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c906108c | 1 | /* Hardware ports. |
7b6bb8da JB |
2 | Copyright (C) 1998, 2007, 2008, 2009, 2010, 2011 |
3 | Free Software Foundation, Inc. | |
c906108c SS |
4 | Contributed by Andrew Cagney and Cygnus Solutions. |
5 | ||
6 | This file is part of GDB, the GNU debugger. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
10 | the Free Software Foundation; either version 3 of the License, or |
11 | (at your option) any later version. | |
c906108c SS |
12 | |
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
4744ac1b JB |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
20 | |
21 | ||
22 | #include "hw-main.h" | |
23 | #include "hw-base.h" | |
24 | ||
25 | #ifdef HAVE_STDLIB_H | |
26 | #include <stdlib.h> | |
27 | #endif | |
28 | ||
29 | #ifdef HAVE_STRING_H | |
30 | #include <string.h> | |
31 | #else | |
32 | #ifdef HAVE_STRINGS_H | |
33 | #include <strings.h> | |
34 | #endif | |
35 | #endif | |
36 | ||
37 | #include <ctype.h> | |
38 | ||
c906108c | 39 | |
12c4cbd5 MF |
40 | struct hw_port_edge |
41 | { | |
c906108c SS |
42 | int my_port; |
43 | struct hw *dest; | |
44 | int dest_port; | |
45 | struct hw_port_edge *next; | |
46 | object_disposition disposition; | |
47 | }; | |
48 | ||
12c4cbd5 MF |
49 | struct hw_port_data |
50 | { | |
c906108c SS |
51 | hw_port_event_method *to_port_event; |
52 | const struct hw_port_descriptor *ports; | |
53 | struct hw_port_edge *edges; | |
54 | }; | |
55 | ||
12c4cbd5 MF |
56 | const struct hw_port_descriptor empty_hw_ports[] = |
57 | { | |
21cf617c | 58 | { NULL, 0, 0, 0 }, |
c906108c SS |
59 | }; |
60 | ||
61 | static void | |
62 | panic_hw_port_event (struct hw *me, | |
63 | int my_port, | |
64 | struct hw *source, | |
65 | int source_port, | |
66 | int level) | |
67 | { | |
68 | hw_abort (me, "no port method"); | |
69 | } | |
70 | ||
71 | void | |
72 | create_hw_port_data (struct hw *me) | |
73 | { | |
74 | me->ports_of_hw = HW_ZALLOC (me, struct hw_port_data); | |
75 | set_hw_port_event (me, panic_hw_port_event); | |
76 | set_hw_ports (me, empty_hw_ports); | |
77 | } | |
78 | ||
79 | void | |
80 | delete_hw_port_data (struct hw *me) | |
81 | { | |
82 | hw_free (me, me->ports_of_hw); | |
83 | me->ports_of_hw = NULL; | |
84 | } | |
85 | ||
86 | void | |
87 | set_hw_ports (struct hw *me, | |
88 | const struct hw_port_descriptor ports[]) | |
89 | { | |
90 | me->ports_of_hw->ports = ports; | |
91 | } | |
92 | ||
93 | void | |
94 | set_hw_port_event (struct hw *me, | |
95 | hw_port_event_method *port_event) | |
96 | { | |
97 | me->ports_of_hw->to_port_event = port_event; | |
98 | } | |
99 | ||
100 | ||
101 | static void | |
102 | attach_hw_port_edge (struct hw *me, | |
103 | struct hw_port_edge **list, | |
104 | int my_port, | |
105 | struct hw *dest, | |
106 | int dest_port, | |
107 | object_disposition disposition) | |
108 | { | |
109 | struct hw_port_edge *new_edge = HW_ZALLOC (me, struct hw_port_edge); | |
110 | new_edge->my_port = my_port; | |
111 | new_edge->dest = dest; | |
112 | new_edge->dest_port = dest_port; | |
113 | new_edge->next = *list; | |
