111 lines
2.5 KiB
NASM
111 lines
2.5 KiB
NASM
|
dnl AMD64 mpn_lshift1
|
||
|
|
|
||
|
|
dnl Copyright 2008 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,rdx)=(rsi,rdx)<<1
|
||
|
|
C rax=carry
|
||
|
|
|
||
|
|
ASM_START()
|
||
|
|
PROLOGUE(mpn_lshift1)
|
||
|
|
# Version 1.0.4
|
||
|
|
xor %rax,%rax
|
||
|
|
mov %rdx,%r11
|
||
|
|
and $7,%r11
|
||
|
|
inc %r11
|
||
|
|
shr $3,%rdx
|
||
|
|
# and clear carry flag
|
||
|
|
cmp $0,%rdx
|
||
|
|
jz next
|
||
|
|
ALIGN(16)
|
||
|
|
loop:
|
||
|
|
mov (%rsi),%rcx
|
||
|
|
mov 8(%rsi),%r8
|
||
|
|
mov 16(%rsi),%r10
|
||
|
|
mov 24(%rsi),%r9
|
||
|
|
adc %rcx,%rcx
|
||
|
|
adc %r8,%r8
|
||
|
|
adc %r10,%r10
|
||
|
|
adc %r9,%r9
|
||
|
|
mov %rcx,(%rdi)
|
||
|
|
mov %r8,8(%rdi)
|
||
|
|
mov %r10,16(%rdi)
|
||
|
|
mov %r9,24(%rdi)
|
||
|
|
|
||
|
|
mov 32(%rsi),%rcx
|
||
|
|
mov 40(%rsi),%r8
|
||
|
|
mov 48(%rsi),%r10
|
||
|
|
mov 56(%rsi),%r9
|
||
|
|
adc %rcx,%rcx
|
||
|
|
adc %r8,%r8
|
||
|
|
adc %r10,%r10
|
||
|
|
adc %r9,%r9
|
||
|
|
mov %rcx,32(%rdi)
|
||
|
|
mov %r8,40(%rdi)
|
||
|
|
mov %r10,48(%rdi)
|
||
|
|
mov %r9,56(%rdi)
|
||
|
|
|
||
|
|
lea 64(%rdi),%rdi
|
||
|
|
dec %rdx
|
||
|
|
lea 64(%rsi),%rsi
|
||
|
|
jnz loop
|
||
|
|
next:
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
# Could still have cache-bank conflicts in this tail part
|
||
|
|
mov (%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 8(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,8(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 16(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,16(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 24(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,24(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 32(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,32(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 40(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,40(%rdi)
|
||
|
|
dec %r11
|
||
|
|
jz end
|
||
|
|
mov 48(%rsi),%rcx
|
||
|
|
adc %rcx,%rcx
|
||
|
|
mov %rcx,48(%rdi)
|
||
|
|
end:
|
||
|
|
adc %rax,%rax
|
||
|
|
ret
|
||
|
|
EPILOGUE()
|