gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2020 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 #include "gdbarch.h"
  29
  30 /* The name of the symbol to use to get the name of the main subprogram.  */
  31 static const char D_MAIN[] = "D main";
  32
  33 /* Function returning the special symbol name used by D for the main
  34    procedure in the main program if it is found in minimal symbol list.
  35    This function tries to find minimal symbols so that it finds them even
  36    if the program was compiled without debugging information.  */
  37
  38 const char *
  39 d_main_name (void)
  40 {
  41   struct bound_minimal_symbol msym;
  42
  43   msym = lookup_minimal_symbol (D_MAIN, NULL, NULL);
  44   if (msym.minsym != NULL)
  45     return D_MAIN;
  46
  47   /* No known entry procedure found, the main program is probably not D.  */
  48   return NULL;
  49 }
  50
  51 /* Implements the la_demangle language_defn routine for language D.  */
  52
  53 char *
  54 d_demangle (const char *symbol, int options)
  55 {
  56   return gdb_demangle (symbol, options | DMGL_DLANG);
  57 }
  58
  59 /* Table mapping opcodes into strings for printing operators
  60    and precedences of the operators.  */
  61 static const struct op_print d_op_print_tab[] =
  62 {
  63   {",", BINOP_COMMA, PREC_COMMA, 0},
  64   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  65   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  66   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  67   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  68   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  69   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  70   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  71   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  72   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  73   {">=", BINOP_GEQ, PREC_ORDER, 0},
  74   {">", BINOP_GTR, PREC_ORDER, 0},
  75   {"<", BINOP_LESS, PREC_ORDER, 0},
  76   {">>", BINOP_RSH, PREC_SHIFT, 0},
  77   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  78   {"+", BINOP_ADD, PREC_ADD, 0},
  79   {"-", BINOP_SUB, PREC_ADD, 0},
  80   {"~", BINOP_CONCAT, PREC_ADD, 0},
  81   {"*", BINOP_MUL, PREC_MUL, 0},
  82   {"/", BINOP_DIV, PREC_MUL, 0},
  83   {"%", BINOP_REM, PREC_MUL, 0},
  84   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  85   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  86   {"-", UNOP_NEG, PREC_PREFIX, 0},
  87   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  88   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  89   {"*", UNOP_IND, PREC_PREFIX, 0},
  90   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  91   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
  92   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
  93   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
  94   {NULL, OP_NULL, PREC_PREFIX, 0}
  95 };
  96
  97 /* Mapping of all D basic data types into the language vector.  */
  98
  99 enum d_primitive_types {
 100   d_primitive_type_void,
 101   d_primitive_type_bool,
 102   d_primitive_type_byte,
 103   d_primitive_type_ubyte,
 104   d_primitive_type_short,
 105   d_primitive_type_ushort,
 106   d_primitive_type_int,
 107   d_primitive_type_uint,
 108   d_primitive_type_long,
 109   d_primitive_type_ulong,
 110   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 111   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 112   d_primitive_type_float,
 113   d_primitive_type_double,
 114   d_primitive_type_real,
 115   d_primitive_type_ifloat,  /* Imaginary float types.  */
 116   d_primitive_type_idouble,
 117   d_primitive_type_ireal,
 118   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 119   d_primitive_type_cdouble,
 120   d_primitive_type_creal,
 121   d_primitive_type_char,    /* Unsigned character types.  */
 122   d_primitive_type_wchar,
 123   d_primitive_type_dchar,
 124   nr_d_primitive_types
 125 };
 126
 127 /* Constant data that describes the D language.  */
 128
 129 extern const struct language_data d_language_data =
 130 {
 131   array_row_major,
 132   macro_expansion_no,
 133   &exp_descriptor_c,
 134   d_op_print_tab,               /* Expression operators for printing.  */
 135   &default_varobj_ops,
 136 };
 137
 138 /* Class representing the D language.  */
 139
 140 class d_language : public language_defn
 141 {
 142 public:
 143   d_language ()
 144     : language_defn (language_d, d_language_data)
 145   { /* Nothing.  */ }
