/* Print values for GDB, the GNU debugger.
- Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
- 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1988-2012 Free Software Foundation, Inc.
This file is part of GDB.
}
}
-/* Helper function to check the validity of some bits of a value.
+/* See its definition in value.h. */
- If TYPE represents some aggregate type (e.g., a structure), return 1.
-
- Otherwise, any of the bytes starting at OFFSET and extending for
- TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and
- return 0. The checking is done using FUNCS.
-
- Otherwise, return 1. */
-
-static int
+int
valprint_check_validity (struct ui_file *stream,
struct type *type,
int embedded_offset,
fprintf_filtered (stream, _("<invalid address>"));
}
+/* A generic val_print that is suitable for use by language
+ implementations of the la_val_print method. This function can
+ handle most type codes, though not all, notably exception
+ TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
+ the caller.
+
+ Most arguments are as to val_print.
+
+ The additional DECORATIONS argument can be used to customize the
+ output in some small, language-specific ways. */
+
+void
+generic_val_print (struct type *type, const gdb_byte *valaddr,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ const struct value *original_value,
+ const struct value_print_options *options,
+ const struct generic_val_print_decorations *decorations)
+{
+ 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))
+ {
+ 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)
+ {
+ LONGEST low_bound, high_bound;
+
+ if (!get_array_bounds (type, &low_bound, &high_bound))
+ error (_("Could not determine the array high bound"));
+
+ if (options->prettyprint_arrays)
+ {
+ print_spaces_filtered (2 + 2 * recurse, stream);
+ }
+
+ fprintf_filtered (stream, "{");
+ val_print_array_elements (type, valaddr, embedded_offset,
+ address, stream,
+ recurse, original_value, options, 0);
+ fprintf_filtered (stream, "}");
+ break;
+ }
+ /* Array of unspecified length: treat like pointer to first
+ elt. */
+ addr = address + embedded_offset;
+ goto print_unpacked_pointer;
+
+ case TYPE_CODE_MEMBERPTR:
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ break;
+
+ case TYPE_CODE_PTR:
+ if (options->format && options->format != 's')
+ {
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ break;
+ }
+ unresolved_elttype = TYPE_TARGET_TYPE (type);
+ elttype = check_typedef (unresolved_elttype);
+ {
+ addr = unpack_pointer (type, valaddr + embedded_offset);
+ print_unpacked_pointer:
+
+ if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
+ {
+ /* Try to print what function it points to. */
+ print_function_pointer_address (gdbarch, addr, stream,
+ options->addressprint);
+ return;
+ }
+
+ if (options->addressprint)
+ fputs_filtered (paddress (gdbarch, addr), stream);
+ }
+ 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)
+ {
+ struct value *deref_val;
+
+ deref_val = coerce_ref_if_computed (original_value);
+ if (deref_val != NULL)
+ {
+ /* More complicated computed references are not supported. */
+ gdb_assert (embedded_offset == 0);
+ }
+ else
+ deref_val = value_at (TYPE_TARGET_TYPE (type),
+ unpack_pointer (type,
+ (valaddr
+ + embedded_offset)));
+
+ common_val_print (deref_val, stream, recurse, options,
+ current_language);
+ }
+ else
+ fputs_filtered ("???", stream);
+ }
+ break;
+
+ case TYPE_CODE_ENUM:
+ if (options->format)
+ {
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 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_ENUMVAL (type, i))
+ {
+ break;
+ }
+ }
+ if (i < len)
+ {
+ fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
+ }
+ else if (TYPE_FLAG_ENUM (type))
+ {
+ int first = 1;
+
+ /* We have a "flag" enum, so we try to decompose it into
+ pieces as appropriate. A flag enum has disjoint
+ constants by definition. */
+ fputs_filtered ("(", stream);
+ for (i = 0; i < len; ++i)
+ {
+ QUIT;
+
+ if ((val & TYPE_FIELD_ENUMVAL (type, i)) != 0)
+ {
+ if (!first)
+ fputs_filtered (" | ", stream);
+ first = 0;
+
+ val &= ~TYPE_FIELD_ENUMVAL (type, i);
+ fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
+ }
+ }
+
+ if (first || val != 0)
+ {
+ if (!first)
+ fputs_filtered (" | ", stream);
+ fputs_filtered ("unknown: ", stream);
+ print_longest (stream, 'd', 0, val);
+ }
+
+ fputs_filtered (")", stream);
+ }
+ else
+ print_longest (stream, 'd', 0, val);
+ break;
+
+ case TYPE_CODE_FLAGS:
+ if (options->format)
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ else
+ val_print_type_code_flags (type, valaddr + embedded_offset,
+ stream);
+ break;
+
+ case TYPE_CODE_FUNC:
+ case TYPE_CODE_METHOD:
+ if (options->format)
+ {
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, 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;
+
+ 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);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, &opts, 0, stream);
+ }
+ else
+ {
+ val = unpack_long (type, valaddr + embedded_offset);
+ if (val == 0)
+ fputs_filtered (decorations->false_name, stream);
+ else if (val == 1)
+ fputs_filtered (decorations->true_name, stream);
+ else
+ print_longest (stream, 'd', 0, val);
+ }
+ break;
+
+ 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 */
+
+ 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);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, &opts, 0, stream);
+ }
+ else
+ val_print_type_code_int (type, valaddr + embedded_offset, stream);
+ break;
+
