1 /* C language support routines for GDB, the GNU debugger.
3 Copyright (C) 1992-2016 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;
361 type_str = type_to_string (type);
364 make_cleanup (xfree, type_str);
365 error (_("Trying to read string with inappropriate type `%s'."),
369 error (_("Trying to read string with inappropriate type."));
374 /* Evaluating C and C++ expressions. */
376 /* Convert a UCN. The digits of the UCN start at P and extend no
377 farther than LIMIT. DEST_CHARSET is the name of the character set
378 into which the UCN should be converted. The results are written to
379 OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8.
380 Returns a pointer to just after the final digit of the UCN. */
383 convert_ucn (char *p, char *limit, const char *dest_charset,
384 struct obstack *output, int length)
386 unsigned long result = 0;
390 for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p)
391 result = (result << 4) + host_hex_value (*p);
393 for (i = 3; i >= 0; --i)
395 data[i] = result & 0xff;
399 convert_between_encodings ("UTF-32BE", dest_charset, data,
400 4, 4, output, translit_none);
405 /* Emit a character, VALUE, which was specified numerically, to
406 OUTPUT. TYPE is the target character type. */
409 emit_numeric_character (struct type *type, unsigned long value,
410 struct obstack *output)
414 buffer = (gdb_byte *) alloca (TYPE_LENGTH (type));
415 pack_long (buffer, type, value);
416 obstack_grow (output, buffer, TYPE_LENGTH (type));
419 /* Convert an octal escape sequence. TYPE is the target character
420 type. The digits of the escape sequence begin at P and extend no
421 farther than LIMIT. The result is written to OUTPUT. Returns a
422 pointer to just after the final digit of the escape sequence. */
425 convert_octal (struct type *type, char *p,
426 char *limit, struct obstack *output)
429 unsigned long value = 0;
432 i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
435 value = 8 * value + host_hex_value (*p);
439 emit_numeric_character (type, value, output);
444 /* Convert a hex escape sequence. TYPE is the target character type.
445 The digits of the escape sequence begin at P and extend no farther
446 than LIMIT. The result is written to OUTPUT. Returns a pointer to
447 just after the final digit of the escape sequence. */
450 convert_hex (struct type *type, char *p,
451 char *limit, struct obstack *output)
453 unsigned long value = 0;
455 while (p < limit && isxdigit (*p))
457 value = 16 * value + host_hex_value (*p);
461 emit_numeric_character (type, value, output);
470 error (_("Malformed escape sequence")); \
473 /* Convert an escape sequence to a target format. TYPE is the target
474 character type to use, and DEST_CHARSET is the name of the target
475 character set. The backslash of the escape sequence is at *P, and
476 the escape sequence will not extend past LIMIT. The results are
477 written to OUTPUT. Returns a pointer to just past the final
478 character of the escape sequence. */
481 convert_escape (struct type *type, const char *dest_charset,
482 char *p, char *limit, struct obstack *output)
484 /* Skip the backslash. */
490 obstack_1grow (output, '\\');
497 error (_("\\x used with no following hex digits."));
498 p = convert_hex (type, p, limit, output);
509 p = convert_octal (type, p, limit, output);
515 int length = *p == 'u' ? 4 : 8;
519 error (_("\\u used with no following hex digits"));
520 p = convert_ucn (p, limit, dest_charset, output, length);
527 /* Given a single string from a (C-specific) OP_STRING list, convert
528 it to a target string, handling escape sequences specially. The
529 output is written to OUTPUT. DATA is the input string, which has
530 length LEN. DEST_CHARSET is the name of the target character set,
531 and TYPE is the type of target character to use. */
534 parse_one_string (struct obstack *output, char *data, int len,
535 const char *dest_charset, struct type *type)
545 /* Look for next escape, or the end of the input. */
546 while (p < limit && *p != '\\')
548 /* If we saw a run of characters, convert them all. */
550 convert_between_encodings (host_charset (), dest_charset,
551 (gdb_byte *) data, p - data, 1,
552 output, translit_none);
553 /* If we saw an escape, convert it. */
555 p = convert_escape (type, dest_charset, p, limit, output);
560 /* Expression evaluator for the C language family. Most operations
561 are delegated to evaluate_subexp_standard; see that function for a
562 description of the arguments. */
565 evaluate_subexp_c (struct type *expect_type, struct expression *exp,
