/* Support routines for decoding "stabs" debugging information format.
- Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "gdb_string.h"
#include "bfd.h"
-#include "obstack.h"
+#include "gdb_obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "complaints.h"
#include "demangle.h"
#include "language.h"
+#include "doublest.h"
+#include "cp-abi.h"
+#include "cp-support.h"
#include <ctype.h>
attach_fields_to_type (struct field_info *, struct type *, struct objfile *);
static struct type *read_struct_type (char **, struct type *,
+ enum type_code,
struct objfile *);
static struct type *read_array_type (char **, struct type *,
struct objfile *);
-static struct type **read_args (char **, int, struct objfile *);
+static struct field *read_args (char **, int, struct objfile *, int *, int *);
static int
read_cpp_abbrev (struct field_info *, char **, struct type *,
{"const/volatile indicator missing, got '%c'", 0, 0};
static struct complaint error_type_complaint =
-{"debug info mismatch between compiler and debugger", 0, 0};
+{"couldn't parse type; debugger out of date?", 0, 0};
static struct complaint invalid_member_complaint =
{"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
*(pp) = next_symbol_text (objfile); \
} while (0)
\f
-/* FIXME: These probably should be our own types (like rs6000_builtin_type
- has its own types) rather than builtin_type_*. */
-static struct type **os9k_type_vector[] =
-{
- 0,
- &builtin_type_int,
- &builtin_type_char,
- &builtin_type_long,
- &builtin_type_short,
- &builtin_type_unsigned_char,
- &builtin_type_unsigned_short,
- &builtin_type_unsigned_long,
- &builtin_type_unsigned_int,
- &builtin_type_float,
- &builtin_type_double,
- &builtin_type_void,
- &builtin_type_long_double
-};
-
-static void os9k_init_type_vector (struct type **);
-
-static void
-os9k_init_type_vector (struct type **tv)
-{
- unsigned int i;
- for (i = 0; i < sizeof (os9k_type_vector) / sizeof (struct type **); i++)
- tv[i] = (os9k_type_vector[i] == 0 ? 0 : *(os9k_type_vector[i]));
-}
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE /* FIXME: These probably should be our own types (like rs6000_builtin_type
+// OBSOLETE has its own types) rather than builtin_type_*. */
+// OBSOLETE static struct type **os9k_type_vector[] =
+// OBSOLETE {
+// OBSOLETE 0,
+// OBSOLETE &builtin_type_int,
+// OBSOLETE &builtin_type_char,
+// OBSOLETE &builtin_type_long,
+// OBSOLETE &builtin_type_short,
+// OBSOLETE &builtin_type_unsigned_char,
+// OBSOLETE &builtin_type_unsigned_short,
+// OBSOLETE &builtin_type_unsigned_long,
+// OBSOLETE &builtin_type_unsigned_int,
+// OBSOLETE &builtin_type_float,
+// OBSOLETE &builtin_type_double,
+// OBSOLETE &builtin_type_void,
+// OBSOLETE &builtin_type_long_double
+// OBSOLETE };
+// OBSOLETE
+// OBSOLETE static void os9k_init_type_vector (struct type **);
+// OBSOLETE
+// OBSOLETE static void
+// OBSOLETE os9k_init_type_vector (struct type **tv)
+// OBSOLETE {
+// OBSOLETE unsigned int i;
+// OBSOLETE for (i = 0; i < sizeof (os9k_type_vector) / sizeof (struct type **); i++)
+// OBSOLETE tv[i] = (os9k_type_vector[i] == 0 ? 0 : *(os9k_type_vector[i]));
+// OBSOLETE }
+#endif /* OBSOLETE OS9K */
/* Look up a dbx type-number pair. Return the address of the slot
where the type for that number-pair is stored.
or for associating a new type with the pair. */
struct type **
-dbx_lookup_type (typenums)
- int typenums[2];
+dbx_lookup_type (int typenums[2])
{
register int filenum = typenums[0];
register int index = typenums[1];
memset (&type_vector[old_len], 0,
(type_vector_length - old_len) * sizeof (struct type *));
- if (os9k_stabs)
- /* Deal with OS9000 fundamental types. */
- os9k_init_type_vector (type_vector);
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE /* Deal with OS9000 fundamental types. */
+// OBSOLETE os9k_init_type_vector (type_vector);
+#endif /* OBSOLETE OS9K */
}
return (&type_vector[index]);
}
put into the type vector, and so may not be referred to by number. */
static struct type *
-dbx_alloc_type (typenums, objfile)
- int typenums[2];
- struct objfile *objfile;
+dbx_alloc_type (int typenums[2], struct objfile *objfile)
{
register struct type **type_addr;
for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
{
new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new);
+ make_cleanup (xfree, new);
memset (new, 0, sizeof (struct nextfield));
new->next = fip->list;
fip->list = new;
new_fnlist = (struct next_fnfieldlist *)
xmalloc (sizeof (struct next_fnfieldlist));
- make_cleanup (free, new_fnlist);
+ make_cleanup (xfree, new_fnlist);
memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
/* The following is code to work around cfront generated stabs.
