/* Support for printing C++ values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 2000, 2001, 2002
- Free Software Foundation, Inc.
+
+ Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "obstack.h"
+#include "gdb_obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "c-lang.h"
#include "target.h"
#include "cp-abi.h"
+#include "valprint.h"
+#include "cp-support.h"
+#include "language.h"
-/* Indication of presence of HP-compiled object files */
-extern int hp_som_som_object_present; /* defined in symtab.c */
+/* Controls printing of vtbl's */
+int vtblprint;
+static void
+show_vtblprint (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Printing of C++ virtual function tables is %s.\n"),
+ value);
+}
+/* Controls looking up an object's derived type using what we find in
+ its vtables. */
+int objectprint;
+static void
+show_objectprint (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ fprintf_filtered (file, _("\
+Printing of object's derived type based on vtable info is %s.\n"),
+ value);
+}
-int vtblprint; /* Controls printing of vtbl's */
-int objectprint; /* Controls looking up an object's derived type
- using what we find in its vtables. */
int static_field_print; /* Controls printing of static fields. */
+static void
+show_static_field_print (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Printing of C++ static members is %s.\n"),
+ value);
+}
+
static struct obstack dont_print_vb_obstack;
static struct obstack dont_print_statmem_obstack;
struct ui_file *, int, int,
enum val_prettyprint);
-static void cp_print_value (struct type *, struct type *, char *, int,
- CORE_ADDR, struct ui_file *, int, int,
+static void cp_print_value (struct type *, struct type *, const gdb_byte *,
+ int, CORE_ADDR, struct ui_file *, int, int,
enum val_prettyprint, struct type **);
static void cp_print_hpacc_virtual_table_entries (struct type *, int *,
enum val_prettyprint);
-void
-cp_print_class_method (char *valaddr,
- struct type *type,
- struct ui_file *stream)
-{
- struct type *domain;
- struct fn_field *f = NULL;
- int j = 0;
- int len2;
- int offset;
- char *kind = "";
- CORE_ADDR addr;
- struct symbol *sym;
- unsigned len;
- unsigned int i;
- struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type));
-
- domain = TYPE_DOMAIN_TYPE (target_type);
- if (domain == (struct type *) NULL)
- {
- fprintf_filtered (stream, "<unknown>");
- return;
- }
- addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr);
- if (METHOD_PTR_IS_VIRTUAL (addr))
- {
- offset = METHOD_PTR_TO_VOFFSET (addr);
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- 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;
- }
- }
- }
- }
- else
- {
- sym = find_pc_function (addr);
- if (sym == 0)
- {
- /* 1997-08-01 Currently unsupported with HP aCC */
- if (hp_som_som_object_present)
- {
- fputs_filtered ("?? <not supported with HP aCC>", stream);
- return;
- }
- error ("invalid pointer to member function");
- }
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- QUIT;
- if (TYPE_FN_FIELD_STUB (f, j))
- check_stub_method (domain, i, j);
- if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)))
- {
- goto common;
- }
- }
- }
- }
- common:
- if (i < len)
- {
- char *demangled_name;
-
- fprintf_filtered (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
- {
- fputs_filtered (demangled_name, stream);
- xfree (demangled_name);
- }
- }
- else
- {
- fprintf_filtered (stream, "(");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, ") %d", (int) addr >> 3);
- }
-}
-
-/* This was what it was for gcc 2.4.5 and earlier. */
-static const char vtbl_ptr_name_old[] =
-{
- CPLUS_MARKER, 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_',
- 't', 'y', 'p', 'e', 0
-};
-
-/* It was changed to this after 2.4.5. */
+/* GCC versions after 2.4.5 use this. */
const char vtbl_ptr_name[] = "__vtbl_ptr_type";
