gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2022 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   void print_type (struct type *type, const char *varstring,
 148                    struct ui_file *stream, int show, int level,
 149                    const struct type_print_options *flags) const override
 150   {
 151     c_print_type (type, varstring, stream, show, level, la_language, flags);
 152   }
 153
 154   /* See language.h.  */
 155
 156   void value_print_inner
 157         (struct value *val, struct ui_file *stream, int recurse,
 158          const struct value_print_options *options) const override
 159   {
 160     return d_value_print_inner (val, stream, recurse, options);
 161   }
 162
 163   /* See language.h.  */
 164
 165   struct block_symbol lookup_symbol_nonlocal
 166         (const char *name, const struct block *block,
 167          const domain_enum domain) const override
 168   {
 169     return d_lookup_symbol_nonlocal (this, name, block, domain);
 170   }
 171
 172   /* See language.h.  */
 173
 174   int parser (struct parser_state *ps) const override
 175   {
 176     return d_parse (ps);
 177   }
 178
 179   /* See language.h.  */
 180
 181   const char *name_of_this () const override
 182   { return "this"; }
 183 };
 184
 185 /* Single instance of the D language class.  */
 186
 187 static d_language d_language_defn;
 188
 189 /* Build all D language types for the specified architecture.  */
 190
 191 static struct builtin_d_type *
 192 build_d_types (struct gdbarch *gdbarch)
 193 {
 194   struct builtin_d_type *builtin_d_type = new struct builtin_d_type;
 195
 196   /* Basic types.  */
 197   builtin_d_type->builtin_void
 198     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 199   builtin_d_type->builtin_bool
 200     = arch_boolean_type (gdbarch, 8, 1, "bool");
 201   builtin_d_type->builtin_byte
 202     = arch_integer_type (gdbarch, 8, 0, "byte");
 203   builtin_d_type->builtin_ubyte
 204     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 205   builtin_d_type->builtin_short
 206     = arch_integer_type (gdbarch, 16, 0, "short");
 207   builtin_d_type->builtin_ushort
 208     = arch_integer_type (gdbarch, 16, 1, "ushort");
 209   builtin_d_type->builtin_int
 210     = arch_integer_type (gdbarch, 32, 0, "int");
 211   builtin_d_type->builtin_uint
 212     = arch_integer_type (gdbarch, 32, 1, "uint");
 213   builtin_d_type->builtin_long
 214     = arch_integer_type (gdbarch, 64, 0, "long");
 215   builtin_d_type->builtin_ulong
 216     = arch_integer_type (gdbarch, 64, 1, "ulong");
 217   builtin_d_type->builtin_cent
 218     = arch_integer_type (gdbarch, 128, 0, "cent");
 219   builtin_d_type->builtin_ucent
 220     = arch_integer_type (gdbarch, 128, 1, "ucent");
 221   builtin_d_type->builtin_float
 222     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 223                        "float", gdbarch_float_format (gdbarch));
 224   builtin_d_type->builtin_double
 225     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 226                        "double", gdbarch_double_format (gdbarch));
 227   builtin_d_type->builtin_real
 228     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 229                        "real", gdbarch_long_double_format (gdbarch));
 230
 231   builtin_d_type->builtin_byte->set_instance_flags
 232     (builtin_d_type->builtin_byte->instance_flags ()
 233      | TYPE_INSTANCE_FLAG_NOTTEXT);
 234
 235   builtin_d_type->builtin_ubyte->set_instance_flags
 236     (builtin_d_type->builtin_ubyte->instance_flags ()
 237      | TYPE_INSTANCE_FLAG_NOTTEXT);
 238
 239   /* Imaginary and complex types.  */
 240   builtin_d_type->builtin_ifloat
 241     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 242                        "ifloat", gdbarch_float_format (gdbarch));
 243   builtin_d_type->builtin_idouble
 244     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 245                        "idouble", gdbarch_double_format (gdbarch));
 246   builtin_d_type->builtin_ireal
 247     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 248                        "ireal", gdbarch_long_double_format (gdbarch));
 249   builtin_d_type->builtin_cfloat
 250     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 251   builtin_d_type->builtin_cdouble
 252     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 253   builtin_d_type->builtin_creal
 254     = init_complex_type ("creal", builtin_d_type->builtin_real);
 255
 256   /* Character types.  */
 257   builtin_d_type->builtin_char
 258     = arch_character_type (gdbarch, 8, 1, "char");
 259   builtin_d_type->builtin_wchar
 260     = arch_character_type (gdbarch, 16, 1, "wchar");
 261   builtin_d_type->builtin_dchar
 262     = arch_character_type (gdbarch, 32, 1, "dchar");
 263
 264   return builtin_d_type;
 265 }
 266
 267 static const registry<gdbarch>::key<struct builtin_d_type> d_type_data;
 268
 269 /* Return the D type table for the specified architecture.  */
 270
 271 const struct builtin_d_type *
 272 builtin_d_type (struct gdbarch *gdbarch)
 273 {
 274   struct builtin_d_type *result = d_type_data.get (gdbarch);
 275   if (result == nullptr)
 276     {
 277       result = build_d_types (gdbarch);
 278       d_type_data.set (gdbarch, result);
 279     }
 280
 281   return result;
 282 }