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

   1 /* Common hooks for pdp11.
   2    Copyright (C) 1994-2019 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_HANDLE_OPTION.  */
  30
  31 static bool
  32 pdp11_handle_option (struct gcc_options *opts,
  33                      struct gcc_options *opts_set ATTRIBUTE_UNUSED,
  34                      const struct cl_decoded_option *decoded,
  35                      location_t loc ATTRIBUTE_UNUSED)
  36 {
  37   size_t code = decoded->opt_index;
  38
  39   switch (code)
  40     {
  41     case OPT_m10:
  42       opts->x_target_flags &= ~(MASK_40 | MASK_45 | MASK_FPU | MASK_AC0 | MASK_SPLIT);
  43       return true;
  44
  45     case OPT_m40:
  46       opts->x_target_flags &= ~(MASK_45 | MASK_FPU | MASK_AC0 | MASK_SPLIT);
  47       return true;
  48
  49     case OPT_mfpu:
  50       opts->x_target_flags &= ~MASK_40;
  51       opts->x_target_flags |= MASK_45;
  52       return true;
  53
  54     case OPT_msoft_float:
  55       opts->x_target_flags &= ~MASK_AC0;
  56       return true;
  57
  58     case OPT_msplit:
  59       opts->x_target_flags &= ~MASK_40;
  60       opts->x_target_flags |= MASK_45;
  61       return true;
  62
  63     case OPT_munix_asm:
  64     case OPT_mgnu_asm:
  65       targetm_common.have_named_sections = false;
  66       return true;
  67
  68     case OPT_mdec_asm:
  69       targetm_common.have_named_sections = true;
  70       return true;
  71
  72     default:
  73       return true;
  74     }
  75 }
  76
  77 /* Implement TARGET_OPTION_INIT_STRUCT.  */
  78
  79 static void
  80 pdp11_option_init_struct (struct gcc_options *opts)
  81 {
  82   opts->x_flag_finite_math_only = 0;
  83   opts->x_flag_trapping_math = 0;
  84   opts->x_flag_signaling_nans = 0;
  85 }
  86
  87 #undef TARGET_DEFAULT_TARGET_FLAGS
  88 #define TARGET_DEFAULT_TARGET_FLAGS \
  89   (MASK_FPU | MASK_45 | TARGET_UNIX_ASM_DEFAULT)
  90 #undef TARGET_HANDLE_OPTION
  91 #define TARGET_HANDLE_OPTION pdp11_handle_option
  92 #undef TARGET_OPTION_INIT_STRUCT
  93 #define TARGET_OPTION_INIT_STRUCT pdp11_option_init_struct
  94
  95 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;