/* Support for printing C++ values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1988, 1989, 1991, 1994, 1995, 1996
+ Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "obstack.h"
#include "gdbcmd.h"
#include "demangle.h"
#include "annotate.h"
+#include "gdb_string.h"
+#include "c-lang.h"
+#include "target.h"
int vtblprint; /* Controls printing of vtbl's */
int objectprint; /* Controls looking up an object's derived type
using what we find in its vtables. */
static int static_field_print; /* Controls printing of static fields. */
-struct obstack dont_print_obstack;
-static void
-cplus_print_value PARAMS ((struct type *, char *, GDB_FILE *, int, int,
- enum val_prettyprint, struct type **));
-
-/* BEGIN-FIXME: Hooks into typeprint.c, find a better home for prototypes. */
-
-extern void
-c_type_print_base PARAMS ((struct type *, GDB_FILE *, int, int));
+static struct obstack dont_print_vb_obstack;
+static struct obstack dont_print_statmem_obstack;
-extern void
-c_type_print_varspec_prefix PARAMS ((struct type *, GDB_FILE *, int, int));
-
-extern void
-cp_type_print_method_args PARAMS ((struct type **, char *, char *, int,
- GDB_FILE *));
-
-extern struct obstack dont_print_obstack;
+static void
+cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int,
+ enum val_prettyprint));
-/* END-FIXME */
+static void
+cp_print_value PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *,
+ int, int, enum val_prettyprint, struct type **));
void
cp_print_class_method (valaddr, type, stream)
struct symbol *sym;
unsigned len;
unsigned int i;
+ struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
- check_stub_type (TYPE_TARGET_TYPE (type));
- domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
+ domain = TYPE_DOMAIN_TYPE (target_type);
if (domain == (struct type *)NULL)
{
fprintf_filtered (stream, "<unknown>");
QUIT;
if (TYPE_FN_FIELD_VOFFSET (f, j) == offset)
{
+ if (TYPE_FN_FIELD_STUB (f, j))
+ check_stub_method (domain, i, j);
kind = "virtual ";
goto common;
}
common:
if (i < len)
{
+ char *demangled_name;
+
fprintf_filtered (stream, "&");
- c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0);
- fprintf_unfiltered (stream, kind);
- if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
- && TYPE_FN_FIELD_PHYSNAME (f, j)[1] == CPLUS_MARKER)
- {
- cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
- TYPE_FN_FIELDLIST_NAME (domain, i),
- 0, stream);
- }
+ fprintf_filtered (stream, kind);
+ demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j),
+ DMGL_ANSI | DMGL_PARAMS);
+ if (demangled_name == NULL)
+ fprintf_filtered (stream, "<badly mangled name %s>",
+ TYPE_FN_FIELD_PHYSNAME (f, j));
else
{
- cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "",
- TYPE_FN_FIELDLIST_NAME (domain, i),
- 0, stream);
+ fputs_filtered (demangled_name, stream);
+ free (demangled_name);
}
}
else
return 0;
}
-/* Mutually recursive subroutines of cplus_print_value and c_val_print to
- print out a structure's fields: cp_print_value_fields and cplus_print_value.
-
- TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
- same meanings as in cplus_print_value and c_val_print.
+/* Mutually recursive subroutines of cp_print_value and c_val_print to
+ print out a structure's fields: cp_print_value_fields and cp_print_value.
+
+ TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
+ same meanings as in cp_print_value and c_val_print.
