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