X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fc-valprint.c;h=7d5feb3e6bc8d9eac070038c4a903a79f4bf6ecd;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=dc391ee224492dee491c4ed105bc578ccc97283e;hpb=e17a4113357102b55cfa5b80557d590a46a43300;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c index dc391ee224..7d5feb3e6b 100644 --- a/gdb/c-valprint.c +++ b/gdb/c-valprint.c @@ -1,8 +1,6 @@ /* Support for printing C values for GDB, the GNU debugger. - Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 1998, 1999, 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009 - Free Software Foundation, Inc. + Copyright (C) 1986-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -20,7 +18,6 @@ along with this program. If not, see . */ #include "defs.h" -#include "gdb_string.h" #include "symtab.h" #include "gdbtypes.h" #include "expression.h" @@ -30,31 +27,10 @@ #include "c-lang.h" #include "cp-abi.h" #include "target.h" +#include "objfiles.h" -/* Print function pointer with inferior address ADDRESS onto stdio - stream STREAM. */ - -static void -print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address, - struct ui_file *stream, int addressprint) -{ - CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, address, - ¤t_target); - - /* If the function pointer is represented by a description, print the - address of the description. */ - if (addressprint && func_addr != address) - { - fputs_filtered ("@", stream); - fputs_filtered (paddress (gdbarch, address), stream); - fputs_filtered (": ", stream); - } - print_address_demangle (gdbarch, func_addr, stream, demangle); -} - - -/* A helper for textual_element_type. This checks the name of the +/* A helper for c_textual_element_type. This checks the name of the typedef. This is bogus but it isn't apparent that the compiler provides us the help we may need. */ @@ -69,16 +45,16 @@ textual_name (const char *name) /* Apply a heuristic to decide whether an array of TYPE or a pointer to TYPE should be printed as a textual string. Return non-zero if it should, or zero if it should be treated as an array of integers - or pointer to integers. FORMAT is the current format letter, - or 0 if none. + or pointer to integers. FORMAT is the current format letter, or 0 + if none. We guess that "char" is a character. Explicitly signed and unsigned character types are also characters. Integer data from vector types is not. The user can override this by using the /s format letter. */ -static int -textual_element_type (struct type *type, char format) +int +c_textual_element_type (struct type *type, char format) { struct type *true_type, *iter_type; @@ -90,11 +66,11 @@ textual_element_type (struct type *type, char format) true_type = check_typedef (type); /* TYPE_CODE_CHAR is always textual. */ - if (TYPE_CODE (true_type) == TYPE_CODE_CHAR) + if (true_type->code () == TYPE_CODE_CHAR) return 1; /* Any other character-like types must be integral. */ - if (TYPE_CODE (true_type) != TYPE_CODE_INT) + if (true_type->code () != TYPE_CODE_INT) return 0; /* We peel typedefs one by one, looking for a match. */ @@ -102,10 +78,10 @@ textual_element_type (struct type *type, char format) while (iter_type) { /* Check the name of the type. */ - if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type))) + if (iter_type->name () && textual_name (iter_type->name ())) return 1; - if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF) + if (iter_type->code () != TYPE_CODE_TYPEDEF) break; /* Peel a single typedef. If the typedef doesn't have a target @@ -119,9 +95,9 @@ textual_element_type (struct type *type, char format) if (format == 's') { - /* Print this as a string if we can manage it. For now, no - wide character support. */ - if (TYPE_CODE (true_type) == TYPE_CODE_INT + /* Print this as a string if we can manage it. For now, no wide + character support. */ + if (true_type->code () == TYPE_CODE_INT && TYPE_LENGTH (true_type) == 1) return 1; } @@ -130,7 +106,7 @@ textual_element_type (struct type *type, char format) /* If a one-byte