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