566 int *pos, enum noside noside)
568 enum exp_opcode op = exp->elts[*pos].opcode;
576 struct obstack output;
577 struct cleanup *cleanup;
578 struct value *result;
579 c_string_type dest_type;
580 const char *dest_charset;
581 int satisfy_expected = 0;
583 obstack_init (&output);
584 cleanup = make_cleanup_obstack_free (&output);
587 oplen = longest_to_int (exp->elts[*pos].longconst);
590 limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
591 dest_type = ((enum c_string_type_values)
592 longest_to_int (exp->elts[*pos].longconst));
593 switch (dest_type & ~C_CHAR)
596 type = language_string_char_type (exp->language_defn,
600 type = lookup_typename (exp->language_defn, exp->gdbarch,
604 type = lookup_typename (exp->language_defn, exp->gdbarch,
605 "char16_t", NULL, 0);
608 type = lookup_typename (exp->language_defn, exp->gdbarch,
609 "char32_t", NULL, 0);
612 internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
615 /* Ensure TYPE_LENGTH is valid for TYPE. */
616 check_typedef (type);
618 /* If the caller expects an array of some integral type,
619 satisfy them. If something odder is expected, rely on the
621 if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_ARRAY)
623 struct type *element_type
624 = check_typedef (TYPE_TARGET_TYPE (expect_type));
626 if (TYPE_CODE (element_type) == TYPE_CODE_INT
627 || TYPE_CODE (element_type) == TYPE_CODE_CHAR)
630 satisfy_expected = 1;
634 dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
641 len = longest_to_int (exp->elts[*pos].longconst);
644 if (noside != EVAL_SKIP)
645 parse_one_string (&output, &exp->elts[*pos].string, len,
647 *pos += BYTES_TO_EXP_ELEM (len);
650 /* Skip the trailing length and opcode. */
653 if (noside == EVAL_SKIP)
655 /* Return a dummy value of the appropriate type. */
656 if (expect_type != NULL)
657 result = allocate_value (expect_type);
658 else if ((dest_type & C_CHAR) != 0)
659 result = allocate_value (type);
661 result = value_cstring ("", 0, type);
662 do_cleanups (cleanup);
666 if ((dest_type & C_CHAR) != 0)
670 if (obstack_object_size (&output) != TYPE_LENGTH (type))
671 error (_("Could not convert character "
672 "constant to target character set"));
673 value = unpack_long (type, (gdb_byte *) obstack_base (&output));
674 result = value_from_longest (type, value);
680 /* Write the terminating character. */
681 for (i = 0; i < TYPE_LENGTH (type); ++i)
682 obstack_1grow (&output, 0);
684 if (satisfy_expected)
686 LONGEST low_bound, high_bound;
687 int element_size = TYPE_LENGTH (type);
689 if (get_discrete_bounds (TYPE_INDEX_TYPE (expect_type),
690 &low_bound, &high_bound) < 0)
693 high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1;
695 if (obstack_object_size (&output) / element_size
696 > (high_bound - low_bound + 1))
697 error (_("Too many array elements"));
699 result = allocate_value (expect_type);
700 memcpy (value_contents_raw (result), obstack_base (&output),
701 obstack_object_size (&output));
704 result = value_cstring ((const char *) obstack_base (&output),
705 obstack_object_size (&output),
708 do_cleanups (cleanup);
716 return evaluate_subexp_standard (expect_type, exp, pos, noside);
721 /* Table mapping opcodes into strings for printing operators
722 and precedences of the operators. */
724 const struct op_print c_op_print_tab[] =
726 {",", BINOP_COMMA, PREC_COMMA, 0},
727 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
728 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
729 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
730 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
731 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
732 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
733 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
734 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
735 {"<=", BINOP_LEQ, PREC_ORDER, 0},
736 {">=", BINOP_GEQ, PREC_ORDER, 0},
737 {">", BINOP_GTR, PREC_ORDER, 0},
738 {"<", BINOP_LESS, PREC_ORDER, 0},
739 {">>", BINOP_RSH, PREC_SHIFT, 0},
740 {"<<", BINOP_LSH, PREC_SHIFT, 0},
741 {"+", BINOP_ADD, PREC_ADD, 0},
742 {"-", BINOP_SUB, PREC_ADD, 0},
743 {"*", BINOP_MUL, PREC_MUL, 0},
744 {"/", BINOP_DIV, PREC_MUL, 0},
745 {"%", BINOP_REM, PREC_MUL, 0},
746 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
747 {"+", UNOP_PLUS, PREC_PREFIX, 0},
748 {"-", UNOP_NEG, PREC_PREFIX, 0},
749 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
750 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
751 {"*", UNOP_IND, PREC_PREFIX, 0},
752 {"&", UNOP_ADDR, PREC_PREFIX, 0},
753 {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
