gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2023 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 #include "parser-defs.h"
  30
  31 /* The name of the symbol to use to get the name of the main subprogram.  */
  32 static const char D_MAIN[] = "D main";
  33
  34 /* Function returning the special symbol name used by D for the main
  35    procedure in the main program if it is found in minimal symbol list.
  36    This function tries to find minimal symbols so that it finds them even
  37    if the program was compiled without debugging information.  */
  38
  39 const char *
  40 d_main_name (void)
  41 {
  42   struct bound_minimal_symbol msym;
  43
  44   msym = lookup_minimal_symbol (D_MAIN, NULL, NULL);
  45   if (msym.minsym != NULL)
  46     return D_MAIN;
  47
  48   /* No known entry procedure found, the main program is probably not D.  */
  49   return NULL;
  50 }
  51
  52 /* Implements the la_demangle language_defn routine for language D.  */
  53
  54 gdb::unique_xmalloc_ptr<char>
  55 d_demangle (const char *symbol, int options)
  56 {
  57   return gdb_demangle (symbol, options | DMGL_DLANG);
  58 }
  59
  60 /* Class representing the D language.  */
  61
  62 class d_language : public language_defn
  63 {
  64 public:
  65   d_language ()
  66     : language_defn (language_d)
  67   { /* Nothing.  */ }
  68
  69   /* See language.h.  */
  70
  71   const char *name () const override
  72   { return "d"; }
  73
  74   /* See language.h.  */
  75
  76   const char *natural_name () const override
  77   { return "D"; }
  78
  79   /* See language.h.  */
  80
  81   const std::vector<const char *> &filename_extensions () const override
  82   {
  83     static const std::vector<const char *> extensions = { ".d" };
  84     return extensions;
  85   }
  86
  87   /* See language.h.  */
  88   void language_arch_info (struct gdbarch *gdbarch,
  89                            struct language_arch_info *lai) const override
  90   {
  91     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
  92
  93     /* Helper function to allow shorter lines below.  */
  94     auto add  = [&] (struct type * t)
  95     {
  96       lai->add_primitive_type (t);
  97     };
  98
  99     add (builtin->builtin_void);
 100     add (builtin->builtin_bool);
 101     add (builtin->builtin_byte);
 102     add (builtin->builtin_ubyte);
 103     add (builtin->builtin_short);
 104     add (builtin->builtin_ushort);
 105     add (builtin->builtin_int);
 106     add (builtin->builtin_uint);
 107     add (builtin->builtin_long);
 108     add (builtin->builtin_ulong);
 109     add (builtin->builtin_cent);
 110     add (builtin->builtin_ucent);
 111     add (builtin->builtin_float);
 112     add (builtin->builtin_double);
 113     add (builtin->builtin_real);
 114     add (builtin->builtin_ifloat);
 115     add (builtin->builtin_idouble);
 116     add (builtin->builtin_ireal);
 117     add (builtin->builtin_cfloat);
 118     add (builtin->builtin_cdouble);
 119     add (builtin->builtin_creal);
 120     add (builtin->builtin_char);
 121     add (builtin->builtin_wchar);
 122     add (builtin->builtin_dchar);
 123
 124     lai->set_string_char_type (builtin->builtin_char);
 125     lai->set_bool_type (builtin->builtin_bool, "bool");
 126   }
 127
 128   /* See language.h.  */
 129   bool sniff_from_mangled_name
 130        (const char *mangled,
 131         gdb::unique_xmalloc_ptr<char> *demangled) const override
 132   {
 133     *demangled = d_demangle (mangled, 0);
 134     return *demangled != NULL;
 135   }
 136
 137   /* See language.h.  */
 138
 139   gdb::unique_xmalloc_ptr<char> demangle_symbol (const char *mangled,
 140                                                  int options) const override
 141   {
 142     return d_demangle (mangled, options);
 143   }
 144
 145   /* See language.h.  */
 146
 147   bool can_print_type_offsets () const override
 148   {
 149     return true;
 150   }
 151
 152   /* See language.h.  */
 153
 154   void print_type (struct type *type, const char *varstring,
 155                    struct ui_file *stream, int show, int level,
 156                    const struct type_print_options *flags) const override
 157   {
 158     c_print_type (type, varstring, stream, show, level, la_language, flags);
 159   }
 160
 161   /* See language.h.  */
 162
 163   void value_print_inner
 164         (struct value *val, struct ui_file *stream, int recurse,
 165          const struct value_print_options *options) const override
 166   {
 167     return d_value_print_inner (val, stream, recurse, options);
 168   }
