diff options
Diffstat (limited to 'mpi/powerpc32/mpih-mul2.S')
| -rw-r--r-- | mpi/powerpc32/mpih-mul2.S | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/mpi/powerpc32/mpih-mul2.S b/mpi/powerpc32/mpih-mul2.S index 0b6486ee..9577c282 100644 --- a/mpi/powerpc32/mpih-mul2.S +++ b/mpi/powerpc32/mpih-mul2.S @@ -1,6 +1,6 @@ /* PowerPC-32 addmul_1 -- Multiply a limb vector with a limb and add * the result to a second limb vector. - + * * Copyright (C) 1995, 1998 Free Software Foundation, Inc. * * This file is part of GnuPG. @@ -20,6 +20,11 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ +#include "sysdep.h" +#include "asm-syntax.h" + + +#ifndef USE_PPC_PATCHES /******************* * mpi_limb_t @@ -70,4 +75,53 @@ Lend: stw 8,4(3) addze 3,10 blr +#else +/* 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. */ + + +/* 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(_mpihelp_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(_mpihelp_addmul_1) +#endif |