-/* HP aCC uses different names */
+/* HP aCC uses different names. */
const char hpacc_vtbl_ptr_name[] = "__vfp";
const char hpacc_vtbl_ptr_type_name[] = "__vftyp";
-
/* Return truth value for assertion that TYPE is of the type
"pointer to virtual function". */
{
char *typename = type_name_no_tag (type);
- return (typename != NULL
- && (STREQ (typename, vtbl_ptr_name)
- || STREQ (typename, vtbl_ptr_name_old)));
+ return (typename != NULL && !strcmp (typename, vtbl_ptr_name));
}
/* Return truth value for the assertion that TYPE is of the type
should not print, or zero if called from top level. */
void
-cp_print_value_fields (struct type *type, struct type *real_type, char *valaddr,
- int offset, CORE_ADDR address, struct ui_file *stream,
- int format, int recurse, enum val_prettyprint pretty,
- struct type **dont_print_vb, int dont_print_statmem)
+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 format, int recurse,
+ enum val_prettyprint pretty,
+ 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);
int fields_seen = 0;
if ((len == n_baseclasses)
|| ((len - n_baseclasses == 1)
&& TYPE_HAS_VTABLE (type)
- && STREQN (TYPE_FIELD_NAME (type, n_baseclasses),
- hpacc_vtbl_ptr_name, 5))
+ && strncmp (TYPE_FIELD_NAME (type, n_baseclasses),
+ hpacc_vtbl_ptr_name, 5) == 0)
|| !len)
fprintf_filtered (stream, "<No data fields>");
else
{
- extern int inspect_it;
+ struct obstack tmp_obstack = dont_print_statmem_obstack;
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);
}
/* If a vtable pointer appears, we'll print it out later */
if (TYPE_HAS_VTABLE (type)
- && STREQN (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5))
+ && strncmp (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name,
+ 5) == 0)
continue;
if (fields_seen)
if (TYPE_FIELD_STATIC (type, i))
fputs_filtered ("static ", stream);
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
- language_cplus,
+ current_language->la_language,
DMGL_PARAMS | DMGL_ANSI);
fputs_filtered ("\" \"", stream);
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
- language_cplus,
+ current_language->la_language,
DMGL_PARAMS | DMGL_ANSI);
fputs_filtered ("\") \"", stream);
}
if (TYPE_FIELD_STATIC (type, i))
fputs_filtered ("static ", stream);
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
- language_cplus,
+ current_language->la_language,
DMGL_PARAMS | DMGL_ANSI);
annotate_field_name_end ();
/* do not print leading '=' in case of anonymous unions */
(TYPE_FIELD_TYPE (type, i),
unpack_field_as_long (type, valaddr + offset, i));
- val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v),
- 0, 0, stream, format, 0, recurse + 1, pretty);
+ common_val_print (v, stream, format, 0, recurse + 1, pretty);
}
}
else
} /* if there are data fields */
/* Now print out the virtual table pointer if there is one */
if (TYPE_HAS_VTABLE (type)
- && STREQN (TYPE_FIELD_NAME (type, n_baseclasses),
- hpacc_vtbl_ptr_name,
- 5))
+ && strncmp (TYPE_FIELD_NAME (type, n_baseclasses),
+ hpacc_vtbl_ptr_name, 5) == 0)
{
struct value *v;
/* First get the virtual table pointer and print it out */
v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long),
*(unsigned long *) (valaddr + offset));
- val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0,
- stream, format, 0, recurse + 1, pretty);
+ common_val_print (v, stream, format, 0, recurse + 1, pretty);
fields_seen = 1;
if (vtblprint)
baseclasses. */
static void
-cp_print_value (struct type *type, struct type *real_type, char *valaddr,
- int offset, CORE_ADDR address, struct ui_file *stream,
- int format, int recurse, enum val_prettyprint pretty,
- struct type **dont_print_vb)
+cp_print_value (struct type *type, struct type *real_type,
+ const gdb_byte *valaddr, int offset, CORE_ADDR address,
+ struct ui_file *stream, int format, int recurse,
+ enum val_prettyprint pretty, struct type **dont_print_vb)
{
