OpenBLAS/kernel/arm/dtrmm_kernel_4x2_vfp.S

/***************************************************************************
Copyright (c) 2013, The OpenBLAS Project
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.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OPENBLAS PROJECT 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.
*****************************************************************************/

/**************************************************************************************
* 2013/11/28 Saar
* 	 BLASTEST 		: OK
* 	 CTEST			: OK
* 	 TEST			: OK
*
**************************************************************************************/

#define ASSEMBLER
#include "common.h"

#define STACKSIZE 252

#define	OLD_M	r0
#define	OLD_N	r1
#define	OLD_K	r2
#define	OLD_A	r3
#define OLD_ALPHA d0

/******************************************************
* [fp, #-128] - [fp, #-64] is reserved
* for store and restore of floating point
* registers
*******************************************************/

#define KK      [fp, #-240 ]
#define KKK     [fp, #-244]
#define C	[fp, #-248 ]
#define LDC	[fp, #-252 ]
#define M	[fp, #-256 ]
#define N	[fp, #-260 ]
#define K	[fp, #-264 ]
#define A	[fp, #-268 ]

#define ALPHA	[fp, #-276 ]

#define B	[fp, #4 ]
#define OLD_C	[fp, #8 ]
#define OLD_LDC	[fp, #12 ]
#define OFFSET  [fp, #16 ]

#define I	r0
#define J	r1
#define L	r2

#define	AO	r5
#define	BO	r6

#define	CO1	r8
#define	CO2	r9

#define K1	r7
#define BC	r12

#define A_PRE	64
#define B_PRE	64
#define C_PRE	64


/**************************************************************************************
* Macro definitions
**************************************************************************************/

.macro INIT4x2

	vsub.f64		d8 , d8 , d8
	vmov.f64		d9, d8
	vmov.f64		d10, d8
	vmov.f64		d11, d8
	vmov.f64		d12, d8
	vmov.f64		d13, d8
	vmov.f64		d14, d8
	vmov.f64		d15, d8

.endm



.macro KERNEL4x2_SUB

	fldd	d4 , [ BO ]
	fldd	d0 , [ AO ]

	fldd	d1 , [ AO, #8 ]
	pld	[ AO , #A_PRE ]

	fmacd	d8  , d0,  d4
	fldd	d2 , [ AO, #16 ]
	fmacd	d9  , d1,  d4
	fldd	d3 , [ AO, #24 ]
	fmacd	d10  , d2,  d4
	fldd	d5 , [ BO, #8 ]
	fmacd	d11  , d3,  d4

	fmacd	d12  , d0,  d5
	fmacd	d13  , d1,  d5
	add	AO , AO, #32
	fmacd	d14  , d2,  d5
	add	BO , BO, #16
	fmacd	d15  , d3,  d5


.endm

.macro SAVE4x2

	ldr	r3  , LDC
	add	CO2 , CO1, r3

	fldd		d0, ALPHA

	fmuld	d4 , d0 , d8
	fmuld	d5 , d0 , d9
	fmuld	d6 , d0 , d10
	fmuld	d7 , d0 , d11

	fstd	d4 , [CO1]
	fstd	d5 , [CO1, #8 ]
	fstd	d6 , [CO1, #16 ]
	fstd	d7 , [CO1, #24 ]

	fmuld	d4 , d0 , d12
	fmuld	d5 , d0 , d13
	fmuld	d6 , d0 , d14
	fmuld	d7 , d0 , d15

	fstd	d4 , [CO2]
	fstd	d5 , [CO2, #8 ]
	fstd	d6 , [CO2, #16 ]
	fstd	d7 , [CO2, #24 ]

	add	CO1, CO1, #32

.endm


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

.macro INIT2x2

	vsub.f64		d8 , d8 , d8
	vmov.f64		d9, d8
	vmov.f64		d12, d8
	vmov.f64		d13, d8

.endm

.macro KERNEL2x2_SUB

	fldd	d4 , [ BO ]
	fldd	d5 , [ BO, #8 ]

	fldd	d0 , [ AO ]
	fldd	d1 , [ AO, #8 ]

	fmacd	d8  , d0,  d4
	fmacd	d9  , d1,  d4

	fmacd	d12  , d0,  d5
	fmacd	d13  , d1,  d5

	add	AO , AO, #16
	add	BO , BO, #16

.endm

.macro SAVE2x2

	ldr	r3  , LDC
	add	CO2 , CO1, r3

	fldd		d0, ALPHA


	fmuld	d4 , d0 , d8
	fmuld	d5 , d0 , d9

	fstd	d4 , [CO1]
	fstd	d5 , [CO1, #8 ]

	fmuld	d4 , d0 , d12
	fmuld	d5 , d0 , d13

	fstd	d4 , [CO2]
	fstd	d5 , [CO2, #8 ]

