/* Support routines for decoding "stabs" debugging information format.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
- Software Foundation, Inc.
+ Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 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/>. */
/* Support routines for reading and decoding debugging information in
the "stabs" format. This format is used with many systems that use
static struct field *read_args (char **, int, struct objfile *, int *, int *);
-static void add_undefined_type (struct type *);
+static void add_undefined_type (struct type *, int[2]);
static int
read_cpp_abbrev (struct field_info *, char **, struct type *,
static const char vptr_name[] = "_vptr$";
static const char vb_name[] = "_vb$";
-/* Define this as 1 if a pcc declaration of a char or short argument
- gives the correct address. Otherwise assume pcc gives the
- address of the corresponding int, which is not the same on a
- big-endian machine. */
-
-#if !defined (BELIEVE_PCC_PROMOTION)
-#define BELIEVE_PCC_PROMOTION 0
-#endif
-
static void
invalid_cpp_abbrev_complaint (const char *arg1)
{
static int undef_types_length;
static struct symbol *current_symbol = NULL;
+/* Make a list of nameless types that are undefined.
+ This happens when another type is referenced by its number
+ before this type is actually defined. For instance "t(0,1)=k(0,2)"
+ and type (0,2) is defined only later. */
+
+struct nat
+{
+ int typenums[2];
+ struct type *type;
+};
+static struct nat *noname_undefs;
+static int noname_undefs_allocated;
+static int noname_undefs_length;
+
/* Check for and handle cretinous stabs symbol name continuation! */
#define STABS_CONTINUE(pp,objfile) \
do { \
if (real_filenum >= N_HEADER_FILES (current_objfile))
{
- struct type *temp_type;
- struct type **temp_type_p;
+ static struct type **temp_type_p;
warning (_("GDB internal error: bad real_filenum"));
error_return:
- temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL);
- temp_type_p = (struct type **) xmalloc (sizeof (struct type *));
- *temp_type_p = temp_type;
+ temp_type_p = &builtin_type_error;
return temp_type_p;
}
case 'r':
{
double d = atof (p);
- char *dbl_valu;
+ gdb_byte *dbl_valu;
/* FIXME-if-picky-about-floating-accuracy: Should be using
target arithmetic to get the value. real.c in GCC
SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
FT_DBL_PREC_FLOAT);
- dbl_valu = (char *)
+ dbl_valu =
obstack_alloc (&objfile->objfile_obstack,
TYPE_LENGTH (SYMBOL_TYPE (sym)));
store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, &local_symbols);
- if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
+ if (gdbarch_byte_order (current_gdbarch) != BFD_ENDIAN_BIG)
{
/* On little-endian machines, this crud is never necessary,
and, if the extra bytes contain garbage, is harmful. */
}
/* If it's gcc-compiled, if it says `short', believe it. */
- if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
+ if (processing_gcc_compilation
+ || gdbarch_believe_pcc_promotion (current_gdbarch))
break;
- if (!BELIEVE_PCC_PROMOTION)
+ if (!gdbarch_believe_pcc_promotion (current_gdbarch))
{
/* This is the signed type which arguments get promoted to. */
static struct type *pcc_promotion_type;
/* Call it "int" because this is mainly C lossage. */
if (pcc_promotion_type == NULL)
pcc_promotion_type =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
0, "int", NULL);
if (pcc_unsigned_promotion_type == NULL)
pcc_unsigned_promotion_type =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
/* If PCC says a parameter is a short or a char, it is
/* Parameter which is in a register. */
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 + NUM_PSEUDO_REGS)
+ SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
+ if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch))
{
reg_value_complaint (SYMBOL_VALUE (sym),
- NUM_REGS + NUM_PSEUDO_REGS,
+ gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch),
SYMBOL_PRINT_NAME (sym));
- SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
+ SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
+ /* Known safe, though useless */
}
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, &local_symbols);
/* Register variable (either global or local). */
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 + NUM_PSEUDO_REGS)
+ SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
+ if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch))
{
reg_value_complaint (SYMBOL_VALUE (sym),
- NUM_REGS + NUM_PSEUDO_REGS,
+ gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch),
SYMBOL_PRINT_NAME (sym));
- SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
+ SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
+ /* Known safe, though useless */
}
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
if (within_function)
break;
case 't':
+ /* In Ada, there is no distinction between typedef and non-typedef;
+ any type declaration implicitly has the equivalent of a typedef,
+ and thus 't' is in fact equivalent to 'Tt'.
