gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2017 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "symtab.h"
  22 #include "language.h"
  23 #include "varobj.h"
  24 #include "d-lang.h"
  25 #include "c-lang.h"
  26 #include "demangle.h"
  27 #include "cp-support.h"
  28
  29 /* The name of the symbol to use to get the name of the main subprogram.  */
  30 static const char D_MAIN[] = "D main";
  31
  32 /* Function returning the special symbol name used by D for the main
  33    procedure in the main program if it is found in minimal symbol list.
  34    This function tries to find minimal symbols so that it finds them even
  35    if the program was compiled without debugging information.  */
  36
  37 const char *
  38 d_main_name (void)
  39 {
  40   struct bound_minimal_symbol msym;
  41
  42   msym = lookup_minimal_symbol (D_MAIN, NULL, NULL);
  43   if (msym.minsym != NULL)
  44     return D_MAIN;
  45
  46   /* No known entry procedure found, the main program is probably not D.  */
  47   return NULL;
  48 }
  49
  50 /* Implements the la_demangle language_defn routine for language D.  */
  51
  52 char *
  53 d_demangle (const char *symbol, int options)
  54 {
  55   return gdb_demangle (symbol, options | DMGL_DLANG);
  56 }
  57
  58 /* la_sniff_from_mangled_name implementation for D.  */
  59
  60 static int
  61 d_sniff_from_mangled_name (const char *mangled, char **demangled)
  62 {
  63   *demangled = d_demangle (mangled, 0);
  64   return *demangled != NULL;
  65 }
  66
  67 /* Table mapping opcodes into strings for printing operators
  68    and precedences of the operators.  */
  69 static const struct op_print d_op_print_tab[] =
  70 {
  71   {",", BINOP_COMMA, PREC_COMMA, 0},
  72   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  73   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  74   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  75   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  76   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  77   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  78   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  79   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  80   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  81   {">=", BINOP_GEQ, PREC_ORDER, 0},
  82   {">", BINOP_GTR, PREC_ORDER, 0},
  83   {"<", BINOP_LESS, PREC_ORDER, 0},
  84   {">>", BINOP_RSH, PREC_SHIFT, 0},
  85   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  86   {"+", BINOP_ADD, PREC_ADD, 0},
  87   {"-", BINOP_SUB, PREC_ADD, 0},
  88   {"~", BINOP_CONCAT, PREC_ADD, 0},
  89   {"*", BINOP_MUL, PREC_MUL, 0},
  90   {"/", BINOP_DIV, PREC_MUL, 0},
  91   {"%", BINOP_REM, PREC_MUL, 0},
  92   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  93   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  94   {"-", UNOP_NEG, PREC_PREFIX, 0},
  95   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  96   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  97   {"*", UNOP_IND, PREC_PREFIX, 0},
  98   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  99   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 100   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 101   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 102   {NULL, OP_NULL, PREC_PREFIX, 0}
 103 };
 104
 105 /* Mapping of all D basic data types into the language vector.  */
 106
 107 enum d_primitive_types {
 108   d_primitive_type_void,
 109   d_primitive_type_bool,
 110   d_primitive_type_byte,
 111   d_primitive_type_ubyte,
 112   d_primitive_type_short,
 113   d_primitive_type_ushort,
 114   d_primitive_type_int,
 115   d_primitive_type_uint,
 116   d_primitive_type_long,
 117   d_primitive_type_ulong,
 118   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 119   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 120   d_primitive_type_float,
 121   d_primitive_type_double,
 122   d_primitive_type_real,
 123   d_primitive_type_ifloat,  /* Imaginary float types.  */
 124   d_primitive_type_idouble,
 125   d_primitive_type_ireal,
 126   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 127   d_primitive_type_cdouble,
 128   d_primitive_type_creal,
 129   d_primitive_type_char,    /* Unsigned character types.  */
 130   d_primitive_type_wchar,
 131   d_primitive_type_dchar,
 132   nr_d_primitive_types
 133 };
 134
 135 /* Implements the la_language_arch_info language_defn routine
 136    for language D.  */
