1 /* C language support routines for GDB, the GNU debugger.
3 Copyright (C) 1992-2017 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"
29 #include "macroscope.h"
33 #include "cp-support.h"
34 #include "gdb_obstack.h"
38 extern void _initialize_c_language (void);
40 /* Given a C string type, STR_TYPE, return the corresponding target
41 character set name. */
44 charset_for_string_type (c_string_type str_type, struct gdbarch *gdbarch)
46 switch (str_type & ~C_CHAR)
49 return target_charset (gdbarch);
51 return target_wide_charset (gdbarch);
53 /* FIXME: UTF-16 is not always correct. */
54 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
59 /* FIXME: UTF-32 is not always correct. */
60 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
65 internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
68 /* Classify ELTTYPE according to what kind of character it is. Return
69 the enum constant representing the character type. Also set
70 *ENCODING to the name of the character set to use when converting
71 characters of this type in target BYTE_ORDER to the host character
75 classify_type (struct type *elttype, struct gdbarch *gdbarch,
76 const char **encoding)
80 /* We loop because ELTTYPE may be a typedef, and we want to
81 successively peel each typedef until we reach a type we
82 understand. We don't use CHECK_TYPEDEF because that will strip
83 all typedefs at once -- but in C, wchar_t is itself a typedef, so
84 that would do the wrong thing. */
87 const char *name = TYPE_NAME (elttype);
89 if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
95 if (!strcmp (name, "wchar_t"))
101 if (!strcmp (name, "char16_t"))
107 if (!strcmp (name, "char32_t"))
113 if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF)
116 /* Call for side effects. */
117 check_typedef (elttype);
119 if (TYPE_TARGET_TYPE (elttype))
120 elttype = TYPE_TARGET_TYPE (elttype);
123 /* Perhaps check_typedef did not update the target type. In
124 this case, force the lookup again and hope it works out.
125 It never will for C, but it might for C++. */
126 elttype = check_typedef (elttype);
135 *encoding = charset_for_string_type (result, gdbarch);
140 /* Print the character C on STREAM as part of the contents of a
141 literal string whose delimiter is QUOTER. Note that that format
142 for printing characters and strings is language specific. */
145 c_emit_char (int c, struct type *type,
146 struct ui_file *stream, int quoter)
148 const char *encoding;
150 classify_type (type, get_type_arch (type), &encoding);
151 generic_emit_char (c, type, stream, quoter, encoding);
155 c_printchar (int c, struct type *type, struct ui_file *stream)
157 c_string_type str_type;
159 str_type = classify_type (type, get_type_arch (type), NULL);
165 fputc_filtered ('L', stream);
168 fputc_filtered ('u', stream);
171 fputc_filtered ('U', stream);
175 fputc_filtered ('\'', stream);
176 LA_EMIT_CHAR (c, type, stream, '\'');
177 fputc_filtered ('\'', stream);
180 /* Print the character string STRING, printing at most LENGTH
181 characters. LENGTH is -1 if the string is nul terminated. Each
182 character is WIDTH bytes long. Printing stops early if the number
183 hits print_max; repeat counts are printed as appropriate. Print
184 ellipses at the end if we had to stop before printing LENGTH
185 characters, or if FORCE_ELLIPSES. */
188 c_printstr (struct ui_file *stream, struct type *type,
189 const gdb_byte *string, unsigned int length,
190 const char *user_encoding, int force_ellipses,
191 const struct value_print_options *options)
193 c_string_type str_type;
194 const char *type_encoding;
195 const char *encoding;
197 str_type = (classify_type (type, get_type_arch (type), &type_encoding)
204 fputs_filtered ("L", stream);
207 fputs_filtered ("u", stream);
210 fputs_filtered ("U", stream);
214 encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding;
216 generic_printstr (stream, type, string, length, encoding, force_ellipses,
220 /* Obtain a C string from the inferior storing it in a newly allocated
221 buffer in BUFFER, which should be freed by the caller. If the in-
222 and out-parameter *LENGTH is specified at -1, the string is read
223 until a null character of the appropriate width is found, otherwise
224 the string is read to the length of characters specified. The size
225 of a character is determined by the length of the target type of
226 the pointer or array.
