| /* C language support routines for GDB, the GNU debugger. |
| |
| Copyright (C) 1992-2018 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "parser-defs.h" |
| #include "language.h" |
| #include "varobj.h" |
| #include "c-lang.h" |
| #include "c-support.h" |
| #include "valprint.h" |
| #include "macroscope.h" |
| #include "charset.h" |
| #include "demangle.h" |
| #include "cp-abi.h" |
| #include "cp-support.h" |
| #include "gdb_obstack.h" |
| #include <ctype.h> |
| #include "gdbcore.h" |
| |
| /* Given a C string type, STR_TYPE, return the corresponding target |
| character set name. */ |
| |
| static const char * |
| charset_for_string_type (c_string_type str_type, struct gdbarch *gdbarch) |
| { |
| switch (str_type & ~C_CHAR) |
| { |
| case C_STRING: |
| return target_charset (gdbarch); |
| case C_WIDE_STRING: |
| return target_wide_charset (gdbarch); |
| case C_STRING_16: |
| /* FIXME: UTF-16 is not always correct. */ |
| if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| return "UTF-16BE"; |
| else |
| return "UTF-16LE"; |
| case C_STRING_32: |
| /* FIXME: UTF-32 is not always correct. */ |
| if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| return "UTF-32BE"; |
| else |
| return "UTF-32LE"; |
| } |
| internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| } |
| |
| /* Classify ELTTYPE according to what kind of character it is. Return |
| the enum constant representing the character type. Also set |
| *ENCODING to the name of the character set to use when converting |
| characters of this type in target BYTE_ORDER to the host character |
| set. */ |
| |
| static c_string_type |
| classify_type (struct type *elttype, struct gdbarch *gdbarch, |
| const char **encoding) |
| { |
| c_string_type result; |
| |
| /* We loop because ELTTYPE may be a typedef, and we want to |
| successively peel each typedef until we reach a type we |
| understand. We don't use CHECK_TYPEDEF because that will strip |
| all typedefs at once -- but in C, wchar_t is itself a typedef, so |
| that would do the wrong thing. */ |
| while (elttype) |
| { |
| const char *name = TYPE_NAME (elttype); |
| |
| if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name) |
| { |
| result = C_CHAR; |
| goto done; |
| } |
| |
| if (!strcmp (name, "wchar_t")) |
| { |
| result = C_WIDE_CHAR; |
| goto done; |
| } |
| |
| if (!strcmp (name, "char16_t")) |
| { |
| result = C_CHAR_16; |
| goto done; |
| } |
| |
| if (!strcmp (name, "char32_t")) |
| { |
| result = C_CHAR_32; |
| goto done; |
| } |
| |
| if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF) |
| break; |
| |
| /* Call for side effects. */ |
| check_typedef (elttype); |
| |
| if (TYPE_TARGET_TYPE (elttype)) |
| elttype = TYPE_TARGET_TYPE (elttype); |
| else |
| { |
| /* Perhaps check_typedef did not update the target type. In |
| this case, force the lookup again and hope it works out. |
| It never will for C, but it might for C++. */ |
| elttype = check_typedef (elttype); |
| } |
| } |
| |
| /* Punt. */ |
| result = C_CHAR; |
| |
| done: |
| if (encoding) |
| *encoding = charset_for_string_type (result, gdbarch); |
| |
| return result; |
| } |
| |
| /* Print the character C on STREAM as part of the contents of a |
| literal string whose delimiter is QUOTER. Note that that format |
| for printing characters and strings is language specific. */ |
| |
| void |
| c_emit_char (int c, struct type *type, |
| struct ui_file *stream, int quoter) |
| { |
| const char *encoding; |
| |
| classify_type (type, get_type_arch (type), &encoding); |
| generic_emit_char (c, type, stream, quoter, encoding); |
| } |
| |
| void |
| c_printchar (int c, struct type *type, struct ui_file *stream) |
| { |
| c_string_type str_type; |
| |
| str_type = classify_type (type, get_type_arch (type), NULL); |
| switch (str_type) |
| { |
| case C_CHAR: |
| break; |
| case C_WIDE_CHAR: |
| fputc_filtered ('L', stream); |
| break; |
| case C_CHAR_16: |
| fputc_filtered ('u', stream); |
| break; |
| case C_CHAR_32: |
| fputc_filtered ('U', stream); |
| break; |
| } |
| |
| fputc_filtered ('\'', stream); |
| LA_EMIT_CHAR (c, type, stream, '\''); |
| fputc_filtered ('\'', stream); |
| } |
| |
| /* Print the character string STRING, printing at most LENGTH |
| characters. LENGTH is -1 if the string is nul terminated. Each |
