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   &exp_descriptor_c,
 132   d_op_print_tab,               /* Expression operators for printing.  */
 133 };
 134
 135 /* Class representing the D language.  */
 136
 137 class d_language : public language_defn
 138 {
 139 public:
 140   d_language ()
 141     : language_defn (language_d, d_language_data)
 142   { /* Nothing.  */ }
 143
 144   /* See language.h.  */
 145
 146   const char *name () const override
 147   { return "d"; }
 148
 149   /* See language.h.  */
 150
 151   const char *natural_name () const override
 152   { return "D"; }
 153
 154   /* See language.h.  */
 155
 156   const std::vector<const char *> &filename_extensions () const override
 157   {
 158     static const std::vector<const char *> extensions = { ".d" };
 159     return extensions;
 160   }
 161
 162   /* See language.h.  */
 163   void language_arch_info (struct gdbarch *gdbarch,
 164                            struct language_arch_info *lai) const override
 165   {
 166     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 167
 168     lai->string_char_type = builtin->builtin_char;
 169     lai->primitive_type_vector
 170       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 171                                 struct type *);
 172
 173     lai->primitive_type_vector [d_primitive_type_void]
 174       = builtin->builtin_void;
 175     lai->primitive_type_vector [d_primitive_type_bool]
 176       = builtin->builtin_bool;
 177     lai->primitive_type_vector [d_primitive_type_byte]
 178       = builtin->builtin_byte;
 179     lai->primitive_type_vector [d_primitive_type_ubyte]
 180       = builtin->builtin_ubyte;
 181     lai->primitive_type_vector [d_primitive_type_short]
 182       = builtin->builtin_short;
 183     lai->primitive_type_vector [d_primitive_type_ushort]
 184       = builtin->builtin_ushort;
 185     lai->primitive_type_vector [d_primitive_type_int]
 186       = builtin->builtin_int;
 187     lai->primitive_type_vector [d_primitive_type_uint]
 188       = builtin->builtin_uint;
 189     lai->primitive_type_vector [d_primitive_type_long]
 190       = builtin->builtin_long;
 191     lai->primitive_type_vector [d_primitive_type_ulong]
 192       = builtin->builtin_ulong;
 193     lai->primitive_type_vector [d_primitive_type_cent]
 194       = builtin->builtin_cent;
 195     lai->primitive_type_vector [d_primitive_type_ucent]
 196       = builtin->builtin_ucent;
 197     lai->primitive_type_vector [d_primitive_type_float]
 198       = builtin->builtin_float;
 199     lai->primitive_type_vector [d_primitive_type_double]
 200       = builtin->builtin_double;
 201     lai->primitive_type_vector [d_primitive_type_real]
 202       = builtin->builtin_real;
 203     lai->primitive_type_vector [d_primitive_type_ifloat]
 204       = builtin->builtin_ifloat;
 205     lai->primitive_type_vector [d_primitive_type_idouble]
 206       = builtin->builtin_idouble;
 207     lai->primitive_type_vector [d_primitive_type_ireal]
 208       = builtin->builtin_ireal;
 209     lai->primitive_type_vector [d_primitive_type_cfloat]
 210       = builtin->builtin_cfloat;
 211     lai->primitive_type_vector [d_primitive_type_cdouble]
 212       = builtin->builtin_cdouble;
 213     lai->primitive_type_vector [d_primitive_type_creal]
 214       = builtin->builtin_creal;
 215     lai->primitive_type_vector [d_primitive_type_char]
 216       = builtin->builtin_char;
 217     lai->primitive_type_vector [d_primitive_type_wchar]
 218       = builtin->builtin_wchar;
 219     lai->primitive_type_vector [d_primitive_type_dchar]
 220       = builtin->builtin_dchar;
 221
 222     lai->bool_type_symbol = "bool";
 223     lai->bool_type_default = builtin->builtin_bool;
 224   }
 225
 226   /* See language.h.  */
 227   bool sniff_from_mangled_name (const char *mangled,
 228                                 char **demangled) const override
 229   {
 230     *demangled = d_demangle (mangled, 0);
 231     return *demangled != NULL;
 232   }
 233
 234   /* See language.h.  */
 235
 236   char *demangle (const char *mangled, int options) const override
 237   {
 238     return d_demangle (mangled, options);
 239   }
 240
 241   /* See language.h.  */
 242
 243   void print_type (struct type *type, const char *varstring,
 244                    struct ui_file *stream, int show, int level,
 245                    const struct type_print_options *flags) const override
 246   {
 247     c_print_type (type, varstring, stream, show, level, flags);
 248   }
 249
 250   /* See language.h.  */
 251
 252   void value_print_inner
 253         (struct value *val, struct ui_file *stream, int recurse,
