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