/*************************************************************************** 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. *****************************************************************************/ /************************************************************************************** * 2013/11/06 Saar * BLASTEST : OK * CTEST : OK * TEST : OK * **************************************************************************************/ #define ASSEMBLER #include "common.h" #define STACKSIZE 256 #define OLD_M r0 #define OLD_N r1 #define OLD_A r2 #define OLD_LDA r3 /****************************************************** * [fp, #-128] - [fp, #-64] is reserved * for store and restore of floating point * registers *******************************************************/ #define B [fp, #4 ] #define A [fp, #-248 ] #define M r0 #define N r1 #define M4 r2 #define LDA r5 #define AO1 r6 #define BO1 r7 #define BO2 r8 #define BO3 r9 #define I r4 #define J r12 #define A_PRE 256 /************************************************************************************** * Macro definitions **************************************************************************************/ .macro COPY4x4_1 pld [ AO1, #A_PRE ] fldmias AO1, { s0 - s3 } add r3, AO1, LDA pld [ r3, #A_PRE ] fldmias r3, { s4 - s7 } add r3, r3, LDA pld [ r3, #A_PRE ] fldmias r3, { s8 - s11 } add r3, r3, LDA pld [ r3, #A_PRE ] fldmias r3, { s12 - s15 } fstmias BO1, { s0 - s15 } add AO1, AO1, #16 add BO1, BO1, M4 .endm .macro COPY4x4_2 fldmias AO1, { s0 - s3 } add r3, AO1, LDA fldmias r3, { s4 - s7 } add r3, r3, LDA fldmias r3, { s8 - s11 } add r3, r3, LDA fldmias r3, { s12 - s15 } fstmias BO1, { s0 - s15 } add AO1, AO1, #16 add BO1, BO1, M4 .endm .macro COPY2x4 fldmias AO1, { s0 - s1 } add r3, AO1, LDA fldmias r3, { s2 - s3 } add r3, r3, LDA fldmias r3, { s4 - s5 } add r3, r3, LDA fldmias r3, { s6 - s7 } fstmias BO2, { s0 - s7 } add AO1, AO1, #8 add BO2, BO2, #32 .endm .macro COPY1x4 fldmias AO1, { s0 } add r3, AO1, LDA fldmias r3, { s1 } add r3, r3, LDA fldmias r3, { s2 } add r3, r3, LDA fldmias r3, { s3 } fstmias BO3, { s0 - s3 } add AO1, AO1, #4 add BO3, BO3, #16 .endm /*************************************************************************************************************************/ .macro COPY4x2 fldmias AO1, { s0 - s3 } add r3, AO1, LDA fldmias r3, { s4 - s7 } fstmias BO1, { s0 - s7 } add AO1, AO1, #16 add BO1, BO1, M4 .endm .macro COPY2x2 fldmias AO1, { s0 - s1 } add r3, AO1, LDA fldmias r3, { s2 - s3 } fstmias BO2, { s0 - s3 } add AO1, AO1, #8 add BO2, BO2, #16 .endm .macro COPY1x2 fldmias AO1, { s0 } add r3, AO1, LDA fldmias r3, { s1 } fstmias BO3, { s0 - s1 } add AO1, AO1, #4 add BO3, BO3, #8 .endm /*************************************************************************************************************************/ .macro COPY4x1 fldmias