/* Evaluate expressions for GDB.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008,
- 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-2014 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_string.h"
+#include <string.h>
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "gdb_obstack.h"
#include "objfiles.h"
#include "python/python.h"
-#include "wrapper.h"
#include "gdb_assert.h"
static struct value *evaluate_subexp_for_address (struct expression *,
int *, enum noside);
-static char *get_label (struct expression *, int *);
-
static struct value *evaluate_struct_tuple (struct value *,
struct expression *, int *,
enum noside, int);
and return the result as a number. */
CORE_ADDR
-parse_and_eval_address (char *exp)
+parse_and_eval_address (const char *exp)
{
struct expression *expr = parse_expression (exp);
CORE_ADDR addr;
/* Like parse_and_eval_address, but treats the value of the expression
as an integer, not an address, returns a LONGEST, not a CORE_ADDR. */
LONGEST
-parse_and_eval_long (char *exp)
+parse_and_eval_long (const char *exp)
{
struct expression *expr = parse_expression (exp);
LONGEST retval;
}
struct value *
-parse_and_eval (char *exp)
+parse_and_eval (const char *exp)
{
struct expression *expr = parse_expression (exp);
struct value *val;
EXPP is advanced to point to the comma. */
struct value *
-parse_to_comma_and_eval (char **expp)
+parse_to_comma_and_eval (const char **expp)
{
- struct expression *expr = parse_exp_1 (expp, (struct block *) 0, 1);
+ struct expression *expr = parse_exp_1 (expp, 0, (struct block *) 0, 1);
struct value *val;
struct cleanup *old_chain =
make_cleanup (free_current_contents, &expr);
in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does
not need them.
- If a memory error occurs while evaluating the expression, *RESULTP will
- be set to NULL. *RESULTP may be a lazy value, if the result could
- not be read from memory. It is used to determine whether a value
- is user-specified (we should watch the whole value) or intermediate
+ If PRESERVE_ERRORS is true, then exceptions are passed through.
+ Otherwise, if PRESERVE_ERRORS is false, then if a memory error
+ occurs while evaluating the expression, *RESULTP will be set to
+ NULL. *RESULTP may be a lazy value, if the result could not be
+ read from memory. It is used to determine whether a value is
+ user-specified (we should watch the whole value) or intermediate
(we should watch only the bit used to locate the final value).
If the final value, or any intermediate value, could not be read
void
fetch_subexp_value (struct expression *exp, int *pc, struct value **valp,
- struct value **resultp, struct value **val_chain)
+ struct value **resultp, struct value **val_chain,
+ int preserve_errors)
{
struct value *mark, *new_mark, *result;
volatile struct gdb_exception ex;
}
if (ex.reason < 0)
{
- /* Ignore memory errors, we want watchpoints pointing at
+ /* Ignore memory errors if we want watchpoints pointing at
inaccessible memory to still be created; otherwise, throw the
error to some higher catcher. */
switch (ex.error)
{
case MEMORY_ERROR:
- break;
+ if (!preserve_errors)
+ break;
default:
throw_exception (ex);
break;
/* Make sure it's not lazy, so that after the target stops again we
have a non-lazy previous value to compare with. */
- if (result != NULL
- && (!value_lazy (result) || gdb_value_fetch_lazy (result)))
- *valp = result;
+ if (result != NULL)
+ {
+ if (!value_lazy (result))
+ *valp = result;
+ else
+ {
+ volatile struct gdb_exception except;
+
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ value_fetch_lazy (result);
+ *valp = result;
+ }
+ }
+ }
if (val_chain)
{
return result;
}
-/* If the next expression is an OP_LABELED, skips past it,
