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 /* Table mapping opcodes into strings for printing operators
  60    and precedences of the operators.  */
  61 static const struct op_print d_op_print_tab[] =
  62 {
  63   {",", BINOP_COMMA, PREC_COMMA, 0},
  64   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  65   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  66   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  67   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  68   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  69   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  70   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  71   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  72   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  73   {">=", BINOP_GEQ, PREC_ORDER, 0},
  74   {">", BINOP_GTR, PREC_ORDER, 0},
  75   {"<", BINOP_LESS, PREC_ORDER, 0},
  76   {">>", BINOP_RSH, PREC_SHIFT, 0},
  77   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  78   {"+", BINOP_ADD, PREC_ADD, 0},
  79   {"-", BINOP_SUB, PREC_ADD, 0},
  80   {"~", BINOP_CONCAT, PREC_ADD, 0},
  81   {"*", BINOP_MUL, PREC_MUL, 0},
  82   {"/", BINOP_DIV, PREC_MUL, 0},
  83   {"%", BINOP_REM, PREC_MUL, 0},
  84   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  85   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  86   {"-", UNOP_NEG, PREC_PREFIX, 0},
  87   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  88   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  89   {"*", UNOP_IND, PREC_PREFIX, 0},
  90   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  91   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
  92   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
  93   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
  94   {NULL, OP_NULL, PREC_PREFIX, 0}
  95 };
  96
  97 /* Mapping of all D basic data types into the language vector.  */
  98
  99 enum d_primitive_types {
 100   d_primitive_type_void,
 101   d_primitive_type_bool,
 102   d_primitive_type_byte,
 103   d_primitive_type_ubyte,
 104   d_primitive_type_short,
 105   d_primitive_type_ushort,
 106   d_primitive_type_int,
 107   d_primitive_type_uint,
 108   d_primitive_type_long,
 109   d_primitive_type_ulong,
 110   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 111   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 112   d_primitive_type_float,
 113   d_primitive_type_double,
 114   d_primitive_type_real,
 115   d_primitive_type_ifloat,  /* Imaginary float types.  */
 116   d_primitive_type_idouble,
 117   d_primitive_type_ireal,
 118   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 119   d_primitive_type_cdouble,
 120   d_primitive_type_creal,
 121   d_primitive_type_char,    /* Unsigned character types.  */
 122   d_primitive_type_wchar,
 123   d_primitive_type_dchar,
 124   nr_d_primitive_types
 125 };
 126
 127 static const char *d_extensions[] =
 128 {
 129   ".d", NULL
 130 };
 131
 132 /* Constant data that describes the D language.  */
 133
 134 extern const struct language_data d_language_data =
 135 {
 136   "d",
 137   "D",
 138   language_d,
 139   range_check_off,
 140   case_sensitive_on,
 141   array_row_major,
 142   macro_expansion_no,
 143   d_extensions,
 144   &exp_descriptor_c,
 145   d_parse,
 146   null_post_parser,
 147   c_printchar,                  /* Print a character constant.  */
 148   c_printstr,                   /* Function to print string constant.  */
 149   c_emit_char,                  /* Print a single char.  */
 150   c_print_typedef,              /* Print a typedef using appropriate
 151                                    syntax.  */
 152   d_value_print_inner,          /* la_value_print_inner */
 153   c_value_print,                /* Print a top-level value.  */
 154   "this",
 155   false,                        /* la_store_sym_names_in_linkage_form_p */
 156   d_lookup_symbol_nonlocal,
 157   d_op_print_tab,               /* Expression operators for printing.  */
 158   1,                            /* C-style arrays.  */
 159   0,                            /* String lower bound.  */
 160   &default_varobj_ops,
 161   c_is_string_type_p,
 162   "{...}"                       /* la_struct_too_deep_ellipsis */
 163 };
 164
 165 /* Class representing the D language.  */
 166
 167 class d_language : public language_defn
 168 {
 169 public:
 170   d_language ()
 171     : language_defn (language_d, d_language_data)
 172   { /* Nothing.  */ }
 173
 174   /* See language.h.  */
 175   void language_arch_info (struct gdbarch *gdbarch,
 176                            struct language_arch_info *lai) const override
 177   {
 178     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 179
 180     lai->string_char_type = builtin->builtin_char;
 181     lai->primitive_type_vector
 182       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 183                                 struct type *);
 184
 185     lai->primitive_type_vector [d_primitive_type_void]
 186       = builtin->builtin_void;
 187     lai->primitive_type_vector [d_primitive_type_bool]
 188       = builtin->builtin_bool;
