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OpenBLAS/kernel/arm/scopy_vfp.S at develop · OpenMathLib/OpenBLAS · GitHub
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arm
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scopy_vfp.S
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OpenBLAS
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kernel
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arm
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scopy_vfp.S
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/
***************************************************************************
Copyright (c)
2013
,
The OpenBLAS Project
All rights reserved.
Redistribution
and
use
in
source
and
binary forms
,
with
or
without
modification
,
are permitted provided th
at
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
]
vldmia.f32 X!
,
{ s0
-
s3 }
vldmia.f32 X!
,
{ s4
-
s7 }
vstmia.f32 Y!
,
{ s0
-
s3 }
vstmia.f32 Y!
,
{ s4
-
s7 }
.endm
.macro COPY_F1
vldmia.f32 X!
,
{ s0 }
vstmia.f32 Y!
,
{ s0 }
.endm
/
*************************************************************************************************************************
/
.macro COPY_S4
nop
vldmia.f32 X
,
{ s0 }
vstmia.f32 Y
,
{ s0 }
add
X
,
X
,
INC_X
add
Y
,
Y
,
INC_Y
vldmia.f32 X
,
{ s1 }
vstmia.f32 Y
,
{ s1 }
add
X
,
X
,
INC_X
add
Y
,
Y
,
INC_Y
vldmia.f32 X
,
{ s0 }
vstmia.f32 Y
,
{ s0 }
add
X
,
X
,
INC_X
add
Y
,
Y
,
INC_Y
vldmia.f32 X
,
{ s1 }
vstmia.f32 Y
,
{ s1 }
add
X
,
X
,
INC_X
add
Y
,
Y
,
INC_Y
.endm
.macro COPY_S1
vldmia.f32 X
,
{ s0 }
vstmia.f32 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
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