new_sublist =
(struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
- make_cleanup (free, new_sublist);
+ make_cleanup (xfree, new_sublist);
memset (new_sublist, 0, sizeof (struct next_fnfield));
/* eat 1; from :;2A.; */
TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD;
/* If this is just a stub, then we don't have the real name here. */
- if (TYPE_FLAGS (new_sublist->fn_field.type) & TYPE_FLAG_STUB)
+ if (TYPE_STUB (new_sublist->fn_field.type))
{
if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
dbl_valu = (char *)
obstack_alloc (&objfile->symbol_obstack,
TYPE_LENGTH (SYMBOL_TYPE (sym)));
- store_floating (dbl_valu, TYPE_LENGTH (SYMBOL_TYPE (sym)), d);
+ store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
SYMBOL_VALUE_BYTES (sym) = dbl_valu;
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
}
FIXME: Do we need a new builtin_type_promoted_int_arg ? */
if (TYPE_CODE (ptype) == TYPE_CODE_VOID)
ptype = builtin_type_int;
- TYPE_FIELD_TYPE (ftype, nparams++) = ptype;
+ TYPE_FIELD_TYPE (ftype, nparams) = ptype;
+ TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
}
TYPE_NFIELDS (ftype) = nparams;
TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
add_symbol_to_list (sym, &local_symbols);
- if (TARGET_BYTE_ORDER != BIG_ENDIAN)
+ if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
{
/* On little-endian machines, this crud is never necessary,
and, if the extra bytes contain garbage, is harmful. */
SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_REGPARM;
SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
- if (SYMBOL_VALUE (sym) >= NUM_REGS)
+ if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
{
- complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS,
+ complain (®_value_complaint, SYMBOL_VALUE (sym),
+ NUM_REGS + NUM_PSEUDO_REGS,
SYMBOL_SOURCE_NAME (sym));
SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
}
SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_REGISTER;
SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
- if (SYMBOL_VALUE (sym) >= NUM_REGS)
+ if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
{
- complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS,
+ complain (®_value_complaint, SYMBOL_VALUE (sym),
+ NUM_REGS + NUM_PSEUDO_REGS,
SYMBOL_SOURCE_NAME (sym));
SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
}
break;
case 't':
+ /* Typedef */
SYMBOL_TYPE (sym) = read_type (&p, objfile);
/* For a nameless type, we don't want a create a symbol, thus we
Fortunately, this check seems not to be necessary
for anything except pointers or functions. */
+ /* ezannoni: 2000-10-26. This seems to apply for
+ versions of gcc older than 2.8. This was the original
+ problem: with the following code gdb would tell that
+ the type for name1 is caddr_t, and func is char()
+ typedef char *caddr_t;
+ char *name2;
+ struct x
+ {
+ char *name1;
+ } xx;
+ char *func()
+ {
+ }
+ main () {}
+ */
+
+ /* Pascal accepts names for pointer types. */
+ if (current_subfile->language == language_pascal)
+ {
+ TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym);
+ }
}
else
TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym);
}
#endif
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- if (os9k_stabs)
- add_symbol_to_list (sym, &global_symbols);
- else
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE add_symbol_to_list (sym, &global_symbols);
+// OBSOLETE else
+#endif /* OBSOLETE OS9K */
add_symbol_to_list (sym, &local_symbols);
break;
SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
- if (SYMBOL_VALUE (sym) >= NUM_REGS)
+ if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
{
- complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS,
+ complain (®_value_complaint, SYMBOL_VALUE (sym),
+ NUM_REGS + NUM_PSEUDO_REGS,
SYMBOL_SOURCE_NAME (sym));
SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
}
/* Used to distinguish string and bitstring from char-array and set. */
int is_string = 0;
+ /* Used to distinguish vector from array. */
+ int is_vector = 0;
+
/* Read type number if present. The type number may be omitted.
for instance in a two-dimensional array declared with type
"ar1;1;10;ar1;1;10;4". */
}
else if (type_size >= 0 || is_string)
{
- *type = *xtype;
+ /* This is the absolute wrong way to construct types. Every
+ other debug format has found a way around this problem and
+ the related problems with unnecessarily stubbed types;
+ someone motivated should attempt to clean up the issue
+ here as well. Once a type pointed to has been created it
+ should not be modified.
+
+ Well, it's not *absolutely* wrong. Constructing recursive
+ types (trees, linked lists) necessarily entails modifying
+ types after creating them. Constructing any loop structure
+ entails side effects. The Dwarf 2 reader does handle this
+ more gracefully (it never constructs more than once
+ instance of a type object, so it doesn't have to copy type
+ objects wholesale), but it still mutates type objects after
+ other folks have references to them.
+
+ Keep in mind that this circularity/mutation issue shows up
+ at the source language level, too: C's "incomplete types",
+ for example. So the proper cleanup, I think, would be to
+ limit GDB's type smashing to match exactly those required
+ by the source language. So GDB could have a
+ "complete_this_type" function, but never create unnecessary
+ copies of a type otherwise. */
+ replace_type (type, xtype);
TYPE_NAME (type) = NULL;
TYPE_TAG_NAME (type) = NULL;
}
forward-referenced), and we must change it to a pointer, function,
reference, or whatever, *in-place*. */
- case '*':
+ case '*': /* Pointer to another type */
type1 = read_type (pp, objfile);
type = make_pointer_type (type1, dbx_lookup_type (typenums));
break;
break;
case 'f': /* Function returning another type */
- if (os9k_stabs && **pp == '(')
- {
- /* Function prototype; parse it.
