98 lines
2.0 KiB
NASM
98 lines
2.0 KiB
NASM
dnl core2 mpn_sublsh1_n
|
|
|
|
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,rcx)=(rsi,rcx)-(rdx,rcx)<<1
|
|
C rax=borrow
|
|
|
|
ASM_START()
|
|
PROLOGUE(mpn_sublsh1_n)
|
|
# Version 1.0.3
|
|
lea (%rsi,%rcx,8),%rsi
|
|
lea (%rdx,%rcx,8),%rdx
|
|
lea (%rdi,%rcx,8),%rdi
|
|
neg %rcx
|
|
xor %r9,%r9
|
|
xor %rax,%rax
|
|
test $3,%rcx
|
|
jz next
|
|
lp1:
|
|
mov (%rsi,%rcx,8),%r10
|
|
add $1,%r9
|
|
sbb (%rdx,%rcx,8),%r10
|
|
sbb %r9,%r9
|
|
add $1,%rax
|
|
sbb (%rdx,%rcx,8),%r10
|
|
sbb %rax,%rax
|
|
mov %r10,(%rdi,%rcx,8)
|
|
#inc %rcx
|
|
add $1,%rcx
|
|
test $3,%rcx
|
|
jnz lp1
|
|
next:
|
|
cmp $0,%rcx
|
|
jz end
|
|
# push/pops can be moved to pro/epilog
|
|
push %r15
|
|
push %r14
|
|
push %r13
|
|
push %r12
|
|
push %rbx
|
|
ALIGN(16)
|
|
lp:
|
|
mov (%rsi,%rcx,8),%r10
|
|
mov 8(%rsi,%rcx,8),%rbx
|
|
mov 16(%rsi,%rcx,8),%r11
|
|
mov 24(%rsi,%rcx,8),%r8
|
|
mov (%rdx,%rcx,8),%r12
|
|
mov 8(%rdx,%rcx,8),%r13
|
|
mov 16(%rdx,%rcx,8),%r14
|
|
mov 24(%rdx,%rcx,8),%r15
|
|
add $1,%r9
|
|
sbb %r12,%r10
|
|
sbb %r13,%rbx
|
|
sbb %r14,%r11
|
|
sbb %r15,%r8
|
|
sbb %r9,%r9
|
|
add $1,%rax
|
|
sbb %r12,%r10
|
|
sbb %r13,%rbx
|
|
sbb %r14,%r11
|
|
sbb %r15,%r8
|
|
sbb %rax,%rax
|
|
mov %r10,(%rdi,%rcx,8)
|
|
mov %rbx,8(%rdi,%rcx,8)
|
|
mov %r11,16(%rdi,%rcx,8)
|
|
mov %r8,24(%rdi,%rcx,8)
|
|
add $4,%rcx
|
|
jnz lp
|
|
pop %rbx
|
|
pop %r12
|
|
pop %r13
|
|
pop %r14
|
|
pop %r15
|
|
end:
|
|
add %r9,%rax
|
|
neg %rax
|
|
ret
|
|
EPILOGUE()
|