Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008 Free Software Foundation, Inc.
+ 2008, 2009 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_assert.h"
#include "cp-support.h"
#include "observer.h"
+#include "objfiles.h"
+#include "symtab.h"
extern int overload_debug;
/* Local functions. */
value);
}
-/* Find the address of function name NAME in the inferior. */
+/* Find the address of function name NAME in the inferior. If OBJF_P
+ is non-NULL, *OBJF_P will be set to the OBJFILE where the function
+ is defined. */
struct value *
-find_function_in_inferior (const char *name)
+find_function_in_inferior (const char *name, struct objfile **objf_p)
{
struct symbol *sym;
sym = lookup_symbol (name, 0, VAR_DOMAIN, 0);
error (_("\"%s\" exists in this program but is not a function."),
name);
}
+
+ if (objf_p)
+ *objf_p = SYMBOL_SYMTAB (sym)->objfile;
+
return value_of_variable (sym, NULL);
}
else
lookup_minimal_symbol (name, NULL, NULL);
if (msymbol != NULL)
{
+ struct objfile *objfile = msymbol_objfile (msymbol);
+ struct gdbarch *gdbarch = get_objfile_arch (objfile);
+
struct type *type;
CORE_ADDR maddr;
- type = lookup_pointer_type (builtin_type_char);
+ type = lookup_pointer_type (builtin_type (gdbarch)->builtin_char);
type = lookup_function_type (type);
type = lookup_pointer_type (type);
maddr = SYMBOL_VALUE_ADDRESS (msymbol);
+
+ if (objf_p)
+ *objf_p = objfile;
+
return value_from_pointer (type, maddr);
}
else
struct value *
value_allocate_space_in_inferior (int len)
{
+ struct objfile *objf;
+ struct value *val = find_function_in_inferior ("malloc", &objf);
+ struct gdbarch *gdbarch = get_objfile_arch (objf);
struct value *blocklen;
- struct value *val = find_function_in_inferior ("malloc");
- blocklen = value_from_longest (builtin_type_int, (LONGEST) len);
+ blocklen = value_from_longest (builtin_type (gdbarch)->builtin_int, len);
val = call_function_by_hand (val, 1, &blocklen);
if (value_logical_not (val))
{
if (v)
{
/* Downcasting is possible (t1 is superclass of v2). */
- CORE_ADDR addr2 = VALUE_ADDRESS (v2);
- addr2 -= (VALUE_ADDRESS (v)
- + value_offset (v)
- + value_embedded_offset (v));
+ CORE_ADDR addr2 = value_address (v2);
+ addr2 -= value_address (v) + value_embedded_offset (v);
return value_at (type, addr2);
}
}
{
struct type *element_type = TYPE_TARGET_TYPE (type);
unsigned element_length = TYPE_LENGTH (check_typedef (element_type));
- if (element_length > 0
- && TYPE_ARRAY_UPPER_BOUND_TYPE (type) == BOUND_CANNOT_BE_DETERMINED)
+ if (element_length > 0 && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
{
struct type *range_type = TYPE_INDEX_TYPE (type);
int val_length = TYPE_LENGTH (type2);
return arg2;
}
else if (VALUE_LVAL (arg2) == lval_memory)
- return value_at_lazy (type,
- VALUE_ADDRESS (arg2) + value_offset (arg2));
+ return value_at_lazy (type, value_address (arg2));
else if (code1 == TYPE_CODE_VOID)
{
return value_zero (builtin_type_void, not_lval);
read_memory (addr, value_contents_all_raw (val), TYPE_LENGTH (type));
VALUE_LVAL (val) = lval_memory;
- VALUE_ADDRESS (val) = addr;
+ set_value_address (val, addr);
return val;