 189     lai->primitive_type_vector [d_primitive_type_byte]
 190       = builtin->builtin_byte;
 191     lai->primitive_type_vector [d_primitive_type_ubyte]
 192       = builtin->builtin_ubyte;
 193     lai->primitive_type_vector [d_primitive_type_short]
 194       = builtin->builtin_short;
 195     lai->primitive_type_vector [d_primitive_type_ushort]
 196       = builtin->builtin_ushort;
 197     lai->primitive_type_vector [d_primitive_type_int]
 198       = builtin->builtin_int;
 199     lai->primitive_type_vector [d_primitive_type_uint]
 200       = builtin->builtin_uint;
 201     lai->primitive_type_vector [d_primitive_type_long]
 202       = builtin->builtin_long;
 203     lai->primitive_type_vector [d_primitive_type_ulong]
 204       = builtin->builtin_ulong;
 205     lai->primitive_type_vector [d_primitive_type_cent]
 206       = builtin->builtin_cent;
 207     lai->primitive_type_vector [d_primitive_type_ucent]
 208       = builtin->builtin_ucent;
 209     lai->primitive_type_vector [d_primitive_type_float]
 210       = builtin->builtin_float;
 211     lai->primitive_type_vector [d_primitive_type_double]
 212       = builtin->builtin_double;
 213     lai->primitive_type_vector [d_primitive_type_real]
 214       = builtin->builtin_real;
 215     lai->primitive_type_vector [d_primitive_type_ifloat]
 216       = builtin->builtin_ifloat;
 217     lai->primitive_type_vector [d_primitive_type_idouble]
 218       = builtin->builtin_idouble;
 219     lai->primitive_type_vector [d_primitive_type_ireal]
 220       = builtin->builtin_ireal;
 221     lai->primitive_type_vector [d_primitive_type_cfloat]
 222       = builtin->builtin_cfloat;
 223     lai->primitive_type_vector [d_primitive_type_cdouble]
 224       = builtin->builtin_cdouble;
 225     lai->primitive_type_vector [d_primitive_type_creal]
 226       = builtin->builtin_creal;
 227     lai->primitive_type_vector [d_primitive_type_char]
 228       = builtin->builtin_char;
 229     lai->primitive_type_vector [d_primitive_type_wchar]
 230       = builtin->builtin_wchar;
 231     lai->primitive_type_vector [d_primitive_type_dchar]
 232       = builtin->builtin_dchar;
 233
 234     lai->bool_type_symbol = "bool";
 235     lai->bool_type_default = builtin->builtin_bool;
 236   }
 237
 238   /* See language.h.  */
 239   bool sniff_from_mangled_name (const char *mangled,
 240                                 char **demangled) const override
 241   {
 242     *demangled = d_demangle (mangled, 0);
 243     return *demangled != NULL;
 244   }
 245
 246   /* See language.h.  */
 247
 248   char *demangle (const char *mangled, int options) const override
 249   {
 250     return d_demangle (mangled, options);
 251   }
 252
 253   /* See language.h.  */
 254
 255   void print_type (struct type *type, const char *varstring,
 256                    struct ui_file *stream, int show, int level,
 257                    const struct type_print_options *flags) const override
 258   {
 259     c_print_type (type, varstring, stream, show, level, flags);
 260   }
 261 };
 262
 263 /* Single instance of the D language class.  */
 264
 265 static d_language d_language_defn;
 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, TARGET_CHAR_BIT, "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", gdbarch_float_format (gdbarch));
 303   builtin_d_type->builtin_double
 304     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 305                        "double", gdbarch_double_format (gdbarch));
 306   builtin_d_type->builtin_real
 307     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 308                        "real", gdbarch_long_double_format (gdbarch));
 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", gdbarch_float_format (gdbarch));
 319   builtin_d_type->builtin_idouble
 320     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 321                        "idouble", gdbarch_double_format (gdbarch));
 322   builtin_d_type->builtin_ireal
 323     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 324                        "ireal", gdbarch_long_double_format (gdbarch));
 325   builtin_d_type->builtin_cfloat
 326     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 327   builtin_d_type->builtin_cdouble
 328     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 329   builtin_d_type->builtin_creal
 330     = init_complex_type ("creal", builtin_d_type->builtin_real);
 331
 332   /* Character types.  */
 333   builtin_d_type->builtin_char
 334     = arch_character_type (gdbarch, 8, 1, "char");
 335   builtin_d_type->builtin_wchar
 336     = arch_character_type (gdbarch, 16, 1, "wchar");
 337   builtin_d_type->builtin_dchar
 338     = arch_character_type (gdbarch, 32, 1, "dchar");
 339
 340   return builtin_d_type;
 341 }
 342
 343 static struct gdbarch_data *d_type_data;
 344
 345 /* Return the D type table for the specified architecture.  */
 346
 347 const struct builtin_d_type *
 348 builtin_d_type (struct gdbarch *gdbarch)
 349 {
 350   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 351 }
 352
 353 void _initialize_d_language ();
 354 void
 355 _initialize_d_language ()
 356 {
 357   d_type_data = gdbarch_data_register_post_init (build_d_types);
 358 }