1 /* The common simulator framework for GDB, the GNU Debugger.
3 Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
5 Contributed by Andrew Cagney and Red Hat.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 struct hw_handle_mapping
{
30 struct hw_instance
*ihandle
;
31 struct hw_handle_mapping
*next
;
35 struct hw_handle_data
{
37 struct hw_handle_mapping
*mappings
;
41 create_hw_handle_data (struct hw
*hw
)
43 if (hw_parent (hw
) == NULL
)
45 hw
->handles_of_hw
= HW_ZALLOC (hw
, struct hw_handle_data
);
49 hw
->handles_of_hw
= hw_root (hw
)->handles_of_hw
;
54 delete_hw_handle_data (struct hw
*hw
)
63 hw_handle_init (struct hw
*hw
)
65 struct hw_handle_mapping
*current_map
= db
->mappings
;
66 if (current_map
!= NULL
)
68 db
->nr_mappings
= db
->mappings
->external
;
69 /* verify that the mappings that were not removed are in
70 sequence down to nr 1 */
71 while (current_map
->next
!= NULL
)
73 if (current_map
->external
!= current_map
->next
->external
+ 1)
74 error ("hw_handle: hw_handle database possibly corrupt");
75 current_map
= current_map
->next
;
77 ASSERT (current_map
->next
== NULL
);
78 if (current_map
->external
!= 1)
79 error ("hw_handle: hw_handle database possibly corrupt");
90 hw_handle_ihandle2 (struct hw
*hw
,
93 struct hw_handle_data
*db
= hw
->handles_of_hw
;
94 struct hw_handle_mapping
*current_map
= db
->mappings
;
95 while (current_map
!= NULL
)
97 if (current_map
->external
== external
)
98 return current_map
->ihandle
;
99 current_map
= current_map
->next
;
106 hw_handle_phandle2 (struct hw
*hw
,
109 struct hw_handle_data
*db
= hw
->handles_of_hw
;
110 struct hw_handle_mapping
*current_map
= db
->mappings
;
111 while (current_map
!= NULL
)
113 if (current_map
->external
== external
)
114 return current_map
->phandle
;
115 current_map
= current_map
->next
;
122 hw_handle_2ihandle (struct hw
*hw
,
123 struct hw_instance
*internal
)
125 struct hw_handle_data
*db
= hw
->handles_of_hw
;
126 struct hw_handle_mapping
*current_map
= db
->mappings
;
127 while (current_map
!= NULL
)
129 if (current_map
->ihandle
== internal
)
130 return current_map
->external
;
131 current_map
= current_map
->next
;
138 hw_handle_2phandle (struct hw
*hw
,
141 struct hw_handle_data
*db
= hw
->handles_of_hw
;
142 struct hw_handle_mapping
*current_map
= db
->mappings
;
143 while (current_map
!= NULL
)
145 if (current_map
->phandle
== internal
)
146 return current_map
->external
;
147 current_map
= current_map
->next
;
154 hw_handle_add_ihandle (struct hw
*hw
,
155 struct hw_instance
*internal
)
157 struct hw_handle_data
*db
= hw
->handles_of_hw
;
158 if (hw_handle_2ihandle (hw
, internal
) != 0)
160 hw_abort (hw
, "attempting to add an ihandle already in the data base");
164 /* insert at the front making things in decending order */
165 struct hw_handle_mapping
*new_map
= ZALLOC (struct hw_handle_mapping
);
166 new_map
->next
= db
->mappings
;
167 new_map
->ihandle
= internal
;
168 db
->nr_mappings
+= 1;
169 new_map
->external
= db
->nr_mappings
;
170 db
->mappings
= new_map
;
176 hw_handle_add_phandle (struct hw
*hw
,
179 struct hw_handle_data
*db
= hw
->handles_of_hw
;
180 if (hw_handle_2phandle (hw
, internal
) != 0)
182 hw_abort (hw
, "attempting to add a phandle already in the data base");
186 /* insert at the front making things in decending order */
187 struct hw_handle_mapping
*new_map
= ZALLOC (struct hw_handle_mapping
);
188 new_map
->next
= db
->mappings
;
189 new_map
->phandle
= internal
;
190 db
->nr_mappings
+= 1;
191 new_map
->external
= db
->nr_mappings
;
192 db
->mappings
= new_map
;
198 hw_handle_remove_ihandle (struct hw
*hw
,
199 struct hw_instance
*internal
)
201 struct hw_handle_data
*db
= hw
->handles_of_hw
;
202 struct hw_handle_mapping
**current_map
= &db
->mappings
;
203 while (*current_map
!= NULL
)
205 if ((*current_map
)->ihandle
== internal
)
207 struct hw_handle_mapping
*delete = *current_map
;
208 *current_map
= delete->next
;
212 current_map
= &(*current_map
)->next
;
214 hw_abort (hw
, "attempt to remove nonexistant ihandle");
219 hw_handle_remove_phandle (struct hw
*hw
,
222 struct hw_handle_data
*db
= hw
->handles_of_hw
;
223 struct hw_handle_mapping
**current_map
= &db
->mappings
;
224 while (*current_map
!= NULL
)
226 if ((*current_map
)->phandle
== internal
)
228 struct hw_handle_mapping
*delete = *current_map
;
229 *current_map
= delete->next
;
233 current_map
= &(*current_map
)->next
;
235 hw_abort (hw
, "attempt to remove nonexistant phandle");
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