228 If VALUE is an array with a known length, and *LENGTH is -1,
229 the function will not read past the end of the array. However, any
230 declared size of the array is ignored if *LENGTH > 0.
232 On completion, *LENGTH will be set to the size of the string read in
233 characters. (If a length of -1 is specified, the length returned
234 will not include the null character). CHARSET is always set to the
238 c_get_string (struct value *value, gdb_byte **buffer,
239 int *length, struct type **char_type,
240 const char **charset)
243 unsigned int fetchlimit;
244 struct type *type = check_typedef (value_type (value));
245 struct type *element_type = TYPE_TARGET_TYPE (type);
246 int req_length = *length;
247 enum bfd_endian byte_order
248 = gdbarch_byte_order (get_type_arch (type));
250 if (element_type == NULL)
253 if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
255 /* If we know the size of the array, we can use it as a limit on
256 the number of characters to be fetched. */
257 if (TYPE_NFIELDS (type) == 1
258 && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE)
260 LONGEST low_bound, high_bound;
262 get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
263 &low_bound, &high_bound);
264 fetchlimit = high_bound - low_bound + 1;
267 fetchlimit = UINT_MAX;
269 else if (TYPE_CODE (type) == TYPE_CODE_PTR)
270 fetchlimit = UINT_MAX;
272 /* We work only with arrays and pointers. */
275 if (! c_textual_element_type (element_type, 0))
277 classify_type (element_type, get_type_arch (element_type), charset);
278 width = TYPE_LENGTH (element_type);
280 /* If the string lives in GDB's memory instead of the inferior's,
281 then we just need to copy it to BUFFER. Also, since such strings
282 are arrays with known size, FETCHLIMIT will hold the size of the
284 if ((VALUE_LVAL (value) == not_lval
285 || VALUE_LVAL (value) == lval_internalvar)
286 && fetchlimit != UINT_MAX)
289 const gdb_byte *contents = value_contents (value);
291 /* If a length is specified, use that. */
295 /* Otherwise, look for a null character. */
296 for (i = 0; i < fetchlimit; i++)
297 if (extract_unsigned_integer (contents + i * width,
298 width, byte_order) == 0)
301 /* I is now either a user-defined length, the number of non-null
302 characters, or FETCHLIMIT. */
304 *buffer = (gdb_byte *) xmalloc (*length);
305 memcpy (*buffer, contents, *length);
310 CORE_ADDR addr = value_as_address (value);
312 /* Prior to the fix for PR 16196 read_string would ignore fetchlimit
313 if length > 0. The old "broken" behaviour is the behaviour we want:
314 The caller may want to fetch 100 bytes from a variable length array
315 implemented using the common idiom of having an array of length 1 at
316 the end of a struct. In this case we want to ignore the declared
317 size of the array. However, it's counterintuitive to implement that
318 behaviour in read_string: what does fetchlimit otherwise mean if
319 length > 0. Therefore we implement the behaviour we want here:
320 If *length > 0, don't specify a fetchlimit. This preserves the
321 previous behaviour. We could move this check above where we know
322 whether the array is declared with a fixed size, but we only want
323 to apply this behaviour when calling read_string. PR 16286. */
325 fetchlimit = UINT_MAX;
327 err = read_string (addr, *length, width, fetchlimit,
328 byte_order, buffer, length);
332 memory_error (TARGET_XFER_E_IO, addr);
336 /* If the LENGTH is specified at -1, we want to return the string
337 length up to the terminating null character. If an actual length
338 was specified, we want to return the length of exactly what was
340 if (req_length == -1)
341 /* If the last character is null, subtract it from LENGTH. */
343 && extract_unsigned_integer (*buffer + *length - width,
344 width, byte_order) == 0)
347 /* The read_string function will return the number of bytes read.
