/* Perform non-arithmetic operations on values, for GDB.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ 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.
struct type *curtype,
char *name,
struct type *intype,
+ int want_address,
enum noside noside);
static struct value *value_namespace_elt (const struct type *curtype,
- char *name,
+ char *name, int want_address,
enum noside noside);
static struct value *value_maybe_namespace_elt (const struct type *curtype,
- char *name,
+ char *name, int want_address,
enum noside noside);
static CORE_ADDR allocate_space_in_inferior (int);
}
/* No superclass found, just change the pointer type. */
+ arg2 = value_copy (arg2);
deprecated_set_value_type (arg2, type);
arg2 = value_change_enclosing_type (arg2, type);
set_value_pointed_to_offset (arg2, 0); /* pai: chk_val */
return value_from_double (type, value_as_double (arg2));
else if ((code1 == TYPE_CODE_INT || code1 == TYPE_CODE_ENUM
|| code1 == TYPE_CODE_RANGE)
- && (scalar || code2 == TYPE_CODE_PTR))
+ && (scalar || code2 == TYPE_CODE_PTR
+ || code2 == TYPE_CODE_MEMBERPTR))
{
LONGEST longest;
- if (deprecated_hp_som_som_object_present /* if target compiled by HP aCC */
- && (code2 == TYPE_CODE_PTR))
+ /* If target compiled by HP aCC. */
+ if (deprecated_hp_som_som_object_present
+ && code2 == TYPE_CODE_MEMBERPTR)
{
unsigned int *ptr;
struct value *retvalp;
- switch (TYPE_CODE (TYPE_TARGET_TYPE (type2)))
- {
- /* With HP aCC, pointers to data members have a bias */
- case TYPE_CODE_MEMBER:
- retvalp = value_from_longest (type, value_as_long (arg2));
- /* force evaluation */
- ptr = (unsigned int *) value_contents (retvalp);
- *ptr &= ~0x20000000; /* zap 29th bit to remove bias */
- return retvalp;
-
- /* While pointers to methods don't really point to a function */
- case TYPE_CODE_METHOD:
- error (_("Pointers to methods not supported with HP aCC"));
-
- default:
- break; /* fall out and go to normal handling */
- }
+ /* With HP aCC, pointers to data members have a bias. */
+ retvalp = value_from_longest (type, value_as_long (arg2));
+ /* force evaluation */
+ ptr = (unsigned int *) value_contents (retvalp);
+ *ptr &= ~0x20000000; /* zap 29th bit to remove bias */
+ return retvalp;
}
/* When we cast pointers to integers, we mustn't use
}
return value_from_longest (type, longest);
}
+ else if (code1 == TYPE_CODE_METHODPTR && code2 == TYPE_CODE_INT
+ && value_as_long (arg2) == 0)
+ {
+ struct value *result = allocate_value (type);
+ cplus_make_method_ptr (value_contents_writeable (result), 0, 0);
+ return result;
+ }
+ else if (code1 == TYPE_CODE_MEMBERPTR && code2 == TYPE_CODE_INT
+ && value_as_long (arg2) == 0)
+ {
+ /* The Itanium C++ ABI represents NULL pointers to members as
+ minus one, instead of biasing the normal case. */
+ return value_from_longest (type, -1);
+ }
else if (TYPE_LENGTH (type) == TYPE_LENGTH (type2))
{
if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_PTR)
return value_cast_pointers (type, arg2);
+ arg2 = value_copy (arg2);
deprecated_set_value_type (arg2, type);
arg2 = value_change_enclosing_type (arg2, type);
set_value_pointed_to_offset (arg2, 0); /* pai: chk_val */
/* Since modifying a register can trash the frame chain, and modifying memory
can trash the frame cache, we save the old frame and then restore the new
