gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2014 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 "parser-defs.h"
  27 #include "gdb_obstack.h"
  28
  29 /* The name of the symbol to use to get the name of the main subprogram.  */
  30 static const char D_MAIN[] = "D main";
  31
  32 /* Function returning the special symbol name used by D for the main
  33    procedure in the main program if it is found in minimal symbol list.
  34    This function tries to find minimal symbols so that it finds them even
  35    if the program was compiled without debugging information.  */
  36
  37 const char *
  38 d_main_name (void)
  39 {
  40   struct bound_minimal_symbol msym;
  41
  42   msym = lookup_minimal_symbol (D_MAIN, NULL, NULL);
  43   if (msym.minsym != NULL)
  44     return D_MAIN;
  45
  46   /* No known entry procedure found, the main program is probably not D.  */
  47   return NULL;
  48 }
  49
  50 /* Implements the la_demangle language_defn routine for language D.  */
  51
  52 char *
  53 d_demangle (const char *symbol, int options)
  54 {
  55   struct obstack tempbuf;
  56   char *result;
  57
  58   if ((symbol == NULL) || (*symbol == '\0'))
  59     return NULL;
  60   else if (strcmp (symbol, "_Dmain") == 0)
  61     return xstrdup ("D main");
  62
  63   obstack_init (&tempbuf);
  64
  65   if (strncmp (symbol, "_D", 2) == 0)
  66     symbol += 2;
  67   else
  68     {
  69       obstack_free (&tempbuf, NULL);
  70       return NULL;
  71     }
  72
  73   if (d_parse_symbol (&tempbuf, symbol) != NULL)
  74     {
  75       obstack_grow_str0 (&tempbuf, "");
  76       result = xstrdup (obstack_finish (&tempbuf));
  77       obstack_free (&tempbuf, NULL);
  78     }
  79   else
  80     {
  81       obstack_free (&tempbuf, NULL);
  82       return NULL;
  83     }
  84
  85   return result;
  86 }
  87
  88 /* Table mapping opcodes into strings for printing operators
  89    and precedences of the operators.  */
  90 static const struct op_print d_op_print_tab[] =
  91 {
  92   {",", BINOP_COMMA, PREC_COMMA, 0},
  93   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  94   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  95   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  96   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  97   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  98   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  99   {"==", BINOP_EQUAL, PREC_ORDER, 0},
 100   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
 101   {"<=", BINOP_LEQ, PREC_ORDER, 0},
 102   {">=", BINOP_GEQ, PREC_ORDER, 0},
 103   {">", BINOP_GTR, PREC_ORDER, 0},
 104   {"<", BINOP_LESS, PREC_ORDER, 0},
 105   {">>", BINOP_RSH, PREC_SHIFT, 0},
 106   {"<<", BINOP_LSH, PREC_SHIFT, 0},
 107   {"+", BINOP_ADD, PREC_ADD, 0},
 108   {"-", BINOP_SUB, PREC_ADD, 0},
 109   {"~", BINOP_CONCAT, PREC_ADD, 0},
 110   {"*", BINOP_MUL, PREC_MUL, 0},
 111   {"/", BINOP_DIV, PREC_MUL, 0},
 112   {"%", BINOP_REM, PREC_MUL, 0},
 113   {"^^", BINOP_EXP, PREC_REPEAT, 0},
 114   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 115   {"-", UNOP_NEG, PREC_PREFIX, 0},
 116   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 117   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
 118   {"*", UNOP_IND, PREC_PREFIX, 0},
 119   {"&", UNOP_ADDR, PREC_PREFIX, 0},
 120   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 121   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 122   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 123   {NULL, 0, 0, 0}
 124 };
 125
 126 /* Mapping of all D basic data types into the language vector.  */
 127
 128 enum d_primitive_types {
 129   d_primitive_type_void,
 130   d_primitive_type_bool,
 131   d_primitive_type_byte,
 132   d_primitive_type_ubyte,
 133   d_primitive_type_short,
