1 /* C language support routines for GDB, the GNU debugger.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003,
4 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
25 #include "parser-defs.h"
29 #include "macroscope.h"
30 #include "gdb_assert.h"
32 #include "gdb_string.h"
35 #include "cp-support.h"
36 #include "gdb_obstack.h"
39 extern void _initialize_c_language (void);
41 /* Given a C string type, STR_TYPE, return the corresponding target
42 character set name. */
45 charset_for_string_type (enum c_string_type str_type,
46 enum bfd_endian byte_order)
48 switch (str_type & ~C_CHAR)
51 return target_charset ();
53 return target_wide_charset (byte_order);
55 /* FIXME: UTF-16 is not always correct. */
56 if (byte_order == BFD_ENDIAN_BIG)
61 /* FIXME: UTF-32 is not always correct. */
62 if (byte_order == BFD_ENDIAN_BIG)
67 internal_error (__FILE__, __LINE__, "unhandled c_string_type");
70 /* Classify ELTTYPE according to what kind of character it is. Return
71 the enum constant representing the character type. Also set
72 *ENCODING to the name of the character set to use when converting
73 characters of this type in target BYTE_ORDER to the host character set. */
75 static enum c_string_type
76 classify_type (struct type *elttype, enum bfd_endian byte_order,
77 const char **encoding)
79 struct type *saved_type;
80 enum c_string_type result;
82 /* We loop because ELTTYPE may be a typedef, and we want to
83 successively peel each typedef until we reach a type we
84 understand. We don't use CHECK_TYPEDEF because that will strip
85 all typedefs at once -- but in C, wchar_t is itself a typedef, so
86 that would do the wrong thing. */
89 char *name = TYPE_NAME (elttype);
91 if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
97 if (!strcmp (name, "wchar_t"))
103 if (!strcmp (name, "char16_t"))
109 if (!strcmp (name, "char32_t"))
115 if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF)
118 /* Call for side effects. */
119 check_typedef (elttype);
121 if (TYPE_TARGET_TYPE (elttype))
122 elttype = TYPE_TARGET_TYPE (elttype);
125 /* Perhaps check_typedef did not update the target type. In
126 this case, force the lookup again and hope it works out.
127 It never will for C, but it might for C++. */
128 CHECK_TYPEDEF (elttype);
137 *encoding = charset_for_string_type (result, byte_order);
142 /* Return true if print_wchar can display W without resorting to a
143 numeric escape, false otherwise. */
146 wchar_printable (gdb_wchar_t w)
148 return (gdb_iswprint (w)
149 || w == LCST ('\a') || w == LCST ('\b')
150 || w == LCST ('\f') || w == LCST ('\n')
151 || w == LCST ('\r') || w == LCST ('\t')
152 || w == LCST ('\v'));
155 /* A helper function that converts the contents of STRING to wide
156 characters and then appends them to OUTPUT. */
159 append_string_as_wide (const char *string, struct obstack *output)
161 for (; *string; ++string)
163 gdb_wchar_t w = gdb_btowc (*string);
164 obstack_grow (output, &w, sizeof (gdb_wchar_t));
168 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
169 original (target) bytes representing the character, ORIG_LEN is the
170 number of valid bytes. WIDTH is the number of bytes in a base
171 characters of the type. OUTPUT is an obstack to which wide
172 characters are emitted. QUOTER is a (narrow) character indicating
173 the style of quotes surrounding the character to be printed.
