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 /* la_sniff_from_mangled_name implementation for D.  */
  60
  61 static int
  62 d_sniff_from_mangled_name (const char *mangled, char **demangled)
  63 {
  64   *demangled = d_demangle (mangled, 0);
  65   return *demangled != NULL;
  66 }
  67
  68 /* Table mapping opcodes into strings for printing operators
  69    and precedences of the operators.  */
  70 static const struct op_print d_op_print_tab[] =
  71 {
  72   {",", BINOP_COMMA, PREC_COMMA, 0},
  73   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  74   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  75   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  76   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  77   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  78   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  79   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  80   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  81   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  82   {">=", BINOP_GEQ, PREC_ORDER, 0},
  83   {">", BINOP_GTR, PREC_ORDER, 0},
  84   {"<", BINOP_LESS, PREC_ORDER, 0},
  85   {">>", BINOP_RSH, PREC_SHIFT, 0},
  86   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  87   {"+", BINOP_ADD, PREC_ADD, 0},
  88   {"-", BINOP_SUB, PREC_ADD, 0},
  89   {"~", BINOP_CONCAT, PREC_ADD, 0},
  90   {"*", BINOP_MUL, PREC_MUL, 0},
  91   {"/", BINOP_DIV, PREC_MUL, 0},
  92   {"%", BINOP_REM, PREC_MUL, 0},
  93   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  94   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  95   {"-", UNOP_NEG, PREC_PREFIX, 0},
  96   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  97   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  98   {"*", UNOP_IND, PREC_PREFIX, 0},
  99   {"&", UNOP_ADDR, PREC_PREFIX, 0},
 100   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 101   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 102   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 103   {NULL, OP_NULL, PREC_PREFIX, 0}
 104 };
 105
 106 /* Mapping of all D basic data types into the language vector.  */
 107
 108 enum d_primitive_types {
 109   d_primitive_type_void,
 110   d_primitive_type_bool,
 111   d_primitive_type_byte,
 112   d_primitive_type_ubyte,
 113   d_primitive_type_short,
 114   d_primitive_type_ushort,
 115   d_primitive_type_int,
 116   d_primitive_type_uint,
 117   d_primitive_type_long,
 118   d_primitive_type_ulong,
 119   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 120   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 121   d_primitive_type_float,
 122   d_primitive_type_double,
 123   d_primitive_type_real,
 124   d_primitive_type_ifloat,  /* Imaginary float types.  */
 125   d_primitive_type_idouble,
 126   d_primitive_type_ireal,
 127   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 128   d_primitive_type_cdouble,
 129   d_primitive_type_creal,
 130   d_primitive_type_char,    /* Unsigned character types.  */
 131   d_primitive_type_wchar,
 132   d_primitive_type_dchar,
 133   nr_d_primitive_types
 134 };
 135
 136 static const char *d_extensions[] =
 137 {
 138   ".d", NULL
 139 };
 140
 141 /* Constant data that describes the D language.  */
 142
 143 extern const struct language_data d_language_data =
 144 {
 145   "d",
 146   "D",
 147   language_d,
 148   range_check_off,
 149   case_sensitive_on,
 150   array_row_major,
 151   macro_expansion_no,
 152   d_extensions,
 153   &exp_descriptor_c,
 154   d_parse,
 155   null_post_parser,
 156   c_printchar,                  /* Print a character constant.  */
 157   c_printstr,                   /* Function to print string constant.  */
 158   c_emit_char,                  /* Print a single char.  */
 159   c_print_type,                 /* Print a type using appropriate syntax.  */
 160   c_print_typedef,              /* Print a typedef using appropriate
 161                                    syntax.  */
 162   d_value_print_inner,          /* la_value_print_inner */
 163   c_value_print,                /* Print a top-level value.  */
