/* Support routines for decoding "stabs" debugging information format.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
Free Software Foundation, Inc.
This file is part of GDB.
struct complaint reg_value_complaint =
{"register number too large in symbol %s", 0, 0};
+struct complaint vtbl_notfound_complaint =
+ {"virtual function table pointer not found when defining class `%s'", 0, 0};
+
+struct complaint unrecognized_cplus_name_complaint =
+ {"Unknown C++ symbol name `%s'", 0, 0};
+
struct complaint stabs_general_complaint =
{"%s", 0, 0};
goto normal;
default:
- abort ();
+ complain (unrecognized_cplus_name_complaint, string);
+ goto normal; /* Do *something* with it */
}
}
else
if (**pp != ':')
{
/* Invalid symtab info for member function. */
- return (0);
+ return 0;
}
}
else
new_sublist -> fn_field.fcontext = look_ahead_type;
if (**pp != ';')
{
- return (0);
+ return 0;
}
else
{
TYPE_NFN_FIELDS_TOTAL (type) = total_length;
}
- return (1);
+ return 1;
}
/* Special GNU C++ name.
register char *p;
const char *prefix;
char *name;
+ char cpp_abbrev;
struct type *context;
p = *pp;
if (*++p == 'v')
{
name = NULL;
- switch (*++p)
- {
- case 'f':
- prefix = vptr_name;
- break;
- case 'b':
- prefix = vb_name;
- break;
- default:
- complain (&invalid_cpp_abbrev_complaint, *pp);
- prefix = "INVALID_C++_ABBREV";
- break;
- }
+ cpp_abbrev = *++p;
+
*pp = p + 1;
/* At this point, *pp points to something like "22:23=*22...",
type, find it's name, and construct the field name. */
context = read_type (pp, objfile);
- name = type_name_no_tag (context);
- if (name == NULL)
+
+ switch (cpp_abbrev)
{
- complain (&invalid_cpp_type_complaint, symnum);
- name = "FOO";
+ case 'f': /* $vf -- a virtual function table pointer */
+ fip->list->field.name =
+ obconcat (&objfile->type_obstack, vptr_name, "", "");
+ break;
+
+ case 'b': /* $vb -- a virtual bsomethingorother */
+ name = type_name_no_tag (context);
+ if (name == NULL)
+ {
+ complain (&invalid_cpp_type_complaint, symnum);
+ name = "FOO";
+ }
+ fip->list->field.name =
+ obconcat (&objfile->type_obstack, vb_name, name, "");
+ break;
+
+ default:
+ complain (&invalid_cpp_abbrev_complaint, *pp);
+ fip->list->field.name =
+ obconcat (&objfile->type_obstack,
+ "INVALID_CPLUSPLUS_ABBREV", "", "");
+ break;
}
- fip -> list -> field.name =
- obconcat (&objfile -> type_obstack, prefix, name, "");
/* At this point, *pp points to the ':'. Skip it and read the
field type. */
{
complain (&invalid_cpp_abbrev_complaint, *pp);
}
- fip -> list -> field.type = read_type (pp, objfile);
+ fip->list->field.type = read_type (pp, objfile);
(*pp)++; /* Skip the comma. */
- fip -> list -> field.bitpos = read_number (pp, ';');
+ fip->list->field.bitpos = read_number (pp, ';');
/* This field is unpacked. */
- fip -> list -> field.bitsize = 0;
- fip -> list -> visibility = VISIBILITY_PRIVATE;
+ fip->list->field.bitsize = 0;
+ fip->list->visibility = VISIBILITY_PRIVATE;
}
else if (*p == '_')
{
partially constructed entry which we now scrub. */
fip -> list = fip -> list -> next;
}
- return (1);
+ return 1;
}
/* The stabs for C++ derived classes contain baseclass information which
if (**pp != '!')
{
- return (1);
+ return 1;
}
else
{
break;
default:
/* Bad visibility format. */
- return (0);
+ return 0;
}
new -> visibility = *(*pp)++;
break;
default:
/* Bad visibility format. */
- return (0);
+ return 0;
}
/* The remaining value is the bit offset of the portion of the object
/* skip trailing ';' and bump count of number of fields seen */
(*pp)++;
}
- return (1);
+ return 1;
}
+/* The tail end of stabs for C++ classes that contain a virtual function
+ pointer contains a tilde, a %, and a type number.
