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 static const char * const d_extensions[] =
 128 {
 129   ".d", NULL
 130 };
 131
 132 /* Constant data that describes the D language.  */
 133
 134 extern const struct language_data d_language_data =
 135 {
 136   "d",
 137   "D",
 138   language_d,
 139   range_check_off,
 140   case_sensitive_on,
 141   array_row_major,
 142   macro_expansion_no,
 143   d_extensions,
 144   &exp_descriptor_c,
 145   "this",
 146   false,                        /* la_store_sym_names_in_linkage_form_p */
 147   d_op_print_tab,               /* Expression operators for printing.  */
 148   1,                            /* C-style arrays.  */
 149   0,                            /* String lower bound.  */
 150   &default_varobj_ops,
 151 };
 152
 153 /* Class representing the D language.  */
 154
 155 class d_language : public language_defn
 156 {
 157 public:
 158   d_language ()
 159     : language_defn (language_d, d_language_data)
 160   { /* Nothing.  */ }
 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
 276 /* Single instance of the D language class.  */
 277
 278 static d_language d_language_defn;
 279
 280 /* Build all D language types for the specified architecture.  */
 281
 282 static void *
 283 build_d_types (struct gdbarch *gdbarch)
 284 {
 285   struct builtin_d_type *builtin_d_type
 286     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 287
 288   /* Basic types.  */
 289   builtin_d_type->builtin_void
 290     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 291   builtin_d_type->builtin_bool
 292     = arch_boolean_type (gdbarch, 8, 1, "bool");
 293   builtin_d_type->builtin_byte
 294     = arch_integer_type (gdbarch, 8, 0, "byte");
 295   builtin_d_type->builtin_ubyte
 296     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 297   builtin_d_type->builtin_short
 298     = arch_integer_type (gdbarch, 16, 0, "short");
 299   builtin_d_type->builtin_ushort
 300     = arch_integer_type (gdbarch, 16, 1, "ushort");
 301   builtin_d_type->builtin_int
 302     = arch_integer_type (gdbarch, 32, 0, "int");
 303   builtin_d_type->builtin_uint
 304     = arch_integer_type (gdbarch, 32, 1, "uint");
 305   builtin_d_type->builtin_long
 306     = arch_integer_type (gdbarch, 64, 0, "long");
 307   builtin_d_type->builtin_ulong
 308     = arch_integer_type (gdbarch, 64, 1, "ulong");
 309   builtin_d_type->builtin_cent
 310     = arch_integer_type (gdbarch, 128, 0, "cent");
 311   builtin_d_type->builtin_ucent
 312     = arch_integer_type (gdbarch, 128, 1, "ucent");
 313   builtin_d_type->builtin_float
 314     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 315                        "float", gdbarch_float_format (gdbarch));
 316   builtin_d_type->builtin_double
 317     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 318                        "double", gdbarch_double_format (gdbarch));
 319   builtin_d_type->builtin_real
 320     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 321                        "real", gdbarch_long_double_format (gdbarch));
 322
 323   builtin_d_type->builtin_byte->set_instance_flags
 324     (builtin_d_type->builtin_byte->instance_flags ()
 325      | TYPE_INSTANCE_FLAG_NOTTEXT);
 326
 327   builtin_d_type->builtin_ubyte->set_instance_flags
 328     (builtin_d_type->builtin_ubyte->instance_flags ()
 329      | TYPE_INSTANCE_FLAG_NOTTEXT);
 330
 331   /* Imaginary and complex types.  */
 332   builtin_d_type->builtin_ifloat
 333     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 334                        "ifloat", gdbarch_float_format (gdbarch));
 335   builtin_d_type->builtin_idouble
 336     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 337                        "idouble", gdbarch_double_format (gdbarch));
 338   builtin_d_type->builtin_ireal
 339     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 340                        "ireal", gdbarch_long_double_format (gdbarch));
 341   builtin_d_type->builtin_cfloat
 342     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 343   builtin_d_type->builtin_cdouble
 344     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 345   builtin_d_type->builtin_creal
 346     = init_complex_type ("creal", builtin_d_type->builtin_real);
 347
 348   /* Character types.  */
 349   builtin_d_type->builtin_char
 350     = arch_character_type (gdbarch, 8, 1, "char");
 351   builtin_d_type->builtin_wchar
 352     = arch_character_type (gdbarch, 16, 1, "wchar");
 353   builtin_d_type->builtin_dchar
 354     = arch_character_type (gdbarch, 32, 1, "dchar");
 355
 356   return builtin_d_type;
 357 }
 358
 359 static struct gdbarch_data *d_type_data;
 360
 361 /* Return the D type table for the specified architecture.  */
 362
 363 const struct builtin_d_type *
 364 builtin_d_type (struct gdbarch *gdbarch)
 365 {
 366   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 367 }
 368
 369 void _initialize_d_language ();
 370 void
 371 _initialize_d_language ()
 372 {
 373   d_type_data = gdbarch_data_register_post_init (build_d_types);
 374 }