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111
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1 /* Common hooks for MIPS.
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2 Copyright (C) 1989-2017 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #include "config.h"
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21 #include "system.h"
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22 #include "coretypes.h"
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23 #include "tm.h"
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24 #include "common/common-target.h"
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25 #include "common/common-target-def.h"
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26 #include "opts.h"
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27 #include "flags.h"
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28
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29 /* Implement TARGET_HANDLE_OPTION. */
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30
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31 static bool
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32 mips_handle_option (struct gcc_options *opts,
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33 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
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34 const struct cl_decoded_option *decoded,
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35 location_t loc ATTRIBUTE_UNUSED)
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36 {
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37 size_t code = decoded->opt_index;
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38
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39 switch (code)
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40 {
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41 case OPT_mno_flush_func:
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42 opts->x_mips_cache_flush_func = NULL;
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43 return true;
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44
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45 case OPT_mfp32:
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46 case OPT_mfp64:
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47 opts->x_target_flags &= ~MASK_FLOATXX;
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48 return true;
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49
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50 case OPT_mfpxx:
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51 opts->x_target_flags &= ~MASK_FLOAT64;
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52 return true;
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53
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54 default:
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55 return true;
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56 }
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57 }
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58
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59 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
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60 static const struct default_options mips_option_optimization_table[] =
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61 {
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62 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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63 { OPT_LEVELS_NONE, 0, NULL, 0 }
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64 };
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65
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66 #undef TARGET_OPTION_OPTIMIZATION_TABLE
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67 #define TARGET_OPTION_OPTIMIZATION_TABLE mips_option_optimization_table
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68
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69 #undef TARGET_DEFAULT_TARGET_FLAGS
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70 #define TARGET_DEFAULT_TARGET_FLAGS \
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71 (TARGET_DEFAULT \
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72 | TARGET_CPU_DEFAULT \
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73 | TARGET_ENDIAN_DEFAULT \
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74 | MASK_CHECK_ZERO_DIV)
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75 #undef TARGET_HANDLE_OPTION
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76 #define TARGET_HANDLE_OPTION mips_handle_option
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77
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78 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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