- We must conditionalize this on os9k_stabs because otherwise
- it could be confused with a Sun-style (1,3) typenumber
- (I think). */
- struct type *t;
- ++*pp;
- while (**pp != ')')
- {
- t = read_type (pp, objfile);
- if (**pp == ',')
- ++ * pp;
- }
- }
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs && **pp == '(')
+// OBSOLETE {
+// OBSOLETE /* Function prototype; parse it.
+// OBSOLETE We must conditionalize this on os9k_stabs because otherwise
+// OBSOLETE it could be confused with a Sun-style (1,3) typenumber
+// OBSOLETE (I think). */
+// OBSOLETE struct type *t;
+// OBSOLETE ++*pp;
+// OBSOLETE while (**pp != ')')
+// OBSOLETE {
+// OBSOLETE t = read_type (pp, objfile);
+// OBSOLETE if (**pp == ',')
+// OBSOLETE ++ * pp;
+// OBSOLETE }
+// OBSOLETE }
+#endif /* OBSOLETE OS9K */
+
type1 = read_type (pp, objfile);
type = make_function_type (type1, dbx_lookup_type (typenums));
break;
+ case 'g': /* Prototyped function. (Sun) */
+ {
+ /* Unresolved questions:
+
+ - According to Sun's ``STABS Interface Manual'', for 'f'
+ and 'F' symbol descriptors, a `0' in the argument type list
+ indicates a varargs function. But it doesn't say how 'g'
+ type descriptors represent that info. Someone with access
+ to Sun's toolchain should try it out.
+
+ - According to the comment in define_symbol (search for
+ `process_prototype_types:'), Sun emits integer arguments as
+ types which ref themselves --- like `void' types. Do we
+ have to deal with that here, too? Again, someone with
+ access to Sun's toolchain should try it out and let us
+ know. */
+
+ const char *type_start = (*pp) - 1;
+ struct type *return_type = read_type (pp, objfile);
+ struct type *func_type
+ = make_function_type (return_type, dbx_lookup_type (typenums));
+ struct type_list {
+ struct type *type;
+ struct type_list *next;
+ } *arg_types = 0;
+ int num_args = 0;
+
+ while (**pp && **pp != '#')
+ {
+ struct type *arg_type = read_type (pp, objfile);
+ struct type_list *new = alloca (sizeof (*new));
+ new->type = arg_type;
+ new->next = arg_types;
+ arg_types = new;
+ num_args++;
+ }
+ if (**pp == '#')
+ ++*pp;
+ else
+ {
+ static struct complaint msg = {
+ "Prototyped function type didn't end arguments with `#':\n%s",
+ 0, 0
+ };
+ complain (&msg, type_start);
+ }
+
+ /* If there is just one argument whose type is `void', then
+ that's just an empty argument list. */
+ if (arg_types
+ && ! arg_types->next
+ && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID)
+ num_args = 0;
+
+ TYPE_FIELDS (func_type)
+ = (struct field *) TYPE_ALLOC (func_type,
+ num_args * sizeof (struct field));
+ memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
+ {
+ int i;
+ struct type_list *t;
+
+ /* We stuck each argument type onto the front of the list
+ when we read it, so the list is reversed. Build the
+ fields array right-to-left. */
+ for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
+ TYPE_FIELD_TYPE (func_type, i) = t->type;
+ }
+ TYPE_NFIELDS (func_type) = num_args;
+ TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED;
+
+ type = func_type;
+ break;
+ }
+
case 'k': /* Const qualifier on some type (Sun) */
- case 'c': /* Const qualifier on some type (OS9000) */
- /* Because 'c' means other things to AIX and 'k' is perfectly good,
- only accept 'c' in the os9k_stabs case. */
- if (type_descriptor == 'c' && !os9k_stabs)
- return error_type (pp, objfile);
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE /* ezannoni 2002-07-16: This can be safely deleted, because 'c'
+// OBSOLETE means complex type in AIX stabs, while it means const qualifier
+// OBSOLETE in os9k stabs. Obviously we were supporting only the os9k meaning.
+// OBSOLETE We were erroring out if we were reading AIX stabs. Right now the
+// OBSOLETE erroring out will happen in the default clause of the switch. */
+// OBSOLETE case 'c': /* Const qualifier on some type (OS9000) */
+// OBSOLETE /* Because 'c' means other things to AIX and 'k' is perfectly good,
+// OBSOLETE only accept 'c' in the os9k_stabs case. */
+// OBSOLETE if (type_descriptor == 'c' && !os9k_stabs)
+// OBSOLETE return error_type (pp, objfile);
+#endif /* OBSOLETE OS9K */
type = read_type (pp, objfile);
- /* FIXME! For now, we ignore const and volatile qualifiers. */
+ type = make_cv_type (1, TYPE_VOLATILE (type), type,
+ dbx_lookup_type (typenums));
break;
case 'B': /* Volatile qual on some type (Sun) */
- case 'i': /* Volatile qual on some type (OS9000) */
- /* Because 'i' means other things to AIX and 'B' is perfectly good,
- only accept 'i' in the os9k_stabs case. */
- if (type_descriptor == 'i' && !os9k_stabs)
- return error_type (pp, objfile);
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE /* ezannoni 2002-07-16: This can be safely deleted, because 'i'
+// OBSOLETE means imported type in AIX stabs, while it means volatile qualifier
+// OBSOLETE in os9k stabs. Obviously we were supporting only the os9k meaning.