 254          const struct value_print_options *options) const override
 255   {
 256     return d_value_print_inner (val, stream, recurse, options);
 257   }
 258
 259   /* See language.h.  */
 260
 261   struct block_symbol lookup_symbol_nonlocal
 262         (const char *name, const struct block *block,
 263          const domain_enum domain) const override
 264   {
 265     return d_lookup_symbol_nonlocal (this, name, block, domain);
 266   }
 267
 268   /* See language.h.  */
 269
 270   int parser (struct parser_state *ps) const override
 271   {
 272     return d_parse (ps);
 273   }
 274
 275   /* See language.h.  */
 276
 277   const char *name_of_this () const override
 278   { return "this"; }
 279 };
 280
 281 /* Single instance of the D language class.  */
 282
 283 static d_language d_language_defn;
 284
 285 /* Build all D language types for the specified architecture.  */
 286
 287 static void *
 288 build_d_types (struct gdbarch *gdbarch)
 289 {
 290   struct builtin_d_type *builtin_d_type
 291     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 292
 293   /* Basic types.  */
 294   builtin_d_type->builtin_void
 295     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 296   builtin_d_type->builtin_bool
 297     = arch_boolean_type (gdbarch, 8, 1, "bool");
 298   builtin_d_type->builtin_byte
 299     = arch_integer_type (gdbarch, 8, 0, "byte");
 300   builtin_d_type->builtin_ubyte
 301     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 302   builtin_d_type->builtin_short
 303     = arch_integer_type (gdbarch, 16, 0, "short");
 304   builtin_d_type->builtin_ushort
 305     = arch_integer_type (gdbarch, 16, 1, "ushort");
 306   builtin_d_type->builtin_int
 307     = arch_integer_type (gdbarch, 32, 0, "int");
 308   builtin_d_type->builtin_uint
 309     = arch_integer_type (gdbarch, 32, 1, "uint");
 310   builtin_d_type->builtin_long
 311     = arch_integer_type (gdbarch, 64, 0, "long");
 312   builtin_d_type->builtin_ulong
 313     = arch_integer_type (gdbarch, 64, 1, "ulong");
 314   builtin_d_type->builtin_cent
 315     = arch_integer_type (gdbarch, 128, 0, "cent");
 316   builtin_d_type->builtin_ucent
 317     = arch_integer_type (gdbarch, 128, 1, "ucent");
 318   builtin_d_type->builtin_float
 319     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 320                        "float", gdbarch_float_format (gdbarch));
 321   builtin_d_type->builtin_double
 322     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 323                        "double", gdbarch_double_format (gdbarch));
 324   builtin_d_type->builtin_real
 325     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 326                        "real", gdbarch_long_double_format (gdbarch));
 327
 328   builtin_d_type->builtin_byte->set_instance_flags
 329     (builtin_d_type->builtin_byte->instance_flags ()
 330      | TYPE_INSTANCE_FLAG_NOTTEXT);
 331
 332   builtin_d_type->builtin_ubyte->set_instance_flags
 333     (builtin_d_type->builtin_ubyte->instance_flags ()
 334      | TYPE_INSTANCE_FLAG_NOTTEXT);
 335
 336   /* Imaginary and complex types.  */
 337   builtin_d_type->builtin_ifloat
 338     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 339                        "ifloat", gdbarch_float_format (gdbarch));
 340   builtin_d_type->builtin_idouble
 341     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 342                        "idouble", gdbarch_double_format (gdbarch));
 343   builtin_d_type->builtin_ireal
 344     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 345                        "ireal", gdbarch_long_double_format (gdbarch));
 346   builtin_d_type->builtin_cfloat
 347     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 348   builtin_d_type->builtin_cdouble
 349     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 350   builtin_d_type->builtin_creal
 351     = init_complex_type ("creal", builtin_d_type->builtin_real);
 352
 353   /* Character types.  */
 354   builtin_d_type->builtin_char
 355     = arch_character_type (gdbarch, 8, 1, "char");
 356   builtin_d_type->builtin_wchar
 357     = arch_character_type (gdbarch, 16, 1, "wchar");
 358   builtin_d_type->builtin_dchar
 359     = arch_character_type (gdbarch, 32, 1, "dchar");
 360
 361   return builtin_d_type;
 362 }
 363
 364 static struct gdbarch_data *d_type_data;
 365
 366 /* Return the D type table for the specified architecture.  */
 367
 368 const struct builtin_d_type *
 369 builtin_d_type (struct gdbarch *gdbarch)
 370 {
 371   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 372 }
 373
 374 void _initialize_d_language ();
 375 void
 376 _initialize_d_language ()
 377 {
 378   d_type_data = gdbarch_data_register_post_init (build_d_types);
 379 }