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