/*************************************************************************** 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. *****************************************************************************/ /************************************************************************************** * 2013/11/11 Saar * BLASTEST : OK * CTEST : OK (no test for dsdot) * TEST : OK (no test for dsdot) * * 2016/01/23 Saar * Bugfix for Refs #750 and #740 **************************************************************************************/ #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 512 /************************************************************************************** * Macro definitions **************************************************************************************/ #if defined(DSDOT) .macro KERNEL_F4 fldmias X!, { s14 } fldmias Y!, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 fldmias X!, { s14 } fldmias Y!, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 fldmias X!, { s14 } fldmias Y!, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 fldmias X!, { s14 } fldmias Y!, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 .endm .macro KERNEL_F1 fldmias X!, { s14 } fldmias Y!, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 .endm .macro KERNEL_S4 nop fldmias X, { s14 } fldmias Y, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 add X, X, INC_X add Y, Y, INC_Y fldmias X, { s14 } fldmias Y, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 add X, X, INC_X add Y, Y, INC_Y fldmias X, { s14 } fldmias Y, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 add X, X, INC_X add Y, Y, INC_Y fldmias X, { s14 } fldmias Y, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 add X, X, INC_X add Y, Y, INC_Y .endm .macro KERNEL_S1 fldmias X, { s14 } fldmias Y, { s15 } vmul.f32 s15, s14, s15 vcvt.f64.f32 d4, s15 vadd.f64 d0 , d0, d4 add X, X, INC_X add Y, Y, INC_Y .endm #else .macro KERNEL_F4 fldmias X!, { s8 - s9 } fldmias Y!, { s4 - s5} fmacs s0 , s4, s8 fldmias X!, { s10 - s11 } fmacs s1 , s5, s9 fldmias Y!, { s6 - s7 } fmacs s0 , s6, s10 fmacs s1 , s7, s11 .endm .macro KERNEL_F1 fldmias X!, { s4 } fldmias Y!, { s8 } fmacs s0 , s4, s8 .endm .macro KERNEL_S4 nop fldmias X, { s4 } fldmias Y, { s8 } add X, X, INC_X add Y, Y, INC_Y fmacs s0 , s4, s8 fldmias X, { s5 } fldmias Y, { s9 } add X, X, INC_X add Y, Y, INC_Y fmacs s1 , s5, s9 fldmias X, { s6 } fldmias Y, { s10 } add X, X, INC_X add Y, Y, INC_Y fmacs s0 , s6, s10 fldmias X, { s7 } fldmias Y, { s11 } add X, X, INC_X add Y, Y, INC_Y fmacs s1 , s7, s11 .endm .macro KERNEL_S1 fldmias X, { s4 } fldmias Y, { s8 } add X, X, INC_X fmacs s0 , s4, s8 add Y, Y, INC_Y .endm #endif /************************************************************************************** * 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 movs r4, #0 // clear floating point register vmov s0, r4 vmov s1, r4 #if defined(DSDOT) vcvt.f64.f32 d0, s0 vcvt.f64.f32 d1, s1 #endif cmp N, #0 ble sdot_kernel_L999 cmp INC_X, #0 beq sdot_kernel_L999 cmp INC_Y, #0 beq sdot_kernel_L999 cmp INC_X, #1 bne sdot_kernel_S_BEGIN cmp INC_Y, #1 bne sdot_kernel_S_BEGIN sdot_kernel_F_BEGIN: asrs I, N, #2 // I = N / 4 ble sdot_kernel_F1 sdot_kernel_F4: KERNEL_F4 subs I, I, #1 bne sdot_kernel_F4 sdot_kernel_F1: ands I, N, #3 ble sdot_kernel_L999 sdot_kernel_F10: KERNEL_F1 subs I, I, #1 bne sdot_kernel_F10 b sdot_kernel_L999 sdot_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 sdot_kernel_S1 sdot_kernel_S4: KERNEL_S4 subs I, I, #1 bne sdot_kernel_S4 sdot_kernel_S1: ands I, N, #3 ble sdot_kernel_L999 sdot_kernel_S10: KERNEL_S1 subs I, I, #1 bne sdot_kernel_S10 sdot_kernel_L999: sub r3, fp, #128 vldm r3, { s8 - s15} // restore floating point registers #if defined(DSDOT) vadd.f64 d0 , d0, d1 // set return value #else vadd.f32 s0 , s0, s1 // set return value #endif sub sp, fp, #24 pop {r4 - r9, fp} bx lr EPILOGUE