174 NEED_ESCAPE is an in/out flag which is used to track numeric
175 escapes across calls. */
178 print_wchar (gdb_wint_t w, const gdb_byte *orig, int orig_len,
179 int width, enum bfd_endian byte_order, struct obstack *output,
180 int quoter, int *need_escapep)
182 int need_escape = *need_escapep;
184 if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w)
186 && w != LCST ('9'))))
188 gdb_wchar_t wchar = w;
190 if (w == gdb_btowc (quoter) || w == LCST ('\\'))
191 obstack_grow_wstr (output, LCST ("\\"));
192 obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
199 obstack_grow_wstr (output, LCST ("\\a"));
202 obstack_grow_wstr (output, LCST ("\\b"));
205 obstack_grow_wstr (output, LCST ("\\f"));
208 obstack_grow_wstr (output, LCST ("\\n"));
211 obstack_grow_wstr (output, LCST ("\\r"));
214 obstack_grow_wstr (output, LCST ("\\t"));
217 obstack_grow_wstr (output, LCST ("\\v"));
223 for (i = 0; i + width <= orig_len; i += width)
227 value = extract_unsigned_integer (&orig[i], width, byte_order);
228 /* If the value fits in 3 octal digits, print it that
229 way. Otherwise, print it as a hex escape. */
231 sprintf (octal, "\\%.3o", (int) (value & 0777));
233 sprintf (octal, "\\x%lx", (long) value);
234 append_string_as_wide (octal, output);
236 /* If we somehow have extra bytes, print them now. */
240 sprintf (octal, "\\%.3o", orig[i] & 0xff);
241 append_string_as_wide (octal, output);
252 /* Print the character C on STREAM as part of the contents of a literal
253 string whose delimiter is QUOTER. Note that that format for printing
254 characters and strings is language specific. */
257 c_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
259 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
260 struct obstack wchar_buf, output;
261 struct cleanup *cleanups;
262 const char *encoding;
264 struct wchar_iterator *iter;
267 classify_type (type, byte_order, &encoding);
269 buf = alloca (TYPE_LENGTH (type));
270 pack_long (buf, type, c);
272 iter = make_wchar_iterator (buf, TYPE_LENGTH (type), encoding,
274 cleanups = make_cleanup_wchar_iterator (iter);
276 /* This holds the printable form of the wchar_t data. */
277 obstack_init (&wchar_buf);
278 make_cleanup_obstack_free (&wchar_buf);
286 int print_escape = 1;
287 enum wchar_iterate_result result;
289 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
294 /* If all characters are printable, print them. Otherwise,
295 we're going to have to print an escape sequence. We
296 check all characters because we want to print the target
297 bytes in the escape sequence, and we don't know character
302 for (i = 0; i < num_chars; ++i)
303 if (!wchar_printable (chars[i]))
311 for (i = 0; i < num_chars; ++i)
312 print_wchar (chars[i], buf, buflen, TYPE_LENGTH (type),
313 byte_order, &wchar_buf, quoter, &need_escape);
317 /* This handles the NUM_CHARS == 0 case as well. */
319 print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), byte_order,
320 &wchar_buf, quoter, &need_escape);
323 /* The output in the host encoding. */
324 obstack_init (&output);
325 make_cleanup_obstack_free (&output);
327 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
328 obstack_base (&wchar_buf),
329 obstack_object_size (&wchar_buf),
330 1, &output, translit_char);
331 obstack_1grow (&output, '\0');
333 fputs_filtered (obstack_base (&output), stream);
335 do_cleanups (cleanups);
339 c_printchar (int c, struct type *type, struct ui_file *stream)
341 enum c_string_type str_type;
343 str_type = classify_type (type, BFD_ENDIAN_UNKNOWN, NULL);
349 fputc_filtered ('L', stream);
352 fputc_filtered ('u', stream);
355 fputc_filtered ('U', stream);
359 fputc_filtered ('\'', stream);
360 LA_EMIT_CHAR (c, type, stream, '\'');
361 fputc_filtered ('\'', stream);
364 /* Print the character string STRING, printing at most LENGTH characters.
