gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2016 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
  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   return gdb_demangle (symbol, options | DMGL_DLANG);
  56 }
  57
  58 /* Table mapping opcodes into strings for printing operators
  59    and precedences of the operators.  */
  60 static const struct op_print d_op_print_tab[] =
  61 {
  62   {",", BINOP_COMMA, PREC_COMMA, 0},
  63   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  64   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  65   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  66   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  67   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  68   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  69   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  70   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  71   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  72   {">=", BINOP_GEQ, PREC_ORDER, 0},
  73   {">", BINOP_GTR, PREC_ORDER, 0},
  74   {"<", BINOP_LESS, PREC_ORDER, 0},
  75   {">>", BINOP_RSH, PREC_SHIFT, 0},
  76   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  77   {"+", BINOP_ADD, PREC_ADD, 0},
  78   {"-", BINOP_SUB, PREC_ADD, 0},
  79   {"~", BINOP_CONCAT, PREC_ADD, 0},
  80   {"*", BINOP_MUL, PREC_MUL, 0},
  81   {"/", BINOP_DIV, PREC_MUL, 0},
  82   {"%", BINOP_REM, PREC_MUL, 0},
  83   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  84   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  85   {"-", UNOP_NEG, PREC_PREFIX, 0},
  86   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  87   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  88   {"*", UNOP_IND, PREC_PREFIX, 0},
  89   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  90   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
  91   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
  92   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
  93   {NULL, OP_NULL, PREC_PREFIX, 0}
  94 };
  95
  96 /* Mapping of all D basic data types into the language vector.  */
  97
  98 enum d_primitive_types {
  99   d_primitive_type_void,
 100   d_primitive_type_bool,
 101   d_primitive_type_byte,
 102   d_primitive_type_ubyte,
 103   d_primitive_type_short,
 104   d_primitive_type_ushort,
 105   d_primitive_type_int,
 106   d_primitive_type_uint,
 107   d_primitive_type_long,
 108   d_primitive_type_ulong,
 109   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 110   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 111   d_primitive_type_float,
 112   d_primitive_type_double,
 113   d_primitive_type_real,
 114   d_primitive_type_ifloat,  /* Imaginary float types.  */
 115   d_primitive_type_idouble,
 116   d_primitive_type_ireal,
 117   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 118   d_primitive_type_cdouble,
 119   d_primitive_type_creal,
 120   d_primitive_type_char,    /* Unsigned character types.  */
 121   d_primitive_type_wchar,
 122   d_primitive_type_dchar,
 123   nr_d_primitive_types
 124 };
 125
 126 /* Implements the la_language_arch_info language_defn routine
 127    for language D.  */
 128
 129 static void
 130 d_language_arch_info (struct gdbarch *gdbarch,
 131                       struct language_arch_info *lai)
 132 {
 133   const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 134
 135   lai->string_char_type = builtin->builtin_char;
 136   lai->primitive_type_vector
 137     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 138                               struct type *);
 139
 140   lai->primitive_type_vector [d_primitive_type_void]
 141     = builtin->builtin_void;
 142   lai->primitive_type_vector [d_primitive_type_bool]
 143     = builtin->builtin_bool;
 144   lai->primitive_type_vector [d_primitive_type_byte]
 145     = builtin->builtin_byte;
 146   lai->primitive_type_vector [d_primitive_type_ubyte]
 147     = builtin->builtin_ubyte;
 148   lai->primitive_type_vector [d_primitive_type_short]
 149     = builtin->builtin_short;
 150   lai->primitive_type_vector [d_primitive_type_ushort]
 151     = builtin->builtin_ushort;
 152   lai->primitive_type_vector [d_primitive_type_int]
 153     = builtin->builtin_int;
 154   lai->primitive_type_vector [d_primitive_type_uint]
 155     = builtin->builtin_uint;
 156   lai->primitive_type_vector [d_primitive_type_long]
 157     = builtin->builtin_long;
 158   lai->primitive_type_vector [d_primitive_type_ulong]
 159     = builtin->builtin_ulong;
 160   lai->primitive_type_vector [d_primitive_type_cent]
 161     = builtin->builtin_cent;
 162   lai->primitive_type_vector [d_primitive_type_ucent]
 163     = builtin->builtin_ucent;
 164   lai->primitive_type_vector [d_primitive_type_float]
 165     = builtin->builtin_float;
 166   lai->primitive_type_vector [d_primitive_type_double]
 167     = builtin->builtin_double;
 168   lai->primitive_type_vector [d_primitive_type_real]
 169     = builtin->builtin_real;
 170   lai->primitive_type_vector [d_primitive_type_ifloat]
 171     = builtin->builtin_ifloat;
 172   lai->primitive_type_vector [d_primitive_type_idouble]
 173     = builtin->builtin_idouble;
 174   lai->primitive_type_vector [d_primitive_type_ireal]
 175     = builtin->builtin_ireal;
 176   lai->primitive_type_vector [d_primitive_type_cfloat]
 177     = builtin->builtin_cfloat;
 178   lai->primitive_type_vector [d_primitive_type_cdouble]
 179     = builtin->builtin_cdouble;
 180   lai->primitive_type_vector [d_primitive_type_creal]
 181     = builtin->builtin_creal;
 182   lai->primitive_type_vector [d_primitive_type_char]
 183     = builtin->builtin_char;
 184   lai->primitive_type_vector [d_primitive_type_wchar]
 185     = builtin->builtin_wchar;
 186   lai->primitive_type_vector [d_primitive_type_dchar]
 187     = builtin->builtin_dchar;
 188
 189   lai->bool_type_symbol = "bool";
 190   lai->bool_type_default = builtin->builtin_bool;
