/* Support routines for manipulating internal types for GDB.
- Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
&floatformat_vax_d,
&floatformat_vax_d
};
+const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
+ &floatformat_ibm_long_double,
+ &floatformat_ibm_long_double
+};
struct type *builtin_type_ieee_single;
struct type *builtin_type_ieee_double;
static void print_arg_types (struct field *, int, int);
static void dump_fn_fieldlists (struct type *, int);
static void print_cplus_stuff (struct type *, int);
-static void virtual_base_list_aux (struct type *dclass);
/* Alloc a new type structure and fill it with some defaults. If
if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
low_bound = high_bound = 0;
CHECK_TYPEDEF (element_type);
- TYPE_LENGTH (result_type) =
- TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
+ /* Be careful when setting the array length. Ada arrays can be
+ empty arrays with the high_bound being smaller than the low_bound.
+ In such cases, the array length should be zero. */
+ if (high_bound < low_bound)
+ TYPE_LENGTH (result_type) = 0;
+ else
+ TYPE_LENGTH (result_type) =
+ TYPE_LENGTH (element_type) * (high_bound - low_bound + 1);
TYPE_NFIELDS (result_type) = 1;
TYPE_FIELDS (result_type) =
(struct field *) TYPE_ALLOC (result_type, sizeof (struct field));
== TYPE_CODE_RANGE))
{
/* Now recompute the length of the array type, based on its
- number of elements and the target type's length. */
- TYPE_LENGTH (type) =
- ((TYPE_FIELD_BITPOS (range_type, 1)
- - TYPE_FIELD_BITPOS (range_type, 0) + 1)
- * TYPE_LENGTH (target_type));
+ number of elements and the target type's length.
+ Watch out for Ada null Ada arrays where the high bound
+ is smaller than the low bound. */
+ const int low_bound = TYPE_FIELD_BITPOS (range_type, 0);
+ const int high_bound = TYPE_FIELD_BITPOS (range_type, 1);
+ int nb_elements;
+
+ if (high_bound < low_bound)
+ nb_elements = 0;
+ else
+ nb_elements = high_bound - low_bound + 1;
+
+ TYPE_LENGTH (type) = nb_elements * TYPE_LENGTH (target_type);
TYPE_FLAGS (type) &= ~TYPE_FLAG_TARGET_STUB;
}
else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
}
}
-/* Look up a fundamental type for the specified objfile.
- May need to construct such a type if this is the first use.
-
- Some object file formats (ELF, COFF, etc) do not define fundamental
- types such as "int" or "double". Others (stabs for example), do
- define fundamental types.
-
- For the formats which don't provide fundamental types, gdb can
- create such types, using defaults reasonable for the current
- language and the current target machine.
-
- NOTE: This routine is obsolescent. Each debugging format reader
- should manage it's own fundamental types, either creating them from
- suitable defaults or reading them from the debugging information,
- whichever is appropriate. The DWARF reader has already been fixed
- to do this. Once the other readers are fixed, this routine will go
- away. Also note that fundamental types should be managed on a
- compilation unit basis in a multi-language environment, not on a
- linkage unit basis as is done here. */
-
-
-struct type *
-lookup_fundamental_type (struct objfile *objfile, int typeid)
-{
- struct type **typep;
- int nbytes;
-
- if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
- {
- error (_("internal error - invalid fundamental type id %d"),
- typeid);
- }
-
- /* If this is the first time we need a fundamental type for this
- objfile then we need to initialize the vector of type
- pointers. */
-
- if (objfile->fundamental_types == NULL)
- {
- nbytes = FT_NUM_MEMBERS * sizeof (struct type *);
- objfile->fundamental_types = (struct type **)
- obstack_alloc (&objfile->objfile_obstack, nbytes);
- memset ((char *) objfile->fundamental_types, 0, nbytes);
- OBJSTAT (objfile, n_types += FT_NUM_MEMBERS);
- }
-
- /* Look for this particular type in the fundamental type vector. If
- one is not found, create and install one appropriate for the
- current language. */
-