- struct obstack tmp_obstack;
struct type **last_dont_print
= (struct type **) obstack_next_free (&dont_print_vb_obstack);
+ struct obstack tmp_obstack = dont_print_vb_obstack;
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
int thisoffset;
struct type *thistype;
/* 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_vb_obstack;
/* Bump up the high-water mark. Now alpha is omega. */
obstack_finish (&dont_print_vb_obstack);
}
int skip;
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
char *basename = TYPE_NAME (baseclass);
- char *base_valaddr;
+ const gdb_byte *base_valaddr;
if (BASETYPE_VIA_VIRTUAL (type, i))
{
find_rt_vbase_offset (type, TYPE_BASECLASS (type, i),
valaddr, offset, &boffset, &skip);
if (skip >= 0)
- error ("Virtual base class offset not found from vtable while"
- " printing");
+ error (_("Virtual base class offset not found from vtable while"
+ " printing"));
base_valaddr = valaddr;
}
else
{
boffset = baseclass_offset (type, i,
valaddr + offset,
- address + offset);
+ address);
skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1;
if (BASETYPE_VIA_VIRTUAL (type, i))
|| (boffset + offset) >= TYPE_LENGTH (type)))
{
/* FIXME (alloca): unsafe if baseclass is really really large. */
- base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass));
- if (target_read_memory (address + offset + boffset, base_valaddr,
+ gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
+ base_valaddr = buf;
+ if (target_read_memory (address + boffset, buf,
TYPE_LENGTH (baseclass)) != 0)
skip = 1;
+ address = address + boffset;
thisoffset = 0;
boffset = 0;
thistype = baseclass;
fprintf_filtered (stream, "<invalid address>");
else
cp_print_value_fields (baseclass, thistype, base_valaddr,
- thisoffset + boffset, address, stream, format,
+ thisoffset + boffset, address + boffset,
+ stream, format,
recurse, pretty,
((struct type **)
obstack_base (&dont_print_vb_obstack)),
sizeof (CORE_ADDR));
CHECK_TYPEDEF (type);
- cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val),
- VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val),
+ cp_print_value_fields (type, type, value_contents_all (val),
+ value_embedded_offset (val), VALUE_ADDRESS (val),
stream, format, recurse, pretty, NULL, 1);
return;
}
- val_print (type, VALUE_CONTENTS_ALL (val),
- VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val),
+ val_print (type, value_contents_all (val),
+ value_embedded_offset (val), VALUE_ADDRESS (val),
stream, format, 0, recurse, pretty);
}
+
+/* Find the field in *DOMAIN, or its non-virtual base classes, with bit offset
+ OFFSET. Set *DOMAIN to the containing type and *FIELDNO to the containing
+ field number. If OFFSET is not exactly at the start of some field, set
+ *DOMAIN to NULL. */
+
void
-cp_print_class_member (char *valaddr, struct type *domain,
- struct ui_file *stream, char *prefix)
+cp_find_class_member (struct type **domain_p, int *fieldno,
+ LONGEST offset)
{
+ struct type *domain;
+ unsigned int i;
+ unsigned len;
+
+ *domain_p = check_typedef (*domain_p);
+ domain = *domain_p;
+ len = TYPE_NFIELDS (domain);
+
+ for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
+ {
+ LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
+
+ QUIT;
+ if (offset == bitpos)
+ {
+ *fieldno = i;
+ return;
+ }
+ }
+
+ for (i = 0; i < TYPE_N_BASECLASSES (domain); i++)
+ {
+ LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
+ LONGEST bitsize = 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (domain, i));
+
+ if (offset >= bitpos && offset < bitpos + bitsize)
+ {
+ *domain_p = TYPE_FIELD_TYPE (domain, i);
+ cp_find_class_member (domain_p, fieldno, offset - bitpos);
+ return;
+ }
+ }
+ *domain_p = NULL;
+}
+
+void
+cp_print_class_member (const gdb_byte *valaddr, struct type *domain,
+ struct ui_file *stream, char *prefix)
+{
/* VAL is a byte offset into the structure type DOMAIN.
