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