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111
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1 /* Copyright (C) 2009-2017 Free Software Foundation, Inc.
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2 Contributed by Anatoly Sokolov (aesok@post.ru)
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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 /* Not included in avr.c since this requires C front end. */
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21
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22 #include "config.h"
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23 #include "system.h"
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24 #include "coretypes.h"
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25 #include "target.h"
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26 #include "c-family/c-common.h"
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27 #include "stor-layout.h"
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28 #include "langhooks.h"
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29 #include "memmodel.h"
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30 #include "tm_p.h"
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31
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32 /* IDs for all the AVR builtins. */
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33
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34 enum avr_builtin_id
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35 {
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36 #define DEF_BUILTIN(NAME, N_ARGS, TYPE, CODE, LIBNAME) \
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37 AVR_BUILTIN_ ## NAME,
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38 #include "builtins.def"
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39 #undef DEF_BUILTIN
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40
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41 AVR_BUILTIN_COUNT
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42 };
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43
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44
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45 /* Implement `TARGET_RESOLVE_OVERLOADED_PLUGIN'. */
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46
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47 static tree
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48 avr_resolve_overloaded_builtin (unsigned int iloc, tree fndecl, void *vargs)
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49 {
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50 tree type0, type1, fold = NULL_TREE;
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51 enum avr_builtin_id id = AVR_BUILTIN_COUNT;
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52 location_t loc = (location_t) iloc;
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53 vec<tree, va_gc> &args = * (vec<tree, va_gc>*) vargs;
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54
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55 switch (DECL_FUNCTION_CODE (fndecl))
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56 {
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57 default:
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58 break;
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59
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60 case AVR_BUILTIN_ABSFX:
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61 if (args.length() != 1)
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62 {
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63 error_at (loc, "%qs expects 1 argument but %d given",
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64 "absfx", (int) args.length());
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65
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66 fold = error_mark_node;
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67 break;
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68 }
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69
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70 type0 = TREE_TYPE (args[0]);
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71
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72 if (!FIXED_POINT_TYPE_P (type0))
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73 {
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74 error_at (loc, "%qs expects a fixed-point value as argument",
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75 "absfx");
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76
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77 fold = error_mark_node;
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78 }
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79
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80 switch (TYPE_MODE (type0))
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81 {
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82 case E_QQmode: id = AVR_BUILTIN_ABSHR; break;
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83 case E_HQmode: id = AVR_BUILTIN_ABSR; break;
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84 case E_SQmode: id = AVR_BUILTIN_ABSLR; break;
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85 case E_DQmode: id = AVR_BUILTIN_ABSLLR; break;
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86
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87 case E_HAmode: id = AVR_BUILTIN_ABSHK; break;
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88 case E_SAmode: id = AVR_BUILTIN_ABSK; break;
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89 case E_DAmode: id = AVR_BUILTIN_ABSLK; break;
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90 case E_TAmode: id = AVR_BUILTIN_ABSLLK; break;
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91
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92 case E_UQQmode:
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93 case E_UHQmode:
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94 case E_USQmode:
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95 case E_UDQmode:
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96 case E_UHAmode:
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97 case E_USAmode:
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98 case E_UDAmode:
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99 case E_UTAmode:
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100 warning_at (loc, 0, "using %qs with unsigned type has no effect",
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101 "absfx");
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102 return args[0];
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103
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104 default:
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105 error_at (loc, "no matching fixed-point overload found for %qs",
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106 "absfx");
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107
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108 fold = error_mark_node;
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109 break;
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110 }
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111
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112 fold = targetm.builtin_decl (id, true);
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113
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114 if (fold != error_mark_node)
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115 fold = build_function_call_vec (loc, vNULL, fold, &args, NULL);
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116
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117 break; // absfx
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118
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119 case AVR_BUILTIN_ROUNDFX:
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120 if (args.length() != 2)
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121 {
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122 error_at (loc, "%qs expects 2 arguments but %d given",
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123 "roundfx", (int) args.length());
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124
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125 fold = error_mark_node;
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126 break;
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127 }
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128
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129 type0 = TREE_TYPE (args[0]);
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130 type1 = TREE_TYPE (args[1]);
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131
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132 if (!FIXED_POINT_TYPE_P (type0))
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133 {
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134 error_at (loc, "%qs expects a fixed-point value as first argument",
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135 "roundfx");
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136
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137 fold = error_mark_node;
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138 }
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139
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140 if (!INTEGRAL_TYPE_P (type1))
