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

/* 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"

#ifndef WINDOWS_ABI

#define M	ARG1

#define N	ARG2

#define C	ARG3

#define LDC	ARG4

#define C1	ARG5

#define STACK_C	  16(%rsp)

#define STACK_LDC 24(%rsp)

#else

#define STACKSIZE 256

#define M	ARG1

#define N	ARG2

#define C	ARG3

#define LDC	ARG4

#define C1	%r10

#define STACK_ALPHA_I	40 + STACKSIZE(%rsp)

#define STACK_C		80 + STACKSIZE(%rsp)

#define STACK_LDC	88 + STACKSIZE(%rsp)

#endif

#define I	%rax

	PROLOGUE

	PROFCODE

#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)

	movaps	%xmm3, %xmm0

	movsd	STACK_ALPHA_I, %xmm1

#endif

	pxor	%xmm15, %xmm15

	movq	STACK_C,   C

	movq	STACK_LDC, LDC

	testq	M, M

	jle	.L999

	testq	N, N

	jle	.L999

	salq	$ZBASE_SHIFT, LDC

#ifdef DOUBLE

	ucomisd	%xmm15, %xmm0

	jne	.L71

	ucomisd	%xmm15, %xmm1

	jne	.L71

#else

	ucomiss	%xmm15, %xmm0

	jne	.L71

	ucomiss	%xmm15, %xmm1

	jne	.L71

#endif

	ALIGN_2

.L53:

	movq	C, C1		# c_offset1 = c_offset

	addq	LDC, C		# c_offset += ldc

	movq	M,  I

	sarq	$2, I

	jle	.L56

	ALIGN_2

.L57:

#ifdef OPTERON

	prefetchw	64 * SIZE(C1)

#endif

	MOVSD	%xmm0, 0 * SIZE(C1)		# c_offset1

	MOVSD	%xmm0, 1 * SIZE(C1)

	MOVSD	%xmm0, 2 * SIZE(C1)

	MOVSD	%xmm0, 3 * SIZE(C1)

	MOVSD	%xmm0, 4 * SIZE(C1)

	MOVSD	%xmm0, 5 * SIZE(C1)

	MOVSD	%xmm0, 6 * SIZE(C1)

	MOVSD	%xmm0, 7 * SIZE(C1)

	addq	$8 * SIZE, C1		# c_offset1 += 8

	decq	I			# i--

	jg	.L57

	ALIGN_2

.L56:

	movq	M,  I

	andq	$3, I

	jle	.L62

	ALIGN_2

.L63:

	MOVSD	%xmm0, 0 * SIZE(C1)

	MOVSD	%xmm0, 1 * SIZE(C1)

	addq	$2 * SIZE,C1

	decq	I

	jg	.L63

	ALIGN_2

.L62:

	decq	N			# j --

	jg	.L53

	jmp	.L999

	ALIGN_3

.L71:

	movq	C, C1

	addq	LDC, C		# c_offset += ldc

	movq	M,  I

	sarq	$1, I

	jle	.L84

	ALIGN_3

.L85:

#ifdef OPTERON

	prefetchw	16 * SIZE(C1)

#endif

	MOVSD	0 * SIZE(C1), %xmm2

	MOVSD	1 * SIZE(C1), %xmm3

	MOVSD	0 * SIZE(C1), %xmm4

	MOVSD	1 * SIZE(C1), %xmm5

	MOVSD	2 * SIZE(C1), %xmm6

	MOVSD	3 * SIZE(C1), %xmm7

	MOVSD	2 * SIZE(C1), %xmm8

	MOVSD	3 * SIZE(C1), %xmm9

	MULSD	%xmm0, %xmm2

	MULSD	%xmm1, %xmm3

	MULSD	%xmm1, %xmm4

	MULSD	%xmm0, %xmm5

	MULSD	%xmm0, %xmm6

	MULSD	%xmm1, %xmm7

	MULSD	%xmm1, %xmm8

	MULSD	%xmm0, %xmm9

	SUBSD	%xmm3, %xmm2

	ADDPD	%xmm5, %xmm4

	SUBSD	%xmm7, %xmm6

	ADDPD	%xmm9, %xmm8

	MOVSD	%xmm2, 0 * SIZE(C1)

	MOVSD	%xmm4, 1 * SIZE(C1)

	MOVSD	%xmm6, 2 * SIZE(C1)

	MOVSD	%xmm8, 3 * SIZE(C1)

	addq	$4 * SIZE, C1

	decq	I

	jg	.L85

	ALIGN_3

.L84:

	testq	$1, M

	jle	.L74

	ALIGN_3

.L75:

	prefetchnta	80 * SIZE(C1)

	MOVSD	0 * SIZE(C1), %xmm2

	MULSD	%xmm0, %xmm2

	MOVSD	1 * SIZE(C1), %xmm3

	MULSD	%xmm1, %xmm3

	MOVSD	0 * SIZE(C1), %xmm4

	MULSD	%xmm1, %xmm4

	MOVSD	1 * SIZE(C1), %xmm5

	MULSD	%xmm0, %xmm5

	SUBSD	%xmm3, %xmm2

	ADDPD	%xmm5, %xmm4

	MOVSD	%xmm2, 0 * SIZE(C1)

	MOVSD	%xmm4, 1 * SIZE(C1)

	ALIGN_2

.L74:

	decq	N

	jg	.L71

	ALIGN_2

.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

	ret

	EPILOGUE