/* 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
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "c-lang.h"
#include "cp-abi.h"
#include "target.h"
+#include "objfiles.h"
\f
-/* Print function pointer with inferior address ADDRESS onto stdio
- stream STREAM. */
+/* 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. */
-static void
-print_function_pointer_address (CORE_ADDR address, struct ui_file *stream)
+static int
+textual_name (const char *name)
+{
+ return (!strcmp (name, "wchar_t")
+ || !strcmp (name, "char16_t")
+ || !strcmp (name, "char32_t"));
+}
+
+/* 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.
+
+ 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. */
+
+int
+c_textual_element_type (struct type *type, char format)
{
- CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
- address,
- ¤t_target);
+ struct type *true_type, *iter_type;
+
+ if (format != 0 && format != 's')
+ return 0;
- /* If the function pointer is represented by a description, print the
- address of the description. */
- if (addressprint && func_addr != address)
+ /* We also rely on this for its side effect of setting up all the
+ typedef pointers. */
+ true_type = check_typedef (type);
+
+ /* TYPE_CODE_CHAR is always textual. */
+ if (TYPE_CODE (true_type) == TYPE_CODE_CHAR)
+ return 1;
+
+ /* Any other character-like types must be integral. */
+ if (TYPE_CODE (true_type) != TYPE_CODE_INT)
+ return 0;
+
+ /* We peel typedefs one by one, looking for a match. */
+ iter_type = type;
+ while (iter_type)
{
- fputs_filtered ("@", stream);
- deprecated_print_address_numeric (address, 1, stream);
- fputs_filtered (": ", stream);
+ /* Check the name of the type. */
+ if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type)))
+ return 1;
+
+ if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF)
+ break;
+
+ /* Peel a single typedef. If the typedef doesn't have a target
+ type, we use check_typedef and hope the result is ok -- it
+ might be for C++, where wchar_t is a built-in type. */
+ if (TYPE_TARGET_TYPE (iter_type))
+ iter_type = TYPE_TARGET_TYPE (iter_type);
+ else
+ iter_type = check_typedef (iter_type);
}
- print_address_demangle (func_addr, stream, demangle);
-}
-
-/* Print data of type TYPE located at VALADDR (within GDB), which came from
- the inferior at address ADDRESS, onto stdio stream STREAM according to
- FORMAT (a letter or 0 for natural format). The data at VALADDR is in
- target byte order.
+ 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
+ && TYPE_LENGTH (true_type) == 1)
+ return 1;
+ }
+ else
+ {
+ /* 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
+ && TYPE_LENGTH (true_type) == 1
+ && !TYPE_NOTTEXT (true_type))
+ return 1;
+ }
- If the data are a string pointer, returns the number of string characters
- printed.
+ return 0;
+}
- If DEREF_REF is nonzero, then dereference references, otherwise just print
- them like pointers.
+/* Decorations for C. */
- The PRETTY parameter controls prettyprinting. */
+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 format,
- int deref_ref, int recurse, enum val_prettyprint pretty)
+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)
{
- unsigned int i = 0; /* Number of characters printed */
- unsigned len;
- struct type *elttype;
- unsigned eltlen;
- LONGEST val;
- CORE_ADDR addr;
-
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_ARRAY:
- elttype = check_typedef (TYPE_TARGET_TYPE (type));
- if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
- {
- eltlen = TYPE_LENGTH (elttype);
- len = TYPE_LENGTH (type) / eltlen;
- if (prettyprint_arrays)
- {
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- /* For an array of chars, print with string syntax. */
- if (eltlen == 1 &&
- ((TYPE_CODE (elttype) == TYPE_CODE_INT && TYPE_NOSIGN (elttype))
- || ((current_language->la_language == language_m2)
- && (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
- && (format == 0 || format == 's'))
- {
- /* If requested, look for the first null char and only print
- elements up to it. */
- if (stop_print_at_null)
- {
- unsigned int temp_len;
-
- /* Look for a NULL char. */
- for (temp_len = 0;
- (valaddr + embedded_offset)[temp_len]
- && temp_len < len && temp_len < print_max;
- temp_len++);
- len = temp_len;
- }
+ int want_space = 0;
+ struct gdbarch *gdbarch = get_type_arch (type);
- LA_PRINT_STRING (stream, valaddr + embedded_offset, len, eltlen, 0);
- 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,
- format, deref_ref, recurse, pretty, i);
- fprintf_filtered (stream, "}");
- }
- break;
- }
- /* Array of unspecified length: treat like pointer to first elt. */
- addr = address;
- goto print_unpacked_pointer;
+ if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
+ {
+ /* Try to print what function it points to. */
+ print_function_pointer_address (options, gdbarch, address, stream);
+ return;
+ }
- case TYPE_CODE_MEMBERPTR:
- if (format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- break;
- }
