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 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 (const char *mangled,
 130                                 char **demangled) const override
 131   {
 132     *demangled = d_demangle (mangled, 0);
 133     return *demangled != NULL;
 134   }
 135
 136   /* See language.h.  */
 137
 138   char *demangle_symbol (const char *mangled, int options) const override
 139   {
 140     return d_demangle (mangled, options);
 141   }
 142
 143   /* See language.h.  */
 144
 145   void print_type (struct type *type, const char *varstring,
 146                    struct ui_file *stream, int show, int level,
 147                    const struct type_print_options *flags) const override
 148   {
 149     c_print_type (type, varstring, stream, show, level, flags);
 150   }
 151
 152   /* See language.h.  */
 153
 154   void value_print_inner
 155         (struct value *val, struct ui_file *stream, int recurse,
 156          const struct value_print_options *options) const override
 157   {
 158     return d_value_print_inner (val, stream, recurse, options);
 159   }
 160
 161   /* See language.h.  */
 162
 163   struct block_symbol lookup_symbol_nonlocal
 164         (const char *name, const struct block *block,
 165          const domain_enum domain) const override
 166   {
 167     return d_lookup_symbol_nonlocal (this, name, block, domain);
 168   }
 169
 170   /* See language.h.  */
 171
 172   int parser (struct parser_state *ps) const override
 173   {
 174     return d_parse (ps);
 175   }
 176
 177   /* See language.h.  */
 178
 179   const char *name_of_this () const override
 180   { return "this"; }
 181 };
 182
 183 /* Single instance of the D language class.  */
 184
 185 static d_language d_language_defn;
 186
 187 /* Build all D language types for the specified architecture.  */
 188
 189 static void *
 190 build_d_types (struct gdbarch *gdbarch)
 191 {
 192   struct builtin_d_type *builtin_d_type
 193     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 194
 195   /* Basic types.  */
 196   builtin_d_type->builtin_void
 197     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 198   builtin_d_type->builtin_bool
 199     = arch_boolean_type (gdbarch, 8, 1, "bool");
 200   builtin_d_type->builtin_byte
 201     = arch_integer_type (gdbarch, 8, 0, "byte");
 202   builtin_d_type->builtin_ubyte
 203     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 204   builtin_d_type->builtin_short
 205     = arch_integer_type (gdbarch, 16, 0, "short");
 206   builtin_d_type->builtin_ushort
 207     = arch_integer_type (gdbarch, 16, 1, "ushort");
 208   builtin_d_type->builtin_int
 209     = arch_integer_type (gdbarch, 32, 0, "int");
 210   builtin_d_type->builtin_uint
 211     = arch_integer_type (gdbarch, 32, 1, "uint");
 212   builtin_d_type->builtin_long
 213     = arch_integer_type (gdbarch, 64, 0, "long");
 214   builtin_d_type->builtin_ulong
 215     = arch_integer_type (gdbarch, 64, 1, "ulong");
 216   builtin_d_type->builtin_cent
 217     = arch_integer_type (gdbarch, 128, 0, "cent");
 218   builtin_d_type->builtin_ucent
 219     = arch_integer_type (gdbarch, 128, 1, "ucent");
 220   builtin_d_type->builtin_float
 221     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 222                        "float", gdbarch_float_format (gdbarch));
 223   builtin_d_type->builtin_double
 224     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 225                        "double", gdbarch_double_format (gdbarch));
 226   builtin_d_type->builtin_real
 227     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 228                        "real", gdbarch_long_double_format (gdbarch));
 229
 230   builtin_d_type->builtin_byte->set_instance_flags
 231     (builtin_d_type->builtin_byte->instance_flags ()
 232      | TYPE_INSTANCE_FLAG_NOTTEXT);
 233
 234   builtin_d_type->builtin_ubyte->set_instance_flags
 235     (builtin_d_type->builtin_ubyte->instance_flags ()
 236      | TYPE_INSTANCE_FLAG_NOTTEXT);
 237
 238   /* Imaginary and complex types.  */
 239   builtin_d_type->builtin_ifloat
 240     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 241                        "ifloat", gdbarch_float_format (gdbarch));
 242   builtin_d_type->builtin_idouble
 243     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 244                        "idouble", gdbarch_double_format (gdbarch));
 245   builtin_d_type->builtin_ireal
 246     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 247                        "ireal", gdbarch_long_double_format (gdbarch));
 248   builtin_d_type->builtin_cfloat
 249     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 250   builtin_d_type->builtin_cdouble
 251     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 252   builtin_d_type->builtin_creal
 253     = init_complex_type ("creal", builtin_d_type->builtin_real);
 254
 255   /* Character types.  */
 256   builtin_d_type->builtin_char
 257     = arch_character_type (gdbarch, 8, 1, "char");
 258   builtin_d_type->builtin_wchar
 259     = arch_character_type (gdbarch, 16, 1, "wchar");
 260   builtin_d_type->builtin_dchar
 261     = arch_character_type (gdbarch, 32, 1, "dchar");
 262
 263   return builtin_d_type;
 264 }
 265
 266 static struct gdbarch_data *d_type_data;
 267
 268 /* Return the D type table for the specified architecture.  */
 269
 270 const struct builtin_d_type *
 271 builtin_d_type (struct gdbarch *gdbarch)
 272 {
 273   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 274 }
 275
 276 void _initialize_d_language ();
 277 void
 278 _initialize_d_language ()
 279 {
 280   d_type_data = gdbarch_data_register_post_init (build_d_types);
 281 }