 146
 147   /* See language.h.  */
 148
 149   const char *name () const override
 150   { return "d"; }
 151
 152   /* See language.h.  */
 153
 154   const char *natural_name () const override
 155   { return "D"; }
 156
 157   /* See language.h.  */
 158
 159   const std::vector<const char *> &filename_extensions () const override
 160   {
 161     static const std::vector<const char *> extensions = { ".d" };
 162     return extensions;
 163   }
 164
 165   /* See language.h.  */
 166   void language_arch_info (struct gdbarch *gdbarch,
 167                            struct language_arch_info *lai) const override
 168   {
 169     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 170
 171     lai->string_char_type = builtin->builtin_char;
 172     lai->primitive_type_vector
 173       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 174                                 struct type *);
 175
 176     lai->primitive_type_vector [d_primitive_type_void]
 177       = builtin->builtin_void;
 178     lai->primitive_type_vector [d_primitive_type_bool]
 179       = builtin->builtin_bool;
 180     lai->primitive_type_vector [d_primitive_type_byte]
 181       = builtin->builtin_byte;
 182     lai->primitive_type_vector [d_primitive_type_ubyte]
 183       = builtin->builtin_ubyte;
 184     lai->primitive_type_vector [d_primitive_type_short]
 185       = builtin->builtin_short;
 186     lai->primitive_type_vector [d_primitive_type_ushort]
 187       = builtin->builtin_ushort;
 188     lai->primitive_type_vector [d_primitive_type_int]
 189       = builtin->builtin_int;
 190     lai->primitive_type_vector [d_primitive_type_uint]
 191       = builtin->builtin_uint;
 192     lai->primitive_type_vector [d_primitive_type_long]
 193       = builtin->builtin_long;
 194     lai->primitive_type_vector [d_primitive_type_ulong]
 195       = builtin->builtin_ulong;
 196     lai->primitive_type_vector [d_primitive_type_cent]
 197       = builtin->builtin_cent;
 198     lai->primitive_type_vector [d_primitive_type_ucent]
 199       = builtin->builtin_ucent;
 200     lai->primitive_type_vector [d_primitive_type_float]
 201       = builtin->builtin_float;
 202     lai->primitive_type_vector [d_primitive_type_double]
 203       = builtin->builtin_double;
 204     lai->primitive_type_vector [d_primitive_type_real]
 205       = builtin->builtin_real;
 206     lai->primitive_type_vector [d_primitive_type_ifloat]
 207       = builtin->builtin_ifloat;
 208     lai->primitive_type_vector [d_primitive_type_idouble]
 209       = builtin->builtin_idouble;
 210     lai->primitive_type_vector [d_primitive_type_ireal]
 211       = builtin->builtin_ireal;
 212     lai->primitive_type_vector [d_primitive_type_cfloat]
 213       = builtin->builtin_cfloat;
 214     lai->primitive_type_vector [d_primitive_type_cdouble]
 215       = builtin->builtin_cdouble;
 216     lai->primitive_type_vector [d_primitive_type_creal]
 217       = builtin->builtin_creal;
 218     lai->primitive_type_vector [d_primitive_type_char]
 219       = builtin->builtin_char;
 220     lai->primitive_type_vector [d_primitive_type_wchar]
 221       = builtin->builtin_wchar;
 222     lai->primitive_type_vector [d_primitive_type_dchar]
 223       = builtin->builtin_dchar;
 224
 225     lai->bool_type_symbol = "bool";
 226     lai->bool_type_default = builtin->builtin_bool;
 227   }
 228
 229   /* See language.h.  */
 230   bool sniff_from_mangled_name (const char *mangled,
 231                                 char **demangled) const override
 232   {
 233     *demangled = d_demangle (mangled, 0);
 234     return *demangled != NULL;
 235   }
 236
 237   /* See language.h.  */
 238
 239   char *demangle (const char *mangled, int options) const override
 240   {
 241     return d_demangle (mangled, options);
 242   }
 243
 244   /* See language.h.  */
 245
 246   void print_type (struct type *type, const char *varstring,
 247                    struct ui_file *stream, int show, int level,
 248                    const struct type_print_options *flags) const override
 249   {
 250     c_print_type (type, varstring, stream, show, level, flags);
 251   }
 252
 253   /* See language.h.  */
 254
 255   void value_print_inner
 256         (struct value *val, struct ui_file *stream, int recurse,
 257          const struct value_print_options *options) const override
 258   {
 259     return d_value_print_inner (val, stream, recurse, options);
 260   }
 261
 262   /* See language.h.  */
 263
 264   struct block_symbol lookup_symbol_nonlocal
