added optimized blas level1 copy kernels

kernel/arm/ccopy_vfpv3.S

@@ -0,0 +1,222 @@
+/***************************************************************************
+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.
+*****************************************************************************/
+
+/**************************************************************************************
+* 2013/11/07 Saar
+* 	 BLASTEST 		: OK
+* 	 CTEST			: OK
+* 	 TEST			: OK
+*
+**************************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define STACKSIZE 256
+
+#define	N	r0
+#define	X	r1
+#define	INC_X	r2
+#define	OLD_Y	r3
+
+
+/******************************************************
+* [fp, #-128] - [fp, #-64] is reserved
+* for store and restore of floating point
+* registers
+*******************************************************/
+
+#define OLD_INC_Y	[fp, #4 ]
+
+#define I	r5
+#define Y	r6
+#define INC_Y	r7
+
+#define X_PRE	256
+
+/**************************************************************************************
+* Macro definitions
+**************************************************************************************/
+
+.macro COPY_F4
+
+	pld	[ X, #X_PRE  ]
+	fldmias	X!, { s0 - s7 }
+	fstmias	Y!, { s0 - s7 }
+
+.endm
+
+.macro COPY_F1
+
+	fldmias	X!, { s0 - s1 }
+	fstmias	Y!, { s0 - s1 }
+
+.endm
+
+
+/*************************************************************************************************************************/
+
+.macro COPY_S4
+
+	nop
+	fldmias	X, { s0 - s1 }
+	fstmias	Y, { s0 - s1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s2 - s3 }
+	fstmias	Y, { s2 - s3 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s0 - s1 }
+	fstmias	Y, { s0 - s1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s2 - s3 }
+	fstmias	Y, { s2 - s3 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+.macro COPY_S1
+
+	fldmias	X, { s0 - s1 }
+	fstmias	Y, { s0 - s1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+
+/**************************************************************************************
+* End of macro definitions
+**************************************************************************************/
+
+	PROLOGUE
+
+	.align 5
+
+	push	{r4 - r9, fp}
+	add	fp, sp, #24
+	sub	sp, sp, #STACKSIZE				// reserve stack
+
+	sub	r4, fp, #128
+	vstm	r4, { s8 - s15} 				// store floating point registers
+
+	mov	Y, OLD_Y
+	ldr	INC_Y, OLD_INC_Y
+	
+	cmp	N, #0
+	ble	ccopy_kernel_L999
+
+	cmp	INC_X, #0
+	beq	ccopy_kernel_L999
+
+	cmp	INC_Y, #0
+	beq	ccopy_kernel_L999
+
+	cmp	INC_X, #1
+	bne	ccopy_kernel_S_BEGIN
+
+	cmp	INC_Y, #1
+	bne	ccopy_kernel_S_BEGIN
+
+ccopy_kernel_F_BEGIN:
+
+	asrs	I, N, #2					// I = N / 4
+	ble	ccopy_kernel_F1
+
+ccopy_kernel_F4:
+
+	COPY_F4
+
+	subs	I, I, #1
+	bne	ccopy_kernel_F4
+
+ccopy_kernel_F1:
+
+	ands	I, N, #3
+	ble	ccopy_kernel_L999
+
+ccopy_kernel_F10:
+
+	COPY_F1
+
+	subs    I, I, #1
+        bne     ccopy_kernel_F10
+
+	b	ccopy_kernel_L999
+
+ccopy_kernel_S_BEGIN:
+
+	lsl	INC_X, INC_X, #3				// INC_X * SIZE * 2
+	lsl	INC_Y, INC_Y, #3				// INC_Y * SIZE * 2
+
+	asrs	I, N, #2					// I = N / 4
+	ble	ccopy_kernel_S1
+
+ccopy_kernel_S4:
+
+	COPY_S4
+
+	subs	I, I, #1
+	bne	ccopy_kernel_S4
+
+ccopy_kernel_S1:
+
+	ands	I, N, #3
+	ble	ccopy_kernel_L999
+
+ccopy_kernel_S10:
+
+	COPY_S1
+
+	subs    I, I, #1
+        bne     ccopy_kernel_S10
+
+
+
+
+
+
+ccopy_kernel_L999:
+
+	sub	r3, fp, #128
+	vldm	r3, { s8 - s15}					// restore floating point registers
+
+	mov	r0, #0						// set return value
+	sub	sp, fp, #24
+	pop	{r4 - r9, fp}
+	bx	lr
+
+	EPILOGUE
+