348 If length returned from read_string was > 0, return the number of
349 characters read by dividing the number of bytes by width. */
351 *length = *length / width;
353 *char_type = element_type;
359 std::string type_str = type_to_string (type);
360 if (!type_str.empty ())
362 error (_("Trying to read string with inappropriate type `%s'."),
366 error (_("Trying to read string with inappropriate type."));
371 /* Evaluating C and C++ expressions. */
373 /* Convert a UCN. The digits of the UCN start at P and extend no
374 farther than LIMIT. DEST_CHARSET is the name of the character set
375 into which the UCN should be converted. The results are written to
376 OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8.
377 Returns a pointer to just after the final digit of the UCN. */
380 convert_ucn (char *p, char *limit, const char *dest_charset,
381 struct obstack *output, int length)
383 unsigned long result = 0;
387 for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p)
388 result = (result << 4) + host_hex_value (*p);
390 for (i = 3; i >= 0; --i)
392 data[i] = result & 0xff;
396 convert_between_encodings ("UTF-32BE", dest_charset, data,
397 4, 4, output, translit_none);
402 /* Emit a character, VALUE, which was specified numerically, to
403 OUTPUT. TYPE is the target character type. */
406 emit_numeric_character (struct type *type, unsigned long value,
407 struct obstack *output)
411 buffer = (gdb_byte *) alloca (TYPE_LENGTH (type));
412 pack_long (buffer, type, value);
413 obstack_grow (output, buffer, TYPE_LENGTH (type));
416 /* Convert an octal escape sequence. TYPE is the target character
417 type. The digits of the escape sequence begin at P and extend no
418 farther than LIMIT. The result is written to OUTPUT. Returns a
419 pointer to just after the final digit of the escape sequence. */
422 convert_octal (struct type *type, char *p,
423 char *limit, struct obstack *output)
426 unsigned long value = 0;
429 i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
432 value = 8 * value + host_hex_value (*p);
436 emit_numeric_character (type, value, output);
441 /* Convert a hex escape sequence. TYPE is the target character type.
442 The digits of the escape sequence begin at P and extend no farther
443 than LIMIT. The result is written to OUTPUT. Returns a pointer to
444 just after the final digit of the escape sequence. */
447 convert_hex (struct type *type, char *p,
448 char *limit, struct obstack *output)
450 unsigned long value = 0;
452 while (p < limit && isxdigit (*p))
454 value = 16 * value + host_hex_value (*p);
458 emit_numeric_character (type, value, output);
467 error (_("Malformed escape sequence")); \
470 /* Convert an escape sequence to a target format. TYPE is the target
471 character type to use, and DEST_CHARSET is the name of the target
472 character set. The backslash of the escape sequence is at *P, and
473 the escape sequence will not extend past LIMIT. The results are
474 written to OUTPUT. Returns a pointer to just past the final
475 character of the escape sequence. */
478 convert_escape (struct type *type, const char *dest_charset,
479 char *p, char *limit, struct obstack *output)
481 /* Skip the backslash. */
487 obstack_1grow (output, '\\');
494 error (_("\\x used with no following hex digits."));
495 p = convert_hex (type, p, limit, output);
506 p = convert_octal (type, p, limit, output);
512 int length = *p == 'u' ? 4 : 8;
516 error (_("\\u used with no following hex digits"));
517 p = convert_ucn (p, limit, dest_charset, output, length);
524 /* Given a single string from a (C-specific) OP_STRING list, convert
525 it to a target string, handling escape sequences specially. The
526 output is written to OUTPUT. DATA is the input string, which has
527 length LEN. DEST_CHARSET is the name of the target character set,
528 and TYPE is the type of target character to use. */
531 parse_one_string (struct obstack *output, char *data, int len,
532 const char *dest_charset, struct type *type)
542 /* Look for next escape, or the end of the input. */
543 while (p < limit && *p != '\\')
545 /* If we saw a run of characters, convert them all. */
547 convert_between_encodings (host_charset (), dest_charset,