- returning the label. Otherwise, does nothing and returns NULL. */
-
-static char *
-get_label (struct expression *exp, int *pos)
-{
- if (exp->elts[*pos].opcode == OP_LABELED)
- {
- int pc = (*pos)++;
- char *name = &exp->elts[pc + 2].string;
- int tem = longest_to_int (exp->elts[pc + 1].longconst);
-
- (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
- return name;
- }
- else
- return NULL;
-}
-
-/* This function evaluates tuples (in (the deleted) Chill) or
- brace-initializers (in C/C++) for structure types. */
+/* This function evaluates brace-initializers (in C/C++) for
+ structure types. */
static struct value *
evaluate_struct_tuple (struct value *struct_val,
int *pos, enum noside noside, int nargs)
{
struct type *struct_type = check_typedef (value_type (struct_val));
- struct type *substruct_type = struct_type;
struct type *field_type;
int fieldno = -1;
- int variantno = -1;
- int subfieldno = -1;
while (--nargs >= 0)
{
- int pc = *pos;
struct value *val = NULL;
- int nlabels = 0;
int bitpos, bitsize;
bfd_byte *addr;
- /* Skip past the labels, and count them. */
- while (get_label (exp, pos) != NULL)
- nlabels++;
-
- do
- {
- char *label = get_label (exp, &pc);
-
- if (label)
- {
- for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type);
- fieldno++)
- {
- char *field_name = TYPE_FIELD_NAME (struct_type, fieldno);
-
- if (field_name != NULL && strcmp (field_name, label) == 0)
- {
- variantno = -1;
- subfieldno = fieldno;
- substruct_type = struct_type;
- goto found;
- }
- }
- for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type);
- fieldno++)
- {
- char *field_name = TYPE_FIELD_NAME (struct_type, fieldno);
-
- field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
- if ((field_name == 0 || *field_name == '\0')
- && TYPE_CODE (field_type) == TYPE_CODE_UNION)
- {
- variantno = 0;
- for (; variantno < TYPE_NFIELDS (field_type);
- variantno++)
- {
- substruct_type
- = TYPE_FIELD_TYPE (field_type, variantno);
- if (TYPE_CODE (substruct_type) == TYPE_CODE_STRUCT)
- {
- for (subfieldno = 0;
- subfieldno < TYPE_NFIELDS (substruct_type);
- subfieldno++)
- {
- if (strcmp(TYPE_FIELD_NAME (substruct_type,
- subfieldno),
- label) == 0)
- {
- goto found;
- }
- }
- }
- }
- }
- }
- error (_("there is no field named %s"), label);
- found:
- ;
- }
- else
- {
- /* Unlabelled tuple element - go to next field. */
- if (variantno >= 0)
- {
- subfieldno++;
- if (subfieldno >= TYPE_NFIELDS (substruct_type))
- {
- variantno = -1;
- substruct_type = struct_type;
- }
- }
- if (variantno < 0)
- {
- fieldno++;
- /* Skip static fields. */
- while (fieldno < TYPE_NFIELDS (struct_type)
- && field_is_static (&TYPE_FIELD (struct_type,
- fieldno)))
- fieldno++;
- subfieldno = fieldno;
- if (fieldno >= TYPE_NFIELDS (struct_type))
- error (_("too many initializers"));
- field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
- if (TYPE_CODE (field_type) == TYPE_CODE_UNION
- && TYPE_FIELD_NAME (struct_type, fieldno)[0] == '0')
- error (_("don't know which variant you want to set"));
- }
- }
+ fieldno++;
+ /* Skip static fields. */
+ while (fieldno < TYPE_NFIELDS (struct_type)
+ && field_is_static (&TYPE_FIELD (struct_type,
+ fieldno)))
+ fieldno++;
+ if (fieldno >= TYPE_NFIELDS (struct_type))
+ error (_("too many initializers"));
+ field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
+ if (TYPE_CODE (field_type) == TYPE_CODE_UNION
+ && TYPE_FIELD_NAME (struct_type, fieldno)[0] == '0')
+ error (_("don't know which variant you want to set"));
+
+ /* Here, struct_type is the type of the inner struct,
+ while substruct_type is the type of the inner struct.
+ These are the same for normal structures, but a variant struct
+ contains anonymous union fields that contain substruct fields.
