1 /* C language support routines for GDB, the GNU debugger.
3 Copyright (C) 1992-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
23 #include "expression.h"
24 #include "parser-defs.h"
28 #include "c-support.h"
30 #include "macroscope.h"
34 #include "cp-support.h"
35 #include "gdb_obstack.h"
39 /* Given a C string type, STR_TYPE, return the corresponding target
40 character set name. */
43 charset_for_string_type (c_string_type str_type, struct gdbarch *gdbarch)
45 switch (str_type & ~C_CHAR)
48 return target_charset (gdbarch);
50 return target_wide_charset (gdbarch);
52 /* FIXME: UTF-16 is not always correct. */
53 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
58 /* FIXME: UTF-32 is not always correct. */
59 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
64 internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
67 /* Classify ELTTYPE according to what kind of character it is. Return
68 the enum constant representing the character type. Also set
69 *ENCODING to the name of the character set to use when converting
70 characters of this type in target BYTE_ORDER to the host character
74 classify_type (struct type *elttype, struct gdbarch *gdbarch,
75 const char **encoding)
79 /* We loop because ELTTYPE may be a typedef, and we want to
80 successively peel each typedef until we reach a type we
81 understand. We don't use CHECK_TYPEDEF because that will strip
82 all typedefs at once -- but in C, wchar_t is itself a typedef, so
83 that would do the wrong thing. */
86 const char *name = TYPE_NAME (elttype);
88 if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
94 if (!strcmp (name, "wchar_t"))
100 if (!strcmp (name, "char16_t"))
106 if (!strcmp (name, "char32_t"))
112 if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF)
115 /* Call for side effects. */
116 check_typedef (elttype);
118 if (TYPE_TARGET_TYPE (elttype))
119 elttype = TYPE_TARGET_TYPE (elttype);
122 /* Perhaps check_typedef did not update the target type. In
123 this case, force the lookup again and hope it works out.
124 It never will for C, but it might for C++. */
125 elttype = check_typedef (elttype);
134 *encoding = charset_for_string_type (result, gdbarch);
139 /* Print the character C on STREAM as part of the contents of a
140 literal string whose delimiter is QUOTER. Note that that format
141 for printing characters and strings is language specific. */
144 c_emit_char (int c, struct type *type,
145 struct ui_file *stream, int quoter)
147 const char *encoding;
149 classify_type (type, get_type_arch (type), &encoding);
150 generic_emit_char (c, type, stream, quoter, encoding);
154 c_printchar (int c, struct type *type, struct ui_file *stream)
156 c_string_type str_type;
158 str_type = classify_type (type, get_type_arch (type), NULL);
164 fputc_filtered ('L', stream);
167 fputc_filtered ('u', stream);
170 fputc_filtered ('U', stream);
174 fputc_filtered ('\'', stream);
175 LA_EMIT_CHAR (c, type, stream, '\'');
176 fputc_filtered ('\'', stream);
179 /* Print the character string STRING, printing at most LENGTH
180 characters. LENGTH is -1 if the string is nul terminated. Each
181 character is WIDTH bytes long. Printing stops early if the number
182 hits print_max; repeat counts are printed as appropriate. Print
183 ellipses at the end if we had to stop before printing LENGTH
184 characters, or if FORCE_ELLIPSES. */
187 c_printstr (struct ui_file *stream, struct type *type,
188 const gdb_byte *string, unsigned int length,
189 const char *user_encoding, int force_ellipses,
190 const struct value_print_options *options)
192 c_string_type str_type;
193 const char *type_encoding;
194 const char *encoding;
196 str_type = (classify_type (type, get_type_arch (type), &type_encoding)
203 fputs_filtered ("L", stream);
206 fputs_filtered ("u", stream);
209 fputs_filtered ("U", stream);
213 encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding;
215 generic_printstr (stream, type, string, length, encoding, force_ellipses,
219 /* Obtain a C string from the inferior storing it in a newly allocated
220 buffer in BUFFER, which should be freed by the caller. If the in-
221 and out-parameter *LENGTH is specified at -1, the string is read
222 until a null character of the appropriate width is found, otherwise
223 the string is read to the length of characters specified. The size
224 of a character is determined by the length of the target type of
225 the pointer or array.