+
+ Therefore, for Ada units, we check the character immediately
+ before the 't', and if we do not find a 'T', then make sure to
+ create the associated symbol in the STRUCT_DOMAIN ('t' definitions
+ will be stored in the VAR_DOMAIN). If the symbol was indeed
+ defined as 'Tt' then the STRUCT_DOMAIN symbol will be created
+ elsewhere, so we don't need to take care of that.
+
+ This is important to do, because of forward references:
+ The cleanup of undefined types stored in undef_types only uses
+ STRUCT_DOMAIN symbols to perform the replacement. */
+ synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T');
+
/* Typedef */
SYMBOL_TYPE (sym) = read_type (&p, objfile);
}
add_symbol_to_list (sym, &file_symbols);
+
+ if (synonym)
+ {
+ /* Create the STRUCT_DOMAIN clone. */
+ struct symbol *struct_sym = (struct symbol *)
+ obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
+
+ *struct_sym = *sym;
+ SYMBOL_CLASS (struct_sym) = LOC_TYPEDEF;
+ SYMBOL_VALUE (struct_sym) = valu;
+ SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN;
+ if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
+ TYPE_NAME (SYMBOL_TYPE (sym))
+ = obconcat (&objfile->objfile_obstack, "", "",
+ DEPRECATED_SYMBOL_NAME (sym));
+ add_symbol_to_list (struct_sym, &file_symbols);
+ }
+
break;
case 'T':
/* Reference parameter which is in a register. */
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 + NUM_PSEUDO_REGS)
+ SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
+ if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch))
{
reg_value_complaint (SYMBOL_VALUE (sym),
- NUM_REGS + NUM_PSEUDO_REGS,
+ gdbarch_num_regs (current_gdbarch)
+ + gdbarch_num_pseudo_regs (current_gdbarch),
SYMBOL_PRINT_NAME (sym));
- SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
+ SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
+ /* Known safe, though useless */
}
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, &local_symbols);
doesn't get patched up by the time we're done
reading. */
if (TYPE_CODE (type) == TYPE_CODE_UNDEF)
- add_undefined_type (type);
+ add_undefined_type (type, typenums);
return type;
}
INIT_CPLUS_SPECIFIC (type);
TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
- add_undefined_type (type);
+ add_undefined_type (type, typenums);
return type;
}
memtype = read_type (pp, objfile);
type = dbx_alloc_type (typenums, objfile);
- smash_to_member_type (type, domain, memtype);
+ smash_to_memberptr_type (type, domain, memtype);
}
else
/* type attribute */
return_type = read_type (pp, objfile);
args = read_args (pp, ';', objfile, &nargs, &varargs);
+ if (args == NULL)
+ return error_type (pp, objfile);
type = dbx_alloc_type (typenums, objfile);
smash_to_method_type (type, domain, return_type, args,
nargs, varargs);
}
else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
{
- new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL);
+ new_fnlist->fn_fieldlist.name =
+ concat ("~", main_fn_name, (char *)NULL);
xfree (main_fn_name);
}
else if (!has_stub)
if ((FIELD_BITSIZE (fip->list->field)
== TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
|| (TYPE_CODE (field_type) == TYPE_CODE_ENUM
- && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT)
+ && FIELD_BITSIZE (fip->list->field)
+ == gdbarch_int_bit (current_gdbarch))
)
&&
FIELD_BITPOS (fip->list->field) % 8 == 0)
/* Now fill in the fields of the type-structure. */
- TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT;
+ TYPE_LENGTH (type) = gdbarch_int_bit (current_gdbarch) / HOST_CHAR_BIT;
TYPE_CODE (type) = TYPE_CODE_ENUM;
TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
if (unsigned_enum)
int nbits = 0;
int c;
long upper_limit;
- int twos_complement_representation = radix == 8 && twos_complement_bits > 0;
+ int twos_complement_representation;
if (*p == '-')
{
p++;
}
+ twos_complement_representation = radix == 8 && twos_complement_bits > 0;
upper_limit = LONG_MAX / radix;
while ((c = *p++) >= '0' && c < ('0' + radix))
/* It is unsigned int or unsigned long. */
/* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
compatibility hack. */
- return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ return init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, NULL, objfile);
}
of self_subrange. */
else if (n3 == 0 && n2 < 0
&& (self_subrange
- || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT))
+ || n2 == -gdbarch_long_long_bit
+ (current_gdbarch) / TARGET_CHAR_BIT))
return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile);
else if (n2 == -n3 - 1)
{
_("base type %d of range type is not defined"), rangenums[1]);
if (range_type_index == NULL)
range_type_index =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
0, "range type index type", NULL);
index_type = range_type_index;
}
}
/* Read in an argument list. This is a list of types, separated by commas
- and terminated with END. Return the list of types read in, or (struct type
- **)-1 if there is an error. */
+ and terminated with END. Return the list of types read in, or NULL
+ if there is an error. */
static struct field *
read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
{
if (**pp != ',')
/* Invalid argument list: no ','. */
- return (struct field *) -1;
+ return NULL;
(*pp)++;
STABS_CONTINUE (pp, objfile);
types[n++] = read_type (pp, objfile);
\f
-/* What about types defined as forward references inside of a small lexical
- scope? */
-/* Add a type to the list of undefined types to be checked through
- once this file has been read in. */
+/* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector.
