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

/* 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"

#ifdef PENTIUM

#define P 32

#endif

#if defined(ATHLON) || defined(OPTERON)

#define P 32

#endif

#ifndef P

#define P DTB_DEFAULT_ENTRIES

#endif

#define STACK	16

#define ARGS	16

#define PLDA_M	  0 + STACK(%esp)

#define XP	  4 + STACK(%esp)

#define MIN_N	  8 + STACK(%esp)

#define IS	 12 + STACK(%esp)

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

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

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

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

#define A	32 + STACK + ARGS(%esp)

#define LDA	36 + STACK + ARGS(%esp)

#define X	40 + STACK + ARGS(%esp)

#define INCX	44 + STACK + ARGS(%esp)

#define Y	48 + STACK + ARGS(%esp)

#define INCY	52 + STACK + ARGS(%esp)

#define BUFFER	56 + STACK + ARGS(%esp)

	PROLOGUE

	subl	$ARGS, %esp

	pushl	%ebp

	pushl	%edi

	pushl	%esi

	pushl	%ebx

	PROFCODE

	FLD	ALPHA

	movl	X, %edi

	movl	LDA, %ebx

	sall	$BASE_SHIFT, %ebx

	movl	$0, IS

	movl	M, %edx

	movl	N, %esi

	test	%esi, %esi

	jle	.L79			# goto END

	test	%edx, %edx

	jle	.L79			# goto END

	movl	INCY, %eax

	sall	$BASE_SHIFT, %eax

	movl	%eax, INCY

	movl	LDA, %eax

	imull	$P,  %eax		# P * lda

	subl	M   ,%eax		# P * lda - m

	sall	$BASE_SHIFT, %eax

	movl	%eax, PLDA_M

	ALIGN_2

.L32:

	movl	IS, %esi

	movl	$P, %edx

	movl	N,   %eax

	subl	%esi,%eax		# n - is

	cmpl	%edx,  %eax

#ifdef PENTIUM

	jle	.L33

	movl	%edx,  %eax

.L33:

#else

	cmovg	%edx,  %eax

#endif

	movl	%eax, MIN_N

	movl	INCX, %edx

	sall	$BASE_SHIFT, %esi

	leal	(%edi, %esi, 1), %esi

	movl	%esi, XP

	cmpl	$1, %edx

	je	.L34			# if incx == 1 goto L34

	movl	BUFFER, %esi

	sall	$BASE_SHIFT, %edx

	movl	%esi, XP		# xp = buffer

	sarl	$2,%eax

	jle	.L35

	ALIGN_2

.L36:

	FLD	(%edi)

	addl	%edx,%edi		# x += incx

	FLD	(%edi)

	addl	%edx,%edi		# x += incx

	FLD	(%edi)

	addl	%edx,%edi		# x += incx

	FLD	(%edi)

	addl	%edx,%edi		# x += incx

	FST	3 * SIZE(%esi)

	FST	2 * SIZE(%esi)

	FST	1 * SIZE(%esi)

	FST	0 * SIZE(%esi)

	addl	$4 * SIZE, %esi		# xp += 4

	decl	%eax

	jg	.L36

	ALIGN_3

.L35:

	movl	MIN_N, %eax

	andl	$3,    %eax

	jle	.L34

	ALIGN_2

.L42:

	FLD	(%edi)

	addl	%edx,  %edi

	FST	(%esi)

	addl	$SIZE, %esi

	decl	%eax

	jg	.L42

	ALIGN_3

/* Main Routine */

.L34:

	movl	 Y, %ecx		# c_offset

	movl	 M, %ebp

	sarl	$2, %ebp		# j = (m >> 2)

	jle	.L47

	ALIGN_2

.L48:

	movl	A, %edx			# a_offset = a	

	fldz

	addl	$4 * SIZE, A		# a += 4

	fldz

	movl	XP, %esi		# b_offset = xp

	fldz

	movl	MIN_N, %eax		# i = min_n

	fldz

	FLD	(%esi)			# bt1 = b_offset

	sarl	$1,    %eax

	jle	.L51

	ALIGN_2

#ifdef PENTIUM3

#define PRESIZE  8

#else

#define PRESIZE 24

#endif

.L80:

#ifdef PENTIUM3

       prefetcht1	PRESIZE * SIZE(%edx, %ebx, 1)

	FLD	0 * SIZE(%edx)		# at1  = *(a_offset + 0)

	fmul	%st(1), %st		# at1 *= bt1

       prefetcht1	PRESIZE * SIZE(%esi)

	faddp	%st, %st(2)		# ct1 += at1

	FLD	1 * SIZE(%edx)		# at1  = *(a_offset + 1)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(3)		# ct2 += at1

	FLD	2 * SIZE(%edx)		# at1  = *(a_offset + 2)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(4)		# ct3 += at1

	FLD	3 * SIZE(%edx)		# bt1 *= *(a_offset + 3)

	fmulp	%st, %st(1)

	faddp	%st, %st(4)		# ct4 += at1

	FLD	1 * SIZE(%esi)		# bt1 = b_offset

       prefetcht1	PRESIZE * SIZE(%edx, %ebx, 2)

	addl	%ebx, %edx		# a_offset += lda

	FLD	0 * SIZE(%edx)		# at1  = *(a_offset + 0)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(2)		# ct1 += at1

	FLD	1 * SIZE(%edx)		# at1  = *(a_offset + 1)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(3)		# ct2 += at1

	FLD	2 * SIZE(%edx)		# at1  = *(a_offset + 2)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(4)		# ct3 += at1

