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/* The common simulator framework for GDB, the GNU Debugger.
Copyright 2002-2017 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"
struct hw_handle_mapping
{
cell_word external;
struct hw *phandle;
struct hw_instance *ihandle;
struct hw_handle_mapping *next;
};
struct hw_handle_data
{
int nr_mappings;
struct hw_handle_mapping *mappings;
};
void
create_hw_handle_data (struct hw *hw)
{
if (hw_parent (hw) == NULL)
{
hw->handles_of_hw = HW_ZALLOC (hw, struct hw_handle_data);
}
else
{
hw->handles_of_hw = hw_root (hw)->handles_of_hw;
}
}
void
delete_hw_handle_data (struct hw *hw)
{
/* NULL */
}
#if 0
void
hw_handle_init (struct hw *hw)
{
struct hw_handle_mapping *current_map = db->mappings;
if (current_map != NULL)
{
db->nr_mappings = db->mappings->external;
/* verify that the mappings that were not removed are in
sequence down to nr 1 */
while (current_map->next != NULL)
{
if (current_map->external != current_map->next->external + 1)
error ("hw_handle: hw_handle database possibly corrupt");
current_map = current_map->next;
}
ASSERT (current_map->next == NULL);
if (current_map->external != 1)
error ("hw_handle: hw_handle database possibly corrupt");
}
else
{
db->nr_mappings = 0;
}
}
#endif
struct hw_instance *
hw_handle_ihandle2 (struct hw *hw,
cell_word external)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping *current_map = db->mappings;
while (current_map != NULL)
{
if (current_map->external == external)
return current_map->ihandle;
current_map = current_map->next;
}
return (void*)0;
}
struct hw *
hw_handle_phandle2 (struct hw *hw,
cell_word external)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping *current_map = db->mappings;
while (current_map != NULL)
{
if (current_map->external == external)
return current_map->phandle;
current_map = current_map->next;
}
return (void*)0;
}
cell_word
hw_handle_2ihandle (struct hw *hw,
struct hw_instance *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping *current_map = db->mappings;
while (current_map != NULL)
{
if (current_map->ihandle == internal)
return current_map->external;
current_map = current_map->next;
}
return 0;
}
cell_word
hw_handle_2phandle (struct hw *hw,
struct hw *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping *current_map = db->mappings;
while (current_map != NULL)
{
if (current_map->phandle == internal)
return current_map->external;
current_map = current_map->next;
}
return 0;
}
void
hw_handle_add_ihandle (struct hw *hw,
struct hw_instance *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
if (hw_handle_2ihandle (hw, internal) != 0)
{
hw_abort (hw, "attempting to add an ihandle already in the data base");
}
else
{
/* insert at the front making things in decending order */
struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
new_map->next = db->mappings;
new_map->ihandle = internal;
db->nr_mappings += 1;
new_map->external = db->nr_mappings;
db->mappings = new_map;
}
}
void
hw_handle_add_phandle (struct hw *hw,
struct hw *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
if (hw_handle_2phandle (hw, internal) != 0)
{
hw_abort (hw, "attempting to add a phandle already in the data base");
}
else
{
/* insert at the front making things in decending order */
struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
new_map->next = db->mappings;
new_map->phandle = internal;
db->nr_mappings += 1;
new_map->external = db->nr_mappings;
db->mappings = new_map;
}
}
void
hw_handle_remove_ihandle (struct hw *hw,
struct hw_instance *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping **current_map = &db->mappings;
while (*current_map != NULL)
{
if ((*current_map)->ihandle == internal)
{
struct hw_handle_mapping *delete = *current_map;
*current_map = delete->next;
free (delete);
return;
}
current_map = &(*current_map)->next;
}
hw_abort (hw, "attempt to remove nonexistant ihandle");
}
void
hw_handle_remove_phandle (struct hw *hw,
struct hw *internal)
{
struct hw_handle_data *db = hw->handles_of_hw;
struct hw_handle_mapping **current_map = &db->mappings;
while (*current_map != NULL)
{
if ((*current_map)->phandle == internal)
{
struct hw_handle_mapping *delete = *current_map;
*current_map = delete->next;
free (delete);
return;
}
current_map = &(*current_map)->next;
}
hw_abort (hw, "attempt to remove nonexistant phandle");
}
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