DONT_PRINT is an array of baseclass types that we
should not print, or zero if called from top level. */
void
-cp_print_value_fields (type, valaddr, stream, format, recurse, pretty,
- dont_print)
+cp_print_value_fields (type, valaddr, address, stream, format, recurse, pretty,
+ dont_print_vb, dont_print_statmem)
struct type *type;
char *valaddr;
+ CORE_ADDR address;
GDB_FILE *stream;
int format;
int recurse;
enum val_prettyprint pretty;
- struct type **dont_print;
+ struct type **dont_print_vb;
+ int dont_print_statmem;
{
int i, len, n_baseclasses;
+ struct obstack tmp_obstack;
+ char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);
- check_stub_type (type);
+ CHECK_TYPEDEF (type);
fprintf_filtered (stream, "{");
len = TYPE_NFIELDS (type);
/* Print out baseclasses such that we don't print
duplicates of virtual baseclasses. */
if (n_baseclasses > 0)
- cplus_print_value (type, valaddr, stream, format, recurse+1, pretty,
- dont_print);
+ cp_print_value (type, valaddr, address, stream,
+ format, recurse+1, pretty, dont_print_vb);
if (!len && n_baseclasses == 1)
fprintf_filtered (stream, "<No data fields>");
extern int inspect_it;
int fields_seen = 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. */
+ tmp_obstack = dont_print_statmem_obstack;
+ obstack_finish (&dont_print_statmem_obstack);
+ }
+
for (i = n_baseclasses; i < len; i++)
{
/* If requested, skip printing of static fields. */
}
else if (TYPE_FIELD_STATIC (type, i))
{
- value_ptr v;
- char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, i);
- struct symbol *sym =
- lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL);
- if (sym == NULL)
+ value_ptr v = value_static_field (type, i);
+ if (v == NULL)
fputs_filtered ("<optimized out>", stream);
else
- {
- v = value_at (TYPE_FIELD_TYPE (type, i),
- (CORE_ADDR)SYMBOL_BLOCK_VALUE (sym));
- val_print (TYPE_FIELD_TYPE (type, i),
- VALUE_CONTENTS_RAW (v),
- VALUE_ADDRESS (v),
- stream, format, 0, recurse + 1, pretty);
- }
+ cp_print_static_field (TYPE_FIELD_TYPE (type, i), v,
+ stream, format, recurse + 1,
+ pretty);
}
else
{
val_print (TYPE_FIELD_TYPE (type, i),
valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
- 0, stream, format, 0, recurse + 1, pretty);
+ address + TYPE_FIELD_BITPOS (type, i) / 8,
+ stream, format, 0, recurse + 1, pretty);
}
}
annotate_field_end ();
}
+ 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;
+ }
+
if (pretty)
{
fprintf_filtered (stream, "\n");
baseclasses. */
static void
-cplus_print_value (type, valaddr, stream, format, recurse, pretty, dont_print)
+cp_print_value (type, valaddr, address, stream, format, recurse, pretty,
+ dont_print_vb)
struct type *type;
char *valaddr;
+ CORE_ADDR address;
GDB_FILE *stream;
int format;
int recurse;
enum val_prettyprint pretty;
- struct type **dont_print;
+ struct type **dont_print_vb;
{
struct obstack tmp_obstack;
struct type **last_dont_print
- = (struct type **)obstack_next_free (&dont_print_obstack);
+ = (struct type **)obstack_next_free (&dont_print_vb_obstack);
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
- if (dont_print == 0)
+ if (dont_print_vb == 0)
{
/* If we're at top level, carve out a completely fresh
chunk of the obstack and use that until this particular
invocation returns. */
- tmp_obstack = dont_print_obstack;
+ tmp_obstack = dont_print_vb_obstack;
/* Bump up the high-water mark. Now alpha is omega. */
- obstack_finish (&dont_print_obstack);
+ obstack_finish (&dont_print_vb_obstack);
}
for (i = 0; i < n_baseclasses; i++)
{
- /* FIXME-32x64--assumes that a target pointer can fit in a char *.
