gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2024 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 "symtab.h"
  21 #include "language.h"
  22 #include "varobj.h"
  23 #include "d-lang.h"
  24 #include "c-lang.h"
  25 #include "demangle.h"
  26 #include "cp-support.h"
  27 #include "gdbarch.h"
  28 #include "parser-defs.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 gdb::unique_xmalloc_ptr<char>
  54 d_demangle (const char *symbol, int options)
  55 {
  56   return gdb_demangle (symbol, options | DMGL_DLANG);
  57 }
  58
  59 /* Class representing the D language.  */
  60
  61 class d_language : public language_defn
  62 {
  63 public:
  64   d_language ()
  65     : language_defn (language_d)
  66   { /* Nothing.  */ }
  67
  68   /* See language.h.  */
  69
  70   const char *name () const override
  71   { return "d"; }
  72
  73   /* See language.h.  */
  74
  75   const char *natural_name () const override
  76   { return "D"; }
  77
  78   /* See language.h.  */
  79
  80   const std::vector<const char *> &filename_extensions () const override
  81   {
  82     static const std::vector<const char *> extensions = { ".d" };
  83     return extensions;
  84   }
  85
  86   /* See language.h.  */
  87   void language_arch_info (struct gdbarch *gdbarch,
  88                            struct language_arch_info *lai) const override
  89   {
  90     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
  91
  92     /* Helper function to allow shorter lines below.  */
  93     auto add  = [&] (struct type * t)
  94     {
  95       lai->add_primitive_type (t);
  96     };
  97
  98     add (builtin->builtin_void);
  99     add (builtin->builtin_bool);
 100     add (builtin->builtin_byte);
 101     add (builtin->builtin_ubyte);
 102     add (builtin->builtin_short);
 103     add (builtin->builtin_ushort);
 104     add (builtin->builtin_int);
 105     add (builtin->builtin_uint);
 106     add (builtin->builtin_long);
 107     add (builtin->builtin_ulong);
 108     add (builtin->builtin_cent);
 109     add (builtin->builtin_ucent);
 110     add (builtin->builtin_float);
 111     add (builtin->builtin_double);
 112     add (builtin->builtin_real);
 113     add (builtin->builtin_ifloat);
 114     add (builtin->builtin_idouble);
 115     add (builtin->builtin_ireal);
 116     add (builtin->builtin_cfloat);
 117     add (builtin->builtin_cdouble);
 118     add (builtin->builtin_creal);
 119     add (builtin->builtin_char);
 120     add (builtin->builtin_wchar);
 121     add (builtin->builtin_dchar);
 122
 123     lai->set_string_char_type (builtin->builtin_char);
 124     lai->set_bool_type (builtin->builtin_bool, "bool");
 125   }
 126
 127   /* See language.h.  */
 128   bool sniff_from_mangled_name
 129        (const char *mangled,
 130         gdb::unique_xmalloc_ptr<char> *demangled) const override
 131   {
 132     *demangled = d_demangle (mangled, 0);
 133     return *demangled != NULL;
 134   }
 135
 136   /* See language.h.  */
 137
 138   gdb::unique_xmalloc_ptr<char> demangle_symbol (const char *mangled,
 139                                                  int options) const override
 140   {
 141     return d_demangle (mangled, options);
 142   }
 143
 144   /* See language.h.  */
 145
 146   bool can_print_type_offsets () const override
 147   {
 148     return true;
 149   }
 150
 151   /* See language.h.  */
 152
 153   void print_type (struct type *type, const char *varstring,
 154                    struct ui_file *stream, int show, int level,
 155                    const struct type_print_options *flags) const override
 156   {
 157     c_print_type (type, varstring, stream, show, level, la_language, flags);
 158   }
 159
 160   /* See language.h.  */
 161
 162   void value_print_inner
 163         (struct value *val, struct ui_file *stream, int recurse,
 164          const struct value_print_options *options) const override
 165   {
 166     return d_value_print_inner (val, stream, recurse, options);
 167   }
 168
 169   /* See language.h.  */
 170
 171   struct block_symbol lookup_symbol_nonlocal
 172         (const char *name, const struct block *block,
 173          const domain_search_flags domain) const override
 174   {
 175     return d_lookup_symbol_nonlocal (this, name, block, domain);
 176   }
 177
