| 1 | /* Go language support routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2012-2015 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 | /* TODO: |
| 21 | - split stacks |
| 22 | - printing of native types |
| 23 | - goroutines |
| 24 | - lots more |
| 25 | - gccgo mangling needs redoing |
| 26 | It's too hard, for example, to know whether one is looking at a mangled |
| 27 | Go symbol or not, and their are ambiguities, e.g., the demangler may |
| 28 | get passed *any* symbol, including symbols from other languages |
| 29 | and including symbols that are already demangled. |
| 30 | One thought is to at least add an _G prefix. |
| 31 | - 6g mangling isn't supported yet |
| 32 | */ |
| 33 | |
| 34 | #include "defs.h" |
| 35 | #include "gdb_obstack.h" |
| 36 | #include "block.h" |
| 37 | #include "symtab.h" |
| 38 | #include "language.h" |
| 39 | #include "varobj.h" |
| 40 | #include "go-lang.h" |
| 41 | #include "c-lang.h" |
| 42 | #include "parser-defs.h" |
| 43 | |
| 44 | #include <ctype.h> |
| 45 | |
| 46 | /* The main function in the main package. */ |
| 47 | static const char GO_MAIN_MAIN[] = "main.main"; |
| 48 | |
| 49 | /* Function returning the special symbol name used by Go for the main |
| 50 | procedure in the main program if it is found in minimal symbol list. |
| 51 | This function tries to find minimal symbols so that it finds them even |
| 52 | if the program was compiled without debugging information. */ |
| 53 | |
| 54 | const char * |
| 55 | go_main_name (void) |
| 56 | { |
| 57 | struct bound_minimal_symbol msym; |
| 58 | |
| 59 | msym = lookup_minimal_symbol (GO_MAIN_MAIN, NULL, NULL); |
| 60 | if (msym.minsym != NULL) |
| 61 | return GO_MAIN_MAIN; |
| 62 | |
| 63 | /* No known entry procedure found, the main program is probably not Go. */ |
| 64 | return NULL; |
| 65 | } |
| 66 | |
| 67 | /* Return non-zero if TYPE is a gccgo string. |
| 68 | We assume CHECK_TYPEDEF has already been done. */ |
| 69 | |
| 70 | static int |
| 71 | gccgo_string_p (struct type *type) |
| 72 | { |
| 73 | /* gccgo strings don't necessarily have a name we can use. */ |
| 74 | |
| 75 | if (TYPE_NFIELDS (type) == 2) |
| 76 | { |
| 77 | struct type *type0 = TYPE_FIELD_TYPE (type, 0); |
| 78 | struct type *type1 = TYPE_FIELD_TYPE (type, 1); |
| 79 | |
| 80 | type0 = check_typedef (type0); |
| 81 | type1 = check_typedef (type1); |
| 82 | |
| 83 | if (TYPE_CODE (type0) == TYPE_CODE_PTR |
| 84 | && strcmp (TYPE_FIELD_NAME (type, 0), "__data") == 0 |
| 85 | && TYPE_CODE (type1) == TYPE_CODE_INT |
| 86 | && strcmp (TYPE_FIELD_NAME (type, 1), "__length") == 0) |
| 87 | { |
| 88 | struct type *target_type = TYPE_TARGET_TYPE (type0); |
| 89 | |
| 90 | target_type = check_typedef (target_type); |
| 91 | |
| 92 | if (TYPE_CODE (target_type) == TYPE_CODE_INT |
| 93 | && TYPE_LENGTH (target_type) == 1 |
| 94 | && strcmp (TYPE_NAME (target_type), "uint8") == 0) |
| 95 | return 1; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | /* Return non-zero if TYPE is a 6g string. |
| 103 | We assume CHECK_TYPEDEF has already been done. */ |
| 104 | |
| 105 | static int |
| 106 | sixg_string_p (struct type *type) |
| 107 | { |
| 108 | if (TYPE_NFIELDS (type) == 2 |
| 109 | && TYPE_TAG_NAME (type) != NULL |
| 110 | && strcmp (TYPE_TAG_NAME (type), "string") == 0) |
| 111 | return 1; |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | /* Classify the kind of Go object that TYPE is. |
| 117 | TYPE is a TYPE_CODE_STRUCT, used to represent a Go object. */ |
| 118 | |