}
if (TYPE_CODE (check_typedef (type)) == TYPE_CODE_VOID)
error (_("Attempt to dereference a generic pointer."));
- val = allocate_value (type);
+ val = allocate_value_lazy (type);
VALUE_LVAL (val) = lval_memory;
- VALUE_ADDRESS (val) = addr;
- set_value_lazy (val, 1);
+ set_value_address (val, addr);
return val;
}
int
value_fetch_lazy (struct value *val)
{
+ gdb_assert (value_lazy (val));
+ allocate_value_contents (val);
if (VALUE_LVAL (val) == lval_memory)
{
- CORE_ADDR addr = VALUE_ADDRESS (val) + value_offset (val);
+ CORE_ADDR addr = value_address (val);
int length = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
if (length)
VALUE_REGNUM (new_val));
else if (VALUE_LVAL (new_val) == lval_memory)
fprintf_unfiltered (gdb_stdlog, " address=0x%s",
- paddr_nz (VALUE_ADDRESS (new_val)));
+ paddr_nz (value_address (new_val)));
else
fprintf_unfiltered (gdb_stdlog, " computed");
watchpoints from trying to watch the saved frame pointer. */
value_free_to_mark (mark);
}
+ else if (VALUE_LVAL (val) == lval_computed)
+ value_computed_funcs (val)->read (val);
else
internal_error (__FILE__, __LINE__, "Unexpected lazy value type.");
error (_("Can't handle bitfields which don't fit in a %d bit word."),
(int) sizeof (LONGEST) * HOST_CHAR_BIT);
- read_memory (VALUE_ADDRESS (toval) + value_offset (toval),
- buffer, changed_len);
+ read_memory (value_address (toval), buffer, changed_len);
modify_field (buffer, value_as_long (fromval),
value_bitpos (toval), value_bitsize (toval));
- changed_addr = VALUE_ADDRESS (toval) + value_offset (toval);
+ changed_addr = value_address (toval);
dest_buffer = buffer;
}
else
{
- changed_addr = VALUE_ADDRESS (toval) + value_offset (toval);
+ changed_addr = value_address (toval);
changed_len = TYPE_LENGTH (type);
dest_buffer = value_contents (fromval);
}
observer_notify_target_changed (¤t_target);
break;
}
-
+
+ case lval_computed:
+ {
+ struct lval_funcs *funcs = value_computed_funcs (toval);
+
+ funcs->write (toval, fromval);
+ }
+ break;
+
default:
error (_("Left operand of assignment is not an lvalue."));
}
val = allocate_repeat_value (value_enclosing_type (arg1), count);
- read_memory (VALUE_ADDRESS (arg1) + value_offset (arg1),
+ read_memory (value_address (arg1),
value_contents_all_raw (val),
TYPE_LENGTH (value_enclosing_type (val)));
VALUE_LVAL (val) = lval_memory;
- VALUE_ADDRESS (val) = VALUE_ADDRESS (arg1) + value_offset (arg1);
+ set_value_address (val, value_address (arg1));
return val;
}
value_of_variable (struct symbol *var, struct block *b)
{
struct value *val;
- struct frame_info *frame = NULL;
+ struct frame_info *frame;
- if (!b)
- frame = NULL; /* Use selected frame. */
- else if (symbol_read_needs_frame (var))
+ if (!symbol_read_needs_frame (var))
+ frame = NULL;
+ else if (!b)
+ frame = get_selected_frame (_("No frame selected."));
+ else
{
frame = block_innermost_frame (b);
if (!frame)
return val;
}
+struct value *
+address_of_variable (struct symbol *var, struct block *b)
+{
+ struct type *type = SYMBOL_TYPE (var);
+ struct value *val;
+
+ /* Evaluate it first; if the result is a memory address, we're fine.
