gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2019 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 /* la_sniff_from_mangled_name implementation for D.  */
  59
  60 static int
  61 d_sniff_from_mangled_name (const char *mangled, char **demangled)
  62 {
  63   *demangled = d_demangle (mangled, 0);
  64   return *demangled != NULL;
  65 }
  66
  67 /* Table mapping opcodes into strings for printing operators
  68    and precedences of the operators.  */
  69 static const struct op_print d_op_print_tab[] =
  70 {
  71   {",", BINOP_COMMA, PREC_COMMA, 0},
  72   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  73   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  74   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  75   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  76   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  77   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  78   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  79   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  80   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  81   {">=", BINOP_GEQ, PREC_ORDER, 0},
  82   {">", BINOP_GTR, PREC_ORDER, 0},
  83   {"<", BINOP_LESS, PREC_ORDER, 0},
  84   {">>", BINOP_RSH, PREC_SHIFT, 0},
  85   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  86   {"+", BINOP_ADD, PREC_ADD, 0},
  87   {"-", BINOP_SUB, PREC_ADD, 0},
  88   {"~", BINOP_CONCAT, PREC_ADD, 0},
  89   {"*", BINOP_MUL, PREC_MUL, 0},
  90   {"/", BINOP_DIV, PREC_MUL, 0},
  91   {"%", BINOP_REM, PREC_MUL, 0},
  92   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  93   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  94   {"-", UNOP_NEG, PREC_PREFIX, 0},
  95   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  96   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  97   {"*", UNOP_IND, PREC_PREFIX, 0},
  98   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  99   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 100   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 101   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 102   {NULL, OP_NULL, PREC_PREFIX, 0}
 103 };
 104
 105 /* Mapping of all D basic data types into the language vector.  */
 106
 107 enum d_primitive_types {
 108   d_primitive_type_void,
 109   d_primitive_type_bool,
 110   d_primitive_type_byte,
 111   d_primitive_type_ubyte,
 112   d_primitive_type_short,
 113   d_primitive_type_ushort,
 114   d_primitive_type_int,
 115   d_primitive_type_uint,
 116   d_primitive_type_long,
 117   d_primitive_type_ulong,
 118   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 119   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 120   d_primitive_type_float,
 121   d_primitive_type_double,
 122   d_primitive_type_real,
 123   d_primitive_type_ifloat,  /* Imaginary float types.  */
 124   d_primitive_type_idouble,
 125   d_primitive_type_ireal,
 126   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 127   d_primitive_type_cdouble,
 128   d_primitive_type_creal,
 129   d_primitive_type_char,    /* Unsigned character types.  */
 130   d_primitive_type_wchar,
 131   d_primitive_type_dchar,
 132   nr_d_primitive_types
 133 };
 134
 135 /* Implements the la_language_arch_info language_defn routine
 136    for language D.  */
 137
 138 static void
 139 d_language_arch_info (struct gdbarch *gdbarch,
 140                       struct language_arch_info *lai)
 141 {
 142   const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 143
 144   lai->string_char_type = builtin->builtin_char;
 145   lai->primitive_type_vector
 146     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 147                               struct type *);
 148
 149   lai->primitive_type_vector [d_primitive_type_void]
 150     = builtin->builtin_void;
 151   lai->primitive_type_vector [d_primitive_type_bool]
 152     = builtin->builtin_bool;
 153   lai->primitive_type_vector [d_primitive_type_byte]
 154     = builtin->builtin_byte;
 155   lai->primitive_type_vector [d_primitive_type_ubyte]
 156     = builtin->builtin_ubyte;