548 (gdb_byte *) data, p - data, 1,
549 output, translit_none);
550 /* If we saw an escape, convert it. */
552 p = convert_escape (type, dest_charset, p, limit, output);
557 /* Expression evaluator for the C language family. Most operations
558 are delegated to evaluate_subexp_standard; see that function for a
559 description of the arguments. */
562 evaluate_subexp_c (struct type *expect_type, struct expression *exp,
563 int *pos, enum noside noside)
565 enum exp_opcode op = exp->elts[*pos].opcode;
573 struct obstack output;
574 struct cleanup *cleanup;
575 struct value *result;
576 c_string_type dest_type;
577 const char *dest_charset;
578 int satisfy_expected = 0;
580 obstack_init (&output);
581 cleanup = make_cleanup_obstack_free (&output);
584 oplen = longest_to_int (exp->elts[*pos].longconst);
587 limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
588 dest_type = ((enum c_string_type_values)
589 longest_to_int (exp->elts[*pos].longconst));
590 switch (dest_type & ~C_CHAR)
593 type = language_string_char_type (exp->language_defn,
597 type = lookup_typename (exp->language_defn, exp->gdbarch,
601 type = lookup_typename (exp->language_defn, exp->gdbarch,
602 "char16_t", NULL, 0);
605 type = lookup_typename (exp->language_defn, exp->gdbarch,
606 "char32_t", NULL, 0);
609 internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
612 /* Ensure TYPE_LENGTH is valid for TYPE. */
613 check_typedef (type);
615 /* If the caller expects an array of some integral type,
616 satisfy them. If something odder is expected, rely on the
618 if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_ARRAY)
620 struct type *element_type
621 = check_typedef (TYPE_TARGET_TYPE (expect_type));
623 if (TYPE_CODE (element_type) == TYPE_CODE_INT
624 || TYPE_CODE (element_type) == TYPE_CODE_CHAR)
627 satisfy_expected = 1;
631 dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
638 len = longest_to_int (exp->elts[*pos].longconst);
641 if (noside != EVAL_SKIP)
642 parse_one_string (&output, &exp->elts[*pos].string, len,
644 *pos += BYTES_TO_EXP_ELEM (len);
647 /* Skip the trailing length and opcode. */
650 if (noside == EVAL_SKIP)
652 /* Return a dummy value of the appropriate type. */
653 if (expect_type != NULL)
654 result = allocate_value (expect_type);
655 else if ((dest_type & C_CHAR) != 0)
656 result = allocate_value (type);
658 result = value_cstring ("", 0, type);
659 do_cleanups (cleanup);
663 if ((dest_type & C_CHAR) != 0)
667 if (obstack_object_size (&output) != TYPE_LENGTH (type))
668 error (_("Could not convert character "
669 "constant to target character set"));
670 value = unpack_long (type, (gdb_byte *) obstack_base (&output));
671 result = value_from_longest (type, value);
677 /* Write the terminating character. */
678 for (i = 0; i < TYPE_LENGTH (type); ++i)
679 obstack_1grow (&output, 0);
681 if (satisfy_expected)
683 LONGEST low_bound, high_bound;
684 int element_size = TYPE_LENGTH (type);
686 if (get_discrete_bounds (TYPE_INDEX_TYPE (expect_type),
687 &low_bound, &high_bound) < 0)
690 high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1;
692 if (obstack_object_size (&output) / element_size
693 > (high_bound - low_bound + 1))
694 error (_("Too many array elements"));
696 result = allocate_value (expect_type);
697 memcpy (value_contents_raw (result), obstack_base (&output),
698 obstack_object_size (&output));
701 result = value_cstring ((const char *) obstack_base (&output),
702 obstack_object_size (&output),
705 do_cleanups (cleanup);
713 return evaluate_subexp_standard (expect_type, exp, pos, noside);
718 /* Table mapping opcodes into strings for printing operators
719 and precedences of the operators. */
721 const struct op_print c_op_print_tab[] =
723 {",", BINOP_COMMA, PREC_COMMA, 0},
724 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
725 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
726 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
727 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
728 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
729 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
730 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