 164   NULL,                         /* Language specific skip_trampoline.  */
 165   "this",
 166   false,                        /* la_store_sym_names_in_linkage_form_p */
 167   d_lookup_symbol_nonlocal,
 168   basic_lookup_transparent_type,
 169   d_demangle,                   /* Language specific symbol demangler.  */
 170   d_sniff_from_mangled_name,
 171   NULL,                         /* Language specific
 172                                    class_name_from_physname.  */
 173   d_op_print_tab,               /* Expression operators for printing.  */
 174   1,                            /* C-style arrays.  */
 175   0,                            /* String lower bound.  */
 176   default_word_break_characters,
 177   default_collect_symbol_completion_matches,
 178   c_watch_location_expression,
 179   NULL,                         /* la_get_symbol_name_matcher */
 180   iterate_over_symbols,
 181   default_search_name_hash,
 182   &default_varobj_ops,
 183   NULL,
 184   NULL,
 185   c_is_string_type_p,
 186   "{...}"                       /* la_struct_too_deep_ellipsis */
 187 };
 188
 189 /* Class representing the D language.  */
 190
 191 class d_language : public language_defn
 192 {
 193 public:
 194   d_language ()
 195     : language_defn (language_d, d_language_data)
 196   { /* Nothing.  */ }
 197
 198   /* See language.h.  */
 199   void language_arch_info (struct gdbarch *gdbarch,
 200                            struct language_arch_info *lai) const override
 201   {
 202     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 203
 204     lai->string_char_type = builtin->builtin_char;
 205     lai->primitive_type_vector
 206       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 207                                 struct type *);
 208
 209     lai->primitive_type_vector [d_primitive_type_void]
 210       = builtin->builtin_void;
 211     lai->primitive_type_vector [d_primitive_type_bool]
 212       = builtin->builtin_bool;
 213     lai->primitive_type_vector [d_primitive_type_byte]
 214       = builtin->builtin_byte;
 215     lai->primitive_type_vector [d_primitive_type_ubyte]
 216       = builtin->builtin_ubyte;
 217     lai->primitive_type_vector [d_primitive_type_short]
 218       = builtin->builtin_short;
 219     lai->primitive_type_vector [d_primitive_type_ushort]
 220       = builtin->builtin_ushort;
 221     lai->primitive_type_vector [d_primitive_type_int]
 222       = builtin->builtin_int;
 223     lai->primitive_type_vector [d_primitive_type_uint]
 224       = builtin->builtin_uint;
 225     lai->primitive_type_vector [d_primitive_type_long]
 226       = builtin->builtin_long;
 227     lai->primitive_type_vector [d_primitive_type_ulong]
 228       = builtin->builtin_ulong;
 229     lai->primitive_type_vector [d_primitive_type_cent]
 230       = builtin->builtin_cent;
 231     lai->primitive_type_vector [d_primitive_type_ucent]
 232       = builtin->builtin_ucent;
 233     lai->primitive_type_vector [d_primitive_type_float]
 234       = builtin->builtin_float;
 235     lai->primitive_type_vector [d_primitive_type_double]
 236       = builtin->builtin_double;
 237     lai->primitive_type_vector [d_primitive_type_real]
 238       = builtin->builtin_real;
 239     lai->primitive_type_vector [d_primitive_type_ifloat]
 240       = builtin->builtin_ifloat;
 241     lai->primitive_type_vector [d_primitive_type_idouble]
 242       = builtin->builtin_idouble;
 243     lai->primitive_type_vector [d_primitive_type_ireal]
 244       = builtin->builtin_ireal;
 245     lai->primitive_type_vector [d_primitive_type_cfloat]
 246       = builtin->builtin_cfloat;
 247     lai->primitive_type_vector [d_primitive_type_cdouble]
 248       = builtin->builtin_cdouble;
 249     lai->primitive_type_vector [d_primitive_type_creal]
 250       = builtin->builtin_creal;
 251     lai->primitive_type_vector [d_primitive_type_char]
 252       = builtin->builtin_char;
 253     lai->primitive_type_vector [d_primitive_type_wchar]
 254       = builtin->builtin_wchar;
 255     lai->primitive_type_vector [d_primitive_type_dchar]
