diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/rl78/rl78-mul.h')
-rw-r--r-- | gcc-4.9/libgcc/config/rl78/rl78-mul.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/rl78/rl78-mul.h b/gcc-4.9/libgcc/config/rl78/rl78-mul.h new file mode 100644 index 000000000..29e72a8a7 --- /dev/null +++ b/gcc-4.9/libgcc/config/rl78/rl78-mul.h @@ -0,0 +1,42 @@ +/* libgcc routines for RL78 + Copyright (C) 2005-2014 Free Software Foundation, Inc. + Contributed by Red Hat. + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3, or (at your + option) any later version. + + GCC 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 General Public + License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +UINT_TYPE C3(__mul,NAME_MODE,3) (UINT_TYPE, UINT_TYPE); +UINT_TYPE +C3(__mul,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b) +{ + UINT_TYPE rv = 0; + + char bit; + + for (bit=0; b && bit<sizeof(UINT_TYPE)*8; bit++) + { + if (b & 1) + rv += a; + a <<= 1; + b >>= 1; + } + return rv; +} |