github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/s390_64/mod_34lsub1.asm (about)

     1  dnl  S/390-64 mpn_mod_34lsub1
     2  
     3  dnl  Copyright 2011 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 z900		 5.8
    35  C z990           2
    36  C z9		 ?
    37  C z10		 4.5
    38  C z196		 ?
    39  
    40  C TODO
    41  C  * Optimise summation code, see x86_64.
    42  
    43  C INPUT PARAMETERS
    44  define(`rp',	`%r2')
    45  define(`n',	`%r3')
    46  
    47  ASM_START()
    48  PROLOGUE(mpn_mod_34lsub1)
    49  	stmg	%r7, %r12, 56(%r15)
    50  	lghi	%r11, 0
    51  	lghi	%r12, 0
    52  	lghi	%r0, 0
    53  	lghi	%r8, 0
    54  	lghi	%r9, 0
    55  	lghi	%r10, 0
    56  	lghi	%r7, 0
    57  	aghi	%r3, -3
    58  	jl	.L3
    59  
    60  L(top):	alg	%r0, 0(%r2)
    61  	alcg	%r12, 8(%r2)
    62  	alcg	%r11, 16(%r2)
    63  	alcgr	%r8, %r7
    64  	la	%r2, 24(%r2)
    65  	aghi	%r3, -3
    66  	jnl	L(top)
    67  
    68  	lgr	%r7, %r8
    69  	srlg	%r1, %r11, 16
    70  	nihh	%r7, 0			C 0xffffffffffff
    71  	agr	%r7, %r1
    72  	srlg	%r8, %r8, 48
    73  	agr	%r7, %r8
    74  	sllg	%r11, %r11, 32
    75  	nihh	%r11, 0
    76  	agr	%r7, %r11
    77  .L3:
    78  	cghi	%r3, -3
    79  	je	.L6
    80  	alg	%r0, 0(%r2)
    81  	alcgr	%r10, %r10
    82  	cghi	%r3, -2
    83  	je	.L6
    84  	alg	%r12, 8(%r2)
    85  	alcgr	%r9, %r9
    86  .L6:
    87  	srlg	%r1, %r0, 48
    88  	nihh	%r0, 0			C 0xffffffffffff
    89  	agr	%r0, %r1
    90  	agr	%r0, %r7
    91  	srlg	%r1, %r12, 32
    92  	agr	%r0, %r1
    93  	srlg	%r1, %r10, 32
    94  	agr	%r0, %r1
    95  	llgfr	%r12, %r12
    96  	srlg	%r1, %r9, 16
    97  	sllg	%r12, %r12, 16
    98  	llgfr	%r10, %r10
    99  	agr	%r0, %r1
   100  	llill	%r2, 65535
   101  	agr	%r0, %r12
   102  	sllg	%r10, %r10, 16
   103  	ngr	%r2, %r9
   104  	agr	%r0, %r10
   105  	sllg	%r2, %r2, 32
   106  	agr	%r2, %r0
   107  	lmg	%r7, %r12, 56(%r15)
   108  	br	%r14
   109  EPILOGUE()