+ The value fieldno is the index of the top-level (normal or
+ anonymous union) field in struct_field, while the value
+ subfieldno is the index of the actual real (named inner) field
+ in substruct_type. */
+
+ field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
+ if (val == 0)
+ val = evaluate_subexp (field_type, exp, pos, noside);
+
+ /* Now actually set the field in struct_val. */
+
+ /* Assign val to field fieldno. */
+ if (value_type (val) != field_type)
+ val = value_cast (field_type, val);
+
+ bitsize = TYPE_FIELD_BITSIZE (struct_type, fieldno);
+ bitpos = TYPE_FIELD_BITPOS (struct_type, fieldno);
+ addr = value_contents_writeable (struct_val) + bitpos / 8;
+ if (bitsize)
+ modify_field (struct_type, addr,
+ value_as_long (val), bitpos % 8, bitsize);
+ else
+ memcpy (addr, value_contents (val),
+ TYPE_LENGTH (value_type (val)));
- /* Here, struct_type is the type of the inner struct,
- while substruct_type is the type of the inner struct.
- These are the same for normal structures, but a variant struct
- contains anonymous union fields that contain substruct fields.
- The value fieldno is the index of the top-level (normal or
- anonymous union) field in struct_field, while the value
- subfieldno is the index of the actual real (named inner) field
- in substruct_type. */
-
- field_type = TYPE_FIELD_TYPE (substruct_type, subfieldno);
- if (val == 0)
- val = evaluate_subexp (field_type, exp, pos, noside);
-
- /* Now actually set the field in struct_val. */
-
- /* Assign val to field fieldno. */
- if (value_type (val) != field_type)
- val = value_cast (field_type, val);
-
- bitsize = TYPE_FIELD_BITSIZE (substruct_type, subfieldno);
- bitpos = TYPE_FIELD_BITPOS (struct_type, fieldno);
- if (variantno >= 0)
- bitpos += TYPE_FIELD_BITPOS (substruct_type, subfieldno);
- addr = value_contents_writeable (struct_val) + bitpos / 8;
- if (bitsize)
- modify_field (struct_type, addr,
- value_as_long (val), bitpos % 8, bitsize);
- else
- memcpy (addr, value_contents (val),
- TYPE_LENGTH (value_type (val)));
- }
- while (--nlabels > 0);
}
return struct_val;
}
static struct type *
make_params (int num_types, struct type **param_types)
{
- struct type *type = XZALLOC (struct type);
- TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type);
+ struct type *type = XCNEW (struct type);
+ TYPE_MAIN_TYPE (type) = XCNEW (struct main_type);
TYPE_LENGTH (type) = 1;
TYPE_CODE (type) = TYPE_CODE_METHOD;
TYPE_VPTR_FIELDNO (type) = -1;
TYPE_CHAIN (type) = type;
+ if (num_types > 0)
+ {
+ if (param_types[num_types - 1] == NULL)
+ {
+ --num_types;
+ TYPE_VARARGS (type) = 1;
+ }
+ else if (TYPE_CODE (check_typedef (param_types[num_types - 1]))
+ == TYPE_CODE_VOID)
+ {
+ --num_types;
+ /* Caller should have ensured this. */
+ gdb_assert (num_types == 0);
+ TYPE_PROTOTYPED (type) = 1;
+ }
+ }
+
TYPE_NFIELDS (type) = num_types;
TYPE_FIELDS (type) = (struct field *)
TYPE_ZALLOC (type, sizeof (struct field) * num_types);
struct type *type;
int nargs;
struct value **argvec;
- int upper, lower;
int code;
int ix;
long mem_offset;
return ret;
}
+ case OP_VAR_ENTRY_VALUE:
+ (*pos) += 2;
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+
+ {
+ struct symbol *sym = exp->elts[pc + 1].symbol;
+ struct frame_info *frame;
+
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return value_zero (SYMBOL_TYPE (sym), not_lval);
+
+ if (SYMBOL_COMPUTED_OPS (sym) == NULL
+ || SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry == NULL)
+ error (_("Symbol \"%s\" does not have any specific entry value"),
+ SYMBOL_PRINT_NAME (sym));
+
+ frame = get_selected_frame (NULL);
+ return SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry (sym, frame);
+ }
+
case OP_LAST:
(*pos) += 2;
return
}
return value_nsstring (exp->gdbarch, &exp->elts[pc + 2].string, tem + 1);