TYPE_CODE_INT is missing the not-a-character flag, then we treat it as text; otherwise, we assume it's being used as data. */ - if (TYPE_CODE (true_type) == TYPE_CODE_INT + if (true_type->code () == TYPE_CODE_INT && TYPE_LENGTH (true_type) == 1 && !TYPE_NOTTEXT (true_type)) return 1; @@ -139,458 +115,390 @@ textual_element_type (struct type *type, char format) return 0; } +/* Decorations for C. */ -/* Print data of type TYPE located at VALADDR (within GDB), which came from - the inferior at address ADDRESS, onto stdio stream STREAM according to - OPTIONS. The data at VALADDR is in target byte order. - - If the data are a string pointer, returns the number of string characters - printed. */ +static const struct generic_val_print_decorations c_decorations = +{ + "", + " + ", + "i", + "true", + "false", + "void", + "{", + "}" +}; + +/* Print a pointer based on the type of its target. + + Arguments to this functions are roughly the same as those in c_val_print. + A difference is that ADDRESS is the address to print, with embedded_offset + already added. UNRESOLVED_ELTTYPE and ELTTYPE represent the pointed type, + respectively before and after check_typedef. */ -int -c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, - CORE_ADDR address, struct ui_file *stream, int recurse, - const struct value_print_options *options) +static void +print_unpacked_pointer (struct type *type, struct type *elttype, + struct type *unresolved_elttype, + const gdb_byte *valaddr, int embedded_offset, + CORE_ADDR address, struct ui_file *stream, int recurse, + const struct value_print_options *options) { + int want_space = 0; struct gdbarch *gdbarch = get_type_arch (type); - enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); - unsigned int i = 0; /* Number of characters printed */ - unsigned len; - struct type *elttype, *unresolved_elttype; - struct type *unresolved_type = type; - unsigned eltlen; - LONGEST val; - CORE_ADDR addr; - - CHECK_TYPEDEF (type); - switch (TYPE_CODE (type)) + + if (elttype->code () == TYPE_CODE_FUNC) { - case TYPE_CODE_ARRAY: - unresolved_elttype = TYPE_TARGET_TYPE (type); - elttype = check_typedef (unresolved_elttype); - if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0) - { - eltlen = TYPE_LENGTH (elttype); - len = TYPE_LENGTH (type) / eltlen; - if (options->prettyprint_arrays) - { - print_spaces_filtered (2 + 2 * recurse, stream); - } + /* Try to print what function it points to. */ + print_function_pointer_address (options, gdbarch, address, stream); + return; + } - /* Print arrays of textual chars with a string syntax. */ - if (textual_element_type (unresolved_elttype, options->format)) - { - /* If requested, look for the first null char and only print - elements up to it. */ - if (options->stop_print_at_null) - { - unsigned int temp_len; - - for (temp_len = 0; - (temp_len < len - && temp_len < options->print_max - && extract_unsigned_integer (valaddr + embedded_offset - + temp_len * eltlen, - eltlen, byte_order) == 0); - ++temp_len) - ; - len = temp_len; - } + if (options->symbol_print) + want_space = print_address_demangle (options, gdbarch, address, stream, + demangle); + else if (options->addressprint) + { + fputs_filtered (paddress (gdbarch, address), stream); + want_space = 1; + } - LA_PRINT_STRING (stream, unresolved_elttype, - valaddr + embedded_offset, len, 0, options); - i = len; - } - else - { - fprintf_filtered (stream, "{"); - /* If this is a virtual function table, print the 0th - entry specially, and the rest of the members normally. */ - if (cp_is_vtbl_ptr_type (elttype)) - { - i = 1; - fprintf_filtered (stream, _("%d vtable entries"), len - 1); - } - else - { - i = 0; - } - val_print_array_elements (type, valaddr + embedded_offset, address, stream, - recurse, options, i); - fprintf_filtered (stream, "}"); - } - break; - } - /* Array of unspecified length: treat like pointer to first elt. */ - addr = address; - goto print_unpacked_pointer; + /* For a pointer to a textual type, also print the string + pointed to, unless