/* Perform non-arithmetic operations on values, for GDB.
- Copyright (C) 1986-2012 Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "symtab.h"
#include "exceptions.h"
-extern int overload_debug;
+extern unsigned int overload_debug;
/* Local functions. */
static int typecmp (int staticp, int varargs, int nargs,
minus one, instead of biasing the normal case. */
return value_from_longest (type, -1);
}
- else if (code1 == TYPE_CODE_ARRAY && TYPE_VECTOR (type) && scalar)
+ else if (code1 == TYPE_CODE_ARRAY && TYPE_VECTOR (type)
+ && code2 == TYPE_CODE_ARRAY && TYPE_VECTOR (type2)
+ && TYPE_LENGTH (type) != TYPE_LENGTH (type2))
+ error (_("Cannot convert between vector values of different sizes"));
+ else if (code1 == TYPE_CODE_ARRAY && TYPE_VECTOR (type) && scalar
+ && TYPE_LENGTH (type) != TYPE_LENGTH (type2))
+ error (_("can only cast scalar to vector of same size"));
+ else if (code1 == TYPE_CODE_VOID)
{
- /* Widen the scalar to a vector. */
- struct type *eltype;
- struct value *val;
- LONGEST low_bound, high_bound;
- int i;
-
- if (!get_array_bounds (type, &low_bound, &high_bound))
- error (_("Could not determine the vector bounds"));
-
- eltype = check_typedef (TYPE_TARGET_TYPE (type));
- arg2 = value_cast (eltype, arg2);
- val = allocate_value (type);
-
- for (i = 0; i < high_bound - low_bound + 1; i++)
- {
- /* Duplicate the contents of arg2 into the destination vector. */
- memcpy (value_contents_writeable (val) + (i * TYPE_LENGTH (eltype)),
- value_contents_all (arg2), TYPE_LENGTH (eltype));
- }
- return val;
+ return value_zero (type, not_lval);
}
else if (TYPE_LENGTH (type) == TYPE_LENGTH (type2))
{
}
else if (VALUE_LVAL (arg2) == lval_memory)
return value_at_lazy (type, value_address (arg2));
- else if (code1 == TYPE_CODE_VOID)
- {
- return value_zero (type, not_lval);
- }
else
{
error (_("Invalid cast."));
struct value *parent = value_parent (val);
LONGEST offset = value_offset (val);
LONGEST num;
- int length = TYPE_LENGTH (type);
if (!value_bits_valid (val,
TARGET_CHAR_BIT * offset + value_bitpos (val),
value_bitsize (val), parent, &num))
mark_value_bytes_unavailable (val,
value_embedded_offset (val),
- length);
+ TYPE_LENGTH (type));
else
- store_signed_integer (value_contents_raw (val), length,
+ store_signed_integer (value_contents_raw (val), TYPE_LENGTH (type),
byte_order, num);
}
else if (VALUE_LVAL (val) == lval_memory)
{
CORE_ADDR addr = value_address (val);
- int length = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
+ struct type *type = check_typedef (value_enclosing_type (val));
- if (length)
+ if (TYPE_LENGTH (type))
read_value_memory (val, 0, value_stack (val),
- addr, value_contents_all_raw (val), length);
+ addr, value_contents_all_raw (val),
+ TYPE_LENGTH (type));
}
else if (VALUE_LVAL (val) == lval_register)
{
VALUE_INTERNALVAR (toval));
case lval_internalvar_component:
- set_internalvar_component (VALUE_INTERNALVAR (toval),
- value_offset (toval),
- value_bitpos (toval),
- value_bitsize (toval),
- fromval);
+ {
+ int offset = value_offset (toval);
+
+ /* Are we dealing with a bitfield?
+
+ It is important to mention that `value_parent (toval)' is
+ non-NULL iff `value_bitsize (toval)' is non-zero. */
+ if (value_bitsize (toval))
+ {
+ /* VALUE_INTERNALVAR below refers to the parent value, while
+ the offset is relative to this parent value. */
+ gdb_assert (value_parent (value_parent (toval)) == NULL);
+ offset += value_offset (value_parent (toval));
+ }
+
+ set_internalvar_component (VALUE_INTERNALVAR (toval),
+ offset,
+ value_bitpos (toval),
+ value_bitsize (toval),
+ fromval);
+ }
break;
case lval_memory:
if (deprecated_register_changed_hook)
deprecated_register_changed_hook (-1);
- observer_notify_target_changed (¤t_target);
break;
}
/* Assigning to the stack pointer, frame pointer, and other
(architecture and calling convention specific) registers may
- cause the frame cache to be out of date. Assigning to memory
+ cause the frame cache and regcache to be out of date. Assigning to memory
also can. We just do this on all assignments to registers or
memory, for simplicity's sake; I doubt the slowdown matters. */
switch (VALUE_LVAL (toval))
case lval_register:
case lval_computed:
- reinit_frame_cache ();
+ observer_notify_target_changed (¤t_target);
/* Having destroyed the frame cache, restore the selected
frame. */
}
struct value *
-address_of_variable (struct symbol *var, struct block *b)
+address_of_variable (struct symbol *var, const struct block *b)
{
struct type *type = SYMBOL_TYPE (var);
struct value *val;
}
struct value *
-value_cstring (char *ptr, int len, struct type *char_type)
+value_cstring (char *ptr, ssize_t len, struct type *char_type)
{
struct value *val;
int lowbound = current_language->string_lower_bound;
- int highbound = len / TYPE_LENGTH (char_type);
+ ssize_t highbound = len / TYPE_LENGTH (char_type);
struct type *stringtype
= lookup_array_range_type (char_type, lowbound, highbound + lowbound - 1);
string may contain embedded null bytes. */
struct value *
