gcc/config/rs6000/e500.h

   1 /* Enable E500 support.
   2    Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software
   3    Foundation, Inc.
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published
   8    by the Free Software Foundation; either version 3, or (at your
   9    option) any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #undef TARGET_SPE_ABI
  21 #undef TARGET_SPE
  22 #undef TARGET_FPRS
  23 #undef TARGET_E500_SINGLE
  24 #undef TARGET_E500_DOUBLE
  25 #undef CHECK_E500_OPTIONS
  26
  27 #define TARGET_SPE_ABI rs6000_spe_abi
  28 #define TARGET_SPE rs6000_spe
  29 #define TARGET_FPRS (rs6000_float_gprs == 0)
  30 #define TARGET_E500_SINGLE (TARGET_HARD_FLOAT && rs6000_float_gprs == 1)
  31 #define TARGET_E500_DOUBLE (TARGET_HARD_FLOAT && rs6000_float_gprs == 2)
  32 #define CHECK_E500_OPTIONS                                              \
  33   do {                                                                  \
  34     if (TARGET_SPE || TARGET_SPE_ABI                                    \
  35         || TARGET_E500_SINGLE || TARGET_E500_DOUBLE)                    \
  36       {                                                                 \
  37         if (TARGET_ALTIVEC)                                             \
  38           error ("AltiVec and SPE instructions cannot coexist");        \
  39         if (TARGET_VSX)                                                 \
  40           error ("VSX and SPE instructions cannot coexist");            \
  41         if (TARGET_64BIT)                                               \
  42           error ("64-bit SPE not supported");                           \
  43         if (TARGET_HARD_FLOAT && TARGET_FPRS)                           \
  44           error ("E500 and FPRs not supported");                        \
  45       }                                                                 \
  46   } while (0)
  47
  48 /* Override rs6000.h definition.  */
  49 #undef HARD_REGNO_CALLER_SAVE_MODE
  50 /* When setting up caller-save slots (MODE == VOIDmode) ensure we
  51    allocate space for DFmode.  Save gprs in the correct mode too.  */
  52 #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \
  53   (TARGET_E500_DOUBLE && ((MODE) == VOIDmode || (MODE) == DFmode)       \
  54    ? DFmode                                                             \
  55    : choose_hard_reg_mode ((REGNO), (NREGS), false))