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