+ Lazy evaluation pays off here. */
+
+ val = value_of_variable (var, b);
+
+ if ((VALUE_LVAL (val) == lval_memory && value_lazy (val))
+ || TYPE_CODE (type) == TYPE_CODE_FUNC)
+ {
+ CORE_ADDR addr = value_address (val);
+ return value_from_pointer (lookup_pointer_type (type), addr);
+ }
+
+ /* Not a memory address; check what the problem was. */
+ switch (VALUE_LVAL (val))
+ {
+ case lval_register:
+ {
+ struct frame_info *frame;
+ const char *regname;
+
+ frame = frame_find_by_id (VALUE_FRAME_ID (val));
+ gdb_assert (frame);
+
+ regname = gdbarch_register_name (get_frame_arch (frame),
+ VALUE_REGNUM (val));
+ gdb_assert (regname && *regname);
+
+ error (_("Address requested for identifier "
+ "\"%s\" which is in register $%s"),
+ SYMBOL_PRINT_NAME (var), regname);
+ break;
+ }
+
+ default:
+ error (_("Can't take address of \"%s\" which isn't an lvalue."),
+ SYMBOL_PRINT_NAME (var));
+ break;
+ }
+
+ return val;
+}
+
/* Return one if VAL does not live in target memory, but should in order
to operate on it. Otherwise return zero. */
error (_("Attempt to take address of value not located in memory."));
return value_from_pointer (lookup_pointer_type (TYPE_TARGET_TYPE (type)),
- (VALUE_ADDRESS (arg1) + value_offset (arg1)));
+ value_address (arg1));
}
/* Given a value which is a function, return a value which is a pointer
error (_("Attempt to take address of value not located in memory."));
retval = value_from_pointer (lookup_pointer_type (value_type (arg1)),
- (VALUE_ADDRESS (arg1) + value_offset (arg1)));
+ value_address (arg1));
return retval;
}
/* Get target memory address */
arg2 = value_from_pointer (lookup_pointer_type (value_type (arg1)),
- (VALUE_ADDRESS (arg1)
- + value_offset (arg1)
+ (value_address (arg1)
+ value_embedded_offset (arg1)));
/* This may be a pointer to a base subobject; so remember the
return val;
}
+struct value *
+value_typed_string (char *ptr, int len, struct type *char_type)
+{
+ struct value *val;
+ int lowbound = current_language->string_lower_bound;
+ int highbound = len / TYPE_LENGTH (char_type);
+ struct type *rangetype = create_range_type ((struct type *) NULL,
+ builtin_type_int32,
+ lowbound,
+ highbound + lowbound - 1);
+ struct type *stringtype
+ = create_array_type ((struct type *) NULL, char_type, rangetype);
+
+ val = allocate_value (stringtype);
+ memcpy (value_contents_raw (val), ptr, len);
+ return val;
+}
+
/* Create a value for a string constant by allocating space in the
inferior, copying the data into that space, and returning the
address with type TYPE_CODE_STRING. PTR points to the string
if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
{
struct value *v;
- if (TYPE_FIELD_STATIC (type, i))
+ if (field_is_static (&TYPE_FIELD (type, i)))
{
v = value_static_field (type, i);
if (v == 0)
if (BASETYPE_VIA_VIRTUAL (type, i))
{
int boffset;
- struct value *v2 = allocate_value (basetype);
+ struct value *v2;
boffset = baseclass_offset (type, i,
value_contents (arg1) + offset,
- VALUE_ADDRESS (arg1)
- + value_offset (arg1) + offset);
+ value_address (arg1) + offset);
if (boffset == -1)
error (_("virtual baseclass botch"));
{
CORE_ADDR base_addr;
- base_addr =
- VALUE_ADDRESS (arg1) + value_offset (arg1) + boffset;
+ v2 = allocate_value (basetype);
+ base_addr = value_address (arg1) + boffset;
if (target_read_memory (base_addr,
value_contents_raw (v2),
TYPE_LENGTH (basetype)) != 0)
error (_("virtual baseclass botch"));
VALUE_LVAL (v2) = lval_memory;
- VALUE_ADDRESS (v2) = base_addr;
+ set_value_address (v2, base_addr);
}
else
{
- VALUE_LVAL (v2) = VALUE_LVAL (arg1);
- VALUE_ADDRESS (v2) = VALUE_ADDRESS (arg1);
- VALUE_FRAME_ID (v2) = VALUE_FRAME_ID (arg1);
- set_value_offset (v2, value_offset (arg1) + boffset);
if (VALUE_LVAL (arg1) == lval_memory && value_lazy (arg1))
- set_value_lazy (v2, 1);
+ v2 = allocate_value_lazy (basetype);
else
- memcpy (value_contents_raw (v2),
- value_contents_raw (arg1) + boffset,
- TYPE_LENGTH (basetype));
+ {
+ v2 = allocate_value (basetype);
+ memcpy (value_contents_raw (v2),
+ value_contents_raw (arg1) + boffset,
+ TYPE_LENGTH (basetype));
+ }
+ set_value_component_location (v2, arg1);
+ VALUE_FRAME_ID (v2) = VALUE_FRAME_ID (arg1);
+ set_value_offset (v2, value_offset (arg1) + boffset);
}
if (found_baseclass)
if (offset < 0 || offset >= TYPE_LENGTH (type))
{
gdb_byte *tmp = alloca (TYPE_LENGTH (baseclass));
- if (target_read_memory (VALUE_ADDRESS (*arg1p)
- + value_offset (*arg1p) + offset,
+ if (target_read_memory (value_address (*arg1p) + offset,
tmp, TYPE_LENGTH (baseclass)) != 0)
error (_("virtual baseclass botch"));
base_valaddr = tmp;
base_valaddr = value_contents (*arg1p) + offset;
base_offset = baseclass_offset (type, i, base_valaddr,
- VALUE_ADDRESS (*arg1p)
- + value_offset (*arg1p) + offset);
+ value_address (*arg1p) + offset);
if (base_offset == -1)
error (_("virtual baseclass botch"));
}
}
/* Search through the methods of an object (and its bases) to find a
- specified method. Return the pointer to the fn_field list of
+ specified method. Return the pointer to the fn_field list of
overloaded instances.