| 119 | enum go_type |
| 120 | go_classify_struct_type (struct type *type) |
| 121 | { |
| 122 | type = check_typedef (type); |
| 123 | |
| 124 | /* Recognize strings as they're useful to be able to print without |
| 125 | pretty-printers. */ |
| 126 | if (gccgo_string_p (type) |
| 127 | || sixg_string_p (type)) |
| 128 | return GO_TYPE_STRING; |
| 129 | |
| 130 | return GO_TYPE_NONE; |
| 131 | } |
| 132 | |
| 133 | /* Subroutine of unpack_mangled_go_symbol to simplify it. |
| 134 | Given "[foo.]bar.baz", store "bar" in *PACKAGEP and "baz" in *OBJECTP. |
| 135 | We stomp on the last '.' to nul-terminate "bar". |
| 136 | The caller is responsible for memory management. */ |
| 137 | |
| 138 | static void |
| 139 | unpack_package_and_object (char *buf, |
| 140 | const char **packagep, const char **objectp) |
| 141 | { |
| 142 | char *last_dot; |
| 143 | |
| 144 | last_dot = strrchr (buf, '.'); |
| 145 | gdb_assert (last_dot != NULL); |
| 146 | *objectp = last_dot + 1; |
| 147 | *last_dot = '\0'; |
| 148 | last_dot = strrchr (buf, '.'); |
| 149 | if (last_dot != NULL) |
| 150 | *packagep = last_dot + 1; |
| 151 | else |
| 152 | *packagep = buf; |
| 153 | } |
| 154 | |
| 155 | /* Given a mangled Go symbol, find its package name, object name, and |
| 156 | method type (if present). |
| 157 | E.g., for "libgo_net.textproto.String.N33_libgo_net.textproto.ProtocolError" |
| 158 | *PACKAGEP = "textproto" |
| 159 | *OBJECTP = "String" |
| 160 | *METHOD_TYPE_PACKAGEP = "textproto" |
| 161 | *METHOD_TYPE_OBJECTP = "ProtocolError" |
| 162 | |
| 163 | Space for the resulting strings is malloc'd in one buffer. |
| 164 | PACKAGEP,OBJECTP,METHOD_TYPE* will (typically) point into this buffer. |
| 165 | [There are a few exceptions, but the caller is still responsible for |
| 166 | freeing the resulting pointer.] |
| 167 | A pointer to this buffer is returned, or NULL if symbol isn't a |
| 168 | mangled Go symbol. |
| 169 | The caller is responsible for freeing the result. |
| 170 | |
| 171 | *METHOD_TYPE_IS_POINTERP is set to a boolean indicating if |
| 172 | the method type is a pointer. |
| 173 | |
| 174 | There may be value in returning the outer container, |
| 175 | i.e., "net" in the above example, but for now it's not needed. |
| 176 | Plus it's currently not straightforward to compute, |
| 177 | it comes from -fgo-prefix, and there's no algorithm to compute it. |
| 178 | |
| 179 | If we ever need to unpack the method type, this routine should work |
| 180 | for that too. */ |
| 181 | |
| 182 | static char * |
| 183 | unpack_mangled_go_symbol (const char *mangled_name, |
| 184 | const char **packagep, |
| 185 | const char **objectp, |
| 186 | const char **method_type_packagep, |
| 187 | const char **method_type_objectp, |
| 188 | int *method_type_is_pointerp) |
| 189 | { |
| 190 | char *buf; |
| 191 | char *p; |
| 192 | int len = strlen (mangled_name); |
| 193 | /* Pointer to last digit in "N<digit(s)>_". */ |
| 194 | char *saw_digit; |
| 195 | /* Pointer to "N" if valid "N<digit(s)>_" found. */ |
| 196 | char *method_type; |
| 197 | /* Pointer to the first '.'. */ |
| 198 | char *first_dot; |
| 199 | /* Pointer to the last '.'. */ |
| 200 | char *last_dot; |
| 201 | /* Non-zero if we saw a pointer indicator. */ |
| 202 | int saw_pointer; |
| 203 | |
| 204 | *packagep = *objectp = NULL; |
| 205 | *method_type_packagep = *method_type_objectp = NULL; |
| 206 | *method_type_is_pointerp = 0; |
| 207 | |
| 208 | /* main.init is mangled specially. */ |
| 209 | if (strcmp (mangled_name, "__go_init_main") == 0) |
