FreeChainXenon/binutils-gdb
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2001-11-14 Michael Snyder <msnyder@redhat.com>

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Add address space identifiers to expression language for types.
	* c-exp.y (space_identifier, cv_with_space_id,
	const_or_volatile_or_space_identifier_noopt,
	const_or_volatile_or_space_identifier): New terminals.
	(ptype): Accept const_or_volatile_or_space_identifier.
	(typebase): Accept const_or_volatile_or_space_identifier.
	* c-typeprint.c (c_type_print_cv_qualifier): Rename to
	c_type_print_modifier.  Handle address space modified types.
	* gdbtypes.h (TYPE_FLAG_CODE_SPACE, TYPE_FLAG_DATA_SPACE):
	New type flags.
	(struct type): Add new field as_type for addr-space qualified types.
	(TYPE_AS_TYPE): New macro, retrieves the chain of types that are
	identical to this one except for address-space qualification.
	* gdbtypes.c (alloc_type): Initialize new field 'as_type'.
	(address_space_name_to_int): New function.
	(address_space_int_to_name): New function.
	(make_type_with_address_space): New function.
	(make_cv_type): Handle as_type field of new struct type object.
	* parse.c (check_type_stack_depth): New function.
	(push_type_address_space): New function.
	(follow_types): Handle types with address-space qualifier.
	* parser-defs.h (enum type_pieces): Add enum tp_space_identifier.
This commit is contained in:
Michael Snyder 2001-11-15 01:55:59 +00:00
parent 73d074b4e2
commit 47663de598
7 changed files with 242 additions and 46 deletions
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69
gdb/gdbtypes.c
View file

@ -146,6 +146,7 @@ alloc_type (struct objfile *objfile)
TYPE_OBJFILE (type) = objfile;
TYPE_VPTR_FIELDNO (type) = -1;
TYPE_CV_TYPE (type) = type; /* chain back to itself */
TYPE_AS_TYPE (type) = type; /* ditto */
return (type);
}
@ -323,6 +324,73 @@ lookup_function_type (struct type *type)
return make_function_type (type, (struct type **) 0);
}
/* Identify address space identifier by name --
return the integer flag defined in gdbtypes.h. */
extern int
address_space_name_to_int (char *space_identifier)
{
/* Check for known address space delimiters. */
if (!strcmp (space_identifier, "code"))
return TYPE_FLAG_CODE_SPACE;
else if (!strcmp (space_identifier, "data"))
return TYPE_FLAG_DATA_SPACE;
else
error ("Unknown address space specifier: \"%s\"", space_identifier);
}
/* Identify address space identifier by integer flag as defined in
gdbtypes.h -- return the string version of the adress space name. */
extern char *
address_space_int_to_name (int space_flag)
{
if (space_flag & TYPE_FLAG_CODE_SPACE)
return "code";
else if (space_flag & TYPE_FLAG_DATA_SPACE)
return "data";
else
return NULL;
}
/* Make an address-space-delimited variant of a type -- a type that
is identical to the one supplied except that it has an address
space attribute attached to it (such as "code" or "data").
This is for Harvard architectures. */
struct type *
make_type_with_address_space (struct type *type, int space_flag)
{
struct type *ntype;
ntype = type;
do {
if ((ntype->flags & space_flag) != 0)
return ntype;
ntype = TYPE_AS_TYPE (ntype);
} while (ntype != type);
/* Create a new, duplicate type. */
ntype = alloc_type (TYPE_OBJFILE (type));
/* Copy original type. */
memcpy ((char *) ntype, (char *) type, sizeof (struct type));
/* Pointers or references to the original type are not relevant to
the new type; but if the original type is a pointer, the new type
points to the same thing (so TYPE_TARGET_TYPE remains unchanged). */
TYPE_POINTER_TYPE (ntype) = (struct type *) 0;
TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0;
TYPE_CV_TYPE (ntype) = ntype;
/* Chain the new address-space-specific type to the old type. */
ntype->as_type = type->as_type;
type->as_type = ntype;
/* Now set the address-space flag, and return the new type. */
ntype->flags |= space_flag;
return ntype;
}
/* Make a "c-v" variant of a type -- a type that is identical to the
one supplied except that it may have const or volatile attributes
@ -380,6 +448,7 @@ make_cv_type (int cnst, int voltl, struct type *type, struct type **typeptr)
/* But zero out fields that shouldn't be copied */
TYPE_POINTER_TYPE (ntype) = (struct type *) 0; /* Need new pointer kind */
TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; /* Need new referene kind */
TYPE_AS_TYPE (ntype) = ntype; /* Need new address-space kind. */
/* Note: TYPE_TARGET_TYPE can be left as is */
/* Set flags appropriately */