	add	CO1, CO1, #16

.endm


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

.macro INIT1x2

	vsub.f64		d8 , d8 , d8
	vmov.f64		d12, d8

.endm

.macro KERNEL1x2_SUB

	fldd	d4 , [ BO ]
	fldd	d5 , [ BO, #8 ]

	fldd	d0 , [ AO ]

	fmacd	d8  , d0,  d4

	fmacd	d12  , d0,  d5

	add	AO , AO, #8
	add	BO , BO, #16

.endm

.macro SAVE1x2

	ldr	r3  , LDC
	add	CO2 , CO1, r3

	fldd		d0, ALPHA


	fmuld	d4 , d0 , d8

	fstd	d4 , [CO1]


	fmuld	d4 , d0 , d12

	fstd	d4 , [CO2]

	add	CO1, CO1, #8

.endm



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

.macro INIT4x1

	vsub.f64		d8 , d8 , d8
	vmov.f64		d9, d8
	vmov.f64		d10, d8
	vmov.f64		d11, d8

.endm



.macro KERNEL4x1_SUB

	fldd	d4 , [ BO ]

	fldd	d0 , [ AO ]
	fldd	d1 , [ AO, #8 ]
	fldd	d2 , [ AO, #16 ]
	fldd	d3 , [ AO, #24 ]

	fmacd	d8  , d0,  d4
	fmacd	d9  , d1,  d4
	fmacd	d10 , d2,  d4
	fmacd	d11 , d3,  d4

	add	AO , AO, #32
	add	BO , BO, #8

.endm

.macro SAVE4x1

	fldd		d0, ALPHA

	fmuld	d4 , d0 , d8
	fmuld	d5 , d0 , d9
	fmuld	d6 , d0 , d10
	fmuld	d7 , d0 , d11

	fstd	d4 , [CO1]
	fstd	d5 , [CO1, #8 ]
	fstd	d6 , [CO1, #16 ]
	fstd	d7 , [CO1, #24 ]

	add	CO1, CO1, #32

.endm

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

.macro INIT2x1

	vsub.f64		d8 , d8 , d8
	vmov.f64		d9 , d8

.endm

.macro KERNEL2x1_SUB

	fldd	d4 , [ BO ]

	fldd	d0 , [ AO ]
	fldd	d1 , [ AO, #8 ]

	fmacd	d8  , d0,  d4
	fmacd	d9  , d1,  d4

	add	AO , AO, #16
	add	BO , BO, #8

.endm

.macro SAVE2x1

	fldd		d0, ALPHA

	fmuld	d4 , d0 , d8
	fmuld	d5 , d0 , d9

	fstd	d4 , [CO1]
	fstd	d5 , [CO1, #8 ]

	add	CO1, CO1, #16

.endm


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

.macro INIT1x1

	vsub.f64		d8 , d8 , d8

.endm

.macro KERNEL1x1_SUB

	fldd	d4 , [ BO ]

	fldd	d0 , [ AO ]

	fmacd	d8  , d0,  d4

	add	AO , AO, #8
	add	BO , BO, #8

.endm

.macro SAVE1x1

	fldd		d0, ALPHA

	fmuld	d4 , d0 , d8

	fstd	d4 , [CO1]

	add	CO1, CO1, #8

.endm


/**************************************************************************************
* End of macro definitions
**************************************************************************************/


	PROLOGUE

	.align 5

	push	{r4 - r9, fp}
	add	fp, sp, #24
	sub	sp, sp, #STACKSIZE				// reserve stack

	str	OLD_M, M
	str	OLD_N, N
	str	OLD_K, K
	str	OLD_A, A
	vstr	OLD_ALPHA, ALPHA

	sub	r3, fp, #128
	vstm	r3, { d8 - d15} 				// store floating point registers

	ldr	r3, OLD_LDC
	lsl	r3, r3, #3					// ldc = ldc * 8
	str	r3, LDC

	ldr	r3, OLD_C
	str	r3, C

	ldr	BC, B

        ldr     r3, OFFSET
#ifndef LEFT
        neg     r3 , r3
#endif
        str     r3 , KK

	ldr	J, N
	asrs	J, J, #1					// J = J / 2
	ble	_L1_BEGIN

_L2_BEGIN:

	ldr	CO1, C						// CO1 = C
	ldr	r4 , LDC
	lsl	r4 , r4 , #1					// LDC * 2
	add	r3 , r4, CO1
	str	r3 , C						// store C

#if defined(LEFT)
        ldr     r3 , OFFSET
        str     r3 , KK
#endif

	ldr	AO, A						// AO = A


_L2_M4_BEGIN:

	ldr	I, M
	asrs	I, I, #2					// I = I / 4
	ble	_L2_M2_BEGIN

_L2_M4_20:

