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 /* Class representing the D language.  */
 128
 129 class d_language : public language_defn
 130 {
 131 public:
 132   d_language ()
 133     : language_defn (language_d)
 134   { /* Nothing.  */ }
 135
 136   /* See language.h.  */
 137
 138   const char *name () const override
 139   { return "d"; }
 140
 141   /* See language.h.  */
 142
 143   const char *natural_name () const override
 144   { return "D"; }
 145
 146   /* See language.h.  */
 147
 148   const std::vector<const char *> &filename_extensions () const override
 149   {
 150     static const std::vector<const char *> extensions = { ".d" };
 151     return extensions;
 152   }
 153
 154   /* See language.h.  */
 155   void language_arch_info (struct gdbarch *gdbarch,
 156                            struct language_arch_info *lai) const override
 157   {
 158     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 159
 160     lai->string_char_type = builtin->builtin_char;
 161     lai->primitive_type_vector
 162       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 163                                 struct type *);
 164
 165     lai->primitive_type_vector [d_primitive_type_void]
 166       = builtin->builtin_void;
 167     lai->primitive_type_vector [d_primitive_type_bool]
 168       = builtin->builtin_bool;
 169     lai->primitive_type_vector [d_primitive_type_byte]
 170       = builtin->builtin_byte;
 171     lai->primitive_type_vector [d_primitive_type_ubyte]
 172       = builtin->builtin_ubyte;
 173     lai->primitive_type_vector [d_primitive_type_short]
 174       = builtin->builtin_short;
 175     lai->primitive_type_vector [d_primitive_type_ushort]
 176       = builtin->builtin_ushort;
 177     lai->primitive_type_vector [d_primitive_type_int]
 178       = builtin->builtin_int;
 179     lai->primitive_type_vector [d_primitive_type_uint]
 180       = builtin->builtin_uint;
 181     lai->primitive_type_vector [d_primitive_type_long]
 182       = builtin->builtin_long;
 183     lai->primitive_type_vector [d_primitive_type_ulong]
 184       = builtin->builtin_ulong;
 185     lai->primitive_type_vector [d_primitive_type_cent]
 186       = builtin->builtin_cent;
 187     lai->primitive_type_vector [d_primitive_type_ucent]
 188       = builtin->builtin_ucent;
 189     lai->primitive_type_vector [d_primitive_type_float]
 190       = builtin->builtin_float;
 191     lai->primitive_type_vector [d_primitive_type_double]
 192       = builtin->builtin_double;
 193     lai->primitive_type_vector [d_primitive_type_real]
 194       = builtin->builtin_real;
 195     lai->primitive_type_vector [d_primitive_type_ifloat]
 196       = builtin->builtin_ifloat;
 197     lai->primitive_type_vector [d_primitive_type_idouble]
 198       = builtin->builtin_idouble;
 199     lai->primitive_type_vector [d_primitive_type_ireal]
 200       = builtin->builtin_ireal;
 201     lai->primitive_type_vector [d_primitive_type_cfloat]
 202       = builtin->builtin_cfloat;
 203     lai->primitive_type_vector [d_primitive_type_cdouble]
 204       = builtin->builtin_cdouble;
 205     lai->primitive_type_vector [d_primitive_type_creal]
 206       = builtin->builtin_creal;
 207     lai->primitive_type_vector [d_primitive_type_char]
 208       = builtin->builtin_char;
 209     lai->primitive_type_vector [d_primitive_type_wchar]
 210       = builtin->builtin_wchar;
 211     lai->primitive_type_vector [d_primitive_type_dchar]
 212       = builtin->builtin_dchar;
 213
 214     lai->bool_type_symbol = "bool";
 215     lai->bool_type_default = builtin->builtin_bool;
 216   }
 217
 218   /* See language.h.  */
 219   bool sniff_from_mangled_name (const char *mangled,
 220                                 char **demangled) const override
 221   {
 222     *demangled = d_demangle (mangled, 0);
 223     return *demangled != NULL;
 224   }
 225
 226   /* See language.h.  */
 227
 228   char *demangle (const char *mangled, int options) const override
 229   {
 230     return d_demangle (mangled, options);
 231   }
 232
 233   /* See language.h.  */
 234
 235   void print_type (struct type *type, const char *varstring,
 236                    struct ui_file *stream, int show, int level,
 237                    const struct type_print_options *flags) const override
 238   {
 239     c_print_type (type, varstring, stream, show, level, flags);
 240   }
 241
 242   /* See language.h.  */
 243
 244   void value_print_inner
 245         (struct value *val, struct ui_file *stream, int recurse,
 246          const struct value_print_options *options) const override
 247   {
 248     return d_value_print_inner (val, stream, recurse, options);
 249   }
 250
 251   /* See language.h.  */
 252
 253   struct block_symbol lookup_symbol_nonlocal
