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snrm2.S
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/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* 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. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``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 UNIVERSITY OF TEXAS AT */
/* AUSTIN 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. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
#define ASSEMBLER
#include "common.h"
#define N $4
#define X $5
#define INCX $6
#define I $2
#define TEMP $3
#define a1 $f6
#define a2 $f7
#define a3 $f8
#define a4 $f9
#define a5 $f10
#define a6 $f11
#define a7 $f12
#define a8 $f13
#define s1 $f0
#define s2 $f1
#define t1 $f2
#define t2 $f3
#define t3 $f4
#define t4 $f5
PROLOGUE
#ifdef F_INTERFACE
LDINT N, 0(N)
LDINT INCX, 0(INCX)
#endif
dmtc1 $0, s1
li TEMP, SIZE
blez N, .L999
mov.d s2, s1
beqz INCX, .L999
dsll INCX, INCX, BASE_SHIFT
bne INCX, TEMP, .L20
dsra I, N, 3
blez I, .L15
NOP
LD a1, 0 * SIZE(X)
LD a2, 1 * SIZE(X)
LD a3, 2 * SIZE(X)
LD a4, 3 * SIZE(X)
LD a5, 4 * SIZE(X)
daddiu I, I, -1
cvt.d.s t1, a1
LD a6, 5 * SIZE(X)
cvt.d.s t2, a2
LD a7, 6 * SIZE(X)
cvt.d.s t3, a3
LD a8, 7 * SIZE(X)
blez I, .L13
cvt.d.s t4, a4
.align 3
.L12:
madd.d s1, s1, t1, t1
LD a1, 8 * SIZE(X)
cvt.d.s t1, a5
NOP
madd.d s2, s2, t2, t2
LD a2, 9 * SIZE(X)
cvt.d.s t2, a6
NOP
madd.d s1, s1, t3, t3
LD a3, 10 * SIZE(X)
cvt.d.s t3, a7
NOP
madd.d s2, s2, t4, t4
LD a4, 11 * SIZE(X)
cvt.d.s t4, a8
NOP
madd.d s1, s1, t1, t1
LD a5, 12 * SIZE(X)
cvt.d.s t1, a1
NOP
madd.d s2, s2, t2, t2
LD a6, 13 * SIZE(X)
cvt.d.s t2, a2
daddiu I, I, -1
madd.d s1, s1, t3, t3
LD a7, 14 * SIZE(X)
cvt.d.s t3, a3
daddiu X, X, 8 * SIZE
madd.d s2, s2, t4, t4
LD a8, 7 * SIZE(X)
bgtz I, .L12
cvt.d.s t4, a4
.align 3
.L13:
madd.d s1, s1, t1, t1
cvt.d.s t1, a5
madd.d s2, s2, t2, t2
cvt.d.s t2, a6
madd.d s1, s1, t3, t3
cvt.d.s t3, a7
madd.d s2, s2, t4, t4
cvt.d.s t4, a8
madd.d s1, s1, t1, t1
madd.d s2, s2, t2, t2
madd.d s1, s1, t3, t3
madd.d s2, s2, t4, t4
daddiu X, X, 8 * SIZE
.align 3
.L15:
andi I, N, 7
blez I, .L999
NOP
.align 3
.L16:
LD a1, 0 * SIZE(X)
daddiu I, I, -1
cvt.d.s t1, a1
madd.d s1, s1, t1, t1
bgtz I, .L16
daddiu X, X, SIZE
j .L999
NOP
.align 3
.L20:
blez I, .L25
NOP
LD a1, 0 * SIZE(X)
daddu X, X, INCX
LD a2, 0 * SIZE(X)
daddu X, X, INCX
LD a3, 0 * SIZE(X)
daddu X, X, INCX
LD a4, 0 * SIZE(X)
daddu X, X, INCX
LD a5, 0 * SIZE(X)
daddu X, X, INCX
LD a6, 0 * SIZE(X)
daddu X, X, INCX
LD a7, 0 * SIZE(X)
daddu X, X, INCX
LD a8, 0 * SIZE(X)
daddiu I, I, -1
cvt.d.s t1, a1
cvt.d.s t2, a2
cvt.d.s t3, a3
cvt.d.s t4, a4
blez I, .L24
daddu X, X, INCX
.align 3
.L23:
madd.d s1, s1, t1, t1
LD a1, 0 * SIZE(X)
cvt.d.s t1, a5
daddu X, X, INCX
madd.d s2, s2, t2, t2
LD a2, 0 * SIZE(X)
cvt.d.s t2, a6
daddu X, X, INCX
madd.d s1, s1, t3, t3
LD a3, 0 * SIZE(X)
cvt.d.s t3, a7
daddu X, X, INCX
madd.d s2, s2, t4, t4
LD a4, 0 * SIZE(X)
cvt.d.s t4, a8
daddu X, X, INCX
madd.d s1, s1, t1, t1
LD a5, 0 * SIZE(X)
cvt.d.s t1, a1
daddu X, X, INCX
madd.d s2, s2, t2, t2
LD a6, 0 * SIZE(X)
cvt.d.s t2, a2
daddu X, X, INCX
madd.d s1, s1, t3, t3
LD a7, 0 * SIZE(X)
cvt.d.s t3, a3
daddu X, X, INCX
madd.d s2, s2, t4, t4
LD a8, 0 * SIZE(X)
cvt.d.s t4, a4
daddiu I, I, -1
bgtz I, .L23
daddu X, X, INCX
.align 3
.L24:
madd.d s1, s1, t1, t1
cvt.d.s t1, a5
madd.d s2, s2, t2, t2
cvt.d.s t2, a6
madd.d s1, s1, t3, t3
cvt.d.s t3, a7
madd.d s2, s2, t4, t4
cvt.d.s t4, a8
madd.d s1, s1, t1, t1
madd.d s2, s2, t2, t2
madd.d s1, s1, t3, t3
madd.d s2, s2, t4, t4
.align 3
.L25:
andi I, N, 7
blez I, .L999
NOP
.align 3
.L26:
LD a1, 0 * SIZE(X)
daddiu I, I, -1
cvt.d.s t1, a1
daddu X, X, INCX
bgtz I, .L26
madd.d s1, s1, t1, t1
.align 3
.L999:
add.d s1, s1, s2
sqrt.d s1, s1
j $31
cvt.s.d s1, s1
EPILOGUE