227 If VALUE is an array with a known length, and *LENGTH is -1,
228 the function will not read past the end of the array. However, any
229 declared size of the array is ignored if *LENGTH > 0.
231 On completion, *LENGTH will be set to the size of the string read in
232 characters. (If a length of -1 is specified, the length returned
233 will not include the null character). CHARSET is always set to the
237 c_get_string (struct value *value, gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
238 int *length, struct type **char_type,
239 const char **charset)
242 unsigned int fetchlimit;
243 struct type *type = check_typedef (value_type (value));
244 struct type *element_type = TYPE_TARGET_TYPE (type);
245 int req_length = *length;
246 enum bfd_endian byte_order
247 = gdbarch_byte_order (get_type_arch (type));
249 if (element_type == NULL)
252 if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
254 /* If we know the size of the array, we can use it as a limit on
255 the number of characters to be fetched. */
256 if (TYPE_NFIELDS (type) == 1
257 && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE)
259 LONGEST low_bound, high_bound;
261 get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
262 &low_bound, &high_bound);
263 fetchlimit = high_bound - low_bound + 1;
266 fetchlimit = UINT_MAX;
268 else if (TYPE_CODE (type) == TYPE_CODE_PTR)
269 fetchlimit = UINT_MAX;
271 /* We work only with arrays and pointers. */
274 if (! c_textual_element_type (element_type, 0))
276 classify_type (element_type, get_type_arch (element_type), charset);
277 width = TYPE_LENGTH (element_type);
279 /* If the string lives in GDB's memory instead of the inferior's,
280 then we just need to copy it to BUFFER. Also, since such strings
281 are arrays with known size, FETCHLIMIT will hold the size of the
283 if ((VALUE_LVAL (value) == not_lval
284 || VALUE_LVAL (value) == lval_internalvar)
285 && fetchlimit != UINT_MAX)
288 const gdb_byte *contents = value_contents (value);
290 /* If a length is specified, use that. */
294 /* Otherwise, look for a null character. */
295 for (i = 0; i < fetchlimit; i++)
296 if (extract_unsigned_integer (contents + i * width,
297 width, byte_order) == 0)
300 /* I is now either a user-defined length, the number of non-null
301 characters, or FETCHLIMIT. */
303 buffer->reset ((gdb_byte *) xmalloc (*length));
304 memcpy (buffer->get (), contents, *length);
309 CORE_ADDR addr = value_as_address (value);
311 /* Prior to the fix for PR 16196 read_string would ignore fetchlimit
312 if length > 0. The old "broken" behaviour is the behaviour we want:
313 The caller may want to fetch 100 bytes from a variable length array
314 implemented using the common idiom of having an array of length 1 at
315 the end of a struct. In this case we want to ignore the declared
316 size of the array. However, it's counterintuitive to implement that
317 behaviour in read_string: what does fetchlimit otherwise mean if
318 length > 0. Therefore we implement the behaviour we want here:
319 If *length > 0, don't specify a fetchlimit. This preserves the
320 previous behaviour. We could move this check above where we know
321 whether the array is declared with a fixed size, but we only want
322 to apply this behaviour when calling read_string. PR 16286. */
324 fetchlimit = UINT_MAX;
326 err = read_string (addr, *length, width, fetchlimit,
327 byte_order, buffer, length);
329 memory_error (TARGET_XFER_E_IO, addr);
332 /* If the LENGTH is specified at -1, we want to return the string
333 length up to the terminating null character. If an actual length
334 was specified, we want to return the length of exactly what was
336 if (req_length == -1)
337 /* If the last character is null, subtract it from LENGTH. */
339 && extract_unsigned_integer (buffer->get () + *length - width,
340 width, byte_order) == 0)
343 /* The read_string function will return the number of bytes read.
