mirror of git://sourceware.org/git/glibc.git
50 lines
1.5 KiB
ArmAsm
50 lines
1.5 KiB
ArmAsm
/* Multiply a limb vector by a single limb, for PowerPC.
|
|
Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C 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 C 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 C 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>
|
|
|
|
/* mp_limb_t mpn_addmul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr,
|
|
mp_size_t s1_size, mp_limb_t s2_limb)
|
|
Calculate res+s1*s2 and put result back in res; return carry. */
|
|
ENTRY(__mpn_addmul_1)
|
|
mtctr %r5
|
|
|
|
lwz %r0,0(%r4)
|
|
mullw %r7,%r0,%r6
|
|
mulhwu %r10,%r0,%r6
|
|
lwz %r9,0(%r3)
|
|
addc %r8,%r7,%r9
|
|
addi %r3,%r3,-4 /* adjust res_ptr */
|
|
bdz 1f
|
|
|
|
0: lwzu %r0,4(%r4)
|
|
stwu %r8,4(%r3)
|
|
mullw %r8,%r0,%r6
|
|
adde %r7,%r8,%r10
|
|
mulhwu %r10,%r0,%r6
|
|
lwz %r9,4(%r3)
|
|
addze %r10,%r10
|
|
addc %r8,%r7,%r9
|
|
bdnz 0b
|
|
|
|
1: stw %r8,4(%r3)
|
|
addze %r3,%r10
|
|
blr
|
|
END(__mpn_addmul_1)
|