+// OBSOLETE We were erroring out if we were reading AIX stabs. Right now the
+// OBSOLETE erroring out will happen in the default clause of the switch. */
+// OBSOLETE case 'i': /* Volatile qual on some type (OS9000) */
+// OBSOLETE /* Because 'i' means other things to AIX and 'B' is perfectly good,
+// OBSOLETE only accept 'i' in the os9k_stabs case. */
+// OBSOLETE if (type_descriptor == 'i' && !os9k_stabs)
+// OBSOLETE return error_type (pp, objfile);
+#endif /* OBSOLETE OS9K */
type = read_type (pp, objfile);
- /* FIXME! For now, we ignore const and volatile qualifiers. */
+ type = make_cv_type (TYPE_CONST (type), 1, type,
+ dbx_lookup_type (typenums));
break;
case '@':
switch (*attr)
{
- case 's':
+ case 's': /* Size attribute */
type_size = atoi (attr + 1);
if (type_size <= 0)
type_size = -1;
break;
- case 'S':
+ case 'S': /* String attribute */
+ /* FIXME: check to see if following type is array? */
is_string = 1;
break;
+ case 'V': /* Vector attribute */
+ /* FIXME: check to see if following type is array? */
+ is_vector = 1;
+ break;
+
default:
/* Ignore unrecognized type attributes, so future compilers
can invent new ones. */
{
struct type *domain = read_type (pp, objfile);
struct type *return_type;
- struct type **args;
+ struct field *args;
+ int nargs, varargs;
if (**pp != ',')
/* Invalid member type data format. */
++(*pp);
return_type = read_type (pp, objfile);
- args = read_args (pp, ';', objfile);
+ args = read_args (pp, ';', objfile, &nargs, &varargs);
type = dbx_alloc_type (typenums, objfile);
- smash_to_method_type (type, domain, return_type, args);
+ smash_to_method_type (type, domain, return_type, args,
+ nargs, varargs);
}
break;
break;
case 'b':
- if (os9k_stabs)
- /* Const and volatile qualified type. */
- type = read_type (pp, objfile);
- else
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE /* Const and volatile qualified type. */
+// OBSOLETE type = read_type (pp, objfile);
+// OBSOLETE else
+#endif /* OBSOLETE OS9K */
{
/* Sun ACC builtin int type */
type = read_sun_builtin_type (pp, typenums, objfile);
case 's': /* Struct type */
case 'u': /* Union type */
- type = dbx_alloc_type (typenums, objfile);
- switch (type_descriptor)
- {
- case 's':
- TYPE_CODE (type) = TYPE_CODE_STRUCT;
- break;
- case 'u':
- TYPE_CODE (type) = TYPE_CODE_UNION;
- break;
- }
- type = read_struct_type (pp, type, objfile);
- break;
+ {
+ enum type_code type_code = TYPE_CODE_UNDEF;
+ type = dbx_alloc_type (typenums, objfile);
+ switch (type_descriptor)
+ {
+ case 's':
+ type_code = TYPE_CODE_STRUCT;
+ break;
+ case 'u':
+ type_code = TYPE_CODE_UNION;
+ break;
+ }
+ type = read_struct_type (pp, type, type_code, objfile);
+ break;
+ }
case 'a': /* Array type */
if (**pp != 'r')
type = read_array_type (pp, type, objfile);
if (is_string)
TYPE_CODE (type) = TYPE_CODE_STRING;
+ if (is_vector)
+ TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
break;
- case 'S':
+ case 'S': /* Set or bitstring type */
type1 = read_type (pp, objfile);
type = create_set_type ((struct type *) NULL, type1);
if (is_string)
case 25:
/* Complex type consisting of two IEEE single precision values. */
rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL);
+ TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float",
+ NULL);
break;
case 26:
/* Complex type consisting of two IEEE double precision values. */
rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL);
+ TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double",
+ NULL);
break;
case 27:
rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL);
\f
/* This page contains subroutines of read_type. */
+/* Replace *OLD_NAME with the method name portion of PHYSNAME. */
+
+static void
+update_method_name_from_physname (char **old_name, char *physname)
+{
+ char *method_name;
+
+ method_name = method_name_from_physname (physname);
+
+ if (method_name == NULL)
+ error ("bad physname %s\n", physname);
+
+ if (strcmp (*old_name, method_name) != 0)
+ {
+ xfree (*old_name);
+ *old_name = method_name;
+ }
+ else
+ xfree (method_name);
+}
+
/* Read member function stabs info for C++ classes. The form of each member
function data is:
new_fnlist = (struct next_fnfieldlist *)
xmalloc (sizeof (struct next_fnfieldlist));
- make_cleanup (free, new_fnlist);
+ make_cleanup (xfree, new_fnlist);
memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
{
new_sublist =
(struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
- make_cleanup (free, new_sublist);
+ make_cleanup (xfree, new_sublist);
memset (new_sublist, 0, sizeof (struct next_fnfield));
/* Check for and handle cretinous dbx symbol name continuation! */
/* If this is just a stub, then we don't have the real name here. */
- if (TYPE_FLAGS (new_sublist->fn_field.type) & TYPE_FLAG_STUB)
+ if (TYPE_STUB (new_sublist->fn_field.type))
{
if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
}
case '?':
/* static member function. */
- new_sublist->fn_field.voffset = VOFFSET_STATIC;
- if (strncmp (new_sublist->fn_field.physname,
- main_fn_name, strlen (main_fn_name)))
- {
- new_sublist->fn_field.is_stub = 1;
- }
- break;
+ {
+ int slen = strlen (main_fn_name);
+
+ new_sublist->fn_field.voffset = VOFFSET_STATIC;
+
+ /* For static member functions, we can't tell if they
+ are stubbed, as they are put out as functions, and not as
+ methods.
