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   d_demangle,                   /* Language specific symbol demangler.  */
 169   d_sniff_from_mangled_name,
 170   NULL,                         /* Language specific
 171                                    class_name_from_physname.  */
 172   d_op_print_tab,               /* Expression operators for printing.  */
 173   1,                            /* C-style arrays.  */
 174   0,                            /* String lower bound.  */
 175   default_word_break_characters,
 176   default_collect_symbol_completion_matches,
 177   c_watch_location_expression,
 178   NULL,                         /* la_get_symbol_name_matcher */
 179   iterate_over_symbols,
 180   default_search_name_hash,
 181   &default_varobj_ops,
 182   NULL,
 183   NULL,
 184   c_is_string_type_p,
 185   "{...}"                       /* la_struct_too_deep_ellipsis */
 186 };
 187
 188 /* Class representing the D language.  */
 189
 190 class d_language : public language_defn
 191 {
 192 public:
 193   d_language ()
 194     : language_defn (language_d, d_language_data)
 195   { /* Nothing.  */ }
 196
 197   /* See language.h.  */
 198   void language_arch_info (struct gdbarch *gdbarch,
 199                            struct language_arch_info *lai) const override
 200   {
 201     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 202
 203     lai->string_char_type = builtin->builtin_char;
 204     lai->primitive_type_vector
 205       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 206                                 struct type *);
 207
 208     lai->primitive_type_vector [d_primitive_type_void]
 209       = builtin->builtin_void;
 210     lai->primitive_type_vector [d_primitive_type_bool]
 211       = builtin->builtin_bool;
 212     lai->primitive_type_vector [d_primitive_type_byte]
 213       = builtin->builtin_byte;
 214     lai->primitive_type_vector [d_primitive_type_ubyte]
 215       = builtin->builtin_ubyte;
 216     lai->primitive_type_vector [d_primitive_type_short]
 217       = builtin->builtin_short;
 218     lai->primitive_type_vector [d_primitive_type_ushort]
 219       = builtin->builtin_ushort;
 220     lai->primitive_type_vector [d_primitive_type_int]
 221       = builtin->builtin_int;
 222     lai->primitive_type_vector [d_primitive_type_uint]
 223       = builtin->builtin_uint;
 224     lai->primitive_type_vector [d_primitive_type_long]
 225       = builtin->builtin_long;
 226     lai->primitive_type_vector [d_primitive_type_ulong]
 227       = builtin->builtin_ulong;
 228     lai->primitive_type_vector [d_primitive_type_cent]
 229       = builtin->builtin_cent;
 230     lai->primitive_type_vector [d_primitive_type_ucent]
 231       = builtin->builtin_ucent;
 232     lai->primitive_type_vector [d_primitive_type_float]
 233       = builtin->builtin_float;
 234     lai->primitive_type_vector [d_primitive_type_double]
 235       = builtin->builtin_double;
 236     lai->primitive_type_vector [d_primitive_type_real]
 237       = builtin->builtin_real;
 238     lai->primitive_type_vector [d_primitive_type_ifloat]
 239       = builtin->builtin_ifloat;
 240     lai->primitive_type_vector [d_primitive_type_idouble]
 241       = builtin->builtin_idouble;
 242     lai->primitive_type_vector [d_primitive_type_ireal]
 243       = builtin->builtin_ireal;
 244     lai->primitive_type_vector [d_primitive_type_cfloat]
 245       = builtin->builtin_cfloat;
 246     lai->primitive_type_vector [d_primitive_type_cdouble]
 247       = builtin->builtin_cdouble;
 248     lai->primitive_type_vector [d_primitive_type_creal]
 249       = builtin->builtin_creal;
 250     lai->primitive_type_vector [d_primitive_type_char]
 251       = builtin->builtin_char;
 252     lai->primitive_type_vector [d_primitive_type_wchar]
 253       = builtin->builtin_wchar;
 254     lai->primitive_type_vector [d_primitive_type_dchar]
 255       = builtin->builtin_dchar;
 256
 257     lai->bool_type_symbol = "bool";
 258     lai->bool_type_default = builtin->builtin_bool;
 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 }