365 LENGTH is -1 if the string is nul terminated. Each character is WIDTH bytes
366 long. Printing stops early if the number hits print_max; repeat counts are
367 printed as appropriate. Print ellipses at the end if we had to stop before
368 printing LENGTH characters, or if FORCE_ELLIPSES. */
371 c_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
372 unsigned int length, int force_ellipses,
373 const struct value_print_options *options)
375 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
377 unsigned int things_printed = 0;
380 int width = TYPE_LENGTH (type);
381 struct obstack wchar_buf, output;
382 struct cleanup *cleanup;
383 enum c_string_type str_type;
384 const char *encoding;
385 struct wchar_iterator *iter;
389 /* If the string was not truncated due to `set print elements', and
390 the last byte of it is a null, we don't print that, in traditional C
394 && (extract_unsigned_integer (string + (length - 1) * width,
395 width, byte_order) == 0))
398 str_type = classify_type (type, byte_order, &encoding) & ~C_CHAR;
404 fputs_filtered ("L", stream);
407 fputs_filtered ("u", stream);
410 fputs_filtered ("U", stream);
416 fputs_filtered ("\"\"", stream);
422 unsigned long current_char = 1;
423 for (i = 0; current_char; ++i)
426 current_char = extract_unsigned_integer (string + i * width,
432 /* Arrange to iterate over the characters, in wchar_t form. */
433 iter = make_wchar_iterator (string, length * width, encoding, width);
434 cleanup = make_cleanup_wchar_iterator (iter);
436 /* WCHAR_BUF is the obstack we use to represent the string in
438 obstack_init (&wchar_buf);
439 make_cleanup_obstack_free (&wchar_buf);
441 while (!finished && things_printed < options->print_max)
444 enum wchar_iterate_result result;
453 obstack_grow_wstr (&wchar_buf, LCST (", "));
457 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
458 /* We only look at repetitions when we were able to convert a
459 single character in isolation. This makes the code simpler
460 and probably does the sensible thing in the majority of
462 while (num_chars == 1 && things_printed < options->print_max)
464 /* Count the number of repetitions. */
465 unsigned int reps = 0;
466 gdb_wchar_t current_char = chars[0];
467 const gdb_byte *orig_buf = buf;
468 int orig_len = buflen;
472 obstack_grow_wstr (&wchar_buf, LCST (", "));
476 while (num_chars == 1 && current_char == chars[0])
478 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
482 /* Emit CURRENT_CHAR according to the repetition count and
484 if (reps > options->repeat_count_threshold)
488 if (options->inspect_it)
489 obstack_grow_wstr (&wchar_buf, LCST ("\\\", "));
491 obstack_grow_wstr (&wchar_buf, LCST ("\", "));
494 obstack_grow_wstr (&wchar_buf, LCST ("'"));
496 print_wchar (current_char, orig_buf, orig_len, width,
497 byte_order, &wchar_buf, '\'', &need_escape);
498 obstack_grow_wstr (&wchar_buf, LCST ("'"));
500 /* Painful gyrations. */
502 char *s = xstrprintf (_(" <repeats %u times>"), reps);
503 for (j = 0; s[j]; ++j)
505 gdb_wchar_t w = gdb_btowc (s[j]);
506 obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t));
510 things_printed += options->repeat_count_threshold;
515 /* Saw the character one or more times, but fewer than
516 the repetition threshold. */
519 if (options->inspect_it)
520 obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
522 obstack_grow_wstr (&wchar_buf, LCST ("\""));
529 print_wchar (current_char, orig_buf, orig_len, width,
530 byte_order, &wchar_buf, '"', &need_escape);
536 /* NUM_CHARS and the other outputs from wchar_iterate are valid
537 here regardless of which branch was taken above. */
547 case wchar_iterate_invalid:
550 if (options->inspect_it)
551 obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
553 obstack_grow_wstr (&wchar_buf, LCST ("\""));
557 print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
561 case wchar_iterate_incomplete:
564 if (options->inspect_it)
565 obstack_grow_wstr (&wchar_buf, LCST ("\\\","));
567 obstack_grow_wstr (&wchar_buf, LCST ("\","));
570 obstack_grow_wstr (&wchar_buf, LCST (" <incomplete sequence "));
571 print_wchar (gdb_WEOF, buf, buflen, width, byte_order, &wchar_buf,
573 obstack_grow_wstr (&wchar_buf, LCST (">"));
579 /* Terminate the quotes if necessary. */
582 if (options->inspect_it)
583 obstack_grow_wstr (&wchar_buf, LCST ("\\\""));
585 obstack_grow_wstr (&wchar_buf, LCST ("\""));
588 if (force_ellipses || !finished)
589 obstack_grow_wstr (&wchar_buf, LCST ("..."));
591 /* OUTPUT is where we collect `char's for printing. */
592 obstack_init (&output);
593 make_cleanup_obstack_free (&output);
595 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
596 obstack_base (&wchar_buf),
597 obstack_object_size (&wchar_buf),
598 1, &output, translit_char);
599 obstack_1grow (&output, '\0');
601 fputs_filtered (obstack_base (&output), stream);
603 do_cleanups (cleanup);
606 /* Obtain a C string from the inferior storing it in a newly allocated
607 buffer in BUFFER, which should be freed by the caller. If the
608 in- and out-parameter *LENGTH is specified at -1, the string is read
609 until a null character of the appropriate width is found, otherwise
610 the string is read to the length of characters specified.
