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