pointer is null. */ - case TYPE_CODE_MEMBERPTR: - if (options->format) + if (c_textual_element_type (unresolved_elttype, options->format) + && address != 0) + { + if (want_space) + fputs_filtered (" ", stream); + val_print_string (unresolved_elttype, NULL, address, -1, stream, options); + } + else if (cp_is_vtbl_member (type)) + { + /* Print vtbl's nicely. */ + CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); + struct bound_minimal_symbol msymbol = + lookup_minimal_symbol_by_pc (vt_address); + + /* If 'symbol_print' is set, we did the work above. */ + if (!options->symbol_print + && (msymbol.minsym != NULL) + && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) { - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - break; + if (want_space) + fputs_filtered (" ", stream); + fputs_filtered (" <", stream); + fputs_filtered (msymbol.minsym->print_name (), stream); + fputs_filtered (">", stream); + want_space = 1; } - cp_print_class_member (valaddr + embedded_offset, type, stream, "&"); - break; - - case TYPE_CODE_METHODPTR: - cplus_print_method_ptr (valaddr + embedded_offset, type, stream); - break; - case TYPE_CODE_PTR: - if (options->format && options->format != 's') - { - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - break; - } - if (options->vtblprint && cp_is_vtbl_ptr_type (type)) + if (vt_address && options->vtblprint) { - /* Print the unmangled name if desired. */ - /* Print vtable entry - we only get here if we ARE using - -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ - CORE_ADDR addr - = extract_typed_address (valaddr + embedded_offset, type); - print_function_pointer_address (gdbarch, addr, stream, - options->addressprint); - break; - } - unresolved_elttype = TYPE_TARGET_TYPE (type); - elttype = check_typedef (unresolved_elttype); - { - addr = unpack_pointer (type, valaddr + embedded_offset); - print_unpacked_pointer: + struct value *vt_val; + struct symbol *wsym = NULL; + struct type *wtype; - if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) + if (want_space) + fputs_filtered (" ", stream); + + if (msymbol.minsym != NULL) { - /* Try to print what function it points to. */ - print_function_pointer_address (gdbarch, addr, stream, - options->addressprint); - /* Return value is irrelevant except for string pointers. */ - return (0); + const char *search_name = msymbol.minsym->search_name (); + wsym = lookup_symbol_search_name (search_name, NULL, + VAR_DOMAIN).symbol; } - if (options->addressprint) - fputs_filtered (paddress (gdbarch, addr), stream); - - /* For a pointer to a textual type, also print the string - pointed to, unless pointer is null. */ - - if (textual_element_type (unresolved_elttype, options->format) - && addr != 0) + if (wsym) { - i = val_print_string (unresolved_elttype, addr, -1, stream, - options); + wtype = SYMBOL_TYPE (wsym); } - else if (cp_is_vtbl_member (type)) + else { - /* print vtbl's nicely */ - CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); - - struct minimal_symbol *msymbol = - lookup_minimal_symbol_by_pc (vt_address); - if ((msymbol != NULL) && - (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) - { - fputs_filtered (" <", stream); - fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); - fputs_filtered (">", stream); - } - if (vt_address && options->vtblprint) - { - struct value *vt_val; - struct symbol *wsym = (struct symbol *) NULL; - struct type *wtype; - struct block *block = (struct block *) NULL; - int is_this_fld; - - if (msymbol != NULL) - wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block, - VAR_DOMAIN, &is_this_fld); - - if (wsym) - { - wtype = SYMBOL_TYPE (wsym); - } - else - { - wtype = unresolved_elttype; - } - vt_val = value_at (wtype, vt_address); - common_val_print (vt_val, stream, recurse + 1, options, - current_language); - if (options->pretty) - { - fprintf_filtered (stream, "\n"); - print_spaces_filtered (2 + 2 * recurse, stream); - } - } + wtype = unresolved_elttype; } - - /* Return number of characters printed, including the terminating - '\0' if we reached the end. val_print_string takes care including - the terminating '\0' if necessary. */ - return i; - } - break; - - case TYPE_CODE_REF: - elttype = check_typedef (TYPE_TARGET_TYPE (type)); - if (options->addressprint) - { - CORE_ADDR addr - = extract_typed_address (valaddr + embedded_offset, type); - fprintf_filtered (stream, "@"); - fputs_filtered (paddress (gdbarch, addr), stream); - if (options->deref_ref) - fputs_filtered (": ", stream); - } - /* De-reference the reference. */ - if (options->deref_ref) - { - if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) + vt_val = value_at (wtype, vt_address); + common_val_print (vt_val, stream, recurse + 1, options, + current_language); + if (options->prettyformat) { - struct value *deref_val = - value_at - (TYPE_TARGET_TYPE (type), - unpack_pointer (type, valaddr + embedded_offset)); - common_val_print (deref_val, stream, recurse, options, - current_language); + fprintf_filtered (stream, "\n"); + print_spaces_filtered (2 + 2 * recurse, stream); } - else - fputs_filtered ("???", stream); } - break; + } +} - case TYPE_CODE_UNION: - if (recurse && !options->unionprint) - { - fprintf_filtered (stream, "{...}"); - break; - } - /* Fall through. */ - case TYPE_CODE_STRUCT: - /*FIXME: Abstract this away */ - if (options->vtblprint && cp_is_vtbl_ptr_type (type)) - { - /* Print the unmangled name if desired. */ - /* Print vtable entry - we only get here if NOT using - -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ - int offset = (embedded_offset + - TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8); - struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET); - CORE_ADDR addr - = extract_typed_address (valaddr + offset, field_type); - - print_function_pointer_address (gdbarch, addr, stream, - options->addressprint); - } - else - cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream, - recurse, options, NULL, 0); - break; +/* c_value_print helper for TYPE_CODE_ARRAY. */ - case TYPE_CODE_ENUM: - if (options->format) - { - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - break; - } - len = TYPE_NFIELDS (type); - val = unpack_long (type, valaddr + embedded_offset); - for (i = 0; i < len; i++) +static void +c_value_print_array (struct value *val, + struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = check_typedef (value_type (val)); + CORE_ADDR address = value_address (val); + const gdb_byte *valaddr = value_contents_for_printing (val); + struct type *unresolved_elttype = TYPE_TARGET_TYPE (type); + struct type *elttype = check_typedef (unresolved_elttype); + + if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0) + { + LONGEST low_bound, high_bound; + int eltlen, len; + enum bfd_endian byte_order = type_byte_order (type); + + if (!get_array_bounds (type, &low_bound, &high_bound)) + error (_("Could not determine the array high bound")); + + eltlen = TYPE_LENGTH (elttype); + len = high_bound - low_bound + 1; + + /* Print arrays of textual chars with a string syntax, as + long as the entire array is valid. */ + if (c_textual_element_type (unresolved_elttype, + options->format) + && value_bytes_available (val, 0, TYPE_LENGTH (type)) + && !value_bits_any_optimized_out (val, 0, + TARGET_CHAR_BIT * TYPE_LENGTH (type))) { - QUIT; - if (val == TYPE_FIELD_BITPOS (type, i)) + int force_ellipses = 0; + + /* If requested, look for the first null char and only + print elements up to it. */ + if (options->stop_print_at_null) { - break; + unsigned int temp_len; + + for (temp_len = 0; + (temp_len < len + && temp_len < options->print_max + && extract_unsigned_integer (valaddr + temp_len * eltlen, + eltlen, byte_order) != 0); + ++temp_len) + ; + + /* Force LA_PRINT_STRING to print ellipses if + we've printed the maximum characters and + the next character is not \000. */ + if (temp_len == options->print_max && temp_len < len) + { + ULONGEST ival + = extract_unsigned_integer (valaddr + temp_len * eltlen, + eltlen, byte_order); + if (ival != 0) + force_ellipses = 1; + } + + len = temp_len; } - } - if (i < len) - { - fputs_filtered (TYPE_FIELD_NAME (type, i), stream); + + LA_PRINT_STRING (stream, unresolved_elttype, valaddr, len, + NULL, force_ellipses, options); } else { - print_longest (stream, 'd', 0, val); + unsigned int i = 0; + fprintf_filtered (stream, "{"); + /* If this is a virtual function table, print the 0th + entry specially, and the rest of the members + normally. */ + if (cp_is_vtbl_ptr_type (elttype)) + { + i = 1; + fprintf_filtered (stream, _("%d vtable entries"), + len - 1); + } + value_print_array_elements (val, stream, recurse, options, i); + fprintf_filtered (stream, "}"); } - break; + } + else + { + /* Array of unspecified length: treat like pointer to first elt. */ + print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr, + 0, address, stream, recurse, options); + } +} - case TYPE_CODE_FLAGS: - if (options->format) - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - else - val_print_type_code_flags (type, valaddr + embedded_offset, stream); - break; +/* c_value_print_inner helper for TYPE_CODE_PTR. */ - case TYPE_CODE_FUNC: - case TYPE_CODE_METHOD: - if (options->format) - { - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - break; - } - /* FIXME, we should consider, at least for ANSI C language, eliminating - the distinction made between FUNCs and POINTERs to FUNCs. */ - fprintf_filtered (stream, "{"); - type_print (type, "", stream, -1); - fprintf_filtered (stream, "} "); - /* Try to print what function it points to, and its address. */ - print_address_demangle (gdbarch, address, stream, demangle); - break; +static void +c_value_print_ptr (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + if (options->format && options->format != 's') + { + value_print_scalar_formatted (val, options, 0, stream); + return; + } - case TYPE_CODE_BOOL: - if (options->format || options->output_format) - { - struct value_print_options opts = *options; - opts.format = (options->format ? options->format - : options->output_format); - print_scalar_formatted (valaddr + embedded_offset, type, - &opts, 0, stream); - } - else - { - val = unpack_long (type, valaddr + embedded_offset); - if (val == 0) - fputs_filtered ("false", stream); - else if (val == 1) - fputs_filtered ("true", stream); - else - print_longest (stream, 'd', 0, val); - } - break; + struct type *type = check_typedef (value_type (val)); + struct gdbarch *arch = get_type_arch (type); + const gdb_byte *valaddr = value_contents_for_printing (val); - case TYPE_CODE_RANGE: - /* FIXME: create_range_type does not set the unsigned bit in a - range type (I think it probably should copy it from the target - type), so we won't print values which are too large to - fit in a signed integer correctly. */ - /* FIXME: Doesn't handle ranges of enums correctly. (Can't just - print with the target type, though, because the size of our type - and the target type might differ). */ - /* FALLTHROUGH */ + if (options->vtblprint && cp_is_vtbl_ptr_type (type)) + { + /* Print the unmangled name if desired. */ + /* Print vtable entry - we only get here if we ARE using + -fvtable_thunks. (Otherwise, look under + TYPE_CODE_STRUCT.) */ + CORE_ADDR addr = extract_typed_address (valaddr, type); - case TYPE_CODE_INT: - if (options->format || options->output_format) - { - struct value_print_options opts = *options; - opts.format = (options->format ? options->format - : options->output_format); - print_scalar_formatted (valaddr + embedded_offset, type, - &opts, 0, stream); - } - else - { - val_print_type_code_int (type, valaddr + embedded_offset, stream); - /* C and C++ has no single byte int type, char is used instead. - Since we don't know whether the value is really intended to - be used as an integer or a character, print the character - equivalent as well. */ - if (textual_element_type (unresolved_type, options->format)) - { - fputs_filtered (" ", stream); - LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset), - unresolved_type, stream); - } - } - break; + print_function_pointer_address (options, arch, addr, stream); + } + else + { + struct type *unresolved_elttype = TYPE_TARGET_TYPE (type); + struct type *elttype = check_typedef (unresolved_elttype); + CORE_ADDR addr = unpack_pointer (type, valaddr); - case TYPE_CODE_CHAR: - if (options->format || options->output_format) - { - struct value_print_options opts = *options; - opts.format = (options->format ? options->format - : options->output_format); - print_scalar_formatted (valaddr + embedded_offset, type, - &opts, 0, stream); - } - else + print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr, + 0, addr, stream, recurse, options); + } +} + +/* c_value_print helper for TYPE_CODE_STRUCT and TYPE_CODE_UNION. */ + +static void +c_value_print_struct (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = check_typedef (value_type (val)); + + if (type->code () == TYPE_CODE_UNION && recurse && !options->unionprint) + fprintf_filtered (stream, "{...}"); + else if (options->vtblprint && cp_is_vtbl_ptr_type (type)) + { + /* Print the unmangled name if desired. */ + /* Print vtable entry - we only get here if NOT using + -fvtable_thunks. (Otherwise, look under + TYPE_CODE_PTR.) */ + struct gdbarch *gdbarch = get_type_arch (type); + int offset = TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8; + struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET); + const gdb_byte *valaddr = value_contents_for_printing (val); + CORE_ADDR addr = extract_typed_address (valaddr + offset, field_type); + + print_function_pointer_address (options, gdbarch, addr, stream); + } + else + cp_print_value_fields (val, stream, recurse, options, NULL, 0); +} + +/* c_value_print helper for TYPE_CODE_INT. */ + +static void +c_value_print_int (struct value *val, struct ui_file *stream, + const struct value_print_options *options) +{ + if (options->format || options->output_format) + { + struct value_print_options opts = *options; + + opts.format = (options->format ? options->format + : options->output_format); + value_print_scalar_formatted (val, &opts, 0, stream); + } + else + { + value_print_scalar_formatted (val, options, 0, stream); + /* C and C++ has no single byte int type, char is used + instead. Since we don't know whether the value is really + intended to be used as an integer or a character, print + the character equivalent as well. */ + struct type *type = value_type (val); + const gdb_byte *valaddr = value_contents_for_printing (val); + if (c_textual_element_type (type, options->format)) { - val = unpack_long (type, valaddr + embedded_offset); - if (TYPE_UNSIGNED (type)) - fprintf_filtered (stream, "%u", (unsigned int) val); - else - fprintf_filtered (stream, "%d", (int) val); fputs_filtered (" ", stream); - LA_PRINT_CHAR ((unsigned char) val, unresolved_type, stream); + LA_PRINT_CHAR (unpack_long (type, valaddr), type, stream); } - break; + } +} - case TYPE_CODE_FLT: - if (options->format) - { - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - } - else - { - print_floating (valaddr + embedded_offset, type, stream); - } +/* c_value_print helper for TYPE_CODE_MEMBERPTR. */ + +static void +c_value_print_memberptr (struct value *val, struct ui_file *stream, + int recurse, + const struct value_print_options *options) +{ + if (!options->format) + { + struct type *type = check_typedef (value_type (val)); + const gdb_byte *valaddr = value_contents_for_printing (val); + cp_print_class_member (valaddr, type, stream, "&"); + } + else + generic_value_print (val, stream, recurse, options, &c_decorations); +} + +/* See c-lang.h. */ + +void +c_value_print_inner (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = value_type (val); + const gdb_byte *valaddr = value_contents_for_printing (val); + + type = check_typedef (type); + switch (type->code ()) + { + case TYPE_CODE_ARRAY: + c_value_print_array (val, stream, recurse, options); break; - case TYPE_CODE_DECFLOAT: - if (options->format) - print_scalar_formatted (valaddr + embedded_offset, type, - options, 0, stream); - else - print_decimal_floating (valaddr + embedded_offset, type, stream); + case TYPE_CODE_METHODPTR: + cplus_print_method_ptr (valaddr, type, stream); break; - case TYPE_CODE_VOID: - fprintf_filtered (stream, "void"); + case TYPE_CODE_PTR: + c_value_print_ptr (val, stream, recurse, options); break; - case TYPE_CODE_ERROR: - fprintf_filtered (stream, _("")); + case TYPE_CODE_UNION: + case TYPE_CODE_STRUCT: + c_value_print_struct (val, stream, recurse, options); break; - case TYPE_CODE_UNDEF: - /* This happens (without TYPE_FLAG_STUB set) on systems which don't use - dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" - and no complete type for struct foo in that file. */ - fprintf_filtered (stream, _("")); + case TYPE_CODE_INT: + c_value_print_int (val, stream, options); break; - case TYPE_CODE_COMPLEX: - if (options->format) - print_scalar_formatted (valaddr + embedded_offset, - TYPE_TARGET_TYPE (type), - options, 0, stream); - else - print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type), - stream); - fprintf_filtered (stream, " + "); - if (options->format) - print_scalar_formatted (valaddr + embedded_offset - + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), - TYPE_TARGET_TYPE (type), - options, 0, stream); - else - print_floating (valaddr + embedded_offset - + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), - TYPE_TARGET_TYPE (type), - stream); - fprintf_filtered (stream, " * I"); + case TYPE_CODE_MEMBERPTR: + c_value_print_memberptr (val, stream, recurse, options); break; + case TYPE_CODE_REF: + case TYPE_CODE_RVALUE_REF: + case TYPE_CODE_ENUM: + case TYPE_CODE_FLAGS: + case TYPE_CODE_FUNC: + case TYPE_CODE_METHOD: + case TYPE_CODE_BOOL: + case TYPE_CODE_RANGE: + case TYPE_CODE_FLT: + case TYPE_CODE_DECFLOAT: + case TYPE_CODE_VOID: + case TYPE_CODE_ERROR: + case TYPE_CODE_UNDEF: + case TYPE_CODE_COMPLEX: + case TYPE_CODE_CHAR: default: - error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type)); + generic_value_print (val, stream, recurse, options, &c_decorations); + break; } - gdb_flush (stream); - return (0); } + -int +void c_value_print (struct value *val, struct ui_file *stream, const struct value_print_options *options) { - struct type *type, *real_type, *val_type; - int full, top, using_enc; + struct type *type, *real_type; + int full, using_enc; + LONGEST top; struct value_print_options opts = *options; opts.deref_ref = 1; @@ -602,67 +510,64 @@ c_value_print (struct value *val, struct ui_file *stream, C++: if it is a member pointer, we will take care of that when we print it. */ - /* Preserve the original type before stripping typedefs. We prefer - to pass down the original type when possible, but for local - checks it is better to look past the typedefs. */ - val_type = value_type (val); - type = check_typedef (val_type); + type = check_typedef (value_type (val)); - if (TYPE_CODE (type) == TYPE_CODE_PTR - || TYPE_CODE (type) == TYPE_CODE_REF) + if (type->code () == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type)) { + struct type *original_type = value_type (val); + /* Hack: remove (char *) for char strings. Their type is indicated by the quoted string anyway. - (Don't use textual_element_type here; quoted strings + (Don't use c_textual_element_type here; quoted strings are always exactly (char *), (wchar_t *), or the like. */ - if (TYPE_CODE (val_type) == TYPE_CODE_PTR - && TYPE_NAME (val_type) == NULL - && TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL - && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), "char") == 0 - || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type))))) + if (original_type->code () == TYPE_CODE_PTR + && original_type->name () == NULL + && TYPE_TARGET_TYPE (original_type)->name () != NULL + && (strcmp (TYPE_TARGET_TYPE (original_type)->name (), + "char") == 0 + || textual_name (TYPE_TARGET_TYPE (original_type)->name ()))) { - /* Print nothing */ + /* Print nothing. */ } else if (options->objectprint - && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) + && (TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_STRUCT)) { + int