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   range_check_off,
 132   case_sensitive_on,
 133   array_row_major,
 134   macro_expansion_no,
 135   &exp_descriptor_c,
 136   false,                        /* la_store_sym_names_in_linkage_form_p */
 137   d_op_print_tab,               /* Expression operators for printing.  */
 138   &default_varobj_ops,
 139 };
 140
 141 /* Class representing the D language.  */
 142
 143 class d_language : public language_defn
 144 {
 145 public:
 146   d_language ()
 147     : language_defn (language_d, d_language_data)
 148   { /* Nothing.  */ }
 149
 150   /* See language.h.  */
 151
 152   const char *name () const override
 153   { return "d"; }
 154
 155   /* See language.h.  */
 156
 157   const char *natural_name () const override
 158   { return "D"; }
 159
 160   /* See language.h.  */
 161
 162   const std::vector<const char *> &filename_extensions () const override
 163   {
 164     static const std::vector<const char *> extensions = { ".d" };
 165     return extensions;
 166   }
 167
 168   /* See language.h.  */
 169   void language_arch_info (struct gdbarch *gdbarch,
 170                            struct language_arch_info *lai) const override
 171   {
 172     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 173
 174     lai->string_char_type = builtin->builtin_char;
 175     lai->primitive_type_vector
 176       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 177                                 struct type *);
 178
 179     lai->primitive_type_vector [d_primitive_type_void]
 180       = builtin->builtin_void;
 181     lai->primitive_type_vector [d_primitive_type_bool]
 182       = builtin->builtin_bool;
 183     lai->primitive_type_vector [d_primitive_type_byte]
 184       = builtin->builtin_byte;
 185     lai->primitive_type_vector [d_primitive_type_ubyte]
 186       = builtin->builtin_ubyte;
 187     lai->primitive_type_vector [d_primitive_type_short]
 188       = builtin->builtin_short;
 189     lai->primitive_type_vector [d_primitive_type_ushort]
 190       = builtin->builtin_ushort;
 191     lai->primitive_type_vector [d_primitive_type_int]
 192       = builtin->builtin_int;
 193     lai->primitive_type_vector [d_primitive_type_uint]
 194       = builtin->builtin_uint;
 195     lai->primitive_type_vector [d_primitive_type_long]
 196       = builtin->builtin_long;
 197     lai->primitive_type_vector [d_primitive_type_ulong]
 198       = builtin->builtin_ulong;
 199     lai->primitive_type_vector [d_primitive_type_cent]
 200       = builtin->builtin_cent;
 201     lai->primitive_type_vector [d_primitive_type_ucent]
 202       = builtin->builtin_ucent;
 203     lai->primitive_type_vector [d_primitive_type_float]
 204       = builtin->builtin_float;
 205     lai->primitive_type_vector [d_primitive_type_double]
 206       = builtin->builtin_double;
 207     lai->primitive_type_vector [d_primitive_type_real]
 208       = builtin->builtin_real;
 209     lai->primitive_type_vector [d_primitive_type_ifloat]
 210       = builtin->builtin_ifloat;
 211     lai->primitive_type_vector [d_primitive_type_idouble]
 212       = builtin->builtin_idouble;
 213     lai->primitive_type_vector [d_primitive_type_ireal]
 214       = builtin->builtin_ireal;
 215     lai->primitive_type_vector [d_primitive_type_cfloat]
 216       = builtin->builtin_cfloat;
 217     lai->primitive_type_vector [d_primitive_type_cdouble]
 218       = builtin->builtin_cdouble;
 219     lai->primitive_type_vector [d_primitive_type_creal]
 220       = builtin->builtin_creal;
 221     lai->primitive_type_vector [d_primitive_type_char]
 222       = builtin->builtin_char;
 223     lai->primitive_type_vector [d_primitive_type_wchar]
 224       = builtin->builtin_wchar;
 225     lai->primitive_type_vector [d_primitive_type_dchar]
 226       = builtin->builtin_dchar;
 227
 228     lai->bool_type_symbol = "bool";
 229     lai->bool_type_default = builtin->builtin_bool;
 230   }
 231
 232   /* See language.h.  */
 233   bool sniff_from_mangled_name (const char *mangled,
 234                                 char **demangled) const override
 235   {
 236     *demangled = d_demangle (mangled, 0);
 237     return *demangled != NULL;
 238   }
 239
 240   /* See language.h.  */
 241
 242   char *demangle (const char *mangled, int options) const override
 243   {
 244     return d_demangle (mangled, options);
 245   }
 246
 247   /* See language.h.  */
 248
 249   void print_type (struct type *type, const char *varstring,
 250                    struct ui_file *stream, int show, int level,
 251                    const struct type_print_options *flags) const override
 252   {
 253     c_print_type (type, varstring, stream, show, level, flags);
 254   }
 255
 256   /* See language.h.  */
 257
 258   void value_print_inner