-value_string (char *ptr, int len, struct type *char_type)
+value_string (char *ptr, ssize_t len, struct type *char_type)
{
struct value *val;
int lowbound = current_language->string_lower_bound;
- int highbound = len / TYPE_LENGTH (char_type);
+ ssize_t highbound = len / TYPE_LENGTH (char_type);
struct type *stringtype
= lookup_string_range_type (char_type, lowbound, highbound + lowbound - 1);
return val;
}
-struct value *
-value_bitstring (char *ptr, int len, struct type *index_type)
-{
- struct value *val;
- struct type *domain_type
- = create_range_type (NULL, index_type, 0, len - 1);
- struct type *type = create_set_type (NULL, domain_type);
-
- TYPE_CODE (type) = TYPE_CODE_BITSTRING;
- val = allocate_value (type);
- memcpy (value_contents_raw (val), ptr, TYPE_LENGTH (type));
- return val;
-}
\f
/* See if we can pass arguments in T2 to a function which takes
arguments of types T1. T1 is a list of NARGS arguments, and T2 is
for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
{
int base_offset;
- int skip = 0;
int this_offset;
if (BASETYPE_VIA_VIRTUAL (type, i))
if (offset < 0 || offset >= TYPE_LENGTH (type))
{
- gdb_byte *tmp = alloca (TYPE_LENGTH (baseclass));
- CORE_ADDR address = value_address (*arg1p);
+ gdb_byte *tmp;
+ struct cleanup *back_to;
+ CORE_ADDR address;
+
+ tmp = xmalloc (TYPE_LENGTH (baseclass));
+ back_to = make_cleanup (xfree, tmp);
+ address = value_address (*arg1p);
if (target_read_memory (address + offset,
tmp, TYPE_LENGTH (baseclass)) != 0)
address + offset);
base_valaddr = value_contents_for_printing (base_val);
this_offset = 0;
+ do_cleanups (back_to);
}
else
{
/* Given an array of arguments (ARGS) (which includes an
entry for "this" in the case of C++ methods), the number of
- arguments NARGS, the NAME of a function whether it's a method or
- not (METHOD), and the degree of laxness (LAX) in conforming to
- overload resolution rules in ANSI C++, find the best function that
- matches on the argument types according to the overload resolution
- rules.
+ arguments NARGS, the NAME of a function, and whether it's a method or
+ not (METHOD), find the best function that matches on the argument types
+ according to the overload resolution rules.
METHOD can be one of three values:
NON_METHOD for non-member functions.
int
find_overload_match (struct value **args, int nargs,
const char *name, enum oload_search_type method,
- int lax, struct value **objp, struct symbol *fsym,
+ struct value **objp, struct symbol *fsym,
struct value **valp, struct symbol **symp,
int *staticp, const int no_adl)
{
return 0;
}
-/* Given TYPE, a structure/union,
- return 1 if the component named NAME from the ultimate target
- structure/union is defined, otherwise, return 0. */
-
-int
-check_field (struct type *type, const char *name)
-{
- int i;
-
- /* The type may be a stub. */
- CHECK_TYPEDEF (type);
-
- for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
- {
- const char *t_field_name = TYPE_FIELD_NAME (type, i);
-
- if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
- return 1;
- }
-
- /* C++: If it was not found as a data field, then try to return it
- as a pointer to a method. */
-
- for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
- {
- if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0)
- return 1;
- }
-
- for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
- if (check_field (TYPE_BASECLASS (type, i), name))
- return 1;
-
- return 0;
-}
-
/* C++: Given an aggregate type CURTYPE, and a member name NAME,
return the appropriate member (or the address of the member, if
WANT_ADDRESS). This function is used to resolve user expressions
array_type = check_typedef (value_type (array));
if (TYPE_CODE (array_type) != TYPE_CODE_ARRAY
- && TYPE_CODE (array_type) != TYPE_CODE_STRING
- && TYPE_CODE (array_type) != TYPE_CODE_BITSTRING)
+ && TYPE_CODE (array_type) != TYPE_CODE_STRING)
error (_("cannot take slice of non-array"));
range_type = TYPE_INDEX_TYPE (array_type);
TYPE_TARGET_TYPE (range_type),
lowbound,
lowbound + length - 1);
- if (TYPE_CODE (array_type) == TYPE_CODE_BITSTRING)
- {
- int i;
-
- slice_type = create_set_type ((struct type *) NULL,
- slice_range_type);
- TYPE_CODE (slice_type) = TYPE_CODE_BITSTRING;
- slice = value_zero (slice_type, not_lval);
- for (i = 0; i < length; i++)
- {
- int element = value_bit_index (array_type,
- value_contents (array),
- lowbound + i);
-
- if (element < 0)
- error (_("internal error accessing bitstring"));
- else if (element > 0)
- {
- int j = i % TARGET_CHAR_BIT;
-
- if (gdbarch_bits_big_endian (get_type_arch (array_type)))
- j = TARGET_CHAR_BIT - 1 - j;
- value_contents_raw (slice)[i / TARGET_CHAR_BIT] |= (1 << j);
- }
- }
- /* We should set the address, bitssize, and bitspos, so the
- slice can be used on the LHS, but that may require extensions
- to value_assign. For now, just leave as a non_lval.
- FIXME. */
- }
- else
{
struct type *element_type = TYPE_TARGET_TYPE (array_type);
LONGEST offset =
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