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141 {
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142 error_at (loc, "%qs expects an integer value as second argument",
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143 "roundfx");
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144
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145 fold = error_mark_node;
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146 }
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147
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148 switch (TYPE_MODE (type0))
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149 {
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150 case E_QQmode: id = AVR_BUILTIN_ROUNDHR; break;
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151 case E_HQmode: id = AVR_BUILTIN_ROUNDR; break;
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152 case E_SQmode: id = AVR_BUILTIN_ROUNDLR; break;
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153 case E_DQmode: id = AVR_BUILTIN_ROUNDLLR; break;
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154
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155 case E_UQQmode: id = AVR_BUILTIN_ROUNDUHR; break;
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156 case E_UHQmode: id = AVR_BUILTIN_ROUNDUR; break;
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157 case E_USQmode: id = AVR_BUILTIN_ROUNDULR; break;
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158 case E_UDQmode: id = AVR_BUILTIN_ROUNDULLR; break;
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159
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160 case E_HAmode: id = AVR_BUILTIN_ROUNDHK; break;
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161 case E_SAmode: id = AVR_BUILTIN_ROUNDK; break;
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162 case E_DAmode: id = AVR_BUILTIN_ROUNDLK; break;
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163 case E_TAmode: id = AVR_BUILTIN_ROUNDLLK; break;
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164
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165 case E_UHAmode: id = AVR_BUILTIN_ROUNDUHK; break;
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166 case E_USAmode: id = AVR_BUILTIN_ROUNDUK; break;
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167 case E_UDAmode: id = AVR_BUILTIN_ROUNDULK; break;
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168 case E_UTAmode: id = AVR_BUILTIN_ROUNDULLK; break;
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169
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170 default:
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171 error_at (loc, "no matching fixed-point overload found for %qs",
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172 "roundfx");
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173
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174 fold = error_mark_node;
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175 break;
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176 }
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177
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178 fold = targetm.builtin_decl (id, true);
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179
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180 if (fold != error_mark_node)
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181 fold = build_function_call_vec (loc, vNULL, fold, &args, NULL);
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182
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183 break; // roundfx
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184
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185 case AVR_BUILTIN_COUNTLSFX:
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186 if (args.length() != 1)
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187 {
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188 error_at (loc, "%qs expects 1 argument but %d given",
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189 "countlsfx", (int) args.length());
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190
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191 fold = error_mark_node;
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192 break;
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193 }
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194
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195 type0 = TREE_TYPE (args[0]);
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196
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197 if (!FIXED_POINT_TYPE_P (type0))
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198 {
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199 error_at (loc, "%qs expects a fixed-point value as first argument",
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200 "countlsfx");
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201
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202 fold = error_mark_node;
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203 }
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204
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205 switch (TYPE_MODE (type0))
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206 {
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207 case E_QQmode: id = AVR_BUILTIN_COUNTLSHR; break;
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208 case E_HQmode: id = AVR_BUILTIN_COUNTLSR; break;
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209 case E_SQmode: id = AVR_BUILTIN_COUNTLSLR; break;
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210 case E_DQmode: id = AVR_BUILTIN_COUNTLSLLR; break;
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211
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212 case E_UQQmode: id = AVR_BUILTIN_COUNTLSUHR; break;
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213 case E_UHQmode: id = AVR_BUILTIN_COUNTLSUR; break;
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214 case E_USQmode: id = AVR_BUILTIN_COUNTLSULR; break;
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215 case E_UDQmode: id = AVR_BUILTIN_COUNTLSULLR; break;
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216
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217 case E_HAmode: id = AVR_BUILTIN_COUNTLSHK; break;
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218 case E_SAmode: id = AVR_BUILTIN_COUNTLSK; break;
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219 case E_DAmode: id = AVR_BUILTIN_COUNTLSLK; break;
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220 case E_TAmode: id = AVR_BUILTIN_COUNTLSLLK; break;
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221
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222 case E_UHAmode: id = AVR_BUILTIN_COUNTLSUHK; break;
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223 case E_USAmode: id = AVR_BUILTIN_COUNTLSUK; break;
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224 case E_UDAmode: id = AVR_BUILTIN_COUNTLSULK; break;
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225 case E_UTAmode: id = AVR_BUILTIN_COUNTLSULLK; break;
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226
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227 default:
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228 error_at (loc, "no matching fixed-point overload found for %qs",
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229 "countlsfx");
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230
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231 fold = error_mark_node;
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232 break;
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233 }
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234
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235 fold = targetm.builtin_decl (id, true);
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236
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237 if (fold != error_mark_node)
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238 fold = build_function_call_vec (loc, vNULL, fold, &args, NULL);
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239
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240 break; // countlsfx
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241 }
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242
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243 return fold;
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244 }
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245
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246
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247 /* Implement `REGISTER_TARGET_PRAGMAS'. */
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248
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249 void
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250 avr_register_target_pragmas (void)
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251 {
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252 gcc_assert (ADDR_SPACE_GENERIC == ADDR_SPACE_RAM);
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253
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254 /* Register address spaces. The order must be the same as in the respective
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255 enum from avr.h (or designated initializers must be used in avr.c).