kernel/arm/dcopy_vfpv3.S

@@ -0,0 +1,222 @@
+/***************************************************************************
+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.
+*****************************************************************************/
+
+/**************************************************************************************
+* 2013/11/07 Saar
+* 	 BLASTEST 		: OK
+* 	 CTEST			: OK
+* 	 TEST			: OK
+*
+**************************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define STACKSIZE 256
+
+#define	N	r0
+#define	X	r1
+#define	INC_X	r2
+#define	OLD_Y	r3
+
+
+/******************************************************
+* [fp, #-128] - [fp, #-64] is reserved
+* for store and restore of floating point
+* registers
+*******************************************************/
+
+#define OLD_INC_Y	[fp, #4 ]
+
+#define I	r5
+#define Y	r6
+#define INC_Y	r7
+
+#define X_PRE	256
+
+/**************************************************************************************
+* Macro definitions
+**************************************************************************************/
+
+.macro COPY_F4
+
+	pld	[ X, #X_PRE  ]
+	fldmiad	X!, { d0 - d3 }
+	fstmiad	Y!, { d0 - d3 }
+
+.endm
+
+.macro COPY_F1
+
+	fldmiad	X!, { d0 }
+	fstmiad	Y!, { d0 }
+
+.endm
+
+
+/*************************************************************************************************************************/
+
+.macro COPY_S4
+
+	nop
+	fldmiad	X, { d0 }
+	fstmiad	Y, { d0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d1 }
+	fstmiad	Y, { d1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d0 }
+	fstmiad	Y, { d0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d1 }
+	fstmiad	Y, { d1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+.macro COPY_S1
+
+	fldmiad	X, { d0 }
+	fstmiad	Y, { d0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+
+/**************************************************************************************
+* End of macro definitions
+**************************************************************************************/
+
+	PROLOGUE
+
+	.align 5
+
+	push	{r4 - r9, fp}
+	add	fp, sp, #24
+	sub	sp, sp, #STACKSIZE				// reserve stack
+
+	sub	r4, fp, #128
+	vstm	r4, { d8 - d15} 				// store floating point registers
+
+	mov	Y, OLD_Y
+	ldr	INC_Y, OLD_INC_Y
+	
+	cmp	N, #0
+	ble	dcopy_kernel_L999
+
+	cmp	INC_X, #0
+	beq	dcopy_kernel_L999
+
+	cmp	INC_Y, #0
+	beq	dcopy_kernel_L999
+
+	cmp	INC_X, #1
+	bne	dcopy_kernel_S_BEGIN
+
+	cmp	INC_Y, #1
+	bne	dcopy_kernel_S_BEGIN
+
+dcopy_kernel_F_BEGIN:
+
+	asrs	I, N, #2					// I = N / 4
+	ble	dcopy_kernel_F1
+
+dcopy_kernel_F4:
+
+	COPY_F4
+
+	subs	I, I, #1
+	bne	dcopy_kernel_F4
+
+dcopy_kernel_F1:
+
+	ands	I, N, #3
+	ble	dcopy_kernel_L999
+
+dcopy_kernel_F10:
+
+	COPY_F1
+
+	subs    I, I, #1
+        bne     dcopy_kernel_F10
+
+	b	dcopy_kernel_L999
+
+dcopy_kernel_S_BEGIN:
+
+	lsl	INC_X, INC_X, #3				// INC_X * SIZE
+	lsl	INC_Y, INC_Y, #3				// INC_Y * SIZE
+
+	asrs	I, N, #2					// I = N / 4
+	ble	dcopy_kernel_S1
+
+dcopy_kernel_S4:
+
+	COPY_S4
+
+	subs	I, I, #1
+	bne	dcopy_kernel_S4
+
+dcopy_kernel_S1:
+
+	ands	I, N, #3
+	ble	dcopy_kernel_L999
+
+dcopy_kernel_S10:
+
+	COPY_S1
+
+	subs    I, I, #1
+        bne     dcopy_kernel_S10
+
+
+
+
+
+
+dcopy_kernel_L999:
+
+	sub	r3, fp, #128
+	vldm	r3, { d8 - d15}					// restore floating point registers
+
+	mov	r0, #0						// set return value
+	sub	sp, fp, #24
+	pop	{r4 - r9, fp}
+	bx	lr
+
+	EPILOGUE
+

