/* Support for printing C++ values for GDB, the GNU debugger.
Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009
+ 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GDB.
#include "valprint.h"
#include "cp-support.h"
#include "language.h"
+#include "python/python.h"
/* Controls printing of vtbl's */
static void
static struct obstack dont_print_vb_obstack;
static struct obstack dont_print_statmem_obstack;
+static struct obstack dont_print_stat_array_obstack;
extern void _initialize_cp_valprint (void);
static void cp_print_value (struct type *, struct type *, const gdb_byte *,
int, CORE_ADDR, struct ui_file *, int,
+ const struct value *,
const struct value_print_options *, struct type **);
cp_print_value_fields (struct type *type, struct type *real_type,
const gdb_byte *valaddr, int offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
+ const struct value *val,
const struct value_print_options *options,
struct type **dont_print_vb, int dont_print_statmem)
{
int i, len, n_baseclasses;
- char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);
int fields_seen = 0;
+ static int last_set_recurse = -1;
CHECK_TYPEDEF (type);
+
+ if (recurse == 0)
+ {
+ /* Any object can be left on obstacks only during an unexpected error. */
+
+ if (obstack_object_size (&dont_print_statmem_obstack) > 0)
+ {
+ obstack_free (&dont_print_statmem_obstack, NULL);
+ obstack_begin (&dont_print_statmem_obstack, 32 * sizeof (CORE_ADDR));
+ }
+ if (obstack_object_size (&dont_print_stat_array_obstack) > 0)
+ {
+ obstack_free (&dont_print_stat_array_obstack, NULL);
+ obstack_begin (&dont_print_stat_array_obstack,
+ 32 * sizeof (struct type *));
+ }
+ }
fprintf_filtered (stream, "{");
len = TYPE_NFIELDS (type);
if (n_baseclasses > 0)
cp_print_value (type, real_type, valaddr, offset, address, stream,
- recurse + 1, options, dont_print_vb);
+ recurse + 1, val, options, dont_print_vb);
/* Second, print out data fields */
fprintf_filtered (stream, "<No data fields>");
else
{
- struct obstack tmp_obstack = dont_print_statmem_obstack;
-
+ int statmem_obstack_initial_size = 0;
+ int stat_array_obstack_initial_size = 0;
+
if (dont_print_statmem == 0)
{
- /* If we're at top level, carve out a completely fresh
- chunk of the obstack and use that until this particular
- invocation returns. */
- obstack_finish (&dont_print_statmem_obstack);
+ statmem_obstack_initial_size =
+ obstack_object_size (&dont_print_statmem_obstack);
+
+ if (last_set_recurse != recurse)
+ {
+ stat_array_obstack_initial_size =
+ obstack_object_size (&dont_print_stat_array_obstack);
+
+ last_set_recurse = recurse;
+ }
}
for (i = n_baseclasses; i < len; i++)
{
fputs_filtered ("<optimized out or zero length>", stream);
}
+ else if (!value_bits_valid (val, TYPE_FIELD_BITPOS (type, i),
+ TYPE_FIELD_BITSIZE (type, i)))
+ {
+ fputs_filtered (_("<value optimized out>"), stream);
+ }
else
{
struct value_print_options opts = *options;
+
opts.deref_ref = 0;
v = value_from_longest
(TYPE_FIELD_TYPE (type, i),
else if (field_is_static (&TYPE_FIELD (type, i)))
{
struct value *v = value_static_field (type, i);
+
if (v == NULL)
fputs_filtered ("<optimized out>", stream);
else
else
{
struct value_print_options opts = *options;
+
opts.deref_ref = 0;
val_print (TYPE_FIELD_TYPE (type, i),
valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8,
- address + TYPE_FIELD_BITPOS (type, i) / 8,
- stream, recurse + 1, &opts,
+ address,
+ stream, recurse + 1, val, &opts,
current_language);
}
}
if (dont_print_statmem == 0)
{
- /* Free the space used to deal with the printing
- of the members from top level. */
- obstack_free (&dont_print_statmem_obstack, last_dont_print);
- dont_print_statmem_obstack = tmp_obstack;
+ int obstack_final_size =
+ obstack_object_size (&dont_print_statmem_obstack);
