/*********************************************************************/
/* 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	M	r3
#define	N	r4
#define	C	r10
#define	LDC	r11
#define	J	r5
#define PRE	r6
#define	CO1	r7

#define ALPHA	f31

#define STACKSIZE 32

	PROLOGUE
	PROFCODE

	addi	SP, SP, -STACKSIZE
	li	r0, 0

	stfd	f14,    0(SP)
	stfd	f15,    8(SP)
	stfd	f31,   16(SP)
	stw	r0,    24(SP)

#ifdef linux
#ifndef __64BIT__
	lwz	LDC,      8 + STACKSIZE(SP)
#else
	ld	C,      112 + STACKSIZE(SP)
	ld	LDC,    120 + STACKSIZE(SP)
#endif
#endif

#if defined(_AIX) || defined(__APPLE__)
#ifdef __64BIT__
	ld	C,      112 + STACKSIZE(SP)
	ld	LDC,    120 + STACKSIZE(SP)
#else
#ifdef DOUBLE
	lwz	C,       60 + STACKSIZE(SP)
	lwz	LDC,     64 + STACKSIZE(SP)
#else
	lwz	C,       56 + STACKSIZE(SP)
	lwz	LDC,     60 + STACKSIZE(SP)
#endif
#endif
#endif

	slwi	LDC, LDC, BASE_SHIFT

	fmr	ALPHA, f1
	lfs	f0,    24(SP)
	
	cmpwi	cr0, M, 0
	ble-	LL(999)
	cmpwi	cr0, N, 0
	ble-	LL(999)

	mr	J, N
	fcmpu	cr7, f1, f0
	bne	cr7, LL(20)
	.align 4

LL(10):
	mr	CO1, C
	add	C,  C, LDC
	addi	PRE, 0, 32 * SIZE

	srawi.	r0,  M,  4
	mtspr	CTR, r0
	ble	LL(15)
	.align 4

LL(12):
	STFD	f0,   0 * SIZE(CO1)
	STFD	f0,   1 * SIZE(CO1)
	STFD	f0,   2 * SIZE(CO1)
	STFD	f0,   3 * SIZE(CO1)
	STFD	f0,   4 * SIZE(CO1)
	STFD	f0,   5 * SIZE(CO1)
	STFD	f0,   6 * SIZE(CO1)
	STFD	f0,   7 * SIZE(CO1)
	STFD	f0,   8 * SIZE(CO1)
	STFD	f0,   9 * SIZE(CO1)
	STFD	f0,  10 * SIZE(CO1)
	STFD	f0,  11 * SIZE(CO1)
	STFD	f0,  12 * SIZE(CO1)
	STFD	f0,  13 * SIZE(CO1)
	STFD	f0,  14 * SIZE(CO1)
	STFD	f0,  15 * SIZE(CO1)

	dcbst	PRE, CO1
	addi	CO1, CO1,  16 * SIZE
	bdnz	LL(12)
	.align 4
	
LL(15):
	andi.	r0,  M,  15
	mtspr	CTR, r0
	beq	LL(19)
	.align 4

LL(16):
	STFD	f0,  0 * SIZE(CO1)
	addi	CO1, CO1, 1 * SIZE
	bdnz	LL(16)
	.align 4

LL(19):
	addic.	J,  J,  -1
	bgt	LL(10)
	b	LL(999)
	.align 4

LL(20):
	mr	CO1, C
	add	C,  C, LDC
	addi	PRE, 0, 16 * SIZE

	srawi.	r0,  M,  4
	mtspr	CTR, r0
	ble	LL(25)
	.align 4

LL(22):
	LFD	f0,    0 * SIZE(CO1)
	LFD	f1,    1 * SIZE(CO1)
	LFD	f2,    2 * SIZE(CO1)
	LFD	f3,    3 * SIZE(CO1)
	LFD	f4,    4 * SIZE(CO1)
	LFD	f5,    5 * SIZE(CO1)
	LFD	f6,    6 * SIZE(CO1)
	LFD	f7,    7 * SIZE(CO1)

	LFD	f8,    8 * SIZE(CO1)
	LFD	f9,    9 * SIZE(CO1)
	LFD	f10,  10 * SIZE(CO1)
	LFD	f11,  11 * SIZE(CO1)
	LFD	f12,  12 * SIZE(CO1)
	LFD	f13,  13 * SIZE(CO1)
	LFD	f14,  14 * SIZE(CO1)
	LFD	f15,  15 * SIZE(CO1)

	FMUL	f0,   ALPHA, f0
	FMUL	f1,   ALPHA, f1
	FMUL	f2,   ALPHA, f2
	FMUL	f3,   ALPHA, f3
	FMUL	f4,   ALPHA, f4
	FMUL	f5,   ALPHA, f5
	FMUL	f6,   ALPHA, f6
	FMUL	f7,   ALPHA, f7

	FMUL	f8,   ALPHA, f8
	FMUL	f9,   ALPHA, f9
	FMUL	f10,  ALPHA, f10
	FMUL	f11,  ALPHA, f11
	FMUL	f12,  ALPHA, f12
	FMUL	f13,  ALPHA, f13
	FMUL	f14,  ALPHA, f14
	FMUL	f15,  ALPHA, f15

	STFD	f0,    0 * SIZE(CO1)
	STFD	f1,    1 * SIZE(CO1)
	STFD	f2,    2 * SIZE(CO1)
	STFD	f3,    3 * SIZE(CO1)
	STFD	f4,    4 * SIZE(CO1)
	STFD	f5,    5 * SIZE(CO1)
	STFD	f6,    6 * SIZE(CO1)
	STFD	f7,    7 * SIZE(CO1)

	STFD	f8,    8 * SIZE(CO1)
	STFD	f9,    9 * SIZE(CO1)
	STFD	f10,  10 * SIZE(CO1)
	STFD	f11,  11 * SIZE(CO1)
	STFD	f12,  12 * SIZE(CO1)
	STFD	f13,  13 * SIZE(CO1)
	STFD	f14,  14 * SIZE(CO1)
	STFD	f15,  15 * SIZE(CO1)

	addi	CO1, CO1,  16 * SIZE
	dcbtst	PRE, CO1
	bdnz	LL(22)
	.align 4
	
LL(25):
	andi.	r0,  M,  15
	mtspr	CTR, r0
	ble	LL(29)
	.align 4

LL(26):
	LFD	f0,  0 * SIZE(CO1)
	FMUL	f0, f0, ALPHA
	STFD	f0,  0 * SIZE(CO1)
	addi	CO1, CO1, 1 * SIZE
	bdnz	LL(26)
	.align 4

LL(29):
	addic.	J,  J,  -1
	bgt	LL(20)
	.align 4

LL(999):
	li	r3, 0

	lfd	f14,    0(SP)
	lfd	f15,    8(SP)
	lfd	f31,   16(SP)
	addi	SP, SP, STACKSIZE

	blr
	EPILOGUE