kernel/arm/scopy_vfpv3.S

@@ -0,0 +1,224 @@
+/***************************************************************************
+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.
+*****************************************************************************/
+
+/**************************************************************************************
+* 2013/11/07 Saar
+* 	 BLASTEST 		: OK
+* 	 CTEST			: OK
+* 	 TEST			: OK
+*
+**************************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define STACKSIZE 256
+
+#define	N	r0
+#define	X	r1
+#define	INC_X	r2
+#define	OLD_Y	r3
+
+
+/******************************************************
+* [fp, #-128] - [fp, #-64] is reserved
+* for store and restore of floating point
+* registers
+*******************************************************/
+
+#define OLD_INC_Y	[fp, #4 ]
+
+#define I	r5
+#define Y	r6
+#define INC_Y	r7
+
+#define X_PRE	256
+
+/**************************************************************************************
+* Macro definitions
+**************************************************************************************/
+
+.macro COPY_F8
+
+	pld	[ X, #X_PRE  ]
+	fldmias	X!, { s0 - s3 }
+	fldmias	X!, { s4 - s7 }
+	fstmias	Y!, { s0 - s3 }
+	fstmias	Y!, { s4 - s7 }
+
+.endm
+
+.macro COPY_F1
+
+	fldmias	X!, { s0 }
+	fstmias	Y!, { s0 }
+
+.endm
+
+
+/*************************************************************************************************************************/
+
+.macro COPY_S4
+
+	nop
+	fldmias	X, { s0 }
+	fstmias	Y, { s0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s1 }
+	fstmias	Y, { s1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s0 }
+	fstmias	Y, { s0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmias	X, { s1 }
+	fstmias	Y, { s1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+.macro COPY_S1
+
+	fldmias	X, { s0 }
+	fstmias	Y, { s0 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+
+/**************************************************************************************
+* End of macro definitions
+**************************************************************************************/
+
+	PROLOGUE
+
+	.align 5
+
+	push	{r4 - r9, fp}
+	add	fp, sp, #24
+	sub	sp, sp, #STACKSIZE				// reserve stack
+
+	sub	r4, fp, #128
+	vstm	r4, { s8 - s15} 				// store floating point registers
+
+	mov	Y, OLD_Y
+	ldr	INC_Y, OLD_INC_Y
+	
+	cmp	N, #0
+	ble	scopy_kernel_L999
+
+	cmp	INC_X, #0
+	beq	scopy_kernel_L999
+
+	cmp	INC_Y, #0
+	beq	scopy_kernel_L999
+
+	cmp	INC_X, #1
+	bne	scopy_kernel_S_BEGIN
+
+	cmp	INC_Y, #1
+	bne	scopy_kernel_S_BEGIN
+
+scopy_kernel_F_BEGIN:
+
+	asrs	I, N, #3					// I = N / 8
+	ble	scopy_kernel_F1
+
+scopy_kernel_F8:
+
+	COPY_F8
+
+	subs	I, I, #1
+	bne	scopy_kernel_F8
+
+scopy_kernel_F1:
+
+	ands	I, N, #7
+	ble	scopy_kernel_L999
+
+scopy_kernel_F10:
+
+	COPY_F1
+
+	subs    I, I, #1
+        bne     scopy_kernel_F10
+
+	b	scopy_kernel_L999
+
+scopy_kernel_S_BEGIN:
+
+	lsl	INC_X, INC_X, #2				// INC_X * SIZE
+	lsl	INC_Y, INC_Y, #2				// INC_Y * SIZE
+
+	asrs	I, N, #2					// I = N / 4
+	ble	scopy_kernel_S1
+
+scopy_kernel_S4:
+
+	COPY_S4
+
+	subs	I, I, #1
+	bne	scopy_kernel_S4
+
+scopy_kernel_S1:
+
+	ands	I, N, #3
+	ble	scopy_kernel_L999
+
+scopy_kernel_S10:
+
+	COPY_S1
+
+	subs    I, I, #1
+        bne     scopy_kernel_S10
+
+
+
+
+
+
+scopy_kernel_L999:
+
+	sub	r3, fp, #128
+	vldm	r3, { s8 - s15}					// restore floating point registers
+
+	mov	r0, #0						// set return value
+	sub	sp, fp, #24
+	pop	{r4 - r9, fp}
+	bx	lr
+
+	EPILOGUE
+

