libgcc/config/msp430/lib2mul.c

   1 /* libgcc routines for MSP430
   2    Copyright (C) 2005-2019 Free Software Foundation, Inc.
   3    Contributed by Red Hat.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    Under Section 7 of GPL version 3, you are granted additional
  18    permissions described in the GCC Runtime Library Exception, version
  19    3.1, as published by the Free Software Foundation.
  20
  21    You should have received a copy of the GNU General Public License and
  22    a copy of the GCC Runtime Library Exception along with this program;
  23    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24    <http://www.gnu.org/licenses/>.  */
  25
  26 typedef unsigned int  uint32_type   __attribute__ ((mode (SI)));
  27 typedef unsigned int  uint16_type   __attribute__ ((mode (HI)));
  28 typedef unsigned int  uint08_type   __attribute__ ((mode (QI)));
  29
  30 #define C3B(a,b,c) a##b##c
  31 #define C3(a,b,c) C3B(a,b,c)
  32
  33 #if defined MUL_NONE
  34
  35 /* The software multiply library needs __mspabi_mpyll.  */
  36
  37 #undef UINT_TYPE
  38 #undef BITS_MINUS_1
  39 #undef NAME_MODE
  40
  41 #define UINT_TYPE       uint32_type
  42 #define BITS_MINUS_1    31
  43 #define NAME_MODE       si
  44
  45 #include "msp430-mul.h"
  46
  47 #elif defined MUL_16
  48
  49 /* The 16-bit multiply library needs a software version of SI->DI widening
  50    multiplication.  */
  51
  52 signed long long
  53 __mspabi_mpysll (signed long a, signed long b)
  54 {
  55   return (signed long long) a * (signed long long) b;
  56 }
  57
  58 unsigned long long
  59 __mspabi_mpyull (unsigned long a, unsigned long b)
  60 {
  61   return (unsigned long long) a * (unsigned long long) b;
  62 }
  63
  64 #else
  65
  66 #undef UINT_TYPE
  67 #undef BITS_MINUS_1
  68 #undef NAME_MODE
  69
  70 #define UINT_TYPE       uint08_type
  71 #define BITS_MINUS_1    7
  72 #define NAME_MODE       qi
  73
  74 #include "msp430-mul.h"
  75
  76 #endif /* MUL_NONE */