344 If length returned from read_string was > 0, return the number of
345 characters read by dividing the number of bytes by width. */
347 *length = *length / width;
349 *char_type = element_type;
355 std::string type_str = type_to_string (type);
356 if (!type_str.empty ())
358 error (_("Trying to read string with inappropriate type `%s'."),
362 error (_("Trying to read string with inappropriate type."));
367 /* Evaluating C and C++ expressions. */
369 /* Convert a UCN. The digits of the UCN start at P and extend no
370 farther than LIMIT. DEST_CHARSET is the name of the character set
371 into which the UCN should be converted. The results are written to
372 OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8.
373 Returns a pointer to just after the final digit of the UCN. */
376 convert_ucn (char *p, char *limit, const char *dest_charset,
377 struct obstack *output, int length)
379 unsigned long result = 0;
383 for (i = 0; i < length && p < limit && ISXDIGIT (*p); ++i, ++p)
384 result = (result << 4) + host_hex_value (*p);
386 for (i = 3; i >= 0; --i)
388 data[i] = result & 0xff;
392 convert_between_encodings ("UTF-32BE", dest_charset, data,
393 4, 4, output, translit_none);
398 /* Emit a character, VALUE, which was specified numerically, to
399 OUTPUT. TYPE is the target character type. */
402 emit_numeric_character (struct type *type, unsigned long value,
403 struct obstack *output)
407 buffer = (gdb_byte *) alloca (TYPE_LENGTH (type));
408 pack_long (buffer, type, value);
409 obstack_grow (output, buffer, TYPE_LENGTH (type));
412 /* Convert an octal escape sequence. TYPE is the target character
413 type. The digits of the escape sequence begin at P and extend no
414 farther than LIMIT. The result is written to OUTPUT. Returns a
415 pointer to just after the final digit of the escape sequence. */
418 convert_octal (struct type *type, char *p,
419 char *limit, struct obstack *output)
422 unsigned long value = 0;
425 i < 3 && p < limit && ISDIGIT (*p) && *p != '8' && *p != '9';
428 value = 8 * value + host_hex_value (*p);
432 emit_numeric_character (type, value, output);
437 /* Convert a hex escape sequence. TYPE is the target character type.
438 The digits of the escape sequence begin at P and extend no farther
439 than LIMIT. The result is written to OUTPUT. Returns a pointer to
440 just after the final digit of the escape sequence. */
443 convert_hex (struct type *type, char *p,
444 char *limit, struct obstack *output)
446 unsigned long value = 0;
448 while (p < limit && ISXDIGIT (*p))
450 value = 16 * value + host_hex_value (*p);
454 emit_numeric_character (type, value, output);
463 error (_("Malformed escape sequence")); \
466 /* Convert an escape sequence to a target format. TYPE is the target
467 character type to use, and DEST_CHARSET is the name of the target
468 character set. The backslash of the escape sequence is at *P, and
469 the escape sequence will not extend past LIMIT. The results are
470 written to OUTPUT. Returns a pointer to just past the final
471 character of the escape sequence. */
474 convert_escape (struct type *type, const char *dest_charset,
475 char *p, char *limit, struct obstack *output)
477 /* Skip the backslash. */
483 obstack_1grow (output, '\\');
490 error (_("\\x used with no following hex digits."));
491 p = convert_hex (type, p, limit, output);
502 p = convert_octal (type, p, limit, output);
508 int length = *p == 'u' ? 4 : 8;
512 error (_("\\u used with no following hex digits"));
513 p = convert_ucn (p, limit, dest_charset, output, length);
520 /* Given a single string from a (C-specific) OP_STRING list, convert
521 it to a target string, handling escape sequences specially. The
522 output is written to OUTPUT. DATA is the input string, which has
523 length LEN. DEST_CHARSET is the name of the target character set,
524 and TYPE is the type of target character to use. */
527 parse_one_string (struct obstack *output, char *data, int len,
528 const char *dest_charset, struct type *type)
538 /* Look for next escape, or the end of the input. */
539 while (p < limit && *p != '\\')
541 /* If we saw a run of characters, convert them all. */
543 convert_between_encodings (host_charset (), dest_charset,
544 (gdb_byte *) data, p - data, 1,
545 output, translit_none);
546 /* If we saw an escape, convert it. */