	INIT4x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #4                                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #5                                    // 4 double values
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #4        // number of values in AO
#else
        add     L , L , #2        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L2_M4_40
	.align 5

_L2_M4_22:

	pld	[ BO , #B_PRE ]
	KERNEL4x2_SUB
	KERNEL4x2_SUB
	pld	[ BO , #B_PRE ]
	KERNEL4x2_SUB
	KERNEL4x2_SUB

	pld	[ BO , #B_PRE ]
	KERNEL4x2_SUB
	KERNEL4x2_SUB
	pld	[ BO , #B_PRE ]
	KERNEL4x2_SUB
	KERNEL4x2_SUB

	subs	L, L, #1
	bgt	_L2_M4_22


_L2_M4_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L2_M4_100

_L2_M4_42:

	KERNEL4x2_SUB

	subs	L, L, #1
	bgt	_L2_M4_42

_L2_M4_100:

	SAVE4x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))
        ldr     r3 , K
        ldr     r4 , KKK
        sub     r3 , r3 , r4
        lsls    r4 , r3 , #4                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #5                    // 4 double values
        add     AO , AO , r4
#endif

#if defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #4                    // number of values in AO
        str     r3 , KK
#endif



_L2_M4_END:

	subs	I, I, #1
	bgt	_L2_M4_20


_L2_M2_BEGIN:

	ldr	I, M
	tst	I , #3
	ble	_L2_END

	tst	I, #2					// I = I / 2
	ble	_L2_M1_BEGIN

_L2_M2_20:

	INIT2x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #4                                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #4                                    // 2 double values
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #2        // number of values in AO
#else
        add     L , L , #2        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L2_M2_40

_L2_M2_22:

	KERNEL2x2_SUB
	KERNEL2x2_SUB
	KERNEL2x2_SUB
	KERNEL2x2_SUB

	KERNEL2x2_SUB
	KERNEL2x2_SUB
	KERNEL2x2_SUB
	KERNEL2x2_SUB

	subs	L, L, #1
	bgt	_L2_M2_22


_L2_M2_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L2_M2_100

_L2_M2_42:

	KERNEL2x2_SUB

	subs	L, L, #1
	bgt	_L2_M2_42

_L2_M2_100:

	SAVE2x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))
        ldr     r3 , K
        ldr     r4 , KKK
        sub     r3 , r3 , r4
        lsls    r4 , r3 , #4                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #4                    // 2 double values
        add     AO , AO , r4
#endif

#if defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #2                    // number of values in AO
        str     r3 , KK
#endif



_L2_M2_END:


_L2_M1_BEGIN:

	tst	I, #1					// I = I % 2
	ble	_L2_END

_L2_M1_20:

	INIT1x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #4                                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #3                                    // 1 double value
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #1        // number of values in AO
#else
        add     L , L , #2        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L2_M1_40

_L2_M1_22:
	KERNEL1x2_SUB
	KERNEL1x2_SUB
	KERNEL1x2_SUB
	KERNEL1x2_SUB

	KERNEL1x2_SUB
	KERNEL1x2_SUB
	KERNEL1x2_SUB
	KERNEL1x2_SUB

	subs	L, L, #1
	bgt	_L2_M1_22


_L2_M1_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L2_M1_100

_L2_M1_42:

	KERNEL1x2_SUB

	subs	L, L, #1
	bgt	_L2_M1_42

_L2_M1_100:

	SAVE1x2

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))
        ldr     r3 , K
        ldr     r4 , KKK
        sub     r3 , r3 , r4
        lsls    r4 , r3 , #4                    // 2 double values
        add     BO , BO , r4
        lsls    r4 , r3 , #3                    // 1 double value
        add     AO , AO , r4
#endif

#if defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #1                    // number of values in AO
        str     r3 , KK
#endif




_L2_END:

	mov	r3, BC
	ldr	r4, K
	lsl	r4, r4, #4					// k * 2 * 8
	add	r3, r3, r4					// B = B + K * 2 * 8
	mov	BC, r3

#if !defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #2                                    // number of values in BO
        str     r3 , KK
#endif


	subs	J , #1						// j--
	bgt	_L2_BEGIN

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

_L1_BEGIN:

	ldr	J , N
	tst	J , #1
	ble	_L999


	ldr	CO1, C						// CO1 = C
	ldr	r4 , LDC
	add	r3 , r4, CO1
	str	r3 , C						// store C

#if defined(LEFT)
        ldr     r3 , OFFSET
        str     r3 , KK
#endif

	ldr	AO, A						// AO = A
        //pld     [AO , #A_PRE-96]
        //pld     [AO , #A_PRE-64]
        //pld     [AO , #A_PRE-32]



_L1_M4_BEGIN:

	ldr	I, M
	asrs	I, I, #2					// I = I / 4
	ble	_L1_M2_BEGIN

_L1_M4_20:

