5579919f7d
dependencies. * scm-lang.c (gdb_string.h): Include. * objfiles.c (add_to_objfile_sections): Cast second arg of obstack_grow call to correct type (char *). * cp-valprint.c (cp_print_static_field): Ditto. * somsolib.c (som_solib_create_inferior_hook): Add a declaration for external find_unwind_entry function (from hppa-tdep.c). * remote-pa.c (remote_write_bytes, remote_read_bytes): Change type of second arg to "char *" to be type compatible with dcache. (remote_wait): Cast second arg to strtol to correct type. * hppa-tdep.c (compare_unwind_entries): Change argument types to "const void *" to be type compatible with qsort, and then assign to local args prior to use.
600 lines
17 KiB
C
600 lines
17 KiB
C
/* Support for printing C++ values for GDB, the GNU debugger.
|
|
Copyright 1986, 1988, 1989, 1991, 1994, 1995, 1996
|
|
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
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
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. */
|
|
|
|
#include "defs.h"
|
|
#include "obstack.h"
|
|
#include "symtab.h"
|
|
#include "gdbtypes.h"
|
|
#include "expression.h"
|
|
#include "value.h"
|
|
#include "command.h"
|
|
#include "gdbcmd.h"
|
|
#include "demangle.h"
|
|
#include "annotate.h"
|
|
#include "gdb_string.h"
|
|
#include "c-lang.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. */
|
|
|
|
static struct obstack dont_print_vb_obstack;
|
|
static struct obstack dont_print_statmem_obstack;
|
|
|
|
static void
|
|
cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int,
|
|
enum val_prettyprint));
|
|
|
|
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)
|
|
char *valaddr;
|
|
struct type *type;
|
|
GDB_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)
|
|
{
|
|
kind = "virtual ";
|
|
goto common;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sym = find_pc_function (addr);
|
|
if (sym == 0)
|
|
{
|
|
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)
|
|
{
|
|
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] == '_'
|
|
&& is_cplus_marker (TYPE_FN_FIELD_PHYSNAME (f, j)[1]))
|
|
{
|
|
cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
|
|
TYPE_FN_FIELDLIST_NAME (domain, i),
|
|
0, stream);
|
|
}
|
|
else
|
|
{
|
|
cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "",
|
|
TYPE_FN_FIELDLIST_NAME (domain, i),
|
|
0, stream);
|
|
}
|
|
}
|
|
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. */
|
|
const char vtbl_ptr_name[] =
|
|
{ '_','_','v','t','b','l','_','p','t','r','_','t','y','p','e', 0 };
|
|
|
|
/* Return truth value for assertion that TYPE is of the type
|
|
"pointer to virtual function". */
|
|
|
|
int
|
|
cp_is_vtbl_ptr_type(type)
|
|
struct type *type;
|
|
{
|
|
char *typename = type_name_no_tag (type);
|
|
|
|
return (typename != NULL
|
|
&& (STREQ (typename, vtbl_ptr_name)
|
|
|| STREQ (typename, vtbl_ptr_name_old)));
|
|
}
|
|
|
|
/* Return truth value for the assertion that TYPE is of the type
|
|
"pointer to virtual function table". */
|
|
|
|
int
|
|
cp_is_vtbl_member(type)
|
|
struct type *type;
|
|
{
|
|
if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
|
{
|
|
type = TYPE_TARGET_TYPE (type);
|
|
if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
|
|
{
|
|
type = TYPE_TARGET_TYPE (type);
|
|
if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
|
|
|| TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
|
|
{
|
|
/* Virtual functions tables are full of pointers
|
|
to virtual functions. */
|
|
return cp_is_vtbl_ptr_type (type);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* 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, 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_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_TYPEDEF (type);
|
|
|
|
fprintf_filtered (stream, "{");
|
|
len = TYPE_NFIELDS (type);
|
|
n_baseclasses = TYPE_N_BASECLASSES (type);
|
|
|
|
/* Print out baseclasses such that we don't print
|
|
duplicates of virtual baseclasses. */
|
|
if (n_baseclasses > 0)
|
|
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>");
|
|
else
|
|
{
|
|
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. */
|
|
if (!static_field_print && TYPE_FIELD_STATIC (type, i))
|
|
continue;
|
|
if (fields_seen)
|
|
fprintf_filtered (stream, ", ");
|
|
else if (n_baseclasses > 0)
|
|
{
|
|
if (pretty)
|
|
{
|
|
fprintf_filtered (stream, "\n");
|
|
print_spaces_filtered (2 + 2 * recurse, stream);
|
|
fputs_filtered ("members of ", stream);
|
|
fputs_filtered (type_name_no_tag (type), stream);
|
|
fputs_filtered (": ", stream);
|
|
}
|
|
}
|
|
fields_seen = 1;
|
|
|
|
if (pretty)
|
|
{
|
|
fprintf_filtered (stream, "\n");
|
|
print_spaces_filtered (2 + 2 * recurse, stream);
|
|
}
|
|
else
|
|
{
|
|
wrap_here (n_spaces (2 + 2 * recurse));
|
|
}
|
|
if (inspect_it)
|
|
{
|
|
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
|
