289 lines
5.9 KiB
ArmAsm
289 lines
5.9 KiB
ArmAsm
/*******************************************************************************
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Copyright (c) 2015, 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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#define ASSEMBLER
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#include "common.h"
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#define N x0
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#define X x1
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#define INC_X x2
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#define I x3
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#if !defined(DOUBLE)
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#define SSQ s0
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#define SCALE s1
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#define REGZERO s6
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#define REGONE s7
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#else
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#define SSQ d0
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#define SCALE d1
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#define REGZERO d6
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#define REGONE d7
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#endif
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/**************************************************************************************
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* Macro definitions
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**************************************************************************************/
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.macro KERNEL_F1
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#if !defined(DOUBLE)
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ldr s4, [X], #4
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fcmp s4, REGZERO
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beq KERNEL_F1_NEXT_\@
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fabs s4, s4
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fcmp SCALE, s4
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bge KERNEL_F1_SCALE_GE_XR_\@
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fdiv s2, SCALE, s4
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fmul s2, s2, s2
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fmul s3, SSQ, s2
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fadd SSQ, REGONE, s3
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fmov SCALE, s4
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b KERNEL_F1_NEXT_\@
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KERNEL_F1_SCALE_GE_XR_\@:
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fdiv s2, s4, SCALE
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fmla SSQ, s2, v2.s[0]
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KERNEL_F1_NEXT_\@:
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ldr s5, [X], #4
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fcmp s5, REGZERO
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beq KERNEL_F1_END_\@
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fabs s5, s5
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fcmp SCALE, s5
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bge KERNEL_F1_SCALE_GE_XI_\@
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fdiv s2, SCALE, s5
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fmul s2, s2, s2
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fmul s3, SSQ, s2
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fadd SSQ, REGONE, s3
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fmov SCALE, s5
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b KERNEL_F1_END_\@
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KERNEL_F1_SCALE_GE_XI_\@:
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fdiv s2, s5, SCALE
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fmla SSQ, s2, v2.s[0]
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#else
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ldr d4, [X], #8
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fcmp d4, REGZERO
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beq KERNEL_F1_NEXT_\@
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fabs d4, d4
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fcmp SCALE, d4
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bge KERNEL_F1_SCALE_GE_XR_\@
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fdiv d2, SCALE, d4
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fmul d2, d2, d2
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fmul d3, SSQ, d2
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fadd SSQ, REGONE, d3
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fmov SCALE, d4
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b KERNEL_F1_NEXT_\@
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KERNEL_F1_SCALE_GE_XR_\@:
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fdiv d2, d4, SCALE
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fmla SSQ, d2, v2.d[0]
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KERNEL_F1_NEXT_\@:
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ldr d5, [X], #8
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fcmp d5, REGZERO
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beq KERNEL_F1_END_\@
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fabs d5, d5
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fcmp SCALE, d5
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bge KERNEL_F1_SCALE_GE_XI_\@
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fdiv d2, SCALE, d5
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fmul d2, d2, d2
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fmul d3, SSQ, d2
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fadd SSQ, REGONE, d3
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fmov SCALE, d5
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b KERNEL_F1_END_\@
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KERNEL_F1_SCALE_GE_XI_\@:
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fdiv d2, d5, SCALE
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fmla SSQ, d2, v2.d[0]
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#endif
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KERNEL_F1_END_\@:
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.endm
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.macro KERNEL_S1
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#if !defined(DOUBLE)
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ldr s4, [X]
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fcmp s4, REGZERO
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beq KERNEL_S1_NEXT_\@
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fabs s4, s4
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fcmp SCALE, s4
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bge KERNEL_S1_SCALE_GE_XR_\@
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fdiv s2, SCALE, s4
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fmul s2, s2, s2
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fmul s3, SSQ, s2
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fadd SSQ, REGONE, s3
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fmov SCALE, s4
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b KERNEL_S1_NEXT_\@