- case OP_BITSTRING:
- tem = longest_to_int (exp->elts[pc + 1].longconst);
- (*pos)
- += 3 + BYTES_TO_EXP_ELEM ((tem + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT);
- if (noside == EVAL_SKIP)
- goto nosideret;
- return value_bitstring (&exp->elts[pc + 2].string, tem,
- builtin_type (exp->gdbarch)->builtin_int);
- break;
-
case OP_ARRAY:
(*pos) += 3;
tem2 = longest_to_int (exp->elts[pc + 1].longconst);
return value_slice (array, lowbound, upper - lowbound + 1);
}
- case TERNOP_SLICE_COUNT:
- {
- struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- int lowbound
- = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
- int length
- = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
-
- return value_slice (array, lowbound, length);
- }
-
case TERNOP_COND:
/* Skip third and second args to evaluate the first one. */
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
val_type = expect_type;
}
- struct_return = using_struct_return (exp->gdbarch,
- value_type (method),
+ struct_return = using_struct_return (exp->gdbarch, method,
val_type);
}
else if (expect_type != NULL)
alloca (sizeof (struct value *) * (nargs + 3));
if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR)
{
- nargs++;
/* First, evaluate the structure into arg2. */
pc2 = (*pos)++;
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- if (TYPE_CODE (check_typedef (value_type (arg1)))
- != TYPE_CODE_METHODPTR)
- error (_("Non-pointer-to-member value used in pointer-to-member "
- "construct"));
+ type = check_typedef (value_type (arg1));
+ if (TYPE_CODE (type) == TYPE_CODE_METHODPTR)
+ {
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ arg1 = value_zero (TYPE_TARGET_TYPE (type), not_lval);
+ else
+ arg1 = cplus_method_ptr_to_value (&arg2, arg1);
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ /* Now, say which argument to start evaluating from. */
+ nargs++;
+ tem = 2;
+ argvec[1] = arg2;
+ }
+ else if (TYPE_CODE (type) == TYPE_CODE_MEMBERPTR)
{
- struct type *method_type = check_typedef (value_type (arg1));
+ struct type *type_ptr
+ = lookup_pointer_type (TYPE_DOMAIN_TYPE (type));
+ struct type *target_type_ptr
+ = lookup_pointer_type (TYPE_TARGET_TYPE (type));
- arg1 = value_zero (method_type, not_lval);
+ /* Now, convert these values to an address. */
+ arg2 = value_cast (type_ptr, arg2);
+
+ mem_offset = value_as_long (arg1);
+
+ arg1 = value_from_pointer (target_type_ptr,
+ value_as_long (arg2) + mem_offset);
+ arg1 = value_ind (arg1);
+ tem = 1;
}
else
- arg1 = cplus_method_ptr_to_value (&arg2, arg1);
-
- /* Now, say which argument to start evaluating from. */
- tem = 2;
+ error (_("Non-pointer-to-member value used in pointer-to-member "
+ "construct"));
}
else if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR)
{
func_name = (char *) alloca (name_len + 1);
strcpy (func_name, &exp->elts[string_pc + 1].string);
- /* Prepare list of argument types for overload resolution. */
- arg_types = (struct type **)
- alloca (nargs * (sizeof (struct type *)));
- for (ix = 1; ix <= nargs; ix++)
- arg_types[ix - 1] = value_type (argvec[ix]);
-
- find_overload_match (arg_types, nargs, func_name,
+ find_overload_match (&argvec[1], nargs, func_name,
NON_METHOD, /* not method */
- 0, /* strict match */
NULL, NULL, /* pass NULL symbol since
symbol is unknown */
NULL, &symp, NULL, 0);
evaluation. */
struct value *valp = NULL;
- /* Prepare list of argument types for overload resolution. */
- arg_types = (struct type **)
- alloca (nargs * (sizeof (struct type *)));
- for (ix = 1; ix <= nargs; ix++)
- arg_types[ix - 1] = value_type (argvec[ix]);
-
- (void) find_overload_match (arg_types, nargs, tstr,
+ (void) find_overload_match (&argvec[1], nargs, tstr,
METHOD, /* method */
- 0, /* strict match */
