/* Low level packing and unpacking of values for GDB, the GNU Debugger.
+
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2002.
- Free Software Foundation, Inc.
+ 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003 Free Software
+ Foundation, Inc.
This file is part of GDB.
#include "demangle.h"
#include "doublest.h"
#include "gdb_assert.h"
+#include "regcache.h"
+#include "block.h"
/* Prototypes for exported functions. */
register struct internalvar *var;
for (var = internalvars; var; var = var->next)
- if (STREQ (var->name, name))
+ if (strcmp (var->name, name) == 0)
return var;
var = (struct internalvar *) xmalloc (sizeof (struct internalvar));
{
struct value *val;
-#ifdef IS_TRAPPED_INTERNALVAR
- if (IS_TRAPPED_INTERNALVAR (var->name))
- return VALUE_OF_TRAPPED_INTERNALVAR (var);
-#endif
-
val = value_copy (var->value);
if (VALUE_LAZY (val))
value_fetch_lazy (val);
{
register char *addr = VALUE_CONTENTS (var->value) + offset;
-#ifdef IS_TRAPPED_INTERNALVAR
- if (IS_TRAPPED_INTERNALVAR (var->name))
- SET_TRAPPED_INTERNALVAR (var, newval, bitpos, bitsize, offset);
-#endif
-
if (bitsize)
modify_field (addr, value_as_long (newval),
bitpos, bitsize);
{
struct value *newval;
-#ifdef IS_TRAPPED_INTERNALVAR
- if (IS_TRAPPED_INTERNALVAR (var->name))
- SET_TRAPPED_INTERNALVAR (var, val, 0, 0, 0);
-#endif
-
newval = value_copy (val);
newval->modifiable = 1;
for (var = internalvars; var; var = var->next)
{
-#ifdef IS_TRAPPED_INTERNALVAR
- if (IS_TRAPPED_INTERNALVAR (var->name))
- continue;
-#endif
if (!varseen)
{
varseen = 1;
to an INT (or some size). After all, it is only an offset. */
LONGEST
-unpack_long (struct type *type, char *valaddr)
+unpack_long (struct type *type, const char *valaddr)
{
register enum type_code code = TYPE_CODE (type);
register int len = TYPE_LENGTH (type);
format, result is in host format. */
DOUBLEST
-unpack_double (struct type *type, char *valaddr, int *invp)
+unpack_double (struct type *type, const char *valaddr, int *invp)
{
enum type_code code;
int len;
to an INT (or some size). After all, it is only an offset. */
CORE_ADDR
-unpack_pointer (struct type *type, char *valaddr)
+unpack_pointer (struct type *type, const char *valaddr)
{
/* Assume a CORE_ADDR can fit in a LONGEST (for now). Not sure
whether we want this to be true eventually. */
}
\f
-/* Get the value of the FIELDN'th field (which must be static) of TYPE. */
+/* Get the value of the FIELDN'th field (which must be static) of
+ TYPE. Return NULL if the field doesn't exist or has been
+ optimized out. */
struct value *
value_static_field (struct type *type, int fieldno)
{
- CORE_ADDR addr;
- asection *sect;
+ struct value *retval;
+
if (TYPE_FIELD_STATIC_HAS_ADDR (type, fieldno))
{
- addr = TYPE_FIELD_STATIC_PHYSADDR (type, fieldno);
- sect = NULL;
+ retval = value_at (TYPE_FIELD_TYPE (type, fieldno),
+ TYPE_FIELD_STATIC_PHYSADDR (type, fieldno),
+ NULL);
}
else
{
char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, fieldno);
- struct symbol *sym = lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL);
+ struct symbol *sym = lookup_symbol (phys_name, 0, VAR_DOMAIN, 0, NULL);
if (sym == NULL)
{
/* With some compilers, e.g. HP aCC, static data members are reported
return NULL;
else
{
- addr = SYMBOL_VALUE_ADDRESS (msym);
- sect = SYMBOL_BFD_SECTION (msym);
+ retval = value_at (TYPE_FIELD_TYPE (type, fieldno),
+ SYMBOL_VALUE_ADDRESS (msym),
+ SYMBOL_BFD_SECTION (msym));