+
+ if (obstack_final_size > statmem_obstack_initial_size) {
+ /* In effect, a pop of the printed-statics stack. */
+
+ void *free_to_ptr =
+ obstack_next_free (&dont_print_statmem_obstack) -
+ (obstack_final_size - statmem_obstack_initial_size);
+
+ obstack_free (&dont_print_statmem_obstack,
+ free_to_ptr);
+ }
+
+ if (last_set_recurse != recurse)
+ {
+ int obstack_final_size =
+ obstack_object_size (&dont_print_stat_array_obstack);
+
+ if (obstack_final_size > stat_array_obstack_initial_size)
+ {
+ void *free_to_ptr =
+ obstack_next_free (&dont_print_stat_array_obstack) -
+ (obstack_final_size - stat_array_obstack_initial_size);
+
+ obstack_free (&dont_print_stat_array_obstack,
+ free_to_ptr);
+ }
+ last_set_recurse = -1;
+ }
}
if (options->pretty)
fprintf_filtered (stream, "}");
}
+/* Like cp_print_value_fields, but find the runtime type of the object
+ and pass it as the `real_type' argument to cp_print_value_fields.
+ This function is a hack to work around the fact that
+ common_val_print passes the embedded offset to val_print, but not
+ the enclosing type. */
+
+void
+cp_print_value_fields_rtti (struct type *type,
+ const gdb_byte *valaddr, int offset,
+ CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ const struct value *val,
+ const struct value_print_options *options,
+ struct type **dont_print_vb,
+ int dont_print_statmem)
+{
+ struct type *real_type = NULL;
+
+ /* We require all bits to be valid in order to attempt a
+ conversion. */
+ if (value_bits_valid (val, TARGET_CHAR_BIT * offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
+ {
+ struct value *value;
+ int full, top, using_enc;
+
+ /* Ugh, we have to convert back to a value here. */
+ value = value_from_contents_and_address (type, valaddr + offset,
+ address + offset);
+ /* We don't actually care about most of the result here -- just the
+ type. We already have the correct offset, due to how val_print
+ was initially called. */
+ real_type = value_rtti_type (value, &full, &top, &using_enc);
+ }
+
+ if (!real_type)
+ real_type = type;
+
+ cp_print_value_fields (type, real_type, valaddr, offset,
+ address, stream, recurse, val, options,
+ dont_print_vb, dont_print_statmem);
+}
+
/* Special val_print routine to avoid printing multiple copies of virtual
baseclasses. */
cp_print_value (struct type *type, struct type *real_type,
const gdb_byte *valaddr, int offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
+ const struct value *val,
const struct value_print_options *options,
struct type **dont_print_vb)
{
thisoffset = offset;
thistype = real_type;
- boffset = baseclass_offset (type, i, valaddr + offset, address);
+ boffset = baseclass_offset (type, i, valaddr + offset, address + offset);
skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1;
if (BASETYPE_VIA_VIRTUAL (type, i))
if (boffset != -1
&& ((boffset + offset) < 0
- || (boffset + offset) >= TYPE_LENGTH (type)))
+ || (boffset + offset) >= TYPE_LENGTH (real_type)))
{
/* FIXME (alloca): unsafe if baseclass is really really large. */
gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
+
base_valaddr = buf;
if (target_read_memory (address + boffset, buf,
TYPE_LENGTH (baseclass)) != 0)
if (skip >= 1)
fprintf_filtered (stream, "<invalid address>");
else
- cp_print_value_fields (baseclass, thistype, base_valaddr,
- thisoffset + boffset, address + boffset,
- stream, recurse, options,
- ((struct type **)
- obstack_base (&dont_print_vb_obstack)),
- 0);
+ {
+ int result = 0;
+
+ /* Attempt to run the Python pretty-printers on the
+ baseclass if possible. */
+ if (!options->raw)
+ result = apply_val_pretty_printer (baseclass, base_valaddr,
+ thisoffset + boffset,
+ address,
+ stream, recurse, val,
+ options,
+ current_language);
+
+ if (!result)
