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

/* 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 STACK	16

#define ARGS	 8

#define J	 0 + STACK(%esp)

#define BOFFSET2 4 + STACK(%esp)

#define STACK_M	 4 + STACK + ARGS(%esp)

#define STACK_N	 8 + STACK + ARGS(%esp)

#define STACK_A	12 + STACK + ARGS(%esp)

#define STACK_LDA	16 + STACK + ARGS(%esp)

#define STACK_B	20 + STACK + ARGS(%esp)

	PROLOGUE

	subl	$ARGS, %esp

	pushl	%ebp

	pushl	%edi

	pushl	%esi

	pushl	%ebx

	PROFCODE

#define A	%ebp

#define A1	%edx

#define LDA	%ecx

#define B	%edi

#define I	%ebx

#define B1	%eax

#define M4	%esi

	EMMS

	movl	STACK_A, A

	movl	STACK_B, B

	movl	STACK_M,   %ebx

	movl	STACK_N,   %eax

	movl	STACK_LDA, LDA

	sall	$ZBASE_SHIFT, LDA

	andl	$-2,  %eax

	addl	%eax, %eax

	imull	%ebx, %eax		# m * ( n & ~1)

	leal	(B, %eax, SIZE), %eax	# boffset2 = b + m * (n & ~1)

	movl	%eax, BOFFSET2

	movl	STACK_M, M4

	sall	$ZBASE_SHIFT + 1, M4

	testl	%ebx,  %ebx		# if !(m & 1) goto L28

	movl	%ebx, J

	jle	.L999

	ALIGN_4

.L39:

	movl	A, A1

	addl	LDA, A

	movl	B, B1

	addl	$4 * SIZE, B

	movl	STACK_N,   I

	sarl	$1, I

	jle	.L32

	ALIGN_4

.L36:

#ifdef HAVE_MMX

	MMXLOAD		0 * SIZE(A1), %mm0

	MMXLOAD		1 * SIZE(A1), %mm1

	MMXLOAD		2 * SIZE(A1), %mm2

	MMXLOAD		3 * SIZE(A1), %mm3

	MMXSTORE	%mm0, 0 * SIZE(B1)

	MMXSTORE	%mm1, 1 * SIZE(B1)

	MMXSTORE	%mm2, 2 * SIZE(B1)

	MMXSTORE	%mm3, 3 * SIZE(B1)

#else

	FLD	3 * SIZE(A1)

	FLD	2 * SIZE(A1)

	FLD	1 * SIZE(A1)

	FLD	0 * SIZE(A1)

	FST	0 * SIZE(B1)

	FST	1 * SIZE(B1)

	FST	2 * SIZE(B1)

	FST	3 * SIZE(B1)

#endif

	addl	$4 * SIZE, A1

	addl	M4, B1

	decl	I

	jne	.L36

	ALIGN_4

.L32:

	movl	STACK_N,   I

	andl	$1, I

	jle	.L99

	ALIGN_4

	movl	BOFFSET2, B1

#ifdef HAVE_MMX

	MMXLOAD		0 * SIZE(A1), %mm0

	MMXLOAD		1 * SIZE(A1), %mm1

	MMXSTORE	%mm0, 0 * SIZE(B1)

	MMXSTORE	%mm1, 1 * SIZE(B1)

#else

	FLD	1 * SIZE(A1)

	FLD	0 * SIZE(A1)

	FST	0 * SIZE(B1)

	FST	1 * SIZE(B1)

#endif

	addl	$2 * SIZE, BOFFSET2

	ALIGN_4

.L99:

	decl	J

	jne	.L39

	ALIGN_4

.L999:

	EMMS

	popl	%ebx

	popl	%esi

	popl	%edi

	popl	%ebp

	addl	$ARGS,%esp

	ret

	EPILOGUE