gcc/common/config/pdp11/pdp11-common.c

   1 /* Common hooks for pdp11.
   2    Copyright (C) 1994-2016 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public 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 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "common/common-target.h"
  25 #include "common/common-target-def.h"
  26 #include "opts.h"
  27 #include "flags.h"
  28
  29 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */
  30
  31 static const struct default_options pdp11_option_optimization_table[] =
  32   {
  33     { OPT_LEVELS_3_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
  34     { OPT_LEVELS_NONE, 0, NULL, 0 }
  35   };
  36
  37 /* Implement TARGET_HANDLE_OPTION.  */
  38
  39 static bool
  40 pdp11_handle_option (struct gcc_options *opts,
  41                      struct gcc_options *opts_set ATTRIBUTE_UNUSED,
  42                      const struct cl_decoded_option *decoded,
  43                      location_t loc ATTRIBUTE_UNUSED)
  44 {
  45   size_t code = decoded->opt_index;
  46
  47   switch (code)
  48     {
  49     case OPT_m10:
  50       opts->x_target_flags &= ~(MASK_40 | MASK_45);
  51       return true;
  52
  53     default:
  54       return true;
  55     }
  56 }
  57
  58 /* Implement TARGET_OPTION_INIT_STRUCT.  */
  59
  60 static void
  61 pdp11_option_init_struct (struct gcc_options *opts)
  62 {
  63   opts->x_flag_finite_math_only = 0;
  64   opts->x_flag_trapping_math = 0;
  65   opts->x_flag_signaling_nans = 0;
  66 }
  67
  68 #undef TARGET_DEFAULT_TARGET_FLAGS
  69 #define TARGET_DEFAULT_TARGET_FLAGS \
  70   (MASK_FPU | MASK_45 | TARGET_UNIX_ASM_DEFAULT)
  71 #undef TARGET_HANDLE_OPTION
  72 #define TARGET_HANDLE_OPTION pdp11_handle_option
  73 #undef TARGET_OPTION_OPTIMIZATION_TABLE
  74 #define TARGET_OPTION_OPTIMIZATION_TABLE pdp11_option_optimization_table
  75 #undef TARGET_OPTION_INIT_STRUCT
  76 #define TARGET_OPTION_INIT_STRUCT pdp11_option_init_struct
  77
  78 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;