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* value.h (struct internalvar): Remove.

Browse Source 
(get_internalvar_integer): Add prototype.
	(set_internalvar_integer): Add prototype.
	(clear_internalvar): Add prototype.

	* value.c (struct internalvar): Move here.  Add type member.  Remove
	endian member.  Add union_internalvar member instead of value member.
	(init_if_undefined_command): Use intvar->type.
	(create_internalvar): Do not initialize value/endian, but type.
	(create_internalvar_type_lazy): Call create_internalvar.
	(value_of_internalvar): Handle host-side internalvar contents.
	(set_internalvar_component): Likewise.
	(set_internalvar): Likewise.
	(get_internalvar_integer): New function.
	(clear_internalvar): Likewise.
	(set_internalvar_integer): Likewise.
	(preserve_values): Handle host-side internalvar contents.

	* breakpoint.c (set_breakpoint_count, set_tracepoint_count): Call
	set_internalvar_integer instead of set_internalvar.
	* findcmd.c (find_command): Likewise.
	* infrun.c (handle_inferior_event): Likewise.
	* source.c (forward_search_command, reverse_search_command): Likewise.
	* tracepoint.c (set_traceframe_num, set_tracepoint_num,
	set_traceframe_context): Likewise.

	* printcmd.c (x_command): Call clear_internalvar instead of
	set_internalvar.
	* tracepoint.c (set_traceframe_context): Likewise.

	* breakpoint.c (get_number_trailer): Call get_internalvar_integer
	instead of value_of_internalvar.
	* linespec.c (decode_dollar): Likewise.

	* expprint.c (dump_subexp_body_standard): Use internalvar_name
	instead of accessing internalvar private elements.
	* valops.c (value_assign): Copy from original source instead of
	accessing internalvar private elements.
This commit is contained in:
Ulrich Weigand 2009-06-03 18:16:44 +00:00
parent 6ceaaae577
commit 4fa6249465
12 changed files with 306 additions and 159 deletions
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41
gdb/ChangeLog
View File

@ -1,3 +1,44 @@
2009-06-03 Ulrich Weigand <uweigand@de.ibm.com>
* value.h (struct internalvar): Remove.
(get_internalvar_integer): Add prototype.
(set_internalvar_integer): Add prototype.
(clear_internalvar): Add prototype.
* value.c (struct internalvar): Move here. Add type member. Remove
endian member. Add union_internalvar member instead of value member.
(init_if_undefined_command): Use intvar->type.
(create_internalvar): Do not initialize value/endian, but type.
(create_internalvar_type_lazy): Call create_internalvar.
(value_of_internalvar): Handle host-side internalvar contents.
(set_internalvar_component): Likewise.
(set_internalvar): Likewise.
(get_internalvar_integer): New function.
(clear_internalvar): Likewise.
(set_internalvar_integer): Likewise.
(preserve_values): Handle host-side internalvar contents.
* breakpoint.c (set_breakpoint_count, set_tracepoint_count): Call
set_internalvar_integer instead of set_internalvar.
* findcmd.c (find_command): Likewise.
* infrun.c (handle_inferior_event): Likewise.
* source.c (forward_search_command, reverse_search_command): Likewise.
* tracepoint.c (set_traceframe_num, set_tracepoint_num,
set_traceframe_context): Likewise.
* printcmd.c (x_command): Call clear_internalvar instead of
set_internalvar.
* tracepoint.c (set_traceframe_context): Likewise.
* breakpoint.c (get_number_trailer): Call get_internalvar_integer
instead of value_of_internalvar.
* linespec.c (decode_dollar): Likewise.
* expprint.c (dump_subexp_body_standard): Use internalvar_name
instead of accessing internalvar private elements.
* valops.c (value_assign): Copy from original source instead of
accessing internalvar private elements.
2009-06-03 Ulrich Weigand <uweigand@de.ibm.com>
* scm-lang.c (builtin_type_scm): Remove.