 134   d_primitive_type_ushort,
 135   d_primitive_type_int,
 136   d_primitive_type_uint,
 137   d_primitive_type_long,
 138   d_primitive_type_ulong,
 139   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 140   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 141   d_primitive_type_float,
 142   d_primitive_type_double,
 143   d_primitive_type_real,
 144   d_primitive_type_ifloat,  /* Imaginary float types.  */
 145   d_primitive_type_idouble,
 146   d_primitive_type_ireal,
 147   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 148   d_primitive_type_cdouble,
 149   d_primitive_type_creal,
 150   d_primitive_type_char,    /* Unsigned character types.  */
 151   d_primitive_type_wchar,
 152   d_primitive_type_dchar,
 153   nr_d_primitive_types
 154 };
 155
 156 /* Implements the la_language_arch_info language_defn routine
 157    for language D.  */
 158
 159 static void
 160 d_language_arch_info (struct gdbarch *gdbarch,
 161                       struct language_arch_info *lai)
 162 {
 163   const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 164
 165   lai->string_char_type = builtin->builtin_char;
 166   lai->primitive_type_vector
 167     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 168                               struct type *);
 169
 170   lai->primitive_type_vector [d_primitive_type_void]
 171     = builtin->builtin_void;
 172   lai->primitive_type_vector [d_primitive_type_bool]
 173     = builtin->builtin_bool;
 174   lai->primitive_type_vector [d_primitive_type_byte]
 175     = builtin->builtin_byte;
 176   lai->primitive_type_vector [d_primitive_type_ubyte]
 177     = builtin->builtin_ubyte;
 178   lai->primitive_type_vector [d_primitive_type_short]
 179     = builtin->builtin_short;
 180   lai->primitive_type_vector [d_primitive_type_ushort]
 181     = builtin->builtin_ushort;
 182   lai->primitive_type_vector [d_primitive_type_int]
 183     = builtin->builtin_int;
 184   lai->primitive_type_vector [d_primitive_type_uint]
 185     = builtin->builtin_uint;
 186   lai->primitive_type_vector [d_primitive_type_long]
 187     = builtin->builtin_long;
 188   lai->primitive_type_vector [d_primitive_type_ulong]
 189     = builtin->builtin_ulong;
 190   lai->primitive_type_vector [d_primitive_type_cent]
 191     = builtin->builtin_cent;
 192   lai->primitive_type_vector [d_primitive_type_ucent]
 193     = builtin->builtin_ucent;
 194   lai->primitive_type_vector [d_primitive_type_float]
 195     = builtin->builtin_float;
 196   lai->primitive_type_vector [d_primitive_type_double]
 197     = builtin->builtin_double;
 198   lai->primitive_type_vector [d_primitive_type_real]
 199     = builtin->builtin_real;
 200   lai->primitive_type_vector [d_primitive_type_ifloat]
 201     = builtin->builtin_ifloat;
 202   lai->primitive_type_vector [d_primitive_type_idouble]
 203     = builtin->builtin_idouble;
 204   lai->primitive_type_vector [d_primitive_type_ireal]
 205     = builtin->builtin_ireal;
 206   lai->primitive_type_vector [d_primitive_type_cfloat]
 207     = builtin->builtin_cfloat;
 208   lai->primitive_type_vector [d_primitive_type_cdouble]
 209     = builtin->builtin_cdouble;
 210   lai->primitive_type_vector [d_primitive_type_creal]
 211     = builtin->builtin_creal;
 212   lai->primitive_type_vector [d_primitive_type_char]
 213     = builtin->builtin_char;
 214   lai->primitive_type_vector [d_primitive_type_wchar]
 215     = builtin->builtin_wchar;
 216   lai->primitive_type_vector [d_primitive_type_dchar]
 217     = builtin->builtin_dchar;
 218
 219   lai->bool_type_symbol = "bool";
 220   lai->bool_type_default = builtin->builtin_bool;
 221 }
 222
 223 static const struct language_defn d_language_defn =
 224 {
 225   "d",
 226   "D",
 227   language_d,
 228   range_check_off,
 229   case_sensitive_on,
 230   array_row_major,