kernel/arm/zcopy_vfpv3.S

@@ -0,0 +1,223 @@
+/***************************************************************************
+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.
+*****************************************************************************/
+
+/**************************************************************************************
+* 2013/11/07 Saar
+* 	 BLASTEST 		: OK
+* 	 CTEST			: OK
+* 	 TEST			: OK
+*
+**************************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define STACKSIZE 256
+
+#define	N	r0
+#define	X	r1
+#define	INC_X	r2
+#define	OLD_Y	r3
+
+
+/******************************************************
+* [fp, #-128] - [fp, #-64] is reserved
+* for store and restore of floating point
+* registers
+*******************************************************/
+
+#define OLD_INC_Y	[fp, #4 ]
+
+#define I	r5
+#define Y	r6
+#define INC_Y	r7
+
+#define X_PRE	256
+
+/**************************************************************************************
+* Macro definitions
+**************************************************************************************/
+
+.macro COPY_F4
+
+	pld	[ X, #X_PRE  ]
+	pld	[ X, #X_PRE+32  ]
+	fldmiad	X!, { d0 - d7 }
+	fstmiad	Y!, { d0 - d7 }
+
+.endm
+
+.macro COPY_F1
+
+	fldmiad	X!, { d0 - d1 }
+	fstmiad	Y!, { d0 - d1 }
+
+.endm
+
+
+/*************************************************************************************************************************/
+
+.macro COPY_S4
+
+	nop
+	fldmiad	X, { d0 - d1 }
+	fstmiad	Y, { d0 - d1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d2 - d3 }
+	fstmiad	Y, { d2 - d3 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d0 - d1 }
+	fstmiad	Y, { d0 - d1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+	fldmiad	X, { d2 - d3 }
+	fstmiad	Y, { d2 - d3 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+.macro COPY_S1
+
+	fldmiad	X, { d0 - d1 }
+	fstmiad	Y, { d0 - d1 }
+	add	X, X, INC_X
+	add	Y, Y, INC_Y
+
+.endm
+
+
+
+/**************************************************************************************
+* End of macro definitions
+**************************************************************************************/
+
+	PROLOGUE
+
+	.align 5
+
+	push	{r4 - r9, fp}
+	add	fp, sp, #24
+	sub	sp, sp, #STACKSIZE				// reserve stack
+
+	sub	r4, fp, #128
+	vstm	r4, { d8 - d15} 				// store floating point registers
+
+	mov	Y, OLD_Y
+	ldr	INC_Y, OLD_INC_Y
+	
+	cmp	N, #0
+	ble	zcopy_kernel_L999
+
+	cmp	INC_X, #0
+	beq	zcopy_kernel_L999
+
+	cmp	INC_Y, #0
+	beq	zcopy_kernel_L999
+
+	cmp	INC_X, #1
+	bne	zcopy_kernel_S_BEGIN
+
+	cmp	INC_Y, #1
+	bne	zcopy_kernel_S_BEGIN
+
+zcopy_kernel_F_BEGIN:
+
+	asrs	I, N, #2					// I = N / 4
+	ble	zcopy_kernel_F1
+
+zcopy_kernel_F4:
+
+	COPY_F4
+
+	subs	I, I, #1
+	bne	zcopy_kernel_F4
+
+zcopy_kernel_F1:
+
+	ands	I, N, #3
+	ble	zcopy_kernel_L999
+
+zcopy_kernel_F10:
+
+	COPY_F1
+
+	subs    I, I, #1
+        bne     zcopy_kernel_F10
+
+	b	zcopy_kernel_L999
+
+zcopy_kernel_S_BEGIN:
+
+	lsl	INC_X, INC_X, #4				// INC_X * SIZE * 2
+	lsl	INC_Y, INC_Y, #4				// INC_Y * SIZE * 2
+
+	asrs	I, N, #2					// I = N / 4
+	ble	zcopy_kernel_S1
+
+zcopy_kernel_S4:
+
+	COPY_S4
+
+	subs	I, I, #1
+	bne	zcopy_kernel_S4
+
+zcopy_kernel_S1:
+
+	ands	I, N, #3
+	ble	zcopy_kernel_L999
+
+zcopy_kernel_S10:
+
+	COPY_S1
+
+	subs    I, I, #1
+        bne     zcopy_kernel_S10
+
+
+
+
+
+
+zcopy_kernel_L999:
+
+	sub	r3, fp, #128
+	vldm	r3, { d8 - d15}					// restore floating point registers
+
+	mov	r0, #0						// set return value
+	sub	sp, fp, #24
+	pop	{r4 - r9, fp}
+	bx	lr
+
+	EPILOGUE
+