frame afterwards. */
- old_frame = get_frame_id (deprecated_selected_frame);
+ old_frame = get_frame_id (deprecated_safe_get_selected_frame ());
switch (VALUE_LVAL (toval))
{
if (!frame)
error (_("Value being assigned to is no longer active."));
- if (VALUE_LVAL (toval) == lval_register
- && CONVERT_REGISTER_P (VALUE_REGNUM (toval), type))
+ if (CONVERT_REGISTER_P (VALUE_REGNUM (toval), type))
{
/* If TOVAL is a special machine register requiring
conversion of program values to a special raw format. */
}
else
{
- /* TOVAL is stored in a series of registers in the frame
- specified by the structure. Copy that value out,
- modify it, and copy it back in. */
- int amount_copied;
- int amount_to_copy;
- gdb_byte *buffer;
- int reg_offset;
- int byte_offset;
- int regno;
-
- /* Locate the first register that falls in the value that
- needs to be transfered. Compute the offset of the
- value in that register. */
- {
- int offset;
- for (reg_offset = value_reg, offset = 0;
- offset + register_size (current_gdbarch, reg_offset) <= value_offset (toval);
- reg_offset++);
- byte_offset = value_offset (toval) - offset;
- }
-
- /* Compute the number of register aligned values that need
- to be copied. */
- if (value_bitsize (toval))
- amount_to_copy = byte_offset + 1;
- else
- amount_to_copy = byte_offset + TYPE_LENGTH (type);
-
- /* And a bounce buffer. Be slightly over generous. */
- buffer = alloca (amount_to_copy + MAX_REGISTER_SIZE);
-
- /* Copy it in. */
- for (regno = reg_offset, amount_copied = 0;
- amount_copied < amount_to_copy;
- amount_copied += register_size (current_gdbarch, regno), regno++)
- frame_register_read (frame, regno, buffer + amount_copied);
-
- /* Modify what needs to be modified. */
if (value_bitsize (toval))
- modify_field (buffer + byte_offset,
- value_as_long (fromval),
- value_bitpos (toval), value_bitsize (toval));
- else
- memcpy (buffer + byte_offset, value_contents (fromval),
- TYPE_LENGTH (type));
+ {
+ int changed_len;
+ gdb_byte buffer[sizeof (LONGEST)];
+
+ changed_len = (value_bitpos (toval)
+ + value_bitsize (toval)
+ + HOST_CHAR_BIT - 1)
+ / HOST_CHAR_BIT;
- /* Copy it out. */
- for (regno = reg_offset, amount_copied = 0;
- amount_copied < amount_to_copy;
- amount_copied += register_size (current_gdbarch, regno), regno++)
- put_frame_register (frame, regno, buffer + amount_copied);
+ if (changed_len > (int) sizeof (LONGEST))
+ error (_("Can't handle bitfields which don't fit in a %d bit word."),
+ (int) sizeof (LONGEST) * HOST_CHAR_BIT);
+ get_frame_register_bytes (frame, value_reg,
+ value_offset (toval),
+ changed_len, buffer);
+
+ modify_field (buffer, value_as_long (fromval),
+ value_bitpos (toval), value_bitsize (toval));
+
+ put_frame_register_bytes (frame, value_reg,
+ value_offset (toval),
+ changed_len, buffer);
+ }
+ else
+ {
+ put_frame_register_bytes (frame, value_reg,
+ value_offset (toval),
+ TYPE_LENGTH (type),
+ value_contents (fromval));
+ }
}
+
if (deprecated_register_changed_hook)
deprecated_register_changed_hook (-1);
observer_notify_target_changed (¤t_target);
base_type = check_typedef (value_type (arg1));
- if (TYPE_CODE (base_type) == TYPE_CODE_MEMBER)
- error (_("not implemented: member types in value_ind"));
-
/* Allow * on an integer so we can cast it to whatever we want.