+ GCC v2 emits the fully mangled name if
+ dbxout.c:flag_minimal_debug is not set, so we have to
+ detect a fully mangled physname here and set is_stub
+ accordingly. Fully mangled physnames in v2 start with
+ the member function name, followed by two underscores.
+ GCC v3 currently always emits stubbed member functions,
+ but with fully mangled physnames, which start with _Z. */
+ if (!(strncmp (new_sublist->fn_field.physname,
+ main_fn_name, slen) == 0
+ && new_sublist->fn_field.physname[slen] == '_'
+ && new_sublist->fn_field.physname[slen + 1] == '_'))
+ {
+ new_sublist->fn_field.is_stub = 1;
+ }
+ break;
+ }
default:
/* error */
while (**pp != ';' && **pp != '\0');
(*pp)++;
+ STABS_CONTINUE (pp, objfile);
- new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
- obstack_alloc (&objfile->type_obstack,
- sizeof (struct fn_field) * length);
- memset (new_fnlist->fn_fieldlist.fn_fields, 0,
- sizeof (struct fn_field) * length);
- for (i = length; (i--, sublist); sublist = sublist->next)
+ /* Skip GCC 3.X member functions which are duplicates of the callable
+ constructor/destructor. */
+ if (strcmp (main_fn_name, "__base_ctor") == 0
+ || strcmp (main_fn_name, "__base_dtor") == 0
+ || strcmp (main_fn_name, "__deleting_dtor") == 0)
{
- new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
+ xfree (main_fn_name);
}
+ else
+ {
+ int has_stub = 0;
+ int has_destructor = 0, has_other = 0;
+ int is_v3 = 0;
+ struct next_fnfield *tmp_sublist;
+
+ /* Various versions of GCC emit various mostly-useless
+ strings in the name field for special member functions.
+
+ For stub methods, we need to defer correcting the name
+ until we are ready to unstub the method, because the current
+ name string is used by gdb_mangle_name. The only stub methods
+ of concern here are GNU v2 operators; other methods have their
+ names correct (see caveat below).
+
+ For non-stub methods, in GNU v3, we have a complete physname.
+ Therefore we can safely correct the name now. This primarily
+ affects constructors and destructors, whose name will be
+ __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
+ operators will also have incorrect names; for instance,
+ "operator int" will be named "operator i" (i.e. the type is
+ mangled).
+
+ For non-stub methods in GNU v2, we have no easy way to
+ know if we have a complete physname or not. For most
+ methods the result depends on the platform (if CPLUS_MARKER
+ can be `$' or `.', it will use minimal debug information, or
+ otherwise the full physname will be included).
+
+ Rather than dealing with this, we take a different approach.
+ For v3 mangled names, we can use the full physname; for v2,
+ we use cplus_demangle_opname (which is actually v2 specific),
+ because the only interesting names are all operators - once again
+ barring the caveat below. Skip this process if any method in the
+ group is a stub, to prevent our fouling up the workings of
+ gdb_mangle_name.
+
+ The caveat: GCC 2.95.x (and earlier?) put constructors and
+ destructors in the same method group. We need to split this
+ into two groups, because they should have different names.
+ So for each method group we check whether it contains both
+ routines whose physname appears to be a destructor (the physnames
+ for and destructors are always provided, due to quirks in v2
+ mangling) and routines whose physname does not appear to be a
+ destructor. If so then we break up the list into two halves.
+ Even if the constructors and destructors aren't in the same group
+ the destructor will still lack the leading tilde, so that also
+ needs to be fixed.