731 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
732 {"<=", BINOP_LEQ, PREC_ORDER, 0},
733 {">=", BINOP_GEQ, PREC_ORDER, 0},
734 {">", BINOP_GTR, PREC_ORDER, 0},
735 {"<", BINOP_LESS, PREC_ORDER, 0},
736 {">>", BINOP_RSH, PREC_SHIFT, 0},
737 {"<<", BINOP_LSH, PREC_SHIFT, 0},
738 {"+", BINOP_ADD, PREC_ADD, 0},
739 {"-", BINOP_SUB, PREC_ADD, 0},
740 {"*", BINOP_MUL, PREC_MUL, 0},
741 {"/", BINOP_DIV, PREC_MUL, 0},
742 {"%", BINOP_REM, PREC_MUL, 0},
743 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
744 {"+", UNOP_PLUS, PREC_PREFIX, 0},
745 {"-", UNOP_NEG, PREC_PREFIX, 0},
746 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
747 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
748 {"*", UNOP_IND, PREC_PREFIX, 0},
749 {"&", UNOP_ADDR, PREC_PREFIX, 0},
750 {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
751 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
752 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
753 {NULL, OP_NULL, PREC_PREFIX, 0}
756 enum c_primitive_types {
757 c_primitive_type_int,
758 c_primitive_type_long,
759 c_primitive_type_short,
760 c_primitive_type_char,
761 c_primitive_type_float,
762 c_primitive_type_double,
763 c_primitive_type_void,
764 c_primitive_type_long_long,
765 c_primitive_type_signed_char,
766 c_primitive_type_unsigned_char,
767 c_primitive_type_unsigned_short,
768 c_primitive_type_unsigned_int,
769 c_primitive_type_unsigned_long,
770 c_primitive_type_unsigned_long_long,
771 c_primitive_type_long_double,
772 c_primitive_type_complex,
773 c_primitive_type_double_complex,
774 c_primitive_type_decfloat,
775 c_primitive_type_decdouble,
776 c_primitive_type_declong,
781 c_language_arch_info (struct gdbarch *gdbarch,
782 struct language_arch_info *lai)
784 const struct builtin_type *builtin = builtin_type (gdbarch);
786 lai->string_char_type = builtin->builtin_char;
787 lai->primitive_type_vector
788 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
790 lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
791 lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
792 lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
793 lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
794 lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
795 lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
796 lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
797 lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
798 lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
799 lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
800 lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
801 lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
802 lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
803 lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
804 lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
805 lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
806 lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
807 lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
808 lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
809 lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
811 lai->bool_type_default = builtin->builtin_int;
814 const struct exp_descriptor exp_descriptor_c =
816 print_subexp_standard,
817 operator_length_standard,
818 operator_check_standard,
820 dump_subexp_body_standard,
824 static const char *c_extensions[] =
829 const struct language_defn c_language_defn =
831 "c", /* Language name */
843 c_printchar, /* Print a character constant */
844 c_printstr, /* Function to print string constant */
845 c_emit_char, /* Print a single char */
846 c_print_type, /* Print a type using appropriate syntax */
847 c_print_typedef, /* Print a typedef using appropriate syntax */
848 c_val_print, /* Print a value using appropriate syntax */
849 c_value_print, /* Print a top-level value */
850 default_read_var_value, /* la_read_var_value */
851 NULL, /* Language specific skip_trampoline */
852 NULL, /* name_of_this */
853 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
854 basic_lookup_transparent_type,/* lookup_transparent_type */
855 NULL, /* Language specific symbol demangler */
857 NULL, /* Language specific
858 class_name_from_physname */
