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   NULL,                         /* Language specific
 158                                    class_name_from_physname.  */
 159   d_op_print_tab,               /* Expression operators for printing.  */
 160   1,                            /* C-style arrays.  */
 161   0,                            /* String lower bound.  */
 162   default_word_break_characters,
 163   default_collect_symbol_completion_matches,
 164   c_watch_location_expression,
 165   NULL,                         /* la_get_symbol_name_matcher */
 166   &default_varobj_ops,
 167   NULL,
 168   c_is_string_type_p,
 169   "{...}"                       /* la_struct_too_deep_ellipsis */
 170 };
 171
 172 /* Class representing the D language.  */
 173
 174 class d_language : public language_defn
 175 {
 176 public:
 177   d_language ()
 178     : language_defn (language_d, d_language_data)
 179   { /* Nothing.  */ }
 180
 181   /* See language.h.  */
 182   void language_arch_info (struct gdbarch *gdbarch,
 183                            struct language_arch_info *lai) const override
 184   {
 185     const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 186
 187     lai->string_char_type = builtin->builtin_char;
 188     lai->primitive_type_vector
 189       = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 190                                 struct type *);
 191
 192     lai->primitive_type_vector [d_primitive_type_void]
 193       = builtin->builtin_void;
 194     lai->primitive_type_vector [d_primitive_type_bool]
 195       = builtin->builtin_bool;
 196     lai->primitive_type_vector [d_primitive_type_byte]
 197       = builtin->builtin_byte;
 198     lai->primitive_type_vector [d_primitive_type_ubyte]
 199       = builtin->builtin_ubyte;
 200     lai->primitive_type_vector [d_primitive_type_short]
 201       = builtin->builtin_short;
 202     lai->primitive_type_vector [d_primitive_type_ushort]
 203       = builtin->builtin_ushort;
 204     lai->primitive_type_vector [d_primitive_type_int]
 205       = builtin->builtin_int;
 206     lai->primitive_type_vector [d_primitive_type_uint]
 207       = builtin->builtin_uint;
 208     lai->primitive_type_vector [d_primitive_type_long]
 209       = builtin->builtin_long;
 210     lai->primitive_type_vector [d_primitive_type_ulong]
 211       = builtin->builtin_ulong;
 212     lai->primitive_type_vector [d_primitive_type_cent]
 213       = builtin->builtin_cent;
 214     lai->primitive_type_vector [d_primitive_type_ucent]
 215       = builtin->builtin_ucent;
 216     lai->primitive_type_vector [d_primitive_type_float]
 217       = builtin->builtin_float;
 218     lai->primitive_type_vector [d_primitive_type_double]
 219       = builtin->builtin_double;
 220     lai->primitive_type_vector [d_primitive_type_real]
 221       = builtin->builtin_real;
 222     lai->primitive_type_vector [d_primitive_type_ifloat]
 223       = builtin->builtin_ifloat;
 224     lai->primitive_type_vector [d_primitive_type_idouble]
 225       = builtin->builtin_idouble;
 226     lai->primitive_type_vector [d_primitive_type_ireal]
 227       = builtin->builtin_ireal;
 228     lai->primitive_type_vector [d_primitive_type_cfloat]
 229       = builtin->builtin_cfloat;
 230     lai->primitive_type_vector [d_primitive_type_cdouble]
 231       = builtin->builtin_cdouble;
 232     lai->primitive_type_vector [d_primitive_type_creal]
 233       = builtin->builtin_creal;
 234     lai->primitive_type_vector [d_primitive_type_char]
 235       = builtin->builtin_char;
 236     lai->primitive_type_vector [d_primitive_type_wchar]
 237       = builtin->builtin_wchar;
 238     lai->primitive_type_vector [d_primitive_type_dchar]
 239       = builtin->builtin_dchar;
 240
 241     lai->bool_type_symbol = "bool";
 242     lai->bool_type_default = builtin->builtin_bool;
 243   }
 244
 245   /* See language.h.  */
 246   bool sniff_from_mangled_name (const char *mangled,
 247                                 char **demangled) const override
 248   {
 249     *demangled = d_demangle (mangled, 0);
 250     return *demangled != NULL;
 251   }
 252
 253   /* See language.h.  */
 254
 255   char *demangle (const char *mangled, int options) const override
 256   {
 257     return d_demangle (mangled, options);
 258   }