+
+ So, to summarize what we expect and handle here:
+
+ Given Given Real Real Action
+ method name physname physname method name
+
+ __opi [none] __opi__3Foo operator int opname
+ [now or later]
+ Foo _._3Foo _._3Foo ~Foo separate and
+ rename
+ operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
+ __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
+ */
+
+ tmp_sublist = sublist;
+ while (tmp_sublist != NULL)
+ {
+ if (tmp_sublist->fn_field.is_stub)
+ has_stub = 1;
+ if (tmp_sublist->fn_field.physname[0] == '_'
+ && tmp_sublist->fn_field.physname[1] == 'Z')
+ is_v3 = 1;
+
+ if (is_destructor_name (tmp_sublist->fn_field.physname))
+ has_destructor++;
+ else
+ has_other++;
- new_fnlist->fn_fieldlist.length = length;
- new_fnlist->next = fip->fnlist;
- fip->fnlist = new_fnlist;
- nfn_fields++;
- total_length += length;
- STABS_CONTINUE (pp, objfile);
+ tmp_sublist = tmp_sublist->next;
+ }
+
+ if (has_destructor && has_other)
+ {
+ struct next_fnfieldlist *destr_fnlist;
+ struct next_fnfield *last_sublist;
+
+ /* Create a new fn_fieldlist for the destructors. */
+
+ destr_fnlist = (struct next_fnfieldlist *)
+ xmalloc (sizeof (struct next_fnfieldlist));
+ make_cleanup (xfree, destr_fnlist);
+ memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist));
+ destr_fnlist->fn_fieldlist.name
+ = obconcat (&objfile->type_obstack, "", "~",
+ new_fnlist->fn_fieldlist.name);
+
+ destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
+ obstack_alloc (&objfile->type_obstack,
+ sizeof (struct fn_field) * has_destructor);
+ memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
+ sizeof (struct fn_field) * has_destructor);
+ tmp_sublist = sublist;
+ last_sublist = NULL;
+ i = 0;
+ while (tmp_sublist != NULL)
+ {
+ if (!is_destructor_name (tmp_sublist->fn_field.physname))
+ {
+ tmp_sublist = tmp_sublist->next;
+ continue;
+ }
+
+ destr_fnlist->fn_fieldlist.fn_fields[i++]
+ = tmp_sublist->fn_field;
+ if (last_sublist)
+ last_sublist->next = tmp_sublist->next;
+ else
+ sublist = tmp_sublist->next;
+ last_sublist = tmp_sublist;
+ tmp_sublist = tmp_sublist->next;
+ }
+
+ destr_fnlist->fn_fieldlist.length = has_destructor;
+ destr_fnlist->next = fip->fnlist;
+ fip->fnlist = destr_fnlist;
+ nfn_fields++;
+ total_length += has_destructor;
+ length -= has_destructor;
+ }
+ else if (is_v3)
+ {
+ /* v3 mangling prevents the use of abbreviated physnames,
+ so we can do this here. There are stubbed methods in v3
+ only:
+ - in -gstabs instead of -gstabs+
+ - or for static methods, which are output as a function type
+ instead of a method type. */
+
+ update_method_name_from_physname (&new_fnlist->fn_fieldlist.name,
+ sublist->fn_field.physname);
+ }
+ else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
+ {
+ new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL);
+ xfree (main_fn_name);
+ }
+ else if (!has_stub)
+ {
+ char dem_opname[256];
+ int ret;
+ ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
+ dem_opname, DMGL_ANSI);
+ if (!ret)
+ ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
+ dem_opname, 0);
+ if (ret)
+ new_fnlist->fn_fieldlist.name
+ = obsavestring (dem_opname, strlen (dem_opname),
+ &objfile->type_obstack);
+ }
+
+ new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
+ obstack_alloc (&objfile->type_obstack,
+ sizeof (struct fn_field) * length);
+ memset (new_fnlist->fn_fieldlist.fn_fields, 0,
+ sizeof (struct fn_field) * length);
+ for (i = length; (i--, sublist); sublist = sublist->next)
+ {
+ new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
+ }
+
+ new_fnlist->fn_fieldlist.length = length;
+ new_fnlist->next = fip->fnlist;
+ fip->fnlist = new_fnlist;
+ nfn_fields++;
+ total_length += length;
+ }
}
if (nfn_fields)
switch (cpp_abbrev)
{
case 'f': /* $vf -- a virtual function table pointer */
+ name = type_name_no_tag (context);
+ if (name == NULL)
+ {
+ name = "";
+ }
fip->list->field.name =
- obconcat (&objfile->type_obstack, vptr_name, "", "");
+ obconcat (&objfile->type_obstack, vptr_name, name, "");
break;
case 'b': /* $vb -- a virtual bsomethingorother */
/* Read each data member type until we find the terminating ';' at the end of
the data member list, or break for some other reason such as finding the
start of the member function list. */
+ /* Stab string for structure/union does not end with two ';' in
+ SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
- while (**pp != ';')
+ while (**pp != ';' && **pp != '\0')
{
- if (os9k_stabs && **pp == ',')
- break;
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs && **pp == ',')
+// OBSOLETE break;
+#endif /* OBSOLETE OS9K */
STABS_CONTINUE (pp, objfile);
/* Get space to record the next field's data. */
new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new);
+ make_cleanup (xfree, new);
memset (new, 0, sizeof (struct nextfield));
new->next = fip->list;
fip->list = new;
}
if (p[0] == ':' && p[1] == ':')
{
- /* chill the list of fields: the last entry (at the head) is a
- partially constructed entry which we now scrub. */
+ /* (OBSOLETE) chill (OBSOLETE) the list of fields: the last