 137
 138 static void
 139 d_language_arch_info (struct gdbarch *gdbarch,
 140                       struct language_arch_info *lai)
 141 {
 142   const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 143
 144   lai->string_char_type = builtin->builtin_char;
 145   lai->primitive_type_vector
 146     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 147                               struct type *);
 148
 149   lai->primitive_type_vector [d_primitive_type_void]
 150     = builtin->builtin_void;
 151   lai->primitive_type_vector [d_primitive_type_bool]
 152     = builtin->builtin_bool;
 153   lai->primitive_type_vector [d_primitive_type_byte]
 154     = builtin->builtin_byte;
 155   lai->primitive_type_vector [d_primitive_type_ubyte]
 156     = builtin->builtin_ubyte;
 157   lai->primitive_type_vector [d_primitive_type_short]
 158     = builtin->builtin_short;
 159   lai->primitive_type_vector [d_primitive_type_ushort]
 160     = builtin->builtin_ushort;
 161   lai->primitive_type_vector [d_primitive_type_int]
 162     = builtin->builtin_int;
 163   lai->primitive_type_vector [d_primitive_type_uint]
 164     = builtin->builtin_uint;
 165   lai->primitive_type_vector [d_primitive_type_long]
 166     = builtin->builtin_long;
 167   lai->primitive_type_vector [d_primitive_type_ulong]
 168     = builtin->builtin_ulong;
 169   lai->primitive_type_vector [d_primitive_type_cent]
 170     = builtin->builtin_cent;
 171   lai->primitive_type_vector [d_primitive_type_ucent]
 172     = builtin->builtin_ucent;
 173   lai->primitive_type_vector [d_primitive_type_float]
 174     = builtin->builtin_float;
 175   lai->primitive_type_vector [d_primitive_type_double]
 176     = builtin->builtin_double;
 177   lai->primitive_type_vector [d_primitive_type_real]
 178     = builtin->builtin_real;
 179   lai->primitive_type_vector [d_primitive_type_ifloat]
 180     = builtin->builtin_ifloat;
 181   lai->primitive_type_vector [d_primitive_type_idouble]
 182     = builtin->builtin_idouble;
 183   lai->primitive_type_vector [d_primitive_type_ireal]
 184     = builtin->builtin_ireal;
 185   lai->primitive_type_vector [d_primitive_type_cfloat]
 186     = builtin->builtin_cfloat;
 187   lai->primitive_type_vector [d_primitive_type_cdouble]
 188     = builtin->builtin_cdouble;
 189   lai->primitive_type_vector [d_primitive_type_creal]
 190     = builtin->builtin_creal;
 191   lai->primitive_type_vector [d_primitive_type_char]
 192     = builtin->builtin_char;
 193   lai->primitive_type_vector [d_primitive_type_wchar]
 194     = builtin->builtin_wchar;
 195   lai->primitive_type_vector [d_primitive_type_dchar]
 196     = builtin->builtin_dchar;
 197
 198   lai->bool_type_symbol = "bool";
 199   lai->bool_type_default = builtin->builtin_bool;
 200 }
 201
 202 static const char *d_extensions[] =
 203 {
 204   ".d", NULL
 205 };
 206
 207 static const struct language_defn d_language_defn =
 208 {
 209   "d",
 210   "D",
 211   language_d,
 212   range_check_off,
 213   case_sensitive_on,
 214   array_row_major,
 215   macro_expansion_no,
 216   d_extensions,
 217   &exp_descriptor_c,
 218   d_parse,
 219   d_yyerror,
 220   null_post_parser,
 221   c_printchar,                  /* Print a character constant.  */
 222   c_printstr,                   /* Function to print string constant.  */
 223   c_emit_char,                  /* Print a single char.  */
 224   c_print_type,                 /* Print a type using appropriate syntax.  */
 225   c_print_typedef,              /* Print a typedef using appropriate
 226                                    syntax.  */
 227   d_val_print,                  /* Print a value using appropriate syntax.  */
 228   c_value_print,                /* Print a top-level value.  */
 229   default_read_var_value,       /* la_read_var_value */
 230   NULL,                         /* Language specific skip_trampoline.  */
 231   "this",
 232   d_lookup_symbol_nonlocal,
 233   basic_lookup_transparent_type,
 234   d_demangle,                   /* Language specific symbol demangler.  */
 235   d_sniff_from_mangled_name,
 236   NULL,                         /* Language specific
 237                                    class_name_from_physname.  */
 238   d_op_print_tab,               /* Expression operators for printing.  */
 239   1,                            /* C-style arrays.  */
 240   0,                            /* String lower bound.  */
 241   default_word_break_characters,
 242   default_collect_symbol_completion_matches,