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256 We always register all address spaces even if some of them make no
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257 sense for some targets. Diagnose for non-supported spaces will be
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258 emit by TARGET_ADDR_SPACE_DIAGNOSE_USAGE. */
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259
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260 for (int i = 0; i < ADDR_SPACE_COUNT; i++)
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261 {
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262 gcc_assert (i == avr_addrspace[i].id);
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263
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264 if (!ADDR_SPACE_GENERIC_P (i))
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265 c_register_addr_space (avr_addrspace[i].name, avr_addrspace[i].id);
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266 }
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267
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268 targetm.resolve_overloaded_builtin = avr_resolve_overloaded_builtin;
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269 }
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270
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271
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272 /* Transform LO into uppercase and write the result to UP.
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273 You must provide enough space for UP. Return UP. */
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274
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275 static char*
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276 avr_toupper (char *up, const char *lo)
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277 {
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278 char *up0 = up;
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279
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280 for (; *lo; lo++, up++)
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281 *up = TOUPPER (*lo);
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282
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283 *up = '\0';
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284
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285 return up0;
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286 }
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287
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288 /* Worker function for TARGET_CPU_CPP_BUILTINS. */
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289
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290 void
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291 avr_cpu_cpp_builtins (struct cpp_reader *pfile)
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292 {
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293 builtin_define_std ("AVR");
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294
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295 /* __AVR_DEVICE_NAME__ and avr_mcu_types[].macro like __AVR_ATmega8__
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296 are defined by -D command option, see device-specs file. */
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297
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298 if (avr_arch->macro)
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299 cpp_define_formatted (pfile, "__AVR_ARCH__=%s", avr_arch->macro);
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300 if (AVR_HAVE_RAMPD) cpp_define (pfile, "__AVR_HAVE_RAMPD__");
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301 if (AVR_HAVE_RAMPX) cpp_define (pfile, "__AVR_HAVE_RAMPX__");
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302 if (AVR_HAVE_RAMPY) cpp_define (pfile, "__AVR_HAVE_RAMPY__");
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303 if (AVR_HAVE_RAMPZ) cpp_define (pfile, "__AVR_HAVE_RAMPZ__");
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304 if (AVR_HAVE_ELPM) cpp_define (pfile, "__AVR_HAVE_ELPM__");
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305 if (AVR_HAVE_ELPMX) cpp_define (pfile, "__AVR_HAVE_ELPMX__");
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306 if (AVR_HAVE_MOVW) cpp_define (pfile, "__AVR_HAVE_MOVW__");
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307 if (AVR_HAVE_LPMX) cpp_define (pfile, "__AVR_HAVE_LPMX__");
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308
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309 if (avr_arch->asm_only)
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310 cpp_define (pfile, "__AVR_ASM_ONLY__");
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311 if (AVR_HAVE_MUL)
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312 {
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313 cpp_define (pfile, "__AVR_ENHANCED__");
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314 cpp_define (pfile, "__AVR_HAVE_MUL__");
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315 }
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316
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317 if (AVR_HAVE_JMP_CALL)
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318 cpp_define (pfile, "__AVR_HAVE_JMP_CALL__");
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319
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320 if (avr_arch->have_jmp_call)
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321 cpp_define (pfile, "__AVR_MEGA__");
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322
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323 if (AVR_SHORT_CALLS)
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324 cpp_define (pfile, "__AVR_SHORT_CALLS__");
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325
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326 if (AVR_XMEGA)
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327 cpp_define (pfile, "__AVR_XMEGA__");
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328
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329 if (AVR_TINY)
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330 {
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331 cpp_define (pfile, "__AVR_TINY__");
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332
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333 /* Define macro "__AVR_TINY_PM_BASE_ADDRESS__" with mapped program memory
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334 start address. This macro shall be used where mapped program
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335 memory is accessed, eg. copying data section (__do_copy_data)
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336 contents to data memory region.