548 p = convert_escape (type, dest_charset, p, limit, output);
553 /* Expression evaluator for the C language family. Most operations
554 are delegated to evaluate_subexp_standard; see that function for a
555 description of the arguments. */
558 evaluate_subexp_c (struct type *expect_type, struct expression *exp,
559 int *pos, enum noside noside)
561 enum exp_opcode op = exp->elts[*pos].opcode;
569 struct value *result;
570 c_string_type dest_type;
571 const char *dest_charset;
572 int satisfy_expected = 0;
577 oplen = longest_to_int (exp->elts[*pos].longconst);
580 limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
581 dest_type = ((enum c_string_type_values)
582 longest_to_int (exp->elts[*pos].longconst));
583 switch (dest_type & ~C_CHAR)
586 type = language_string_char_type (exp->language_defn,
590 type = lookup_typename (exp->language_defn, exp->gdbarch,
594 type = lookup_typename (exp->language_defn, exp->gdbarch,
595 "char16_t", NULL, 0);
598 type = lookup_typename (exp->language_defn, exp->gdbarch,
599 "char32_t", NULL, 0);
602 internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
605 /* Ensure TYPE_LENGTH is valid for TYPE. */
606 check_typedef (type);
608 /* If the caller expects an array of some integral type,
609 satisfy them. If something odder is expected, rely on the
611 if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_ARRAY)
613 struct type *element_type
614 = check_typedef (TYPE_TARGET_TYPE (expect_type));
616 if (TYPE_CODE (element_type) == TYPE_CODE_INT
617 || TYPE_CODE (element_type) == TYPE_CODE_CHAR)
620 satisfy_expected = 1;
624 dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
631 len = longest_to_int (exp->elts[*pos].longconst);
634 if (noside != EVAL_SKIP)
635 parse_one_string (&output, &exp->elts[*pos].string, len,
637 *pos += BYTES_TO_EXP_ELEM (len);
640 /* Skip the trailing length and opcode. */
643 if (noside == EVAL_SKIP)
645 /* Return a dummy value of the appropriate type. */
646 if (expect_type != NULL)
647 result = allocate_value (expect_type);
648 else if ((dest_type & C_CHAR) != 0)
649 result = allocate_value (type);
651 result = value_cstring ("", 0, type);
655 if ((dest_type & C_CHAR) != 0)
659 if (obstack_object_size (&output) != TYPE_LENGTH (type))
660 error (_("Could not convert character "
661 "constant to target character set"));
662 value = unpack_long (type, (gdb_byte *) obstack_base (&output));
663 result = value_from_longest (type, value);
669 /* Write the terminating character. */
670 for (i = 0; i < TYPE_LENGTH (type); ++i)
671 obstack_1grow (&output, 0);
673 if (satisfy_expected)
675 LONGEST low_bound, high_bound;
676 int element_size = TYPE_LENGTH (type);
678 if (get_discrete_bounds (TYPE_INDEX_TYPE (expect_type),
679 &low_bound, &high_bound) < 0)
682 high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1;
684 if (obstack_object_size (&output) / element_size
685 > (high_bound - low_bound + 1))
686 error (_("Too many array elements"));
688 result = allocate_value (expect_type);
689 memcpy (value_contents_raw (result), obstack_base (&output),
690 obstack_object_size (&output));
693 result = value_cstring ((const char *) obstack_base (&output),
694 obstack_object_size (&output),
704 return evaluate_subexp_standard (expect_type, exp, pos, noside);
707 /* la_watch_location_expression for C. */
709 gdb::unique_xmalloc_ptr<char>
710 c_watch_location_expression (struct type *type, CORE_ADDR addr)
712 type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type)));
713 std::string name = type_to_string (type);
714 return gdb::unique_xmalloc_ptr<char>
715 (xstrprintf ("* (%s *) %s", name.c_str (), core_addr_to_string (addr)));
719 /* Table mapping opcodes into strings for printing operators
720 and precedences of the operators. */
722 const struct op_print c_op_print_tab[] =
724 {",", BINOP_COMMA, PREC_COMMA, 0},
725 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
726 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
727 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
728 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
729 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
730 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
731 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
732 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