611 The size of a character is determined by the length of the target
612 type of the pointer or array. If VALUE is an array with a known
613 length, the function will not read past the end of the array.
614 On completion, *LENGTH will be set to the size of the string read in
615 characters. (If a length of -1 is specified, the length returned
616 will not include the null character). CHARSET is always set to the
620 c_get_string (struct value *value, gdb_byte **buffer, int *length,
621 struct type **char_type, const char **charset)
624 unsigned int fetchlimit;
625 struct type *type = check_typedef (value_type (value));
626 struct type *element_type = TYPE_TARGET_TYPE (type);
627 int req_length = *length;
628 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
629 enum c_string_type kind;
631 if (element_type == NULL)
634 if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
636 /* If we know the size of the array, we can use it as a limit on the
637 number of characters to be fetched. */
638 if (TYPE_NFIELDS (type) == 1
639 && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE)
641 LONGEST low_bound, high_bound;
643 get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
644 &low_bound, &high_bound);
645 fetchlimit = high_bound - low_bound + 1;
648 fetchlimit = UINT_MAX;
650 else if (TYPE_CODE (type) == TYPE_CODE_PTR)
651 fetchlimit = UINT_MAX;
653 /* We work only with arrays and pointers. */
656 if (! c_textual_element_type (element_type, 0))
658 kind = classify_type (element_type,
659 gdbarch_byte_order (get_type_arch (element_type)),
661 width = TYPE_LENGTH (element_type);
663 /* If the string lives in GDB's memory instead of the inferior's, then we
664 just need to copy it to BUFFER. Also, since such strings are arrays
665 with known size, FETCHLIMIT will hold the size of the array. */
666 if ((VALUE_LVAL (value) == not_lval
667 || VALUE_LVAL (value) == lval_internalvar)
668 && fetchlimit != UINT_MAX)
671 const gdb_byte *contents = value_contents (value);
673 /* If a length is specified, use that. */
677 /* Otherwise, look for a null character. */
678 for (i = 0; i < fetchlimit; i++)
679 if (extract_unsigned_integer (contents + i * width, width,
683 /* I is now either a user-defined length, the number of non-null
684 characters, or FETCHLIMIT. */
686 *buffer = xmalloc (*length);
687 memcpy (*buffer, contents, *length);
692 err = read_string (value_as_address (value), *length, width, fetchlimit,
693 byte_order, buffer, length);
697 error (_("Error reading string from inferior: %s"),
698 safe_strerror (err));
702 /* If the LENGTH is specified at -1, we want to return the string
703 length up to the terminating null character. If an actual length
704 was specified, we want to return the length of exactly what was
706 if (req_length == -1)
707 /* If the last character is null, subtract it from LENGTH. */
709 && extract_unsigned_integer (*buffer + *length - width, width,
713 /* The read_string function will return the number of bytes read.
714 If length returned from read_string was > 0, return the number of
715 characters read by dividing the number of bytes by width. */
717 *length = *length / width;
719 *char_type = element_type;
727 type_str = type_to_string (type);
730 make_cleanup (xfree, type_str);
731 error (_("Trying to read string with inappropriate type `%s'."),
735 error (_("Trying to read string with inappropriate type."));
