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