 231   macro_expansion_no,
 232   &exp_descriptor_c,
 233   d_parse,
 234   d_error,
 235   null_post_parser,
 236   c_printchar,                  /* Print a character constant.  */
 237   c_printstr,                   /* Function to print string constant.  */
 238   c_emit_char,                  /* Print a single char.  */
 239   c_print_type,                 /* Print a type using appropriate syntax.  */
 240   c_print_typedef,              /* Print a typedef using appropriate
 241                                    syntax.  */
 242   d_val_print,                  /* Print a value using appropriate syntax.  */
 243   c_value_print,                /* Print a top-level value.  */
 244   default_read_var_value,       /* la_read_var_value */
 245   NULL,                         /* Language specific skip_trampoline.  */
 246   "this",
 247   basic_lookup_symbol_nonlocal,
 248   basic_lookup_transparent_type,
 249   d_demangle,                   /* Language specific symbol demangler.  */
 250   NULL,                         /* Language specific
 251                                    class_name_from_physname.  */
 252   d_op_print_tab,               /* Expression operators for printing.  */
 253   1,                            /* C-style arrays.  */
 254   0,                            /* String lower bound.  */
 255   default_word_break_characters,
 256   default_make_symbol_completion_list,
 257   d_language_arch_info,
 258   default_print_array_index,
 259   default_pass_by_reference,
 260   c_get_string,
 261   NULL,                         /* la_get_symbol_name_cmp */
 262   iterate_over_symbols,
 263   &default_varobj_ops,
 264   LANG_MAGIC
 265 };
 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, 1, "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", NULL);
 303   builtin_d_type->builtin_double
 304     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 305                        "double", NULL);
 306   builtin_d_type->builtin_real
 307     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 308                        "real", NULL);
 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", NULL);
 319   builtin_d_type->builtin_idouble
 320     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 321                        "idouble", NULL);
 322   builtin_d_type->builtin_ireal
 323     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 324                        "ireal", NULL);
 325   builtin_d_type->builtin_cfloat
 326     = arch_complex_type (gdbarch, "cfloat",
 327                          builtin_d_type->builtin_float);
 328   builtin_d_type->builtin_cdouble
 329     = arch_complex_type (gdbarch, "cdouble",
 330                          builtin_d_type->builtin_double);
 331   builtin_d_type->builtin_creal
 332     = arch_complex_type (gdbarch, "creal",
 333                          builtin_d_type->builtin_real);
 334
 335   /* Character types.  */
 336   builtin_d_type->builtin_char
 337     = arch_character_type (gdbarch, 8, 1, "char");
 338   builtin_d_type->builtin_wchar
 339     = arch_character_type (gdbarch, 16, 1, "wchar");
 340   builtin_d_type->builtin_dchar
 341     = arch_character_type (gdbarch, 32, 1, "dchar");
 342
 343   return builtin_d_type;
 344 }
 345
 346 static struct gdbarch_data *d_type_data;
 347
 348 /* Return the D type table for the specified architecture.  */
 349
 350 const struct builtin_d_type *
 351 builtin_d_type (struct gdbarch *gdbarch)
 352 {
 353   return gdbarch_data (gdbarch, d_type_data);
 354 }
 355
 356 /* Provide a prototype to silence -Wmissing-prototypes.  */
 357 extern initialize_file_ftype _initialize_d_language;
 358
 359 void
 360 _initialize_d_language (void)
 361 {
 362   d_type_data = gdbarch_data_register_post_init (build_d_types);
 363
 364   add_language (&d_language_defn);
 365 }