Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _CORE_C_ | |
23 | #define _CORE_C_ | |
24 | ||
25 | #include "basics.h" | |
26 | #include "device_table.h" | |
27 | #include "corefile.h" | |
28 | ||
29 | typedef struct _core_mapping core_mapping; | |
30 | struct _core_mapping { | |
31 | /* common */ | |
32 | int level; | |
33 | int space; | |
34 | unsigned_word base; | |
35 | unsigned_word bound; | |
36 | unsigned nr_bytes; | |
37 | /* memory map */ | |
38 | void *free_buffer; | |
39 | void *buffer; | |
40 | /* callback map */ | |
41 | device *device; | |
42 | /* growth */ | |
43 | core_mapping *next; | |
44 | }; | |
45 | ||
46 | struct _core_map { | |
47 | core_mapping *first; | |
48 | }; | |
49 | ||
50 | typedef enum { | |
51 | core_read_map, | |
52 | core_write_map, | |
53 | core_execute_map, | |
54 | nr_core_map_types, | |
55 | } core_map_types; | |
56 | ||
57 | struct _core { | |
58 | core_map map[nr_core_map_types]; | |
59 | }; | |
60 | ||
61 | ||
62 | INLINE_CORE\ | |
63 | (core *) | |
64 | core_create(void) | |
65 | { | |
66 | return ZALLOC(core); | |
67 | } | |
68 | ||
69 | ||
70 | INLINE_CORE\ | |
71 | (core *) | |
72 | core_from_device(device *root) | |
73 | { | |
74 | root = device_root(root); | |
75 | ASSERT(strcmp(device_name(root), "core") == 0); | |
76 | return device_data(root); | |
77 | } | |
78 | ||
79 | ||
80 | INLINE_CORE\ | |
81 | (void) | |
82 | core_init(core *memory) | |
83 | { | |
84 | core_map_types access_type; | |
85 | for (access_type = 0; | |
86 | access_type < nr_core_map_types; | |
87 | access_type++) { | |
88 | core_map *map = memory->map + access_type; | |
89 | /* blow away old mappings */ | |
90 | core_mapping *curr = map->first; | |
91 | while (curr != NULL) { | |
92 | core_mapping *tbd = curr; | |
93 | curr = curr->next; | |
94 | if (tbd->free_buffer != NULL) { | |
95 | ASSERT(tbd->buffer != NULL); | |
96 | zfree(tbd->free_buffer); | |
97 | } | |
98 | zfree(tbd); | |
99 | } | |
100 | map->first = NULL; | |
101 | } | |
102 | } | |
103 | ||
104 | ||
105 | ||
106 | /* the core has three sub mappings that the more efficient | |
107 | read/write fixed quantity functions use */ | |
108 | ||
109 | INLINE_CORE\ | |
110 | (core_map *) | |
111 | core_readable(core *memory) | |
112 | { | |
113 | return memory->map + core_read_map; | |
114 | } | |
115 | ||
116 | INLINE_CORE\ | |
117 | (core_map *) | |
118 | core_writeable(core *memory) | |
119 | { | |
120 | return memory->map + core_write_map; | |
121 | } | |
122 | ||
123 | INLINE_CORE\ | |
124 | (core_map *) | |
125 | core_executable(core *memory) | |
126 | { | |
127 | return memory->map + core_execute_map; | |
128 | } | |
129 | ||
130 | ||
131 | ||
132 | STATIC_INLINE_CORE\ | |
133 | (core_mapping *) | |
134 | new_core_mapping(attach_type attach, | |
135 | int space, | |
136 | unsigned_word addr, | |
137 | unsigned nr_bytes, | |
138 | device *device, | |
139 | void *buffer, | |
140 | void *free_buffer) | |
141 | { | |
142 | core_mapping *new_mapping = ZALLOC(core_mapping); | |
143 | /* common */ | |
144 | new_mapping->level = attach; | |
145 | new_mapping->space = space; | |
146 | new_mapping->base = addr; | |
147 | new_mapping->nr_bytes = nr_bytes; | |
148 | new_mapping->bound = addr + (nr_bytes - 1); | |
149 | if (attach == attach_raw_memory) { | |
150 | new_mapping->buffer = buffer; | |
151 | new_mapping->free_buffer = free_buffer; | |
152 | } | |
153 | else if (attach >= attach_callback) { | |
154 | new_mapping->device = device; | |
155 | } | |
156 | else { | |
157 | error("new_core_mapping() - internal error - unknown attach type %d\n", | |
158 | attach); | |
159 | } | |
160 | return new_mapping; | |
161 | } | |
162 | ||
163 | ||
164 | STATIC_INLINE_CORE\ | |
165 | (void) | |
166 | core_map_attach(core_map *access_map, | |
167 | attach_type attach, | |
168 | int space, | |
169 | unsigned_word addr, | |
170 | unsigned nr_bytes, /* host limited */ | |
171 | device *client, /*callback/default*/ | |
172 | void *buffer, /*raw_memory*/ | |
173 | void *free_buffer) /*raw_memory*/ | |
174 | { | |
175 | /* find the insertion point for this additional mapping and insert */ | |
176 | core_mapping *next_mapping; | |
177 | core_mapping **last_mapping; | |
178 | ||
179 | /* actually do occasionally get a zero size map */ | |
180 | if (nr_bytes == 0) { | |
181 | device_error(client, "called on core_map_attach() with size zero"); | |
182 | } | |
183 | ||
184 | /* find the insertion point (between last/next) */ | |
185 | next_mapping = access_map->first; | |
186 | last_mapping = &access_map->first; | |
187 | while(next_mapping != NULL | |