+ entry (at the head) is a partially constructed entry which we
+ now scrub. */
fip->list = fip->list->next;
}
return 1;
for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
{
new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new);
+ make_cleanup (xfree, new);
memset (new, 0, sizeof (struct nextfield));
new->next = fip->list;
fip->list = new;
/* allocate a new fip */
new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new);
+ make_cleanup (xfree, new);
memset (new, 0, sizeof (struct nextfield));
new->next = fip->list;
fip->list = new;
{
/* allocate a new fip */
new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new);
+ make_cleanup (xfree, new);
memset (new, 0, sizeof (struct nextfield));
new->next = fip->list;
fip->list = new;
return 1;
}
+
+static struct complaint multiply_defined_struct =
+{"struct/union type gets multiply defined: %s%s", 0, 0};
+
+
+/* Complain that the compiler has emitted more than one definition for the
+ structure type TYPE. */
+static void
+complain_about_struct_wipeout (struct type *type)
+{
+ char *name = "";
+ char *kind = "";
+
+ if (TYPE_TAG_NAME (type))
+ {
+ name = TYPE_TAG_NAME (type);
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_STRUCT: kind = "struct "; break;
+ case TYPE_CODE_UNION: kind = "union "; break;
+ case TYPE_CODE_ENUM: kind = "enum "; break;
+ default: kind = "";
+ }
+ }
+ else if (TYPE_NAME (type))
+ {
+ name = TYPE_NAME (type);
+ kind = "";
+ }
+ else
+ {
+ name = "<unknown>";
+ kind = "";
+ }
+
+ complain (&multiply_defined_struct, kind, name);
+}
+
+
/* Read the description of a structure (or union type) and return an object
describing the type.
*/
static struct type *
-read_struct_type (char **pp, struct type *type, struct objfile *objfile)
+read_struct_type (char **pp, struct type *type, enum type_code type_code,
+ struct objfile *objfile)
{
struct cleanup *back_to;
struct field_info fi;
fi.list = NULL;
fi.fnlist = NULL;
+ /* When describing struct/union/class types in stabs, G++ always drops
+ all qualifications from the name. So if you've got:
+ struct A { ... struct B { ... }; ... };
+ then G++ will emit stabs for `struct A::B' that call it simply
+ `struct B'. Obviously, if you've got a real top-level definition for
+ `struct B', or other nested definitions, this is going to cause
+ problems.
+
+ Obviously, GDB can't fix this by itself, but it can at least avoid
+ scribbling on existing structure type objects when new definitions
+ appear. */
+ if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF
+ || TYPE_STUB (type)))
+ {
+ complain_about_struct_wipeout (type);
+
+ /* It's probably best to return the type unchanged. */
+ return type;
+ }
+
back_to = make_cleanup (null_cleanup, 0);
INIT_CPLUS_SPECIFIC (type);
+ TYPE_CODE (type) = type_code;
TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
/* First comes the total size in bytes. */
Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
for these, produce a type like float[][]. */
- if (os9k_stabs)
- index_type = builtin_type_int;
- else
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE index_type = builtin_type_int;
+// OBSOLETE else
+#endif /* OBSOLETE OS9K */
{
index_type = read_type (pp, objfile);
if (**pp != ';')
(*pp)++;
adjustable = 1;
}
- lower = read_huge_number (pp, os9k_stabs ? ',' : ';', &nbits);
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE lower = read_huge_number (pp, os9k_stabs ? ',' : ';', &nbits);
+#else /* OBSOLETE OS9K */
+ lower = read_huge_number (pp, ';', &nbits);
+#endif /* OBSOLETE OS9K */
+
if (nbits != 0)
return error_type (pp, objfile);
osyms = *symlist;
o_nsyms = osyms ? osyms->nsyms : 0;
- if (os9k_stabs)
- {
- /* Size. Perhaps this does not have to be conditionalized on
- os9k_stabs (assuming the name of an enum constant can't start
- with a digit). */
- read_huge_number (pp, 0, &nbits);
- if (nbits != 0)
- return error_type (pp, objfile);
- }
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE {
+// OBSOLETE /* Size. Perhaps this does not have to be conditionalized on
+// OBSOLETE os9k_stabs (assuming the name of an enum constant can't start
+// OBSOLETE with a digit). */
+// OBSOLETE read_huge_number (pp, 0, &nbits);
+// OBSOLETE if (nbits != 0)
+// OBSOLETE return error_type (pp, objfile);
+// OBSOLETE }
+#endif /* OBSOLETE OS9K */
/* The aix4 compiler emits an extra field before the enum members;
my guess is it's a type of some sort. Just ignore it. */
FIXME. */
static struct type *
-read_sun_builtin_type (pp, typenums, objfile)
- char **pp;
- int typenums[2];
- struct objfile *objfile;
+read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile)
{
int type_bits;
int nbits;
}
static struct type *
-read_sun_floating_type (pp, typenums, objfile)
- char **pp;
- int typenums[2];
- struct objfile *objfile;
+read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile)
{
int nbits;
int details;
int nbytes;
+ struct type *rettype;
/* The first number has more details about the type, for example
FN_COMPLEX. */
if (details == NF_COMPLEX || details == NF_COMPLEX16
|| details == NF_COMPLEX32)
- /* This is a type we can't handle, but we do know the size.
