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