+ cp_print_value_fields (baseclass, thistype, base_valaddr,
+ thisoffset + boffset, address,
+ stream, recurse, val, options,
+ ((struct type **)
+ obstack_base (&dont_print_vb_obstack)),
+ 0);
+ }
fputs_filtered (", ", stream);
flush_it:
const struct value_print_options *options)
{
struct value_print_options opts;
+
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
{
CORE_ADDR *first_dont_print;
+ CORE_ADDR addr;
int i;
first_dont_print
= (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
- i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack)
- - first_dont_print;
+ i = obstack_object_size (&dont_print_statmem_obstack)
+ / sizeof (CORE_ADDR);
while (--i >= 0)
{
- if (VALUE_ADDRESS (val) == first_dont_print[i])
+ if (value_address (val) == first_dont_print[i])
{
fputs_filtered ("<same as static member of an already"
" seen type>",
}
}
- obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val),
+ addr = value_address (val);
+ obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
sizeof (CORE_ADDR));
-
CHECK_TYPEDEF (type);
- cp_print_value_fields (type, type, value_contents_all (val),
- value_embedded_offset (val), VALUE_ADDRESS (val),
- stream, recurse, options, NULL, 1);
+ cp_print_value_fields (type, value_enclosing_type (val),
+ value_contents_for_printing (val),
+ value_embedded_offset (val), addr,
+ stream, recurse,
+ val, options, NULL, 1);
return;
}
+ if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ {
+ struct type **first_dont_print;
+ int i;
+ struct type *target_type = TYPE_TARGET_TYPE (type);
+
+ first_dont_print
+ = (struct type **) obstack_base (&dont_print_stat_array_obstack);
+ i = obstack_object_size (&dont_print_stat_array_obstack)
+ / sizeof (struct type *);
+
+ while (--i >= 0)
+ {
+ if (target_type == first_dont_print[i])
+ {
+ fputs_filtered ("<same as static member of an already"
+ " seen type>",
+ stream);
+ return;
+ }
+ }
+
+ obstack_grow (&dont_print_stat_array_obstack, (char *) &target_type,
+ sizeof (struct type *));
+ }
+
opts = *options;
opts.deref_ref = 0;
- val_print (type, value_contents_all (val),
- value_embedded_offset (val), VALUE_ADDRESS (val),
- stream, recurse, &opts, current_language);
+ val_print (type, value_contents_for_printing (val),
+ value_embedded_offset (val), value_address (val),
+ stream, recurse,
+ val, &opts, current_language);
}
field number. If OFFSET is not exactly at the start of some field, set
*DOMAIN to NULL. */
-void
+static void
cp_find_class_member (struct type **domain_p, int *fieldno,
LONGEST offset)
{
cp_print_class_member (const gdb_byte *valaddr, struct type *type,
struct ui_file *stream, char *prefix)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+
/* VAL is a byte offset into the structure type DOMAIN.
Find the name of the field for that offset and
print it. */
struct type *domain = TYPE_DOMAIN_TYPE (type);
- LONGEST val = extract_signed_integer (valaddr, TYPE_LENGTH (type));
+ LONGEST val;
unsigned int fieldno;
+ val = extract_signed_integer (valaddr, TYPE_LENGTH (type), byte_order);
+
/* Pointers to data members are usually byte offsets into an object.
Because a data member can have offset zero, and a NULL pointer to
member must be distinct from any valid non-NULL pointer to
if (domain != NULL)
{
char *name;
+
fputs_filtered (prefix, stream);
name = type_name_no_tag (domain);
if (name)
show_objectprint,
&setprintlist, &showprintlist);
+ obstack_begin (&dont_print_stat_array_obstack, 32 * sizeof (struct type *));
+ obstack_begin (&dont_print_statmem_obstack, 32 * sizeof (CORE_ADDR));
obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
- obstack_specify_allocation (&dont_print_statmem_obstack,
- 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR),
- xmalloc, xfree);
}
projects / deliverable / binutils-gdb.git / blobdiff