/* C language support routines for GDB, the GNU debugger.
- Copyright 1992, 1993 Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright (C) 1992-2014 Free Software Foundation, Inc.
-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 2 of the License, or
-(at your option) any later version.
+ This file is part of GDB.
-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.
+ 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.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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 "expression.h"
#include "parser-defs.h"
#include "language.h"
+#include "varobj.h"
#include "c-lang.h"
+#include "valprint.h"
+#include "macroscope.h"
+#include "gdb_assert.h"
+#include "charset.h"
+#include <string.h>
+#include "demangle.h"
+#include "cp-abi.h"
+#include "cp-support.h"
+#include "gdb_obstack.h"
+#include <ctype.h>
+#include "exceptions.h"
+#include "gdbcore.h"
-/* 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. */
+extern void _initialize_c_language (void);
-static void
-emit_char (c, stream, quoter)
- register int c;
- GDB_FILE *stream;
- int quoter;
+/* Given a C string type, STR_TYPE, return the corresponding target
+ character set name. */
+
+static const char *
+charset_for_string_type (enum 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. */
- c &= 0xFF; /* Avoid sign bit follies */
+static enum c_string_type
+classify_type (struct type *elttype, struct gdbarch *gdbarch,
+ const char **encoding)
+{
+ enum c_string_type result;
- if (PRINT_LITERAL_FORM (c))
+ /* 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)
{
- if (c == '\\' || c == quoter)
+ const char *name = TYPE_NAME (elttype);
+
+ if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name)
{
- fputs_filtered ("\\", stream);
+ result = C_CHAR;
+ goto done;
}
- fprintf_filtered (stream, "%c", c);
- }
- else
- {
- switch (c)
+
+ 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
{
- case '\n':
- fputs_filtered ("\\n", stream);
- break;
- case '\b':
- fputs_filtered ("\\b", stream);
- break;
- case '\t':
- fputs_filtered ("\\t", stream);
- break;
- case '\f':
- fputs_filtered ("\\f", stream);
- break;
- case '\r':
- fputs_filtered ("\\r", stream);
- break;
- case '\033':
- fputs_filtered ("\\e", stream);
- break;
- case '\007':
- fputs_filtered ("\\a", stream);
- break;
- default:
- fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
- break;
+ /* 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++. */
+ CHECK_TYPEDEF (elttype);
}
}
+
+ /* Punt. */
+ result = C_CHAR;
+
+ done:
+ if (encoding)
+ *encoding = charset_for_string_type (result, gdbarch);
+
+ return result;
}
-static void
-c_printchar (c, stream)
- int c;
- GDB_FILE *stream;
+/* 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)
{
- fputs_filtered ("'", stream);
- emit_char (c, stream, '\'');
- fputs_filtered ("'", stream);
-}
+ const char *encoding;
-/* Print the character string STRING, printing at most LENGTH characters.
- 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. */
+ classify_type (type, get_type_arch (type), &encoding);
+ generic_emit_char (c, type, stream, quoter, encoding);
+}
-static void
-c_printstr (stream, string, length, force_ellipses)
- GDB_FILE *stream;
- char *string;
- unsigned int length;
- int force_ellipses;
+void
+c_printchar (int c, struct type *type, struct ui_file *stream)
{
- register unsigned int i;
- unsigned int things_printed = 0;
- int in_quotes = 0;
- int need_comma = 0;
- extern int inspect_it;
- extern int repeat_count_threshold;
- extern int print_max;
-
- /* If the string was not truncated due to `set print elements', and
- the last byte of it is a null, we don't print that, in traditional C
- style. */
- if ((!force_ellipses) && length > 0 && string[length-1] == '\0')
- length--;
-
- if (length == 0)
+ enum c_string_type str_type;
+
+ str_type = classify_type (type, get_type_arch (type), NULL);
+ switch (str_type)
{
- fputs_filtered ("\"\"", stream);
- return;
+ 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;
}
- for (i = 0; i < length && things_printed < print_max; ++i)
+ 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)
+{
+ enum 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)
{
- /* Position of the character we are examining
- to see whether it is repeated. */
- unsigned int rep1;
- /* Number of repetitions we have detected so far. */
- unsigned int reps;
+ 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;
+ }
- QUIT;
+ encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding;
- if (need_comma)
- {
- fputs_filtered (", ", stream);
- need_comma = 0;
- }
+ generic_printstr (stream, type, string, length, encoding, force_ellipses,
+ '"', 1, options);
+}
- rep1 = i + 1;
- reps = 1;
- while (rep1 < length && string[rep1] == string[i])
- {
- ++rep1;
- ++reps;
- }
+/* 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_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 (reps > repeat_count_threshold)
+ 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)
{
- if (in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\\", ", stream);
- else
- fputs_filtered ("\", ", stream);
- in_quotes = 0;
- }
- c_printchar (string[i], stream);
- fprintf_filtered (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += repeat_count_threshold;
- need_comma = 1;
+ 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 = xmalloc (*length);
+ memcpy (*buffer, 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)
{
- if (!in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\\"", stream);