 259         (struct value *val, struct ui_file *stream, int recurse,
 260          const struct value_print_options *options) const override
 261   {
 262     return d_value_print_inner (val, stream, recurse, options);
 263   }
 264
 265   /* See language.h.  */
 266
 267   struct block_symbol lookup_symbol_nonlocal
 268         (const char *name, const struct block *block,
 269          const domain_enum domain) const override
 270   {
 271     return d_lookup_symbol_nonlocal (this, name, block, domain);
 272   }
 273
 274   /* See language.h.  */
 275
 276   int parser (struct parser_state *ps) const override
 277   {
 278     return d_parse (ps);
 279   }
 280
 281   /* See language.h.  */
 282
 283   const char *name_of_this () const override
 284   { return "this"; }
 285 };
 286
 287 /* Single instance of the D language class.  */
 288
 289 static d_language d_language_defn;
 290
 291 /* Build all D language types for the specified architecture.  */
 292
 293 static void *
 294 build_d_types (struct gdbarch *gdbarch)
 295 {
 296   struct builtin_d_type *builtin_d_type
 297     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 298
 299   /* Basic types.  */
 300   builtin_d_type->builtin_void
 301     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 302   builtin_d_type->builtin_bool
 303     = arch_boolean_type (gdbarch, 8, 1, "bool");
 304   builtin_d_type->builtin_byte
 305     = arch_integer_type (gdbarch, 8, 0, "byte");
 306   builtin_d_type->builtin_ubyte
 307     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 308   builtin_d_type->builtin_short
 309     = arch_integer_type (gdbarch, 16, 0, "short");
 310   builtin_d_type->builtin_ushort
 311     = arch_integer_type (gdbarch, 16, 1, "ushort");
 312   builtin_d_type->builtin_int
 313     = arch_integer_type (gdbarch, 32, 0, "int");
 314   builtin_d_type->builtin_uint
 315     = arch_integer_type (gdbarch, 32, 1, "uint");
 316   builtin_d_type->builtin_long
 317     = arch_integer_type (gdbarch, 64, 0, "long");
 318   builtin_d_type->builtin_ulong
 319     = arch_integer_type (gdbarch, 64, 1, "ulong");
 320   builtin_d_type->builtin_cent
 321     = arch_integer_type (gdbarch, 128, 0, "cent");
 322   builtin_d_type->builtin_ucent
 323     = arch_integer_type (gdbarch, 128, 1, "ucent");
 324   builtin_d_type->builtin_float
 325     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 326                        "float", gdbarch_float_format (gdbarch));
 327   builtin_d_type->builtin_double
 328     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 329                        "double", gdbarch_double_format (gdbarch));
 330   builtin_d_type->builtin_real
 331     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 332                        "real", gdbarch_long_double_format (gdbarch));
 333
 334   builtin_d_type->builtin_byte->set_instance_flags
 335     (builtin_d_type->builtin_byte->instance_flags ()
 336      | TYPE_INSTANCE_FLAG_NOTTEXT);
 337
 338   builtin_d_type->builtin_ubyte->set_instance_flags
 339     (builtin_d_type->builtin_ubyte->instance_flags ()
 340      | TYPE_INSTANCE_FLAG_NOTTEXT);
 341
 342   /* Imaginary and complex types.  */
 343   builtin_d_type->builtin_ifloat
 344     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 345                        "ifloat", gdbarch_float_format (gdbarch));
 346   builtin_d_type->builtin_idouble
 347     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 348                        "idouble", gdbarch_double_format (gdbarch));
 349   builtin_d_type->builtin_ireal
 350     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 351                        "ireal", gdbarch_long_double_format (gdbarch));
 352   builtin_d_type->builtin_cfloat
 353     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 354   builtin_d_type->builtin_cdouble
 355     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 356   builtin_d_type->builtin_creal
 357     = init_complex_type ("creal", builtin_d_type->builtin_real);
 358
 359   /* Character types.  */
 360   builtin_d_type->builtin_char
 361     = arch_character_type (gdbarch, 8, 1, "char");
 362   builtin_d_type->builtin_wchar
 363     = arch_character_type (gdbarch, 16, 1, "wchar");
 364   builtin_d_type->builtin_dchar
 365     = arch_character_type (gdbarch, 32, 1, "dchar");
 366
 367   return builtin_d_type;
 368 }
 369
 370 static struct gdbarch_data *d_type_data;
 371
 372 /* Return the D type table for the specified architecture.  */
 373
 374 const struct builtin_d_type *
 375 builtin_d_type (struct gdbarch *gdbarch)
 376 {
 377   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 378 }
 379
 380 void _initialize_d_language ();
 381 void
 382 _initialize_d_language ()
 383 {
 384   d_type_data = gdbarch_data_register_post_init (build_d_types);
 385 }