- Fix it by nuking baseclass_addr. */
- char *baddr;
- int err;
- char *basename;
-
- check_stub_type (TYPE_BASECLASS (type, i));
- basename = TYPE_NAME (TYPE_BASECLASS (type, i));
+ int boffset;
+ struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
+ char *basename = TYPE_NAME (baseclass);
+ char *base_valaddr;
if (BASETYPE_VIA_VIRTUAL (type, i))
{
struct type **first_dont_print
- = (struct type **)obstack_base (&dont_print_obstack);
+ = (struct type **)obstack_base (&dont_print_vb_obstack);
- int j = (struct type **)obstack_next_free (&dont_print_obstack)
+ int j = (struct type **)obstack_next_free (&dont_print_vb_obstack)
- first_dont_print;
while (--j >= 0)
- if (TYPE_BASECLASS (type, i) == first_dont_print[j])
+ if (baseclass == first_dont_print[j])
goto flush_it;
- obstack_ptr_grow (&dont_print_obstack, TYPE_BASECLASS (type, i));
+ obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
}
- /* Fix to use baseclass_offset instead. FIXME */
- baddr = baseclass_addr (type, i, valaddr, 0, &err);
- if (err == 0 && baddr == 0)
- error ("could not find virtual baseclass %s\n",
- basename ? basename : "");
+ boffset = baseclass_offset (type, i , valaddr, address);
if (pretty)
{
baseclass name. */
fputs_filtered (basename ? basename : "", stream);
fputs_filtered ("> = ", stream);
- if (err != 0)
+
+ /* The virtual base class pointer might have been clobbered by the
+ user program. Make sure that it still points to a valid memory
+ location. */
+
+ if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type)))
{
- fprintf_filtered (stream, "<invalid address ");
- print_address_numeric ((CORE_ADDR) baddr, 1, stream);
- fprintf_filtered (stream, ">");
+ base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass));
+ if (target_read_memory (address + boffset, base_valaddr,
+ TYPE_LENGTH (baseclass)) != 0)
+ boffset = -1;
}
else
- cp_print_value_fields (TYPE_BASECLASS (type, i), baddr, stream, format,
- recurse, pretty,
- (struct type **) obstack_base (&dont_print_obstack));
+ base_valaddr = valaddr + boffset;
+
+ if (boffset == -1)
+ fprintf_filtered (stream, "<invalid address>");
+ else
+ cp_print_value_fields (baseclass, base_valaddr, address + boffset,
+ stream, format, recurse, pretty,
+ (struct type **) obstack_base (&dont_print_vb_obstack),
+ 0);
fputs_filtered (", ", stream);
flush_it:
;
}
- if (dont_print == 0)
+ if (dont_print_vb == 0)
{
/* Free the space used to deal with the printing
of this type from top level. */
- obstack_free (&dont_print_obstack, last_dont_print);
+ obstack_free (&dont_print_vb_obstack, last_dont_print);
/* Reset watermark so that we can continue protecting
ourselves from whatever we were protecting ourselves. */
- dont_print_obstack = tmp_obstack;
+ dont_print_vb_obstack = tmp_obstack;
+ }
+}
+
+/* Print value of a static member.
+ To avoid infinite recursion when printing a class that contains
+ a static instance of the class, we keep the addresses of all printed
+ static member classes in an obstack and refuse to print them more
+ than once.
+
+ VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY
+ have the same meanings as in c_val_print. */
+
+static void
+cp_print_static_field (type, val, stream, format, recurse, pretty)
+ struct type *type;
+ value_ptr val;
+ GDB_FILE *stream;
+ int format;
+ int recurse;
+ enum val_prettyprint pretty;
+{
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ {
+ CORE_ADDR *first_dont_print;
+ 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;
+
+ while (--i >= 0)
+ {
+ if (VALUE_ADDRESS (val) == first_dont_print[i])
+ {
+ fputs_filtered ("<same as static member of an already seen type>",
+ stream);
+ return;
+ }
+ }
+
+ obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val),
+ sizeof (CORE_ADDR));
+
+ CHECK_TYPEDEF (type);
+ cp_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val),
+ stream, format, recurse, pretty, NULL, 1);
+ return;
}
+ val_print (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val),
+ stream, format, 0, recurse, pretty);
}
void
/* Give people the defaults which they are used to. */
objectprint = 0;
vtblprint = 0;
- obstack_begin (&dont_print_obstack, 32 * sizeof (struct type *));
+ 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, free);
}
projects / deliverable / binutils-gdb.git / blobdiff