- else
- fputs_filtered ("\"", stream);
- in_quotes = 1;
- }
- emit_char (string[i], stream, '"');
- ++things_printed;
+ xfree (*buffer);
+ memory_error (err, addr);
}
}
- /* Terminate the quotes if necessary. */
- if (in_quotes)
+ /* 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 + *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:
+ {
+ char *type_str;
+
+ type_str = type_to_string (type);
+ if (type_str)
+ {
+ make_cleanup (xfree, type_str);
+ error (_("Trying to read string with inappropriate type `%s'."),
+ type_str);
+ }
+ else
+ error (_("Trying to read string with inappropriate type."));
+ }
+}
+
+\f
+/* 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)
{
- if (inspect_it)
- fputs_filtered ("\\\"", stream);
- else
- fputs_filtered ("\"", stream);
+ data[i] = result & 0xff;
+ result >>= 8;
}
- if (force_ellipses || i < length)
- fputs_filtered ("...", stream);
+ 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 = alloca (TYPE_LENGTH (type));
+ pack_long (buffer, type, value);
+ obstack_grow (output, buffer, TYPE_LENGTH (type));
}
-/* Create a fundamental C type using default reasonable for the current
- target machine.
-
- Some object/debugging file formats (DWARF version 1, COFF, etc) do not
- define fundamental types such as "int" or "double". Others (stabs or
- DWARF version 2, etc) do define fundamental types. For the formats which
- don't provide fundamental types, gdb can create such types using this
- function.
-
- FIXME: Some compilers distinguish explicitly signed integral types
- (signed short, signed int, signed long) from "regular" integral types
- (short, int, long) in the debugging information. There is some dis-
- agreement as to how useful this feature is. In particular, gcc does
- not support this. Also, only some debugging formats allow the
- distinction to be passed on to a debugger. For now, we always just
- use "short", "int", or "long" as the type name, for both the implicit
- and explicitly signed types. This also makes life easier for the
- gdb test suite since we don't have to account for the differences
- in output depending upon what the compiler and debugging format
- support. We will probably have to re-examine the issue when gdb
- starts taking it's fundamental type information directly from the
-
-static struct type *
-c_create_fundamental_type (objfile, typeid)
- struct objfile *objfile;
- int typeid;
+/* 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)
{
- register struct type *type = NULL;
+ int i;
+ unsigned long value = 0;
- switch (typeid)
+ for (i = 0;
+ i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9';
+ ++i)
{
- default:
- /* FIXME: For now, if we are asked to produce a type not in this
- language, create the equivalent of a C integer type with the
- name "<?type?>". When all the dust settles from the type
- reconstruction work, this should probably become an error. */
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "<?type?>", objfile);
- warning ("internal error: no C/C++ fundamental type %d", typeid);
- break;
- case FT_VOID:
- type = init_type (TYPE_CODE_VOID,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "void", objfile);
- break;
- case FT_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "char", objfile);
- break;
- case FT_SIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "signed char", objfile);
- break;
- case FT_UNSIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
- break;
- case FT_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "short", objfile);
- break;
- case FT_SIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "short", objfile); /* FIXME-fnf */
- break;
- case FT_UNSIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
- break;
- case FT_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "int", objfile);
- break;
- case FT_SIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "int", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
- break;
- case FT_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long", objfile);
- break;
- case FT_SIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
- break;
- case FT_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long long", objfile);
- break;
- case FT_SIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "signed long long", objfile);
- break;
- case FT_UNSIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
- 0, "float", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "double", objfile);
- break;
- case FT_EXT_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "long double", objfile);
- break;
+ 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 (type);
+ }
+
+ 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 obstack output;
+ struct cleanup *cleanup;
+ struct value *result;
+ enum c_string_type dest_type;
+ const char *dest_charset;
+ int satisfy_expected = 0;
+
+ obstack_init (&output);
+ cleanup = make_cleanup_obstack_free (&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) 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);
+ do_cleanups (cleanup);
+ 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 (obstack_base (&output),
+ obstack_object_size (&output),
+ type);
+ }
+ do_cleanups (cleanup);
+ return result;
+ }
+ break;
+
+ default:
+ break;
+ }
+ return evaluate_subexp_standard (expect_type, exp, pos, noside);
+}
+
+
\f
/* Table mapping opcodes into strings for printing operators
and precedences of the operators. */
-static 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_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},
