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/* Pentium __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
the result from a second limb vector.
Copyright (C) 1992, 94, 96, 97, 98, 00 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-sym.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 size ecx
#define s2_limb ebx
.text
ENTRY (BP_SYM (__mpn_submul_1))
ENTER
pushl %edi
pushl %esi
pushl %ebp
pushl %ebx
movl RES(%esp), %res_ptr
movl S1(%esp), %s1_ptr
movl SIZE(%esp), %size
movl S2LIMB(%esp), %s2_limb
#if __BOUNDED_POINTERS__
shll $2, %sizeP /* convert limbs to bytes */
CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP)
CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP)
shrl $2, %sizeP
#endif
leal (%res_ptr,%size,4), %res_ptr
leal (%s1_ptr,%size,4), %s1_ptr
negl %size
xorl %ebp, %ebp
ALIGN (3)
L(oop): adcl $0, %ebp
movl (%s1_ptr,%size,4), %eax
mull %s2_limb
addl %ebp, %eax
movl (%res_ptr,%size,4), %ebp
adcl $0, %edx
subl %eax, %ebp
movl %ebp, (%res_ptr,%size,4)
incl %size
movl %edx, %ebp
jnz L(oop)
adcl $0, %ebp
movl %ebp, %eax
popl %ebx
popl %ebp
popl %esi
popl %edi
LEAVE
ret
#undef size
END (BP_SYM (__mpn_submul_1))
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