 191 }
 192
 193 static const char *d_extensions[] =
 194 {
 195   ".d", NULL
 196 };
 197
 198 static const struct language_defn d_language_defn =
 199 {
 200   "d",
 201   "D",
 202   language_d,
 203   range_check_off,
 204   case_sensitive_on,
 205   array_row_major,
 206   macro_expansion_no,
 207   d_extensions,
 208   &exp_descriptor_c,
 209   d_parse,
 210   d_yyerror,
 211   null_post_parser,
 212   c_printchar,                  /* Print a character constant.  */
 213   c_printstr,                   /* Function to print string constant.  */
 214   c_emit_char,                  /* Print a single char.  */
 215   c_print_type,                 /* Print a type using appropriate syntax.  */
 216   c_print_typedef,              /* Print a typedef using appropriate
 217                                    syntax.  */
 218   d_val_print,                  /* Print a value using appropriate syntax.  */
 219   c_value_print,                /* Print a top-level value.  */
 220   default_read_var_value,       /* la_read_var_value */
 221   NULL,                         /* Language specific skip_trampoline.  */
 222   "this",
 223   d_lookup_symbol_nonlocal,
 224   basic_lookup_transparent_type,
 225   d_demangle,                   /* Language specific symbol demangler.  */
 226   NULL,                         /* Language specific
 227                                    class_name_from_physname.  */
 228   d_op_print_tab,               /* Expression operators for printing.  */
 229   1,                            /* C-style arrays.  */
 230   0,                            /* String lower bound.  */
 231   default_word_break_characters,
 232   default_make_symbol_completion_list,
 233   d_language_arch_info,
 234   default_print_array_index,
 235   default_pass_by_reference,
 236   c_get_string,
 237   NULL,                         /* la_get_symbol_name_cmp */
 238   iterate_over_symbols,
 239   &default_varobj_ops,
 240   NULL,
 241   NULL,
 242   LANG_MAGIC
 243 };
 244
 245 /* Build all D language types for the specified architecture.  */
 246
 247 static void *
 248 build_d_types (struct gdbarch *gdbarch)
 249 {
 250   struct builtin_d_type *builtin_d_type
 251     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 252
 253   /* Basic types.  */
 254   builtin_d_type->builtin_void
 255     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
 256   builtin_d_type->builtin_bool
 257     = arch_boolean_type (gdbarch, 8, 1, "bool");
 258   builtin_d_type->builtin_byte
 259     = arch_integer_type (gdbarch, 8, 0, "byte");
 260   builtin_d_type->builtin_ubyte
 261     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 262   builtin_d_type->builtin_short
 263     = arch_integer_type (gdbarch, 16, 0, "short");
 264   builtin_d_type->builtin_ushort
 265     = arch_integer_type (gdbarch, 16, 1, "ushort");
 266   builtin_d_type->builtin_int
 267     = arch_integer_type (gdbarch, 32, 0, "int");
 268   builtin_d_type->builtin_uint
 269     = arch_integer_type (gdbarch, 32, 1, "uint");
 270   builtin_d_type->builtin_long
 271     = arch_integer_type (gdbarch, 64, 0, "long");
 272   builtin_d_type->builtin_ulong
 273     = arch_integer_type (gdbarch, 64, 1, "ulong");
 274   builtin_d_type->builtin_cent
 275     = arch_integer_type (gdbarch, 128, 0, "cent");
 276   builtin_d_type->builtin_ucent
 277     = arch_integer_type (gdbarch, 128, 1, "ucent");
 278   builtin_d_type->builtin_float
 279     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 280                        "float", NULL);
 281   builtin_d_type->builtin_double
 282     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 283                        "double", NULL);
 284   builtin_d_type->builtin_real
 285     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 286                        "real", NULL);
 287
 288   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 289     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 290   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 291     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 292
 293   /* Imaginary and complex types.  */
 294   builtin_d_type->builtin_ifloat
 295     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 296                        "ifloat", NULL);
 297   builtin_d_type->builtin_idouble
 298     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 299                        "idouble", NULL);
 300   builtin_d_type->builtin_ireal
 301     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 302                        "ireal", NULL);
 303   builtin_d_type->builtin_cfloat
 304     = arch_complex_type (gdbarch, "cfloat",
 305                          builtin_d_type->builtin_float);
 306   builtin_d_type->builtin_cdouble
 307     = arch_complex_type (gdbarch, "cdouble",
 308                          builtin_d_type->builtin_double);
 309   builtin_d_type->builtin_creal
 310     = arch_complex_type (gdbarch, "creal",
 311                          builtin_d_type->builtin_real);
 312
 313   /* Character types.  */
 314   builtin_d_type->builtin_char
 315     = arch_character_type (gdbarch, 8, 1, "char");
 316   builtin_d_type->builtin_wchar
 317     = arch_character_type (gdbarch, 16, 1, "wchar");
 318   builtin_d_type->builtin_dchar
 319     = arch_character_type (gdbarch, 32, 1, "dchar");
 320
 321   return builtin_d_type;
 322 }
 323
 324 static struct gdbarch_data *d_type_data;
 325
 326 /* Return the D type table for the specified architecture.  */
 327
 328 const struct builtin_d_type *
 329 builtin_d_type (struct gdbarch *gdbarch)
 330 {
 331   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 332 }
 333
 334 /* Provide a prototype to silence -Wmissing-prototypes.  */
 335 extern initialize_file_ftype _initialize_d_language;
 336
 337 void
 338 _initialize_d_language (void)
 339 {
 340   d_type_data = gdbarch_data_register_post_init (build_d_types);
 341
 342   add_language (&d_language_defn);
 343 }