/* 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, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 1986, 1988-1989, 1991-2001, 2003, 2005-2012 Free
+ Software Foundation, Inc.
This file is part of GDB.
#include "target.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 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
if (format == 's')
{
- /* Print this as a string if we can manage it. For now, no
- wide character support. */
+ /* 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;
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. */
-
-int
-c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
- CORE_ADDR address, struct ui_file *stream, int recurse,
+static const struct generic_val_print_decorations c_decorations =
+{
+ "",
+ " + ",
+ " * I",
+ "true",
+ "false",
+ "void"
+};
+
+/* See val_print for a description of the various parameters of this
+ function; they are identical. */
+
+void
+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 *original_value,
const struct value_print_options *options)
{
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 int i = 0; /* Number of characters printed. */
unsigned len;
struct type *elttype, *unresolved_elttype;
struct type *unresolved_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"));
+
eltlen = TYPE_LENGTH (elttype);
- len = TYPE_LENGTH (type) / eltlen;
+ len = high_bound - low_bound + 1;
if (options->prettyprint_arrays)
{
print_spaces_filtered (2 + 2 * recurse, stream);
/* 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)
+ if (c_textual_element_type (unresolved_elttype,
+ options->format)
+ && value_bytes_available (original_value, embedded_offset,
+ TYPE_LENGTH (type))
&& value_bits_valid (original_value,
TARGET_CHAR_BIT * embedded_offset,
TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
- /* If requested, look for the first null char and only print
- elements up to it. */
+ /* 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;
{
fprintf_filtered (stream, "{");
/* If this is a virtual function table, print the 0th
- entry specially, and the rest of the members normally. */
+ 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);
+ fprintf_filtered (stream, _("%d vtable entries"),
+ len - 1);
}
else
{
i = 0;
}
- val_print_array_elements (type, valaddr + embedded_offset,
- address + embedded_offset, stream,
+ val_print_array_elements (type, valaddr, embedded_offset,
+ address, stream,
recurse, original_value, options, i);
fprintf_filtered (stream, "}");
}
break;
}
- /* Array of unspecified length: treat like pointer to first elt. */
- addr = address;
+ /* Array of unspecified length: treat like pointer to first
+ elt. */
+ addr = address + embedded_offset;
goto print_unpacked_pointer;
- case TYPE_CODE_MEMBERPTR:
- if (options->format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type,
- options, 0, stream);
- break;
- }
- 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);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, options, 0, stream);
break;
}
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.) */
+ -fvtable_thunks. (Otherwise, look under
+ TYPE_CODE_STRUCT.) */
CORE_ADDR addr
= extract_typed_address (valaddr + embedded_offset, type);
/* 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);
+ return;
}
if (options->addressprint)
/* For a pointer to a textual type, also print the string
pointed to, unless pointer is null. */
- if (c_textual_element_type (unresolved_elttype, options->format)
+ if (c_textual_element_type (unresolved_elttype,
+ options->format)
&& addr != 0)
{
- i = val_print_string (unresolved_elttype, addr, -1, stream,
- options);
+ i = val_print_string (unresolved_elttype, NULL,
+ addr, -1,
+ stream, options);
}
else if (cp_is_vtbl_member (type))
{
- /* print vtbl's nicely */
- CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset);
+ /* 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);
int is_this_fld;
if (msymbol != NULL)
- wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block,
- VAR_DOMAIN, &is_this_fld);
+ wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
+ block, VAR_DOMAIN,
+ &is_this_fld);
if (wsym)
{
wtype = unresolved_elttype;
}
vt_val = value_at (wtype, vt_address);
- common_val_print (vt_val, stream, recurse + 1, options,
- current_language);
+ common_val_print (vt_val, stream, recurse + 1,
+ options, current_language);
if (options->pretty)
{
fprintf_filtered (stream, "\n");
}
}
}
-
- /* 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)
- {
- 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);
- }
- else
- fputs_filtered ("???", stream);
+ return;
}
break;
}
/* Fall through. */
case TYPE_CODE_STRUCT:
- /*FIXME: Abstract this away */
+ /*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);
+ -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);
}
else
cp_print_value_fields_rtti (type, valaddr,
- embedded_offset, address, stream,
- recurse, original_value, options, NULL, 0);
- break;
-
- 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++)
- {
- QUIT;
- if (val == TYPE_FIELD_BITPOS (type, i))
- {
- break;
- }
- }
- if (i < len)
- {
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
- }
- else
- {
- print_longest (stream, 'd', 0, val);
- }
- break;
-
- 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;
-
- 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);
+ embedded_offset, address,
+ stream, recurse,
+ original_value, options,
+ NULL, 0);
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);
- 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;
-
- 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)
{
opts.format = (options->format ? options->format
: options->output_format);
- print_scalar_formatted (valaddr + embedded_offset, type,
- &opts, 0, stream);
+ val_print_scalar_formatted (type, valaddr, embedded_offset,
+ original_value, &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. */
+ 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 (c_textual_element_type (unresolved_type, options->format))
{
fputs_filtered (" ", stream);
- LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset),
+ LA_PRINT_CHAR (unpack_long (type, valaddr + embedded_offset),
unresolved_type, 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);
- print_scalar_formatted (valaddr + embedded_offset, type,
- &opts, 0, stream);
- }
- else
+ case TYPE_CODE_MEMBERPTR:
+ if (!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);
+ cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
+ break;
}
- break;
+ /* FALLTHROUGH */
+ case TYPE_CODE_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:
- if (options->format)
- {
- print_scalar_formatted (valaddr + embedded_offset, type,
- options, 0, stream);
- }
- else
- {
- print_floating (valaddr + embedded_offset, type, stream);
- }
- 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);
- break;
-
case TYPE_CODE_VOID:
- fprintf_filtered (stream, "void");
- 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:
- 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");
- break;
-
+ case TYPE_CODE_CHAR:
default:
- error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type));
+ generic_val_print (type, valaddr, embedded_offset, address,
+ stream, recurse, original_value, 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)
{
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
+ && (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 (options->objectprint
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
if (TYPE_CODE(type) == TYPE_CODE_REF)
{
/* Copy value, change to pointer, so we don't get an
- * error about a non-pointer type in value_rtti_target_type
- */
+ 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;
+ deprecated_set_value_type
+ (temparg, lookup_pointer_type (TYPE_TARGET_TYPE (type)));
+ val = temparg;
}
- /* 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)
- {
- /* 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 */
- }
+
+ if (value_entirely_available (val))
+ {
+ 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 (type, value_as_address (val) - top);
+
+ /* Note: When we look up RTTI entries, we don't get
+ any information on const or volatile
+ attributes. */
+ }
+ }
type_print (type, "", stream, -1);
fprintf_filtered (stream, ") ");
val_type = type;
if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS))
{
- /* 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_for_printing (val), 0,
- value_address (val), stream, 0,
- val, &opts, current_language);
- /* 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),
+ value_contents_for_printing (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_for_printing (val), 0,
- value_address (val), stream, 0,
- val, &opts, current_language);
+ val_print (value_enclosing_type (val),
+ value_contents_for_printing (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 (val_type, value_contents_for_printing (val),
- value_embedded_offset (val),
- value_address (val),
- stream, 0,
- val, &opts, current_language);
+ val_print (val_type, value_contents_for_printing (val),
+ value_embedded_offset (val),
+ value_address (val),
+ stream, 0,
+ val, &opts, current_language);
}
projects / external / binutils.git / blobdiff