github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/x86/mul_1.asm (about)

     1  dnl  x86 mpn_mul_1 (for 386, 486, and Pentium Pro) -- Multiply a limb vector
     2  dnl  with a limb and store the result in a second limb vector.
     3  
     4  dnl  Copyright 1992, 1994, 1997-2002, 2005 Free Software Foundation, Inc.
     5  
     6  dnl  This file is part of the GNU MP Library.
     7  dnl
     8  dnl  The GNU MP Library is free software; you can redistribute it and/or modify
     9  dnl  it under the terms of either:
    10  dnl
    11  dnl    * the GNU Lesser General Public License as published by the Free
    12  dnl      Software Foundation; either version 3 of the License, or (at your
    13  dnl      option) any later version.
    14  dnl
    15  dnl  or
    16  dnl
    17  dnl    * the GNU General Public License as published by the Free Software
    18  dnl      Foundation; either version 2 of the License, or (at your option) any
    19  dnl      later version.
    20  dnl
    21  dnl  or both in parallel, as here.
    22  dnl
    23  dnl  The GNU MP Library is distributed in the hope that it will be useful, but
    24  dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    25  dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    26  dnl  for more details.
    27  dnl
    28  dnl  You should have received copies of the GNU General Public License and the
    29  dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
    30  dnl  see https://www.gnu.org/licenses/.
    31  
    32  include(`../config.m4')
    33  
    34  
    35  C			    cycles/limb
    36  C P5				12.5
    37  C P6 model 0-8,10-12		 5.5
    38  C P6 model 9  (Banias)
    39  C P6 model 13 (Dothan)		 5.25
    40  C P4 model 0  (Willamette)	19.0
    41  C P4 model 1  (?)		19.0
    42  C P4 model 2  (Northwood)	19.0
    43  C P4 model 3  (Prescott)
    44  C P4 model 4  (Nocona)
    45  C AMD K6			10.5
    46  C AMD K7			 4.5
    47  C AMD K8
    48  
    49  
    50  C mp_limb_t mpn_mul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
    51  C                      mp_limb_t multiplier);
    52  
    53  defframe(PARAM_MULTIPLIER,16)
    54  defframe(PARAM_SIZE,      12)
    55  defframe(PARAM_SRC,       8)
    56  defframe(PARAM_DST,       4)
    57  
    58  	TEXT
    59  	ALIGN(8)
    60  PROLOGUE(mpn_mul_1)
    61  deflit(`FRAME',0)
    62  
    63  	pushl	%edi
    64  	pushl	%esi
    65  	pushl	%ebx
    66  	pushl	%ebp
    67  deflit(`FRAME',16)
    68  
    69  	movl	PARAM_DST,%edi
    70  	movl	PARAM_SRC,%esi
    71  	movl	PARAM_SIZE,%ecx
    72  
    73  	xorl	%ebx,%ebx
    74  	andl	$3,%ecx
    75  	jz	L(end0)
    76  
    77  L(oop0):
    78  	movl	(%esi),%eax
    79  	mull	PARAM_MULTIPLIER
    80  	leal	4(%esi),%esi
    81  	addl	%ebx,%eax
    82  	movl	$0,%ebx
    83  	adcl	%ebx,%edx
    84  	movl	%eax,(%edi)
    85  	movl	%edx,%ebx	C propagate carry into cylimb
    86  
    87  	leal	4(%edi),%edi
    88  	decl	%ecx
    89  	jnz	L(oop0)
    90  
    91  L(end0):
    92  	movl	PARAM_SIZE,%ecx
    93  	shrl	$2,%ecx
    94  	jz	L(end)
    95  
    96  
    97  	ALIGN(8)
    98  L(oop):	movl	(%esi),%eax
    99  	mull	PARAM_MULTIPLIER
   100  	addl	%eax,%ebx
   101  	movl	$0,%ebp
   102  	adcl	%edx,%ebp
   103  
   104  	movl	4(%esi),%eax
   105  	mull	PARAM_MULTIPLIER
   106  	movl	%ebx,(%edi)
   107  	addl	%eax,%ebp	C new lo + cylimb
   108  	movl	$0,%ebx
   109  	adcl	%edx,%ebx
   110  
   111  	movl	8(%esi),%eax
   112  	mull	PARAM_MULTIPLIER
   113  	movl	%ebp,4(%edi)
   114  	addl	%eax,%ebx	C new lo + cylimb
   115  	movl	$0,%ebp
   116  	adcl	%edx,%ebp
   117  
   118  	movl	12(%esi),%eax
   119  	mull	PARAM_MULTIPLIER
   120  	movl	%ebx,8(%edi)
   121  	addl	%eax,%ebp	C new lo + cylimb
   122  	movl	$0,%ebx
   123  	adcl	%edx,%ebx
   124  
   125  	movl	%ebp,12(%edi)
   126  
   127  	leal	16(%esi),%esi
   128  	leal	16(%edi),%edi
   129  	decl	%ecx
   130  	jnz	L(oop)
   131  
   132  L(end):	movl	%ebx,%eax
   133  
   134  	popl	%ebp
   135  	popl	%ebx
   136  	popl	%esi
   137  	popl	%edi
   138  	ret
   139  
   140  EPILOGUE()