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   macro_expansion_no,
 132   &exp_descriptor_c,
 133   d_op_print_tab,               /* Expression operators for printing.  */
 134   &default_varobj_ops,
 135 };
 136
 137 /* Class representing the D language.  */
 138
 139 class d_language : public language_defn
 140 {
 141 public:
 142   d_language ()
 143     : language_defn (language_d, d_language_data)
 144   { /* Nothing.  */ }
 145
 146   /* See language.h.  */
 147
 148   const char *name () const override
 149   { return "d"; }
 150
 151   /* See language.h.  */
 152
 153   const char *natural_name () const override
 154   { return "D"; }
 155
 156   /* See language.h.  */
 157
 158   const std::vector<const char *> &filename_extensions () const override
 159   {
 160     static const std::vector<const char *> extensions = { ".d" };
 161     return extensions;
 162   }
 163
 164   /* See language.h.  */
 165   void language_arch_info (struct gdbarch *gdbarch,
 166                            struct language_arch_info *lai) const override
 167   {
 168     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 169
 170     lai->string_char_type = builtin->builtin_char;
 171     lai->primitive_type_vector
 172       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 173                                 struct type *);
 174
 175     lai->primitive_type_vector [d_primitive_type_void]
 176       = builtin->builtin_void;
 177     lai->primitive_type_vector [d_primitive_type_bool]
 178       = builtin->builtin_bool;
 179     lai->primitive_type_vector [d_primitive_type_byte]
 180       = builtin->builtin_byte;
 181     lai->primitive_type_vector [d_primitive_type_ubyte]
 182       = builtin->builtin_ubyte;
 183     lai->primitive_type_vector [d_primitive_type_short]
 184       = builtin->builtin_short;
 185     lai->primitive_type_vector [d_primitive_type_ushort]
 186       = builtin->builtin_ushort;
 187     lai->primitive_type_vector [d_primitive_type_int]
 188       = builtin->builtin_int;
 189     lai->primitive_type_vector [d_primitive_type_uint]
 190       = builtin->builtin_uint;
 191     lai->primitive_type_vector [d_primitive_type_long]
 192       = builtin->builtin_long;
 193     lai->primitive_type_vector [d_primitive_type_ulong]
 194       = builtin->builtin_ulong;
 195     lai->primitive_type_vector [d_primitive_type_cent]
 196       = builtin->builtin_cent;
 197     lai->primitive_type_vector [d_primitive_type_ucent]
 198       = builtin->builtin_ucent;
 199     lai->primitive_type_vector [d_primitive_type_float]
 200       = builtin->builtin_float;
 201     lai->primitive_type_vector [d_primitive_type_double]
 202       = builtin->builtin_double;
 203     lai->primitive_type_vector [d_primitive_type_real]
 204       = builtin->builtin_real;
 205     lai->primitive_type_vector [d_primitive_type_ifloat]
 206       = builtin->builtin_ifloat;
 207     lai->primitive_type_vector [d_primitive_type_idouble]
 208       = builtin->builtin_idouble;
 209     lai->primitive_type_vector [d_primitive_type_ireal]
 210       = builtin->builtin_ireal;
 211     lai->primitive_type_vector [d_primitive_type_cfloat]
 212       = builtin->builtin_cfloat;
 213     lai->primitive_type_vector [d_primitive_type_cdouble]
 214       = builtin->builtin_cdouble;
 215     lai->primitive_type_vector [d_primitive_type_creal]
 216       = builtin->builtin_creal;
 217     lai->primitive_type_vector [d_primitive_type_char]
 218       = builtin->builtin_char;
 219     lai->primitive_type_vector [d_primitive_type_wchar]
 220       = builtin->builtin_wchar;
 221     lai->primitive_type_vector [d_primitive_type_dchar]
 222       = builtin->builtin_dchar;
 223
 224     lai->bool_type_symbol = "bool";
 225     lai->bool_type_default = builtin->builtin_bool;
 226   }
 227
 228   /* See language.h.  */
 229   bool sniff_from_mangled_name (const char *mangled,
 230                                 char **demangled) const override
 231   {
 232     *demangled = d_demangle (mangled, 0);
 233     return *demangled != NULL;
 234   }
 235
 236   /* See language.h.  */
 237
 238   char *demangle (const char *mangled, int options) const override
 239   {
 240     return d_demangle (mangled, options);
 241   }
 242
 243   /* See language.h.  */
 244
 245   void print_type (struct type *type, const char *varstring,
 246                    struct ui_file *stream, int show, int level,
 247                    const struct type_print_options *flags) const override
 248   {
 249     c_print_type (type, varstring, stream, show, level, flags);
 250   }
 251
 252   /* See language.h.  */
 253
 254   void value_print_inner
 255         (struct value *val, struct ui_file *stream, int recurse,
 256          const struct value_print_options *options) const override
 257   {
 258     return d_value_print_inner (val, stream, recurse, options);
 259   }
 260
 261   /* See language.h.  */
 262
 263   struct block_symbol lookup_symbol_nonlocal
 264         (const char *name, const struct block *block,
 265          const domain_enum domain) const override
 266   {
 267     return d_lookup_symbol_nonlocal (this, name, block, domain);
 268   }
 269
 270   /* See language.h.  */
 271
 272   int parser (struct parser_state *ps) const override
 273   {
 274     return d_parse (ps);
 275   }
 276
 277   /* See language.h.  */
 278
 279   const char *name_of_this () const override
 280   { return "this"; }
 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 }