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 /* la_sniff_from_mangled_name implementation for D.  */
  60
  61 static int
  62 d_sniff_from_mangled_name (const char *mangled, char **demangled)
  63 {
  64   *demangled = d_demangle (mangled, 0);
  65   return *demangled != NULL;
  66 }
  67
  68 /* Table mapping opcodes into strings for printing operators
  69    and precedences of the operators.  */
  70 static const struct op_print d_op_print_tab[] =
  71 {
  72   {",", BINOP_COMMA, PREC_COMMA, 0},
  73   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  74   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  75   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  76   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  77   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  78   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
  79   {"==", BINOP_EQUAL, PREC_ORDER, 0},
  80   {"!=", BINOP_NOTEQUAL, PREC_ORDER, 0},
  81   {"<=", BINOP_LEQ, PREC_ORDER, 0},
  82   {">=", BINOP_GEQ, PREC_ORDER, 0},
  83   {">", BINOP_GTR, PREC_ORDER, 0},
  84   {"<", BINOP_LESS, PREC_ORDER, 0},
  85   {">>", BINOP_RSH, PREC_SHIFT, 0},
  86   {"<<", BINOP_LSH, PREC_SHIFT, 0},
  87   {"+", BINOP_ADD, PREC_ADD, 0},
  88   {"-", BINOP_SUB, PREC_ADD, 0},
  89   {"~", BINOP_CONCAT, PREC_ADD, 0},
  90   {"*", BINOP_MUL, PREC_MUL, 0},
  91   {"/", BINOP_DIV, PREC_MUL, 0},
  92   {"%", BINOP_REM, PREC_MUL, 0},
  93   {"^^", BINOP_EXP, PREC_REPEAT, 0},
  94   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  95   {"-", UNOP_NEG, PREC_PREFIX, 0},
  96   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  97   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
  98   {"*", UNOP_IND, PREC_PREFIX, 0},
  99   {"&", UNOP_ADDR, PREC_PREFIX, 0},
 100   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 101   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 102   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 103   {NULL, OP_NULL, PREC_PREFIX, 0}
 104 };
 105
 106 /* Mapping of all D basic data types into the language vector.  */
 107
 108 enum d_primitive_types {
 109   d_primitive_type_void,
 110   d_primitive_type_bool,
 111   d_primitive_type_byte,
 112   d_primitive_type_ubyte,
 113   d_primitive_type_short,
 114   d_primitive_type_ushort,
 115   d_primitive_type_int,
 116   d_primitive_type_uint,
 117   d_primitive_type_long,
 118   d_primitive_type_ulong,
 119   d_primitive_type_cent,    /* Signed 128 bit integer.  */
 120   d_primitive_type_ucent,   /* Unsigned 128 bit integer.  */
 121   d_primitive_type_float,
 122   d_primitive_type_double,
 123   d_primitive_type_real,
 124   d_primitive_type_ifloat,  /* Imaginary float types.  */
 125   d_primitive_type_idouble,
 126   d_primitive_type_ireal,
 127   d_primitive_type_cfloat,  /* Complex number of two float values.  */
 128   d_primitive_type_cdouble,
 129   d_primitive_type_creal,
 130   d_primitive_type_char,    /* Unsigned character types.  */
 131   d_primitive_type_wchar,
 132   d_primitive_type_dchar,
 133   nr_d_primitive_types
 134 };
 135
 136 /* Implements the la_language_arch_info language_defn routine
 137    for language D.  */
 138
 139 static void
 140 d_language_arch_info (struct gdbarch *gdbarch,
 141                       struct language_arch_info *lai)
 142 {
 143   const struct builtin_d_type *builtin = builtin_d_type (gdbarch);
 144
 145   lai->string_char_type = builtin->builtin_char;
 146   lai->primitive_type_vector
 147     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_d_primitive_types + 1,
 148                               struct type *);
 149
 150   lai->primitive_type_vector [d_primitive_type_void]
 151     = builtin->builtin_void;
 152   lai->primitive_type_vector [d_primitive_type_bool]
 153     = builtin->builtin_bool;
 154   lai->primitive_type_vector [d_primitive_type_byte]
 155     = builtin->builtin_byte;
 156   lai->primitive_type_vector [d_primitive_type_ubyte]
 157     = builtin->builtin_ubyte;
 158   lai->primitive_type_vector [d_primitive_type_short]
 159     = builtin->builtin_short;