 169
 170   /* See language.h.  */
 171
 172   struct block_symbol lookup_symbol_nonlocal
 173         (const char *name, const struct block *block,
 174          const domain_enum domain) const override
 175   {
 176     return d_lookup_symbol_nonlocal (this, name, block, domain);
 177   }
 178
 179   /* See language.h.  */
 180
 181   int parser (struct parser_state *ps) const override
 182   {
 183     return d_parse (ps);
 184   }
 185
 186   /* See language.h.  */
 187
 188   const char *name_of_this () const override
 189   { return "this"; }
 190 };
 191
 192 /* Single instance of the D language class.  */
 193
 194 static d_language d_language_defn;
 195
 196 /* Build all D language types for the specified architecture.  */
 197
 198 static struct builtin_d_type *
 199 build_d_types (struct gdbarch *gdbarch)
 200 {
 201   struct builtin_d_type *builtin_d_type = new struct builtin_d_type;
 202
 203   /* Basic types.  */
 204   type_allocator alloc (gdbarch);
 205   builtin_d_type->builtin_void = builtin_type (gdbarch)->builtin_void;
 206   builtin_d_type->builtin_bool
 207     = init_boolean_type (alloc, 8, 1, "bool");
 208   builtin_d_type->builtin_byte
 209     = init_integer_type (alloc, 8, 0, "byte");
 210   builtin_d_type->builtin_ubyte
 211     = init_integer_type (alloc, 8, 1, "ubyte");
 212   builtin_d_type->builtin_short
 213     = init_integer_type (alloc, 16, 0, "short");
 214   builtin_d_type->builtin_ushort
 215     = init_integer_type (alloc, 16, 1, "ushort");
 216   builtin_d_type->builtin_int
 217     = init_integer_type (alloc, 32, 0, "int");
 218   builtin_d_type->builtin_uint
 219     = init_integer_type (alloc, 32, 1, "uint");
 220   builtin_d_type->builtin_long
 221     = init_integer_type (alloc, 64, 0, "long");
 222   builtin_d_type->builtin_ulong
 223     = init_integer_type (alloc, 64, 1, "ulong");
 224   builtin_d_type->builtin_cent
 225     = init_integer_type (alloc, 128, 0, "cent");
 226   builtin_d_type->builtin_ucent
 227     = init_integer_type (alloc, 128, 1, "ucent");
 228   builtin_d_type->builtin_float
 229     = init_float_type (alloc, gdbarch_float_bit (gdbarch),
 230                        "float", gdbarch_float_format (gdbarch));
 231   builtin_d_type->builtin_double
 232     = init_float_type (alloc, gdbarch_double_bit (gdbarch),
 233                        "double", gdbarch_double_format (gdbarch));
 234   builtin_d_type->builtin_real
 235     = init_float_type (alloc, gdbarch_long_double_bit (gdbarch),
 236                        "real", gdbarch_long_double_format (gdbarch));
 237
 238   builtin_d_type->builtin_byte->set_instance_flags
 239     (builtin_d_type->builtin_byte->instance_flags ()
 240      | TYPE_INSTANCE_FLAG_NOTTEXT);
 241
 242   builtin_d_type->builtin_ubyte->set_instance_flags
 243     (builtin_d_type->builtin_ubyte->instance_flags ()
 244      | TYPE_INSTANCE_FLAG_NOTTEXT);
 245
 246   /* Imaginary and complex types.  */
 247   builtin_d_type->builtin_ifloat
 248     = init_float_type (alloc, gdbarch_float_bit (gdbarch),
 249                        "ifloat", gdbarch_float_format (gdbarch));
 250   builtin_d_type->builtin_idouble
 251     = init_float_type (alloc, gdbarch_double_bit (gdbarch),
 252                        "idouble", gdbarch_double_format (gdbarch));
 253   builtin_d_type->builtin_ireal
 254     = init_float_type (alloc, gdbarch_long_double_bit (gdbarch),
 255                        "ireal", gdbarch_long_double_format (gdbarch));
 256   builtin_d_type->builtin_cfloat
 257     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 258   builtin_d_type->builtin_cdouble
 259     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 260   builtin_d_type->builtin_creal
 261     = init_complex_type ("creal", builtin_d_type->builtin_real);
 262
 263   /* Character types.  */
 264   builtin_d_type->builtin_char
 265     = init_character_type (alloc, 8, 1, "char");
 266   builtin_d_type->builtin_wchar
 267     = init_character_type (alloc, 16, 1, "wchar");
 268   builtin_d_type->builtin_dchar
 269     = init_character_type (alloc, 32, 1, "dchar");
 270
 271   return builtin_d_type;
 272 }
 273
 274 static const registry<gdbarch>::key<struct builtin_d_type> d_type_data;
 275
 276 /* Return the D type table for the specified architecture.  */
 277
 278 const struct builtin_d_type *
 279 builtin_d_type (struct gdbarch *gdbarch)
 280 {
 281   struct builtin_d_type *result = d_type_data.get (gdbarch);
 282   if (result == nullptr)
 283     {
 284       result = build_d_types (gdbarch);
 285       d_type_data.set (gdbarch, result);
 286     }
 287
 288   return result;
 289 }