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KERNEL_S1_SCALE_GE_XR_\@:
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fdiv s2, s4, SCALE
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fmla SSQ, s2, v2.s[0]
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KERNEL_S1_NEXT_\@:
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ldr s5, [X, #4]
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fcmp s5, REGZERO
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beq KERNEL_S1_END_\@
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fabs s5, s5
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fcmp SCALE, s5
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bge KERNEL_S1_SCALE_GE_XI_\@
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fdiv s2, SCALE, s5
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fmul s2, s2, s2
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fmul s3, SSQ, s2
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fadd SSQ, REGONE, s3
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fmov SCALE, s5
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b KERNEL_S1_END_\@
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KERNEL_S1_SCALE_GE_XI_\@:
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fdiv s2, s5, SCALE
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fmla SSQ, s2, v2.s[0]
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#else
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ldr d4, [X]
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fcmp d4, REGZERO
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beq KERNEL_S1_NEXT_\@
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fabs d4, d4
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fcmp SCALE, d4
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bge KERNEL_S1_SCALE_GE_XR_\@
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fdiv d2, SCALE, d4
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fmul d2, d2, d2
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fmul d3, SSQ, d2
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fadd SSQ, REGONE, d3
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fmov SCALE, d4
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b KERNEL_S1_NEXT_\@
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KERNEL_S1_SCALE_GE_XR_\@:
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fdiv d2, d4, SCALE
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fmla SSQ, d2, v2.d[0]
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KERNEL_S1_NEXT_\@:
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ldr d5, [X, #8]
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fcmp d5, REGZERO
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beq KERNEL_S1_END_\@
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fabs d5, d5
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fcmp SCALE, d5
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bge KERNEL_S1_SCALE_GE_XI_\@
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fdiv d2, SCALE, d5
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fmul d2, d2, d2
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fmul d3, SSQ, d2
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fadd SSQ, REGONE, d3
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fmov SCALE, d5
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b KERNEL_S1_END_\@
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KERNEL_S1_SCALE_GE_XI_\@:
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fdiv d2, d5, SCALE
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fmla SSQ, d2, v2.d[0]
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#endif
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KERNEL_S1_END_\@:
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add X, X, INC_X
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.endm
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.macro KERNEL_F8
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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KERNEL_F1
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.endm
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.macro INIT_S
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#if !defined(DOUBLE)
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lsl INC_X, INC_X, #3 // INC_X * SIZE
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#else
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lsl INC_X, INC_X, #4 // INC_X * SIZE
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#endif
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.endm
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.macro INIT
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eor v1.16b, v1.16b, v1.16b // scale=0.0
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fmov SSQ, #1.0
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fmov REGONE, SSQ
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fmov REGZERO, SCALE
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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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INIT
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cmp N, #0
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ble .Lznrm2_kernel_L999
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cmp INC_X, #0
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beq .Lznrm2_kernel_L999
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cmp INC_X, #1
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bne .Lznrm2_kernel_S_BEGIN
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.Lznrm2_kernel_F_BEGIN:
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asr I, N, #3 // I = N / 8
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cmp I, xzr
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ble .Lznrm2_kernel_F1
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.Lznrm2_kernel_F8:
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KERNEL_F8
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subs I, I, #1
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bne .Lznrm2_kernel_F8
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.Lznrm2_kernel_F1:
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ands I, N, #7
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ble .Lznrm2_kernel_L999
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.Lznrm2_kernel_F10:
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KERNEL_F1
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subs I, I, #1
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bne .Lznrm2_kernel_F10
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b .Lznrm2_kernel_L999
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.Lznrm2_kernel_S_BEGIN:
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INIT_S
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mov I, N
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.align 5
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.Lznrm2_kernel_S10:
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KERNEL_S1
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subs I, I, #1
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bne .Lznrm2_kernel_S10
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.Lznrm2_kernel_L999:
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fsqrt SSQ, SSQ
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fmul SSQ, SCALE, SSQ
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ret
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EPILOGUE
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