740 /* Evaluating C and C++ expressions. */
742 /* Convert a UCN. The digits of the UCN start at P and extend no
743 farther than LIMIT. DEST_CHARSET is the name of the character set
744 into which the UCN should be converted. The results are written to
745 OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8.
746 Returns a pointer to just after the final digit of the UCN. */
749 convert_ucn (char *p, char *limit, const char *dest_charset,
750 struct obstack *output, int length)
752 unsigned long result = 0;
756 for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p)
757 result = (result << 4) + host_hex_value (*p);
759 for (i = 3; i >= 0; --i)
761 data[i] = result & 0xff;
765 convert_between_encodings ("UTF-32BE", dest_charset, data, 4, 4, output,
771 /* Emit a character, VALUE, which was specified numerically, to
772 OUTPUT. TYPE is the target character type. */
775 emit_numeric_character (struct type *type, unsigned long value,
776 struct obstack *output)
780 buffer = alloca (TYPE_LENGTH (type));
781 pack_long (buffer, type, value);
782 obstack_grow (output, buffer, TYPE_LENGTH (type));
785 /* Convert an octal escape sequence. TYPE is the target character
786 type. The digits of the escape sequence begin at P and extend no
787 farther than LIMIT. The result is written to OUTPUT. Returns a
788 pointer to just after the final digit of the escape sequence. */
791 convert_octal (struct type *type, char *p, char *limit, struct obstack *output)
794 unsigned long value = 0;
797 i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
800 value = 8 * value + host_hex_value (*p);
804 emit_numeric_character (type, value, output);
809 /* Convert a hex escape sequence. TYPE is the target character type.
810 The digits of the escape sequence begin at P and extend no farther
811 than LIMIT. The result is written to OUTPUT. Returns a pointer to
812 just after the final digit of the escape sequence. */
815 convert_hex (struct type *type, char *p, char *limit, struct obstack *output)
817 unsigned long value = 0;
819 while (p < limit && isxdigit (*p))
821 value = 16 * value + host_hex_value (*p);
825 emit_numeric_character (type, value, output);
834 error (_("Malformed escape sequence")); \
837 /* Convert an escape sequence to a target format. TYPE is the target
838 character type to use, and DEST_CHARSET is the name of the target
839 character set. The backslash of the escape sequence is at *P, and
840 the escape sequence will not extend past LIMIT. The results are
841 written to OUTPUT. Returns a pointer to just past the final
842 character of the escape sequence. */
845 convert_escape (struct type *type, const char *dest_charset,
846 char *p, char *limit, struct obstack *output)
848 /* Skip the backslash. */
854 obstack_1grow (output, '\\');
861 error (_("\\x used with no following hex digits."));
862 p = convert_hex (type, p, limit, output);
873 p = convert_octal (type, p, limit, output);
879 int length = *p == 'u' ? 4 : 8;
882 error (_("\\u used with no following hex digits"));
883 p = convert_ucn (p, limit, dest_charset, output, length);
890 /* Given a single string from a (C-specific) OP_STRING list, convert
891 it to a target string, handling escape sequences specially. The
892 output is written to OUTPUT. DATA is the input string, which has
893 length LEN. DEST_CHARSET is the name of the target character set,
894 and TYPE is the type of target character to use. */
897 parse_one_string (struct obstack *output, char *data, int len,
898 const char *dest_charset, struct type *type)
907 /* Look for next escape, or the end of the input. */
908 while (p < limit && *p != '\\')
910 /* If we saw a run of characters, convert them all. */
912 convert_between_encodings (host_charset (), dest_charset,
913 data, p - data, 1, output, translit_none);
914 /* If we saw an escape, convert it. */
916 p = convert_escape (type, dest_charset, p, limit, output);
921 /* Expression evaluator for the C language family. Most operations
922 are delegated to evaluate_subexp_standard; see that function for a
923 description of the arguments. */
925 static struct value *
926 evaluate_subexp_c (struct type *expect_type, struct expression *exp,
927 int *pos, enum noside noside)
929 enum exp_opcode op = exp->elts[*pos].opcode;
937 struct obstack output;
938 struct cleanup *cleanup;
939 struct value *result;
940 enum c_string_type dest_type;
941 const char *dest_charset;
942 enum bfd_endian byte_order;
944 obstack_init (&output);
945 cleanup = make_cleanup_obstack_free (&output);
948 oplen = longest_to_int (exp->elts[*pos].longconst);
951 limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
