226 lines
4.5 KiB
ArmAsm
226 lines
4.5 KiB
ArmAsm
/***************************************************************************
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Copyright (c) 2013, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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/**************************************************************************************
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* 2013/11/24 Saar
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* BLASTEST : OK
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* CTEST : OK
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* TEST : OK
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*
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**************************************************************************************/
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#define ASSEMBLER
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#include "common.h"
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#define STACKSIZE 256
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#define OLD_M r0
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#define OLD_N r1
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#define OLD_A r2
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#define OLD_LDA r3
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#define B [fp, #4 ]
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#define M r0
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#define N r1
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#define A r2
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#define BO r5
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#define AO1 r6
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#define AO2 r7
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#define LDA r8
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#define I r3
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#define J r12
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#define A_PRE 256
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/**************************************************************************************
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* Macro definitions
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**************************************************************************************/
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.macro COPY2x2
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flds s0 , [ AO1, #0 ]
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flds s2 , [ AO1, #4 ]
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flds s1 , [ AO2, #0 ]
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flds s3 , [ AO2, #4 ]
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add AO1, AO1, #8
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vstmia.f32 BO!, { s0 - s3 }
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add AO2, AO2, #8
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.endm
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.macro COPY1x2
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flds s0 , [ AO1, #0 ]
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flds s1 , [ AO2, #0 ]
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add AO1, AO1, #4
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vstmia.f32 BO!, { s0 - s1 }
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add AO2, AO2, #4
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.endm
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.macro COPY2x1
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flds s0 , [ AO1, #0 ]
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flds s1 , [ AO1, #4 ]
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vstmia.f32 BO!, { s0 - s1 }
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add AO1, AO1, #8
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.endm
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.macro COPY1x1
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flds s0 , [ AO1, #0 ]
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vstmia.f32 BO!, { s0 }
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add AO1, AO1, #4
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.endm
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/**************************************************************************************
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* End of macro definitions
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**************************************************************************************/
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PROLOGUE
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.align 5
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push {r4 - r9, fp}
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add fp, sp, #24
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lsl LDA, OLD_LDA, #2 // lda = lda * 4
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ldr BO, B
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/*********************************************************************************************/
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sgemm_ncopy_L2_BEGIN:
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asrs J, N, #1 // J = N / 2
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ble sgemm_ncopy_L1_BEGIN
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sgemm_ncopy_L2_M2_BEGIN:
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mov AO1, A // AO1 = A
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add AO2, AO1, LDA
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add A , AO2, LDA // A = A + 2 * LDA
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asrs I, M, #1 // I = M / 2
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ble sgemm_ncopy_L2_M2_40
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sgemm_ncopy_L2_M2_20:
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COPY2x2
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subs I , I , #1
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bne sgemm_ncopy_L2_M2_20
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sgemm_ncopy_L2_M2_40:
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ands I, M , #1
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ble sgemm_ncopy_L2_M2_END
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sgemm_ncopy_L2_M2_60:
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COPY1x2
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subs I , I , #1
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bne sgemm_ncopy_L2_M2_60
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sgemm_ncopy_L2_M2_END:
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subs J , J, #1 // j--
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bne sgemm_ncopy_L2_M2_BEGIN
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/*********************************************************************************************/
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sgemm_ncopy_L1_BEGIN:
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tst N, #1
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ble sgemm_ncopy_L999
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sgemm_ncopy_L1_M2_BEGIN:
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mov AO1, A // AO1 = A
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add A , AO1, LDA // A = A + 1 * LDA
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asrs I, M, #1 // I = M / 2
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ble sgemm_ncopy_L1_M2_40
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sgemm_ncopy_L1_M2_20:
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COPY2x1
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subs I , I , #1
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bne sgemm_ncopy_L1_M2_20
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sgemm_ncopy_L1_M2_40:
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ands I, M , #1
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ble sgemm_ncopy_L1_M2_END
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sgemm_ncopy_L1_M2_60:
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COPY1x1
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subs I , I , #1
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bne sgemm_ncopy_L1_M2_60
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sgemm_ncopy_L1_M2_END:
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sgemm_ncopy_L999:
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movs r0, #0 // set return value
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sub sp, fp, #24
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pop {r4 - r9, fp}
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bx lr
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EPILOGUE
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