 259
 260   /* See language.h.  */
 261
 262   void print_type (struct type *type, const char *varstring,
 263                    struct ui_file *stream, int show, int level,
 264                    const struct type_print_options *flags) const override
 265   {
 266     c_print_type (type, varstring, stream, show, level, flags);
 267   }
 268 };
 269
 270 /* Single instance of the D language class.  */
 271
 272 static d_language d_language_defn;
 273
 274 /* Build all D language types for the specified architecture.  */
 275
 276 static void *
 277 build_d_types (struct gdbarch *gdbarch)
 278 {
 279   struct builtin_d_type *builtin_d_type
 280     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 281
 282   /* Basic types.  */
 283   builtin_d_type->builtin_void
 284     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 285   builtin_d_type->builtin_bool
 286     = arch_boolean_type (gdbarch, 8, 1, "bool");
 287   builtin_d_type->builtin_byte
 288     = arch_integer_type (gdbarch, 8, 0, "byte");
 289   builtin_d_type->builtin_ubyte
 290     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 291   builtin_d_type->builtin_short
 292     = arch_integer_type (gdbarch, 16, 0, "short");
 293   builtin_d_type->builtin_ushort
 294     = arch_integer_type (gdbarch, 16, 1, "ushort");
 295   builtin_d_type->builtin_int
 296     = arch_integer_type (gdbarch, 32, 0, "int");
 297   builtin_d_type->builtin_uint
 298     = arch_integer_type (gdbarch, 32, 1, "uint");
 299   builtin_d_type->builtin_long
 300     = arch_integer_type (gdbarch, 64, 0, "long");
 301   builtin_d_type->builtin_ulong
 302     = arch_integer_type (gdbarch, 64, 1, "ulong");
 303   builtin_d_type->builtin_cent
 304     = arch_integer_type (gdbarch, 128, 0, "cent");
 305   builtin_d_type->builtin_ucent
 306     = arch_integer_type (gdbarch, 128, 1, "ucent");
 307   builtin_d_type->builtin_float
 308     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 309                        "float", gdbarch_float_format (gdbarch));
 310   builtin_d_type->builtin_double
 311     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 312                        "double", gdbarch_double_format (gdbarch));
 313   builtin_d_type->builtin_real
 314     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 315                        "real", gdbarch_long_double_format (gdbarch));
 316
 317   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 318     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 319   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 320     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 321
 322   /* Imaginary and complex types.  */
 323   builtin_d_type->builtin_ifloat
 324     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 325                        "ifloat", gdbarch_float_format (gdbarch));
 326   builtin_d_type->builtin_idouble
 327     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 328                        "idouble", gdbarch_double_format (gdbarch));
 329   builtin_d_type->builtin_ireal
 330     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 331                        "ireal", gdbarch_long_double_format (gdbarch));
 332   builtin_d_type->builtin_cfloat
 333     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 334   builtin_d_type->builtin_cdouble
 335     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 336   builtin_d_type->builtin_creal
 337     = init_complex_type ("creal", builtin_d_type->builtin_real);
 338
 339   /* Character types.  */
 340   builtin_d_type->builtin_char
 341     = arch_character_type (gdbarch, 8, 1, "char");
 342   builtin_d_type->builtin_wchar
 343     = arch_character_type (gdbarch, 16, 1, "wchar");
 344   builtin_d_type->builtin_dchar
 345     = arch_character_type (gdbarch, 32, 1, "dchar");
 346
 347   return builtin_d_type;
 348 }
 349
 350 static struct gdbarch_data *d_type_data;
 351
 352 /* Return the D type table for the specified architecture.  */
 353
 354 const struct builtin_d_type *
 355 builtin_d_type (struct gdbarch *gdbarch)
 356 {
 357   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 358 }
 359
 360 void _initialize_d_language ();
 361 void
 362 _initialize_d_language ()
 363 {
 364   d_type_data = gdbarch_data_register_post_init (build_d_types);
 365 }