| character is WIDTH bytes long. Printing stops early if the number |
| hits print_max; repeat counts are printed as appropriate. Print |
| ellipses at the end if we had to stop before printing LENGTH |
| characters, or if FORCE_ELLIPSES. */ |
| |
| void |
| c_printstr (struct ui_file *stream, struct type *type, |
| const gdb_byte *string, unsigned int length, |
| const char *user_encoding, int force_ellipses, |
| const struct value_print_options *options) |
| { |
| c_string_type str_type; |
| const char *type_encoding; |
| const char *encoding; |
| |
| str_type = (classify_type (type, get_type_arch (type), &type_encoding) |
| & ~C_CHAR); |
| switch (str_type) |
| { |
| case C_STRING: |
| break; |
| case C_WIDE_STRING: |
| fputs_filtered ("L", stream); |
| break; |
| case C_STRING_16: |
| fputs_filtered ("u", stream); |
| break; |
| case C_STRING_32: |
| fputs_filtered ("U", stream); |
| break; |
| } |
| |
| encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding; |
| |
| generic_printstr (stream, type, string, length, encoding, force_ellipses, |
| '"', 1, options); |
| } |
| |
| /* Obtain a C string from the inferior storing it in a newly allocated |
| buffer in BUFFER, which should be freed by the caller. If the in- |
| and out-parameter *LENGTH is specified at -1, the string is read |
| until a null character of the appropriate width is found, otherwise |
| the string is read to the length of characters specified. The size |
| of a character is determined by the length of the target type of |
| the pointer or array. |
| |
| If VALUE is an array with a known length, and *LENGTH is -1, |
| the function will not read past the end of the array. However, any |
| declared size of the array is ignored if *LENGTH > 0. |
| |
| On completion, *LENGTH will be set to the size of the string read in |
| characters. (If a length of -1 is specified, the length returned |
| will not include the null character). CHARSET is always set to the |
| target charset. */ |
| |
| void |
| c_get_string (struct value *value, gdb::unique_xmalloc_ptr<gdb_byte> *buffer, |
| int *length, struct type **char_type, |
| const char **charset) |
| { |
| int err, width; |
| unsigned int fetchlimit; |
| struct type *type = check_typedef (value_type (value)); |
| struct type *element_type = TYPE_TARGET_TYPE (type); |
| int req_length = *length; |
| enum bfd_endian byte_order |
| = gdbarch_byte_order (get_type_arch (type)); |
| |
| if (element_type == NULL) |
| goto error; |
| |
| if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| { |
| /* If we know the size of the array, we can use it as a limit on |
| the number of characters to be fetched. */ |
| if (TYPE_NFIELDS (type) == 1 |
| && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE) |
| { |
| LONGEST low_bound, high_bound; |
| |
| get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
| &low_bound, &high_bound); |
| fetchlimit = high_bound - low_bound + 1; |
| } |
| else |
| fetchlimit = UINT_MAX; |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| fetchlimit = UINT_MAX; |
| else |
| /* We work only with arrays and pointers. */ |
| goto error; |
| |
| if (! c_textual_element_type (element_type, 0)) |
| goto error; |
| classify_type (element_type, get_type_arch (element_type), charset); |
| width = TYPE_LENGTH (element_type); |
| |
| /* If the string lives in GDB's memory instead of the inferior's, |
| then we just need to copy it to BUFFER. Also, since such strings |
| are arrays with known size, FETCHLIMIT will hold the size of the |
| array. */ |
| if ((VALUE_LVAL (value) == not_lval |
| || VALUE_LVAL (value) == lval_internalvar) |
| && fetchlimit != UINT_MAX) |
| { |
| int i; |
| const gdb_byte *contents = value_contents (value); |
| |
| /* If a length is specified, use that. */ |
| if (*length >= 0) |
| i = *length; |
| else |
| /* Otherwise, look for a null character. */ |
| for (i = 0; i < fetchlimit; i++) |
| if (extract_unsigned_integer (contents + i * width, |
| width, byte_order) == 0) |
| break; |
| |
| /* I is now either a user-defined length, the number of non-null |
| characters, or FETCHLIMIT. */ |
| *length = i * width; |
| buffer->reset ((gdb_byte *) xmalloc (*length)); |
| memcpy (buffer->get (), contents, *length); |
| err = 0; |
| } |
| else |
| { |
| CORE_ADDR addr = value_as_address (value); |
| |