fputs_filtered ("\"( ptr \"", stream);
|
|
else
|
|
fputs_filtered ("\"( nodef \"", stream);
|
|
if (TYPE_FIELD_STATIC (type, i))
|
|
fputs_filtered ("static ", stream);
|
|
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
|
language_cplus,
|
|
DMGL_PARAMS | DMGL_ANSI);
|
|
fputs_filtered ("\" \"", stream);
|
|
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
|
language_cplus,
|
|
DMGL_PARAMS | DMGL_ANSI);
|
|
fputs_filtered ("\") \"", stream);
|
|
}
|
|
else
|
|
{
|
|
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
|
|
|
if (TYPE_FIELD_STATIC (type, i))
|
|
fputs_filtered ("static ", stream);
|
|
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
|
language_cplus,
|
|
DMGL_PARAMS | DMGL_ANSI);
|
|
annotate_field_name_end ();
|
|
fputs_filtered (" = ", stream);
|
|
annotate_field_value ();
|
|
}
|
|
|
|
if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
|
|
{
|
|
value_ptr v;
|
|
|
|
/* Bitfields require special handling, especially due to byte
|
|
order problems. */
|
|
if (TYPE_FIELD_IGNORE (type, i))
|
|
{
|
|
fputs_filtered ("<optimized out or zero length>", stream);
|
|
}
|
|
else
|
|
{
|
|
v = value_from_longest (TYPE_FIELD_TYPE (type, i),
|
|
unpack_field_as_long (type, valaddr, i));
|
|
|
|
val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0,
|
|
stream, format, 0, recurse + 1, pretty);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (TYPE_FIELD_IGNORE (type, i))
|
|
{
|
|
fputs_filtered ("<optimized out or zero length>", stream);
|
|
}
|
|
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)
|
|
fputs_filtered ("<optimized out>", stream);
|
|
else
|
|
{
|
|
v = value_at (TYPE_FIELD_TYPE (type, i),
|
|
(CORE_ADDR)SYMBOL_BLOCK_VALUE (sym));
|
|
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);
|
|
}
|
|
}
|
|
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");
|
|
print_spaces_filtered (2 * recurse, stream);
|
|
}
|
|
}
|
|
fprintf_filtered (stream, "}");
|
|
}
|
|
|
|
/* Special val_print routine to avoid printing multiple copies of virtual
|
|
baseclasses. */
|
|
|
|
static void
|
|
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_vb;
|
|
{
|
|
struct obstack tmp_obstack;
|
|
struct type **last_dont_print
|
|
= (struct type **)obstack_next_free (&dont_print_vb_obstack);
|
|
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
|
|
|
|
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_vb_obstack;
|
|
/* Bump up the high-water mark. Now alpha is omega. */
|
|
obstack_finish (&dont_print_vb_obstack);
|
|
}
|
|
|
|
for (i = 0; i < n_baseclasses; i++)
|
|
{
|
|
int boffset;
|
|
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
|
char *basename = TYPE_NAME (baseclass);
|
|
|
|
if (BASETYPE_VIA_VIRTUAL (type, i))
|
|
{
|
|
struct type **first_dont_print
|
|
= (struct type **)obstack_base (&dont_print_vb_obstack);
|
|
|
|
int j = (struct type **)obstack_next_free (&dont_print_vb_obstack)
|
|
- first_dont_print;
|
|
|
|
while (--j >= 0)
|
|
if (baseclass == first_dont_print[j])
|
|
goto flush_it;
|
|
|
|
obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
|
|
}
|
|
|
|
boffset = baseclass_offset (type, i , valaddr, address);
|
|
|
|
if (pretty)
|
|
{
|
|
fprintf_filtered (stream, "\n");
|
|
print_spaces_filtered (2 * recurse, stream);
|
|
}
|
|
fputs_filtered ("<", stream);
|
|
/* Not sure what the best notation is in the case where there is no
|
|
baseclass name. */
|
|
fputs_filtered (basename ? basename : "", stream);
|
|
fputs_filtered ("> = ", stream);
|
|
if (boffset == -1)
|
|
fprintf_filtered (stream, "<invalid address>");
|
|
else
|
|
cp_print_value_fields (baseclass, valaddr + boffset, address + boffset,
|
|
stream, format, recurse, pretty,
|
|
(struct type **) obstack_base (&dont_print_vb_obstack),
|
|
0);
|
|
fputs_filtered (", ", stream);
|
|
|
|
flush_it:
|
|
;
|
|
}
|
|
|
|
if (dont_print_vb == 0)
|
|
{
|
|
/* Free the space used to deal with the printing
|
|
of this type from top level. */
|
|
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_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
|
|
cp_print_class_member (valaddr, domain, stream, prefix)
|
|
char *valaddr;
|
|
struct type *domain;
|
|
GDB_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 */
|
|
LONGEST val = unpack_long (builtin_type_int, valaddr) << 3;
|
|
for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
if (i < len)
|
|
{
|
|
char *name;
|
|
fprintf_filtered (stream, prefix);
|
|
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)");
|
|
}
|
|
else
|
|
fprintf_filtered (stream, "%d", val >> 3);
|
|
}
|
|
|
|
void
|
|
_initialize_cp_valprint ()
|
|
{
|
|
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);
|
|
/* 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);
|
|
|
|
/* Give people the defaults which they are used to. */
|
|
objectprint = 0;
|
|
vtblprint = 0;
|
|
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);
|
|
}
|