/* 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.
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. */
-
-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. */
/* 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;
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. */
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
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;
}
/* 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;
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, _("<error type>"));
+ 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, _("<incomplete type>"));
+ 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);
}
+
\f
-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;
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
{
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);
}
projects / deliverable / binutils-gdb.git / blobdiff