1 | /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. |
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2 | Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC 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 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC 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 GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | #ifndef HAVE_MACHINE_MODES |
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22 | #define HAVE_MACHINE_MODES |
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23 | |
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24 | #include "gansidecl.h" |
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25 | |
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26 | /* Strictly speaking, this isn't the proper place to include these definitions, |
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27 | but this file is included by every GCC file. |
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28 | |
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29 | Some systems define these in, e.g., param.h. We undefine these names |
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30 | here to avoid the warnings. We prefer to use our definitions since we |
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31 | know they are correct. */ |
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32 | |
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33 | #undef MIN |
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34 | #undef MAX |
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35 | |
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36 | #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) |
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37 | #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) |
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38 | |
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39 | /* Find the largest host integer type and set its size and type. */ |
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40 | |
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41 | #ifndef HOST_BITS_PER_WIDE_INT |
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42 | |
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43 | #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT |
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44 | #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG |
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45 | #define HOST_WIDE_INT long |
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46 | #else |
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47 | #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT |
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48 | #define HOST_WIDE_INT int |
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49 | #endif |
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50 | |
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51 | #endif |
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52 | |
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53 | /* Provide a default way to print an address in hex via printf. */ |
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54 | |
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55 | #ifndef HOST_PTR_PRINTF |
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56 | #define HOST_PTR_PRINTF \ |
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57 | (sizeof (int) == sizeof (char *) ? "%x" \ |
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58 | : sizeof (long) == sizeof (char *) ? "%lx" : "%llx") |
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59 | #endif |
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60 | |
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61 | /* Provide defaults for the way to print a HOST_WIDE_INT |
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62 | in various manners. */ |
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63 | |
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64 | #ifndef HOST_WIDE_INT_PRINT_DEC |
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65 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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66 | #define HOST_WIDE_INT_PRINT_DEC "%d" |
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67 | #else |
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68 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
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69 | #define HOST_WIDE_INT_PRINT_DEC "%ld" |
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70 | #else |
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71 | #define HOST_WIDE_INT_PRINT_DEC "%lld" |
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72 | #endif |
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73 | #endif |
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74 | #endif |
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75 | |
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76 | #ifndef HOST_WIDE_INT_PRINT_UNSIGNED |
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77 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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78 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%u" |
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79 | #else |
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80 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
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81 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%lu" |
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82 | #else |
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83 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%llu" |
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84 | #endif |
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85 | #endif |
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86 | #endif |
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87 | |
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88 | #ifndef HOST_WIDE_INT_PRINT_HEX |
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89 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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90 | #define HOST_WIDE_INT_PRINT_HEX "0x%x" |
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91 | #else |
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92 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
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93 | #define HOST_WIDE_INT_PRINT_HEX "0x%lx" |
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94 | #else |
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95 | #define HOST_WIDE_INT_PRINT_HEX "0x%llx" |
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96 | #endif |
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97 | #endif |
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98 | #endif |
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99 | |
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100 | #ifndef HOST_WIDE_INT_PRINT_DOUBLE_HEX |
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101 | #if HOST_BITS_PER_WIDE_INT == 64 |
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102 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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103 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%016x" |
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104 | #else |
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105 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
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106 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx" |
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107 | #else |
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108 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx" |
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109 | #endif |
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110 | #endif |
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111 | #else |
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112 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT |
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113 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%08x" |
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114 | #else |
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115 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG |
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116 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx" |
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117 | #else |
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118 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%08llx" |
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119 | #endif |
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120 | #endif |
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121 | #endif |
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122 | #endif |
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123 | |
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124 | /* Make an enum class that gives all the machine modes. */ |
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125 | |
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126 | #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM, |
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127 | |
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128 | enum machine_mode { |
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129 | #include "machmode.def" |
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130 | |
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131 | #ifdef EXTRA_CC_MODES |
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132 | EXTRA_CC_MODES, |
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133 | #endif |
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134 | MAX_MACHINE_MODE }; |
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135 | |
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136 | #undef DEF_MACHMODE |
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137 | |
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138 | #ifndef NUM_MACHINE_MODES |
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139 | #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE |
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140 | #endif |
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141 | |
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142 | /* Get the name of mode MODE as a string. */ |
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143 | |
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144 | extern char *mode_name[]; |
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145 | #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)]) |
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146 | |
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147 | enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, |
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148 | MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS}; |
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149 | |
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150 | /* Get the general kind of object that mode MODE represents |
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151 | (integer, floating, complex, etc.) */ |
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152 | |
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153 | extern enum mode_class mode_class[]; |
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154 | #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)]) |
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155 | |
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156 | /* Nonzero if MODE is an integral mode. */ |
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157 | #define INTEGRAL_MODE_P(MODE) \ |
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158 | (GET_MODE_CLASS (MODE) == MODE_INT \ |
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159 | || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ |
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160 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) |
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161 | |
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162 | /* Nonzero if MODE is a floating-point mode. */ |
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163 | #define FLOAT_MODE_P(MODE) \ |
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164 | (GET_MODE_CLASS (MODE) == MODE_FLOAT \ |
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165 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) |
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166 | |
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167 | /* Get the size in bytes of an object of mode MODE. */ |
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168 | |
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169 | extern int mode_size[]; |
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170 | #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)]) |
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171 | |
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172 | /* Get the size in bytes of the basic parts of an object of mode MODE. */ |
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173 | |
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174 | extern int mode_unit_size[]; |
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175 | #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)]) |
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176 | |
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177 | /* Get the number of units in the object. */ |
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178 | |
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179 | #define GET_MODE_NUNITS(MODE) \ |
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180 | ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \ |
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181 | : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))) |
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182 | |
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183 | /* Get the size in bits of an object of mode MODE. */ |
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184 | |
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185 | #define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)]) |
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186 | |
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187 | /* Get a bitmask containing 1 for all bits in a word |
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188 | that fit within mode MODE. */ |
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189 | |
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190 | #define GET_MODE_MASK(MODE) \ |
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191 | ((GET_MODE_BITSIZE (MODE) >= HOST_BITS_PER_WIDE_INT) \ |
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192 | ?(HOST_WIDE_INT) ~0 : (((HOST_WIDE_INT) 1 << GET_MODE_BITSIZE (MODE)) - 1)) |
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193 | |
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194 | /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ |
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195 | |
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196 | extern enum machine_mode mode_wider_mode[]; |
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197 | #define GET_MODE_WIDER_MODE(MODE) (mode_wider_mode[(int) (MODE)]) |
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198 | |
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199 | /* Return the mode for data of a given size SIZE and mode class CLASS. |
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200 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. |
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201 | The value is BLKmode if no other mode is found. */ |
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202 | |
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203 | extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int)); |
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204 | |
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205 | /* Find the best mode to use to access a bit field. */ |
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206 | |
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207 | extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int)); |
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208 | |
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209 | /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ |
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210 | |
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211 | #define GET_MODE_ALIGNMENT(MODE) \ |
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212 | MIN (BIGGEST_ALIGNMENT, \ |
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213 | MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))) |
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214 | |
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215 | /* For each class, get the narrowest mode in that class. */ |
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216 | |
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217 | extern enum machine_mode class_narrowest_mode[]; |
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218 | #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)] |
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219 | |
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220 | /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD |
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221 | and the mode whose class is Pmode and whose size is POINTER_SIZE. */ |
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222 | |
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223 | extern enum machine_mode byte_mode; |
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224 | extern enum machine_mode word_mode; |
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225 | extern enum machine_mode ptr_mode; |
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226 | |
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227 | #endif /* not HAVE_MACHINE_MODES */ |
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