| /* Prior to the fix for PR 16196 read_string would ignore fetchlimit |
| if length > 0. The old "broken" behaviour is the behaviour we want: |
| The caller may want to fetch 100 bytes from a variable length array |
| implemented using the common idiom of having an array of length 1 at |
| the end of a struct. In this case we want to ignore the declared |
| size of the array. However, it's counterintuitive to implement that |
| behaviour in read_string: what does fetchlimit otherwise mean if |
| length > 0. Therefore we implement the behaviour we want here: |
| If *length > 0, don't specify a fetchlimit. This preserves the |
| previous behaviour. We could move this check above where we know |
| whether the array is declared with a fixed size, but we only want |
| to apply this behaviour when calling read_string. PR 16286. */ |
| if (*length > 0) |
| fetchlimit = UINT_MAX; |
| |
| err = read_string (addr, *length, width, fetchlimit, |
| byte_order, buffer, length); |
| if (err != 0) |
| memory_error (TARGET_XFER_E_IO, addr); |
| } |
| |
| /* If the LENGTH is specified at -1, we want to return the string |
| length up to the terminating null character. If an actual length |
| was specified, we want to return the length of exactly what was |
| read. */ |
| if (req_length == -1) |
| /* If the last character is null, subtract it from LENGTH. */ |
| if (*length > 0 |
| && extract_unsigned_integer (buffer->get () + *length - width, |
| width, byte_order) == 0) |
| *length -= width; |
| |
| /* The read_string function will return the number of bytes read. |
| If length returned from read_string was > 0, return the number of |
| characters read by dividing the number of bytes by width. */ |
| if (*length != 0) |
| *length = *length / width; |
| |
| *char_type = element_type; |
| |
| return; |
| |
| error: |
| { |
| std::string type_str = type_to_string (type); |
| if (!type_str.empty ()) |
| { |
| error (_("Trying to read string with inappropriate type `%s'."), |
| type_str.c_str ()); |
| } |
| else |
| error (_("Trying to read string with inappropriate type.")); |
| } |
| } |
| |
| |
| /* Evaluating C and C++ expressions. */ |
| |
| /* Convert a UCN. The digits of the UCN start at P and extend no |
| farther than LIMIT. DEST_CHARSET is the name of the character set |
| into which the UCN should be converted. The results are written to |
| OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8. |
| Returns a pointer to just after the final digit of the UCN. */ |
| |
| static char * |
| convert_ucn (char *p, char *limit, const char *dest_charset, |
| struct obstack *output, int length) |
| { |
| unsigned long result = 0; |
| gdb_byte data[4]; |
| int i; |
| |
| for (i = 0; i < length && p < limit && ISXDIGIT (*p); ++i, ++p) |
| result = (result << 4) + host_hex_value (*p); |
| |
| for (i = 3; i >= 0; --i) |
| { |
| data[i] = result & 0xff; |
| result >>= 8; |
| } |
| |
| convert_between_encodings ("UTF-32BE", dest_charset, data, |
| 4, 4, output, translit_none); |
| |
| return p; |
| } |
| |
| /* Emit a character, VALUE, which was specified numerically, to |
| OUTPUT. TYPE is the target character type. */ |
| |
| static void |
| emit_numeric_character (struct type *type, unsigned long value, |
| struct obstack *output) |
| { |
| gdb_byte *buffer; |
| |
| buffer = (gdb_byte *) alloca (TYPE_LENGTH (type)); |
| pack_long (buffer, type, value); |
| obstack_grow (output, buffer, TYPE_LENGTH (type)); |
| } |
| |
| /* Convert an octal escape sequence. TYPE is the target character |
| type. The digits of the escape sequence begin at P and extend no |
| farther than LIMIT. The result is written to OUTPUT. Returns a |
| pointer to just after the final digit of the escape sequence. */ |
| |
| static char * |
| convert_octal (struct type *type, char *p, |
| char *limit, struct obstack *output) |
| { |
| int i; |
| unsigned long value = 0; |
| |
| for (i = 0; |
| i < 3 && p < limit && ISDIGIT (*p) && *p != '8' && *p != '9'; |
| ++i) |
| { |
| value = 8 * value + host_hex_value (*p); |
| ++p; |
| } |
| |
| emit_numeric_character (type, value, output); |
| |
| return p; |
| } |
| |
| /* Convert a hex escape sequence. TYPE is the target character type. |
| The digits of the escape sequence begin at P and extend no farther |
| than LIMIT. The result is written to OUTPUT. Returns a pointer to |
