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 struct language_defn d_language_defn =
 194 {
 195   "d",
 196   "D",
 197   language_d,
 198   range_check_off,
 199   case_sensitive_on,
 200   array_row_major,
 201   macro_expansion_no,
 202   &exp_descriptor_c,
 203   d_parse,
 204   d_yyerror,
 205   null_post_parser,
 206   c_printchar,                  /* Print a character constant.  */
 207   c_printstr,                   /* Function to print string constant.  */
 208   c_emit_char,                  /* Print a single char.  */
 209   c_print_type,                 /* Print a type using appropriate syntax.  */
 210   c_print_typedef,              /* Print a typedef using appropriate
 211                                    syntax.  */
 212   d_val_print,                  /* Print a value using appropriate syntax.  */
 213   c_value_print,                /* Print a top-level value.  */
 214   default_read_var_value,       /* la_read_var_value */
 215   NULL,                         /* Language specific skip_trampoline.  */
 216   "this",
 217   d_lookup_symbol_nonlocal,
 218   basic_lookup_transparent_type,
 219   d_demangle,                   /* Language specific symbol demangler.  */
 220   NULL,                         /* Language specific
 221                                    class_name_from_physname.  */
 222   d_op_print_tab,               /* Expression operators for printing.  */
 223   1,                            /* C-style arrays.  */
 224   0,                            /* String lower bound.  */
 225   default_word_break_characters,
 226   default_make_symbol_completion_list,
 227   d_language_arch_info,
 228   default_print_array_index,
 229   default_pass_by_reference,
 230   c_get_string,
 231   NULL,                         /* la_get_symbol_name_cmp */
 232   iterate_over_symbols,
 233   &default_varobj_ops,
 234   NULL,
 235   NULL,
 236   LANG_MAGIC
 237 };
 238
 239 /* Build all D language types for the specified architecture.  */
 240
 241 static void *
 242 build_d_types (struct gdbarch *gdbarch)
 243 {
 244   struct builtin_d_type *builtin_d_type
 245     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 246
 247   /* Basic types.  */
 248   builtin_d_type->builtin_void
 249     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
 250   builtin_d_type->builtin_bool
 251     = arch_boolean_type (gdbarch, 8, 1, "bool");
 252   builtin_d_type->builtin_byte
 253     = arch_integer_type (gdbarch, 8, 0, "byte");
 254   builtin_d_type->builtin_ubyte
 255     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 256   builtin_d_type->builtin_short
 257     = arch_integer_type (gdbarch, 16, 0, "short");
 258   builtin_d_type->builtin_ushort
 259     = arch_integer_type (gdbarch, 16, 1, "ushort");
 260   builtin_d_type->builtin_int
 261     = arch_integer_type (gdbarch, 32, 0, "int");
 262   builtin_d_type->builtin_uint
 263     = arch_integer_type (gdbarch, 32, 1, "uint");
 264   builtin_d_type->builtin_long
 265     = arch_integer_type (gdbarch, 64, 0, "long");
 266   builtin_d_type->builtin_ulong
 267     = arch_integer_type (gdbarch, 64, 1, "ulong");
 268   builtin_d_type->builtin_cent
 269     = arch_integer_type (gdbarch, 128, 0, "cent");
 270   builtin_d_type->builtin_ucent
 271     = arch_integer_type (gdbarch, 128, 1, "ucent");
 272   builtin_d_type->builtin_float
 273     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 274                        "float", NULL);
 275   builtin_d_type->builtin_double
 276     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 277                        "double", NULL);
 278   builtin_d_type->builtin_real
 279     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 280                        "real", NULL);
 281
 282   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 283     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 284   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 285     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 286
 287   /* Imaginary and complex types.  */
 288   builtin_d_type->builtin_ifloat
 289     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 290                        "ifloat", NULL);
 291   builtin_d_type->builtin_idouble
 292     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 293                        "idouble", NULL);
 294   builtin_d_type->builtin_ireal
 295     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 296                        "ireal", NULL);
 297   builtin_d_type->builtin_cfloat
 298     = arch_complex_type (gdbarch, "cfloat",
 299                          builtin_d_type->builtin_float);
 300   builtin_d_type->builtin_cdouble
 301     = arch_complex_type (gdbarch, "cdouble",
 302                          builtin_d_type->builtin_double);
 303   builtin_d_type->builtin_creal
 304     = arch_complex_type (gdbarch, "creal",
 305                          builtin_d_type->builtin_real);
 306
 307   /* Character types.  */
 308   builtin_d_type->builtin_char
 309     = arch_character_type (gdbarch, 8, 1, "char");
 310   builtin_d_type->builtin_wchar
 311     = arch_character_type (gdbarch, 16, 1, "wchar");
 312   builtin_d_type->builtin_dchar
 313     = arch_character_type (gdbarch, 32, 1, "dchar");
 314
 315   return builtin_d_type;
 316 }
 317
 318 static struct gdbarch_data *d_type_data;
 319
 320 /* Return the D type table for the specified architecture.  */
 321
 322 const struct builtin_d_type *
 323 builtin_d_type (struct gdbarch *gdbarch)
 324 {
 325   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 326 }
 327
 328 /* Provide a prototype to silence -Wmissing-prototypes.  */
 329 extern initialize_file_ftype _initialize_d_language;
 330
 331 void
 332 _initialize_d_language (void)
 333 {
 334   d_type_data = gdbarch_data_register_post_init (build_d_types);
 335
 336   add_language (&d_language_defn);
 337 }