- cp_print_class_member (valaddr + embedded_offset,
- TYPE_DOMAIN_TYPE (type),
- stream, "&");
- break;
+ 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;
+ }
- case TYPE_CODE_METHODPTR:
- cplus_print_method_ptr (valaddr + embedded_offset, type, stream);
- break;
+ /* For a pointer to a textual type, also print the string
+ pointed to, unless pointer is null. */
- case TYPE_CODE_PTR:
- if (format && format != 's')
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- break;
- }
- if (vtblprint && cp_is_vtbl_ptr_type (type))
+ 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 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 (addr, stream);
- break;
+ if (want_space)
+ fputs_filtered (" ", stream);
+ fputs_filtered (" <", stream);
+ fputs_filtered (msymbol.minsym->print_name (), stream);
+ fputs_filtered (">", stream);
+ want_space = 1;
}
- elttype = check_typedef (TYPE_TARGET_TYPE (type));
+
+ if (vt_address && options->vtblprint)
{
- 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 (addr, stream);
- /* 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 (addressprint && format != 's')
+ if (wsym)
{
- deprecated_print_address_numeric (addr, 1, stream);
+ wtype = SYMBOL_TYPE (wsym);
}
-
- /* For a pointer to char or unsigned char, also print the string
- pointed to, unless pointer is null. */
- /* FIXME: need to handle wchar_t here... */
-
- if (TYPE_LENGTH (elttype) == 1
- && TYPE_CODE (elttype) == TYPE_CODE_INT
- && (format == 0 || format == 's')
- && addr != 0)
+ else
{
- i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
+ wtype = unresolved_elttype;
}
- else if (cp_is_vtbl_member (type))
+ vt_val = value_at (wtype, vt_address);
+ common_val_print (vt_val, stream, recurse + 1, options,
+ current_language);
+ if (options->prettyformat)
{
- /* 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 && 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 (DEPRECATED_SYMBOL_NAME (msymbol), block,
- VAR_DOMAIN, &is_this_fld, NULL);
-
- if (wsym)
- {
- wtype = SYMBOL_TYPE (wsym);
- }
- else
- {
- wtype = TYPE_TARGET_TYPE (type);
- }
- vt_val = value_at (wtype, vt_address);
- common_val_print (vt_val, stream, format,
- deref_ref, recurse + 1, pretty);
- if (pretty)
- {
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- }
+ fprintf_filtered (stream, "\n");
+ print_spaces_filtered (2 + 2 * recurse, stream);
}
-
- /* 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 (addressprint)
+/* c_val_print helper for TYPE_CODE_ARRAY. */
+
+static void
+c_val_print_array (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
+ struct type *elttype = check_typedef (unresolved_elttype);
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
+
+ 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);
+ unsigned int i = 0; /* Number of characters printed. */
+
+ 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;
+ if (options->prettyformat_arrays)
{
- CORE_ADDR addr
- = extract_typed_address (valaddr + embedded_offset, type);
- fprintf_filtered (stream, "@");
- deprecated_print_address_numeric (addr, 1, stream);
- if (deref_ref)
- fputs_filtered (": ", stream);
+ print_spaces_filtered (2 + 2 * recurse, stream);
}
- /* De-reference the reference. */
- if (deref_ref)
+
+ /* 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 (original_value, embedded_offset,
+ TYPE_LENGTH (type))
+ && !value_bits_any_optimized_out (original_value,
+ TARGET_CHAR_BIT * embedded_offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
- if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
+ 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)
{
- struct value *deref_val =
- value_at
- (TYPE_TARGET_TYPE (type),
- unpack_pointer (lookup_pointer_type (builtin_type_void),
- valaddr + embedded_offset));
- common_val_print (deref_val, stream, format, deref_ref,
- recurse, pretty);
+ unsigned int temp_len;
+
+ for (temp_len = 0;
+ (temp_len < len
+ && temp_len < options->print_max
+ && extract_unsigned_integer (valaddr
+ + embedded_offset * unit_size
+ + 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 val
+ = extract_unsigned_integer (valaddr
+ + embedded_offset * unit_size
+ + temp_len * eltlen,
+ eltlen, byte_order);
+ if (val != 0)
+ force_ellipses = 1;
+ }
+
+ len = temp_len;
}
- else
- fputs_filtered ("???", stream);
- }
- break;
- case TYPE_CODE_UNION:
- if (recurse && !unionprint)
- {
- fprintf_filtered (stream, "{...}");
- break;
- }
- /* Fall through. */
- case TYPE_CODE_STRUCT:
- /*FIXME: Abstract this away */
- if (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 (addr, stream);
+ LA_PRINT_STRING (stream, unresolved_elttype,
+ valaddr + embedded_offset * unit_size, len,
+ NULL, force_ellipses, options);
+ i = len;
}
else
- cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream, format,
- recurse, pretty, NULL, 0);
- break;
-
- case TYPE_CODE_ENUM:
- if (format)
{
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- break;
- }
- len = TYPE_NFIELDS (type);
- val = unpack_long (type, valaddr + embedded_offset);
