github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/s390_32/lshiftc.asm (about)

     1  dnl  S/390-32 mpn_lshiftc.
     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		 7
    35  C z990	         3.375
    36  C z9		 ?
    37  C z10		 ?
    38  C z196		 ?
    39  
    40  C TODO
    41  C  *
    42  
    43  C INPUT PARAMETERS
    44  define(`rp',	`%r2')
    45  define(`up',	`%r3')
    46  define(`n',	`%r4')
    47  define(`cnt',	`%r5')
    48  
    49  ASM_START()
    50  PROLOGUE(mpn_lshiftc)
    51  	lr	%r1, n
    52  	sll	%r1, 2
    53  	stm	%r6, %r13, 24(%r15)
    54  	la	up, 0(%r1,up)		C put up near end of U
    55  	la	rp, 0(%r1,rp)		C put rp near end of R
    56  	ahi	up, -20
    57  	ahi	rp, -16
    58  	lhi	%r8, 32
    59  	sr	%r8, cnt
    60  	l	%r12, 16(up)
    61  	srl	%r12, 0(%r8)		C return value
    62  	lhi	%r13, -1
    63  	lhi	%r7, 3
    64  	nr	%r7, n
    65  	srl	n, 2
    66  	je	L(b0)
    67  	chi	%r7, 2
    68  	jl	L(b1)
    69  	je	L(b2)
    70  
    71  L(b3):	l	%r10, 16(up)
    72  	l	%r11, 12(up)
    73  	l	%r9,   8(up)
    74  	ahi	up, -8
    75  	lr	%r8, %r11
    76  	sldl	%r10, 0(cnt)
    77  	sldl	%r8,  0(cnt)
    78  	xr	%r10, %r13
    79  	xr	%r8, %r13
    80  	st	%r10, 12(rp)
    81  	st	%r8,   8(rp)
    82  	ahi	rp, -8
    83  	ltr	n, n
    84  	je	L(end)
    85  	j	L(top)
    86  
    87  L(b2):	l	%r10, 16(up)
    88  	l	%r11, 12(up)
    89  	ahi	up, -4
    90  	sldl	%r10, 0(cnt)
    91  	xr	%r10, %r13
    92  	st	%r10, 12(rp)
    93  	ahi	rp, -4
    94  	ltr	n, n
    95  	je	L(end)
    96  	j	L(top)
    97  
    98  L(b1):	ltr	n, n
    99  	je	L(end)
   100  	j	L(top)
   101  
   102  L(b0):	l	%r10,16(up)
   103  	l	%r8, 12(up)
   104  	l	%r6,  8(up)
   105  	l	%r0,  4(up)
   106  	ahi	up, -12
   107  	lr	%r11, %r8
   108  	lr	%r9,  %r6
   109  	lr	%r7,  %r0
   110  	sldl	%r10,0(cnt)
   111  	sldl	%r8, 0(cnt)
   112  	sldl	%r6, 0(cnt)
   113  	xr	%r10, %r13
   114  	xr	%r8, %r13
   115  	xr	%r6, %r13
   116  	st	%r10, 12(rp)
   117  	st	%r8,   8(rp)
   118  	st	%r6,   4(rp)
   119  	ahi	rp, -12
   120  	ahi	n, -1
   121  	je	L(end)
   122  
   123  	ALIGN(8)
   124  L(top):	l	%r10, 16(up)
   125  	l	%r8,  12(up)
   126  	l	%r6,   8(up)
   127  	l	%r0,   4(up)
   128  	l	%r1,   0(up)
   129  	lr	%r11, %r8
   130  	lr	%r9,  %r6
   131  	lr	%r7,  %r0
   132  	ahi	up, -16
   133  	sldl	%r10, 0(cnt)
   134  	sldl	%r8,  0(cnt)
   135  	sldl	%r6,  0(cnt)
   136  	sldl	%r0,  0(cnt)
   137  	xr	%r10, %r13
   138  	xr	%r8, %r13
   139  	xr	%r6, %r13
   140  	xr	%r0, %r13
   141  	st	%r10, 12(rp)
   142  	st	%r8,   8(rp)
   143  	st	%r6,   4(rp)
   144  	st	%r0,   0(rp)
   145  	ahi	rp, -16
   146  	brct	n, L(top)
   147  
   148  L(end):	l	%r10, 16(up)
   149  	sll	%r10, 0(cnt)
   150  	xr	%r10, %r13
   151  	st	%r10, 12(rp)
   152  
   153  	lr	%r2, %r12
   154  	lm	%r6, %r13, 24(%r15)
   155  	br	%r14
   156  EPILOGUE()