 157   lai->primitive_type_vector [d_primitive_type_short]
 158     = builtin->builtin_short;
 159   lai->primitive_type_vector [d_primitive_type_ushort]
 160     = builtin->builtin_ushort;
 161   lai->primitive_type_vector [d_primitive_type_int]
 162     = builtin->builtin_int;
 163   lai->primitive_type_vector [d_primitive_type_uint]
 164     = builtin->builtin_uint;
 165   lai->primitive_type_vector [d_primitive_type_long]
 166     = builtin->builtin_long;
 167   lai->primitive_type_vector [d_primitive_type_ulong]
 168     = builtin->builtin_ulong;
 169   lai->primitive_type_vector [d_primitive_type_cent]
 170     = builtin->builtin_cent;
 171   lai->primitive_type_vector [d_primitive_type_ucent]
 172     = builtin->builtin_ucent;
 173   lai->primitive_type_vector [d_primitive_type_float]
 174     = builtin->builtin_float;
 175   lai->primitive_type_vector [d_primitive_type_double]
 176     = builtin->builtin_double;
 177   lai->primitive_type_vector [d_primitive_type_real]
 178     = builtin->builtin_real;
 179   lai->primitive_type_vector [d_primitive_type_ifloat]
 180     = builtin->builtin_ifloat;
 181   lai->primitive_type_vector [d_primitive_type_idouble]
 182     = builtin->builtin_idouble;
 183   lai->primitive_type_vector [d_primitive_type_ireal]
 184     = builtin->builtin_ireal;
 185   lai->primitive_type_vector [d_primitive_type_cfloat]
 186     = builtin->builtin_cfloat;
 187   lai->primitive_type_vector [d_primitive_type_cdouble]
 188     = builtin->builtin_cdouble;
 189   lai->primitive_type_vector [d_primitive_type_creal]
 190     = builtin->builtin_creal;
 191   lai->primitive_type_vector [d_primitive_type_char]
 192     = builtin->builtin_char;
 193   lai->primitive_type_vector [d_primitive_type_wchar]
 194     = builtin->builtin_wchar;
 195   lai->primitive_type_vector [d_primitive_type_dchar]
 196     = builtin->builtin_dchar;
 197
 198   lai->bool_type_symbol = "bool";
 199   lai->bool_type_default = builtin->builtin_bool;
 200 }
 201
 202 static const char *d_extensions[] =
 203 {
 204   ".d", NULL
 205 };
 206
 207 extern const struct language_defn d_language_defn =
 208 {
 209   "d",
 210   "D",
 211   language_d,
 212   range_check_off,
 213   case_sensitive_on,
 214   array_row_major,
 215   macro_expansion_no,
 216   d_extensions,
 217   &exp_descriptor_c,
 218   d_parse,
 219   null_post_parser,
 220   c_printchar,                  /* Print a character constant.  */
 221   c_printstr,                   /* Function to print string constant.  */
 222   c_emit_char,                  /* Print a single char.  */
 223   c_print_type,                 /* Print a type using appropriate syntax.  */
 224   c_print_typedef,              /* Print a typedef using appropriate
 225                                    syntax.  */
 226   d_val_print,                  /* Print a value using appropriate syntax.  */
 227   c_value_print,                /* Print a top-level value.  */
 228   default_read_var_value,       /* la_read_var_value */
 229   NULL,                         /* Language specific skip_trampoline.  */
 230   "this",
 231   false,                        /* la_store_sym_names_in_linkage_form_p */
 232   d_lookup_symbol_nonlocal,
 233   basic_lookup_transparent_type,
 234   d_demangle,                   /* Language specific symbol demangler.  */
 235   d_sniff_from_mangled_name,
 236   NULL,                         /* Language specific
 237                                    class_name_from_physname.  */
 238   d_op_print_tab,               /* Expression operators for printing.  */
 239   1,                            /* C-style arrays.  */
 240   0,                            /* String lower bound.  */
 241   default_word_break_characters,
 242   default_collect_symbol_completion_matches,
 243   d_language_arch_info,
 244   default_print_array_index,
 245   default_pass_by_reference,
 246   c_get_string,
 247   c_watch_location_expression,
 248   NULL,                         /* la_get_symbol_name_matcher */
 249   iterate_over_symbols,
 250   default_search_name_hash,
 251   &default_varobj_ops,