754 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
755 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
756 {NULL, OP_NULL, PREC_PREFIX, 0}
759 enum c_primitive_types {
760 c_primitive_type_int,
761 c_primitive_type_long,
762 c_primitive_type_short,
763 c_primitive_type_char,
764 c_primitive_type_float,
765 c_primitive_type_double,
766 c_primitive_type_void,
767 c_primitive_type_long_long,
768 c_primitive_type_signed_char,
769 c_primitive_type_unsigned_char,
770 c_primitive_type_unsigned_short,
771 c_primitive_type_unsigned_int,
772 c_primitive_type_unsigned_long,
773 c_primitive_type_unsigned_long_long,
774 c_primitive_type_long_double,
775 c_primitive_type_complex,
776 c_primitive_type_double_complex,
777 c_primitive_type_decfloat,
778 c_primitive_type_decdouble,
779 c_primitive_type_declong,
784 c_language_arch_info (struct gdbarch *gdbarch,
785 struct language_arch_info *lai)
787 const struct builtin_type *builtin = builtin_type (gdbarch);
789 lai->string_char_type = builtin->builtin_char;
790 lai->primitive_type_vector
791 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
793 lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
794 lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
795 lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
796 lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
797 lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
798 lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
799 lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
800 lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
801 lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
802 lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
803 lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
804 lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
805 lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
806 lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
807 lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
808 lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
809 lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
810 lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
811 lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
812 lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
814 lai->bool_type_default = builtin->builtin_int;
817 const struct exp_descriptor exp_descriptor_c =
819 print_subexp_standard,
820 operator_length_standard,
821 operator_check_standard,
823 dump_subexp_body_standard,
827 static const char *c_extensions[] =
832 const struct language_defn c_language_defn =
834 "c", /* Language name */
846 c_printchar, /* Print a character constant */
847 c_printstr, /* Function to print string constant */
848 c_emit_char, /* Print a single char */
849 c_print_type, /* Print a type using appropriate syntax */
850 c_print_typedef, /* Print a typedef using appropriate syntax */
851 c_val_print, /* Print a value using appropriate syntax */
852 c_value_print, /* Print a top-level value */
853 default_read_var_value, /* la_read_var_value */
854 NULL, /* Language specific skip_trampoline */
855 NULL, /* name_of_this */
856 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
857 basic_lookup_transparent_type,/* lookup_transparent_type */
858 NULL, /* Language specific symbol demangler */
860 NULL, /* Language specific
861 class_name_from_physname */
862 c_op_print_tab, /* expression operators for printing */
863 1, /* c-style arrays */
864 0, /* String lower bound */
865 default_word_break_characters,
866 default_make_symbol_completion_list,
867 c_language_arch_info,
868 default_print_array_index,
869 default_pass_by_reference,
871 NULL, /* la_get_symbol_name_cmp */
872 iterate_over_symbols,
874 c_get_compile_context,
879 enum cplus_primitive_types {
880 cplus_primitive_type_int,
881 cplus_primitive_type_long,
882 cplus_primitive_type_short,
883 cplus_primitive_type_char,
884 cplus_primitive_type_float,
885 cplus_primitive_type_double,
886 cplus_primitive_type_void,
887 cplus_primitive_type_long_long,
888 cplus_primitive_type_signed_char,
889 cplus_primitive_type_unsigned_char,
890 cplus_primitive_type_unsigned_short,
891 cplus_primitive_type_unsigned_int,
892 cplus_primitive_type_unsigned_long,
893 cplus_primitive_type_unsigned_long_long,
894 cplus_primitive_type_long_double,
895 cplus_primitive_type_complex,
896 cplus_primitive_type_double_complex,
897 cplus_primitive_type_bool,
898 cplus_primitive_type_decfloat,
899 cplus_primitive_type_decdouble,
900 cplus_primitive_type_declong,