&arg2, /* the object */
NULL, &valp, NULL,
&static_memfuncp, 0);
}
else if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR)
{
- argvec[1] = arg2;
+ /* Pointer to member. argvec[1] is already set up. */
argvec[0] = arg1;
}
else if (op == OP_VAR_VALUE || (op == OP_SCOPE && function != NULL))
if (op == OP_VAR_VALUE)
function = exp->elts[save_pos1+2].symbol;
- /* Prepare list of argument types for overload resolution. */
- arg_types = (struct type **)
- alloca (nargs * (sizeof (struct type *)));
- for (ix = 1; ix <= nargs; ix++)
- arg_types[ix - 1] = value_type (argvec[ix]);
-
- (void) find_overload_match (arg_types, nargs,
+ (void) find_overload_match (&argvec[1], nargs,
NULL, /* no need for name */
NON_METHOD, /* not method */
- 0, /* strict match */
NULL, function, /* the function */
NULL, &symp, NULL, no_adl);
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
+ arg3 = value_struct_elt (&arg1, NULL, &exp->elts[pc + 2].string,
+ NULL, "structure");
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (lookup_struct_elt_type (value_type (arg1),
- &exp->elts[pc + 2].string,
- 0),
- lval_memory);
- else
- {
- struct value *temp = arg1;
-
- return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string,
- NULL, "structure");
- }
+ arg3 = value_zero (value_type (arg3), not_lval);
+ return arg3;
case STRUCTOP_PTR:
tem = longest_to_int (exp->elts[pc + 1].longconst);
if (opts.objectprint && TYPE_TARGET_TYPE(type)
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
{
- real_type = value_rtti_target_type (arg1, &full, &top, &using_enc);
+ real_type = value_rtti_indirect_type (arg1, &full, &top,
+ &using_enc);
if (real_type)
- {
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
- real_type = lookup_pointer_type (real_type);
- else
- real_type = lookup_reference_type (real_type);
-
arg1 = value_cast (real_type, arg1);
- }
}
}
+ arg3 = value_struct_elt (&arg1, NULL, &exp->elts[pc + 2].string,
+ NULL, "structure pointer");
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (lookup_struct_elt_type (value_type (arg1),
- &exp->elts[pc + 2].string,
- 0),
- lval_memory);
- else
- {
- struct value *temp = arg1;
-
- return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string,
- NULL, "structure pointer");
- }
+ arg3 = value_zero (value_type (arg3), not_lval);
+ return arg3;
case STRUCTOP_MEMBER:
case STRUCTOP_MPTR:
case TYPE_CODE_MEMBERPTR:
/* Now, convert these values to an address. */
- arg1 = value_cast (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)),
- arg1);
+ arg1 = value_cast_pointers (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)),
+ arg1, 1);
mem_offset = value_as_long (arg2);
arg1 = value_subscript (arg1, value_as_long (arg2));
break;
- case TYPE_CODE_BITSTRING:
- type = language_bool_type (exp->language_defn, exp->gdbarch);
- arg1 = value_bitstring_subscript (type, arg1,
- value_as_long (arg2));
- break;
-
default:
if (TYPE_NAME (type))
error (_("cannot subscript something of type `%s'"),
struct type *array_type = check_typedef (value_type (array));
LONGEST index = subscript_array[i - 1];
- lower = f77_get_lowerbound (array_type);
- array = value_subscripted_rvalue (array, index, lower);
+ array = value_subscripted_rvalue (array, index,
+ f77_get_lowerbound (array_type));
}
return array;
arg1 = value_cast (type, arg1);
return arg1;
+ case UNOP_CAST_TYPE:
+ arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (arg1);
+ arg1 = evaluate_subexp (type, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ if (type != value_type (arg1))
+ arg1 = value_cast (type, arg1);
+ return arg1;
+
case UNOP_DYNAMIC_CAST:
- (*pos) += 2;
- type = exp->elts[pc + 1].type;
+ arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (arg1);
arg1 = evaluate_subexp (type, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
