| /* The common simulator framework for GDB, the GNU Debugger. |
| |
| Copyright 2002-2021 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/>. */ |
| |
| /* This must come before any other includes. */ |
| #include "defs.h" |
| |
| #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 |
| } |