 252   NULL,
 253   NULL,
 254   c_is_string_type_p,
 255   "{...}"                       /* la_struct_too_deep_ellipsis */
 256 };
 257
 258 /* Build all D language types for the specified architecture.  */
 259
 260 static void *
 261 build_d_types (struct gdbarch *gdbarch)
 262 {
 263   struct builtin_d_type *builtin_d_type
 264     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 265
 266   /* Basic types.  */
 267   builtin_d_type->builtin_void
 268     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 269   builtin_d_type->builtin_bool
 270     = arch_boolean_type (gdbarch, 8, 1, "bool");
 271   builtin_d_type->builtin_byte
 272     = arch_integer_type (gdbarch, 8, 0, "byte");
 273   builtin_d_type->builtin_ubyte
 274     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 275   builtin_d_type->builtin_short
 276     = arch_integer_type (gdbarch, 16, 0, "short");
 277   builtin_d_type->builtin_ushort
 278     = arch_integer_type (gdbarch, 16, 1, "ushort");
 279   builtin_d_type->builtin_int
 280     = arch_integer_type (gdbarch, 32, 0, "int");
 281   builtin_d_type->builtin_uint
 282     = arch_integer_type (gdbarch, 32, 1, "uint");
 283   builtin_d_type->builtin_long
 284     = arch_integer_type (gdbarch, 64, 0, "long");
 285   builtin_d_type->builtin_ulong
 286     = arch_integer_type (gdbarch, 64, 1, "ulong");
 287   builtin_d_type->builtin_cent
 288     = arch_integer_type (gdbarch, 128, 0, "cent");
 289   builtin_d_type->builtin_ucent
 290     = arch_integer_type (gdbarch, 128, 1, "ucent");
 291   builtin_d_type->builtin_float
 292     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 293                        "float", gdbarch_float_format (gdbarch));
 294   builtin_d_type->builtin_double
 295     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 296                        "double", gdbarch_double_format (gdbarch));
 297   builtin_d_type->builtin_real
 298     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 299                        "real", gdbarch_long_double_format (gdbarch));
 300
 301   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 302     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 303   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 304     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 305
 306   /* Imaginary and complex types.  */
 307   builtin_d_type->builtin_ifloat
 308     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 309                        "ifloat", gdbarch_float_format (gdbarch));
 310   builtin_d_type->builtin_idouble
 311     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 312                        "idouble", gdbarch_double_format (gdbarch));
 313   builtin_d_type->builtin_ireal
 314     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 315                        "ireal", gdbarch_long_double_format (gdbarch));
 316   builtin_d_type->builtin_cfloat
 317     = arch_complex_type (gdbarch, "cfloat",
 318                          builtin_d_type->builtin_float);
 319   builtin_d_type->builtin_cdouble
 320     = arch_complex_type (gdbarch, "cdouble",
 321                          builtin_d_type->builtin_double);
 322   builtin_d_type->builtin_creal
 323     = arch_complex_type (gdbarch, "creal",
 324                          builtin_d_type->builtin_real);
 325
 326   /* Character types.  */
 327   builtin_d_type->builtin_char
 328     = arch_character_type (gdbarch, 8, 1, "char");
 329   builtin_d_type->builtin_wchar
 330     = arch_character_type (gdbarch, 16, 1, "wchar");
 331   builtin_d_type->builtin_dchar
 332     = arch_character_type (gdbarch, 32, 1, "dchar");
 333
 334   return builtin_d_type;
 335 }
 336
 337 static struct gdbarch_data *d_type_data;
 338
 339 /* Return the D type table for the specified architecture.  */
 340
 341 const struct builtin_d_type *
 342 builtin_d_type (struct gdbarch *gdbarch)
 343 {
 344   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 345 }
 346
 347 void
 348 _initialize_d_language (void)
 349 {
 350   d_type_data = gdbarch_data_register_post_init (build_d_types);
 351 }