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/*
* mp32opt.i386.S
*
* Assembler optimized multiprecision integer routines for Intel 386 and higher
*
* Compile target is GNU Assembler
*
* Copyright (c) 1998, 1999, 2000, 2001 Virtual Unlimited B.V.
*
* Author: Bob Deblier <bob@virtualunlimited.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "config.gas.h"
.file "mp32opt.i386.S"
.text
C_FUNCTION_BEGIN(mp32zero)
LABEL(mp32zero)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
xorl %eax,%eax
repz stosl
popl %edi
ret
C_FUNCTION_END(mp32zero, LOCAL(mp32zero_size))
C_FUNCTION_BEGIN(mp32fill)
LABEL(mp32fill)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
movl 16(%esp),%eax
repz stosl
popl %edi
ret
C_FUNCTION_END(mp32fill, LOCAL(mp32fill_size))
C_FUNCTION_BEGIN(mp32even)
LABEL(mp32even)
movl 4(%esp),%ecx
movl 8(%esp),%eax
movl -4(%eax,%ecx,4),%eax
notl %eax
andl $1,%eax
ret
C_FUNCTION_END(mp32even, LOCAL(mp32even_size))
C_FUNCTION_BEGIN(mp32odd)
LABEL(mp32odd)
movl 4(%esp),%ecx
movl 8(%esp),%eax
movl -4(%eax,%ecx,4),%eax
andl $1,%eax
ret
C_FUNCTION_END(mp32odd, LOCAL(mp32odd_size))
C_FUNCTION_BEGIN(mp32addw)
LABEL(mp32addw)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
movl 16(%esp),%eax
xorl %edx,%edx
leal -4(%edi,%ecx,4),%edi
addl %eax,(%edi)
decl %ecx
jz LOCAL(mp32addw_skip)
leal -4(%edi),%edi
.align 4
LOCAL(mp32addw_loop):
adcl %edx,(%edi)
leal -4(%edi),%edi
decl %ecx
jnz LOCAL(mp32addw_loop)
LOCAL(mp32addw_skip):
sbbl %eax,%eax
negl %eax
popl %edi
ret
C_FUNCTION_END(mp32addw, LOCAL(mp32addw_size))
C_FUNCTION_BEGIN(mp32subw)
LABEL(mp32subw)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
movl 16(%esp),%eax
xorl %edx,%edx
leal -4(%edi,%ecx,4),%edi
subl %eax,(%edi)
decl %ecx
jz LOCAL(mp32subw_skip)
leal -4(%edi),%edi
.align 4
LOCAL(mp32subw_loop):
sbbl %edx,(%edi)
leal -4(%edi),%edi
decl %ecx
jnz LOCAL(mp32subw_loop)
LOCAL(mp32subw_skip):
sbbl %eax,%eax
negl %eax
popl %edi
ret
C_FUNCTION_END(mp32subw, LOCAL(mp32subw_size))
C_FUNCTION_BEGIN(mp32add)
LABEL(mp32add)
pushl %edi
pushl %esi
movl 12(%esp),%ecx
movl 16(%esp),%edi
movl 20(%esp),%esi
xorl %edx,%edx
decl %ecx
.align 4
LOCAL(mp32add_loop):
movl (%esi,%ecx,4),%eax
adcl %eax,(%edi,%ecx,4)
decl %ecx
jns LOCAL(mp32add_loop)
sbbl %eax,%eax
negl %eax
popl %esi
popl %edi
ret
C_FUNCTION_END(mp32add, LOCAL(mp32add_size))
C_FUNCTION_BEGIN(mp32sub)
LABEL(mp32sub)
pushl %edi
pushl %esi