114 | new_edge->disposition = disposition; | |
115 | *list = new_edge; | |
116 | } | |
117 | ||
118 | ||
119 | static void | |
120 | detach_hw_port_edge (struct hw *me, | |
121 | struct hw_port_edge **list, | |
122 | int my_port, | |
123 | struct hw *dest, | |
124 | int dest_port) | |
125 | { | |
126 | while (*list != NULL) | |
127 | { | |
128 | struct hw_port_edge *old_edge = *list; | |
129 | if (old_edge->dest == dest | |
130 | && old_edge->dest_port == dest_port | |
131 | && old_edge->my_port == my_port) | |
132 | { | |
133 | if (old_edge->disposition == permenant_object) | |
134 | hw_abort (me, "attempt to delete permenant port edge"); | |
135 | *list = old_edge->next; | |
136 | hw_free (me, old_edge); | |
137 | return; | |
138 | } | |
139 | } | |
140 | hw_abort (me, "attempt to delete unattached port"); | |
141 | } | |
142 | ||
143 | ||
144 | #if 0 | |
145 | static void | |
146 | clean_hw_port_edges (struct hw_port_edge **list) | |
147 | { | |
148 | while (*list != NULL) | |
149 | { | |
150 | struct hw_port_edge *old_edge = *list; | |
151 | switch (old_edge->disposition) | |
152 | { | |
153 | case permenant_object: | |
154 | list = &old_edge->next; | |
155 | break; | |
156 | case temporary_object: | |
157 | *list = old_edge->next; | |
158 | hw_free (me, old_edge); | |
159 | break; | |
160 | } | |
161 | } | |
162 | } | |
163 | #endif | |
164 | ||
165 | ||
166 | /* Ports: */ | |
167 | ||
168 | void | |
169 | hw_port_event (struct hw *me, | |
170 | int my_port, | |
171 | int level) | |
172 | { | |
173 | int found_an_edge = 0; | |
174 | struct hw_port_edge *edge; | |
175 | /* device's lines directly connected */ | |
176 | for (edge = me->ports_of_hw->edges; | |
177 | edge != NULL; | |
178 | edge = edge->next) | |
179 | { | |
180 | if (edge->my_port == my_port) | |
181 | { | |
182 | edge->dest->ports_of_hw->to_port_event (edge->dest, | |
183 | edge->dest_port, | |
184 | me, | |
185 | my_port, | |
186 | level); | |
187 | found_an_edge = 1; | |
188 | } | |
189 | } | |
190 | if (!found_an_edge) | |
191 | hw_abort (me, "No edge for port %d", my_port); | |
192 | } | |
193 | ||
194 | ||
195 | void | |
196 | hw_port_attach (struct hw *me, | |
197 | int my_port, | |
198 | struct hw *dest, | |
199 | int dest_port, | |
200 | object_disposition disposition) | |
201 | { | |
202 | attach_hw_port_edge (me, | |
203 | &me->ports_of_hw->edges, | |
204 | my_port, | |
205 | dest, | |
206 | dest_port, | |
207 | disposition); | |
208 | } | |
209 | ||
210 | ||
211 | void | |
212 | hw_port_detach (struct hw *me, | |
213 | int my_port, | |
214 | struct hw *dest, | |
215 | int dest_port) | |
216 | { | |
217 | detach_hw_port_edge (me, | |
218 | &me->ports_of_hw->edges, | |
219 | my_port, | |
220 | dest, | |
221 | dest_port); | |
222 | } | |
223 | ||
224 | ||
225 | void | |
226 | hw_port_traverse (struct hw *me, | |
227 | hw_port_traverse_function *handler, | |
228 | void *data) | |
229 | { | |
230 | struct hw_port_edge *port_edge; | |
231 | for (port_edge = me->ports_of_hw->edges; | |
232 | port_edge != NULL; | |
233 | port_edge = port_edge->next) | |
234 | { | |
235 | handler (me, port_edge->my_port, | |