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337 NOTE:
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338 Program memory of AVR_TINY devices cannot be accessed directly,
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339 it has been mapped to the data memory. For AVR_TINY devices
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340 (ATtiny4/5/9/10/20 and 40) mapped program memory starts at 0x4000. */
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341
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342 cpp_define_formatted (pfile, "__AVR_TINY_PM_BASE_ADDRESS__=0x%x",
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343 avr_arch->flash_pm_offset);
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344 }
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345
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346 if (avr_arch->flash_pm_offset)
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347 cpp_define_formatted (pfile, "__AVR_PM_BASE_ADDRESS__=0x%x",
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348 avr_arch->flash_pm_offset);
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349
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350 if (AVR_HAVE_EIJMP_EICALL)
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351 {
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352 cpp_define (pfile, "__AVR_HAVE_EIJMP_EICALL__");
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353 cpp_define (pfile, "__AVR_3_BYTE_PC__");
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354 }
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355 else
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356 {
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357 cpp_define (pfile, "__AVR_2_BYTE_PC__");
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358 }
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359
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360 if (AVR_HAVE_8BIT_SP)
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361 cpp_define (pfile, "__AVR_HAVE_8BIT_SP__");
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362 else
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363 cpp_define (pfile, "__AVR_HAVE_16BIT_SP__");
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364
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365 if (AVR_HAVE_SPH)
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366 cpp_define (pfile, "__AVR_HAVE_SPH__");
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367 else
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368 cpp_define (pfile, "__AVR_SP8__");
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369
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370 if (TARGET_NO_INTERRUPTS)
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371 cpp_define (pfile, "__NO_INTERRUPTS__");
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372
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373 if (TARGET_SKIP_BUG)
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374 {
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375 cpp_define (pfile, "__AVR_ERRATA_SKIP__");
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376
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377 if (AVR_HAVE_JMP_CALL)
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378 cpp_define (pfile, "__AVR_ERRATA_SKIP_JMP_CALL__");
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379 }
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380
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381 if (TARGET_RMW)
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382 cpp_define (pfile, "__AVR_ISA_RMW__");
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383
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384 cpp_define_formatted (pfile, "__AVR_SFR_OFFSET__=0x%x",
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385 avr_arch->sfr_offset);
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386
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387 #ifdef WITH_AVRLIBC
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388 cpp_define (pfile, "__WITH_AVRLIBC__");
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389 #endif /* WITH_AVRLIBC */
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390
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391 /* Define builtin macros so that the user can easily query whether
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392 non-generic address spaces (and which) are supported or not.
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393 This is only supported for C. For C++, a language extension is needed
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394 (as mentioned in ISO/IEC DTR 18037; Annex F.2) which is not
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395 implemented in GCC up to now. */
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396
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397 if (lang_GNU_C ())
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398 {
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399 for (int i = 0; i < ADDR_SPACE_COUNT; i++)
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400 if (!ADDR_SPACE_GENERIC_P (i)
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401 /* Only supply __FLASH<n> macro if the address space is reasonable
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402 for this target. The address space qualifier itself is still
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403 supported, but using it will throw an error. */
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404 && avr_addr_space_supported_p ((addr_space_t) i))
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405 {
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406 const char *name = avr_addrspace[i].name;
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407 char *Name = (char*) alloca (1 + strlen (name));
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408
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409 cpp_define (pfile, avr_toupper (Name, name));
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410 }
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411 }
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412
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413 /* Define builtin macros so that the user can easily query whether or
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414 not a specific builtin is available. */
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415
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416 #define DEF_BUILTIN(NAME, N_ARGS, TYPE, CODE, LIBNAME) \
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417 cpp_define (pfile, "__BUILTIN_AVR_" #NAME);
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418 #include "builtins.def"
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419 #undef DEF_BUILTIN
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420
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421 /* Builtin macros for the __int24 and __uint24 type. */
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422
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423 cpp_define_formatted (pfile, "__INT24_MAX__=8388607%s",
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424 INT_TYPE_SIZE == 8 ? "LL" : "L");
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425 cpp_define (pfile, "__INT24_MIN__=(-__INT24_MAX__-1)");
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426 cpp_define_formatted (pfile, "__UINT24_MAX__=16777215%s",
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427 INT_TYPE_SIZE == 8 ? "ULL" : "UL");
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428 }
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