| 210 | { |
| 211 | char *package = xstrdup ("main"); |
| 212 | |
| 213 | *packagep = package; |
| 214 | *objectp = "init"; |
| 215 | return package; |
| 216 | } |
| 217 | |
| 218 | /* main.main is mangled specially (missing prefix). */ |
| 219 | if (strcmp (mangled_name, "main.main") == 0) |
| 220 | { |
| 221 | char *package = xstrdup ("main"); |
| 222 | |
| 223 | *packagep = package; |
| 224 | *objectp = "main"; |
| 225 | return package; |
| 226 | } |
| 227 | |
| 228 | /* We may get passed, e.g., "main.T.Foo", which is *not* mangled. |
| 229 | Alas it looks exactly like "prefix.package.object." |
| 230 | To cope for now we only recognize the following prefixes: |
| 231 | |
| 232 | go: the default |
| 233 | libgo_.*: used by gccgo's runtime |
| 234 | |
| 235 | Thus we don't support -fgo-prefix (except as used by the runtime). */ |
| 236 | if (!startswith (mangled_name, "go.") |
| 237 | && !startswith (mangled_name, "libgo_")) |
| 238 | return NULL; |
| 239 | |
| 240 | /* Quick check for whether a search may be fruitful. */ |
| 241 | /* Ignore anything with @plt, etc. in it. */ |
| 242 | if (strchr (mangled_name, '@') != NULL) |
| 243 | return NULL; |
| 244 | /* It must have at least two dots. */ |
| 245 | first_dot = strchr (mangled_name, '.'); |
| 246 | if (first_dot == NULL) |
| 247 | return NULL; |
| 248 | /* Treat "foo.bar" as unmangled. It can collide with lots of other |
| 249 | languages and it's not clear what the consequences are. |
| 250 | And except for main.main, all gccgo symbols are at least |
| 251 | prefix.package.object. */ |
| 252 | last_dot = strrchr (mangled_name, '.'); |
| 253 | if (last_dot == first_dot) |
| 254 | return NULL; |
| 255 | |
| 256 | /* More quick checks. */ |
| 257 | if (last_dot[1] == '\0' /* foo. */ |
| 258 | || last_dot[-1] == '.') /* foo..bar */ |
| 259 | return NULL; |
| 260 | |
| 261 | /* At this point we've decided we have a mangled Go symbol. */ |
| 262 | |
| 263 | buf = xstrdup (mangled_name); |
| 264 | |
| 265 | /* Search backwards looking for "N<digit(s)>". */ |
| 266 | p = buf + len; |
| 267 | saw_digit = method_type = NULL; |
| 268 | saw_pointer = 0; |
| 269 | while (p > buf) |
| 270 | { |
| 271 | int current = *(const unsigned char *) --p; |
| 272 | int current_is_digit = isdigit (current); |
| 273 | |
| 274 | if (saw_digit) |
| 275 | { |
| 276 | if (current_is_digit) |
| 277 | continue; |
| 278 | if (current == 'N' |
| 279 | && ((p > buf && p[-1] == '.') |
| 280 | || (p > buf + 1 && p[-1] == 'p' && p[-2] == '.'))) |
| 281 | { |
| 282 | if (atoi (p + 1) == strlen (saw_digit + 2)) |
| 283 | { |
| 284 | if (p[-1] == '.') |
| 285 | method_type = p - 1; |
| 286 | else |
| 287 | { |
| 288 | gdb_assert (p[-1] == 'p'); |
| 289 | saw_pointer = 1; |
| 290 | method_type = p - 2; |
| 291 | } |
| 292 | break; |
| 293 | } |
| 294 | } |
| 295 | /* Not what we're looking for, reset and keep looking. */ |
| 296 | saw_digit = NULL; |
| 297 | saw_pointer = 0; |
| 298 | continue; |
| 299 | } |
| 300 | if (current_is_digit && p[1] == '_') |
| 301 | { |
| 302 | /* Possible start of method "this" [sic] type. */ |
| 303 | saw_digit = p; |
| 304 | continue; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | if (method_type != NULL |
| 309 | /* Ensure not something like "..foo". */ |
| 310 | && (method_type > buf && method_type[-1] != '.')) |
| 311 | { |
| 312 | unpack_package_and_object (saw_digit + 2, |
| 313 | method_type_packagep, method_type_objectp); |
| 314 | *method_type = '\0'; |
