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

/* 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	 0

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

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

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

#define RET	%eax

#define	M	%ebx

#define X	%ecx

#define INCX	%edx

#define I	%esi

#define MM	%ebp

#define XX	%edi

#define TEMP	%ebx

#ifdef USE_MIN

#define maxps	minps

#define maxss	minss

#endif

#ifndef HAVE_SSE2

#define pxor	xorps

#define movsd	movlps

#endif

#include "l1param.h"

	PROLOGUE

	pushl	%ebp

	pushl	%edi

	pushl	%esi

	pushl	%ebx

	PROFCODE

	movl	STACK_M, M

	movl	STACK_X, X

	movl	STACK_INCX, INCX

	pxor	%xmm0, %xmm0

	pxor	%xmm7, %xmm7

	xor	RET, RET

	testl	M, M

	jle	.L999

	testl	INCX, INCX

	jle	.L999

	sall	$ZBASE_SHIFT, INCX

	movl	M, MM

	movl	X, XX

#ifdef USE_ABS

#ifndef HAVE_SSE2

	subl	$8, %esp

	movl	$0x7fffffff, (%esp)

	movss	(%esp), %xmm7

	shufps	$0, %xmm7, %xmm7

	addl	$8, %esp

#else

	cmpeqps	%xmm7, %xmm7

	psrld	$1, %xmm7		/* Generate USE_ABS */

#endif

#endif

	movss	0 * SIZE(XX), %xmm0

	movss	1 * SIZE(XX), %xmm1

	addl	INCX, XX

	decl	MM

#ifdef USE_ABS

	andps	%xmm7, %xmm0

	andps	%xmm7, %xmm1

#endif

	addps	%xmm1,  %xmm0

	shufps	$0, %xmm0, %xmm0

	cmpl	$2 * SIZE, INCX

	jne	.L70

.L30:

	movl	MM,  I

	sarl	$3, I

	jle	.L35

	ALIGN_4

.L31:

#ifdef PREFETCH

	PREFETCH (PREFETCHSIZE +  0) - PREOFFSET(XX)

#endif

	movsd	 0 * SIZE(XX), %xmm1

	movhps	 2 * SIZE(XX), %xmm1

	movsd	 4 * SIZE(XX), %xmm2

	movhps	 6 * SIZE(XX), %xmm2

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

#endif

	movsd	 8 * SIZE(XX), %xmm1

	movhps	10 * SIZE(XX), %xmm1

	movsd	12 * SIZE(XX), %xmm2

	movhps	14 * SIZE(XX), %xmm2

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

#endif

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

	addl	$16 * SIZE, XX

	decl	I

	jg	.L31

	ALIGN_4

.L35:

	andl	$7,  MM

	jle	.L40

	testl	$4, MM

	je	.L36

	movsd	 0 * SIZE(XX), %xmm1

	movhps	 2 * SIZE(XX), %xmm1

	movsd	 4 * SIZE(XX), %xmm2

	movhps	 6 * SIZE(XX), %xmm2

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

#endif

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

	addl	$8 * SIZE, XX

	ALIGN_3

.L36:

	testl	$2, MM

	je	.L37

	movss	0 * SIZE(XX), %xmm1

	movss	1 * SIZE(XX), %xmm2

	movss	2 * SIZE(XX), %xmm3

	movss	3 * SIZE(XX), %xmm4

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm2

	andps	%xmm7, %xmm3

	andps	%xmm7, %xmm4

#endif

	addps	%xmm2,  %xmm1

	addps	%xmm4,  %xmm3

	maxss	%xmm1,  %xmm0

	maxss	%xmm3,  %xmm0

	addl	$4 * SIZE, XX

	ALIGN_3	

.L37:

	testl	$1, MM

	je	.L40

	movss	0 * SIZE(XX), %xmm1

	movss	1 * SIZE(XX), %xmm2

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm2

#endif

	addps	%xmm2,  %xmm1

	maxss	%xmm1,  %xmm0

	ALIGN_4

.L40:

	movaps	%xmm0, %xmm1

	movhlps %xmm0, %xmm0

	maxps	%xmm1, %xmm0

	movaps	%xmm0, %xmm1

	shufps	$1, %xmm0, %xmm0

	maxss	%xmm1, %xmm0

	jmp	.L999

	ALIGN_4

.L70:

	movl	MM,  I

	sarl	$3, I

	jle	.L75

	ALIGN_4

.L71:

#ifdef PREFETCH

	PREFETCH (PREFETCHSIZE +  0) - PREOFFSET(XX)

#endif

	movsd	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movsd	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

#endif

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

	movsd	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movsd	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

#endif

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

	decl	I

	jg	.L71

	ALIGN_4

.L75:

	andl	$7,  MM

	jle	.L80

	testl	$4, MM

	je	.L76

	movsd	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm1

	addl	INCX, XX

	movsd	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movhps	0 * SIZE(XX), %xmm2

	addl	INCX, XX

	movaps	%xmm1, %xmm3

	shufps	$0x88, %xmm2, %xmm1

	shufps	$0xdd, %xmm2, %xmm3

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm3

#endif

	addps	%xmm3,  %xmm1

	maxps	%xmm1,  %xmm0

	ALIGN_3	

.L76:

	testl	$2, MM

	je	.L77

	movss	0 * SIZE(XX), %xmm1

	movss	1 * SIZE(XX), %xmm2

	addl	INCX, XX

	movss	0 * SIZE(XX), %xmm3

	movss	1 * SIZE(XX), %xmm4

	addl	INCX, XX

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm2

	andps	%xmm7, %xmm3

	andps	%xmm7, %xmm4

#endif

	addps	%xmm2,  %xmm1

	addps	%xmm4,  %xmm3

	maxss	%xmm1,  %xmm0

	maxss	%xmm3,  %xmm0

	ALIGN_3

.L77:

	testl	$1, MM

	je	.L80

	movss	0 * SIZE(XX), %xmm1

	movss	1 * SIZE(XX), %xmm2

#ifdef USE_ABS

	andps	%xmm7, %xmm1

	andps	%xmm7, %xmm2

#endif

	addps	%xmm2,  %xmm1

	maxss	%xmm1,  %xmm0

	ALIGN_4

.L80:

	movaps	%xmm0, %xmm1

	movhlps %xmm0, %xmm0

	maxps	%xmm1, %xmm0

	movaps	%xmm0, %xmm1

	shufps	$1, %xmm0, %xmm0

	maxss	%xmm1, %xmm0

	ALIGN_4

.L999:

	subl	$8, %esp

	movss	%xmm0, (%esp)

	flds	(%esp)

	addl	$8, %esp

	popl	%ebx

	popl	%esi

	popl	%edi

	popl	%ebp

	ret

	EPILOGUE