gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2020 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
  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 char *
  54 d_demangle (const char *symbol, int options)
  55 {
  56   return gdb_demangle (symbol, options | DMGL_DLANG);
  57 }
  58
  59 /* Table mapping opcodes into strings for printing operators
  60    and precedences of the operators.  */
  61 static const struct op_print d_op_print_tab[] =
  62 {
  63   {",", BINOP_COMMA, PREC_COMMA, 0},
  64   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  65   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  66   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  67   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  68   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  69   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  70   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  71   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  72   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  73   {">=", BINOP_GEQ, PREC_ORDER, 0},
  74   {">", BINOP_GTR, PREC_ORDER, 0},
  75   {"<", BINOP_LESS, PREC_ORDER, 0},
  76   {">>", BINOP_RSH, PREC_SHIFT, 0},
  77   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  78   {"+", BINOP_ADD, PREC_ADD, 0},
  79   {"-", BINOP_SUB, PREC_ADD, 0},
  80   {"~", BINOP_CONCAT, PREC_ADD, 0},
  81   {"*", BINOP_MUL, PREC_MUL, 0},
  82   {"/", BINOP_DIV, PREC_MUL, 0},
  83   {"%", BINOP_REM, PREC_MUL, 0},
  84   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  85   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  86   {"-", UNOP_NEG, PREC_PREFIX, 0},
  87   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  88   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  89   {"*", UNOP_IND, PREC_PREFIX, 0},
  90   {"&", UNOP_ADDR, PREC_PREFIX, 0},
  91   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
  92   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
  93   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
  94   {NULL, OP_NULL, PREC_PREFIX, 0}
  95 };
  96
  97 /* Mapping of all D basic data types into the language vector.  */
  98
  99 enum d_primitive_types {
 100   d_primitive_type_void,
 101   d_primitive_type_bool,
 102   d_primitive_type_byte,
 103   d_primitive_type_ubyte,
 104   d_primitive_type_short,
 105   d_primitive_type_ushort,
 106   d_primitive_type_int,
 107   d_primitive_type_uint,
 108   d_primitive_type_long,
 109   d_primitive_type_ulong,
 110   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 111   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 112   d_primitive_type_float,
 113   d_primitive_type_double,
 114   d_primitive_type_real,
 115   d_primitive_type_ifloat,  /* Imaginary float types.  */
 116   d_primitive_type_idouble,
 117   d_primitive_type_ireal,
 118   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 119   d_primitive_type_cdouble,
 120   d_primitive_type_creal,
 121   d_primitive_type_char,    /* Unsigned character types.  */
 122   d_primitive_type_wchar,
 123   d_primitive_type_dchar,
 124   nr_d_primitive_types
 125 };
 126
 127 static const char *d_extensions[] =
 128 {
 129   ".d", NULL
 130 };
 131
 132 /* Constant data that describes the D language.  */
 133
 134 extern const struct language_data d_language_data =
 135 {
 136   "d",
 137   "D",
 138   language_d,
 139   range_check_off,
 140   case_sensitive_on,
 141   array_row_major,
 142   macro_expansion_no,
 143   d_extensions,
 144   &exp_descriptor_c,
 145   d_parse,
 146   null_post_parser,
 147   c_printchar,                  /* Print a character constant.  */
 148   c_printstr,                   /* Function to print string constant.  */
 149   c_emit_char,                  /* Print a single char.  */
 150   c_print_typedef,              /* Print a typedef using appropriate
 151                                    syntax.  */
 152   d_value_print_inner,          /* la_value_print_inner */
 153   c_value_print,                /* Print a top-level value.  */
 154   "this",
 155   false,                        /* la_store_sym_names_in_linkage_form_p */