}
}
else
{
- /* Anything static that isn't a constant, has an address */
- if (SYMBOL_CLASS (sym) != LOC_CONST)
- {
- addr = SYMBOL_VALUE_ADDRESS (sym);
- sect = SYMBOL_BFD_SECTION (sym);
- }
- /* However, static const's do not, the value is already known. */
- else
- {
- return value_from_longest (TYPE_FIELD_TYPE (type, fieldno), SYMBOL_VALUE (sym));
- }
+ /* SYM should never have a SYMBOL_CLASS which will require
+ read_var_value to use the FRAME parameter. */
+ if (symbol_read_needs_frame (sym))
+ warning ("static field's value depends on the current "
+ "frame - bad debug info?");
+ retval = read_var_value (sym, NULL);
}
- SET_FIELD_PHYSADDR (TYPE_FIELD (type, fieldno), addr);
+ if (retval && VALUE_LVAL (retval) == lval_memory)
+ SET_FIELD_PHYSADDR (TYPE_FIELD (type, fieldno),
+ VALUE_ADDRESS (retval));
}
- return value_at (TYPE_FIELD_TYPE (type, fieldno), addr, sect);
+ return retval;
}
/* Change the enclosing type of a value object VAL to NEW_ENCL_TYPE.
struct value *prev;
new_val = (struct value *) xrealloc (val, sizeof (struct value) + TYPE_LENGTH (new_encl_type));
-
+
+ VALUE_ENCLOSING_TYPE (new_val) = new_encl_type;
+
/* We have to make sure this ends up in the same place in the value
chain as the original copy, so it's clean-up behavior is the same.
If the value has been released, this is a waste of time, but there
struct symbol *sym;
struct minimal_symbol *msym;
- sym = lookup_symbol (physname, 0, VAR_NAMESPACE, 0, NULL);
+ sym = lookup_symbol (physname, 0, VAR_DOMAIN, 0, NULL);
if (sym != NULL)
{
msym = NULL;
If the field is signed, we also do sign extension. */
LONGEST
-unpack_field_as_long (struct type *type, char *valaddr, int fieldno)
+unpack_field_as_long (struct type *type, const char *valaddr, int fieldno)
{
ULONGEST val;
ULONGEST valmask;
/* ARGSUSED */
struct value *
-value_being_returned (struct type *valtype, char *retbuf, int struct_return)
+value_being_returned (struct type *valtype, struct regcache *retbuf,
+ int struct_return)
{
struct value *val;
CORE_ADDR addr;
-#if 0
/* If this is not defined, just use EXTRACT_RETURN_VALUE instead. */
if (EXTRACT_STRUCT_VALUE_ADDRESS_P ())
if (struct_return)
error ("Function return value unknown.");
return value_at (valtype, addr, NULL);
}
-#endif
/* If this is not defined, just use EXTRACT_RETURN_VALUE instead. */
if (DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS_P ())
if (struct_return)
{
- addr = DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS (retbuf);
+ char *buf = deprecated_grub_regcache_for_registers (retbuf);
+ addr = DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS (buf);
if (!addr)
error ("Function return value unknown.");
return value_at (valtype, addr, NULL);
val = allocate_value (valtype);
CHECK_TYPEDEF (valtype);
-#define EXTRACT_RETURN_VALUE DEPRECATED_EXTRACT_RETURN_VALUE
- EXTRACT_RETURN_VALUE (valtype, retbuf, VALUE_CONTENTS_RAW (val));
+ /* If the function returns void, don't bother fetching the return value. */
+ if (TYPE_CODE (valtype) != TYPE_CODE_VOID)
+ EXTRACT_RETURN_VALUE (valtype, retbuf, VALUE_CONTENTS_RAW (val));
return val;
}
|| code == TYPE_CODE_UNION) /* FIXME, implement struct return. */
error ("GDB does not support specifying a struct or union return value.");
- STORE_RETURN_VALUE (type, VALUE_CONTENTS (val));
+ STORE_RETURN_VALUE (type, current_regcache, VALUE_CONTENTS (val));
}
\f
void
projects / deliverable / binutils-gdb.git / blobdiff