236 | port_edge->dest, port_edge->dest_port, | |
237 | data); | |
238 | } | |
239 | } | |
240 | ||
241 | ||
242 | int | |
243 | hw_port_decode (struct hw *me, | |
244 | const char *port_name, | |
245 | port_direction direction) | |
246 | { | |
247 | if (port_name == NULL || port_name[0] == '\0') | |
248 | return 0; | |
34b47c38 | 249 | if (isdigit (port_name[0])) |
c906108c SS |
250 | { |
251 | return strtoul (port_name, NULL, 0); | |
252 | } | |
253 | else | |
254 | { | |
255 | const struct hw_port_descriptor *ports = | |
256 | me->ports_of_hw->ports; | |
028f6515 | 257 | if (ports != NULL) |
c906108c SS |
258 | { |
259 | while (ports->name != NULL) | |
260 | { | |
261 | if (ports->direction == bidirect_port | |
262 | || ports->direction == direction) | |
263 | { | |
264 | if (ports->nr_ports > 0) | |
265 | { | |
266 | int len = strlen (ports->name); | |
267 | if (strncmp (port_name, ports->name, len) == 0) | |
268 | { | |
269 | if (port_name[len] == '\0') | |
270 | return ports->number; | |
34b47c38 | 271 | else if (isdigit (port_name[len])) |
c906108c SS |
272 | { |
273 | int port = (ports->number | |
274 | + strtoul (&port_name[len], NULL, 0)); | |
275 | if (port >= ports->number + ports->nr_ports) | |
276 | hw_abort (me, | |
277 | "Port %s out of range", | |
278 | port_name); | |
279 | return port; | |
280 | } | |
281 | } | |
282 | } | |
283 | else if (strcmp (port_name, ports->name) == 0) | |
284 | return ports->number; | |
285 | } | |
286 | ports++; | |
287 | } | |
288 | } | |
289 | } | |
290 | hw_abort (me, "Unreconized port %s", port_name); | |
291 | return 0; | |
292 | } | |
293 | ||
294 | ||
295 | int | |
296 | hw_port_encode (struct hw *me, | |
297 | int port_number, | |
298 | char *buf, | |
299 | int sizeof_buf, | |
300 | port_direction direction) | |
301 | { | |
302 | const struct hw_port_descriptor *ports = NULL; | |
303 | ports = me->ports_of_hw->ports; | |
304 | if (ports != NULL) { | |
305 | while (ports->name != NULL) | |
306 | { | |
307 | if (ports->direction == bidirect_port | |
308 | || ports->direction == direction) | |
309 | { | |
310 | if (ports->nr_ports > 0) | |
311 | { | |
312 | if (port_number >= ports->number | |
313 | && port_number < ports->number + ports->nr_ports) | |
314 | { | |
315 | strcpy (buf, ports->name); | |
34b47c38 | 316 | sprintf (buf + strlen (buf), "%d", port_number - ports->number); |
c906108c SS |
317 | if (strlen (buf) >= sizeof_buf) |
318 | hw_abort (me, "hw_port_encode: buffer overflow"); | |
319 | return strlen (buf); | |
320 | } | |
321 | } | |
322 | else | |
323 | { | |
324 | if (ports->number == port_number) | |
325 | { | |
34b47c38 | 326 | if (strlen (ports->name) >= sizeof_buf) |
c906108c | 327 | hw_abort (me, "hw_port_encode: buffer overflow"); |
34b47c38 MF |
328 | strcpy (buf, ports->name); |
329 | return strlen (buf); | |
c906108c SS |
330 | } |
331 | } | |
332 | } | |
333 | ports++; | |
334 | } | |
335 | } | |
336 | sprintf (buf, "%d", port_number); | |
34b47c38 | 337 | if (strlen (buf) >= sizeof_buf) |
c906108c | 338 | hw_abort (me, "hw_port_encode: buffer overflow"); |
34b47c38 | 339 | return strlen (buf); |
c906108c | 340 | } |