github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/pa32/hppa2_0/sqr_diagonal.asm (about)

     1  dnl  HP-PA 32-bit mpn_sqr_diagonal optimized for the PA8x00.
     2  
     3  dnl  Copyright 2001, 2002 Free Software Foundation, Inc.
     4  
     5  dnl  This file is part of the GNU MP Library.
     6  dnl
     7  dnl  The GNU MP Library is free software; you can redistribute it and/or modify
     8  dnl  it under the terms of either:
     9  dnl
    10  dnl    * the GNU Lesser General Public License as published by the Free
    11  dnl      Software Foundation; either version 3 of the License, or (at your
    12  dnl      option) any later version.
    13  dnl
    14  dnl  or
    15  dnl
    16  dnl    * the GNU General Public License as published by the Free Software
    17  dnl      Foundation; either version 2 of the License, or (at your option) any
    18  dnl      later version.
    19  dnl
    20  dnl  or both in parallel, as here.
    21  dnl
    22  dnl  The GNU MP Library is distributed in the hope that it will be useful, but
    23  dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    24  dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    25  dnl  for more details.
    26  dnl
    27  dnl  You should have received copies of the GNU General Public License and the
    28  dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
    29  dnl  see https://www.gnu.org/licenses/.
    30  
    31  include(`../config.m4')
    32  
    33  C This code runs at 6 cycles/limb on the PA7100 and 2 cycles/limb on PA8x00.
    34  C The 2-way unrolling is actually not helping the PA7100.
    35  
    36  C INPUT PARAMETERS
    37  define(`rp',`%r26')
    38  define(`up',`%r25')
    39  define(`n',`%r24')
    40  
    41  ASM_START()
    42  PROLOGUE(mpn_sqr_diagonal)
    43  
    44  	fldws,ma	4(up),%fr4r
    45  	addib,=		-1,n,L(end1)
    46  	ldo		4(rp),rp
    47  
    48  	fldws,ma	4(up),%fr6r
    49  	addib,=		-1,n,L(end2)
    50  	xmpyu		%fr4r,%fr4r,%fr5
    51  
    52  	fldws,ma	4(up),%fr4r
    53  	addib,=		-1,n,L(end3)
    54  	xmpyu		%fr6r,%fr6r,%fr7
    55  
    56  
    57  LDEF(loop)
    58  	fldws,ma	4(up),%fr6r
    59  	fstws		%fr5r,-4(rp)
    60  	fstws,ma	%fr5l,8(rp)
    61  	addib,=		-1,n,L(exite)
    62  	xmpyu		%fr4r,%fr4r,%fr5
    63  	fldws,ma	4(up),%fr4r
    64  	fstws		%fr7r,-4(rp)
    65  	fstws,ma	%fr7l,8(rp)
    66  	addib,<>	-1,n,L(loop)
    67  	xmpyu		%fr6r,%fr6r,%fr7
    68  
    69  LDEF(exito)
    70  	fstws		%fr5r,-4(rp)
    71  	fstws		%fr5l,0(rp)
    72  	xmpyu		%fr4r,%fr4r,%fr5
    73  	fstws		%fr7r,4(rp)
    74  	fstws		%fr7l,8(rp)
    75  	fstws,mb	%fr5r,12(rp)
    76  	bv		0(%r2)
    77  	fstws		%fr5l,4(rp)
    78  
    79  LDEF(exite)
    80  	fstws		%fr7r,-4(rp)
    81  	fstws		%fr7l,0(rp)
    82  	xmpyu		%fr6r,%fr6r,%fr7
    83  	fstws		%fr5r,4(rp)
    84  	fstws		%fr5l,8(rp)
    85  	fstws,mb	%fr7r,12(rp)
    86  	bv		0(%r2)
    87  	fstws		%fr7l,4(rp)
    88  
    89  LDEF(end1)
    90  	xmpyu		%fr4r,%fr4r,%fr5
    91  	fstws		%fr5r,-4(rp)
    92  	bv		0(%r2)
    93  	fstws,ma	%fr5l,8(rp)
    94  
    95  LDEF(end2)
    96  	xmpyu		%fr6r,%fr6r,%fr7
    97  	fstws		%fr5r,-4(rp)
    98  	fstws		%fr5l,0(rp)
    99  	fstws		%fr7r,4(rp)
   100  	bv		0(%r2)
   101  	fstws		%fr7l,8(rp)
   102  
   103  LDEF(end3)
   104  	fstws		%fr5r,-4(rp)
   105  	fstws		%fr5l,0(rp)
   106  	xmpyu		%fr4r,%fr4r,%fr5
   107  	fstws		%fr7r,4(rp)
   108  	fstws		%fr7l,8(rp)
   109  	fstws,mb	%fr5r,12(rp)
   110  	bv		0(%r2)
   111  	fstws		%fr5l,4(rp)
   112  EPILOGUE(mpn_sqr_diagonal)