859 c_op_print_tab, /* expression operators for printing */
860 1, /* c-style arrays */
861 0, /* String lower bound */
862 default_word_break_characters,
863 default_make_symbol_completion_list,
864 c_language_arch_info,
865 default_print_array_index,
866 default_pass_by_reference,
868 NULL, /* la_get_symbol_name_cmp */
869 iterate_over_symbols,
871 c_get_compile_context,
876 enum cplus_primitive_types {
877 cplus_primitive_type_int,
878 cplus_primitive_type_long,
879 cplus_primitive_type_short,
880 cplus_primitive_type_char,
881 cplus_primitive_type_float,
882 cplus_primitive_type_double,
883 cplus_primitive_type_void,
884 cplus_primitive_type_long_long,
885 cplus_primitive_type_signed_char,
886 cplus_primitive_type_unsigned_char,
887 cplus_primitive_type_unsigned_short,
888 cplus_primitive_type_unsigned_int,
889 cplus_primitive_type_unsigned_long,
890 cplus_primitive_type_unsigned_long_long,
891 cplus_primitive_type_long_double,
892 cplus_primitive_type_complex,
893 cplus_primitive_type_double_complex,
894 cplus_primitive_type_bool,
895 cplus_primitive_type_decfloat,
896 cplus_primitive_type_decdouble,
897 cplus_primitive_type_declong,
898 cplus_primitive_type_char16_t,
899 cplus_primitive_type_char32_t,
900 cplus_primitive_type_wchar_t,
901 nr_cplus_primitive_types
905 cplus_language_arch_info (struct gdbarch *gdbarch,
906 struct language_arch_info *lai)
908 const struct builtin_type *builtin = builtin_type (gdbarch);
910 lai->string_char_type = builtin->builtin_char;
911 lai->primitive_type_vector
912 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
914 lai->primitive_type_vector [cplus_primitive_type_int]
915 = builtin->builtin_int;
916 lai->primitive_type_vector [cplus_primitive_type_long]
917 = builtin->builtin_long;
918 lai->primitive_type_vector [cplus_primitive_type_short]
919 = builtin->builtin_short;
920 lai->primitive_type_vector [cplus_primitive_type_char]
921 = builtin->builtin_char;
922 lai->primitive_type_vector [cplus_primitive_type_float]
923 = builtin->builtin_float;
924 lai->primitive_type_vector [cplus_primitive_type_double]
925 = builtin->builtin_double;
926 lai->primitive_type_vector [cplus_primitive_type_void]
927 = builtin->builtin_void;
928 lai->primitive_type_vector [cplus_primitive_type_long_long]
929 = builtin->builtin_long_long;
930 lai->primitive_type_vector [cplus_primitive_type_signed_char]
931 = builtin->builtin_signed_char;
932 lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
933 = builtin->builtin_unsigned_char;
934 lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
935 = builtin->builtin_unsigned_short;
936 lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
937 = builtin->builtin_unsigned_int;
938 lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
939 = builtin->builtin_unsigned_long;
940 lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
941 = builtin->builtin_unsigned_long_long;
942 lai->primitive_type_vector [cplus_primitive_type_long_double]
943 = builtin->builtin_long_double;
944 lai->primitive_type_vector [cplus_primitive_type_complex]
945 = builtin->builtin_complex;
946 lai->primitive_type_vector [cplus_primitive_type_double_complex]
947 = builtin->builtin_double_complex;
948 lai->primitive_type_vector [cplus_primitive_type_bool]
949 = builtin->builtin_bool;
950 lai->primitive_type_vector [cplus_primitive_type_decfloat]
951 = builtin->builtin_decfloat;
952 lai->primitive_type_vector [cplus_primitive_type_decdouble]
953 = builtin->builtin_decdouble;
954 lai->primitive_type_vector [cplus_primitive_type_declong]
955 = builtin->builtin_declong;
956 lai->primitive_type_vector [cplus_primitive_type_char16_t]
957 = builtin->builtin_char16;
958 lai->primitive_type_vector [cplus_primitive_type_char32_t]
959 = builtin->builtin_char32;
960 lai->primitive_type_vector [cplus_primitive_type_wchar_t]
961 = builtin->builtin_wchar;
963 lai->bool_type_symbol = "bool";
964 lai->bool_type_default = builtin->builtin_bool;
967 static const char *cplus_extensions[] =
969 ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL
972 const struct language_defn cplus_language_defn =
974 "c++", /* Language name */
986 c_printchar, /* Print a character constant */