| just after the final digit of the escape sequence. */ |
| |
| static char * |
| convert_hex (struct type *type, char *p, |
| char *limit, struct obstack *output) |
| { |
| unsigned long value = 0; |
| |
| while (p < limit && ISXDIGIT (*p)) |
| { |
| value = 16 * value + host_hex_value (*p); |
| ++p; |
| } |
| |
| emit_numeric_character (type, value, output); |
| |
| return p; |
| } |
| |
| #define ADVANCE \ |
| do { \ |
| ++p; \ |
| if (p == limit) \ |
| error (_("Malformed escape sequence")); \ |
| } while (0) |
| |
| /* Convert an escape sequence to a target format. TYPE is the target |
| character type to use, and DEST_CHARSET is the name of the target |
| character set. The backslash of the escape sequence is at *P, and |
| the escape sequence will not extend past LIMIT. The results are |
| written to OUTPUT. Returns a pointer to just past the final |
| character of the escape sequence. */ |
| |
| static char * |
| convert_escape (struct type *type, const char *dest_charset, |
| char *p, char *limit, struct obstack *output) |
| { |
| /* Skip the backslash. */ |
| ADVANCE; |
| |
| switch (*p) |
| { |
| case '\\': |
| obstack_1grow (output, '\\'); |
| ++p; |
| break; |
| |
| case 'x': |
| ADVANCE; |
| if (!ISXDIGIT (*p)) |
| error (_("\\x used with no following hex digits.")); |
| p = convert_hex (type, p, limit, output); |
| break; |
| |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| p = convert_octal (type, p, limit, output); |
| break; |
| |
| case 'u': |
| case 'U': |
| { |
| int length = *p == 'u' ? 4 : 8; |
| |
| ADVANCE; |
| if (!ISXDIGIT (*p)) |
| error (_("\\u used with no following hex digits")); |
| p = convert_ucn (p, limit, dest_charset, output, length); |
| } |
| } |
| |
| return p; |
| } |
| |
| /* Given a single string from a (C-specific) OP_STRING list, convert |
| it to a target string, handling escape sequences specially. The |
| output is written to OUTPUT. DATA is the input string, which has |
| length LEN. DEST_CHARSET is the name of the target character set, |
| and TYPE is the type of target character to use. */ |
| |
| static void |
| parse_one_string (struct obstack *output, char *data, int len, |
| const char *dest_charset, struct type *type) |
| { |
| char *limit; |
| |
| limit = data + len; |
| |
| while (data < limit) |
| { |
| char *p = data; |
| |
| /* Look for next escape, or the end of the input. */ |
| while (p < limit && *p != '\\') |
| ++p; |
| /* If we saw a run of characters, convert them all. */ |
| if (p > data) |
| convert_between_encodings (host_charset (), dest_charset, |
| (gdb_byte *) data, p - data, 1, |
| output, translit_none); |
| /* If we saw an escape, convert it. */ |
| if (p < limit) |
| p = convert_escape (type, dest_charset, p, limit, output); |
| data = p; |
| } |
| } |
| |
| /* Expression evaluator for the C language family. Most operations |
| are delegated to evaluate_subexp_standard; see that function for a |
| description of the arguments. */ |
| |
| struct value * |
| evaluate_subexp_c (struct type *expect_type, struct expression *exp, |
| int *pos, enum noside noside) |
| { |
| enum exp_opcode op = exp->elts[*pos].opcode; |
| |
| switch (op) |
| { |
| case OP_STRING: |
| { |
| int oplen, limit; |
| struct type *type; |
| struct value *result; |
| c_string_type dest_type; |
| const char *dest_charset; |
| int satisfy_expected = 0; |
| |
| auto_obstack output; |
| |
| ++*pos; |
| oplen = longest_to_int (exp->elts[*pos].longconst); |
| |
| ++*pos; |
| limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1); |
| dest_type = ((enum c_string_type_values) |
| longest_to_int (exp->elts[*pos].longconst)); |
| switch (dest_type & ~C_CHAR) |
| { |
| case C_STRING: |
| type = language_string_char_type (exp->language_defn, |
| exp->gdbarch); |
| break; |
| case C_WIDE_STRING: |
| type = lookup_typename (exp->language_defn, exp->gdbarch, |
| "wchar_t", NULL, 0); |
| break; |
| case C_STRING_16: |
| type = lookup_typename (exp->language_defn, exp->gdbarch, |
| "char16_t", NULL, 0); |
| break; |
| case C_STRING_32: |
| type = lookup_typename (exp->language_defn, exp->gdbarch, |
| "char32_t", NULL, 0); |
| break; |
| default: |
| internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| } |
| |
| /* Ensure TYPE_LENGTH is valid for TYPE. */ |