- for (i = 0; i < len; i++)
- {
- QUIT;
- if (val == TYPE_FIELD_BITPOS (type, i))
+ 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))
{
- break;
+ i = 1;
+ fprintf_filtered (stream, _("%d vtable entries"),
+ len - 1);
}
+ else
+ {
+ i = 0;
+ }
+ val_print_array_elements (type, embedded_offset,
+ address, stream,
+ recurse, original_value, options, i);
+ fprintf_filtered (stream, "}");
}
- if (i < len)
- {
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
- }
- else
- {
- print_longest (stream, 'd', 0, val);
- }
- break;
+ }
+ else
+ {
+ /* Array of unspecified length: treat like pointer to first elt. */
+ print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
+ embedded_offset, address + embedded_offset,
+ stream, recurse, options);
+ }
+}
- case TYPE_CODE_FLAGS:
- if (format)
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- else
- val_print_type_code_flags (type, valaddr + embedded_offset, stream);
- break;
+/* c_val_print helper for TYPE_CODE_PTR. */
- case TYPE_CODE_FUNC:
- case TYPE_CODE_METHOD:
- if (format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 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 (address, stream, demangle);
- break;
+static void
+c_val_print_ptr (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
- case TYPE_CODE_BOOL:
- format = format ? format : output_format;
- if (format)
- print_scalar_formatted (valaddr + embedded_offset, type, format, 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;
+ if (options->format && options->format != 's')
+ {
+ val_print_scalar_formatted (type, embedded_offset,
+ original_value, options, 0, 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 we ARE using
+ -fvtable_thunks. (Otherwise, look under
+ TYPE_CODE_STRUCT.) */
+ CORE_ADDR addr
+ = extract_typed_address (valaddr + embedded_offset, type);
+ struct gdbarch *gdbarch = get_type_arch (type);
+
+ print_function_pointer_address (options, gdbarch, 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 + embedded_offset * unit_size);
- 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 */
+ print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
+ embedded_offset, addr, stream, recurse, options);
+ }
+}
- case TYPE_CODE_INT:
- format = format ? format : output_format;
- if (format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 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 (TYPE_LENGTH (type) == 1)
- {
- fputs_filtered (" ", stream);
- LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
- stream);
- }
- }
- break;
+/* c_val_print helper for TYPE_CODE_STRUCT. */
- case TYPE_CODE_CHAR:
- format = format ? format : output_format;
- if (format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- }
- else
+static void
+c_val_print_struct (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ 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 = (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 (options, gdbarch, addr, stream);
+ }
+ else
+ cp_print_value_fields_rtti (type, valaddr,
+ embedded_offset, address,
+ stream, recurse,
+ original_value, options,
+ NULL, 0);
+}
+
+/* c_val_print helper for TYPE_CODE_UNION. */
+
+static void
+c_val_print_union (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ if (recurse && !options->unionprint)
+ {
+ fprintf_filtered (stream, "{...}");
+ }
+ else
+ {
+ c_val_print_struct (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_INT. */
+
+static void
+c_val_print_int (struct type *type, struct type *unresolved_type,
+ const gdb_byte *valaddr, int embedded_offset,
+ struct ui_file *stream, struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct gdbarch *arch = get_type_arch (type);
+ int unit_size = gdbarch_addressable_memory_unit_size (arch);
+
+ if (options->format || options->output_format)
+ {
+ struct value_print_options opts = *options;
+
+ opts.format = (options->format ? options->format
+ : options->output_format);
+ val_print_scalar_formatted (type, embedded_offset,
+ original_value, &opts, 0, stream);
+ }
+ else
+ {
+ val_print_scalar_formatted (type, embedded_offset,
+ original_value, 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. */
+ if (c_textual_element_type (unresolved_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, stream);
+ LA_PRINT_CHAR (unpack_long (type,
+ valaddr + embedded_offset * unit_size),
+ unresolved_type, stream);
}
+ }
+}
+
+/* c_val_print helper for TYPE_CODE_MEMBERPTR. */
+
+static void
+c_val_print_memberptr (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ if (!options->format)
+ {
+ cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
+ }
+ else
+ {
+ generic_val_print (type, embedded_offset, address, stream,
+ recurse, original_value, options, &c_decorations);
+ }
+}
+
+/* See val_print for a description of the various parameters of this
+ function; they are identical. */
+
+void
+c_val_print (struct type *type,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *original_value,
+ const struct value_print_options *options)
+{