- {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
- {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
- /* C++ */
- {"::", BINOP_SCOPE, PREC_PREFIX, 0},
- {NULL, 0, 0, 0}
+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},
+ {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
+ {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
+ {NULL, 0, 0, 0}
};
\f
-struct type ** const (c_builtin_types[]) =
+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)
{
- &builtin_type_int,
- &builtin_type_long,
- &builtin_type_short,
- &builtin_type_char,
- &builtin_type_float,
- &builtin_type_double,
- &builtin_type_void,
- &builtin_type_long_long,
- &builtin_type_signed_char,
- &builtin_type_unsigned_char,
- &builtin_type_unsigned_short,
- &builtin_type_unsigned_int,
- &builtin_type_unsigned_long,
- &builtin_type_unsigned_long_long,
- &builtin_type_long_double,
- &builtin_type_complex,
- &builtin_type_double_complex,
- 0
+ 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
};
-const struct language_defn c_language_defn = {
+const struct language_defn c_language_defn =
+{
"c", /* Language name */
+ "C",
language_c,
- c_builtin_types,
range_check_off,
- type_check_off,
+ case_sensitive_on,
+ array_row_major,
+ macro_expansion_c,
+ &exp_descriptor_c,
c_parse,
c_error,
+ null_post_parser,
c_printchar, /* Print a character constant */
c_printstr, /* Function to print string constant */
- c_create_fundamental_type, /* Create fundamental type in this language */
+ 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 */
- &BUILTIN_TYPE_LONGEST, /* longest signed integral type */
- &BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
- &builtin_type_double, /* longest floating point type */ /*FIXME*/
- {"", "", "", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"0x%lx", "0x", "x", ""}, /* Hex format info */
+ 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 */
+ basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
+ basic_lookup_transparent_type,/* lookup_transparent_type */
+ NULL, /* Language specific symbol demangler */
+ 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_make_symbol_completion_list,
+ c_language_arch_info,
+ default_print_array_index,
+ default_pass_by_reference,
+ c_get_string,
+ NULL, /* la_get_symbol_name_cmp */
+ iterate_over_symbols,
+ &c_varobj_ops,
LANG_MAGIC
};
-const struct language_defn cplus_language_defn = {
- "c++", /* Language name */
+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,
+ 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->bool_type_symbol = "bool";
+ lai->bool_type_default = builtin->builtin_bool;
+}
+
+const struct language_defn cplus_language_defn =
+{
+ "c++", /* Language name */
+ "C++",
language_cplus,
- c_builtin_types,
range_check_off,
- type_check_off,
+ case_sensitive_on,
+ array_row_major,
+ macro_expansion_c,
+ &exp_descriptor_c,
+ c_parse,
+ c_error,
+ 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 */
+ cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
+ cp_lookup_transparent_type, /* lookup_transparent_type */
+ gdb_demangle, /* Language specific symbol demangler */
+ 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_make_symbol_completion_list,
+ cplus_language_arch_info,
+ default_print_array_index,
+ cp_pass_by_reference,
+ c_get_string,
+ NULL, /* la_get_symbol_name_cmp */
+ iterate_over_symbols,
+ &cplus_varobj_ops,
+ LANG_MAGIC
+};
+
+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,
+ &exp_descriptor_c,
+ c_parse,
+ c_error,
+ 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 */
+ basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
+ basic_lookup_transparent_type,/* lookup_transparent_type */
+ NULL, /* Language specific symbol demangler */
+ 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_make_symbol_completion_list,
+ c_language_arch_info, /* FIXME: la_language_arch_info. */
+ default_print_array_index,
+ default_pass_by_reference,
+ c_get_string,
+ NULL, /* la_get_symbol_name_cmp */
+ iterate_over_symbols,
+ &default_varobj_ops,
+ 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. */
+
+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,
+ &exp_descriptor_c,
c_parse,
c_error,
+ null_post_parser,
c_printchar, /* Print a character constant */
c_printstr, /* Function to print string constant */
- c_create_fundamental_type, /* Create fundamental type in this language */
+ 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 */
- &BUILTIN_TYPE_LONGEST, /* longest signed integral type */
- &BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
- &builtin_type_double, /* longest floating point type */ /*FIXME*/
- {"", "", "", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"0x%lx", "0x", "x", ""}, /* Hex format info */
+ 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 */
+ basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
+ basic_lookup_transparent_type,/* lookup_transparent_type */
+ NULL, /* Language specific symbol demangler */
+ 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_make_symbol_completion_list,
+ c_language_arch_info,
+ default_print_array_index,
+ default_pass_by_reference,
+ c_get_string,
+ NULL, /* la_get_symbol_name_cmp */
+ iterate_over_symbols,
+ &default_varobj_ops,
LANG_MAGIC
};
void
-_initialize_c_language ()
+_initialize_c_language (void)
{
add_language (&c_language_defn);
add_language (&cplus_language_defn);
+ add_language (&asm_language_defn);
+ add_language (&minimal_language_defn);
}
projects / binutils.git / blobdiff