13
gdb/breakpoint.c
View File

@ -368,8 +368,7 @@ void
set_breakpoint_count (int num)
{
breakpoint_count = num;
set_internalvar (lookup_internalvar ("bpnum"),
value_from_longest (builtin_type_int32, (LONGEST) num));
set_internalvar_integer (lookup_internalvar ("bpnum"), num);
}
/* Used in run_command to zero the hit count when a new run starts. */
@ -421,16 +420,15 @@ get_number_trailer (char **pp, int trailer)
to pass to lookup_internalvar(). */
char *varname;
char *start = ++p;
struct value *val;
LONGEST val;
while (isalnum (*p) || *p == '_')
p++;
varname = (char *) alloca (p - start + 1);
strncpy (varname, start, p - start);
varname[p - start] = '\0';
val = value_of_internalvar (lookup_internalvar (varname));
if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT)
retval = (int) value_as_long (val);
if (get_internalvar_integer (lookup_internalvar (varname), &val))
retval = (int) val;
else
{
printf_filtered (_("Convenience variable must have integer value.\n"));
@ -8275,8 +8273,7 @@ static void
set_tracepoint_count (int num)
{
tracepoint_count = num;
set_internalvar (lookup_internalvar ("tpnum"),
value_from_longest (builtin_type_int32, (LONGEST) num));
set_internalvar_integer (lookup_internalvar ("tpnum"), num);
}
void

2
gdb/expprint.c
View File

@ -1002,7 +1002,7 @@ dump_subexp_body_standard (struct expression *exp,
fprintf_filtered (stream, "Internal var @");
gdb_print_host_address (exp->elts[elt].internalvar, stream);
fprintf_filtered (stream, " (%s)",
exp->elts[elt].internalvar->name);
internalvar_name (exp->elts[elt].internalvar));
elt += 2;
break;
case OP_FUNCALL:

4
gdb/findcmd.c
View File

@ -291,9 +291,7 @@ find_command (char *args, int from_tty)
/* Record and print the results. */
set_internalvar (lookup_internalvar ("numfound"),
value_from_longest (builtin_type_int32,
(LONGEST) found_count));
set_internalvar_integer (lookup_internalvar ("numfound"), found_count);
if (found_count > 0)
{
struct gdbarch *gdbarch = current_gdbarch;

5
gdb/infrun.c
View File

@ -2512,9 +2512,8 @@ handle_inferior_event (struct execution_control_state *ecs)
/* Record the exit code in the convenience variable $_exitcode, so
that the user can inspect this again later. */
set_internalvar (lookup_internalvar ("_exitcode"),
value_from_longest (builtin_type_int32,
(LONGEST) ecs->ws.value.integer));
set_internalvar_integer (lookup_internalvar ("_exitcode"),
(LONGEST) ecs->ws.value.integer);
gdb_flush (gdb_stdout);
target_mourn_inferior ();
singlestep_breakpoints_inserted_p = 0;

13
gdb/linespec.c
View File

@ -1669,7 +1669,7 @@ static struct symtabs_and_lines
decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
char ***canonical, struct symtab *file_symtab)
{
struct value *valx;
LONGEST valx;
int index = 0;
int need_canonical = 0;
struct symtabs_and_lines values;
@ -1684,10 +1684,12 @@ decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
if (!*p) /* Reached end of token without hitting non-digit. */
{
/* We have a value history reference. */
struct value *val_history;
sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index);
valx = access_value_history ((copy[1] == '$') ? -index : index);
if (TYPE_CODE (value_type (valx)) != TYPE_CODE_INT)
val_history = access_value_history ((copy[1] == '$') ? -index : index);
if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT)
error (_("History values used in line specs must have integer values."));
valx = value_as_long (val_history);
}
else
{
@ -1709,8 +1711,7 @@ decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
return minsym_found (funfirstline, msymbol);
/* Not a user variable or function -- must be convenience variable. */
valx = value_of_internalvar (lookup_internalvar (copy + 1));
if (TYPE_CODE (value_type (valx)) != TYPE_CODE_INT)
if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx))
error (_("Convenience variables used in line specs must have integer values."));
}
@ -1718,7 +1719,7 @@ decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
/* Either history value or convenience value from above, in valx. */
val.symtab = file_symtab ? file_symtab : default_symtab;
val.line = value_as_long (valx);
val.line = valx;
val.pc = 0;
values.sals = (struct symtab_and_line *) xmalloc (sizeof val);

3
gdb/printcmd.c
View File

@ -1369,8 +1369,7 @@ x_command (char *exp, int from_tty)
then don't fetch it now; instead mark it by voiding the $__
variable. */
if (value_lazy (last_examine_value))
set_internalvar (lookup_internalvar ("__"),
allocate_value (builtin_type_void));
clear_internalvar (lookup_internalvar ("__"));
else
set_internalvar (lookup_internalvar ("__"), last_examine_value);
}

