github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/powerpc64/com.asm (about)

     1  dnl  PowerPC-64 mpn_com.
     2  
     3  dnl  Copyright 2004, 2005, 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 POWER3/PPC630          ?
    35  C POWER4/PPC970          1.25
    36  C POWER5                 ?
    37  C POWER6                 1.32
    38  C POWER7                 1.13
    39  
    40  C INPUT PARAMETERS
    41  define(`rp',	`r3')
    42  define(`up',	`r4')
    43  define(`n',	`r5')
    44  
    45  ASM_START()
    46  PROLOGUE(mpn_com)
    47  
    48  ifdef(`HAVE_ABI_mode32',
    49  `	rldicl	n, n, 0,32')
    50  
    51  	cmpdi	cr0, n, 4
    52  	blt	L(sml)
    53  
    54  	addi	r10, n, 4
    55  	srdi	r10, r10, 3
    56  	mtctr	r10
    57  
    58  	andi.	r0, n, 1
    59  	rlwinm	r11, n, 0,30,30
    60  	rlwinm	r12, n, 0,29,29
    61  	cmpdi	cr6, r11, 0
    62  	cmpdi	cr7, r12, 0
    63  
    64  	beq	cr0, L(xx0)
    65  L(xx1):	ld	r6, 0(up)
    66  	addi	up, up, 8
    67  	nor	r6, r6, r6
    68  	std	r6, 0(rp)
    69  	addi	rp, rp, 8
    70  
    71  L(xx0):	bne	cr6, L(x10)
    72  L(x00):	ld	r6, 0(r4)
    73  	ld	r7, 8(r4)
    74  	bne	cr7, L(100)
    75  L(000):	addi	rp, rp, -32
    76  	b	L(lo0)
    77  L(100):	addi	up, up, -32
    78  	b	L(lo4)
    79  L(x10):	ld	r8, 0(r4)
    80  	ld	r9, 8(r4)
    81  	bne	cr7, L(110)
    82  L(010):	addi	up, up, 16
    83  	addi	rp, rp, -16
    84  	b	L(lo2)
    85  L(110):	addi	up, up, -16
    86  	addi	rp, rp, -48
    87  	b	L(lo6)
    88  
    89  L(sml):	mtctr	n
    90  L(t):	ld	r6, 0(up)
    91  	addi	up, up, 8
    92  	nor	r6, r6, r6
    93  	std	r6, 0(rp)
    94  	addi	rp, rp, 8
    95  	bdnz	L(t)
    96  	blr
    97  
    98  	ALIGN(32)
    99  L(top):	nor	r6, r6, r6
   100  	nor	r7, r7, r7
   101  	std	r6, 0(rp)
   102  	std	r7, 8(rp)
   103  L(lo2):	ld	r6, 0(up)
   104  	ld	r7, 8(up)
   105  	nor	r8, r8, r8
   106  	nor	r9, r9, r9
   107  	std	r8, 16(rp)
   108  	std	r9, 24(rp)
   109  L(lo0):	ld	r8, 16(up)
   110  	ld	r9, 24(up)
   111  	nor	r6, r6, r6
   112  	nor	r7, r7, r7
   113  	std	r6, 32(rp)
   114  	std	r7, 40(rp)
   115  L(lo6):	ld	r6, 32(up)
   116  	ld	r7, 40(up)
   117  	nor	r8, r8, r8
   118  	nor	r9, r9, r9
   119  	std	r8, 48(rp)
   120  	std	r9, 56(rp)
   121  	addi	rp, rp, 64
   122  L(lo4):	ld	r8, 48(up)
   123  	ld	r9, 56(up)
   124  	addi	up, up, 64
   125  	bdnz	L(top)
   126  
   127  L(end):	nor	r6, r6, r6
   128  	nor	r7, r7, r7
   129  	std	r6, 0(rp)
   130  	std	r7, 8(rp)
   131  	nor	r8, r8, r8
   132  	nor	r9, r9, r9
   133  	std	r8, 16(rp)
   134  	std	r9, 24(rp)
   135  	blr
   136  EPILOGUE()