| check_typedef (type); |
| |
| /* If the caller expects an array of some integral type, |
| satisfy them. If something odder is expected, rely on the |
| caller to cast. */ |
| if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_ARRAY) |
| { |
| struct type *element_type |
| = check_typedef (TYPE_TARGET_TYPE (expect_type)); |
| |
| if (TYPE_CODE (element_type) == TYPE_CODE_INT |
| || TYPE_CODE (element_type) == TYPE_CODE_CHAR) |
| { |
| type = element_type; |
| satisfy_expected = 1; |
| } |
| } |
| |
| dest_charset = charset_for_string_type (dest_type, exp->gdbarch); |
| |
| ++*pos; |
| while (*pos < limit) |
| { |
| int len; |
| |
| len = longest_to_int (exp->elts[*pos].longconst); |
| |
| ++*pos; |
| if (noside != EVAL_SKIP) |
| parse_one_string (&output, &exp->elts[*pos].string, len, |
| dest_charset, type); |
| *pos += BYTES_TO_EXP_ELEM (len); |
| } |
| |
| /* Skip the trailing length and opcode. */ |
| *pos += 2; |
| |
| if (noside == EVAL_SKIP) |
| { |
| /* Return a dummy value of the appropriate type. */ |
| if (expect_type != NULL) |
| result = allocate_value (expect_type); |
| else if ((dest_type & C_CHAR) != 0) |
| result = allocate_value (type); |
| else |
| result = value_cstring ("", 0, type); |
| return result; |
| } |
| |
| if ((dest_type & C_CHAR) != 0) |
| { |
| LONGEST value; |
| |
| if (obstack_object_size (&output) != TYPE_LENGTH (type)) |
| error (_("Could not convert character " |
| "constant to target character set")); |
| value = unpack_long (type, (gdb_byte *) obstack_base (&output)); |
| result = value_from_longest (type, value); |
| } |
| else |
| { |
| int i; |
| |
| /* Write the terminating character. */ |
| for (i = 0; i < TYPE_LENGTH (type); ++i) |
| obstack_1grow (&output, 0); |
| |
| if (satisfy_expected) |
| { |
| LONGEST low_bound, high_bound; |
| int element_size = TYPE_LENGTH (type); |
| |
| if (get_discrete_bounds (TYPE_INDEX_TYPE (expect_type), |
| &low_bound, &high_bound) < 0) |
| { |
| low_bound = 0; |
| high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1; |
| } |
| if (obstack_object_size (&output) / element_size |
| > (high_bound - low_bound + 1)) |
| error (_("Too many array elements")); |
| |
| result = allocate_value (expect_type); |
| memcpy (value_contents_raw (result), obstack_base (&output), |
| obstack_object_size (&output)); |
| } |
| else |
| result = value_cstring ((const char *) obstack_base (&output), |
| obstack_object_size (&output), |
| type); |
| } |
| return result; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| } |
| |
| /* la_watch_location_expression for C. */ |
| |
| gdb::unique_xmalloc_ptr<char> |
| c_watch_location_expression (struct type *type, CORE_ADDR addr) |
| { |
| type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); |
| std::string name = type_to_string (type); |
| return gdb::unique_xmalloc_ptr<char> |
| (xstrprintf ("* (%s *) %s", name.c_str (), core_addr_to_string (addr))); |
| } |
| |
| |
| /* Table mapping opcodes into strings for printing operators |
| and precedences of the operators. */ |
| |
| const struct op_print c_op_print_tab[] = |
| { |
| {",", BINOP_COMMA, PREC_COMMA, 0}, |
| {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| {">", BINOP_GTR, PREC_ORDER, 0}, |
| {"<", BINOP_LESS, PREC_ORDER, 0}, |
| {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| {"+", BINOP_ADD, PREC_ADD, 0}, |
| {"-", BINOP_SUB, PREC_ADD, 0}, |
| {"*", BINOP_MUL, PREC_MUL, 0}, |
| {"/", BINOP_DIV, PREC_MUL, 0}, |
| {"%", BINOP_REM, PREC_MUL, 0}, |
| {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| {"+", UNOP_PLUS, PREC_PREFIX, 0}, |
| {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| {"*", UNOP_IND, PREC_PREFIX, 0}, |
| {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| {"alignof ", UNOP_ALIGNOF, PREC_PREFIX, 0}, |
| {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| {NULL, OP_NULL, PREC_PREFIX, 0} |
| }; |
| |
| enum c_primitive_types { |
| c_primitive_type_int, |
| c_primitive_type_long, |
| c_primitive_type_short, |
| c_primitive_type_char, |
| c_primitive_type_float, |
| c_primitive_type_double, |
| c_primitive_type_void, |
| c_primitive_type_long_long, |
| c_primitive_type_signed_char, |
| c_primitive_type_unsigned_char, |
| c_primitive_type_unsigned_short, |
| c_primitive_type_unsigned_int, |
| c_primitive_type_unsigned_long, |
