gdb/d-lang.c

   1 /* D language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 2005-2019 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 extern const struct language_defn d_language_defn =
 209 {
 210   "d",
 211   "D",
 212   language_d,
 213   range_check_off,
 214   case_sensitive_on,
 215   array_row_major,
 216   macro_expansion_no,
 217   d_extensions,
 218   &exp_descriptor_c,
 219   d_parse,
 220   null_post_parser,
 221   c_printchar,                  /* Print a character constant.  */
 222   c_printstr,                   /* Function to print string constant.  */
 223   c_emit_char,                  /* Print a single char.  */
 224   c_print_type,                 /* Print a type using appropriate syntax.  */
 225   c_print_typedef,              /* Print a typedef using appropriate
 226                                    syntax.  */
 227   d_val_print,                  /* Print a value using appropriate syntax.  */
 228   c_value_print,                /* Print a top-level value.  */
 229   default_read_var_value,       /* la_read_var_value */
 230   NULL,                         /* Language specific skip_trampoline.  */
 231   "this",
 232   false,                        /* la_store_sym_names_in_linkage_form_p */
 233   d_lookup_symbol_nonlocal,
 234   basic_lookup_transparent_type,
 235   d_demangle,                   /* Language specific symbol demangler.  */
 236   d_sniff_from_mangled_name,
 237   NULL,                         /* Language specific
 238                                    class_name_from_physname.  */
 239   d_op_print_tab,               /* Expression operators for printing.  */
 240   1,                            /* C-style arrays.  */
 241   0,                            /* String lower bound.  */
 242   default_word_break_characters,
 243   default_collect_symbol_completion_matches,
 244   d_language_arch_info,
 245   default_print_array_index,
 246   default_pass_by_reference,
 247   c_get_string,
 248   c_watch_location_expression,
 249   NULL,                         /* la_get_symbol_name_matcher */
 250   iterate_over_symbols,
 251   default_search_name_hash,
 252   &default_varobj_ops,
 253   NULL,
 254   NULL,
 255   c_is_string_type_p,
 256   "{...}"                       /* la_struct_too_deep_ellipsis */
 257 };
 258
 259 /* Build all D language types for the specified architecture.  */
 260
 261 static void *
 262 build_d_types (struct gdbarch *gdbarch)
 263 {
 264   struct builtin_d_type *builtin_d_type
 265     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_d_type);
 266
 267   /* Basic types.  */
 268   builtin_d_type->builtin_void
 269     = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 270   builtin_d_type->builtin_bool
 271     = arch_boolean_type (gdbarch, 8, 1, "bool");
 272   builtin_d_type->builtin_byte
 273     = arch_integer_type (gdbarch, 8, 0, "byte");
 274   builtin_d_type->builtin_ubyte
 275     = arch_integer_type (gdbarch, 8, 1, "ubyte");
 276   builtin_d_type->builtin_short
 277     = arch_integer_type (gdbarch, 16, 0, "short");
 278   builtin_d_type->builtin_ushort
 279     = arch_integer_type (gdbarch, 16, 1, "ushort");
 280   builtin_d_type->builtin_int
 281     = arch_integer_type (gdbarch, 32, 0, "int");
 282   builtin_d_type->builtin_uint
 283     = arch_integer_type (gdbarch, 32, 1, "uint");
 284   builtin_d_type->builtin_long
 285     = arch_integer_type (gdbarch, 64, 0, "long");
 286   builtin_d_type->builtin_ulong
 287     = arch_integer_type (gdbarch, 64, 1, "ulong");
 288   builtin_d_type->builtin_cent
 289     = arch_integer_type (gdbarch, 128, 0, "cent");
 290   builtin_d_type->builtin_ucent
 291     = arch_integer_type (gdbarch, 128, 1, "ucent");
 292   builtin_d_type->builtin_float
 293     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 294                        "float", gdbarch_float_format (gdbarch));
 295   builtin_d_type->builtin_double
 296     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 297                        "double", gdbarch_double_format (gdbarch));
 298   builtin_d_type->builtin_real
 299     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 300                        "real", gdbarch_long_double_format (gdbarch));
 301
 302   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_byte)
 303     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 304   TYPE_INSTANCE_FLAGS (builtin_d_type->builtin_ubyte)
 305     |= TYPE_INSTANCE_FLAG_NOTTEXT;
 306
 307   /* Imaginary and complex types.  */
 308   builtin_d_type->builtin_ifloat
 309     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 310                        "ifloat", gdbarch_float_format (gdbarch));
 311   builtin_d_type->builtin_idouble
 312     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 313                        "idouble", gdbarch_double_format (gdbarch));
 314   builtin_d_type->builtin_ireal
 315     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 316                        "ireal", gdbarch_long_double_format (gdbarch));
 317   builtin_d_type->builtin_cfloat
 318     = arch_complex_type (gdbarch, "cfloat",
 319                          builtin_d_type->builtin_float);
 320   builtin_d_type->builtin_cdouble
 321     = arch_complex_type (gdbarch, "cdouble",
 322                          builtin_d_type->builtin_double);
 323   builtin_d_type->builtin_creal
 324     = arch_complex_type (gdbarch, "creal",
 325                          builtin_d_type->builtin_real);
 326
 327   /* Character types.  */
 328   builtin_d_type->builtin_char
 329     = arch_character_type (gdbarch, 8, 1, "char");
 330   builtin_d_type->builtin_wchar
 331     = arch_character_type (gdbarch, 16, 1, "wchar");
 332   builtin_d_type->builtin_dchar
 333     = arch_character_type (gdbarch, 32, 1, "dchar");
 334
 335   return builtin_d_type;
 336 }
 337
 338 static struct gdbarch_data *d_type_data;
 339
 340 /* Return the D type table for the specified architecture.  */
 341
 342 const struct builtin_d_type *
 343 builtin_d_type (struct gdbarch *gdbarch)
 344 {
 345   return (const struct builtin_d_type *) gdbarch_data (gdbarch, d_type_data);
 346 }
 347
 348 void
 349 _initialize_d_language (void)
 350 {
 351   d_type_data = gdbarch_data_register_post_init (build_d_types);
 352 }