This returns an int, which seems like the most C-like thing
to do. "long long" variables are rare enough that
BUILTIN_TYPE_LONGEST would seem to be a mistake. */
if (TYPE_CODE (base_type) == TYPE_CODE_INT)
return value_at_lazy (builtin_type_int,
- (CORE_ADDR) value_as_long (arg1));
+ (CORE_ADDR) value_as_address (arg1));
else if (TYPE_CODE (base_type) == TYPE_CODE_PTR)
{
struct type *enc_type;
/* Get the real type of the enclosing object */
enc_type = check_typedef (value_enclosing_type (arg1));
enc_type = TYPE_TARGET_TYPE (enc_type);
- /* Retrieve the enclosing object pointed to */
- arg2 = value_at_lazy (enc_type, (value_as_address (arg1)
- - value_pointed_to_offset (arg1)));
+
+ if (TYPE_CODE (check_typedef (enc_type)) == TYPE_CODE_FUNC
+ || TYPE_CODE (check_typedef (enc_type)) == TYPE_CODE_METHOD)
+ /* For functions, go through find_function_addr, which knows
+ how to handle function descriptors. */
+ arg2 = value_at_lazy (enc_type, find_function_addr (arg1, NULL));
+ else
+ /* Retrieve the enclosing object pointed to */
+ arg2 = value_at_lazy (enc_type, (value_as_address (arg1)
+ - value_pointed_to_offset (arg1)));
+
/* Re-adjust type */
deprecated_set_value_type (arg2, TYPE_TARGET_TYPE (base_type));
/* Add embedding info */
t = check_typedef (value_type (*argp));
}
- if (TYPE_CODE (t) == TYPE_CODE_MEMBER)
- error (_("not implemented: member type in value_struct_elt"));
-
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
error (_("Attempt to extract a component of a value that is not a %s."), err);
t = check_typedef (value_type (*argp));
}
- if (TYPE_CODE (t) == TYPE_CODE_MEMBER)
- error (_("Not implemented: member type in value_find_oload_lis"));
-
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
error (_("Attempt to extract a component of a value that is not a struct or union"));
t = TYPE_TARGET_TYPE (t);
}
- if (TYPE_CODE (t) == TYPE_CODE_MEMBER)
- error (_("not implemented: member type in check_field"));
-
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
error (_("Internal error: `this' is not an aggregate"));
}
/* C++: Given an aggregate type CURTYPE, and a member name NAME,
- return the appropriate member. This function is used to resolve
- user expressions of the form "DOMAIN::NAME". For more details on
- what happens, see the comment before
- value_struct_elt_for_reference. */
+ return the appropriate member (or the address of the member, if
+ WANT_ADDRESS). This function is used to resolve user expressions
+ of the form "DOMAIN::NAME". For more details on what happens, see
+ the comment before value_struct_elt_for_reference. */
struct value *
value_aggregate_elt (struct type *curtype,
- char *name,
+ char *name, int want_address,
enum noside noside)
{
switch (TYPE_CODE (curtype))
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
return value_struct_elt_for_reference (curtype, 0, curtype, name, NULL,
- noside);
+ want_address, noside);
case TYPE_CODE_NAMESPACE:
- return value_namespace_elt (curtype, name, noside);
+ return value_namespace_elt (curtype, name, want_address, noside);
default:
internal_error (__FILE__, __LINE__,
_("non-aggregate type in value_aggregate_elt"));
static struct value *
value_struct_elt_for_reference (struct type *domain, int offset,
struct type *curtype, char *name,
- struct type *intype,
+ struct type *intype, int want_address,
enum noside noside)
{
struct type *t = curtype;
int i;
- struct value *v;
+ struct value *v, *result;
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
if (v == NULL)
error (_("static field %s has been optimized out"),
name);
+ if (want_address)
+ v = value_addr (v);
return v;
}
if (TYPE_FIELD_PACKED (t, i))
error (_("pointers to bitfield members not allowed"));
- return value_from_longest
- (lookup_reference_type (lookup_member_type (TYPE_FIELD_TYPE (t, i),
- domain)),
- offset + (LONGEST) (TYPE_FIELD_BITPOS (t, i) >> 3));
+ if (want_address)
+ return value_from_longest
+ (lookup_memberptr_type (TYPE_FIELD_TYPE (t, i), domain),