 156   d_lookup_symbol_nonlocal,
 157   d_op_print_tab,               /* Expression operators for printing.  */
 158   1,                            /* C-style arrays.  */
 159   0,                            /* String lower bound.  */
 160   c_watch_location_expression,
 161   &default_varobj_ops,
 162   c_is_string_type_p,
 163   "{...}"                       /* la_struct_too_deep_ellipsis */
 164 };
 165
 166 /* Class representing the D language.  */
 167
 168 class d_language : public language_defn
 169 {
 170 public:
 171   d_language ()
 172     : language_defn (language_d, d_language_data)
 173   { /* Nothing.  */ }
 174
 175   /* See language.h.  */
 176   void language_arch_info (struct gdbarch *gdbarch,
 177                            struct language_arch_info *lai) const override
 178   {
 179     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 180
 181     lai->string_char_type = builtin->builtin_char;
 182     lai->primitive_type_vector
 183       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 184                                 struct type *);
 185
 186     lai->primitive_type_vector [d_primitive_type_void]
 187       = builtin->builtin_void;
 188     lai->primitive_type_vector [d_primitive_type_bool]
 189       = builtin->builtin_bool;
 190     lai->primitive_type_vector [d_primitive_type_byte]
 191       = builtin->builtin_byte;
 192     lai->primitive_type_vector [d_primitive_type_ubyte]
 193       = builtin->builtin_ubyte;
 194     lai->primitive_type_vector [d_primitive_type_short]
 195       = builtin->builtin_short;
 196     lai->primitive_type_vector [d_primitive_type_ushort]
 197       = builtin->builtin_ushort;
 198     lai->primitive_type_vector [d_primitive_type_int]
 199       = builtin->builtin_int;
 200     lai->primitive_type_vector [d_primitive_type_uint]
 201       = builtin->builtin_uint;
 202     lai->primitive_type_vector [d_primitive_type_long]
 203       = builtin->builtin_long;
 204     lai->primitive_type_vector [d_primitive_type_ulong]
 205       = builtin->builtin_ulong;
 206     lai->primitive_type_vector [d_primitive_type_cent]
 207       = builtin->builtin_cent;
 208     lai->primitive_type_vector [d_primitive_type_ucent]
 209       = builtin->builtin_ucent;
 210     lai->primitive_type_vector [d_primitive_type_float]
 211       = builtin->builtin_float;
 212     lai->primitive_type_vector [d_primitive_type_double]
 213       = builtin->builtin_double;
 214     lai->primitive_type_vector [d_primitive_type_real]
 215       = builtin->builtin_real;
 216     lai->primitive_type_vector [d_primitive_type_ifloat]
 217       = builtin->builtin_ifloat;
 218     lai->primitive_type_vector [d_primitive_type_idouble]
 219       = builtin->builtin_idouble;
 220     lai->primitive_type_vector [d_primitive_type_ireal]
 221       = builtin->builtin_ireal;
 222     lai->primitive_type_vector [d_primitive_type_cfloat]
 223       = builtin->builtin_cfloat;
 224     lai->primitive_type_vector [d_primitive_type_cdouble]
 225       = builtin->builtin_cdouble;
 226     lai->primitive_type_vector [d_primitive_type_creal]
 227       = builtin->builtin_creal;
 228     lai->primitive_type_vector [d_primitive_type_char]
 229       = builtin->builtin_char;
 230     lai->primitive_type_vector [d_primitive_type_wchar]
 231       = builtin->builtin_wchar;
 232     lai->primitive_type_vector [d_primitive_type_dchar]
 233       = builtin->builtin_dchar;
 234
 235     lai->bool_type_symbol = "bool";
 236     lai->bool_type_default = builtin->builtin_bool;
 237   }
 238
 239   /* See language.h.  */
 240   bool sniff_from_mangled_name (const char *mangled,
 241                                 char **demangled) const override
 242   {
 243     *demangled = d_demangle (mangled, 0);
 244     return *demangled != NULL;
 245   }
 246
 247   /* See language.h.  */
 248
 249   char *demangle (const char *mangled, int options) const override
 250   {
 251     return d_demangle (mangled, options);
 252   }
 253
 254   /* See language.h.  */
 255
 256   void print_type (struct type *type, const char *varstring,
 257                    struct ui_file *stream, int show, int level,