is_ref = TYPE_IS_REFERENCE (type); + enum type_code refcode = TYPE_CODE_UNDEF; - if (TYPE_CODE(type) == TYPE_CODE_REF) + if (is_ref) { - /* Copy value, change to pointer, so we don't get an - * error about a non-pointer type in value_rtti_target_type - */ - struct value *temparg; - temparg=value_copy(val); - deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type))); - val=temparg; + val = value_addr (val); + refcode = type->code (); } - /* Pointer to class, check real type of object */ + + /* Pointer to class, check real type of object. */ fprintf_filtered (stream, "("); - real_type = value_rtti_target_type (val, &full, &top, &using_enc); - if (real_type) + + if (value_entirely_available (val)) { - /* RTTI entry found */ - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - /* create a pointer type pointing to the real type */ - type = lookup_pointer_type (real_type); - } - else - { - /* create a reference type referencing the real type */ - type = lookup_reference_type (real_type); - } - /* JYG: Need to adjust pointer value. */ - /* NOTE: cagney/2005-01-02: THIS IS BOGUS. */ - value_contents_writeable (val)[0] -= top; - - /* Note: When we look up RTTI entries, we don't get any - information on const or volatile attributes */ - } - type_print (type, "", stream, -1); + real_type = value_rtti_indirect_type (val, &full, &top, + &using_enc); + if (real_type) + { + /* RTTI entry found. */ + + /* Need to adjust pointer value. */ + val = value_from_pointer (real_type, + value_as_address (val) - top); + + /* Note: When we look up RTTI entries, we don't get + any information on const or volatile + attributes. */ + } + } + + if (is_ref) + val = value_ref (value_ind (val), refcode); + + type = value_type (val); + type_print (type, "", stream, -1); fprintf_filtered (stream, ") "); - val_type = type; } else { @@ -676,40 +581,34 @@ c_value_print (struct value *val, struct ui_file *stream, if (!value_initialized (val)) fprintf_filtered (stream, " [uninitialized] "); - if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS)) + if (options->objectprint && (type->code () == TYPE_CODE_STRUCT)) { - /* Attempt to determine real type of object */ + /* Attempt to determine real type of object. */ real_type = value_rtti_type (val, &full, &top, &using_enc); if (real_type) { - /* We have RTTI information, so use it */ - val = value_full_object (val, real_type, full, top, using_enc); + /* We have RTTI information, so use it. */ + val = value_full_object (val, real_type, + full, top, using_enc); + /* In a destructor we might see a real type that is a + superclass of the object's type. In this case it is + better to leave the object as-is. */ + if (!(full + && (TYPE_LENGTH (real_type) + < TYPE_LENGTH (value_enclosing_type (val))))) + val = value_cast (real_type, val); fprintf_filtered (stream, "(%s%s) ", - TYPE_NAME (real_type), + real_type->name (), full ? "" : _(" [incomplete object]")); - /* Print out object: enclosing type is same as real_type if full */ - return val_print (value_enclosing_type (val), - value_contents_all (val), 0, - value_address (val), stream, 0, - &opts, current_language); - /* Note: When we look up RTTI entries, we don't get any information on - const or volatile attributes */ } else if (type != check_typedef (value_enclosing_type (val))) { - /* No RTTI information, so let's do our best */ + /* No RTTI information, so let's do our best. */ fprintf_filtered (stream, "(%s ?) ", - TYPE_NAME (value_enclosing_type (val))); - return val_print (value_enclosing_type (val), - value_contents_all (val), 0, - value_address (val), stream, 0, - &opts, current_language); + value_enclosing_type (val)->name ()); + val = value_cast (value_enclosing_type (val), val); } - /* Otherwise, we end up at the return outside this "if" */ } - return val_print (val_type, value_contents_all (val), - value_embedded_offset (val), - value_address (val), - stream, 0, &opts, current_language); + common_val_print (val, stream, 0, &opts, current_language); }