| c_primitive_type_unsigned_long_long, |
| c_primitive_type_long_double, |
| c_primitive_type_complex, |
| c_primitive_type_double_complex, |
| c_primitive_type_decfloat, |
| c_primitive_type_decdouble, |
| c_primitive_type_declong, |
| nr_c_primitive_types |
| }; |
| |
| void |
| c_language_arch_info (struct gdbarch *gdbarch, |
| struct language_arch_info *lai) |
| { |
| const struct builtin_type *builtin = builtin_type (gdbarch); |
| |
| lai->string_char_type = builtin->builtin_char; |
| lai->primitive_type_vector |
| = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, |
| struct type *); |
| lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; |
| lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; |
| lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; |
| lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; |
| lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; |
| lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; |
| lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; |
| lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; |
| lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; |
| lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; |
| lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; |
| lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; |
| lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; |
| lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; |
| lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; |
| lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; |
| lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; |
| lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat; |
| lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble; |
| lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong; |
| |
| lai->bool_type_default = builtin->builtin_int; |
| } |
| |
| const struct exp_descriptor exp_descriptor_c = |
| { |
| print_subexp_standard, |
| operator_length_standard, |
| operator_check_standard, |
| op_name_standard, |
| dump_subexp_body_standard, |
| evaluate_subexp_c |
| }; |
| |
| static const char *c_extensions[] = |
| { |
| ".c", NULL |
| }; |
| |
| extern const struct language_defn c_language_defn = |
| { |
| "c", /* Language name */ |
| "C", |
| language_c, |
| range_check_off, |
| case_sensitive_on, |
| array_row_major, |
| macro_expansion_c, |
| c_extensions, |
| &exp_descriptor_c, |
| c_parse, |
| null_post_parser, |
| c_printchar, /* Print a character constant */ |
| c_printstr, /* Function to print string constant */ |
| c_emit_char, /* Print a single char */ |
| c_print_type, /* Print a type using appropriate syntax */ |
| c_print_typedef, /* Print a typedef using appropriate syntax */ |
| c_val_print, /* Print a value using appropriate syntax */ |
| c_value_print, /* Print a top-level value */ |
| default_read_var_value, /* la_read_var_value */ |
| NULL, /* Language specific skip_trampoline */ |
| NULL, /* name_of_this */ |
| true, /* la_store_sym_names_in_linkage_form_p */ |
| basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| basic_lookup_transparent_type,/* lookup_transparent_type */ |
| NULL, /* Language specific symbol demangler */ |
| NULL, |
| NULL, /* Language specific |
| class_name_from_physname */ |
| c_op_print_tab, /* expression operators for printing */ |
| 1, /* c-style arrays */ |
| 0, /* String lower bound */ |
| default_word_break_characters, |
| default_collect_symbol_completion_matches, |
| c_language_arch_info, |
| default_print_array_index, |
| default_pass_by_reference, |
| c_get_string, |
| c_watch_location_expression, |
| NULL, /* la_get_symbol_name_matcher */ |
| iterate_over_symbols, |
| default_search_name_hash, |
| &c_varobj_ops, |
| c_get_compile_context, |
| c_compute_program, |
| LANG_MAGIC |
| }; |
| |
| enum cplus_primitive_types { |
| cplus_primitive_type_int, |
| cplus_primitive_type_long, |
| cplus_primitive_type_short, |
| cplus_primitive_type_char, |
| cplus_primitive_type_float, |
| cplus_primitive_type_double, |
| cplus_primitive_type_void, |
| cplus_primitive_type_long_long, |
| cplus_primitive_type_signed_char, |
| cplus_primitive_type_unsigned_char, |
| cplus_primitive_type_unsigned_short, |
| cplus_primitive_type_unsigned_int, |
| cplus_primitive_type_unsigned_long, |