| 315 | *method_type_is_pointerp = saw_pointer; |
| 316 | } |
| 317 | |
| 318 | unpack_package_and_object (buf, packagep, objectp); |
| 319 | return buf; |
| 320 | } |
| 321 | |
| 322 | /* Implements the la_demangle language_defn routine for language Go. |
| 323 | |
| 324 | N.B. This may get passed *any* symbol, including symbols from other |
| 325 | languages and including symbols that are already demangled. |
| 326 | Both of these situations are kinda unfortunate, but that's how things |
| 327 | are today. |
| 328 | |
| 329 | N.B. This currently only supports gccgo's mangling. |
| 330 | |
| 331 | N.B. gccgo's mangling needs, I think, changing. |
| 332 | This demangler can't work in all situations, |
| 333 | thus not too much effort is currently put into it. */ |
| 334 | |
| 335 | char * |
| 336 | go_demangle (const char *mangled_name, int options) |
| 337 | { |
| 338 | struct obstack tempbuf; |
| 339 | char *result; |
| 340 | char *name_buf; |
| 341 | const char *package_name; |
| 342 | const char *object_name; |
| 343 | const char *method_type_package_name; |
| 344 | const char *method_type_object_name; |
| 345 | int method_type_is_pointer; |
| 346 | |
| 347 | if (mangled_name == NULL) |
| 348 | return NULL; |
| 349 | |
| 350 | name_buf = unpack_mangled_go_symbol (mangled_name, |
| 351 | &package_name, &object_name, |
| 352 | &method_type_package_name, |
| 353 | &method_type_object_name, |
| 354 | &method_type_is_pointer); |
| 355 | if (name_buf == NULL) |
| 356 | return NULL; |
| 357 | |
| 358 | obstack_init (&tempbuf); |
| 359 | |
| 360 | /* Print methods as they appear in "method expressions". */ |
| 361 | if (method_type_package_name != NULL) |
| 362 | { |
| 363 | /* FIXME: Seems like we should include package_name here somewhere. */ |
| 364 | if (method_type_is_pointer) |
| 365 | obstack_grow_str (&tempbuf, "(*"); |
| 366 | obstack_grow_str (&tempbuf, method_type_package_name); |
| 367 | obstack_grow_str (&tempbuf, "."); |
| 368 | obstack_grow_str (&tempbuf, method_type_object_name); |
| 369 | if (method_type_is_pointer) |
| 370 | obstack_grow_str (&tempbuf, ")"); |
| 371 | obstack_grow_str (&tempbuf, "."); |
| 372 | obstack_grow_str (&tempbuf, object_name); |
| 373 | } |
| 374 | else |
| 375 | { |
| 376 | obstack_grow_str (&tempbuf, package_name); |
| 377 | obstack_grow_str (&tempbuf, "."); |
| 378 | obstack_grow_str (&tempbuf, object_name); |
| 379 | } |
| 380 | obstack_grow_str0 (&tempbuf, ""); |
| 381 | |
| 382 | result = xstrdup ((const char *) obstack_finish (&tempbuf)); |
| 383 | obstack_free (&tempbuf, NULL); |
| 384 | xfree (name_buf); |
| 385 | return result; |
| 386 | } |
| 387 | |
| 388 | /* Given a Go symbol, return its package or NULL if unknown. |
| 389 | Space for the result is malloc'd, caller must free. */ |
| 390 | |
| 391 | char * |
| 392 | go_symbol_package_name (const struct symbol *sym) |
| 393 | { |
| 394 | const char *mangled_name = SYMBOL_LINKAGE_NAME (sym); |
| 395 | const char *package_name; |
| 396 | const char *object_name; |
| 397 | const char *method_type_package_name; |
| 398 | const char *method_type_object_name; |
| 399 | int method_type_is_pointer; |
| 400 | char *name_buf; |
| 401 | char *result; |
| 402 | |
| 403 | gdb_assert (SYMBOL_LANGUAGE (sym) == language_go); |
| 404 | name_buf = unpack_mangled_go_symbol (mangled_name, |
| 405 | &package_name, &object_name, |
| 406 | &method_type_package_name, |
| 407 | &method_type_object_name, |
| 408 | &method_type_is_pointer); |
| 409 | /* Some Go symbols don't have mangled form we interpret (yet). */ |