 265         (const char *name, const struct block *block,
 266          const domain_enum domain) const override
 267   {
 268     return d_lookup_symbol_nonlocal (this, name, block, domain);
 269   }
 270
 271   /* See language.h.  */
 272
 273   int parser (struct parser_state *ps) const override
 274   {
 275     return d_parse (ps);
 276   }
 277
 278   /* See language.h.  */
 279
 280   const char *name_of_this () const override
 281   { return "this"; }
 282 };
 283
 284 /* Single instance of the D language class.  */
 285
 286 static d_language d_language_defn;
 287
 288 /* Build all D language types for the specified architecture.  */
 289
 290 static void *
 291 build_d_types (struct gdbarch *gdbarch)
 292 {
 293   struct builtin_d_type *builtin_d_type
 294     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 295
 296   /* Basic types.  */
 297   builtin_d_type->builtin_void
 298     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 299   builtin_d_type->builtin_bool
 300     = arch_boolean_type (gdbarch, 8, 1, "bool");
 301   builtin_d_type->builtin_byte
 302     = arch_integer_type (gdbarch, 8, 0, "byte");
 303   builtin_d_type->builtin_ubyte
 304     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 305   builtin_d_type->builtin_short
 306     = arch_integer_type (gdbarch, 16, 0, "short");
 307   builtin_d_type->builtin_ushort
 308     = arch_integer_type (gdbarch, 16, 1, "ushort");
 309   builtin_d_type->builtin_int
 310     = arch_integer_type (gdbarch, 32, 0, "int");
 311   builtin_d_type->builtin_uint
 312     = arch_integer_type (gdbarch, 32, 1, "uint");
 313   builtin_d_type->builtin_long
 314     = arch_integer_type (gdbarch, 64, 0, "long");
 315   builtin_d_type->builtin_ulong
 316     = arch_integer_type (gdbarch, 64, 1, "ulong");
 317   builtin_d_type->builtin_cent
 318     = arch_integer_type (gdbarch, 128, 0, "cent");
 319   builtin_d_type->builtin_ucent
 320     = arch_integer_type (gdbarch, 128, 1, "ucent");
 321   builtin_d_type->builtin_float
 322     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 323                        "float", gdbarch_float_format (gdbarch));
 324   builtin_d_type->builtin_double
 325     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 326                        "double", gdbarch_double_format (gdbarch));
 327   builtin_d_type->builtin_real
 328     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 329                        "real", gdbarch_long_double_format (gdbarch));
 330
 331   builtin_d_type->builtin_byte->set_instance_flags
 332     (builtin_d_type->builtin_byte->instance_flags ()
 333      | TYPE_INSTANCE_FLAG_NOTTEXT);
 334
 335   builtin_d_type->builtin_ubyte->set_instance_flags
 336     (builtin_d_type->builtin_ubyte->instance_flags ()
 337      | TYPE_INSTANCE_FLAG_NOTTEXT);
 338
 339   /* Imaginary and complex types.  */
 340   builtin_d_type->builtin_ifloat
 341     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 342                        "ifloat", gdbarch_float_format (gdbarch));
 343   builtin_d_type->builtin_idouble
 344     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 345                        "idouble", gdbarch_double_format (gdbarch));
 346   builtin_d_type->builtin_ireal
 347     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 348                        "ireal", gdbarch_long_double_format (gdbarch));
 349   builtin_d_type->builtin_cfloat
 350     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 351   builtin_d_type->builtin_cdouble
 352     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 353   builtin_d_type->builtin_creal
 354     = init_complex_type ("creal", builtin_d_type->builtin_real);
 355
 356   /* Character types.  */
 357   builtin_d_type->builtin_char
 358     = arch_character_type (gdbarch, 8, 1, "char");
 359   builtin_d_type->builtin_wchar
 360     = arch_character_type (gdbarch, 16, 1, "wchar");
 361   builtin_d_type->builtin_dchar
 362     = arch_character_type (gdbarch, 32, 1, "dchar");
 363
 364   return builtin_d_type;
 365 }
 366
 367 static struct gdbarch_data *d_type_data;
 368
 369 /* Return the D type table for the specified architecture.  */
 370
 371 const struct builtin_d_type *
 372 builtin_d_type (struct gdbarch *gdbarch)
 373 {
 374   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 375 }
 376
 377 void _initialize_d_language ();
 378 void
 379 _initialize_d_language ()
 380 {
 381   d_type_data = gdbarch_data_register_post_init (build_d_types);
 382 }