| cplus_primitive_type_unsigned_long_long, |
| cplus_primitive_type_long_double, |
| cplus_primitive_type_complex, |
| cplus_primitive_type_double_complex, |
| cplus_primitive_type_bool, |
| cplus_primitive_type_decfloat, |
| cplus_primitive_type_decdouble, |
| cplus_primitive_type_declong, |
| cplus_primitive_type_char16_t, |
| cplus_primitive_type_char32_t, |
| cplus_primitive_type_wchar_t, |
| nr_cplus_primitive_types |
| }; |
| |
| static void |
| cplus_language_arch_info (struct gdbarch *gdbarch, |
| struct language_arch_info *lai) |
| { |
| const struct builtin_type *builtin = builtin_type (gdbarch); |
| |
| lai->string_char_type = builtin->builtin_char; |
| lai->primitive_type_vector |
| = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, |
| struct type *); |
| lai->primitive_type_vector [cplus_primitive_type_int] |
| = builtin->builtin_int; |
| lai->primitive_type_vector [cplus_primitive_type_long] |
| = builtin->builtin_long; |
| lai->primitive_type_vector [cplus_primitive_type_short] |
| = builtin->builtin_short; |
| lai->primitive_type_vector [cplus_primitive_type_char] |
| = builtin->builtin_char; |
| lai->primitive_type_vector [cplus_primitive_type_float] |
| = builtin->builtin_float; |
| lai->primitive_type_vector [cplus_primitive_type_double] |
| = builtin->builtin_double; |
| lai->primitive_type_vector [cplus_primitive_type_void] |
| = builtin->builtin_void; |
| lai->primitive_type_vector [cplus_primitive_type_long_long] |
| = builtin->builtin_long_long; |
| lai->primitive_type_vector [cplus_primitive_type_signed_char] |
| = builtin->builtin_signed_char; |
| lai->primitive_type_vector [cplus_primitive_type_unsigned_char] |
| = builtin->builtin_unsigned_char; |
| lai->primitive_type_vector [cplus_primitive_type_unsigned_short] |
| = builtin->builtin_unsigned_short; |
| lai->primitive_type_vector [cplus_primitive_type_unsigned_int] |
| = builtin->builtin_unsigned_int; |
| lai->primitive_type_vector [cplus_primitive_type_unsigned_long] |
| = builtin->builtin_unsigned_long; |
| lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] |
| = builtin->builtin_unsigned_long_long; |
| lai->primitive_type_vector [cplus_primitive_type_long_double] |
| = builtin->builtin_long_double; |
| lai->primitive_type_vector [cplus_primitive_type_complex] |
| = builtin->builtin_complex; |
| lai->primitive_type_vector [cplus_primitive_type_double_complex] |
| = builtin->builtin_double_complex; |
| lai->primitive_type_vector [cplus_primitive_type_bool] |
| = builtin->builtin_bool; |
| lai->primitive_type_vector [cplus_primitive_type_decfloat] |
| = builtin->builtin_decfloat; |
| lai->primitive_type_vector [cplus_primitive_type_decdouble] |
| = builtin->builtin_decdouble; |
| lai->primitive_type_vector [cplus_primitive_type_declong] |
| = builtin->builtin_declong; |
| lai->primitive_type_vector [cplus_primitive_type_char16_t] |
| = builtin->builtin_char16; |
| lai->primitive_type_vector [cplus_primitive_type_char32_t] |
| = builtin->builtin_char32; |
| lai->primitive_type_vector [cplus_primitive_type_wchar_t] |
| = builtin->builtin_wchar; |
| |
| lai->bool_type_symbol = "bool"; |
| lai->bool_type_default = builtin->builtin_bool; |
| } |
| |
| static const char *cplus_extensions[] = |
| { |
| ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL |
| }; |
| |
| extern const struct language_defn cplus_language_defn = |
| { |
| "c++", /* Language name */ |
| "C++", |
| language_cplus, |
| range_check_off, |
| case_sensitive_on, |
| array_row_major, |
| macro_expansion_c, |
| cplus_extensions, |
| &exp_descriptor_c, |
| c_parse, |
| null_post_parser, |
| c_printchar, /* Print a character constant */ |
| c_printstr, /* Function to print string constant */ |
| c_emit_char, /* Print a single char */ |
| c_print_type, /* Print a type using appropriate syntax */ |
| c_print_typedef, /* Print a typedef using appropriate syntax */ |
| c_val_print, /* Print a value using appropriate syntax */ |
| c_value_print, /* Print a top-level value */ |
| default_read_var_value, /* la_read_var_value */ |
| cplus_skip_trampoline, /* Language specific skip_trampoline */ |
| "this", /* name_of_this */ |
| false, /* la_store_sym_names_in_linkage_form_p */ |
| cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| cp_lookup_transparent_type, /* lookup_transparent_type */ |