733 {"<=", BINOP_LEQ, PREC_ORDER, 0},
734 {">=", BINOP_GEQ, PREC_ORDER, 0},
735 {">", BINOP_GTR, PREC_ORDER, 0},
736 {"<", BINOP_LESS, PREC_ORDER, 0},
737 {">>", BINOP_RSH, PREC_SHIFT, 0},
738 {"<<", BINOP_LSH, PREC_SHIFT, 0},
739 {"+", BINOP_ADD, PREC_ADD, 0},
740 {"-", BINOP_SUB, PREC_ADD, 0},
741 {"*", BINOP_MUL, PREC_MUL, 0},
742 {"/", BINOP_DIV, PREC_MUL, 0},
743 {"%", BINOP_REM, PREC_MUL, 0},
744 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
745 {"+", UNOP_PLUS, PREC_PREFIX, 0},
746 {"-", UNOP_NEG, PREC_PREFIX, 0},
747 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
748 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
749 {"*", UNOP_IND, PREC_PREFIX, 0},
750 {"&", UNOP_ADDR, PREC_PREFIX, 0},
751 {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
752 {"alignof ", UNOP_ALIGNOF, PREC_PREFIX, 0},
753 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
754 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
755 {NULL, OP_NULL, PREC_PREFIX, 0}
758 enum c_primitive_types {
759 c_primitive_type_int,
760 c_primitive_type_long,
761 c_primitive_type_short,
762 c_primitive_type_char,
763 c_primitive_type_float,
764 c_primitive_type_double,
765 c_primitive_type_void,
766 c_primitive_type_long_long,
767 c_primitive_type_signed_char,
768 c_primitive_type_unsigned_char,
769 c_primitive_type_unsigned_short,
770 c_primitive_type_unsigned_int,
771 c_primitive_type_unsigned_long,
772 c_primitive_type_unsigned_long_long,
773 c_primitive_type_long_double,
774 c_primitive_type_complex,
775 c_primitive_type_double_complex,
776 c_primitive_type_decfloat,
777 c_primitive_type_decdouble,
778 c_primitive_type_declong,
783 c_language_arch_info (struct gdbarch *gdbarch,
784 struct language_arch_info *lai)
786 const struct builtin_type *builtin = builtin_type (gdbarch);
788 lai->string_char_type = builtin->builtin_char;
789 lai->primitive_type_vector
790 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
792 lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
793 lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
794 lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
795 lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
796 lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
797 lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
798 lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
799 lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
800 lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
801 lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
802 lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
803 lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
804 lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
805 lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
806 lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
807 lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
808 lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
809 lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
810 lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
811 lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
813 lai->bool_type_default = builtin->builtin_int;
816 const struct exp_descriptor exp_descriptor_c =
818 print_subexp_standard,
819 operator_length_standard,
820 operator_check_standard,
822 dump_subexp_body_standard,
826 static const char *c_extensions[] =
831 extern const struct language_defn c_language_defn =
833 "c", /* Language name */
844 c_printchar, /* Print a character constant */
845 c_printstr, /* Function to print string constant */
846 c_emit_char, /* Print a single char */
847 c_print_type, /* Print a type using appropriate syntax */
848 c_print_typedef, /* Print a typedef using appropriate syntax */
849 c_val_print, /* Print a value using appropriate syntax */
850 c_value_print, /* Print a top-level value */
851 default_read_var_value, /* la_read_var_value */
852 NULL, /* Language specific skip_trampoline */
853 NULL, /* name_of_this */
854 true, /* la_store_sym_names_in_linkage_form_p */
855 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
856 basic_lookup_transparent_type,/* lookup_transparent_type */
857 NULL, /* Language specific symbol demangler */
859 NULL, /* Language specific
860 class_name_from_physname */
861 c_op_print_tab, /* expression operators for printing */
