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/* i80386 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
the result from a second limb vector.
Copyright (C) 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
The GNU MP 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "sysdep.h"
#include "asm-syntax.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
#define RES PARMS
#define S1 RES+PTR_SIZE
#define SIZE S1+PTR_SIZE
#define S2LIMB SIZE+4
#define res_ptr edi
#define s1_ptr esi
#define sizeP ecx
#define s2_limb ebp
.text
ENTRY(__mpn_submul_1)
ENTER
pushl %edi
pushl %esi
pushl %ebx
pushl %ebp
movl RES(%esp), %res_ptr
movl S1(%esp), %s1_ptr
movl SIZE(%esp), %sizeP
movl S2LIMB(%esp), %s2_limb
leal (%res_ptr,%sizeP,4), %res_ptr
leal (%s1_ptr,%sizeP,4), %s1_ptr
negl %sizeP
xorl %ebx, %ebx
ALIGN (3)
L(oop):
movl (%s1_ptr,%sizeP,4), %eax
mull %s2_limb
addl %ebx, %eax
adcl $0, %edx
subl %eax, (%res_ptr,%sizeP,4)
adcl $0, %edx
movl %edx, %ebx
incl %sizeP
jnz L(oop)
movl %ebx, %eax
popl %ebp
popl %ebx
popl %esi
popl %edi
LEAVE
ret
END(__mpn_submul_1)
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