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1 /* Header file to the Fortran front-end and runtime library
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2 Copyright (C) 2007-2018 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 under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 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
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21 /* Flags to specify which standard/extension contains a feature.
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22 Note that no features were obsoleted nor deleted in F2003.
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23 Please remember to keep those definitions in sync with
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24 gfortran.texi. */
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25 #define GFC_STD_F2018_DEL (1<<11) /* Deleted in F2018. */
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26 #define GFC_STD_F2018_OBS (1<<10) /* Obsolescent in F2018. */
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27 #define GFC_STD_F2018 (1<<9) /* New in F2018. */
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28 #define GFC_STD_F2008_OBS (1<<8) /* Obsolescent in F2008. */
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29 #define GFC_STD_F2008 (1<<7) /* New in F2008. */
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30 #define GFC_STD_LEGACY (1<<6) /* Backward compatibility. */
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31 #define GFC_STD_GNU (1<<5) /* GNU Fortran extension. */
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32 #define GFC_STD_F2003 (1<<4) /* New in F2003. */
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33 #define GFC_STD_F95 (1<<3) /* New in F95. */
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34 #define GFC_STD_F95_DEL (1<<2) /* Deleted in F95. */
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35 #define GFC_STD_F95_OBS (1<<1) /* Obsolescent in F95. */
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36 #define GFC_STD_F77 (1<<0) /* Included in F77, but not deleted or
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37 obsolescent in later standards. */
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38
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39 /* Combinations of the above flags that specify which classes of features
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40 * are allowed with a certain -std option. */
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41 #define GFC_STD_OPT_F95 (GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F95_OBS \
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42 | GFC_STD_F2008_OBS | GFC_STD_F2018_OBS \
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43 | GFC_STD_F2018_DEL)
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44 #define GFC_STD_OPT_F03 (GFC_STD_OPT_F95 | GFC_STD_F2003)
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45 #define GFC_STD_OPT_F08 (GFC_STD_OPT_F03 | GFC_STD_F2008)
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46 #define GFC_STD_OPT_F18 ((GFC_STD_OPT_F08 | GFC_STD_F2018) \
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47 & (~GFC_STD_F2018_DEL))
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48
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49 /* Bitmasks for the various FPE that can be enabled. These need to be straight integers
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50 e.g., 8 instead of (1<<3), because they will be included in Fortran source. */
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51 #define GFC_FPE_INVALID 1
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52 #define GFC_FPE_DENORMAL 2
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53 #define GFC_FPE_ZERO 4
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54 #define GFC_FPE_OVERFLOW 8
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55 #define GFC_FPE_UNDERFLOW 16
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56 #define GFC_FPE_INEXACT 32
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57
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58 /* Defines for floating-point rounding modes. */
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59 #define GFC_FPE_DOWNWARD 1
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60 #define GFC_FPE_TONEAREST 2
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61 #define GFC_FPE_TOWARDZERO 3
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62 #define GFC_FPE_UPWARD 4
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63
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64 /* Size of the buffer required to store FPU state for any target.
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65 In particular, this has to be larger than fenv_t on all glibc targets.
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66 Currently, the winner is x86_64 with 32 bytes. */
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67 #define GFC_FPE_STATE_BUFFER_SIZE 32
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68
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69 /* Bitmasks for the various runtime checks that can be enabled. */
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70 #define GFC_RTCHECK_BOUNDS (1<<0)
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71 #define GFC_RTCHECK_ARRAY_TEMPS (1<<1)
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72 #define GFC_RTCHECK_RECURSION (1<<2)
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73 #define GFC_RTCHECK_DO (1<<3)
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74 #define GFC_RTCHECK_POINTER (1<<4)
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75 #define GFC_RTCHECK_MEM (1<<5)
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76 #define GFC_RTCHECK_ALL (GFC_RTCHECK_BOUNDS | GFC_RTCHECK_ARRAY_TEMPS \
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77 | GFC_RTCHECK_RECURSION | GFC_RTCHECK_DO \
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78 | GFC_RTCHECK_POINTER | GFC_RTCHECK_MEM)
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79
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80 /* Special unit numbers used to convey certain conditions. Numbers -4
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81 thru -9 available. NEWUNIT values start at -10. */
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82 #define GFC_INTERNAL_UNIT -1 /* KIND=1 Internal Unit. */
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83 #define GFC_INTERNAL_UNIT4 -2 /* KIND=4 Internal Unit. */
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84 #define GFC_INVALID_UNIT -3
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85
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86 /* Possible values for the CONVERT I/O specifier. */
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87 /* Keep in sync with GFC_FLAG_CONVERT_* in gcc/flags.h. */
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88 typedef enum
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89 {
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90 GFC_CONVERT_NONE = -1,