- We also will be able to give it a name. */
- return init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
+ {
+ rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
+ TYPE_TARGET_TYPE (rettype)
+ = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile);
+ return rettype;
+ }
return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
}
p++;
}
- if (os9k_stabs)
- upper_limit = ULONG_MAX / radix;
- else
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE if (os9k_stabs)
+// OBSOLETE upper_limit = ULONG_MAX / radix;
+// OBSOLETE else
+#endif /* OBSOLETE OS9K */
upper_limit = LONG_MAX / radix;
while ((c = *p++) >= '0' && c < ('0' + radix))
}
static struct type *
-read_range_type (pp, typenums, objfile)
- char **pp;
- int typenums[2];
- struct objfile *objfile;
+read_range_type (char **pp, int typenums[2], struct objfile *objfile)
{
char *orig_pp = *pp;
int rangenums[2];
if (n3 == 0 && n2 > 0)
{
+ struct type *float_type
+ = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
+
if (self_subrange)
{
- return init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
+ struct type *complex_type =
+ init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
+ TYPE_TARGET_TYPE (complex_type) = float_type;
+ return complex_type;
}
else
- {
- return init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
- }
+ return float_type;
}
/* If the upper bound is -1, it must really be an unsigned int. */
else if (self_subrange && n2 == 0 && n3 == 127)
return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
- else if (current_symbol && SYMBOL_LANGUAGE (current_symbol) == language_chill
- && !self_subrange)
- goto handle_true_range;
+#if 0
+ /* OBSOLETE else if (current_symbol && SYMBOL_LANGUAGE (current_symbol) == language_chill */
+ /* OBSOLETE && !self_subrange) */
+ /* OBSOLETE goto handle_true_range; */
+#endif
/* We used to do this only for subrange of self or subrange of int. */
else if (n2 == 0)
and terminated with END. Return the list of types read in, or (struct type
**)-1 if there is an error. */
-static struct type **
-read_args (char **pp, int end, struct objfile *objfile)
+static struct field *
+read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
+ int *varargsp)
{
/* FIXME! Remove this arbitrary limit! */
- struct type *types[1024], **rval; /* allow for fns of 1023 parameters */
- int n = 0;
+ struct type *types[1024]; /* allow for fns of 1023 parameters */
+ int n = 0, i;
+ struct field *rval;
while (**pp != end)
{
if (**pp != ',')
/* Invalid argument list: no ','. */
- return (struct type **) -1;
+ return (struct field *) -1;
(*pp)++;
STABS_CONTINUE (pp, objfile);
types[n++] = read_type (pp, objfile);
}
(*pp)++; /* get past `end' (the ':' character) */
- if (n == 1)
- {
- rval = (struct type **) xmalloc (2 * sizeof (struct type *));
- }
- else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
- {
- rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *));
- memset (rval + n, 0, sizeof (struct type *));
- }
+ if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
+ *varargsp = 1;
else
{
- rval = (struct type **) xmalloc (n * sizeof (struct type *));
+ n--;
+ *varargsp = 0;
}
- memcpy (rval, types, n * sizeof (struct type *));
+
+ rval = (struct field *) xmalloc (n * sizeof (struct field));
+ memset (rval, 0, n * sizeof (struct field));
+ for (i = 0; i < n; i++)
+ rval[i].type = types[i];
+ *nargsp = n;
return rval;
}
\f
as well as in check_typedef to deal with the (legitimate in
C though not C++) case of several types with the same name
in different source files. */
- if (TYPE_FLAGS (*type) & TYPE_FLAG_STUB)
+ if (TYPE_STUB (*type))
{
struct pending *ppt;
int i;
&& (TYPE_CODE (SYMBOL_TYPE (sym)) ==
TYPE_CODE (*type))
&& STREQ (SYMBOL_NAME (sym), typename))
- {
- memcpy (*type, SYMBOL_TYPE (sym),
- sizeof (struct type));
- }
+ replace_type (*type, SYMBOL_TYPE (sym));
}
}
}
/* FIXME: If common_block_name is not already NULL, we should complain(). */
common_block_name = NULL;
- os9k_stabs = 0;
+#if 0 /* OBSOLETE OS9K */
+// OBSOLETE os9k_stabs = 0;
+#endif /* OBSOLETE OS9K */
}
/* Call after end_symtab() */
{
if (type_vector)
{
- free ((char *) type_vector);
+ xfree (type_vector);
}
type_vector = 0;
type_vector_length = 0;
if (global_stabs)
{
patch_block_stabs (global_symbols, global_stabs, objfile);
- free ((PTR) global_stabs);
+ xfree (global_stabs);
global_stabs = NULL;
}
}
projects / deliverable / binutils-gdb.git / blobdiff