$2 * SIZE, CO

#endif

	FST	0 * SIZE(CO)

	FST	1 * SIZE(CO)

#ifndef LN

	addq	$2 * SIZE, CO

#endif

#if defined(LT) || defined(RN)

	movq	K,  %rax

	subq	KK, %rax

	salq	$ZBASE_SHIFT, %rax

	leaq	(AO, %rax, 1), AO

	leaq	(BO, %rax, 1), BO

#endif

#ifdef LN

	subq	$1, KK

#endif

#ifdef LT

	addq	$1, KK

#endif

#ifdef RT

       movq	K, %rax

       salq	$ZBASE_SHIFT, %rax

       addq	%rax, AORIG

#endif

	decq	I

	jne	.L11

#ifdef LN

       movq	K, %rax

       salq	$ZBASE_SHIFT, %rax

       leaq	(B, %rax, 1), B

#endif

#if defined(LT) || defined(RN)

	movq	BO, B

#endif

#ifdef RN

	addq	$1, KK

#endif

#ifdef RT

	subq	$1, KK

#endif

	decq	J

	jne	.L01

	ALIGN_4

.L999:

	movq	  0(%rsp), %rbx

	movq	  8(%rsp), %rbp

	movq	 16(%rsp), %r12

	movq	 24(%rsp), %r13

	movq	 32(%rsp), %r14

	movq	 40(%rsp), %r15

	addq	$STACKSIZE, %rsp

	ret

	EPILOGUE