8
gdb/source.c
View File

@ -1615,9 +1615,7 @@ forward_search_command (char *regex, int from_tty)
/* Match! */
fclose (stream);
print_source_lines (current_source_symtab, line, line + 1, 0);
set_internalvar (lookup_internalvar ("_"),
value_from_longest (builtin_type_int32,
(LONGEST) line));
set_internalvar_integer (lookup_internalvar ("_"), line);
current_source_line = max (line - lines_to_list / 2, 1);
return;
}
@ -1695,9 +1693,7 @@ reverse_search_command (char *regex, int from_tty)
/* Match! */
fclose (stream);
print_source_lines (current_source_symtab, line, line + 1, 0);
set_internalvar (lookup_internalvar ("_"),
value_from_longest (builtin_type_int32,
(LONGEST) line));
set_internalvar_integer (lookup_internalvar ("_"), line);
current_source_line = max (line - lines_to_list / 2, 1);
return;
}

35
gdb/tracepoint.c
View File

@ -208,8 +208,7 @@ static void
set_traceframe_num (int num)
{
traceframe_number = num;
set_internalvar (lookup_internalvar ("trace_frame"),
value_from_longest (builtin_type_int32, (LONGEST) num));
set_internalvar_integer (lookup_internalvar ("trace_frame"), num);
}
/* Set tracepoint number to NUM. */
@ -217,8 +216,7 @@ static void
set_tracepoint_num (int num)
{
tracepoint_number = num;
set_internalvar (lookup_internalvar ("tracepoint"),
value_from_longest (builtin_type_int32, (LONGEST) num));
set_internalvar_integer (lookup_internalvar ("tracepoint"), num);
}
/* Set externally visible debug variables for querying/printing
@ -240,13 +238,9 @@ set_traceframe_context (struct frame_info *trace_frame)
traceframe_fun = 0;
traceframe_sal.pc = traceframe_sal.line = 0;
traceframe_sal.symtab = NULL;
set_internalvar (lookup_internalvar ("trace_func"),
allocate_value (builtin_type_void));
set_internalvar (lookup_internalvar ("trace_file"),
allocate_value (builtin_type_void));
set_internalvar (lookup_internalvar ("trace_line"),
value_from_longest (builtin_type_int32,
(LONGEST) - 1));
clear_internalvar (lookup_internalvar ("trace_func"));
clear_internalvar (lookup_internalvar ("trace_file"));
set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
return;
}
@ -257,16 +251,14 @@ set_traceframe_context (struct frame_info *trace_frame)
/* Save linenumber as "$trace_line", a debugger variable visible to
users. */
set_internalvar (lookup_internalvar ("trace_line"),
value_from_longest (builtin_type_int32,
(LONGEST) traceframe_sal.line));
set_internalvar_integer (lookup_internalvar ("trace_line"),
traceframe_sal.line);
/* Save func name as "$trace_func", a debugger variable visible to
users. */
if (traceframe_fun == NULL ||
SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
set_internalvar (lookup_internalvar ("trace_func"),
allocate_value (builtin_type_void));
if (traceframe_fun == NULL
|| SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
clear_internalvar (lookup_internalvar ("trace_func"));
else
{
len = strlen (SYMBOL_LINKAGE_NAME (traceframe_fun));
@ -285,10 +277,9 @@ set_traceframe_context (struct frame_info *trace_frame)
/* Save file name as "$trace_file", a debugger variable visible to
users. */
if (traceframe_sal.symtab == NULL ||
traceframe_sal.symtab->filename == NULL)
set_internalvar (lookup_internalvar ("trace_file"),
allocate_value (builtin_type_void));
if (traceframe_sal.symtab == NULL
|| traceframe_sal.symtab->filename == NULL)
clear_internalvar (lookup_internalvar ("trace_file"));
else
{
len = strlen (traceframe_sal.symtab->filename);

2
gdb/valops.c
View File

@ -774,7 +774,7 @@ value_assign (struct value *toval, struct value *fromval)
{
case lval_internalvar:
set_internalvar (VALUE_INTERNALVAR (toval), fromval);
val = value_copy (VALUE_INTERNALVAR (toval)->value);
val = value_copy (fromval);
val = value_change_enclosing_type (val,
value_enclosing_type (fromval));
set_value_embedded_offset (val, value_embedded_offset (fromval));