Helper function for value_find_oload_list.
base_offset = value_offset (*argp) + offset;
base_offset = baseclass_offset (type, i,
value_contents (*argp) + base_offset,
- VALUE_ADDRESS (*argp) + base_offset);
+ value_address (*argp) + base_offset);
if (base_offset == -1)
error (_("virtual baseclass botch"));
}
if (objp)
{
- if (TYPE_CODE (value_type (temp)) != TYPE_CODE_PTR
- && (TYPE_CODE (value_type (*objp)) == TYPE_CODE_PTR
- || TYPE_CODE (value_type (*objp)) == TYPE_CODE_REF))
+ struct type *temp_type = check_typedef (value_type (temp));
+ struct type *obj_type = check_typedef (value_type (*objp));
+ if (TYPE_CODE (temp_type) != TYPE_CODE_PTR
+ && (TYPE_CODE (obj_type) == TYPE_CODE_PTR
+ || TYPE_CODE (obj_type) == TYPE_CODE_REF))
{
temp = value_addr (temp);
}
if (t_field_name && strcmp (t_field_name, name) == 0)
{
- if (TYPE_FIELD_STATIC (t, i))
+ if (field_is_static (&TYPE_FIELD (t, i)))
{
v = value_static_field (t, i);
if (v == NULL)
result = allocate_value (lookup_methodptr_type (TYPE_FN_FIELD_TYPE (f, j)));
cplus_make_method_ptr (value_type (result),
value_contents_writeable (result),
- VALUE_ADDRESS (v), 0);
+ value_address (v), 0);
}
}
return result;
/* Go back by the computed top_offset from the beginning of the
object, adjusting for the embedded offset of argp if that's what
value_rtti_type used for its computation. */
- new_val = value_at_lazy (real_type, VALUE_ADDRESS (argp) - top +
+ new_val = value_at_lazy (real_type, value_address (argp) - top +
(using_enc ? 0 : value_embedded_offset (argp)));
deprecated_set_value_type (new_val, value_type (argp));
set_value_embedded_offset (new_val, (using_enc
slice_range_type);
TYPE_CODE (slice_type) = TYPE_CODE (array_type);
- slice = allocate_value (slice_type);
if (VALUE_LVAL (array) == lval_memory && value_lazy (array))
- set_value_lazy (slice, 1);
+ slice = allocate_value_lazy (slice_type);
else
- memcpy (value_contents_writeable (slice),
- value_contents (array) + offset,
- TYPE_LENGTH (slice_type));
-
- if (VALUE_LVAL (array) == lval_internalvar)
- VALUE_LVAL (slice) = lval_internalvar_component;
- else
- VALUE_LVAL (slice) = VALUE_LVAL (array);
+ {
+ slice = allocate_value (slice_type);
+ memcpy (value_contents_writeable (slice),
+ value_contents (array) + offset,
+ TYPE_LENGTH (slice_type));
+ }
- VALUE_ADDRESS (slice) = VALUE_ADDRESS (array);
+ set_value_component_location (slice, array);
VALUE_FRAME_ID (slice) = VALUE_FRAME_ID (array);
set_value_offset (slice, value_offset (array) + offset);
}
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