+ struct type *unresolved_type = type;
+ const gdb_byte *valaddr = value_contents_for_printing (original_value);
+
+ type = check_typedef (type);
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_ARRAY:
+ c_val_print_array (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
break;
- case TYPE_CODE_FLT:
- if (format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
- }
- else
- {
- print_floating (valaddr + embedded_offset, type, stream);
- }
+ case TYPE_CODE_METHODPTR:
+ cplus_print_method_ptr (valaddr + embedded_offset, type, stream);
break;
- case TYPE_CODE_VOID:
- fprintf_filtered (stream, "void");
+ case TYPE_CODE_PTR:
+ c_val_print_ptr (type, valaddr, embedded_offset, stream, recurse,
+ original_value, options);
break;
- case TYPE_CODE_ERROR:
- fprintf_filtered (stream, _("<error type>"));
+ case TYPE_CODE_UNION:
+ c_val_print_union (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, 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, _("<incomplete type>"));
+ case TYPE_CODE_STRUCT:
+ c_val_print_struct (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, options);
break;
- case TYPE_CODE_COMPLEX:
- if (format)
- print_scalar_formatted (valaddr + embedded_offset,
- TYPE_TARGET_TYPE (type),
- format, 0, stream);
- else
- print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
- stream);
- fprintf_filtered (stream, " + ");
- if (format)
- print_scalar_formatted (valaddr + embedded_offset
- + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
- TYPE_TARGET_TYPE (type),
- format, 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_INT:
+ c_val_print_int (type, unresolved_type, valaddr, embedded_offset, stream,
+ original_value, options);
break;
+ case TYPE_CODE_MEMBERPTR:
+ c_val_print_memberptr (type, valaddr, embedded_offset, address, stream,
+ recurse, original_value, 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_val_print (type, embedded_offset, address,
+ stream, recurse, original_value, options,
+ &c_decorations);
+ break;
}
- gdb_flush (stream);
- return (0);
}
\f
-int
-c_value_print (struct value *val, struct ui_file *stream, int format,
- enum val_prettyprint pretty)
+void
+c_value_print (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options)
{
- struct type *type, *real_type;
- int full, top, using_enc;
+ struct type *type, *real_type, *val_type;
+ int full, using_enc;
+ LONGEST top;
+ struct value_print_options opts = *options;
+
+ opts.deref_ref = 1;
/* If it is a pointer, indicate what it points to.
C++: if it is a member pointer, we will take care
of that when we print it. */
- type = check_typedef (value_type (val));
+ /* 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);
- if (TYPE_CODE (type) == TYPE_CODE_PTR
- || TYPE_CODE (type) == TYPE_CODE_REF)
+ if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type))
{
/* Hack: remove (char *) for char strings. Their
- type is indicated by the quoted string anyway. */
- if (TYPE_CODE (type) == TYPE_CODE_PTR
- && TYPE_NAME (type) == NULL
- && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
- && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
+ type is indicated by the quoted string anyway.
+ (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)))))
{
- /* Print nothing */
+ /* Print nothing. */
}
- else if (objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
+ else if (options->objectprint
+ && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == 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 (type);
}
- /* 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. */
+ type = real_type;
+
+ /* 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
{
if (!value_initialized (val))
fprintf_filtered (stream, " [uninitialized] ");
- if (objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS))
+ if (options->objectprint && (TYPE_CODE (type) == 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);
fprintf_filtered (stream, "(%s%s) ",
TYPE_NAME (real_type),
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, format, 1, 0, pretty);
- /* Note: When we look up RTTI entries, we don't get any information on
- const or volatile attributes */
+ /* Print out object: enclosing type is same as real_type if
+ full. */
+ val_print (value_enclosing_type (val),
+ 0,
+ value_address (val), stream, 0,
+ val, &opts, current_language);
+ return;
+ /* 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, format, 1, 0, pretty);
+ val_print (value_enclosing_type (val),
+ 0,
+ value_address (val), stream, 0,
+ val, &opts, current_language);
+ return;
}
- /* Otherwise, we end up at the return outside this "if" */
+ /* Otherwise, we end up at the return outside this "if". */
}
- return val_print (type, value_contents_all (val),
- value_embedded_offset (val),
- VALUE_ADDRESS (val) + value_offset (val),
- stream, format, 1, 0, pretty);
+ val_print (val_type,
+ value_embedded_offset (val),
+ value_address (val),
+ stream, 0,
+ val, &opts, current_language);
}
projects / deliverable / binutils-gdb.git / blobdiff