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;
957 lai->bool_type_symbol = "bool";
958 lai->bool_type_default = builtin->builtin_bool;
961 static const char *cplus_extensions[] =
963 ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL
966 const struct language_defn cplus_language_defn =
968 "c++", /* Language name */
980 c_printchar, /* Print a character constant */
981 c_printstr, /* Function to print string constant */
982 c_emit_char, /* Print a single char */
983 c_print_type, /* Print a type using appropriate syntax */
984 c_print_typedef, /* Print a typedef using appropriate syntax */
985 c_val_print, /* Print a value using appropriate syntax */
986 c_value_print, /* Print a top-level value */
987 default_read_var_value, /* la_read_var_value */
988 cplus_skip_trampoline, /* Language specific skip_trampoline */
989 "this", /* name_of_this */
990 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
991 cp_lookup_transparent_type, /* lookup_transparent_type */
992 gdb_demangle, /* Language specific symbol demangler */
993 gdb_sniff_from_mangled_name,
994 cp_class_name_from_physname, /* Language specific
995 class_name_from_physname */
996 c_op_print_tab, /* expression operators for printing */
997 1, /* c-style arrays */
998 0, /* String lower bound */
999 default_word_break_characters,
1000 default_make_symbol_completion_list,
1001 cplus_language_arch_info,
1002 default_print_array_index,
1003 cp_pass_by_reference,
1005 NULL, /* la_get_symbol_name_cmp */
1006 iterate_over_symbols,
1013 static const char *asm_extensions[] =
1015 ".s", ".sx", ".S", NULL
1018 const struct language_defn asm_language_defn =
1020 "asm", /* Language name */
1032 c_printchar, /* Print a character constant */
1033 c_printstr, /* Function to print string constant */
1034 c_emit_char, /* Print a single char */
1035 c_print_type, /* Print a type using appropriate syntax */
1036 c_print_typedef, /* Print a typedef using appropriate syntax */
1037 c_val_print, /* Print a value using appropriate syntax */
1038 c_value_print, /* Print a top-level value */
1039 default_read_var_value, /* la_read_var_value */
1040 NULL, /* Language specific skip_trampoline */
1041 NULL, /* name_of_this */
1042 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1043 basic_lookup_transparent_type,/* lookup_transparent_type */
1044 NULL, /* Language specific symbol demangler */
1046 NULL, /* Language specific
1047 class_name_from_physname */
1048 c_op_print_tab, /* expression operators for printing */
1049 1, /* c-style arrays */
1050 0, /* String lower bound */
1051 default_word_break_characters,
1052 default_make_symbol_completion_list,
1053 c_language_arch_info, /* FIXME: la_language_arch_info. */
1054 default_print_array_index,
1055 default_pass_by_reference,
1057 NULL, /* la_get_symbol_name_cmp */
1058 iterate_over_symbols,
1059 &default_varobj_ops,
1065 /* The following language_defn does not represent a real language.
1066 It just provides a minimal support a-la-C that should allow users
1067 to do some simple operations when debugging applications that use
1068 a language currently not supported by GDB. */
1070 const struct language_defn minimal_language_defn =
1072 "minimal", /* Language name */
1084 c_printchar, /* Print a character constant */
1085 c_printstr, /* Function to print string constant */
1086 c_emit_char, /* Print a single char */
1087 c_print_type, /* Print a type using appropriate syntax */
1088 c_print_typedef, /* Print a typedef using appropriate syntax */
1089 c_val_print, /* Print a value using appropriate syntax */
1090 c_value_print, /* Print a top-level value */
1091 default_read_var_value, /* la_read_var_value */
1092 NULL, /* Language specific skip_trampoline */
1093 NULL, /* name_of_this */
1094 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1095 basic_lookup_transparent_type,/* lookup_transparent_type */
1096 NULL, /* Language specific symbol demangler */
1098 NULL, /* Language specific
1099 class_name_from_physname */
1100 c_op_print_tab, /* expression operators for printing */
1101 1, /* c-style arrays */
1102 0, /* String lower bound */
1103 default_word_break_characters,
1104 default_make_symbol_completion_list,
1105 c_language_arch_info,
1106 default_print_array_index,
1107 default_pass_by_reference,
1109 NULL, /* la_get_symbol_name_cmp */
1110 iterate_over_symbols,
1111 &default_varobj_ops,
1118 _initialize_c_language (void)
1120 add_language (&c_language_defn);
1121 add_language (&cplus_language_defn);
1122 add_language (&asm_language_defn);
1123 add_language (&minimal_language_defn);