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6df01ab8ab
The defs.h header will take care of including the various config.h headers. For now, it's just config.h, but we'll add more when we integrate gnulib in. This header should be used instead of config.h, and should be the first include in every .c file. We won't rely on the old behavior where we expected files to include the port's sim-main.h which then includes the common sim-basics.h which then includes config.h. We have a ton of code that includes things before sim-main.h, and it sometimes needs to be that way. Creating a dedicated header avoids the ordering mess and implicit inclusion that shows up otherwise.
291 lines
7.3 KiB
C
291 lines
7.3 KiB
C
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2021 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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/* This must come before any other includes. */
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#include "defs.h"
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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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