 178   /* See language.h.  */
 179
 180   int parser (struct parser_state *ps) const override
 181   {
 182     return d_parse (ps);
 183   }
 184
 185   /* See language.h.  */
 186
 187   const char *name_of_this () const override
 188   { return "this"; }
 189 };
 190
 191 /* Single instance of the D language class.  */
 192
 193 static d_language d_language_defn;
 194
 195 /* Build all D language types for the specified architecture.  */
 196
 197 static struct builtin_d_type *
 198 build_d_types (struct gdbarch *gdbarch)
 199 {
 200   struct builtin_d_type *builtin_d_type = new struct builtin_d_type;
 201
 202   /* Basic types.  */
 203   type_allocator alloc (gdbarch);
 204   builtin_d_type->builtin_void = builtin_type (gdbarch)->builtin_void;
 205   builtin_d_type->builtin_bool
 206     = init_boolean_type (alloc, 8, 1, "bool");
 207   builtin_d_type->builtin_byte
 208     = init_integer_type (alloc, 8, 0, "byte");
 209   builtin_d_type->builtin_ubyte
 210     = init_integer_type (alloc, 8, 1, "ubyte");
 211   builtin_d_type->builtin_short
 212     = init_integer_type (alloc, 16, 0, "short");
 213   builtin_d_type->builtin_ushort
 214     = init_integer_type (alloc, 16, 1, "ushort");
 215   builtin_d_type->builtin_int
 216     = init_integer_type (alloc, 32, 0, "int");
 217   builtin_d_type->builtin_uint
 218     = init_integer_type (alloc, 32, 1, "uint");
 219   builtin_d_type->builtin_long
 220     = init_integer_type (alloc, 64, 0, "long");
 221   builtin_d_type->builtin_ulong
 222     = init_integer_type (alloc, 64, 1, "ulong");
 223   builtin_d_type->builtin_cent
 224     = init_integer_type (alloc, 128, 0, "cent");
 225   builtin_d_type->builtin_ucent
 226     = init_integer_type (alloc, 128, 1, "ucent");
 227   builtin_d_type->builtin_float
 228     = init_float_type (alloc, gdbarch_float_bit (gdbarch),
 229                        "float", gdbarch_float_format (gdbarch));
 230   builtin_d_type->builtin_double
 231     = init_float_type (alloc, gdbarch_double_bit (gdbarch),
 232                        "double", gdbarch_double_format (gdbarch));
 233   builtin_d_type->builtin_real
 234     = init_float_type (alloc, gdbarch_long_double_bit (gdbarch),
 235                        "real", gdbarch_long_double_format (gdbarch));
 236
 237   builtin_d_type->builtin_byte->set_instance_flags
 238     (builtin_d_type->builtin_byte->instance_flags ()
 239      | TYPE_INSTANCE_FLAG_NOTTEXT);
 240
 241   builtin_d_type->builtin_ubyte->set_instance_flags
 242     (builtin_d_type->builtin_ubyte->instance_flags ()
 243      | TYPE_INSTANCE_FLAG_NOTTEXT);
 244
 245   /* Imaginary and complex types.  */
 246   builtin_d_type->builtin_ifloat
 247     = init_float_type (alloc, gdbarch_float_bit (gdbarch),
 248                        "ifloat", gdbarch_float_format (gdbarch));
 249   builtin_d_type->builtin_idouble
 250     = init_float_type (alloc, gdbarch_double_bit (gdbarch),
 251                        "idouble", gdbarch_double_format (gdbarch));
 252   builtin_d_type->builtin_ireal
 253     = init_float_type (alloc, gdbarch_long_double_bit (gdbarch),
 254                        "ireal", gdbarch_long_double_format (gdbarch));
 255   builtin_d_type->builtin_cfloat
 256     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 257   builtin_d_type->builtin_cdouble
 258     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 259   builtin_d_type->builtin_creal
 260     = init_complex_type ("creal", builtin_d_type->builtin_real);
 261
 262   /* Character types.  */
 263   builtin_d_type->builtin_char
 264     = init_character_type (alloc, 8, 1, "char");
 265   builtin_d_type->builtin_wchar
 266     = init_character_type (alloc, 16, 1, "wchar");
 267   builtin_d_type->builtin_dchar
 268     = init_character_type (alloc, 32, 1, "dchar");
 269
 270   return builtin_d_type;
 271 }
 272
 273 static const registry<gdbarch>::key<struct builtin_d_type> d_type_data;
 274
 275 /* Return the D type table for the specified architecture.  */
 276
 277 const struct builtin_d_type *
 278 builtin_d_type (struct gdbarch *gdbarch)
 279 {
 280   struct builtin_d_type *result = d_type_data.get (gdbarch);
 281   if (result == nullptr)
 282     {
 283       result = build_d_types (gdbarch);
 284       d_type_data.set (gdbarch, result);
 285     }
 286
 287   return result;
 288 }