953 = (enum c_string_type) longest_to_int (exp->elts[*pos].longconst);
954 switch (dest_type & ~C_CHAR)
957 type = language_string_char_type (exp->language_defn,
961 type = lookup_typename (exp->language_defn, exp->gdbarch,
965 type = lookup_typename (exp->language_defn, exp->gdbarch,
966 "char16_t", NULL, 0);
969 type = lookup_typename (exp->language_defn, exp->gdbarch,
970 "char32_t", NULL, 0);
973 internal_error (__FILE__, __LINE__, "unhandled c_string_type");
976 /* Ensure TYPE_LENGTH is valid for TYPE. */
977 check_typedef (type);
979 byte_order = gdbarch_byte_order (exp->gdbarch);
980 dest_charset = charset_for_string_type (dest_type, byte_order);
987 len = longest_to_int (exp->elts[*pos].longconst);
990 if (noside != EVAL_SKIP)
991 parse_one_string (&output, &exp->elts[*pos].string, len,
993 *pos += BYTES_TO_EXP_ELEM (len);
996 /* Skip the trailing length and opcode. */
999 if (noside == EVAL_SKIP)
1001 /* Return a dummy value of the appropriate type. */
1002 if ((dest_type & C_CHAR) != 0)
1003 result = allocate_value (type);
1005 result = value_cstring ("", 0, type);
1006 do_cleanups (cleanup);
1010 if ((dest_type & C_CHAR) != 0)
1014 if (obstack_object_size (&output) != TYPE_LENGTH (type))
1015 error (_("Could not convert character constant to target character set"));
1016 value = unpack_long (type, obstack_base (&output));
1017 result = value_from_longest (type, value);
1022 /* Write the terminating character. */
1023 for (i = 0; i < TYPE_LENGTH (type); ++i)
1024 obstack_1grow (&output, 0);
1025 result = value_cstring (obstack_base (&output),
1026 obstack_object_size (&output),
1029 do_cleanups (cleanup);
1037 return evaluate_subexp_standard (expect_type, exp, pos, noside);
1042 /* Table mapping opcodes into strings for printing operators
1043 and precedences of the operators. */
1045 const struct op_print c_op_print_tab[] =
1047 {",", BINOP_COMMA, PREC_COMMA, 0},
1048 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1049 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1050 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1051 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1052 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1053 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1054 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1055 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1056 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1057 {">=", BINOP_GEQ, PREC_ORDER, 0},
1058 {">", BINOP_GTR, PREC_ORDER, 0},
1059 {"<", BINOP_LESS, PREC_ORDER, 0},
1060 {">>", BINOP_RSH, PREC_SHIFT, 0},
1061 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1062 {"+", BINOP_ADD, PREC_ADD, 0},
1063 {"-", BINOP_SUB, PREC_ADD, 0},
1064 {"*", BINOP_MUL, PREC_MUL, 0},
1065 {"/", BINOP_DIV, PREC_MUL, 0},
1066 {"%", BINOP_REM, PREC_MUL, 0},
1067 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
1068 {"-", UNOP_NEG, PREC_PREFIX, 0},
1069 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1070 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1071 {"*", UNOP_IND, PREC_PREFIX, 0},
1072 {"&", UNOP_ADDR, PREC_PREFIX, 0},
1073 {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
1074 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1075 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1079 enum c_primitive_types {
1080 c_primitive_type_int,
1081 c_primitive_type_long,
1082 c_primitive_type_short,
1083 c_primitive_type_char,
1084 c_primitive_type_float,
1085 c_primitive_type_double,
1086 c_primitive_type_void,
1087 c_primitive_type_long_long,
1088 c_primitive_type_signed_char,
1089 c_primitive_type_unsigned_char,
1090 c_primitive_type_unsigned_short,
1091 c_primitive_type_unsigned_int,
1092 c_primitive_type_unsigned_long,
1093 c_primitive_type_unsigned_long_long,
1094 c_primitive_type_long_double,
1095 c_primitive_type_complex,
1096 c_primitive_type_double_complex,
1097 c_primitive_type_decfloat,
1098 c_primitive_type_decdouble,
1099 c_primitive_type_declong,
1100 nr_c_primitive_types
1104 c_language_arch_info (struct gdbarch *gdbarch,
1105 struct language_arch_info *lai)
1107 const struct builtin_type *builtin = builtin_type (gdbarch);
1108 lai->string_char_type = builtin->builtin_char;
1109 lai->primitive_type_vector
1110 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
1112 lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
1113 lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
1114 lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
1115 lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
1116 lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
