107 lines
2.4 KiB
NASM
107 lines
2.4 KiB
NASM
dnl core2 mpn_sumdiff_n
|
|
|
|
dnl Copyright 2009 Jason Moxham
|
|
|
|
dnl This file is part of the MPIR Library.
|
|
|
|
dnl The MPIR Library is free software; you can redistribute it and/or modify
|
|
dnl it under the terms of the GNU Lesser General Public License as published
|
|
dnl by the Free Software Foundation; either version 2.1 of the License, or (at
|
|
dnl your option) any later version.
|
|
|
|
dnl The MPIR 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 Lesser General Public
|
|
dnl License for more details.
|
|
|
|
dnl You should have received a copy of the GNU Lesser General Public License
|
|
dnl along with the MPIR Library; see the file COPYING.LIB. If not, write
|
|
dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
dnl Boston, MA 02110-1301, USA.
|
|
|
|
include(`../config.m4')
|
|
|
|
C (rdi,r8)=(rdx,r8)+(rcx,r8) (rsi,r8)=(rdx,r8)-(rcx,r8)
|
|
C return 2*add_carry+sub_borrow
|
|
|
|
ASM_START()
|
|
PROLOGUE(mpn_sumdiff_n)
|
|
# Version 1.0.4
|
|
lea (%rsi,%r8,8),%rsi
|
|
lea (%rdx,%r8,8),%rdx
|
|
lea (%rdi,%r8,8),%rdi
|
|
lea (%rcx,%r8,8),%rcx
|
|
neg %r8
|
|
xor %r9,%r9
|
|
xor %r10,%r10
|
|
test $3,%r8
|
|
jz next
|
|
lp1:
|
|
mov (%rdx,%r8,8),%rax
|
|
mov %rax,%r11
|
|
add $1,%r9
|
|
adc (%rcx,%r8,8),%rax
|
|
sbb %r9,%r9
|
|
add $1,%r10
|
|
sbb (%rcx,%r8,8),%r11
|
|
sbb %r10,%r10
|
|
mov %rax,(%rdi,%r8,8)
|
|
mov %r11,(%rsi,%r8,8)
|
|
#inc %r8
|
|
add $1,%r8
|
|
test $3,%r8
|
|
jnz lp1
|
|
next:
|
|
cmp $0,%r8
|
|
jz skiploop
|
|
# linux red zone , change to push/pop and can move to pro/epilog
|
|
mov %rbx,-8(%rsp)
|
|
mov %rbp,-16(%rsp)
|
|
mov %r12,-24(%rsp)
|
|
mov %r13,-32(%rsp)
|
|
mov %r14,-40(%rsp)
|
|
mov %r15,-48(%rsp)
|
|
ALIGN(16)
|
|
loop:
|
|
mov (%rdx,%r8,8),%rax
|
|
mov 8(%rdx,%r8,8),%rbx
|
|
mov 16(%rdx,%r8,8),%rbp
|
|
mov 24(%rdx,%r8,8),%r12
|
|
mov %rax,%r11
|
|
mov %rbx,%r13
|
|
mov %rbp,%r14
|
|
mov %r12,%r15
|
|
add $1,%r9
|
|
adc (%rcx,%r8,8),%rax
|
|
adc 8(%rcx,%r8,8),%rbx
|
|
adc 16(%rcx,%r8,8),%rbp
|
|
adc 24(%rcx,%r8,8),%r12
|
|
sbb %r9,%r9
|
|
add $1,%r10
|
|
sbb (%rcx,%r8,8),%r11
|
|
sbb 8(%rcx,%r8,8),%r13
|
|
sbb 16(%rcx,%r8,8),%r14
|
|
sbb 24(%rcx,%r8,8),%r15
|
|
sbb %r10,%r10
|
|
mov %rax,(%rdi,%r8,8)
|
|
mov %rbx,8(%rdi,%r8,8)
|
|
mov %rbp,16(%rdi,%r8,8)
|
|
mov %r12,24(%rdi,%r8,8)
|
|
mov %r11,(%rsi,%r8,8)
|
|
mov %r13,8(%rsi,%r8,8)
|
|
mov %r14,16(%rsi,%r8,8)
|
|
mov %r15,24(%rsi,%r8,8)
|
|
add $4,%r8
|
|
jnz loop
|
|
mov -8(%rsp),%rbx
|
|
mov -16(%rsp),%rbp
|
|
mov -24(%rsp),%r12
|
|
mov -32(%rsp),%r13
|
|
mov -40(%rsp),%r14
|
|
mov -48(%rsp),%r15
|
|
skiploop:
|
|
lea (%r10,%r9,2),%rax
|
|
neg %rax
|
|
ret
|
|
EPILOGUE()
|