 258                    const struct type_print_options *flags) const override
 259   {
 260     c_print_type (type, varstring, stream, show, level, flags);
 261   }
 262 };
 263
 264 /* Single instance of the D language class.  */
 265
 266 static d_language d_language_defn;
 267
 268 /* Build all D language types for the specified architecture.  */
 269
 270 static void *
 271 build_d_types (struct gdbarch *gdbarch)
 272 {
 273   struct builtin_d_type *builtin_d_type
 274     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 275
 276   /* Basic types.  */
 277   builtin_d_type->builtin_void
 278     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 279   builtin_d_type->builtin_bool
 280     = arch_boolean_type (gdbarch, 8, 1, "bool");
 281   builtin_d_type->builtin_byte
 282     = arch_integer_type (gdbarch, 8, 0, "byte");
 283   builtin_d_type->builtin_ubyte
 284     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 285   builtin_d_type->builtin_short
 286     = arch_integer_type (gdbarch, 16, 0, "short");
 287   builtin_d_type->builtin_ushort
 288     = arch_integer_type (gdbarch, 16, 1, "ushort");
 289   builtin_d_type->builtin_int
 290     = arch_integer_type (gdbarch, 32, 0, "int");
 291   builtin_d_type->builtin_uint
 292     = arch_integer_type (gdbarch, 32, 1, "uint");
 293   builtin_d_type->builtin_long
 294     = arch_integer_type (gdbarch, 64, 0, "long");
 295   builtin_d_type->builtin_ulong
 296     = arch_integer_type (gdbarch, 64, 1, "ulong");
 297   builtin_d_type->builtin_cent
 298     = arch_integer_type (gdbarch, 128, 0, "cent");
 299   builtin_d_type->builtin_ucent
 300     = arch_integer_type (gdbarch, 128, 1, "ucent");
 301   builtin_d_type->builtin_float
 302     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 303                        "float", gdbarch_float_format (gdbarch));
 304   builtin_d_type->builtin_double
 305     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 306                        "double", gdbarch_double_format (gdbarch));
 307   builtin_d_type->builtin_real
 308     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 309                        "real", gdbarch_long_double_format (gdbarch));
 310
 311   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 312     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 313   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 314     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 315
 316   /* Imaginary and complex types.  */
 317   builtin_d_type->builtin_ifloat
 318     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 319                        "ifloat", gdbarch_float_format (gdbarch));
 320   builtin_d_type->builtin_idouble
 321     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 322                        "idouble", gdbarch_double_format (gdbarch));
 323   builtin_d_type->builtin_ireal
 324     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 325                        "ireal", gdbarch_long_double_format (gdbarch));
 326   builtin_d_type->builtin_cfloat
 327     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 328   builtin_d_type->builtin_cdouble
 329     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 330   builtin_d_type->builtin_creal
 331     = init_complex_type ("creal", builtin_d_type->builtin_real);
 332
 333   /* Character types.  */
 334   builtin_d_type->builtin_char
 335     = arch_character_type (gdbarch, 8, 1, "char");
 336   builtin_d_type->builtin_wchar
 337     = arch_character_type (gdbarch, 16, 1, "wchar");
 338   builtin_d_type->builtin_dchar
 339     = arch_character_type (gdbarch, 32, 1, "dchar");
 340
 341   return builtin_d_type;
 342 }
 343
 344 static struct gdbarch_data *d_type_data;
 345
 346 /* Return the D type table for the specified architecture.  */
 347
 348 const struct builtin_d_type *
 349 builtin_d_type (struct gdbarch *gdbarch)
 350 {
 351   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 352 }
 353
 354 void _initialize_d_language ();
 355 void
 356 _initialize_d_language ()
 357 {
 358   d_type_data = gdbarch_data_register_post_init (build_d_types);
 359 }