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   false,                        /* la_store_sym_names_in_linkage_form_p */
 146   d_op_print_tab,               /* Expression operators for printing.  */
 147   1,                            /* C-style arrays.  */
 148   0,                            /* String lower bound.  */
 149   &default_varobj_ops,
 150 };
 151
 152 /* Class representing the D language.  */
 153
 154 class d_language : public language_defn
 155 {
 156 public:
 157   d_language ()
 158     : language_defn (language_d, d_language_data)
 159   { /* Nothing.  */ }
 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
 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   builtin_d_type->builtin_byte->set_instance_flags
 328     (builtin_d_type->builtin_byte->instance_flags ()
 329      | TYPE_INSTANCE_FLAG_NOTTEXT);
 330
 331   builtin_d_type->builtin_ubyte->set_instance_flags
 332     (builtin_d_type->builtin_ubyte->instance_flags ()
 333      | TYPE_INSTANCE_FLAG_NOTTEXT);
 334
 335   /* Imaginary and complex types.  */
 336   builtin_d_type->builtin_ifloat
 337     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 338                        "ifloat", gdbarch_float_format (gdbarch));
 339   builtin_d_type->builtin_idouble
 340     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 341                        "idouble", gdbarch_double_format (gdbarch));
 342   builtin_d_type->builtin_ireal
 343     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 344                        "ireal", gdbarch_long_double_format (gdbarch));
 345   builtin_d_type->builtin_cfloat
 346     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 347   builtin_d_type->builtin_cdouble
 348     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 349   builtin_d_type->builtin_creal
 350     = init_complex_type ("creal", builtin_d_type->builtin_real);
 351
 352   /* Character types.  */
 353   builtin_d_type->builtin_char
 354     = arch_character_type (gdbarch, 8, 1, "char");
 355   builtin_d_type->builtin_wchar
 356     = arch_character_type (gdbarch, 16, 1, "wchar");
 357   builtin_d_type->builtin_dchar
 358     = arch_character_type (gdbarch, 32, 1, "dchar");
 359
 360   return builtin_d_type;
 361 }
 362
 363 static struct gdbarch_data *d_type_data;
 364
 365 /* Return the D type table for the specified architecture.  */
 366
 367 const struct builtin_d_type *
 368 builtin_d_type (struct gdbarch *gdbarch)
 369 {
 370   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 371 }
 372
 373 void _initialize_d_language ();
 374 void
 375 _initialize_d_language ()
 376 {
 377   d_type_data = gdbarch_data_register_post_init (build_d_types);
 378 }