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   c_watch_location_expression,
 247   NULL,                         /* la_get_symbol_name_matcher */
 248   iterate_over_symbols,
 249   default_search_name_hash,
 250   &default_varobj_ops,
 251   NULL,
 252   NULL,
 253   c_is_string_type_p,
 254   "{...}"                       /* la_struct_too_deep_ellipsis */
 255 };
 256
 257 /* Class representing the D language.  */
 258
 259 class d_language : public language_defn
 260 {
 261 public:
 262   d_language ()
 263     : language_defn (language_d, d_language_data)
 264   { /* Nothing.  */ }
 265 };
 266
 267 /* Single instance of the D language class.  */
 268
 269 static d_language d_language_defn;
 270
 271 /* Build all D language types for the specified architecture.  */
 272
 273 static void *
 274 build_d_types (struct gdbarch *gdbarch)
 275 {
 276   struct builtin_d_type *builtin_d_type
 277     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 278
 279   /* Basic types.  */
 280   builtin_d_type->builtin_void
 281     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 282   builtin_d_type->builtin_bool
 283     = arch_boolean_type (gdbarch, 8, 1, "bool");
 284   builtin_d_type->builtin_byte
 285     = arch_integer_type (gdbarch, 8, 0, "byte");
 286   builtin_d_type->builtin_ubyte
 287     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 288   builtin_d_type->builtin_short
 289     = arch_integer_type (gdbarch, 16, 0, "short");
 290   builtin_d_type->builtin_ushort
 291     = arch_integer_type (gdbarch, 16, 1, "ushort");
 292   builtin_d_type->builtin_int
 293     = arch_integer_type (gdbarch, 32, 0, "int");
 294   builtin_d_type->builtin_uint
 295     = arch_integer_type (gdbarch, 32, 1, "uint");
 296   builtin_d_type->builtin_long
 297     = arch_integer_type (gdbarch, 64, 0, "long");
 298   builtin_d_type->builtin_ulong
 299     = arch_integer_type (gdbarch, 64, 1, "ulong");
 300   builtin_d_type->builtin_cent
 301     = arch_integer_type (gdbarch, 128, 0, "cent");
 302   builtin_d_type->builtin_ucent
 303     = arch_integer_type (gdbarch, 128, 1, "ucent");
 304   builtin_d_type->builtin_float
 305     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 306                        "float", gdbarch_float_format (gdbarch));
 307   builtin_d_type->builtin_double
 308     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 309                        "double", gdbarch_double_format (gdbarch));
 310   builtin_d_type->builtin_real
 311     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 312                        "real", gdbarch_long_double_format (gdbarch));
 313
 314   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 315     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 316   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 317     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 318
 319   /* Imaginary and complex types.  */
 320   builtin_d_type->builtin_ifloat
 321     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 322                        "ifloat", gdbarch_float_format (gdbarch));
 323   builtin_d_type->builtin_idouble
 324     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 325                        "idouble", gdbarch_double_format (gdbarch));
 326   builtin_d_type->builtin_ireal
 327     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 328                        "ireal", gdbarch_long_double_format (gdbarch));
 329   builtin_d_type->builtin_cfloat
 330     = init_complex_type ("cfloat", builtin_d_type->builtin_float);
 331   builtin_d_type->builtin_cdouble
 332     = init_complex_type ("cdouble", builtin_d_type->builtin_double);
 333   builtin_d_type->builtin_creal
 334     = init_complex_type ("creal", builtin_d_type->builtin_real);
 335
 336   /* Character types.  */
 337   builtin_d_type->builtin_char
 338     = arch_character_type (gdbarch, 8, 1, "char");
 339   builtin_d_type->builtin_wchar
 340     = arch_character_type (gdbarch, 16, 1, "wchar");
 341   builtin_d_type->builtin_dchar
 342     = arch_character_type (gdbarch, 32, 1, "dchar");
 343
 344   return builtin_d_type;
 345 }
 346
 347 static struct gdbarch_data *d_type_data;
 348
 349 /* Return the D type table for the specified architecture.  */
 350
 351 const struct builtin_d_type *
 352 builtin_d_type (struct gdbarch *gdbarch)
 353 {
 354   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 355 }
 356
 357 void _initialize_d_language ();
 358 void
 359 _initialize_d_language ()
 360 {
 361   d_type_data = gdbarch_data_register_post_init (build_d_types);
 362 }