 256       = builtin->builtin_dchar;
 257
 258     lai->bool_type_symbol = "bool";
 259     lai->bool_type_default = builtin->builtin_bool;
 260   }
 261 };
 262
 263 /* Single instance of the D language class.  */
 264
 265 static d_language d_language_defn;
 266
 267 /* Build all D language types for the specified architecture.  */
 268
 269 static void *
 270 build_d_types (struct gdbarch *gdbarch)
 271 {
 272   struct builtin_d_type *builtin_d_type
 273     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 274
 275   /* Basic types.  */
 276   builtin_d_type->builtin_void
 277     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 278   builtin_d_type->builtin_bool
 279     = arch_boolean_type (gdbarch, 8, 1, "bool");
 280   builtin_d_type->builtin_byte
 281     = arch_integer_type (gdbarch, 8, 0, "byte");
 282   builtin_d_type->builtin_ubyte
 283     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 284   builtin_d_type->builtin_short
 285     = arch_integer_type (gdbarch, 16, 0, "short");
 286   builtin_d_type->builtin_ushort
 287     = arch_integer_type (gdbarch, 16, 1, "ushort");
 288   builtin_d_type->builtin_int
 289     = arch_integer_type (gdbarch, 32, 0, "int");
 290   builtin_d_type->builtin_uint
 291     = arch_integer_type (gdbarch, 32, 1, "uint");
 292   builtin_d_type->builtin_long
 293     = arch_integer_type (gdbarch, 64, 0, "long");
 294   builtin_d_type->builtin_ulong
 295     = arch_integer_type (gdbarch, 64, 1, "ulong");
 296   builtin_d_type->builtin_cent
 297     = arch_integer_type (gdbarch, 128, 0, "cent");
 298   builtin_d_type->builtin_ucent
 299     = arch_integer_type (gdbarch, 128, 1, "ucent");
 300   builtin_d_type->builtin_float
 301     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 302                        "float", gdbarch_float_format (gdbarch));
 303   builtin_d_type->builtin_double
 304     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 305                        "double", gdbarch_double_format (gdbarch));
 306   builtin_d_type->builtin_real
 307     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 308                        "real", gdbarch_long_double_format (gdbarch));
 309
 310   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 311     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 312   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 313     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 314
 315   /* Imaginary and complex types.  */
 316   builtin_d_type->builtin_ifloat
 317     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 318                        "ifloat", gdbarch_float_format (gdbarch));
 319   builtin_d_type->builtin_idouble
 320     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 321                        "idouble", gdbarch_double_format (gdbarch));
 322   builtin_d_type->builtin_ireal
 323     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 324                        "ireal", gdbarch_long_double_format (gdbarch));
 325   builtin_d_type->builtin_cfloat
 326     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 327   builtin_d_type->builtin_cdouble
 328     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 329   builtin_d_type->builtin_creal
 330     = init_complex_type ("creal", builtin_d_type->builtin_real);
 331
 332   /* Character types.  */
 333   builtin_d_type->builtin_char
 334     = arch_character_type (gdbarch, 8, 1, "char");
 335   builtin_d_type->builtin_wchar
 336     = arch_character_type (gdbarch, 16, 1, "wchar");
 337   builtin_d_type->builtin_dchar
 338     = arch_character_type (gdbarch, 32, 1, "dchar");
 339
 340   return builtin_d_type;
 341 }
 342
 343 static struct gdbarch_data *d_type_data;
 344
 345 /* Return the D type table for the specified architecture.  */
 346
 347 const struct builtin_d_type *
 348 builtin_d_type (struct gdbarch *gdbarch)
 349 {
 350   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 351 }
 352
 353 void _initialize_d_language ();
 354 void
 355 _initialize_d_language ()
 356 {
 357   d_type_data = gdbarch_data_register_post_init (build_d_types);
 358 }