| 410 | if (name_buf == NULL) |
| 411 | return NULL; |
| 412 | result = xstrdup (package_name); |
| 413 | xfree (name_buf); |
| 414 | return result; |
| 415 | } |
| 416 | |
| 417 | /* Return the package that BLOCK is in, or NULL if there isn't one. |
| 418 | Space for the result is malloc'd, caller must free. */ |
| 419 | |
| 420 | char * |
| 421 | go_block_package_name (const struct block *block) |
| 422 | { |
| 423 | while (block != NULL) |
| 424 | { |
| 425 | struct symbol *function = BLOCK_FUNCTION (block); |
| 426 | |
| 427 | if (function != NULL) |
| 428 | { |
| 429 | char *package_name = go_symbol_package_name (function); |
| 430 | |
| 431 | if (package_name != NULL) |
| 432 | return package_name; |
| 433 | |
| 434 | /* Stop looking if we find a function without a package name. |
| 435 | We're most likely outside of Go and thus the concept of the |
| 436 | "current" package is gone. */ |
| 437 | return NULL; |
| 438 | } |
| 439 | |
| 440 | block = BLOCK_SUPERBLOCK (block); |
| 441 | } |
| 442 | |
| 443 | return NULL; |
| 444 | } |
| 445 | |
| 446 | /* Table mapping opcodes into strings for printing operators |
| 447 | and precedences of the operators. |
| 448 | TODO(dje): &^ ? */ |
| 449 | |
| 450 | static const struct op_print go_op_print_tab[] = |
| 451 | { |
| 452 | {",", BINOP_COMMA, PREC_COMMA, 0}, |
| 453 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 454 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 455 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 456 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| 457 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| 458 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| 459 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 460 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 461 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| 462 | {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| 463 | {">", BINOP_GTR, PREC_ORDER, 0}, |
| 464 | {"<", BINOP_LESS, PREC_ORDER, 0}, |
| 465 | {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| 466 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| 467 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 468 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 469 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 470 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 471 | {"%", BINOP_REM, PREC_MUL, 0}, |
| 472 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 473 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 474 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 475 | {"^", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| 476 | {"*", UNOP_IND, PREC_PREFIX, 0}, |
| 477 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| 478 | {"unsafe.Sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| 479 | {"++", UNOP_POSTINCREMENT, PREC_SUFFIX, 0}, |
| 480 | {"--", UNOP_POSTDECREMENT, PREC_SUFFIX, 0}, |
| 481 | {NULL, OP_NULL, PREC_SUFFIX, 0} |
| 482 | }; |
| 483 | |
| 484 | enum go_primitive_types { |
| 485 | go_primitive_type_void, |
| 486 | go_primitive_type_char, |
| 487 | go_primitive_type_bool, |
| 488 | go_primitive_type_int, |
| 489 | go_primitive_type_uint, |
| 490 | go_primitive_type_uintptr, |
| 491 | go_primitive_type_int8, |
| 492 | go_primitive_type_int16, |
| 493 | go_primitive_type_int32, |
| 494 | go_primitive_type_int64, |
| 495 | go_primitive_type_uint8, |
| 496 | go_primitive_type_uint16, |
| 497 | go_primitive_type_uint32, |
| 498 | go_primitive_type_uint64, |