- typep = objfile->fundamental_types + typeid;
- if (*typep == NULL)
- {
- *typep = create_fundamental_type (objfile, typeid);
- }
-
- return (*typep);
-}
-
int
can_dereference (struct type *t)
{
return 0;
}
-
-
-
-/* See whether DCLASS has a virtual table. This routine is aimed at
- the HP/Taligent ANSI C++ runtime model, and may not work with other
- runtime models. Return 1 => Yes, 0 => No. */
-
-int
-has_vtable (struct type *dclass)
-{
- /* In the HP ANSI C++ runtime model, a class has a vtable only if it
- has virtual functions or virtual bases. */
-
- int i;
-
- if (TYPE_CODE (dclass) != TYPE_CODE_CLASS)
- return 0;
-
- /* First check for the presence of virtual bases. */
- if (TYPE_FIELD_VIRTUAL_BITS (dclass))
- for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
- if (B_TST (TYPE_FIELD_VIRTUAL_BITS (dclass), i))
- return 1;
-
- /* Next check for virtual functions. */
- if (TYPE_FN_FIELDLISTS (dclass))
- for (i = 0; i < TYPE_NFN_FIELDS (dclass); i++)
- if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (dclass, i), 0))
- return 1;
-
- /* Recurse on non-virtual bases to see if any of them needs a
- vtable. */
- if (TYPE_FIELD_VIRTUAL_BITS (dclass))
- for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
- if ((!B_TST (TYPE_FIELD_VIRTUAL_BITS (dclass), i))
- && (has_vtable (TYPE_FIELD_TYPE (dclass, i))))
- return 1;
-
- /* Well, maybe we don't need a virtual table. */
- return 0;
-}
-
-/* Return a pointer to the "primary base class" of DCLASS.
-
- A NULL return indicates that DCLASS has no primary base, or that it
- couldn't be found (insufficient information).
-
- This routine is aimed at the HP/Taligent ANSI C++ runtime model,
- and may not work with other runtime models. */
-
-struct type *
-primary_base_class (struct type *dclass)
-{
- /* In HP ANSI C++'s runtime model, a "primary base class" of a class
- is the first directly inherited, non-virtual base class that
- requires a virtual table. */
-
- int i;
-
- if (TYPE_CODE (dclass) != TYPE_CODE_CLASS)
- return NULL;
-
- for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
- if (!TYPE_FIELD_VIRTUAL (dclass, i)
- && has_vtable (TYPE_FIELD_TYPE (dclass, i)))
- return TYPE_FIELD_TYPE (dclass, i);
-
- return NULL;
-}
-
-/* Global manipulated by virtual_base_list[_aux](). */
-
-static struct vbase *current_vbase_list = NULL;
-
-/* Return a pointer to a null-terminated list of struct vbase items.
- The vbasetype pointer of each item in the list points to the type
- information for a virtual base of the argument DCLASS.
-
- Helper function for virtual_base_list().
- Note: the list goes backward, right-to-left.
- virtual_base_list() copies the items out in reverse order. */
-
-static void
-virtual_base_list_aux (struct type *dclass)
-{
- struct vbase *tmp_vbase;
- int i;
-
- if (TYPE_CODE (dclass) != TYPE_CODE_CLASS)
- return;
-
- for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++)
- {
- /* Recurse on this ancestor, first */
- virtual_base_list_aux (TYPE_FIELD_TYPE (dclass, i));
-
- /* If this current base is itself virtual, add it to the list */
- if (BASETYPE_VIA_VIRTUAL (dclass, i))
- {
- struct type *basetype = TYPE_FIELD_TYPE (dclass, i);
-
- /* Check if base already recorded */
- tmp_vbase = current_vbase_list;
- while (tmp_vbase)
- {
- if (tmp_vbase->vbasetype == basetype)
- break; /* found it */
- tmp_vbase = tmp_vbase->next;
- }
-
- if (!tmp_vbase) /* normal exit from loop */
- {
- /* Allocate new item for this virtual base */
- tmp_vbase = (struct vbase *) xmalloc (sizeof (struct vbase));
-
- /* Stick it on at the end of the list */
- tmp_vbase->vbasetype = basetype;
- tmp_vbase->next = current_vbase_list;
- current_vbase_list = tmp_vbase;
- }
- } /* if virtual */
- } /* for loop over bases */
-}
-
-
-/* Compute the list of virtual bases in the right order. Virtual
- bases are laid out in the object's memory area in order of their
- occurrence in a depth-first, left-to-right search through the
- ancestors.
-
- Argument DCLASS is the type whose virtual bases are required.