movl 12(%esp),%ecx
movl 16(%esp),%edi
movl 20(%esp),%esi
xorl %edx,%edx
decl %ecx
.align 4
LOCAL(mp32sub_loop):
movl (%esi,%ecx,4),%eax
sbbl %eax,(%edi,%ecx,4)
decl %ecx
jns LOCAL(mp32sub_loop)
sbbl %eax,%eax
negl %eax
popl %esi
popl %edi
ret
C_FUNCTION_END(mp32sub, LOCAL(mp32sub_size))
C_FUNCTION_BEGIN(mp32divtwo)
LABEL(mp32divtwo)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
leal (%edi,%ecx,4),%edi
negl %ecx
clc
.align 4
LOCAL(mp32divtwo_loop):
rcrl $1,(%edi,%ecx,4)
inc %ecx
jnz LOCAL(mp32divtwo_loop)
popl %edi
ret
C_FUNCTION_END(mp32divtwo, LOCAL(mp32divtwo_size))
C_FUNCTION_BEGIN(mp32multwo)
LABEL(mp32multwo)
pushl %edi
movl 8(%esp),%ecx
movl 12(%esp),%edi
clc
decl %ecx
.align 4
LOCAL(mp32multwo_loop):
rcll $1,(%edi,%ecx,4)
decl %ecx
jns LOCAL(mp32multwo_loop)
sbbl %eax,%eax
negl %eax
popl %edi
ret
C_FUNCTION_END(mp32multwo, LOCAL(mp32multwo_size))
C_FUNCTION_BEGIN(mp32setmul)
LABEL(mp32setmul)
pushl %edi
pushl %esi
pushl %ebx
pushl %ebp
movl 20(%esp),%ecx
movl 24(%esp),%edi
movl 28(%esp),%esi
movl 32(%esp),%ebp
xorl %edx,%edx
decl %ecx
.align 4
LOCAL(mp32setmul_loop):
movl %edx,%ebx
movl (%esi,%ecx,4),%eax
mull %ebp
addl %ebx,%eax
adcl $0,%edx
movl %eax,(%edi,%ecx,4)
decl %ecx
jns LOCAL(mp32setmul_loop)
movl %edx,%eax
popl %ebp
popl %ebx
popl %esi
popl %edi
ret
C_FUNCTION_END(mp32setmul, LOCAL(mp32setmul_size))
C_FUNCTION_BEGIN(mp32addmul)
LABEL(mp32addmul)
pushl %edi
pushl %esi
pushl %ebx
pushl %ebp
movl 20(%esp),%ecx
movl 24(%esp),%edi
movl 28(%esp),%esi
movl 32(%esp),%ebp
xorl %edx,%edx
decl %ecx
.align 4
LOCAL(mp32addmul_loop):
movl %edx,%ebx
movl (%esi,%ecx,4),%eax
mull %ebp
addl %ebx,%eax
adcl $0,%edx
addl (%edi,%ecx,4),%eax
adcl $0,%edx
movl %eax,(%edi,%ecx,4)
decl %ecx
jns LOCAL(mp32addmul_loop)
movl %edx,%eax
popl %ebp
popl %ebx
popl %esi
popl %edi
ret
C_FUNCTION_END(mp32addmul, LOCAL(mp32addmul_size))
C_FUNCTION_BEGIN(mp32addsqrtrc)
LABEL(mp32addsqrtrc)
pushl %edi
pushl %esi
pushl %ebx
movl 16(%esp),%ecx
movl 20(%esp),%edi
movl 24(%esp),%esi
xorl %ebx,%ebx
decl %ecx
.align 4
LOCAL(mp32addsqrtrc_loop):
movl (%esi,%ecx,4),%eax
mull %eax
addl %ebx,%eax
adcl $0,%edx
addl %eax,4(%edi,%ecx,8)
adcl %edx,(%edi,%ecx,8)
sbbl %ebx,%ebx
negl %ebx
decl %ecx
jns LOCAL(mp32addsqrtrc_loop)
movl %ebx,%eax
popl %ebx
popl %esi
popl %edi
ret
C_FUNCTION_END(mp32addsqrtrc, LOCAL(mp32addsqrtrc_size))
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