| 499 | go_primitive_type_float32, |
| 500 | go_primitive_type_float64, |
| 501 | go_primitive_type_complex64, |
| 502 | go_primitive_type_complex128, |
| 503 | nr_go_primitive_types |
| 504 | }; |
| 505 | |
| 506 | static void |
| 507 | go_language_arch_info (struct gdbarch *gdbarch, |
| 508 | struct language_arch_info *lai) |
| 509 | { |
| 510 | const struct builtin_go_type *builtin = builtin_go_type (gdbarch); |
| 511 | |
| 512 | lai->string_char_type = builtin->builtin_char; |
| 513 | |
| 514 | lai->primitive_type_vector |
| 515 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_go_primitive_types + 1, |
| 516 | struct type *); |
| 517 | |
| 518 | lai->primitive_type_vector [go_primitive_type_void] |
| 519 | = builtin->builtin_void; |
| 520 | lai->primitive_type_vector [go_primitive_type_char] |
| 521 | = builtin->builtin_char; |
| 522 | lai->primitive_type_vector [go_primitive_type_bool] |
| 523 | = builtin->builtin_bool; |
| 524 | lai->primitive_type_vector [go_primitive_type_int] |
| 525 | = builtin->builtin_int; |
| 526 | lai->primitive_type_vector [go_primitive_type_uint] |
| 527 | = builtin->builtin_uint; |
| 528 | lai->primitive_type_vector [go_primitive_type_uintptr] |
| 529 | = builtin->builtin_uintptr; |
| 530 | lai->primitive_type_vector [go_primitive_type_int8] |
| 531 | = builtin->builtin_int8; |
| 532 | lai->primitive_type_vector [go_primitive_type_int16] |
| 533 | = builtin->builtin_int16; |
| 534 | lai->primitive_type_vector [go_primitive_type_int32] |
| 535 | = builtin->builtin_int32; |
| 536 | lai->primitive_type_vector [go_primitive_type_int64] |
| 537 | = builtin->builtin_int64; |
| 538 | lai->primitive_type_vector [go_primitive_type_uint8] |
| 539 | = builtin->builtin_uint8; |
| 540 | lai->primitive_type_vector [go_primitive_type_uint16] |
| 541 | = builtin->builtin_uint16; |
| 542 | lai->primitive_type_vector [go_primitive_type_uint32] |
| 543 | = builtin->builtin_uint32; |
| 544 | lai->primitive_type_vector [go_primitive_type_uint64] |
| 545 | = builtin->builtin_uint64; |
| 546 | lai->primitive_type_vector [go_primitive_type_float32] |
| 547 | = builtin->builtin_float32; |
| 548 | lai->primitive_type_vector [go_primitive_type_float64] |
| 549 | = builtin->builtin_float64; |
| 550 | lai->primitive_type_vector [go_primitive_type_complex64] |
| 551 | = builtin->builtin_complex64; |
| 552 | lai->primitive_type_vector [go_primitive_type_complex128] |
| 553 | = builtin->builtin_complex128; |
| 554 | |
| 555 | lai->bool_type_symbol = "bool"; |
| 556 | lai->bool_type_default = builtin->builtin_bool; |
| 557 | } |
| 558 | |
| 559 | static const struct language_defn go_language_defn = |
| 560 | { |
| 561 | "go", |
| 562 | "Go", |
| 563 | language_go, |
| 564 | range_check_off, |
| 565 | case_sensitive_on, |
| 566 | array_row_major, |
| 567 | macro_expansion_no, |
| 568 | &exp_descriptor_c, |
| 569 | go_parse, |
| 570 | go_error, |
| 571 | null_post_parser, |
| 572 | c_printchar, /* Print a character constant. */ |
| 573 | c_printstr, /* Function to print string constant. */ |
| 574 | c_emit_char, /* Print a single char. */ |
| 575 | go_print_type, /* Print a type using appropriate syntax. */ |
| 576 | c_print_typedef, /* Print a typedef using appropriate |
| 577 | syntax. */ |
| 578 | go_val_print, /* Print a value using appropriate syntax. */ |
| 579 | c_value_print, /* Print a top-level value. */ |
| 580 | default_read_var_value, /* la_read_var_value */ |
| 581 | NULL, /* Language specific skip_trampoline. */ |
| 582 | NULL, /* name_of_this */ |