- Return value is the address of a null-terminated array of pointers
- to struct type items.
-
- This routine is aimed at the HP/Taligent ANSI C++ runtime model,
- and may not work with other runtime models.
-
- This routine merely hands off the argument to virtual_base_list_aux()
- and then copies the result into an array to save space. */
-
-static struct type **
-virtual_base_list (struct type *dclass)
-{
- struct vbase *tmp_vbase;
- struct vbase *tmp_vbase_2;
- int i;
- int count;
- struct type **vbase_array;
-
- current_vbase_list = NULL;
- virtual_base_list_aux (dclass);
-
- for (i = 0, tmp_vbase = current_vbase_list;
- tmp_vbase != NULL;
- i++, tmp_vbase = tmp_vbase->next)
- /* no body */ ;
-
- count = i;
-
- vbase_array = (struct type **)
- xmalloc ((count + 1) * sizeof (struct type *));
-
- for (i = count - 1, tmp_vbase = current_vbase_list;
- i >= 0; i--,
- tmp_vbase = tmp_vbase->next)
- vbase_array[i] = tmp_vbase->vbasetype;
-
- /* Get rid of constructed chain. */
- tmp_vbase_2 = tmp_vbase = current_vbase_list;
- while (tmp_vbase)
- {
- tmp_vbase = tmp_vbase->next;
- xfree (tmp_vbase_2);
- tmp_vbase_2 = tmp_vbase;
- }
-
- vbase_array[count] = NULL;
- return vbase_array;
-}
-
-/* Return the length of the virtual base list of the type DCLASS. */
-
-int
-virtual_base_list_length (struct type *dclass)
-{
- int i;
- struct vbase *tmp_vbase;
-
- current_vbase_list = NULL;
- virtual_base_list_aux (dclass);
-
- for (i = 0, tmp_vbase = current_vbase_list;
- tmp_vbase != NULL;
- i++, tmp_vbase = tmp_vbase->next)
- /* no body */ ;
- return i;
-}
-
-/* Return the number of elements of the virtual base list of the type
- DCLASS, ignoring those appearing in the primary base (and its
- primary base, recursively). */
-
-int
-virtual_base_list_length_skip_primaries (struct type *dclass)
-{
- int i;
- struct vbase *tmp_vbase;
- struct type *primary;
-
- primary = TYPE_RUNTIME_PTR (dclass) ? TYPE_PRIMARY_BASE (dclass) : NULL;
-
- if (!primary)
- return virtual_base_list_length (dclass);
-
- current_vbase_list = NULL;
- virtual_base_list_aux (dclass);
-
- for (i = 0, tmp_vbase = current_vbase_list;
- tmp_vbase != NULL;
- tmp_vbase = tmp_vbase->next)
- {
- if (virtual_base_index (tmp_vbase->vbasetype, primary) >= 0)
- continue;
- i++;
- }
- return i;
-}
-
-/* Return the index (position) of type BASE, which is a virtual base
- class of DCLASS, in the latter's virtual base list. A return of -1
- indicates "not found" or a problem. */
-
-int
-virtual_base_index (struct type *base, struct type *dclass)
-{
- struct type *vbase, **vbase_list;
- int i;
-
- if ((TYPE_CODE (dclass) != TYPE_CODE_CLASS)
- || (TYPE_CODE (base) != TYPE_CODE_CLASS))
- return -1;
-
- vbase_list = virtual_base_list (dclass);
- for (i = 0, vbase = vbase_list[0];
- vbase != NULL;
- vbase = vbase_list[++i])
- if (vbase == base)
- break;
-
- xfree (vbase_list);
- return vbase ? i : -1;
-}
-
-/* Return the index (position) of type BASE, which is a virtual base
- class of DCLASS, in the latter's virtual base list. Skip over all
- bases that may appear in the virtual base list of the primary base
- class of DCLASS (recursively). A return of -1 indicates "not
- found" or a problem. */
-
-int
-virtual_base_index_skip_primaries (struct type *base,
- struct type *dclass)
-{
- struct type *vbase, **vbase_list;
- int i, j;
- struct type *primary;
-
- if ((TYPE_CODE (dclass) != TYPE_CODE_CLASS)
- || (TYPE_CODE (base) != TYPE_CODE_CLASS))
- return -1;
-
- primary = TYPE_RUNTIME_PTR (dclass) ? TYPE_PRIMARY_BASE (dclass) : NULL;
-
- vbase_list = virtual_base_list (dclass);
- for (i = 0, j = -1, vbase = vbase_list[0];
- vbase != NULL;
- vbase = vbase_list[++i])
- {
- if (!primary
- || (virtual_base_index_skip_primaries (vbase, primary) < 0))
- j++;
- if (vbase == base)
- break;
