github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/x86_64/atom/aorsmul_1.asm (about)

     1  dnl  AMD64 mpn_addmul_1/mpn_submul_1 optimised for Intel Atom.
     2  
     3  dnl  Copyright 2003-2005, 2007, 2008, 2011-2013 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	best
    34  C AMD K8,K9
    35  C AMD K10
    36  C AMD bd1
    37  C AMD bd2
    38  C AMD bobcat
    39  C AMD jaguar
    40  C Intel P4
    41  C Intel PNR
    42  C Intel NHM
    43  C Intel SBR
    44  C Intel IBR
    45  C Intel HWL
    46  C Intel BWL
    47  C Intel atom	19.37		this
    48  C VIA nano
    49  
    50  C The loop of this code is the result of running a code generation and
    51  C optimisation tool suite written by David Harvey and Torbjorn Granlund.
    52  
    53  define(`rp',      `%rdi')   C rcx
    54  define(`up',      `%rsi')   C rdx
    55  define(`n_param', `%rdx')   C r8
    56  define(`v0',      `%rcx')   C r9
    57  
    58  define(`n',       `%rbx')
    59  
    60  ifdef(`OPERATION_addmul_1',`
    61    define(`ADDSUB', `add')
    62    define(`func',   `mpn_addmul_1')
    63  ')
    64  ifdef(`OPERATION_submul_1',`
    65    define(`ADDSUB', `sub')
    66    define(`func',   `mpn_submul_1')
    67  ')
    68  
    69  ABI_SUPPORT(DOS64)
    70  ABI_SUPPORT(STD64)
    71  
    72  MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1)
    73  
    74  ASM_START()
    75  	TEXT
    76  	ALIGN(16)
    77  PROLOGUE(func)
    78  	FUNC_ENTRY(4)
    79  	push	%rbx
    80  
    81  	mov	(up), %rax
    82  	lea	-8(up,n_param,8), up
    83  	lea	-16(rp,n_param,8), rp
    84  
    85  	test	$1, R8(n_param)
    86  	jnz	L(bx1)
    87  
    88  L(bx0):	test	$2, R8(n_param)
    89  	jnz	L(b10)
    90  
    91  L(b00):	mov	$1, R32(n)
    92  	sub	n_param, n
    93  	mul	v0
    94  	mov	%rax, %r11
    95  	mov	8(up,n,8), %rax
    96  	mov	%rdx, %r10
    97  	mul	v0
    98  	mov	%rax, %r8
    99  	mov	16(up,n,8), %rax
   100  	jmp	L(lo0)
   101  
   102  L(b10):	mov	$3, R32(n)
   103  	sub	n_param, n
   104  	mul	v0
   105  	mov	%rax, %r11
   106  	mov	-8(up,n,8), %rax
   107  	mov	%rdx, %r10
   108  	mul	v0
   109  	test	n, n
   110  	jns	L(cj2)
   111  	mov	%rax, %r8
   112  	mov	(up,n,8), %rax
   113  	mov	%rdx, %r9
   114  	jmp	L(lo2)
   115  
   116  L(bx1):	test	$2, R8(n_param)
   117  	jnz	L(b11)
   118  
   119  L(b01):	mov	$2, R32(n)
   120  	sub	n_param, n
   121  	mul	v0
   122  	test	n, n
   123  	jns	L(cj1)
   124  	mov	%rax, %r8
   125  	mov	(up,n,8), %rax
   126  	mov	%rdx, %r9
   127  	mul	v0
   128  	mov	%rax, %r11
   129  	mov	8(up,n,8), %rax
   130  	mov	%rdx, %r10
   131  	jmp	L(lo1)
   132  
   133  L(b11):	xor	R32(n), R32(n)
   134  	sub	n_param, n
   135  	mul	v0
   136  	mov	%rax, %r8
   137  	mov	16(up,n,8), %rax
   138  	mov	%rdx, %r9
   139  	mul	v0
   140  	mov	%rax, %r11
   141  	mov	24(up,n,8), %rax
   142  	jmp	L(lo3)
   143  
   144  	ALIGN(16)
   145  L(top):	mul	v0
   146  	ADDSUB	%r8, -16(rp,n,8)
   147  	mov	%rax, %r8
   148  	mov	(up,n,8), %rax
   149  	adc	%r9, %r11
   150  	mov	%rdx, %r9
   151  	adc	$0, %r10
   152  L(lo2):	mul	v0
   153  	ADDSUB	%r11, -8(rp,n,8)
   154  	mov	%rax, %r11
   155  	mov	8(up,n,8), %rax
   156  	adc	%r10, %r8
   157  	mov	%rdx, %r10
   158  	adc	$0, %r9
   159  L(lo1):	mul	v0
   160  	ADDSUB	%r8, (rp,n,8)
   161  	mov	%rax, %r8
   162  	adc	%r9, %r11
   163  	mov	16(up,n,8), %rax
   164  	adc	$0, %r10
   165  L(lo0):	mov	%rdx, %r9
   166  	mul	v0
   167  	ADDSUB	%r11, 8(rp,n,8)
   168  	mov	%rax, %r11
   169  	adc	%r10, %r8
   170  	mov	24(up,n,8), %rax
   171  	adc	$0, %r9
   172  L(lo3):	add	$4, n
   173  	mov	%rdx, %r10
   174  	js	L(top)
   175  
   176  L(end):	mul	v0
   177  	ADDSUB	%r8, -16(rp,n,8)
   178  	adc	%r9, %r11
   179  	adc	$0, %r10
   180  L(cj2):	ADDSUB	%r11, -8(rp,n,8)
   181  	adc	%r10, %rax
   182  	adc	$0, %rdx
   183  L(cj1):	ADDSUB	%rax, (rp,n,8)
   184  	mov	$0, R32(%rax)
   185  	adc	%rdx, %rax
   186  	pop	%rbx
   187  	FUNC_EXIT()
   188  	ret
   189  EPILOGUE()
   190  ASM_END()