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111
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1 /* Common hooks for NEC V850 series.
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2 Copyright (C) 1996-2017 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 it
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7 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, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 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 "diagnostic-core.h"
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24 #include "tm.h"
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25 #include "common/common-target.h"
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26 #include "common/common-target-def.h"
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27 #include "opts.h"
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28 #include "flags.h"
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29
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30 /* Information about the various small memory areas. */
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31 static const int small_memory_physical_max[(int) SMALL_MEMORY_max] =
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32 {
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33 256,
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34 65536,
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35 32768,
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36 };
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37
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38 /* Set the maximum size of small memory area TYPE to the value given
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39 by SIZE in structure OPTS (option text OPT passed at location LOC). */
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40
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41 static void
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42 v850_handle_memory_option (enum small_memory_type type,
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43 struct gcc_options *opts, const char *opt,
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44 int size, location_t loc)
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45 {
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46 if (size > small_memory_physical_max[type])
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47 error_at (loc, "value passed in %qs is too large", opt);
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48 else
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49 opts->x_small_memory_max[type] = size;
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50 }
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51
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52 /* Implement TARGET_HANDLE_OPTION. */
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53
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54 static bool
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55 v850_handle_option (struct gcc_options *opts,
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56 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
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57 const struct cl_decoded_option *decoded,
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58 location_t loc)
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59 {
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60 size_t code = decoded->opt_index;
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61 int value = decoded->value;
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62
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63 switch (code)
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64 {
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65 case OPT_mspace:
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66 opts->x_target_flags |= MASK_EP | MASK_PROLOG_FUNCTION;
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67 return true;
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68
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69 case OPT_mv850:
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70 opts->x_target_flags &= ~(MASK_CPU ^ MASK_V850);
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71 return true;
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72
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73 case OPT_mv850e:
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74 case OPT_mv850e1:
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75 case OPT_mv850es:
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76 opts->x_target_flags &= ~(MASK_CPU ^ MASK_V850E);
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77 return true;
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78
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79 case OPT_mv850e2:
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80 opts->x_target_flags &= ~(MASK_CPU ^ MASK_V850E2);
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81 return true;
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82
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83 case OPT_mv850e2v3:
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84 opts->x_target_flags &= ~(MASK_CPU ^ MASK_V850E2V3);
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85 return true;
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86
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87 case OPT_mtda_:
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88 v850_handle_memory_option (SMALL_MEMORY_TDA, opts,
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89 decoded->orig_option_with_args_text,
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90 value, loc);
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91 return true;
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92
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93 case OPT_msda_:
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94 v850_handle_memory_option (SMALL_MEMORY_SDA, opts,
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95 decoded->orig_option_with_args_text,
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96 value, loc);
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97 return true;
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98
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99 case OPT_mzda_:
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100 v850_handle_memory_option (SMALL_MEMORY_ZDA, opts,
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101 decoded->orig_option_with_args_text,
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102 value, loc);
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103 return true;
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104
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105 default:
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106 return true;
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107 }
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108 }
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109
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110 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
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111
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112 static const struct default_options v850_option_optimization_table[] =
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113 {
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114 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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115 /* Note - we no longer enable MASK_EP when optimizing. This is
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116 because of a hardware bug which stops the SLD and SST instructions
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117 from correctly detecting some hazards. If the user is sure that
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118 their hardware is fixed or that their program will not encounter
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119 the conditions that trigger the bug then they can enable -mep by
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120 hand. */
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121 { OPT_LEVELS_1_PLUS, OPT_mprolog_function, NULL, 1 },
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122 { OPT_LEVELS_NONE, 0, NULL, 0 }
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123 };
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124
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125 #undef TARGET_DEFAULT_TARGET_FLAGS
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126 #define TARGET_DEFAULT_TARGET_FLAGS (MASK_DEFAULT | MASK_APP_REGS)
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127 #undef TARGET_HANDLE_OPTION
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128 #define TARGET_HANDLE_OPTION v850_handle_option
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129 #undef TARGET_OPTION_OPTIMIZATION_TABLE
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130 #define TARGET_OPTION_OPTIMIZATION_TABLE v850_option_optimization_table
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131
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132 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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