+ offset + (LONGEST) (TYPE_FIELD_BITPOS (t, i) >> 3));
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return allocate_value (TYPE_FIELD_TYPE (t, i));
+ else
+ error (_("Cannot reference non-static field \"%s\""), name);
}
}
else
j = 0;
+ if (TYPE_FN_FIELD_STATIC_P (f, j))
+ {
+ struct symbol *s = lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, j),
+ 0, VAR_DOMAIN, 0, NULL);
+ if (s == NULL)
+ return NULL;
+
+ if (want_address)
+ return value_addr (read_var_value (s, 0));
+ else
+ return read_var_value (s, 0);
+ }
+
if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
{
- return value_from_longest
- (lookup_reference_type
- (lookup_member_type (TYPE_FN_FIELD_TYPE (f, j),
- domain)),
- (LONGEST) METHOD_PTR_FROM_VOFFSET (TYPE_FN_FIELD_VOFFSET (f, j)));
+ if (want_address)
+ {
+ result = allocate_value
+ (lookup_methodptr_type (TYPE_FN_FIELD_TYPE (f, j)));
+ cplus_make_method_ptr (value_contents_writeable (result),
+ TYPE_FN_FIELD_VOFFSET (f, j), 1);
+ }
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return allocate_value (TYPE_FN_FIELD_TYPE (f, j));
+ else
+ error (_("Cannot reference virtual member function \"%s\""),
+ name);
}
else
{
struct symbol *s = lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, j),
0, VAR_DOMAIN, 0, NULL);
if (s == NULL)
- {
- v = 0;
- }
+ return NULL;
+
+ v = read_var_value (s, 0);
+ if (!want_address)
+ result = v;
else
{
- v = read_var_value (s, 0);
-#if 0
- VALUE_TYPE (v) = lookup_reference_type
- (lookup_member_type (TYPE_FN_FIELD_TYPE (f, j),
- domain));
-#endif
+ result = allocate_value (lookup_methodptr_type (TYPE_FN_FIELD_TYPE (f, j)));
+ cplus_make_method_ptr (value_contents_writeable (result),
+ VALUE_ADDRESS (v), 0);
}
- return v;
}
+ return result;
}
}
for (i = TYPE_N_BASECLASSES (t) - 1; i >= 0; i--)
offset + base_offset,
TYPE_BASECLASS (t, i),
name,
- intype,
+ intype, want_address,
noside);
if (v)
return v;
it up that way; this (frequently) works for types nested inside
classes. */
- return value_maybe_namespace_elt (curtype, name, noside);
+ return value_maybe_namespace_elt (curtype, name, want_address, noside);
}
/* C++: Return the member NAME of the namespace given by the type
static struct value *
value_namespace_elt (const struct type *curtype,
- char *name,
+ char *name, int want_address,
enum noside noside)
{
struct value *retval = value_maybe_namespace_elt (curtype, name,
- noside);
+ want_address, noside);
if (retval == NULL)
error (_("No symbol \"%s\" in namespace \"%s\"."), name,
static struct value *
value_maybe_namespace_elt (const struct type *curtype,
- char *name,
+ char *name, int want_address,
enum noside noside)
{
const char *namespace_name = TYPE_TAG_NAME (curtype);
struct symbol *sym;
+ struct value *result;
sym = cp_lookup_symbol_namespace (namespace_name, name, NULL,
get_selected_block (0), VAR_DOMAIN,
return NULL;
else if ((noside == EVAL_AVOID_SIDE_EFFECTS)
&& (SYMBOL_CLASS (sym) == LOC_TYPEDEF))
- return allocate_value (SYMBOL_TYPE (sym));
+ result = allocate_value (SYMBOL_TYPE (sym));
else
- return value_of_variable (sym, get_selected_block (0));
+ result = value_of_variable (sym, get_selected_block (0));
+
+ if (result && want_address)
+ result = value_addr (result);
+
+ return result;
}
/* Given a pointer value V, find the real (RTTI) type
struct symbol *func, *sym;
struct block *b;
struct value * ret;
+ struct frame_info *frame;
- if (deprecated_selected_frame == 0)
+ if (complain)
+ frame = get_selected_frame (_("no frame selected"));
+ else
{
- if (complain)
- error (_("no frame selected"));
- else
+ frame = deprecated_safe_get_selected_frame ();
+ if (frame == 0)
return 0;
}
- func = get_frame_function (deprecated_selected_frame);
+ func = get_frame_function (frame);
if (!func)
{
if (complain)
return NULL;
}
- ret = read_var_value (sym, deprecated_selected_frame);
+ ret = read_var_value (sym, frame);
if (ret == 0 && complain)
error (_("`%s' argument unreadable"), name);
return ret;
projects / deliverable / binutils-gdb.git / blobdiff