	FLD	3 * SIZE(%edx)		# bt1 *= *(a_offset + 3)

	fmulp	%st, %st(1)

	addl	%ebx, %edx

	faddp	%st, %st(4)		# ct4 += at1

	FLD	2 * SIZE(%esi)		# bt1 = b_offset

	addl	$2 * SIZE, %esi		# b_offset += 2

#else

#ifdef PENTIUM4

       prefetchnta	 8 * SIZE(%esi)

#endif

	FLD	0 * SIZE(%edx)		# at1  = *(a_offset + 0)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(2)		# ct1 += at1

	FLD	1 * SIZE(%edx)		# at1  = *(a_offset + 1)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(3)		# ct2 += at1

	FLD	2 * SIZE(%edx)		# at1  = *(a_offset + 2)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(4)		# ct3 += at1

	FLD	3 * SIZE(%edx)		# bt1 *= *(a_offset + 3)

	fmulp	%st, %st(1)

	faddp	%st, %st(4)		# ct4 += at1

	FLD	1 * SIZE(%esi)		# bt1 = b_offset

	addl	%ebx, %edx		# a_offset += lda

	FLD	0 * SIZE(%edx)		# at1  = *(a_offset + 0)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(2)		# ct1 += at1

	FLD	1 * SIZE(%edx)		# at1  = *(a_offset + 1)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(3)		# ct2 += at1

	FLD	2 * SIZE(%edx)		# at1  = *(a_offset + 2)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(4)		# ct3 += at1

	FLD	3 * SIZE(%edx)		# bt1 *= *(a_offset + 3)

	fmulp	%st, %st(1)

	faddp	%st, %st(4)		# ct4 += at1

	FLD	2 * SIZE(%esi)		# bt1 = b_offset

	addl	%ebx, %edx

	addl	$2 * SIZE, %esi		# b_offset += 2

#endif

	decl	%eax

	jg	.L80

.L51:

	movl	MIN_N,%eax

	andl	$1, %eax

	je	.L57

	FLD	0 * SIZE(%edx)		# at1  = *(a_offset + 0)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(2)		# ct1 += at1

	FLD	1 * SIZE(%edx)		# at1  = *(a_offset + 1)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(3)		# ct2 += at1

	FLD	2 * SIZE(%edx)		# at1  = *(a_offset + 2)

	fmul	%st(1), %st		# at1 *= bt1

	faddp	%st, %st(4)		# ct3 += at1

	FLD	3 * SIZE(%edx)		# bt1 *= *(a_offset + 3)

	fmulp	%st, %st(1)

	faddp	%st, %st(4)		# ct4 += at1

	fldz

	ALIGN_2

.L57:

	ffreep	%st(0)

	fxch	%st(4)

	fmul	%st, %st(4)

	fmul	%st, %st(1)

	fmul	%st, %st(2)

	fmul	%st, %st(3)

	fxch	%st(4)

	movl	INCY, %eax

	FLD	(%ecx)

	faddp	%st, %st(1)

	FST	(%ecx)

	addl	%eax, %ecx

	FLD	(%ecx)

	faddp	%st, %st(1)

	FST	(%ecx)

	addl	%eax, %ecx

	FLD	(%ecx)

	faddp	%st, %st(1)

	FST	(%ecx)

	addl	%eax, %ecx

	FLD	(%ecx)

	faddp	%st, %st(1)

	FST	(%ecx)

	addl	%eax, %ecx

	decl	%ebp		# j --

	jg	.L48

	ALIGN_3

.L47:

	movl	M,  %ebp

	andl	$3, %ebp		# j = (m & 3)

	jle	.L60

	ALIGN_2

.L61:

	movl	A, %edx			# a_offset = a

	fldz

	addl	$SIZE, A		# a++

	fldz

	movl	XP,%esi

	fldz

	movl	MIN_N,%eax

	fldz

	sarl	$3,%eax

	jle	.L64

	ALIGN_2

.L65:

	FLD	0 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st, %st(1)

	addl	%ebx, %edx

	FLD	1 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st, %st(2)

	addl	%ebx ,%edx

	FLD	2 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st, %st(3)

	addl	%ebx, %edx

	FLD	3 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st, %st(4)

	addl	%ebx, %edx

	FLD	4 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st,%st(1)

	addl	%ebx, %edx

	FLD	5 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st, %st(2)

	addl	%ebx, %edx

	FLD	6 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st,%st(3)

	addl	%ebx, %edx

	FLD	7 * SIZE(%esi)

	FLD	(%edx)

	fmulp	%st, %st(1)

	faddp	%st,%st(4)

	addl	%ebx, %edx

	addl	$8 * SIZE, %esi

	decl	%eax

	jg	.L65

.L64:

	movl	MIN_N,%eax

	andl	$7, %eax

	jle	.L70

	ALIGN_2

.L71:

	FLD	(%esi)

	addl	$SIZE, %esi	 # b_offset ++

	FLD	(%edx)

	fmulp	%st, %st(1)

	addl	%ebx,  %edx	 # a_offset += lda

	faddp	%st, %st(1)

	decl	%eax

	jg	.L71

	ALIGN_2

.L70:

	faddp	%st, %st(1)

	faddp	%st, %st(1)

	faddp	%st, %st(1)

	fmul	%st(1), %st

	movl	INCY,  %eax

	FLD	(%ecx)

	faddp	%st, %st(1)

	FST	(%ecx)

	addl	%eax, %ecx

	decl	%ebp

	jg	.L61

.L60:

	movl	PLDA_M, %esi

	addl	%esi, A		# a += P * lda - m

	addl	$P, IS

	movl	N, %esi

	cmpl	%esi,IS

	jl	.L32

.L79:

	ffreep	%st(0)

	popl	%ebx

	popl	%esi

	popl	%edi

	popl	%ebp

	addl	$ARGS, %esp

	ret

	EPILOGUE