AO1, { s0 - s3 } fstmias BO1, { s0 - s3 } add AO1, AO1, #16 add BO1, BO1, M4 .endm .macro COPY2x1 fldmias AO1, { s0 - s1 } fstmias BO2, { s0 - s1 } add AO1, AO1, #8 add BO2, BO2, #8 .endm .macro COPY1x1 fldmias AO1, { s0 } fstmias BO3, { s0 } add AO1, AO1, #4 add BO3, BO3, #4 .endm /************************************************************************************** * End of macro definitions **************************************************************************************/ PROLOGUE .align 5 push {r4 - r9, fp} add fp, sp, #24 sub sp, sp, #STACKSIZE // reserve stack str OLD_A, A // store A lsl LDA, OLD_LDA, #2 // lda = lda * SIZE sub r4, fp, #128 vstm r4, { s8 - s15} // store floating point registers lsl r4 , M, #2 // M * SIZE ldr r3, B and BO2 , N , #-4 and BO3 , N , #-2 mul BO2, BO2, r4 mul BO3, BO3, r4 add BO2 , BO2, r3 add BO3 , BO3, r3 lsl M4, M, #4 // M4 = M * 4 * SIZE sgemm_tcopy_L4_BEGIN: asrs J, M, #2 // J = N / 4 ble sgemm_tcopy_L2_BEGIN sgemm_tcopy_L4_M4_BEGIN: ldr AO1, A // AO1 = A lsl r3, LDA, #2 // r3 = 4 * LDA add r3, r3 , AO1 // A = A + 4 * LDA str r3, A // store A ldr BO1, B add r3, BO1, #64 // B = B + 16 * SIZE str r3, B asrs I, N, #2 // I = M / 4 ble sgemm_tcopy_L4_M4_40 sgemm_tcopy_L4_M4_20: COPY4x4_1 subs I , I , #1 ble sgemm_tcopy_L4_M4_40 COPY4x4_2 subs I , I , #1 bne sgemm_tcopy_L4_M4_20 sgemm_tcopy_L4_M4_40: tst N , #2 ble sgemm_tcopy_L4_M4_60 COPY2x4 sgemm_tcopy_L4_M4_60: tst N, #1 ble sgemm_tcopy_L4_M4_END COPY1x4 sgemm_tcopy_L4_M4_END: subs J , J, #1 // j-- bne sgemm_tcopy_L4_M4_BEGIN /*********************************************************************************************/ sgemm_tcopy_L2_BEGIN: tst M, #3 ble sgemm_tcopy_L999 tst M, #2 ble sgemm_tcopy_L1_BEGIN sgemm_tcopy_L2_M4_BEGIN: ldr AO1, A // AO1 = A lsl r3, LDA, #1 // r3 = 2 * LDA add r3, r3 , AO1 // A = A + 2 * LDA str r3, A // store A ldr BO1, B add r3, BO1, #32 // B = B + 8 * SIZE str r3, B asrs I, N, #2 // I = M / 4 ble sgemm_tcopy_L2_M4_40 sgemm_tcopy_L2_M4_20: COPY4x2 subs I , I , #1 bne sgemm_tcopy_L2_M4_20 sgemm_tcopy_L2_M4_40: tst N , #2 ble sgemm_tcopy_L2_M4_60 COPY2x2 sgemm_tcopy_L2_M4_60: tst N , #1 ble sgemm_tcopy_L2_M4_END COPY1x2 sgemm_tcopy_L2_M4_END: /*********************************************************************************************/ sgemm_tcopy_L1_BEGIN: tst M, #1 ble sgemm_tcopy_L999 sgemm_tcopy_L1_M4_BEGIN: ldr AO1, A // AO1 = A add r3, LDA , AO1 // A = A + 1 * LDA str r3, A // store A ldr BO1, B add r3, BO1, #16 // B = B + 4 * SIZE str r3, B asrs I, N, #2 // I = M / 4 ble sgemm_tcopy_L1_M4_40 sgemm_tcopy_L1_M4_20: COPY4x1 subs I , I , #1 bne sgemm_tcopy_L1_M4_20 sgemm_tcopy_L1_M4_40: tst N , #2 ble sgemm_tcopy_L1_M4_60 COPY2x1 sgemm_tcopy_L1_M4_60: tst N , #1 ble sgemm_tcopy_L1_M4_END COPY1x1 sgemm_tcopy_L1_M4_END: sgemm_tcopy_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