126 lines
2.4 KiB
NASM
126 lines
2.4 KiB
NASM
|
dnl mpn_subadd
|
||
|
|
|
||
|
|
dnl Copyright 2011 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_subadd_n)
|
||
|
|
push %rbx
|
||
|
|
xor %r9,%r9
|
||
|
|
push %rbp
|
||
|
|
xor %rax,%rax
|
||
|
|
mov $3,%r10d
|
||
|
|
sub %r8,%r10
|
||
|
|
lea -24(%rdi,%r8,8),%rdi
|
||
|
|
lea -24(%rsi,%r8,8),%rsi
|
||
|
|
lea -24(%rdx,%r8,8),%rdx
|
||
|
|
lea -24(%rcx,%r8,8),%rcx
|
||
|
|
jnc skiplp
|
||
|
|
.align 16
|
||
|
|
lp: sahf
|
||
|
|
mov (%rsi,%r10,8),%r8
|
||
|
|
sbb (%rcx,%r10,8),%r8
|
||
|
|
mov 8(%rsi,%r10,8),%rbx
|
||
|
|
sbb 8(%rcx,%r10,8),%rbx
|
||
|
|
mov 24(%rsi,%r10,8),%r11
|
||
|
|
mov 16(%rsi,%r10,8),%rbp
|
||
|
|
sbb 16(%rcx,%r10,8),%rbp
|
||
|
|
sbb 24(%rcx,%r10,8),%r11
|
||
|
|
lahf
|
||
|
|
add $255,%r9b
|
||
|
|
sbb (%rdx,%r10,8),%r8
|
||
|
|
sbb 8(%rdx,%r10,8),%rbx
|
||
|
|
mov %r8,(%rdi,%r10,8)
|
||
|
|
sbb 16(%rdx,%r10,8),%rbp
|
||
|
|
sbb 24(%rdx,%r10,8),%r11
|
||
|
|
setc %r9b
|
||
|
|
mov %r11,24(%rdi,%r10,8)
|
||
|
|
mov %rbp,16(%rdi,%r10,8)
|
||
|
|
mov %rbx,8(%rdi,%r10,8)
|
||
|
|
add $4,%r10
|
||
|
|
jnc lp
|
||
|
|
skiplp:
|
||
|
|
cmp $2,%r10
|
||
|
|
jg case0
|
||
|
|
je case1
|
||
|
|
jp case2
|
||
|
|
case3: sahf
|
||
|
|
mov (%rsi),%r8
|
||
|
|
sbb (%rcx),%r8
|
||
|
|
mov 8(%rsi),%rbx
|
||
|
|
sbb 8(%rcx),%rbx
|
||
|
|
mov 16(%rsi),%rbp
|
||
|
|
sbb 16(%rcx),%rbp
|
||
|
|
lahf
|
||
|
|
add $255,%r9b
|
||
|
|
sbb (%rdx),%r8
|
||
|
|
sbb 8(%rdx),%rbx
|
||
|
|
mov %r8,(%rdi)
|
||
|
|
sbb 16(%rdx),%rbp
|
||
|
|
setc %r9b
|
||
|
|
mov %rbp,16(%rdi)
|
||
|
|
mov %rbx,8(%rdi)
|
||
|
|
sahf
|
||
|
|
mov $0,%eax
|
||
|
|
adc $0,%rax
|
||
|
|
add $255,%r9b
|
||
|
|
adc $0,%rax
|
||
|
|
pop %rbp
|
||
|
|
pop %rbx
|
||
|
|
ret
|
||
|
|
case2: sahf
|
||
|
|
mov 8(%rsi),%r8
|
||
|
|
sbb 8(%rcx),%r8
|
||
|
|
mov 16(%rsi),%rbx
|
||
|
|
sbb 16(%rcx),%rbx
|
||
|
|
lahf
|
||
|
|
add $255,%r9b
|
||
|
|
sbb 8(%rdx),%r8
|
||
|
|
sbb 16(%rdx),%rbx
|
||
|
|
mov %r8,8(%rdi)
|
||
|
|
setc %r9b
|
||
|
|
mov %rbx,16(%rdi)
|
||
|
|
sahf
|
||
|
|
mov $0,%eax
|
||
|
|
adc $0,%rax
|
||
|
|
add $255,%r9b
|
||
|
|
adc $0,%rax
|
||
|
|
pop %rbp
|
||
|
|
pop %rbx
|
||
|
|
ret
|
||
|
|
case1: sahf
|
||
|
|
mov 16(%rsi),%r8
|
||
|
|
sbb 16(%rcx),%r8
|
||
|
|
lahf
|
||
|
|
add $255,%r9b
|
||
|
|
sbb 16(%rdx),%r8
|
||
|
|
mov %r8,16(%rdi)
|
||
|
|
setc %r9b
|
||
|
|
case0: sahf
|
||
|
|
mov $0,%eax
|
||
|
|
adc $0,%rax
|
||
|
|
add $255,%r9b
|
||
|
|
adc $0,%rax
|
||
|
|
pop %rbp
|
||
|
|
pop %rbx
|
||
|
|
ret
|
||
|
|
EPILOGUE()
|