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 *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   c_printchar,                  /* Print a character constant.  */
 146   c_printstr,                   /* Function to print string constant.  */
 147   c_print_typedef,              /* Print a typedef using appropriate
 148                                    syntax.  */
 149   "this",
 150   false,                        /* la_store_sym_names_in_linkage_form_p */
 151   d_op_print_tab,               /* Expression operators for printing.  */
 152   1,                            /* C-style arrays.  */
 153   0,                            /* String lower bound.  */
 154   &default_varobj_ops,
 155   c_is_string_type_p,
 156   "{...}"                       /* la_struct_too_deep_ellipsis */
 157 };
 158
 159 /* Class representing the D language.  */
 160
 161 class d_language : public language_defn
 162 {
 163 public:
 164   d_language ()
 165     : language_defn (language_d, d_language_data)
 166   { /* Nothing.  */ }
 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
 282 /* Single instance of the D language class.  */
 283
 284 static d_language d_language_defn;
 285
 286 /* Build all D language types for the specified architecture.  */
 287
 288 static void *
 289 build_d_types (struct gdbarch *gdbarch)
 290 {
 291   struct builtin_d_type *builtin_d_type
 292     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 293
 294   /* Basic types.  */
 295   builtin_d_type->builtin_void
 296     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 297   builtin_d_type->builtin_bool
 298     = arch_boolean_type (gdbarch, 8, 1, "bool");
 299   builtin_d_type->builtin_byte
 300     = arch_integer_type (gdbarch, 8, 0, "byte");
 301   builtin_d_type->builtin_ubyte
 302     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 303   builtin_d_type->builtin_short
 304     = arch_integer_type (gdbarch, 16, 0, "short");
 305   builtin_d_type->builtin_ushort
 306     = arch_integer_type (gdbarch, 16, 1, "ushort");
 307   builtin_d_type->builtin_int
 308     = arch_integer_type (gdbarch, 32, 0, "int");
 309   builtin_d_type->builtin_uint
 310     = arch_integer_type (gdbarch, 32, 1, "uint");
 311   builtin_d_type->builtin_long
 312     = arch_integer_type (gdbarch, 64, 0, "long");
 313   builtin_d_type->builtin_ulong
 314     = arch_integer_type (gdbarch, 64, 1, "ulong");
 315   builtin_d_type->builtin_cent
 316     = arch_integer_type (gdbarch, 128, 0, "cent");
 317   builtin_d_type->builtin_ucent
 318     = arch_integer_type (gdbarch, 128, 1, "ucent");
 319   builtin_d_type->builtin_float
 320     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 321                        "float", gdbarch_float_format (gdbarch));
 322   builtin_d_type->builtin_double
 323     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 324                        "double", gdbarch_double_format (gdbarch));
 325   builtin_d_type->builtin_real
 326     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 327                        "real", gdbarch_long_double_format (gdbarch));
 328
 329   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 330     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 331   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 332     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 333
 334   /* Imaginary and complex types.  */
 335   builtin_d_type->builtin_ifloat
 336     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 337                        "ifloat", gdbarch_float_format (gdbarch));
 338   builtin_d_type->builtin_idouble
 339     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 340                        "idouble", gdbarch_double_format (gdbarch));
 341   builtin_d_type->builtin_ireal
 342     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 343                        "ireal", gdbarch_long_double_format (gdbarch));
 344   builtin_d_type->builtin_cfloat
 345     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 346   builtin_d_type->builtin_cdouble
 347     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 348   builtin_d_type->builtin_creal
 349     = init_complex_type ("creal", builtin_d_type->builtin_real);
 350
 351   /* Character types.  */
 352   builtin_d_type->builtin_char
 353     = arch_character_type (gdbarch, 8, 1, "char");
 354   builtin_d_type->builtin_wchar
 355     = arch_character_type (gdbarch, 16, 1, "wchar");
 356   builtin_d_type->builtin_dchar
 357     = arch_character_type (gdbarch, 32, 1, "dchar");
 358
 359   return builtin_d_type;
 360 }
 361
 362 static struct gdbarch_data *d_type_data;
 363
 364 /* Return the D type table for the specified architecture.  */
 365
 366 const struct builtin_d_type *
 367 builtin_d_type (struct gdbarch *gdbarch)
 368 {
 369   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 370 }
 371
 372 void _initialize_d_language ();
 373 void
 374 _initialize_d_language ()
 375 {
 376   d_type_data = gdbarch_data_register_post_init (build_d_types);
 377 }