 243   d_language_arch_info,
 244   default_print_array_index,
 245   default_pass_by_reference,
 246   c_get_string,
 247   c_watch_location_expression,
 248   NULL,                         /* la_get_symbol_name_cmp */
 249   iterate_over_symbols,
 250   &default_varobj_ops,
 251   NULL,
 252   NULL,
 253   LANG_MAGIC
 254 };
 255
 256 /* Build all D language types for the specified architecture.  */
 257
 258 static void *
 259 build_d_types (struct gdbarch *gdbarch)
 260 {
 261   struct builtin_d_type *builtin_d_type
 262     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 263
 264   /* Basic types.  */
 265   builtin_d_type->builtin_void
 266     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
 267   builtin_d_type->builtin_bool
 268     = arch_boolean_type (gdbarch, 8, 1, "bool");
 269   builtin_d_type->builtin_byte
 270     = arch_integer_type (gdbarch, 8, 0, "byte");
 271   builtin_d_type->builtin_ubyte
 272     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 273   builtin_d_type->builtin_short
 274     = arch_integer_type (gdbarch, 16, 0, "short");
 275   builtin_d_type->builtin_ushort
 276     = arch_integer_type (gdbarch, 16, 1, "ushort");
 277   builtin_d_type->builtin_int
 278     = arch_integer_type (gdbarch, 32, 0, "int");
 279   builtin_d_type->builtin_uint
 280     = arch_integer_type (gdbarch, 32, 1, "uint");
 281   builtin_d_type->builtin_long
 282     = arch_integer_type (gdbarch, 64, 0, "long");
 283   builtin_d_type->builtin_ulong
 284     = arch_integer_type (gdbarch, 64, 1, "ulong");
 285   builtin_d_type->builtin_cent
 286     = arch_integer_type (gdbarch, 128, 0, "cent");
 287   builtin_d_type->builtin_ucent
 288     = arch_integer_type (gdbarch, 128, 1, "ucent");
 289   builtin_d_type->builtin_float
 290     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 291                        "float", gdbarch_float_format (gdbarch));
 292   builtin_d_type->builtin_double
 293     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 294                        "double", gdbarch_double_format (gdbarch));
 295   builtin_d_type->builtin_real
 296     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 297                        "real", gdbarch_long_double_format (gdbarch));
 298
 299   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 300     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 301   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 302     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 303
 304   /* Imaginary and complex types.  */
 305   builtin_d_type->builtin_ifloat
 306     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 307                        "ifloat", gdbarch_float_format (gdbarch));
 308   builtin_d_type->builtin_idouble
 309     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 310                        "idouble", gdbarch_double_format (gdbarch));
 311   builtin_d_type->builtin_ireal
 312     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 313                        "ireal", gdbarch_long_double_format (gdbarch));
 314   builtin_d_type->builtin_cfloat
 315     = arch_complex_type (gdbarch, "cfloat",
 316                          builtin_d_type->builtin_float);
 317   builtin_d_type->builtin_cdouble
 318     = arch_complex_type (gdbarch, "cdouble",
 319                          builtin_d_type->builtin_double);
 320   builtin_d_type->builtin_creal
 321     = arch_complex_type (gdbarch, "creal",
 322                          builtin_d_type->builtin_real);
 323
 324   /* Character types.  */
 325   builtin_d_type->builtin_char
 326     = arch_character_type (gdbarch, 8, 1, "char");
 327   builtin_d_type->builtin_wchar
 328     = arch_character_type (gdbarch, 16, 1, "wchar");
 329   builtin_d_type->builtin_dchar
 330     = arch_character_type (gdbarch, 32, 1, "dchar");
 331
 332   return builtin_d_type;
 333 }
 334
 335 static struct gdbarch_data *d_type_data;
 336
 337 /* Return the D type table for the specified architecture.  */
 338
 339 const struct builtin_d_type *
 340 builtin_d_type (struct gdbarch *gdbarch)
 341 {
 342   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 343 }
 344
 345 /* Provide a prototype to silence -Wmissing-prototypes.  */
 346 extern initialize_file_ftype _initialize_d_language;
 347
 348 void
 349 _initialize_d_language (void)
 350 {
 351   d_type_data = gdbarch_data_register_post_init (build_d_types);
 352
 353   add_language (&d_language_defn);
 354 }