314
gdb/value.c
View File

@ -878,6 +878,32 @@ show_values (char *num_exp, int from_tty)
The user refers to them with a '$' prefix
that does not appear in the variable names stored internally. */
struct internalvar
{
struct internalvar *next;
char *name;
struct type *type;
/* True if this internalvar is the canonical name for a convenience
function. */
int canonical;
/* If this function is non-NULL, it is used to compute a fresh value
on every access to the internalvar. */
internalvar_make_value make_value;
/* To reduce dependencies on target properties (like byte order) that
may change during the lifetime of an internal variable, we store
simple scalar values as host objects. */
union internalvar_data
{
struct value *v;
struct internal_function *f;
LONGEST l;
CORE_ADDR a;
} u;
};
static struct internalvar *internalvars;
/* If the variable does not already exist create it and give it the value given.
@ -906,7 +932,7 @@ init_if_undefined_command (char* args, int from_tty)
/* Only evaluate the expression if the lvalue is void.
This may still fail if the expresssion is invalid. */
if (TYPE_CODE (value_type (intvar->value)) == TYPE_CODE_VOID)
if (TYPE_CODE (intvar->type) == TYPE_CODE_VOID)
evaluate_expression (expr);
do_cleanups (old_chain);
@ -941,11 +967,9 @@ create_internalvar (const char *name)
struct internalvar *var;
var = (struct internalvar *) xmalloc (sizeof (struct internalvar));
var->name = concat (name, (char *)NULL);
var->value = allocate_value (builtin_type_void);
var->endian = gdbarch_byte_order (current_gdbarch);
var->type = builtin_type_void;
var->make_value = NULL;
var->canonical = 0;
release_value (var->value);
var->next = internalvars;
internalvars = var;
return var;
@ -959,14 +983,8 @@ create_internalvar (const char *name)
struct internalvar *
create_internalvar_type_lazy (char *name, internalvar_make_value fun)
{
struct internalvar *var;
var = (struct internalvar *) xmalloc (sizeof (struct internalvar));
var->name = concat (name, (char *)NULL);
var->value = NULL;
struct internalvar *var = create_internalvar (name);
var->make_value = fun;
var->endian = gdbarch_byte_order (current_gdbarch);
var->next = internalvars;
internalvars = var;
return var;
}
@ -992,14 +1010,31 @@ struct value *
value_of_internalvar (struct internalvar *var)
{
struct value *val;
int i, j;
gdb_byte temp;
if (var->make_value != NULL)
val = (*var->make_value) (var);
else
{
val = value_copy (var->value);
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_VOID:
case TYPE_CODE_INTERNAL_FUNCTION:
val = allocate_value (var->type);
break;
case TYPE_CODE_INT:
val = value_from_longest (var->type, var->u.l);
break;
case TYPE_CODE_PTR:
val = value_from_pointer (var->type, var->u.a);
break;
default:
val = value_copy (var->u.v);
break;
}
if (value_lazy (val))
value_fetch_lazy (val);
@ -1013,127 +1048,210 @@ value_of_internalvar (struct internalvar *var)
assignments to them don't just replace the previous value
altogether. At the moment, this seems like the behavior we
want. */
if (var->value->lval == lval_computed)
VALUE_LVAL (val) = lval_computed;
else
if (val->lval != lval_computed)
{
VALUE_LVAL (val) = lval_internalvar;
VALUE_INTERNALVAR (val) = var;
}
}
/* Values are always stored in the target's byte order. When connected to a
target this will most likely always be correct, so there's normally no
need to worry about it.
However, internal variables can be set up before the target endian is
known and so may become out of date. Fix it up before anybody sees.
Internal variables usually hold simple scalar values, and we can
correct those. More complex values (e.g. structures and floating
point types) are left alone, because they would be too complicated
to correct. */
if (var->endian != gdbarch_byte_order (current_gdbarch))
{
gdb_byte *array = value_contents_raw (val);
struct type *type = check_typedef (value_enclosing_type (val));
switch (TYPE_CODE (type))
{
case TYPE_CODE_INT:
case TYPE_CODE_PTR:
/* Reverse the bytes. */
for (i = 0, j = TYPE_LENGTH (type) - 1; i < j; i++, j--)
{
temp = array[j];
array[j] = array[i];
array[i] = temp;
}
break;
}
}
return val;
}
int
get_internalvar_integer (struct internalvar *var, LONGEST *result)
{