+ See add_undefined_type for more details. */
+
+static void
+add_undefined_type_noname (struct type *type, int typenums[2])
+{
+ struct nat nat;
+
+ nat.typenums[0] = typenums [0];
+ nat.typenums[1] = typenums [1];
+ nat.type = type;
+
+ if (noname_undefs_length == noname_undefs_allocated)
+ {
+ noname_undefs_allocated *= 2;
+ noname_undefs = (struct nat *)
+ xrealloc ((char *) noname_undefs,
+ noname_undefs_allocated * sizeof (struct nat));
+ }
+ noname_undefs[noname_undefs_length++] = nat;
+}
+
+/* Add TYPE to the UNDEF_TYPES vector.
+ See add_undefined_type for more details. */
static void
-add_undefined_type (struct type *type)
+add_undefined_type_1 (struct type *type)
{
if (undef_types_length == undef_types_allocated)
{
undef_types[undef_types_length++] = type;
}
+/* What about types defined as forward references inside of a small lexical
+ scope? */
+/* Add a type to the list of undefined types to be checked through
+ once this file has been read in.
+
+ In practice, we actually maintain two such lists: The first list
+ (UNDEF_TYPES) is used for types whose name has been provided, and
+ concerns forward references (eg 'xs' or 'xu' forward references);
+ the second list (NONAME_UNDEFS) is used for types whose name is
+ unknown at creation time, because they were referenced through
+ their type number before the actual type was declared.
+ This function actually adds the given type to the proper list. */
+
+static void
+add_undefined_type (struct type *type, int typenums[2])
+{
+ if (TYPE_TAG_NAME (type) == NULL)
+ add_undefined_type_noname (type, typenums);
+ else
+ add_undefined_type_1 (type);
+}
+
+/* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */
+
+void
+cleanup_undefined_types_noname (void)
+{
+ int i;
+
+ for (i = 0; i < noname_undefs_length; i++)
+ {
+ struct nat nat = noname_undefs[i];
+ struct type **type;
+
+ type = dbx_lookup_type (nat.typenums);
+ if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF)
+ replace_type (nat.type, *type);
+ }
+
+ noname_undefs_length = 0;
+}
+
/* Go through each undefined type, see if it's still undefined, and fix it
up if possible. We have two kinds of undefined types:
TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
yet defined at the time a pointer to it was made.
Fix: Do a full lookup on the struct/union tag. */
+
void
-cleanup_undefined_types (void)
+cleanup_undefined_types_1 (void)
{
struct type **type;
undef_types_length = 0;
}
+/* Try to fix all the undefined types we ecountered while processing
+ this unit. */
+
+void
+cleanup_undefined_types (void)
+{
+ cleanup_undefined_types_1 ();
+ cleanup_undefined_types_noname ();
+}
+
/* Scan through all of the global symbols defined in the object file,
assigning values to the debugging symbols that need to be assigned
to. Get these symbols from the minimal symbol table. */
undef_types_length = 0;
undef_types = (struct type **)
xmalloc (undef_types_allocated * sizeof (struct type *));
+
+ noname_undefs_allocated = 20;
+ noname_undefs_length = 0;
+ noname_undefs = (struct nat *)
+ xmalloc (noname_undefs_allocated * sizeof (struct nat));
}
projects / deliverable / binutils-gdb.git / blobdiff