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