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_INT:
*result = var->u.l;
return 1;
default:
return 0;
}
}
static int
get_internalvar_function (struct internalvar *var,
struct internal_function **result)
{
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_INTERNAL_FUNCTION:
*result = var->u.f;
return 1;
default:
return 0;
}
}
void
set_internalvar_component (struct internalvar *var, int offset, int bitpos,
int bitsize, struct value *newval)
{
gdb_byte *addr = value_contents_writeable (var->value) + offset;
gdb_byte *addr;
if (bitsize)
modify_field (addr, value_as_long (newval),
bitpos, bitsize);
else
memcpy (addr, value_contents (newval), TYPE_LENGTH (value_type (newval)));
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_VOID:
case TYPE_CODE_INTERNAL_FUNCTION:
case TYPE_CODE_INT:
case TYPE_CODE_PTR:
/* We can never get a component of a basic type. */
internal_error (__FILE__, __LINE__, "set_internalvar_component");
default:
addr = value_contents_writeable (var->u.v);
if (bitsize)
modify_field (addr + offset,
value_as_long (newval), bitpos, bitsize);
else
memcpy (addr + offset, value_contents (newval),
TYPE_LENGTH (value_type (newval)));
break;
}
}
void
set_internalvar (struct internalvar *var, struct value *val)
{
struct value *newval;
struct type *new_type = check_typedef (value_type (val));
union internalvar_data new_data = { 0 };
if (var->canonical)
error (_("Cannot overwrite convenience function %s"), var->name);
newval = value_copy (val);
newval->modifiable = 1;
/* Prepare new contents. */
switch (TYPE_CODE (new_type))
{
case TYPE_CODE_VOID:
break;
/* Force the value to be fetched from the target now, to avoid problems
later when this internalvar is referenced and the target is gone or
has changed. */
if (value_lazy (newval))
value_fetch_lazy (newval);
case TYPE_CODE_INTERNAL_FUNCTION:
gdb_assert (VALUE_LVAL (val) == lval_internalvar);
get_internalvar_function (VALUE_INTERNALVAR (val), &new_data.f);
break;
/* Begin code which must not call error(). If var->value points to
something free'd, an error() obviously leaves a dangling pointer.
But we also get a dangling pointer if var->value points to
something in the value chain (i.e., before release_value is
called), because after the error free_all_values will get called before
long. */
value_free (var->value);
var->value = newval;
var->endian = gdbarch_byte_order (current_gdbarch);
release_value (newval);
case TYPE_CODE_INT:
new_data.l = value_as_long (val);
break;
case TYPE_CODE_PTR:
new_data.a = value_as_address (val);
break;
default:
new_data.v = value_copy (val);
new_data.v->modifiable = 1;
/* Force the value to be fetched from the target now, to avoid problems
later when this internalvar is referenced and the target is gone or
has changed. */
if (value_lazy (new_data.v))
value_fetch_lazy (new_data.v);
/* Release the value from the value chain to prevent it from being
deleted by free_all_values. From here on this function should not
call error () until new_data is installed into the var->u to avoid
leaking memory. */
release_value (new_data.v);
break;
}
/* Clean up old contents. */
clear_internalvar (var);
/* Switch over. */
var->type = new_type;
var->u = new_data;
/* End code which must not call error(). */
}
void
set_internalvar_integer (struct internalvar *var, LONGEST l)
{
/* Clean up old contents. */
clear_internalvar (var);
/* Use a platform-independent 32-bit integer type. */
var->type = builtin_type_int32;
var->u.l = l;
}
static void
set_internalvar_function (struct internalvar *var, struct internal_function *f)
{
/* Clean up old contents. */
clear_internalvar (var);
var->type = internal_fn_type;
var->u.f = f;
}
void
clear_internalvar (struct internalvar *var)
{
/* Clean up old contents. */
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_VOID:
case TYPE_CODE_INTERNAL_FUNCTION:
case TYPE_CODE_INT:
case TYPE_CODE_PTR:
break;
default:
value_free (var->u.v);
break;
}
/* Set to void type. */
var->type = builtin_type_void;
}
char *
internalvar_name (struct internalvar *var)
{
return var->name;
}
static struct value *
value_create_internal_function (const char *name,
internal_function_fn handler,
void *cookie)
static struct internal_function *