862 1, /* c-style arrays */
863 0, /* String lower bound */
864 default_word_break_characters,
865 default_collect_symbol_completion_matches,
866 c_language_arch_info,
867 default_print_array_index,
868 default_pass_by_reference,
870 c_watch_location_expression,
871 NULL, /* la_get_symbol_name_matcher */
872 iterate_over_symbols,
873 default_search_name_hash,
875 c_get_compile_context,
880 enum cplus_primitive_types {
881 cplus_primitive_type_int,
882 cplus_primitive_type_long,
883 cplus_primitive_type_short,
884 cplus_primitive_type_char,
885 cplus_primitive_type_float,
886 cplus_primitive_type_double,
887 cplus_primitive_type_void,
888 cplus_primitive_type_long_long,
889 cplus_primitive_type_signed_char,
890 cplus_primitive_type_unsigned_char,
891 cplus_primitive_type_unsigned_short,
892 cplus_primitive_type_unsigned_int,
893 cplus_primitive_type_unsigned_long,
894 cplus_primitive_type_unsigned_long_long,
895 cplus_primitive_type_long_double,
896 cplus_primitive_type_complex,
897 cplus_primitive_type_double_complex,
898 cplus_primitive_type_bool,
899 cplus_primitive_type_decfloat,
900 cplus_primitive_type_decdouble,
901 cplus_primitive_type_declong,
902 cplus_primitive_type_char16_t,
903 cplus_primitive_type_char32_t,
904 cplus_primitive_type_wchar_t,
905 nr_cplus_primitive_types
909 cplus_language_arch_info (struct gdbarch *gdbarch,
910 struct language_arch_info *lai)
912 const struct builtin_type *builtin = builtin_type (gdbarch);
914 lai->string_char_type = builtin->builtin_char;
915 lai->primitive_type_vector
916 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
918 lai->primitive_type_vector [cplus_primitive_type_int]
919 = builtin->builtin_int;
920 lai->primitive_type_vector [cplus_primitive_type_long]
921 = builtin->builtin_long;
922 lai->primitive_type_vector [cplus_primitive_type_short]
923 = builtin->builtin_short;
924 lai->primitive_type_vector [cplus_primitive_type_char]
925 = builtin->builtin_char;
926 lai->primitive_type_vector [cplus_primitive_type_float]
927 = builtin->builtin_float;
928 lai->primitive_type_vector [cplus_primitive_type_double]
929 = builtin->builtin_double;
930 lai->primitive_type_vector [cplus_primitive_type_void]
931 = builtin->builtin_void;
932 lai->primitive_type_vector [cplus_primitive_type_long_long]
933 = builtin->builtin_long_long;
934 lai->primitive_type_vector [cplus_primitive_type_signed_char]
935 = builtin->builtin_signed_char;
936 lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
937 = builtin->builtin_unsigned_char;
938 lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
939 = builtin->builtin_unsigned_short;
940 lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
941 = builtin->builtin_unsigned_int;
942 lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
943 = builtin->builtin_unsigned_long;
944 lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
945 = builtin->builtin_unsigned_long_long;
946 lai->primitive_type_vector [cplus_primitive_type_long_double]
947 = builtin->builtin_long_double;
948 lai->primitive_type_vector [cplus_primitive_type_complex]
949 = builtin->builtin_complex;
950 lai->primitive_type_vector [cplus_primitive_type_double_complex]
951 = builtin->builtin_double_complex;
952 lai->primitive_type_vector [cplus_primitive_type_bool]
953 = builtin->builtin_bool;
954 lai->primitive_type_vector [cplus_primitive_type_decfloat]
955 = builtin->builtin_decfloat;
956 lai->primitive_type_vector [cplus_primitive_type_decdouble]
957 = builtin->builtin_decdouble;
958 lai->primitive_type_vector [cplus_primitive_type_declong]
959 = builtin->builtin_declong;
960 lai->primitive_type_vector [cplus_primitive_type_char16_t]
961 = builtin->builtin_char16;
962 lai->primitive_type_vector [cplus_primitive_type_char32_t]
963 = builtin->builtin_char32;
964 lai->primitive_type_vector [cplus_primitive_type_wchar_t]
965 = builtin->builtin_wchar;
967 lai->bool_type_symbol = "bool";
968 lai->bool_type_default = builtin->builtin_bool;
971 static const char *cplus_extensions[] =
973 ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL
976 extern const struct language_defn cplus_language_defn =
978 "c++", /* Language name */
989 c_printchar, /* Print a character constant */
990 c_printstr, /* Function to print string constant */
991 c_emit_char, /* Print a single char */