987 c_printstr, /* Function to print string constant */
988 c_emit_char, /* Print a single char */
989 c_print_type, /* Print a type using appropriate syntax */
990 c_print_typedef, /* Print a typedef using appropriate syntax */
991 c_val_print, /* Print a value using appropriate syntax */
992 c_value_print, /* Print a top-level value */
993 default_read_var_value, /* la_read_var_value */
994 cplus_skip_trampoline, /* Language specific skip_trampoline */
995 "this", /* name_of_this */
996 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
997 cp_lookup_transparent_type, /* lookup_transparent_type */
998 gdb_demangle, /* Language specific symbol demangler */
999 gdb_sniff_from_mangled_name,
1000 cp_class_name_from_physname, /* Language specific
1001 class_name_from_physname */
1002 c_op_print_tab, /* expression operators for printing */
1003 1, /* c-style arrays */
1004 0, /* String lower bound */
1005 default_word_break_characters,
1006 default_make_symbol_completion_list,
1007 cplus_language_arch_info,
1008 default_print_array_index,
1009 cp_pass_by_reference,
1011 NULL, /* la_get_symbol_name_cmp */
1012 iterate_over_symbols,
1019 static const char *asm_extensions[] =
1021 ".s", ".sx", ".S", NULL
1024 const struct language_defn asm_language_defn =
1026 "asm", /* Language name */
1038 c_printchar, /* Print a character constant */
1039 c_printstr, /* Function to print string constant */
1040 c_emit_char, /* Print a single char */
1041 c_print_type, /* Print a type using appropriate syntax */
1042 c_print_typedef, /* Print a typedef using appropriate syntax */
1043 c_val_print, /* Print a value using appropriate syntax */
1044 c_value_print, /* Print a top-level value */
1045 default_read_var_value, /* la_read_var_value */
1046 NULL, /* Language specific skip_trampoline */
1047 NULL, /* name_of_this */
1048 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1049 basic_lookup_transparent_type,/* lookup_transparent_type */
1050 NULL, /* Language specific symbol demangler */
1052 NULL, /* Language specific
1053 class_name_from_physname */
1054 c_op_print_tab, /* expression operators for printing */
1055 1, /* c-style arrays */
1056 0, /* String lower bound */
1057 default_word_break_characters,
1058 default_make_symbol_completion_list,
1059 c_language_arch_info, /* FIXME: la_language_arch_info. */
1060 default_print_array_index,
1061 default_pass_by_reference,
1063 NULL, /* la_get_symbol_name_cmp */
1064 iterate_over_symbols,
1065 &default_varobj_ops,
1071 /* The following language_defn does not represent a real language.
1072 It just provides a minimal support a-la-C that should allow users
1073 to do some simple operations when debugging applications that use
1074 a language currently not supported by GDB. */
1076 const struct language_defn minimal_language_defn =
1078 "minimal", /* Language name */
1090 c_printchar, /* Print a character constant */
1091 c_printstr, /* Function to print string constant */
1092 c_emit_char, /* Print a single char */
1093 c_print_type, /* Print a type using appropriate syntax */
1094 c_print_typedef, /* Print a typedef using appropriate syntax */
1095 c_val_print, /* Print a value using appropriate syntax */
1096 c_value_print, /* Print a top-level value */
1097 default_read_var_value, /* la_read_var_value */
1098 NULL, /* Language specific skip_trampoline */
1099 NULL, /* name_of_this */
1100 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1101 basic_lookup_transparent_type,/* lookup_transparent_type */
1102 NULL, /* Language specific symbol demangler */
1104 NULL, /* Language specific
1105 class_name_from_physname */
1106 c_op_print_tab, /* expression operators for printing */
1107 1, /* c-style arrays */
1108 0, /* String lower bound */
1109 default_word_break_characters,
1110 default_make_symbol_completion_list,
1111 c_language_arch_info,
1112 default_print_array_index,
1113 default_pass_by_reference,
1115 NULL, /* la_get_symbol_name_cmp */
1116 iterate_over_symbols,
1117 &default_varobj_ops,
1124 _initialize_c_language (void)
1126 add_language (&c_language_defn);
1127 add_language (&cplus_language_defn);
1128 add_language (&asm_language_defn);
1129 add_language (&minimal_language_defn);