1117 lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
1118 lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
1119 lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
1120 lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
1121 lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
1122 lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
1123 lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
1124 lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
1125 lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
1126 lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
1127 lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
1128 lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
1129 lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
1130 lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
1131 lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
1133 lai->bool_type_default = builtin->builtin_int;
1136 static const struct exp_descriptor exp_descriptor_c =
1138 print_subexp_standard,
1139 operator_length_standard,
1141 dump_subexp_body_standard,
1145 const struct language_defn c_language_defn =
1147 "c", /* Language name */
1158 c_printchar, /* Print a character constant */
1159 c_printstr, /* Function to print string constant */
1160 c_emit_char, /* Print a single char */
1161 c_print_type, /* Print a type using appropriate syntax */
1162 c_print_typedef, /* Print a typedef using appropriate syntax */
1163 c_val_print, /* Print a value using appropriate syntax */
1164 c_value_print, /* Print a top-level value */
1165 NULL, /* Language specific skip_trampoline */
1166 NULL, /* name_of_this */
1167 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1168 basic_lookup_transparent_type,/* lookup_transparent_type */
1169 NULL, /* Language specific symbol demangler */
1170 NULL, /* Language specific class_name_from_physname */
1171 c_op_print_tab, /* expression operators for printing */
1172 1, /* c-style arrays */
1173 0, /* String lower bound */
1174 default_word_break_characters,
1175 default_make_symbol_completion_list,
1176 c_language_arch_info,
1177 default_print_array_index,
1178 default_pass_by_reference,
1183 enum cplus_primitive_types {
1184 cplus_primitive_type_int,
1185 cplus_primitive_type_long,
1186 cplus_primitive_type_short,
1187 cplus_primitive_type_char,
1188 cplus_primitive_type_float,
1189 cplus_primitive_type_double,
1190 cplus_primitive_type_void,
1191 cplus_primitive_type_long_long,
1192 cplus_primitive_type_signed_char,
1193 cplus_primitive_type_unsigned_char,
1194 cplus_primitive_type_unsigned_short,
1195 cplus_primitive_type_unsigned_int,
1196 cplus_primitive_type_unsigned_long,
1197 cplus_primitive_type_unsigned_long_long,
1198 cplus_primitive_type_long_double,
1199 cplus_primitive_type_complex,
1200 cplus_primitive_type_double_complex,
1201 cplus_primitive_type_bool,
1202 cplus_primitive_type_decfloat,
1203 cplus_primitive_type_decdouble,
1204 cplus_primitive_type_declong,
1205 nr_cplus_primitive_types
1209 cplus_language_arch_info (struct gdbarch *gdbarch,
1210 struct language_arch_info *lai)
1212 const struct builtin_type *builtin = builtin_type (gdbarch);
1213 lai->string_char_type = builtin->builtin_char;
1214 lai->primitive_type_vector
1215 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
1217 lai->primitive_type_vector [cplus_primitive_type_int]
1218 = builtin->builtin_int;
1219 lai->primitive_type_vector [cplus_primitive_type_long]
1220 = builtin->builtin_long;
1221 lai->primitive_type_vector [cplus_primitive_type_short]
1222 = builtin->builtin_short;
1223 lai->primitive_type_vector [cplus_primitive_type_char]
1224 = builtin->builtin_char;
1225 lai->primitive_type_vector [cplus_primitive_type_float]
1226 = builtin->builtin_float;
1227 lai->primitive_type_vector [cplus_primitive_type_double]
1228 = builtin->builtin_double;
1229 lai->primitive_type_vector [cplus_primitive_type_void]
1230 = builtin->builtin_void;
1231 lai->primitive_type_vector [cplus_primitive_type_long_long]
1232 = builtin->builtin_long_long;
1233 lai->primitive_type_vector [cplus_primitive_type_signed_char]
1234 = builtin->builtin_signed_char;
1235 lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
1236 = builtin->builtin_unsigned_char;
1237 lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
1238 = builtin->builtin_unsigned_short;
1239 lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
1240 = builtin->builtin_unsigned_int;
1241 lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
1242 = builtin->builtin_unsigned_long;
1243 lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
1244 = builtin->builtin_unsigned_long_long;