- }
- xfree (vbase_list);
- return vbase ? j : -1;
-}
-
-/* Return position of a derived class DCLASS in the list of primary
- bases starting with the remotest ancestor. Position returned is
- 0-based. */
-
-int
-class_index_in_primary_list (struct type *dclass)
-{
- struct type *pbc; /* primary base class */
-
- /* Simply recurse on primary base */
- pbc = TYPE_PRIMARY_BASE (dclass);
- if (pbc)
- return 1 + class_index_in_primary_list (pbc);
- else
- return 0;
-}
-
-/* Return a count of the number of virtual functions a type has. This
- includes all the virtual functions it inherits from its base
- classes too. */
-
-/* pai: FIXME This doesn't do the right thing: count redefined virtual
- functions only once (latest redefinition). */
-
-int
-count_virtual_fns (struct type *dclass)
-{
- int fn, oi; /* function and overloaded instance indices */
- int vfuncs; /* count to return */
-
- /* recurse on bases that can share virtual table */
- struct type *pbc = primary_base_class (dclass);
- if (pbc)
- vfuncs = count_virtual_fns (pbc);
- else
- vfuncs = 0;
-
- for (fn = 0; fn < TYPE_NFN_FIELDS (dclass); fn++)
- for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (dclass, fn); oi++)
- if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (dclass, fn), oi))
- vfuncs++;
-
- return vfuncs;
-}
\f
builtin_type->builtin_char =
init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
(TYPE_FLAG_NOSIGN
- | (gdbarch_char_signed (current_gdbarch) ?
- 0 : TYPE_FLAG_UNSIGNED)),
+ | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)),
"char", (struct objfile *) NULL);
builtin_type->builtin_true_char =
init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
"unsigned char", (struct objfile *) NULL);
builtin_type->builtin_short =
init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
0, "short", (struct objfile *) NULL);
builtin_type->builtin_unsigned_short =
init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned short",
(struct objfile *) NULL);
builtin_type->builtin_int =
init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
0, "int", (struct objfile *) NULL);
builtin_type->builtin_unsigned_int =
init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned int",
(struct objfile *) NULL);
builtin_type->builtin_long =
init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
0, "long", (struct objfile *) NULL);
builtin_type->builtin_unsigned_long =
init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long",
(struct objfile *) NULL);
builtin_type->builtin_long_long =
init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
0, "long long", (struct objfile *) NULL);
builtin_type->builtin_unsigned_long_long =
init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
+ gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long long",
(struct objfile *) NULL);
builtin_type->builtin_float
0,
"bool", (struct objfile *) NULL);
+ /* The following three are about decimal floating point types, which
+ are 32-bits, 64-bits and 128-bits respectively. */
+ builtin_type->builtin_decfloat
+ = init_type (TYPE_CODE_DECFLOAT, 32 / 8,
+ 0,
+ "_Decimal32", (struct objfile *) NULL);
+ builtin_type->builtin_decdouble
+ = init_type (TYPE_CODE_DECFLOAT, 64 / 8,
+ 0,
+ "_Decimal64", (struct objfile *) NULL);
+ builtin_type->builtin_declong
+ = init_type (TYPE_CODE_DECFLOAT, 128 / 8,
+ 0,
+ "_Decimal128", (struct objfile *) NULL);
+
/* Pointer/Address types. */
/* NOTE: on some targets, addresses and pointers are not necessarily
lookup_pointer_type (lookup_function_type (builtin_type->builtin_void));
builtin_type->builtin_core_addr =
init_type (TYPE_CODE_INT,
- gdbarch_addr_bit (current_gdbarch) / 8,
+ gdbarch_addr_bit (gdbarch) / 8,
TYPE_FLAG_UNSIGNED,
"__CORE_ADDR", (struct objfile *) NULL);
projects / external / binutils.git / blobdiff