	INIT4x1

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #3                                    // 1 double value
        add     BO , BO , r4
        lsls    r4 , r3 , #5                                    // 4 double values
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #4        // number of values in AO
#else
        add     L , L , #1        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L1_M4_40
	.align 5

_L1_M4_22:
	KERNEL4x1_SUB
	KERNEL4x1_SUB
	KERNEL4x1_SUB
	KERNEL4x1_SUB

	KERNEL4x1_SUB
	KERNEL4x1_SUB
	KERNEL4x1_SUB
	KERNEL4x1_SUB

	subs	L, L, #1
	bgt	_L1_M4_22


_L1_M4_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L1_M4_100

_L1_M4_42:

	KERNEL4x1_SUB

	subs	L, L, #1
	bgt	_L1_M4_42

_L1_M4_100:

	SAVE4x1

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))
        ldr     r3 , K
        ldr     r4 , KKK
        sub     r3 , r3 , r4
        lsls    r4 , r3 , #3                    // 1 double value
        add     BO , BO , r4
        lsls    r4 , r3 , #5                    // 4 double values
        add     AO , AO , r4
#endif

#if defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #4                    // number of values in AO
        str     r3 , KK
#endif



_L1_M4_END:

	subs	I, I, #1
	bgt	_L1_M4_20


_L1_M2_BEGIN:

	ldr	I, M
	tst	I , #3
	ble	_L1_END

	tst	I, #2					// I = I / 2
	ble	_L1_M1_BEGIN

_L1_M2_20:

	INIT2x1

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #3                                    // 1 double value
        add     BO , BO , r4
        lsls    r4 , r3 , #4                                    // 2 double values
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #2        // number of values in AO
#else
        add     L , L , #1        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L1_M2_40

_L1_M2_22:

	KERNEL2x1_SUB
	KERNEL2x1_SUB
	KERNEL2x1_SUB
	KERNEL2x1_SUB

	KERNEL2x1_SUB
	KERNEL2x1_SUB
	KERNEL2x1_SUB
	KERNEL2x1_SUB

	subs	L, L, #1
	bgt	_L1_M2_22


_L1_M2_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L1_M2_100

_L1_M2_42:

	KERNEL2x1_SUB

	subs	L, L, #1
	bgt	_L1_M2_42

_L1_M2_100:

	SAVE2x1

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))
        ldr     r3 , K
        ldr     r4 , KKK
        sub     r3 , r3 , r4
        lsls    r4 , r3 , #3                    // 1 double value
        add     BO , BO , r4
        lsls    r4 , r3 , #4                    // 2 double values
        add     AO , AO , r4
#endif

#if defined(LEFT)
        ldr     r3 , KK
        add     r3 , r3 , #2                    // number of values in AO
        str     r3 , KK
#endif



_L1_M2_END:


_L1_M1_BEGIN:

	tst	I, #1					// I = I % 2
	ble	_L1_END

_L1_M1_20:

	INIT1x1

#if  (defined(LEFT) &&  defined(TRANSA)) || \
    (!defined(LEFT) && !defined(TRANSA))

        mov     BO, BC
#else
        mov     BO, BC
        ldr     r3 , KK
        lsls    r4 , r3 , #3                                    // 1 double value
        add     BO , BO , r4
        lsls    r4 , r3 , #3                                    // 1 double value
        add     AO , AO , r4

#endif

#ifndef TRMMKERNEL
        ldr     L , K
#elif (defined(LEFT) && !defined(TRANSA)) || (!defined(LEFT) && defined(TRANSA))
        ldr     L , K
        ldr     r3, KK
        sub     L , L, r3
        str     L , KKK
#else
        ldr     L , KK
#ifdef LEFT
        add     L , L , #1        // number of values in AO
#else
        add     L , L , #1        // number of values in BO
#endif
        str     L , KKK
#endif

	mov	K1, L
	asrs	L , K1, #3					// L = L / 8
	ble	_L1_M1_40

_L1_M1_22:
	KERNEL1x1_SUB
	KERNEL1x1_SUB
	KERNEL1x1_SUB
	KERNEL1x1_SUB

	KERNEL1x1_SUB
	KERNEL1x1_SUB
	KERNEL1x1_SUB
	KERNEL1x1_SUB

	subs	L, L, #1
	bgt	_L1_M1_22


_L1_M1_40:

	ands	L , K1, #7					// L = L % 8
	ble	_L1_M1_100

_L1_M1_42:

	KERNEL1x1_SUB

	subs	L, L, #1
	bgt	_L1_M1_42

_L1_M1_100:

	SAVE1x1


_L1_END:


_L999:

	sub	r3, fp, #128
	vldm	r3, { d8 - d15}					// restore floating point registers

	movs	r0, #0						// set return value
	sub	sp, fp, #24
	pop	{r4 - r9, fp}
	bx	lr

	EPILOGUE