992 c_print_type, /* Print a type using appropriate syntax */
993 c_print_typedef, /* Print a typedef using appropriate syntax */
994 c_val_print, /* Print a value using appropriate syntax */
995 c_value_print, /* Print a top-level value */
996 default_read_var_value, /* la_read_var_value */
997 cplus_skip_trampoline, /* Language specific skip_trampoline */
998 "this", /* name_of_this */
999 false, /* la_store_sym_names_in_linkage_form_p */
1000 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1001 cp_lookup_transparent_type, /* lookup_transparent_type */
1002 gdb_demangle, /* Language specific symbol demangler */
1003 gdb_sniff_from_mangled_name,
1004 cp_class_name_from_physname, /* Language specific
1005 class_name_from_physname */
1006 c_op_print_tab, /* expression operators for printing */
1007 1, /* c-style arrays */
1008 0, /* String lower bound */
1009 default_word_break_characters,
1010 default_collect_symbol_completion_matches,
1011 cplus_language_arch_info,
1012 default_print_array_index,
1013 cp_pass_by_reference,
1015 c_watch_location_expression,
1016 cp_get_symbol_name_matcher,
1017 iterate_over_symbols,
1018 cp_search_name_hash,
1020 cplus_get_compile_context,
1021 cplus_compute_program,
1025 static const char *asm_extensions[] =
1027 ".s", ".sx", ".S", NULL
1030 extern const struct language_defn asm_language_defn =
1032 "asm", /* Language name */
1043 c_printchar, /* Print a character constant */
1044 c_printstr, /* Function to print string constant */
1045 c_emit_char, /* Print a single char */
1046 c_print_type, /* Print a type using appropriate syntax */
1047 c_print_typedef, /* Print a typedef using appropriate syntax */
1048 c_val_print, /* Print a value using appropriate syntax */
1049 c_value_print, /* Print a top-level value */
1050 default_read_var_value, /* la_read_var_value */
1051 NULL, /* Language specific skip_trampoline */
1052 NULL, /* name_of_this */
1053 true, /* la_store_sym_names_in_linkage_form_p */
1054 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1055 basic_lookup_transparent_type,/* lookup_transparent_type */
1056 NULL, /* Language specific symbol demangler */
1058 NULL, /* Language specific
1059 class_name_from_physname */
1060 c_op_print_tab, /* expression operators for printing */
1061 1, /* c-style arrays */
1062 0, /* String lower bound */
1063 default_word_break_characters,
1064 default_collect_symbol_completion_matches,
1065 c_language_arch_info, /* FIXME: la_language_arch_info. */
1066 default_print_array_index,
1067 default_pass_by_reference,
1069 c_watch_location_expression,
1070 NULL, /* la_get_symbol_name_matcher */
1071 iterate_over_symbols,
1072 default_search_name_hash,
1073 &default_varobj_ops,
1079 /* The following language_defn does not represent a real language.
1080 It just provides a minimal support a-la-C that should allow users
1081 to do some simple operations when debugging applications that use
1082 a language currently not supported by GDB. */
1084 extern const struct language_defn minimal_language_defn =
1086 "minimal", /* Language name */
1097 c_printchar, /* Print a character constant */
1098 c_printstr, /* Function to print string constant */
1099 c_emit_char, /* Print a single char */
1100 c_print_type, /* Print a type using appropriate syntax */
1101 c_print_typedef, /* Print a typedef using appropriate syntax */
1102 c_val_print, /* Print a value using appropriate syntax */
1103 c_value_print, /* Print a top-level value */
1104 default_read_var_value, /* la_read_var_value */
1105 NULL, /* Language specific skip_trampoline */
1106 NULL, /* name_of_this */
1107 true, /* la_store_sym_names_in_linkage_form_p */
1108 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1109 basic_lookup_transparent_type,/* lookup_transparent_type */
1110 NULL, /* Language specific symbol demangler */
1112 NULL, /* Language specific
1113 class_name_from_physname */
1114 c_op_print_tab, /* expression operators for printing */
1115 1, /* c-style arrays */
1116 0, /* String lower bound */
1117 default_word_break_characters,
1118 default_collect_symbol_completion_matches,
1119 c_language_arch_info,
1120 default_print_array_index,
1121 default_pass_by_reference,
1123 c_watch_location_expression,
1124 NULL, /* la_get_symbol_name_matcher */
1125 iterate_over_symbols,
1126 default_search_name_hash,
1127 &default_varobj_ops,