+ 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);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, &opts, 0, stream);
+ }
+ else
+ {
+ 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 (val, unresolved_type, stream);
+ }
+ break;
+
+ case TYPE_CODE_FLT:
+ if (options->format)
+ {
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ }
+ else
+ {
+ print_floating (valaddr + embedded_offset, type, stream);
+ }
+ break;
+
+ case TYPE_CODE_DECFLOAT:
+ if (options->format)
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ else
+ print_decimal_floating (valaddr + embedded_offset,
+ type, stream);
+ break;
+
+ case TYPE_CODE_VOID:
+ fputs_filtered (decorations->void_name, stream);
+ break;
+
+ case TYPE_CODE_ERROR:
+ fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
+ 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>"));
+ break;
+
+ case TYPE_CODE_COMPLEX:
+ fprintf_filtered (stream, "%s", decorations->complex_prefix);
+ if (options->format)
+ val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
+ valaddr, embedded_offset,
+ original_value, options, 0, stream);
+ else
+ print_floating (valaddr + embedded_offset,
+ TYPE_TARGET_TYPE (type),
+ stream);
+ fprintf_filtered (stream, "%s", decorations->complex_infix);
+ if (options->format)
+ val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
+ valaddr,
+ embedded_offset
+ + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
+ original_value,
+ options, 0, stream);
+ else
+ print_floating (valaddr + embedded_offset
+ + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
+ TYPE_TARGET_TYPE (type),
+ stream);
+ fprintf_filtered (stream, "%s", decorations->complex_suffix);
+ break;
+
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_METHODPTR:
+ default:
+ error (_("Unhandled type code %d in symbol table."),
+ TYPE_CODE (type));
+ }
+ gdb_flush (stream);
+}
+
/* Print using the given LANGUAGE the data of type TYPE located at
VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
RECURSE indicates the amount of indentation to supply before
continuation lines; this amount is roughly twice the value of
- RECURSE.
-
- If the data is printed as a string, returns the number of string
- characters printed. */
+ RECURSE. */
-int
+void
val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
CORE_ADDR address, struct ui_file *stream, int recurse,
const struct value *val,
{
fprintf_filtered (stream, _("<incomplete type>"));
gdb_flush (stream);
- return (0);
+ return;
}
if (!valprint_check_validity (stream, real_type, embedded_offset, val))
- return 0;
+ return;
if (!options->raw)
{
address, stream, recurse,
val, options, language);
if (ret)
- return ret;
+ return;
}
/* Handle summary mode. If the value is a scalar, print it;
if (options->summary && !scalar_type_p (type))
{
fprintf_filtered (stream, "...");
- return 0;
+ return;
}
TRY_CATCH (except, RETURN_MASK_ERROR)
{
- ret = language->la_val_print (type, valaddr, embedded_offset, address,
- stream, recurse, val,
- &local_opts);
+ language->la_val_print (type, valaddr, embedded_offset, address,
+ stream, recurse, val,
+ &local_opts);
}
if (except.reason < 0)
fprintf_filtered (stream, _("<error reading variable>"));
-
- return ret;
}
/* Check whether the value VAL is printable. Return 1 if it is;
/* Print using the given LANGUAGE the value VAL onto stream STREAM according
to OPTIONS.
- If the data are a string pointer, returns the number of string characters
- printed.
-
This is a preferable interface to val_print, above, because it uses
GDB's value mechanism. */
-int
+void
common_val_print (struct value *val, struct ui_file *stream, int recurse,
const struct value_print_options *options,
const struct language_defn *language)
{
if (!value_check_printable (val, stream, options))
- return 0;
+ return;
if (language->la_language == language_ada)
/* The value might have a dynamic type, which would cause trouble
get a fixed representation of our value. */
val = ada_to_fixed_value (val);
- return val_print (value_type (val), value_contents_for_printing (val),
- value_embedded_offset (val), value_address (val),
- stream, recurse,
- val, options, language);
+ val_print (value_type (val), value_contents_for_printing (val),
+ value_embedded_offset (val), value_address (val),
+ stream, recurse,
+ val, options, language);
}
/* Print on stream STREAM the value VAL according to OPTIONS. The value
- is printed using the current_language syntax.
-
- If the object printed is a string pointer, return the number of string
- bytes printed. */
+ is printed using the current_language syntax. */
-int
+void
value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options)
{
if (!value_check_printable (val, stream, options))
- return 0;
+ return;
if (!options->raw)
{
val, options, current_language);
if (r)
- return r;
+ return;
}
- return LA_VALUE_PRINT (val, stream, options);
+ LA_VALUE_PRINT (val, stream, options);
}
/* Called by various <lang>_val_print routines to print
}
}
fputs_filtered ("]", stream);
+}
/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
according to OPTIONS and SIZE on STREAM. Format i is not supported
This is how the elements of an array or structure are printed
with a format. */
-}
void
val_print_scalar_formatted (struct type *type,
}
}
+/* Print function pointer with inferior address ADDRESS onto stdio
+ stream STREAM. */
+
+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);
+}
+
+
/* Print on STREAM using the given OPTIONS the index for the element
at INDEX of an array whose index type is INDEX_TYPE. */
projects / deliverable / binutils-gdb.git / blobdiff