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91 GFC_CONVERT_NATIVE = 0,
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92 GFC_CONVERT_SWAP,
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93 GFC_CONVERT_BIG,
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94 GFC_CONVERT_LITTLE
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95 }
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96 unit_convert;
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97
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98
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99 /* Runtime errors. */
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100 typedef enum
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101 {
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102 LIBERROR_FIRST = -3, /* Marker for the first error. */
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103 LIBERROR_EOR = -2, /* End of record, must be negative. */
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104 LIBERROR_END = -1, /* End of file, must be negative. */
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105 LIBERROR_OK = 0, /* Indicates success, must be zero. */
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106 LIBERROR_OS = 5000, /* OS error, more info in errno. */
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107 LIBERROR_OPTION_CONFLICT,
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108 LIBERROR_BAD_OPTION,
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109 LIBERROR_MISSING_OPTION,
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110 LIBERROR_ALREADY_OPEN,
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111 LIBERROR_BAD_UNIT,
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112 LIBERROR_FORMAT,
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113 LIBERROR_BAD_ACTION,
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114 LIBERROR_ENDFILE,
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115 LIBERROR_BAD_US,
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116 LIBERROR_READ_VALUE,
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117 LIBERROR_READ_OVERFLOW,
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118 LIBERROR_INTERNAL,
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119 LIBERROR_INTERNAL_UNIT,
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120 LIBERROR_ALLOCATION,
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121 LIBERROR_DIRECT_EOR,
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122 LIBERROR_SHORT_RECORD,
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123 LIBERROR_CORRUPT_FILE,
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124 LIBERROR_INQUIRE_INTERNAL_UNIT, /* Must be different from STAT_STOPPED_IMAGE. */
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125 LIBERROR_LAST /* Not a real error, the last error # + 1. */
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126 }
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127 libgfortran_error_codes;
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128
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129 /* Must kept in sync with libgfortran/caf/libcaf.h. */
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130 typedef enum
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131 {
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132 GFC_STAT_UNLOCKED = 0,
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133 GFC_STAT_LOCKED,
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134 GFC_STAT_LOCKED_OTHER_IMAGE,
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135 GFC_STAT_STOPPED_IMAGE = 6000, /* See LIBERROR_INQUIRE_INTERNAL_UNIT above. */
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136 GFC_STAT_FAILED_IMAGE = 6001
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137 }
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138 libgfortran_stat_codes;
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139
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140 typedef enum
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141 {
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142 GFC_CAF_ATOMIC_ADD = 1,
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143 GFC_CAF_ATOMIC_AND,
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144 GFC_CAF_ATOMIC_OR,
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145 GFC_CAF_ATOMIC_XOR
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146 } libcaf_atomic_codes;
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147
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148
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149 /* For CO_REDUCE. */
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150 #define GFC_CAF_BYREF (1<<0)
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151 #define GFC_CAF_HIDDENLEN (1<<1)
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152 #define GFC_CAF_ARG_VALUE (1<<2)
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153 #define GFC_CAF_ARG_DESC (1<<3)
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154
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155
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156 /* Default unit number for preconnected standard input and output. */
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157 #define GFC_STDIN_UNIT_NUMBER 5
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158 #define GFC_STDOUT_UNIT_NUMBER 6
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159 #define GFC_STDERR_UNIT_NUMBER 0
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160
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161 /* F2003 onward. For std < F2003, error caught in array.c(gfc_match_array_ref). */
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162 #define GFC_MAX_DIMENSIONS 15
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163
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164 #define GFC_DTYPE_RANK_MASK 0x0F
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165 #define GFC_DTYPE_TYPE_SHIFT 4
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166 #define GFC_DTYPE_TYPE_MASK 0x70
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167 #define GFC_DTYPE_SIZE_SHIFT 7
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168
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169 /* Basic types. BT_VOID is used by ISO C Binding so funcs like c_f_pointer
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170 can take any arg with the pointer attribute as a param. These are also
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171 used in the run-time library for IO. */
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172 typedef enum
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173 { BT_UNKNOWN = 0, BT_INTEGER, BT_LOGICAL, BT_REAL, BT_COMPLEX,
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174 BT_DERIVED, BT_CHARACTER, BT_CLASS, BT_PROCEDURE, BT_HOLLERITH, BT_VOID,
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175 BT_ASSUMED, BT_UNION
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176 }
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177 bt;
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