 160   lai->primitive_type_vector [d_primitive_type_ushort]
 161     = builtin->builtin_ushort;
 162   lai->primitive_type_vector [d_primitive_type_int]
 163     = builtin->builtin_int;
 164   lai->primitive_type_vector [d_primitive_type_uint]
 165     = builtin->builtin_uint;
 166   lai->primitive_type_vector [d_primitive_type_long]
 167     = builtin->builtin_long;
 168   lai->primitive_type_vector [d_primitive_type_ulong]
 169     = builtin->builtin_ulong;
 170   lai->primitive_type_vector [d_primitive_type_cent]
 171     = builtin->builtin_cent;
 172   lai->primitive_type_vector [d_primitive_type_ucent]
 173     = builtin->builtin_ucent;
 174   lai->primitive_type_vector [d_primitive_type_float]
 175     = builtin->builtin_float;
 176   lai->primitive_type_vector [d_primitive_type_double]
 177     = builtin->builtin_double;
 178   lai->primitive_type_vector [d_primitive_type_real]
 179     = builtin->builtin_real;
 180   lai->primitive_type_vector [d_primitive_type_ifloat]
 181     = builtin->builtin_ifloat;
 182   lai->primitive_type_vector [d_primitive_type_idouble]
 183     = builtin->builtin_idouble;
 184   lai->primitive_type_vector [d_primitive_type_ireal]
 185     = builtin->builtin_ireal;
 186   lai->primitive_type_vector [d_primitive_type_cfloat]
 187     = builtin->builtin_cfloat;
 188   lai->primitive_type_vector [d_primitive_type_cdouble]
 189     = builtin->builtin_cdouble;
 190   lai->primitive_type_vector [d_primitive_type_creal]
 191     = builtin->builtin_creal;
 192   lai->primitive_type_vector [d_primitive_type_char]
 193     = builtin->builtin_char;
 194   lai->primitive_type_vector [d_primitive_type_wchar]
 195     = builtin->builtin_wchar;
 196   lai->primitive_type_vector [d_primitive_type_dchar]
 197     = builtin->builtin_dchar;
 198
 199   lai->bool_type_symbol = "bool";
 200   lai->bool_type_default = builtin->builtin_bool;
 201 }
 202
 203 static const char *d_extensions[] =
 204 {
 205   ".d", NULL
 206 };
 207
 208 /* Constant data that describes the D language.  */
 209
 210 extern const struct language_data d_language_data =
 211 {
 212   "d",
 213   "D",
 214   language_d,
 215   range_check_off,
 216   case_sensitive_on,
 217   array_row_major,
 218   macro_expansion_no,
 219   d_extensions,
 220   &exp_descriptor_c,
 221   d_parse,
 222   null_post_parser,
 223   c_printchar,                  /* Print a character constant.  */
 224   c_printstr,                   /* Function to print string constant.  */
 225   c_emit_char,                  /* Print a single char.  */
 226   c_print_type,                 /* Print a type using appropriate syntax.  */
 227   c_print_typedef,              /* Print a typedef using appropriate
 228                                    syntax.  */
 229   d_value_print_inner,          /* la_value_print_inner */
 230   c_value_print,                /* Print a top-level value.  */
 231   NULL,                         /* Language specific skip_trampoline.  */
 232   "this",
 233   false,                        /* la_store_sym_names_in_linkage_form_p */
 234   d_lookup_symbol_nonlocal,
 235   basic_lookup_transparent_type,
 236   d_demangle,                   /* Language specific symbol demangler.  */
 237   d_sniff_from_mangled_name,
 238   NULL,                         /* Language specific
 239                                    class_name_from_physname.  */
 240   d_op_print_tab,               /* Expression operators for printing.  */
 241   1,                            /* C-style arrays.  */
 242   0,                            /* String lower bound.  */
 243   default_word_break_characters,
 244   default_collect_symbol_completion_matches,
 245   d_language_arch_info,
 246   default_pass_by_reference,
 247   c_watch_location_expression,
 248   NULL,                         /* la_get_symbol_name_matcher */
 249   iterate_over_symbols,
 250   default_search_name_hash,
 251   &default_varobj_ops,
 252   NULL,
 253   NULL,
 254   c_is_string_type_p,
 255   "{...}"                       /* la_struct_too_deep_ellipsis */
 256 };
 257
 258 /* Class representing the D language.  */
 259