return value_dynamic_cast (type, arg1);
case UNOP_REINTERPRET_CAST:
- (*pos) += 2;
- type = exp->elts[pc + 1].type;
+ arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (arg1);
arg1 = evaluate_subexp (type, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
return value_at_lazy (exp->elts[pc + 1].type,
value_as_address (arg1));
+ case UNOP_MEMVAL_TYPE:
+ arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (arg1);
+ arg1 = evaluate_subexp (expect_type, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return value_zero (type, lval_memory);
+ else
+ return value_at_lazy (type, value_as_address (arg1));
+
case UNOP_MEMVAL_TLS:
(*pos) += 3;
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
else
error (_("Attempt to use a type name as an expression"));
+ case OP_TYPEOF:
+ case OP_DECLTYPE:
+ if (noside == EVAL_SKIP)
+ {
+ evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
+ goto nosideret;
+ }
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ {
+ enum exp_opcode sub_op = exp->elts[*pos].opcode;
+ struct value *result;
+
+ result = evaluate_subexp (NULL_TYPE, exp, pos,
+ EVAL_AVOID_SIDE_EFFECTS);
+
+ /* 'decltype' has special semantics for lvalues. */
+ if (op == OP_DECLTYPE
+ && (sub_op == BINOP_SUBSCRIPT
+ || sub_op == STRUCTOP_MEMBER
+ || sub_op == STRUCTOP_MPTR
+ || sub_op == UNOP_IND
+ || sub_op == STRUCTOP_STRUCT
+ || sub_op == STRUCTOP_PTR
+ || sub_op == OP_SCOPE))
+ {
+ struct type *type = value_type (result);
+
+ if (TYPE_CODE (check_typedef (type)) != TYPE_CODE_REF)
+ {
+ type = lookup_reference_type (type);
+ result = allocate_value (type);
+ }
+ }
+
+ return result;
+ }
+ else
+ error (_("Attempt to use a type as an expression"));
+
+ case OP_TYPEID:
+ {
+ struct value *result;
+ enum exp_opcode sub_op = exp->elts[*pos].opcode;
+
+ if (sub_op == OP_TYPE || sub_op == OP_DECLTYPE || sub_op == OP_TYPEOF)
+ result = evaluate_subexp (NULL_TYPE, exp, pos,
+ EVAL_AVOID_SIDE_EFFECTS);
+ else
+ result = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+
+ if (noside != EVAL_NORMAL)
+ return allocate_value (cplus_typeid_type (exp->gdbarch));
+
+ return cplus_typeid (result);
+ }
+
default:
/* Removing this case and compiling with gcc -Wall reveals that
a lot of cases are hitting this case. Some of these should
return value_cast (lookup_pointer_type (exp->elts[pc + 1].type),
evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ case UNOP_MEMVAL_TYPE:
+ {
+ struct type *type;
+
+ (*pos) += 1;
+ x = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (x);
+ return value_cast (lookup_pointer_type (type),
+ evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ }
+
case OP_VAR_VALUE:
var = exp->elts[pc + 2].symbol;
{
struct type *type = check_typedef (value_type (x));
- if (VALUE_LVAL (x) == lval_memory || value_must_coerce_to_target (x))
- return value_zero (lookup_pointer_type (value_type (x)),
- not_lval);
- else if (TYPE_CODE (type) == TYPE_CODE_REF)
+ if (TYPE_CODE (type) == TYPE_CODE_REF)
return value_zero (lookup_pointer_type (TYPE_TARGET_TYPE (type)),
not_lval);
+ else if (VALUE_LVAL (x) == lval_memory || value_must_coerce_to_target (x))
+ return value_zero (lookup_pointer_type (value_type (x)),
+ not_lval);
else
error (_("Attempt to take address of "
"value not located in memory."));
type = check_typedef (exp->elts[pc + 1].type);
return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type));
+ case UNOP_MEMVAL_TYPE:
+ (*pos) += 1;
+ val = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = check_typedef (value_type (val));
+ return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type));
+
case OP_VAR_VALUE:
(*pos) += 4;
type = check_typedef (SYMBOL_TYPE (exp->elts[pc + 2].symbol));
projects / deliverable / binutils-gdb.git / blobdiff