github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/powerpc32/sqr_diag_addlsh1.asm (about)

     1  dnl  PowerPC-32 mpn_sqr_diag_addlsh1.
     2  
     3  dnl  Copyright 2013 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                cycles/limb
    34  C 603e			 ?
    35  C 604e			 ?
    36  C 75x (G3)		 ?
    37  C 7400,7410 (G4)	 ?
    38  C 744x,745x (G4+)	 6
    39  C power4/ppc970		 ?
    40  C power5		 ?
    41  
    42  C This has been feebly optimised for 7447 but not for any other CPU.
    43  
    44  define(`rp',	r3)
    45  define(`tp',	r4)
    46  define(`up',	r5)
    47  define(`n',	r6)
    48  
    49  ASM_START()
    50  PROLOGUE(mpn_sqr_diag_addlsh1)
    51  	addi	n, n, -1
    52  	addi	tp, tp, -4
    53  	mtctr	n
    54  	lwz	r0, 0(up)
    55  	li	r10, 0
    56  	mullw	r7, r0, r0
    57  	stw	r7, 0(rp)
    58  	mulhwu	r6, r0, r0
    59  	addic	r31, r31, 0	C clear CF
    60  
    61  	ALIGN(16)
    62  L(top):	lwzu	r0, 4(up)
    63  	mullw	r7, r0, r0
    64  	lwz	r8, 4(tp)
    65  	lwzu	r9, 8(tp)
    66  	rlwimi	r10, r8, 1,0,30
    67  	srwi	r11, r8, 31
    68  	rlwimi	r11, r9, 1,0,30
    69  	adde	r10, r10, r6
    70  	adde	r11, r11, r7
    71  	stw	r10, 4(rp)
    72  	srwi	r10, r9, 31
    73  	mulhwu	r6, r0, r0
    74  	stwu	r11, 8(rp)
    75  	bdnz	L(top)
    76  
    77  	adde	r10, r10, r6
    78  	stw	r10, 4(rp)
    79  	blr
    80  EPILOGUE()