 254         (const char *name, const struct block *block,
 255          const domain_enum domain) const override
 256   {
 257     return d_lookup_symbol_nonlocal (this, name, block, domain);
 258   }
 259
 260   /* See language.h.  */
 261
 262   int parser (struct parser_state *ps) const override
 263   {
 264     return d_parse (ps);
 265   }
 266
 267   /* See language.h.  */
 268
 269   const char *name_of_this () const override
 270   { return "this"; }
 271
 272   /* See language.h.  */
 273
 274   const struct exp_descriptor *expression_ops () const override
 275   { return &exp_descriptor_c; }
 276
 277   /* See language.h.  */
 278
 279   const struct op_print *opcode_print_table () const override
 280   { return d_op_print_tab; }
 281 };
 282
 283 /* Single instance of the D language class.  */
 284
 285 static d_language d_language_defn;
 286
 287 /* Build all D language types for the specified architecture.  */
 288
 289 static void *
 290 build_d_types (struct gdbarch *gdbarch)
 291 {
 292   struct builtin_d_type *builtin_d_type
 293     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 294
 295   /* Basic types.  */
 296   builtin_d_type->builtin_void
 297     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 298   builtin_d_type->builtin_bool
 299     = arch_boolean_type (gdbarch, 8, 1, "bool");
 300   builtin_d_type->builtin_byte
 301     = arch_integer_type (gdbarch, 8, 0, "byte");
 302   builtin_d_type->builtin_ubyte
 303     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 304   builtin_d_type->builtin_short
 305     = arch_integer_type (gdbarch, 16, 0, "short");
 306   builtin_d_type->builtin_ushort
 307     = arch_integer_type (gdbarch, 16, 1, "ushort");
 308   builtin_d_type->builtin_int
 309     = arch_integer_type (gdbarch, 32, 0, "int");
 310   builtin_d_type->builtin_uint
 311     = arch_integer_type (gdbarch, 32, 1, "uint");
 312   builtin_d_type->builtin_long
 313     = arch_integer_type (gdbarch, 64, 0, "long");
 314   builtin_d_type->builtin_ulong
 315     = arch_integer_type (gdbarch, 64, 1, "ulong");
 316   builtin_d_type->builtin_cent
 317     = arch_integer_type (gdbarch, 128, 0, "cent");
 318   builtin_d_type->builtin_ucent
 319     = arch_integer_type (gdbarch, 128, 1, "ucent");
 320   builtin_d_type->builtin_float
 321     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 322                        "float", gdbarch_float_format (gdbarch));
 323   builtin_d_type->builtin_double
 324     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 325                        "double", gdbarch_double_format (gdbarch));
 326   builtin_d_type->builtin_real
 327     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 328                        "real", gdbarch_long_double_format (gdbarch));
 329
 330   builtin_d_type->builtin_byte->set_instance_flags
 331     (builtin_d_type->builtin_byte->instance_flags ()
 332      | TYPE_INSTANCE_FLAG_NOTTEXT);
 333
 334   builtin_d_type->builtin_ubyte->set_instance_flags
 335     (builtin_d_type->builtin_ubyte->instance_flags ()
 336      | TYPE_INSTANCE_FLAG_NOTTEXT);
 337
 338   /* Imaginary and complex types.  */
 339   builtin_d_type->builtin_ifloat
 340     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 341                        "ifloat", gdbarch_float_format (gdbarch));
 342   builtin_d_type->builtin_idouble
 343     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 344                        "idouble", gdbarch_double_format (gdbarch));
 345   builtin_d_type->builtin_ireal
 346     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 347                        "ireal", gdbarch_long_double_format (gdbarch));
 348   builtin_d_type->builtin_cfloat
 349     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 350   builtin_d_type->builtin_cdouble
 351     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 352   builtin_d_type->builtin_creal
 353     = init_complex_type ("creal", builtin_d_type->builtin_real);
 354
 355   /* Character types.  */
 356   builtin_d_type->builtin_char
 357     = arch_character_type (gdbarch, 8, 1, "char");
 358   builtin_d_type->builtin_wchar
 359     = arch_character_type (gdbarch, 16, 1, "wchar");
 360   builtin_d_type->builtin_dchar
 361     = arch_character_type (gdbarch, 32, 1, "dchar");
 362
 363   return builtin_d_type;
 364 }
 365
 366 static struct gdbarch_data *d_type_data;
 367
 368 /* Return the D type table for the specified architecture.  */
 369
 370 const struct builtin_d_type *
 371 builtin_d_type (struct gdbarch *gdbarch)
 372 {
 373   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 374 }
 375
 376 void _initialize_d_language ();
 377 void
 378 _initialize_d_language ()
 379 {
 380   d_type_data = gdbarch_data_register_post_init (build_d_types);
 381 }