| 583 | basic_lookup_symbol_nonlocal, |
| 584 | basic_lookup_transparent_type, |
| 585 | go_demangle, /* Language specific symbol demangler. */ |
| 586 | NULL, /* Language specific |
| 587 | class_name_from_physname. */ |
| 588 | go_op_print_tab, /* Expression operators for printing. */ |
| 589 | 1, /* C-style arrays. */ |
| 590 | 0, /* String lower bound. */ |
| 591 | default_word_break_characters, |
| 592 | default_make_symbol_completion_list, |
| 593 | go_language_arch_info, |
| 594 | default_print_array_index, |
| 595 | default_pass_by_reference, |
| 596 | c_get_string, |
| 597 | NULL, |
| 598 | iterate_over_symbols, |
| 599 | &default_varobj_ops, |
| 600 | NULL, |
| 601 | NULL, |
| 602 | LANG_MAGIC |
| 603 | }; |
| 604 | |
| 605 | static void * |
| 606 | build_go_types (struct gdbarch *gdbarch) |
| 607 | { |
| 608 | struct builtin_go_type *builtin_go_type |
| 609 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_go_type); |
| 610 | |
| 611 | builtin_go_type->builtin_void |
| 612 | = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); |
| 613 | builtin_go_type->builtin_char |
| 614 | = arch_character_type (gdbarch, 8, 1, "char"); |
| 615 | builtin_go_type->builtin_bool |
| 616 | = arch_boolean_type (gdbarch, 8, 0, "bool"); |
| 617 | builtin_go_type->builtin_int |
| 618 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, "int"); |
| 619 | builtin_go_type->builtin_uint |
| 620 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 1, "uint"); |
| 621 | builtin_go_type->builtin_uintptr |
| 622 | = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch), 1, "uintptr"); |
| 623 | builtin_go_type->builtin_int8 |
| 624 | = arch_integer_type (gdbarch, 8, 0, "int8"); |
| 625 | builtin_go_type->builtin_int16 |
| 626 | = arch_integer_type (gdbarch, 16, 0, "int16"); |
| 627 | builtin_go_type->builtin_int32 |
| 628 | = arch_integer_type (gdbarch, 32, 0, "int32"); |
| 629 | builtin_go_type->builtin_int64 |
| 630 | = arch_integer_type (gdbarch, 64, 0, "int64"); |
| 631 | builtin_go_type->builtin_uint8 |
| 632 | = arch_integer_type (gdbarch, 8, 1, "uint8"); |
| 633 | builtin_go_type->builtin_uint16 |
| 634 | = arch_integer_type (gdbarch, 16, 1, "uint16"); |
| 635 | builtin_go_type->builtin_uint32 |
| 636 | = arch_integer_type (gdbarch, 32, 1, "uint32"); |
| 637 | builtin_go_type->builtin_uint64 |
| 638 | = arch_integer_type (gdbarch, 64, 1, "uint64"); |
| 639 | builtin_go_type->builtin_float32 |
| 640 | = arch_float_type (gdbarch, 32, "float32", NULL); |
| 641 | builtin_go_type->builtin_float64 |
| 642 | = arch_float_type (gdbarch, 64, "float64", NULL); |
| 643 | builtin_go_type->builtin_complex64 |
| 644 | = arch_complex_type (gdbarch, "complex64", |
| 645 | builtin_go_type->builtin_float32); |
| 646 | builtin_go_type->builtin_complex128 |
| 647 | = arch_complex_type (gdbarch, "complex128", |
| 648 | builtin_go_type->builtin_float64); |
| 649 | |
| 650 | return builtin_go_type; |
| 651 | } |
| 652 | |
| 653 | static struct gdbarch_data *go_type_data; |
| 654 | |
| 655 | const struct builtin_go_type * |
| 656 | builtin_go_type (struct gdbarch *gdbarch) |
| 657 | { |
| 658 | return (const struct builtin_go_type *) gdbarch_data (gdbarch, go_type_data); |
| 659 | } |
| 660 | |
| 661 | extern initialize_file_ftype _initialize_go_language; |
| 662 | |
| 663 | void |
| 664 | _initialize_go_language (void) |
| 665 | { |
| 666 | go_type_data = gdbarch_data_register_post_init (build_go_types); |
| 667 | |
| 668 | add_language (&go_language_defn); |
| 669 | } |