+ The type number refers to the base class (possibly this class itself) which
+ contains the vtable pointer for the current class.
+
+ This function is called when we have parsed all the method declarations,
+ so we can look for the vptr base class info. */
+
static int
read_tilde_fields (fip, pp, type, objfile)
struct field_info *fip;
/* Read either a '%' or the final ';'. */
if (*(*pp)++ == '%')
{
- /* We'd like to be able to derive the vtable pointer field
- from the type information, but when it's inherited, that's
- hard. A reason it's hard is because we may read in the
- info about a derived class before we read in info about
- the base class that provides the vtable pointer field.
- Once the base info has been read, we could fill in the info
- for the derived classes, but for the fact that by then,
- we don't remember who needs what. */
-
-#if 0
- int predicted_fieldno = -1;
-#endif
-
- /* Now we must record the virtual function table pointer's
- field information. */
+ /* The next number is the type number of the base class
+ (possibly our own class) which supplies the vtable for
+ this class. Parse it out, and search that class to find
+ its vtable pointer, and install those into TYPE_VPTR_BASETYPE
+ and TYPE_VPTR_FIELDNO. */
struct type *t;
int i;
-#if 0
- {
- /* In version 2, we derive the vfield ourselves. */
- for (n = 0; n < TYPE_NFIELDS (type); n++)
- {
- if (! strncmp (TYPE_FIELD_NAME (type, n), vptr_name,
- sizeof (vptr_name) - 1))
- {
- predicted_fieldno = n;
- break;
- }
- }
- if (predicted_fieldno < 0)
- {
- for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
- {
- if (! TYPE_FIELD_VIRTUAL (type, n)
- && TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n)) >= 0)
- {
- predicted_fieldno =
- TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n));
- break;
- }
- }
- }
- }
-#endif
-
t = read_type (pp, objfile);
p = (*pp)++;
while (*p != '\0' && *p != ';')
if (*p == '\0')
{
/* Premature end of symbol. */
- return (0);
+ return 0;
}
TYPE_VPTR_BASETYPE (type) = t;
- if (type == t)
+ if (type == t) /* Our own class provides vtbl ptr */
{
- if (TYPE_FIELD_NAME (t, TYPE_N_BASECLASSES (t)) == 0)
+ for (i = TYPE_NFIELDS (t) - 1;
+ i >= TYPE_N_BASECLASSES (t);
+ --i)
{
- /* FIXME-tiemann: what's this? */
-#if 0
- TYPE_VPTR_FIELDNO (type) = i = TYPE_N_BASECLASSES (t);
-#else
- error_type (pp);
-#endif
- }
- else
- {
- for (i = TYPE_NFIELDS (t) - 1;
- i >= TYPE_N_BASECLASSES (t);
- --i)
+ if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name,
+ sizeof (vptr_name) - 1))
{
- if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name,
- sizeof (vptr_name) - 1))
- {
- TYPE_VPTR_FIELDNO (type) = i;
- break;
- }
+ TYPE_VPTR_FIELDNO (type) = i;
+ goto gotit;
}
}
- if (i < 0)
- {
- /* Virtual function table field not found. */
- return (0);
- }
+ /* Virtual function table field not found. */
+ complain (vtbl_notfound_complaint, TYPE_NAME (type));
+ return 0;
}
else
{
TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
}
-#if 0
- if (TYPE_VPTR_FIELDNO (type) != predicted_fieldno)
- {
- error ("TYPE_VPTR_FIELDNO miscalculated");
- }
-#endif
-
+ gotit:
*pp = p + 1;
}
}
- return (1);
+ return 1;
}
static int
if (TYPE_CODE (TYPE_BASECLASS (type, n)) == TYPE_CODE_UNDEF)
{
/* @@ Memory leak on objfile -> type_obstack? */
- return (0);
+ return 0;
}
TYPE_NFN_FIELDS_TOTAL (type) +=
TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, n));
--n; /* Circumvent Sun3 compiler bug */
TYPE_FN_FIELDLISTS (type)[n] = fip -> fnlist -> fn_fieldlist;
}
- return (1);
+ return 1;
}
/* Create the vector of fields, and record how big it is.
}
fip -> list = fip -> list -> next;
}
- return (1);
+ return 1;
}
/* Read the description of a structure (or union type) and return an object
projects / thirdparty / binutils-gdb.git / commitdiff