 260 class d_language : public language_defn
 261 {
 262 public:
 263   d_language ()
 264     : language_defn (language_d, d_language_data)
 265   { /* Nothing.  */ }
 266 };
 267
 268 /* Single instance of the D language class.  */
 269
 270 static d_language d_language_defn;
 271
 272 /* Build all D language types for the specified architecture.  */
 273
 274 static void *
 275 build_d_types (struct gdbarch *gdbarch)
 276 {
 277   struct builtin_d_type *builtin_d_type
 278     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 279
 280   /* Basic types.  */
 281   builtin_d_type->builtin_void
 282     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 283   builtin_d_type->builtin_bool
 284     = arch_boolean_type (gdbarch, 8, 1, "bool");
 285   builtin_d_type->builtin_byte
 286     = arch_integer_type (gdbarch, 8, 0, "byte");
 287   builtin_d_type->builtin_ubyte
 288     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 289   builtin_d_type->builtin_short
 290     = arch_integer_type (gdbarch, 16, 0, "short");
 291   builtin_d_type->builtin_ushort
 292     = arch_integer_type (gdbarch, 16, 1, "ushort");
 293   builtin_d_type->builtin_int
 294     = arch_integer_type (gdbarch, 32, 0, "int");
 295   builtin_d_type->builtin_uint
 296     = arch_integer_type (gdbarch, 32, 1, "uint");
 297   builtin_d_type->builtin_long
 298     = arch_integer_type (gdbarch, 64, 0, "long");
 299   builtin_d_type->builtin_ulong
 300     = arch_integer_type (gdbarch, 64, 1, "ulong");
 301   builtin_d_type->builtin_cent
 302     = arch_integer_type (gdbarch, 128, 0, "cent");
 303   builtin_d_type->builtin_ucent
 304     = arch_integer_type (gdbarch, 128, 1, "ucent");
 305   builtin_d_type->builtin_float
 306     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 307                        "float", gdbarch_float_format (gdbarch));
 308   builtin_d_type->builtin_double
 309     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 310                        "double", gdbarch_double_format (gdbarch));
 311   builtin_d_type->builtin_real
 312     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 313                        "real", gdbarch_long_double_format (gdbarch));
 314
 315   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 316     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 317   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 318     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 319
 320   /* Imaginary and complex types.  */
 321   builtin_d_type->builtin_ifloat
 322     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 323                        "ifloat", gdbarch_float_format (gdbarch));
 324   builtin_d_type->builtin_idouble
 325     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 326                        "idouble", gdbarch_double_format (gdbarch));
 327   builtin_d_type->builtin_ireal
 328     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 329                        "ireal", gdbarch_long_double_format (gdbarch));
 330   builtin_d_type->builtin_cfloat
 331     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 332   builtin_d_type->builtin_cdouble
 333     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 334   builtin_d_type->builtin_creal
 335     = init_complex_type ("creal", builtin_d_type->builtin_real);
 336
 337   /* Character types.  */
 338   builtin_d_type->builtin_char
 339     = arch_character_type (gdbarch, 8, 1, "char");
 340   builtin_d_type->builtin_wchar
 341     = arch_character_type (gdbarch, 16, 1, "wchar");
 342   builtin_d_type->builtin_dchar
 343     = arch_character_type (gdbarch, 32, 1, "dchar");
 344
 345   return builtin_d_type;
 346 }
 347
 348 static struct gdbarch_data *d_type_data;
 349
 350 /* Return the D type table for the specified architecture.  */
 351
 352 const struct builtin_d_type *
 353 builtin_d_type (struct gdbarch *gdbarch)
 354 {
 355   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 356 }
 357
 358 void _initialize_d_language ();
 359 void
 360 _initialize_d_language ()
 361 {
 362   d_type_data = gdbarch_data_register_post_init (build_d_types);
 363 }