Find the name of the field for that offset and
print it. */
- int extra = 0;
- int bits = 0;
- register unsigned int i;
- unsigned len = TYPE_NFIELDS (domain);
-
- /* @@ Make VAL into bit offset */
+ unsigned int fieldno;
- /* Note: HP aCC generates offsets that are the real byte offsets added
- to a constant bias 0x20000000 (1 << 29). This constant bias gets
- shifted out in the code below -- joyous happenstance! */
+ LONGEST val = unpack_long (builtin_type_long, valaddr);
- /* Note: HP cfront uses a constant bias of 1; if we support this
- compiler ever, we will have to adjust the computation below */
+ /* 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
+ member, either the value is biased or the NULL value has a
+ special representation; both are permitted by ISO C++. HP aCC
+ used a bias of 0x20000000; HP cfront used a bias of 1; g++ 3.x
+ and other compilers which use the Itanium ABI use -1 as the NULL
+ value. GDB only supports that last form; to add support for
+ another form, make this into a cp-abi hook. */
- LONGEST val = unpack_long (builtin_type_int, valaddr) << 3;
- for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
+ if (val == -1)
{
- int bitpos = TYPE_FIELD_BITPOS (domain, i);
- QUIT;
- if (val == bitpos)
- break;
- if (val < bitpos && i != 0)
- {
- /* Somehow pointing into a field. */
- i -= 1;
- extra = (val - TYPE_FIELD_BITPOS (domain, i));
- if (extra & 0x7)
- bits = 1;
- else
- extra >>= 3;
- break;
- }
+ fprintf_filtered (stream, "NULL");
+ return;
}
- if (i < len)
+
+ cp_find_class_member (&domain, &fieldno, val << 3);
+
+ if (domain != NULL)
{
char *name;
- fprintf_filtered (stream, prefix);
+ fputs_filtered (prefix, stream);
name = type_name_no_tag (domain);
if (name)
fputs_filtered (name, stream);
else
c_type_print_base (domain, stream, 0, 0);
fprintf_filtered (stream, "::");
- fputs_filtered (TYPE_FIELD_NAME (domain, i), stream);
- if (extra)
- fprintf_filtered (stream, " + %d bytes", extra);
- if (bits)
- fprintf_filtered (stream, " (offset in bits)");
+ fputs_filtered (TYPE_FIELD_NAME (domain, fieldno), stream);
}
else
- fprintf_filtered (stream, "%ld", (long) (val >> 3));
+ fprintf_filtered (stream, "%ld", (long) val);
}
/* Get the address of the vfunction entry */
struct value *vf = value_copy (v);
- if (VALUE_LAZY (vf))
+ if (value_lazy (vf))
(void) value_fetch_lazy (vf);
/* adjust by offset */
- vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx);
+ /* NOTE: cagney/2005-01-02: THIS IS BOGUS. */
+ value_contents_writeable (vf)[0] += 4 * (HP_ACC_VFUNC_START + vx);
vf = value_ind (vf); /* get the entry */
- VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */
+ /* make it a pointer */
+ deprecated_set_value_type (vf, value_type (v));
/* print out the entry */
- val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0,
- stream, format, 0, recurse + 1, pretty);
+ common_val_print (vf, stream, format, 0, recurse + 1, pretty);
field_physname
= TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi);
/* pai: (temp) FIXME Maybe this should be DMGL_ANSI */
vf_name = cplus_demangle (field_physname, DMGL_ARM);
fprintf_filtered (stream, " %s", vf_name);
+ xfree (vf_name);
if (--(*vfuncs) > 0)
fputs_filtered (", ", stream);
}
void
_initialize_cp_valprint (void)
{
- add_show_from_set
- (add_set_cmd ("static-members", class_support, var_boolean,
- (char *) &static_field_print,
- "Set printing of C++ static members.",
- &setprintlist),
- &showprintlist);
+ add_setshow_boolean_cmd ("static-members", class_support,
+ &static_field_print, _("\
+Set printing of C++ static members."), _("\
+Show printing of C++ static members."), NULL,
+ NULL,
+ show_static_field_print,
+ &setprintlist, &showprintlist);
/* Turn on printing of static fields. */
static_field_print = 1;
- add_show_from_set
- (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint,
- "Set printing of C++ virtual function tables.",
- &setprintlist),
- &showprintlist);
-
- add_show_from_set
- (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint,
- "Set printing of object's derived type based on vtable info.",
- &setprintlist),
- &showprintlist);
+ add_setshow_boolean_cmd ("vtbl", class_support, &vtblprint, _("\
+Set printing of C++ virtual function tables."), _("\
+Show printing of C++ virtual function tables."), NULL,
+ NULL,
+ show_vtblprint,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("object", class_support, &objectprint, _("\
+Set printing of object's derived type based on vtable info."), _("\
+Show printing of object's derived type based on vtable info."), NULL,
+ NULL,
+ show_objectprint,
+ &setprintlist, &showprintlist);
/* Give people the defaults which they are used to. */
objectprint = 0;
projects / deliverable / binutils-gdb.git / blobdiff