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

/* 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"

#if defined(NEHALEM)

#define RPREFETCHSIZE	12

#define WPREFETCHSIZE (RPREFETCHSIZE * 2)

#define PREFETCH      prefetcht0

#define PREFETCHW     prefetcht0

#endif

#ifndef WINDOWS_ABI

#define M	ARG1	/* rdi */

#define N	ARG2	/* rsi */

#define A	ARG3	/* rdx */

#define LDA	ARG4	/* rcx */

#define B	ARG5	/* r8  */

#define I	%r9

#else

#define STACKSIZE 256

#define M	ARG1	/* rcx */

#define N	ARG2	/* rdx */

#define A	ARG3	/* r8  */

#define LDA	ARG4	/* r9  */

#define OLD_B		40 + 32 + STACKSIZE(%rsp)

#define B	%r14

#define I	%r15

#endif

#define J	%r10

#define AO1	%r11

#define AO2	%r12

#define AO3	%r13

#define AO4	%rax

	PROLOGUE

	PROFCODE

#ifdef WINDOWS_ABI

	pushq	%r15

	pushq	%r14

#endif

	pushq	%r13

	pushq	%r12

#ifdef WINDOWS_ABI

	subq	$STACKSIZE, %rsp

	movups	%xmm6,    0(%rsp)

	movups	%xmm7,   16(%rsp)

	movups	%xmm8,   32(%rsp)

	movups	%xmm9,   48(%rsp)

	movups	%xmm10,  64(%rsp)

	movups	%xmm11,  80(%rsp)

	movups	%xmm12,  96(%rsp)

	movups	%xmm13, 112(%rsp)

	movups	%xmm14, 128(%rsp)

	movups	%xmm15, 144(%rsp)

	movq	OLD_B,     B

#endif

	leaq	(,LDA, SIZE), LDA		# Scaling

	movq	N,  J

	sarq	$1, J

	jle	.L20

	ALIGN_4

.L12:

	movq	A, AO1

	leaq	(A,   LDA), AO2

	leaq	(A, LDA, 2), A

	movq	M,  I

	sarq	$2, I

	jle	.L14

	ALIGN_4

.L13:

#ifndef DOUBLE

	movss	0 * SIZE(AO1), %xmm0

	movss	0 * SIZE(AO2), %xmm1

	movss	1 * SIZE(AO1), %xmm2

	movss	1 * SIZE(AO2), %xmm3

	movss	2 * SIZE(AO1), %xmm4

	movss	2 * SIZE(AO2), %xmm5

	movss	3 * SIZE(AO1), %xmm6

	movss	3 * SIZE(AO2), %xmm7

	movss	%xmm0,   0 * SIZE(B)

	movss	%xmm1,   1 * SIZE(B)

	movss	%xmm2,   2 * SIZE(B)

	movss	%xmm3,   3 * SIZE(B)

	movss	%xmm4,   4 * SIZE(B)

	movss	%xmm5,   5 * SIZE(B)

	movss	%xmm6,   6 * SIZE(B)

	movss	%xmm7,   7 * SIZE(B)

#else

	PREFETCH	RPREFETCHSIZE * SIZE(AO1)

	movsd	0 * SIZE(AO1), %xmm0

	movhpd	0 * SIZE(AO2), %xmm0

	movsd	1 * SIZE(AO1), %xmm1

	movhpd	1 * SIZE(AO2), %xmm1

	PREFETCH	RPREFETCHSIZE * SIZE(AO2)

	movsd	2 * SIZE(AO1), %xmm2

	movhpd	2 * SIZE(AO2), %xmm2

	movsd	3 * SIZE(AO1), %xmm3

	movhpd	3 * SIZE(AO2), %xmm3

	PREFETCHW	WPREFETCHSIZE * SIZE(B)

	movapd	%xmm0,   0 * SIZE(B)

	movapd	%xmm1,   2 * SIZE(B)

	movapd	%xmm2,   4 * SIZE(B)

	movapd	%xmm3,   6 * SIZE(B)

#endif

	addq	$4 * SIZE, AO1

	addq	$4 * SIZE, AO2

	subq	$-8 * SIZE, B

	decq	I

	jg	.L13

	ALIGN_4

.L14:

	movq	M,  I

	andq	$3, I

	jle	.L16

	ALIGN_4

.L15:

#ifndef DOUBLE

	movss	0 * SIZE(AO1), %xmm0

	movss	0 * SIZE(AO2), %xmm1

	movss	%xmm0,   0 * SIZE(B)

	movss	%xmm1,   1 * SIZE(B)

#else

	movsd	0 * SIZE(AO1), %xmm0

	movhpd	0 * SIZE(AO2), %xmm0

	movapd	%xmm0,   0 * SIZE(B)

#endif

	addq	$SIZE, AO1

	addq	$SIZE, AO2

	addq	$2 * SIZE, B

	decq	I

	jg	.L15

	ALIGN_4

.L16:

	decq	J

	jg	.L12

	ALIGN_4

.L20:

	testq	$1, N

	jle	.L999

	movq	A, AO1

	movq	M,  I

	sarq	$2, I

	jle	.L34

	ALIGN_4

.L33:

#ifndef DOUBLE

	movss	0 * SIZE(AO1), %xmm0

	movss	1 * SIZE(AO1), %xmm1

	movss	2 * SIZE(AO1), %xmm2

	movss	3 * SIZE(AO1), %xmm3

	movss	%xmm0,   0 * SIZE(B)

	movss	%xmm1,   1 * SIZE(B)

	movss	%xmm2,   2 * SIZE(B)

	movss	%xmm3,   3 * SIZE(B)

#else

	movsd	0 * SIZE(AO1), %xmm0

	movhpd	1 * SIZE(AO1), %xmm0

	movsd	2 * SIZE(AO1), %xmm1

	movhpd	3 * SIZE(AO1), %xmm1

	movapd	%xmm0,   0 * SIZE(B)

	movapd	%xmm1,   2 * SIZE(B)

#endif

	addq	$4 * SIZE, AO1

	subq	$-4 * SIZE, B

	decq	I

	jg	.L33

	ALIGN_4

.L34:

	movq	M,  I

	andq	$3, I

	jle	.L999

	ALIGN_4

.L35:

#ifndef DOUBLE

	movss	0 * SIZE(AO1), %xmm0

	movss	%xmm0,   0 * SIZE(B)

#else

	movsd	0 * SIZE(AO1), %xmm0

	movsd	%xmm0,   0 * SIZE(B)

#endif

	addq	$SIZE, AO1

	addq	$1 * SIZE, B

	decq	I

	jg	.L35

	ALIGN_4

.L999:

#ifdef WINDOWS_ABI

	movups	  0(%rsp), %xmm6

	movups	 16(%rsp), %xmm7

	movups	 32(%rsp), %xmm8

	movups	 48(%rsp), %xmm9

	movups	 64(%rsp), %xmm10

	movups	 80(%rsp), %xmm11

	movups	 96(%rsp), %xmm12

	movups	112(%rsp), %xmm13

	movups	128(%rsp), %xmm14

	movups	144(%rsp), %xmm15

	addq	$STACKSIZE, %rsp

#endif

	popq	%r12

	popq	%r13

#ifdef WINDOWS_ABI

	popq	%r14

	popq	%r15

#endif

	ret

	EPILOGUE