dnl AMD64 mpn_addmul_1 and mpn_submul_1 optimised for Intel Nehalem.
dnl Contributed to the GNU project by Torbjörn Granlund.
dnl Copyright 2003-2005, 2007, 2008, 2011-2013 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
include(`../config.m4')
C cycles/limb
C AMD K8,K9
C AMD K10
C AMD bull
C AMD pile
C AMD bobcat
C AMD jaguar
C Intel P4
C Intel core
C Intel NHM 4.55 with minor fluctuations
C Intel SBR
C Intel IBR
C Intel HWL
C Intel BWL
C Intel atom
C VIA nano
C The loop of this code is the result of running a code generation and
C optimization tool suite written by David Harvey and Torbjorn Granlund.
C N.B.: Be careful if editing, making sure the loop alignment padding does not
C become large, as we currently fall into it.
define(`rp', `%rdi') C rcx
define(`up', `%rsi') C rdx
define(`n_param', `%rdx') C r8
define(`v0', `%rcx') C r9
define(`n', `%rbx')
ifdef(`OPERATION_addmul_1',`
define(`ADDSUB', `add')
define(`func', `mpn_addmul_1')
')
ifdef(`OPERATION_submul_1',`
define(`ADDSUB', `sub')
define(`func', `mpn_submul_1')
')
ABI_SUPPORT(DOS64)
ABI_SUPPORT(STD64)
MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1)
ASM_START()
TEXT
ALIGN(32)
PROLOGUE(func)
FUNC_ENTRY(4)
push %rbx
mov (up), %rax
lea -8(up,n_param,8), up
mov (rp), %r8
lea -8(rp,n_param,8), rp
test $1, R8(n_param)
jnz L(bx1)
L(bx0): test $2, R8(n_param)
jnz L(b10)
L(b00): mov $3, R32(n)
sub n_param, n
mul v0
mov $0, R32(%r11)
mov %r8, %r10
ADDSUB %rax, %r10
mov -8(up,n,8), %rax
adc %rdx, %r11
jmp L(lo0)
L(b10): mov $1, R32(n)
sub n_param, n
mul v0
mov %r8, %r10
mov $0, R32(%r11)
ADDSUB %rax, %r10
mov 8(up,n,8), %rax
adc %rdx, %r11
jmp L(lo2)
L(bx1): test $2, R8(n_param)
jz L(b01)
L(b11): mov $2, R32(n)
sub n_param, n
mul v0
ADDSUB %rax, %r8
mov $0, R32(%r9)
mov (up,n,8), %rax
adc %rdx, %r9
jmp L(lo3)
L(b01): mov $0, R32(n)
sub n_param, n
xor %r11, %r11
add $4, n
jc L(end)
ALIGN(32)
L(top): mul v0
ADDSUB %rax, %r8
mov $0, R32(%r9)
mov -16(up,n,8), %rax
adc %rdx, %r9
L(lo1): mul v0
ADDSUB %r11, %r8
mov $0, R32(%r11)
mov -16(rp,n,8), %r10
adc $0, %r9
ADDSUB %rax, %r10
mov -8(up,n,8), %rax
adc %rdx, %r11
mov %r8, -24(rp,n,8)
ADDSUB %r9, %r10
adc $0, %r11
L(lo0): mov -8(rp,n,8), %r8
mul v0
ADDSUB %rax, %r8
mov $0, R32(%r9)
mov (up,n,8), %rax
adc %rdx, %r9
mov %r10, -16(rp,n,8)
ADDSUB %r11, %r8
adc $0, %r9
L(lo3): mul v0
mov (rp,n,8), %r10
mov $0, R32(%r11)
ADDSUB %rax, %r10
mov 8(up,n,8), %rax
adc %rdx, %r11
mov %r8, -8(rp,n,8)
ADDSUB %r9, %r10
adc $0, %r11
L(lo2): mov 8(rp,n,8), %r8
mov %r10, (rp,n,8)
add $4, n
jnc L(top)
L(end): mul v0
ADDSUB %rax, %r8
mov $0, R32(%rax)
adc %rdx, %rax
ADDSUB %r11, %r8
adc $0, %rax
mov %r8, (rp)
pop %rbx
FUNC_EXIT()
ret
EPILOGUE()
ASM_END()
CF_PROT