1245 lai->primitive_type_vector [cplus_primitive_type_long_double]
1246 = builtin->builtin_long_double;
1247 lai->primitive_type_vector [cplus_primitive_type_complex]
1248 = builtin->builtin_complex;
1249 lai->primitive_type_vector [cplus_primitive_type_double_complex]
1250 = builtin->builtin_double_complex;
1251 lai->primitive_type_vector [cplus_primitive_type_bool]
1252 = builtin->builtin_bool;
1253 lai->primitive_type_vector [cplus_primitive_type_decfloat]
1254 = builtin->builtin_decfloat;
1255 lai->primitive_type_vector [cplus_primitive_type_decdouble]
1256 = builtin->builtin_decdouble;
1257 lai->primitive_type_vector [cplus_primitive_type_declong]
1258 = builtin->builtin_declong;
1260 lai->bool_type_symbol = "bool";
1261 lai->bool_type_default = builtin->builtin_bool;
1264 const struct language_defn cplus_language_defn =
1266 "c++", /* Language name */
1277 c_printchar, /* Print a character constant */
1278 c_printstr, /* Function to print string constant */
1279 c_emit_char, /* Print a single char */
1280 c_print_type, /* Print a type using appropriate syntax */
1281 c_print_typedef, /* Print a typedef using appropriate syntax */
1282 c_val_print, /* Print a value using appropriate syntax */
1283 c_value_print, /* Print a top-level value */
1284 cplus_skip_trampoline, /* Language specific skip_trampoline */
1285 "this", /* name_of_this */
1286 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1287 cp_lookup_transparent_type, /* lookup_transparent_type */
1288 cplus_demangle, /* Language specific symbol demangler */
1289 cp_class_name_from_physname, /* Language specific class_name_from_physname */
1290 c_op_print_tab, /* expression operators for printing */
1291 1, /* c-style arrays */
1292 0, /* String lower bound */
1293 default_word_break_characters,
1294 default_make_symbol_completion_list,
1295 cplus_language_arch_info,
1296 default_print_array_index,
1297 cp_pass_by_reference,
1302 const struct language_defn asm_language_defn =
1304 "asm", /* Language name */
1315 c_printchar, /* Print a character constant */
1316 c_printstr, /* Function to print string constant */
1317 c_emit_char, /* Print a single char */
1318 c_print_type, /* Print a type using appropriate syntax */
1319 c_print_typedef, /* Print a typedef using appropriate syntax */
1320 c_val_print, /* Print a value using appropriate syntax */
1321 c_value_print, /* Print a top-level value */
1322 NULL, /* Language specific skip_trampoline */
1323 NULL, /* name_of_this */
1324 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1325 basic_lookup_transparent_type,/* lookup_transparent_type */
1326 NULL, /* Language specific symbol demangler */
1327 NULL, /* Language specific class_name_from_physname */
1328 c_op_print_tab, /* expression operators for printing */
1329 1, /* c-style arrays */
1330 0, /* String lower bound */
1331 default_word_break_characters,
1332 default_make_symbol_completion_list,
1333 c_language_arch_info, /* FIXME: la_language_arch_info. */
1334 default_print_array_index,
1335 default_pass_by_reference,
1340 /* The following language_defn does not represent a real language.
1341 It just provides a minimal support a-la-C that should allow users
1342 to do some simple operations when debugging applications that use
1343 a language currently not supported by GDB. */
1345 const struct language_defn minimal_language_defn =
1347 "minimal", /* Language name */
1358 c_printchar, /* Print a character constant */
1359 c_printstr, /* Function to print string constant */
1360 c_emit_char, /* Print a single char */
1361 c_print_type, /* Print a type using appropriate syntax */
1362 c_print_typedef, /* Print a typedef using appropriate syntax */
1363 c_val_print, /* Print a value using appropriate syntax */
1364 c_value_print, /* Print a top-level value */
1365 NULL, /* Language specific skip_trampoline */
1366 NULL, /* name_of_this */
1367 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1368 basic_lookup_transparent_type,/* lookup_transparent_type */
1369 NULL, /* Language specific symbol demangler */
1370 NULL, /* Language specific class_name_from_physname */
1371 c_op_print_tab, /* expression operators for printing */
1372 1, /* c-style arrays */
1373 0, /* String lower bound */
1374 default_word_break_characters,
1375 default_make_symbol_completion_list,
1376 c_language_arch_info,
1377 default_print_array_index,
1378 default_pass_by_reference,
1384 _initialize_c_language (void)
1386 add_language (&c_language_defn);
1387 add_language (&cplus_language_defn);
1388 add_language (&asm_language_defn);
1389 add_language (&minimal_language_defn);