create_internal_function (const char *name,
internal_function_fn handler, void *cookie)
{
struct value *result = allocate_value (internal_fn_type);
gdb_byte *addr = value_contents_writeable (result);
struct internal_function **fnp = (struct internal_function **) addr;
struct internal_function *ifn = XNEW (struct internal_function);
ifn->name = xstrdup (name);
ifn->handler = handler;
ifn->cookie = cookie;
*fnp = ifn;
return result;
return ifn;
}
char *
value_internal_function_name (struct value *val)
{
gdb_byte *addr = value_contents_writeable (val);
struct internal_function *ifn = * (struct internal_function **) addr;
struct internal_function *ifn;
int result;
gdb_assert (VALUE_LVAL (val) == lval_internalvar);
result = get_internalvar_function (VALUE_INTERNALVAR (val), &ifn);
gdb_assert (result);
return ifn->name;
}
struct value *
call_internal_function (struct value *func, int argc, struct value **argv)
{
gdb_byte *addr = value_contents_writeable (func);
struct internal_function *ifn = * (struct internal_function **) addr;
struct internal_function *ifn;
int result;
gdb_assert (VALUE_LVAL (func) == lval_internalvar);
result = get_internalvar_function (VALUE_INTERNALVAR (func), &ifn);
gdb_assert (result);
return (*ifn->handler) (ifn->cookie, argc, argv);
}
@ -1165,9 +1283,11 @@ add_internal_function (const char *name, const char *doc,
internal_function_fn handler, void *cookie)
{
struct cmd_list_element *cmd;
struct internal_function *ifn;
struct internalvar *var = lookup_internalvar (name);
struct value *fnval = value_create_internal_function (name, handler, cookie);
set_internalvar (var, fnval);
ifn = create_internal_function (name, handler, cookie);
set_internalvar_function (var, ifn);
var->canonical = 1;
cmd = add_cmd (xstrdup (name), no_class, function_command, (char *) doc,
@ -1216,8 +1336,23 @@ preserve_values (struct objfile *objfile)
preserve_one_value (cur->values[i], objfile, copied_types);
for (var = internalvars; var; var = var->next)
if (var->value)
preserve_one_value (var->value, objfile, copied_types);
{
if (TYPE_OBJFILE (var->type) == objfile)
var->type = copy_type_recursive (objfile, var->type, copied_types);
switch (TYPE_CODE (var->type))
{
case TYPE_CODE_VOID:
case TYPE_CODE_INTERNAL_FUNCTION:
case TYPE_CODE_INT:
case TYPE_CODE_PTR:
break;
default:
preserve_one_value (var->u.v, objfile, copied_types);
break;
}
}
for (val = values_in_python; val; val = val->next)
preserve_one_value (val, objfile, copied_types);
@ -2067,6 +2202,5 @@ Placeholder command for showing help on convenience functions."),
internal_fn_type = alloc_type (NULL);
TYPE_CODE (internal_fn_type) = TYPE_CODE_INTERNAL_FUNCTION;
TYPE_LENGTH (internal_fn_type) = sizeof (struct internal_function *);
TYPE_NAME (internal_fn_type) = "<internal function>";
}

25
gdb/value.h
View File

@ -309,23 +309,6 @@ extern struct value *coerce_ref (struct value *value);
extern struct value *coerce_array (struct value *value);
/* Internal variables (variables for convenience of use of debugger)
are recorded as a chain of these structures. */
typedef struct value * (*internalvar_make_value) (struct internalvar *);
struct internalvar
{
struct internalvar *next;
char *name;
struct value *value;
internalvar_make_value make_value;
int endian;
/* True if this internalvar is the canonical name for a convenience
function. */
int canonical;
};
#include "symtab.h"
@ -538,8 +521,14 @@ extern struct value *access_value_history (int num);
extern struct value *value_of_internalvar (struct internalvar *var);
extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
extern void set_internalvar (struct internalvar *var, struct value *val);
extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
extern void clear_internalvar (struct internalvar *var);
extern void set_internalvar_component (struct internalvar *var,
int offset,
int bitpos, int bitsize,
@ -549,6 +538,8 @@ extern struct internalvar *lookup_only_internalvar (const char *name);
extern struct internalvar *create_internalvar (const char *name);
typedef struct value * (*internalvar_make_value) (struct internalvar *);
extern struct internalvar *
create_internalvar_type_lazy (char *name, internalvar_make_value fun);