| gdb_demangle, /* Language specific symbol demangler */ |
| gdb_sniff_from_mangled_name, |
| cp_class_name_from_physname, /* Language specific |
| class_name_from_physname */ |
| c_op_print_tab, /* expression operators for printing */ |
| 1, /* c-style arrays */ |
| 0, /* String lower bound */ |
| default_word_break_characters, |
| default_collect_symbol_completion_matches, |
| cplus_language_arch_info, |
| default_print_array_index, |
| cp_pass_by_reference, |
| c_get_string, |
| c_watch_location_expression, |
| cp_get_symbol_name_matcher, |
| iterate_over_symbols, |
| cp_search_name_hash, |
| &cplus_varobj_ops, |
| cplus_get_compile_context, |
| cplus_compute_program, |
| LANG_MAGIC |
| }; |
| |
| static const char *asm_extensions[] = |
| { |
| ".s", ".sx", ".S", NULL |
| }; |
| |
| extern const struct language_defn asm_language_defn = |
| { |
| "asm", /* Language name */ |
| "assembly", |
| language_asm, |
| range_check_off, |
| case_sensitive_on, |
| array_row_major, |
| macro_expansion_c, |
| asm_extensions, |
| &exp_descriptor_c, |
| c_parse, |
| null_post_parser, |
| c_printchar, /* Print a character constant */ |
| c_printstr, /* Function to print string constant */ |
| c_emit_char, /* Print a single char */ |
| c_print_type, /* Print a type using appropriate syntax */ |
| c_print_typedef, /* Print a typedef using appropriate syntax */ |
| c_val_print, /* Print a value using appropriate syntax */ |
| c_value_print, /* Print a top-level value */ |
| default_read_var_value, /* la_read_var_value */ |
| NULL, /* Language specific skip_trampoline */ |
| NULL, /* name_of_this */ |
| true, /* la_store_sym_names_in_linkage_form_p */ |
| basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| basic_lookup_transparent_type,/* lookup_transparent_type */ |
| NULL, /* Language specific symbol demangler */ |
| NULL, |
| NULL, /* Language specific |
| class_name_from_physname */ |
| c_op_print_tab, /* expression operators for printing */ |
| 1, /* c-style arrays */ |
| 0, /* String lower bound */ |
| default_word_break_characters, |
| default_collect_symbol_completion_matches, |
| c_language_arch_info, /* FIXME: la_language_arch_info. */ |
| default_print_array_index, |
| default_pass_by_reference, |
| c_get_string, |
| c_watch_location_expression, |
| NULL, /* la_get_symbol_name_matcher */ |
| iterate_over_symbols, |
| default_search_name_hash, |
| &default_varobj_ops, |
| NULL, |
| NULL, |
| LANG_MAGIC |
| }; |
| |
| /* The following language_defn does not represent a real language. |
| It just provides a minimal support a-la-C that should allow users |
| to do some simple operations when debugging applications that use |
| a language currently not supported by GDB. */ |
| |
| extern const struct language_defn minimal_language_defn = |
| { |
| "minimal", /* Language name */ |
| "Minimal", |
| language_minimal, |
| range_check_off, |
| case_sensitive_on, |
| array_row_major, |
| macro_expansion_c, |
| NULL, |
| &exp_descriptor_c, |
| c_parse, |
| null_post_parser, |
| c_printchar, /* Print a character constant */ |
| c_printstr, /* Function to print string constant */ |
| c_emit_char, /* Print a single char */ |
| c_print_type, /* Print a type using appropriate syntax */ |
| c_print_typedef, /* Print a typedef using appropriate syntax */ |
| c_val_print, /* Print a value using appropriate syntax */ |
| c_value_print, /* Print a top-level value */ |
| default_read_var_value, /* la_read_var_value */ |
| NULL, /* Language specific skip_trampoline */ |
| NULL, /* name_of_this */ |
| true, /* la_store_sym_names_in_linkage_form_p */ |
| basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| basic_lookup_transparent_type,/* lookup_transparent_type */ |
| NULL, /* Language specific symbol demangler */ |
| NULL, |
| NULL, /* Language specific |
| class_name_from_physname */ |
| c_op_print_tab, /* expression operators for printing */ |
| 1, /* c-style arrays */ |
| 0, /* String lower bound */ |
| default_word_break_characters, |
| default_collect_symbol_completion_matches, |
| c_language_arch_info, |
| default_print_array_index, |
| default_pass_by_reference, |
| c_get_string, |
| c_watch_location_expression, |
| NULL, /* la_get_symbol_name_matcher */ |
| iterate_over_symbols, |
| default_search_name_hash, |
| &default_varobj_ops, |
| NULL, |
| NULL, |
| LANG_MAGIC |
| }; |