mpir/mpn/x86_64/core2/mul_1.asm
2010-12-17 00:54:02 +00:00

50 lines
1.3 KiB
NASM

dnl mpn_mul_1
dnl Copyright 2010 The Code Cavern
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')
ASM_START()
PROLOGUE(mpn_mul_1)
lea -8(%rsi,%rdx,8),%rsi
lea -8(%rdi,%rdx,8),%rdi
mov $1,%r8d
sub %rdx,%r8
mov (%rsi,%r8,8),%rax
mov $0,%r9d
jz skiplp
ALIGN(16)
lp: mul %rcx
add %r9,%rax
mov %rax,(%rdi,%r8,8)
mov 8(%rsi,%r8,8),%rax
mov $0,%r9d
adc %rdx,%r9
add $1,%r8
jnc lp
skiplp:
mul %rcx
add %r9,%rax
mov %rax,(%rdi,%r8,8)
mov $0,%eax
adc %rdx,%rax
ret
EPILOGUE()