binutils-gdb/sim/common/hw-instances.c

289 lines
7.2 KiB
C

/* The common simulator framework for GDB, the GNU Debugger.
Copyright 2002-2015 Free Software Foundation, Inc.
Contributed by Andrew Cagney and Red Hat.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "hw-main.h"
#include "hw-base.h"
#include "sim-io.h"
#include "sim-assert.h"
struct hw_instance_data
{
hw_finish_instance_method *to_finish;
struct hw_instance *instances;
};
static hw_finish_instance_method abort_hw_finish_instance;
void
create_hw_instance_data (struct hw *me)
{
me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
set_hw_finish_instance (me, abort_hw_finish_instance);
}
void
delete_hw_instance_data (struct hw *me)
{
/* NOP */
}
static void
abort_hw_finish_instance (struct hw *hw,
struct hw_instance *instance)
{
hw_abort (hw, "no instance finish method");
}
void
set_hw_finish_instance (struct hw *me,
hw_finish_instance_method *finish)
{
me->instances_of_hw->to_finish = finish;
}
#if 0
void
clean_hw_instances (struct hw *me)
{
struct hw_instance **instance = &me->instances;
while (*instance != NULL)
{
struct hw_instance *old_instance = *instance;
hw_instance_delete (old_instance);
instance = &me->instances;
}
}
#endif
void
hw_instance_delete (struct hw_instance *instance)
{
#if 1
hw_abort (hw_instance_hw (instance), "not implemented");
#else
struct hw *me = hw_instance_hw (instance);
if (instance->to_instance_delete == NULL)
hw_abort (me, "no delete method");
instance->method->delete (instance);
if (instance->args != NULL)
free (instance->args);
if (instance->path != NULL)
free (instance->path);
if (instance->child == NULL)
{
/* only remove leaf nodes */
struct hw_instance **curr = &me->instances;
while (*curr != instance)
{
ASSERT (*curr != NULL);
curr = &(*curr)->next;
}
*curr = instance->next;
}
else
{
/* check it isn't in the instance list */
struct hw_instance *curr = me->instances;
while (curr != NULL)
{
ASSERT (curr != instance);
curr = curr->next;
}
/* unlink the child */
ASSERT (instance->child->parent == instance);
instance->child->parent = NULL;
}
cap_remove (me->ihandles, instance);
free (instance);
#endif
}
static int
panic_hw_instance_read (struct hw_instance *instance,
void *addr,
unsigned_word len)
{
hw_abort (hw_instance_hw (instance), "no read method");
return -1;
}
static int
panic_hw_instance_write (struct hw_instance *instance,
const void *addr,
unsigned_word len)
{
hw_abort (hw_instance_hw (instance), "no write method");
return -1;
}
static int
panic_hw_instance_seek (struct hw_instance *instance,
unsigned_word pos_hi,
unsigned_word pos_lo)
{
hw_abort (hw_instance_hw (instance), "no seek method");
return -1;
}
int
hw_instance_call_method (struct hw_instance *instance,
const char *method_name,
int n_stack_args,
unsigned_cell stack_args[/*n_stack_args*/],
int n_stack_returns,
unsigned_cell stack_returns[/*n_stack_args*/])
{
#if 1
hw_abort (hw_instance_hw (instance), "not implemented");
return -1;
#else
struct hw *me = instance->owner;
const hw_instance_methods *method = instance->method->methods;
if (method == NULL)
{
hw_abort (me, "no methods (want %s)", method_name);
}
while (method->name != NULL)
{
if (strcmp (method->name, method_name) == 0)
{
return method->method (instance,
n_stack_args, stack_args,
n_stack_returns, stack_returns);
}
method++;
}
hw_abort (me, "no %s method", method_name);
return 0;
#endif
}
#define set_hw_instance_read(instance, method)\
((instance)->to_instance_read = (method))
#define set_hw_instance_write(instance, method)\
((instance)->to_instance_write = (method))
#define set_hw_instance_seek(instance, method)\
((instance)->to_instance_seek = (method))
#if 0
static void
set_hw_instance_finish (struct hw *me,
hw_instance_finish_method *method)
{
if (me->instances_of_hw == NULL)
me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
me->instances_of_hw->to_finish = method;
}
#endif
struct hw_instance *
hw_instance_create (struct hw *me,
struct hw_instance *parent,
const char *path,
const char *args)
{
struct hw_instance *instance = ZALLOC (struct hw_instance);
/*instance->unit*/
/* link this instance into the devices list */
instance->hw_of_instance = me;
instance->parent_of_instance = NULL;
/* link this instance into the front of the devices instance list */
instance->sibling_of_instance = me->instances_of_hw->instances;
me->instances_of_hw->instances = instance;
if (parent != NULL)
{
ASSERT (parent->child_of_instance == NULL);
parent->child_of_instance = instance;
instance->parent_of_instance = parent;
}
instance->args_of_instance = hw_strdup (me, args);
instance->path_of_instance = hw_strdup (me, path);
set_hw_instance_read (instance, panic_hw_instance_read);
set_hw_instance_write (instance, panic_hw_instance_write);
set_hw_instance_seek (instance, panic_hw_instance_seek);
hw_handle_add_ihandle (me, instance);
me->instances_of_hw->to_finish (me, instance);
return instance;
}
struct hw_instance *
hw_instance_interceed (struct hw_instance *parent,
const char *path,
const char *args)
{
#if 1
return NULL;
#else
struct hw_instance *instance = ZALLOC (struct hw_instance);
/*instance->unit*/
/* link this instance into the devices list */
if (me != NULL)
{
ASSERT (parent == NULL);
instance->hw_of_instance = me;
instance->parent_of_instance = NULL;
/* link this instance into the front of the devices instance list */
instance->sibling_of_instance = me->instances_of_hw->instances;
me->instances_of_hw->instances = instance;
}
if (parent != NULL)
{
struct hw_instance **previous;
ASSERT (parent->child_of_instance == NULL);
parent->child_of_instance = instance;
instance->owner = parent->owner;
instance->parent_of_instance = parent;
/* in the devices instance list replace the parent instance with
this one */
instance->next = parent->next;
/* replace parent with this new node */
previous = &instance->owner->instances;
while (*previous != parent)
{
ASSERT (*previous != NULL);
previous = &(*previous)->next;
}
*previous = instance;
}
instance->data = data;
instance->args = (args == NULL ? NULL : (char *) strdup (args));
instance->path = (path == NULL ? NULL : (char *) strdup (path));
cap_add (instance->owner->ihandles, instance);
return instance;
#endif
}