188 | && (next_mapping->level < attach | |
189 | || (next_mapping->level == attach | |
190 | && next_mapping->bound < addr))) { | |
191 | /* provided levels are the same */ | |
192 | /* assert: next_mapping->base > all bases before next_mapping */ | |
193 | /* assert: next_mapping->bound >= all bounds before next_mapping */ | |
194 | last_mapping = &next_mapping->next; | |
195 | next_mapping = next_mapping->next; | |
196 | } | |
197 | ||
198 | /* check insertion point correct */ | |
199 | ASSERT(next_mapping == NULL || next_mapping->level >= attach); | |
200 | if (next_mapping != NULL && next_mapping->level == attach | |
201 | && next_mapping->base < (addr + (nr_bytes - 1))) { | |
202 | device_error(client, "map overlap when attaching %d:0x%lx (%ld)", | |
203 | space, (long)addr, (long)nr_bytes); | |
204 | } | |
205 | ||
206 | /* create/insert the new mapping */ | |
207 | *last_mapping = new_core_mapping(attach, | |
208 | space, addr, nr_bytes, | |
209 | client, buffer, free_buffer); | |
210 | (*last_mapping)->next = next_mapping; | |
211 | } | |
212 | ||
213 | ||
214 | INLINE_CORE\ | |
215 | (void) | |
216 | core_attach(core *memory, | |
217 | attach_type attach, | |
218 | int space, | |
219 | access_type access, | |
220 | unsigned_word addr, | |
221 | unsigned nr_bytes, /* host limited */ | |
222 | device *client) /*callback/default*/ | |
223 | { | |
224 | core_map_types access_map; | |
225 | void *buffer; | |
226 | void *free_buffer; | |
227 | if (attach == attach_raw_memory) { | |
228 | /* Padd out the raw buffer to ensure that ADDR starts on a | |
229 | correctly aligned boundary */ | |
230 | int padding = (addr % sizeof (unsigned64)); | |
231 | free_buffer = zalloc(nr_bytes + padding); | |
232 | buffer = (char*)free_buffer + padding; | |
233 | } | |
234 | else { | |
235 | buffer = NULL; | |
236 | free_buffer = &buffer; /* marker for assertion */ | |
237 | } | |
238 | for (access_map = 0; | |
239 | access_map < nr_core_map_types; | |
240 | access_map++) { | |
241 | switch (access_map) { | |
242 | case core_read_map: | |
243 | if (access & access_read) | |
244 | core_map_attach(memory->map + access_map, | |
245 | attach, | |
246 | space, addr, nr_bytes, | |
247 | client, buffer, free_buffer); | |
248 | free_buffer = NULL; | |
249 | break; | |
250 | case core_write_map: | |
251 | if (access & access_write) | |
252 | core_map_attach(memory->map + access_map, | |
253 | attach, | |
254 | space, addr, nr_bytes, | |
255 | client, buffer, free_buffer); | |
256 | free_buffer = NULL; | |
257 | break; | |
258 | case core_execute_map: | |
259 | if (access & access_exec) | |
260 | core_map_attach(memory->map + access_map, | |
261 | attach, | |
262 | space, addr, nr_bytes, | |
263 | client, buffer, free_buffer); | |
264 | free_buffer = NULL; | |
265 | break; | |
266 | default: | |
267 | error("core_attach() internal error\n"); | |
268 | break; | |
269 | } | |
270 | } | |
271 | /* allocated buffer must attach to at least one thing */ | |
272 | ASSERT(free_buffer == NULL); | |
273 | } | |
274 | ||
275 | ||
276 | STATIC_INLINE_CORE\ | |
277 | (core_mapping *) | |
278 | core_map_find_mapping(core_map *map, | |
279 | unsigned_word addr, | |
280 | unsigned nr_bytes, | |
281 | cpu *processor, | |
282 | unsigned_word cia, | |
283 | int abort) /*either 0 or 1 - helps inline */ | |
284 | { | |
285 | core_mapping *mapping = map->first; | |
286 | ASSERT((addr & (nr_bytes - 1)) == 0); /* must be aligned */ | |
287 | ASSERT((addr + (nr_bytes - 1)) >= addr); /* must not wrap */ | |
288 | while (mapping != NULL) { | |
289 | if (addr >= mapping->base | |
290 | && (addr + (nr_bytes - 1)) <= mapping->bound) | |
291 | return mapping; | |
292 | mapping = mapping->next; | |
293 | } | |
294 | if (abort) | |
295 | error("core_find_mapping() - access to unmaped address, attach a default map to handle this - addr=0x%x nr_bytes=0x%x processor=0x%x cia=0x%x\n", | |
296 | addr, nr_bytes, processor, cia); | |
297 | return NULL; | |
298 | } | |
299 | ||
300 | ||
301 | STATIC_INLINE_CORE\ | |
302 | (void *) | |
303 | core_translate(core_mapping *mapping, | |
304 | unsigned_word addr) | |
305 | { | |
306 | return (void *)(((char *)mapping->buffer) + addr - mapping->base); | |
307 | } | |
308 | ||
309 | ||
310 | INLINE_CORE\ | |
311 | (unsigned) | |
312 | core_map_read_buffer(core_map *map, | |
313 | void *buffer, | |
314 | unsigned_word addr, | |
315 | unsigned len) | |
316 | { | |
317 | unsigned count = 0; | |
318 | while (count < len) { | |
319 | unsigned_word raddr = addr + count; | |
320 | core_mapping *mapping = | |
321 | core_map_find_mapping(map, | |
322 | raddr, 1, | |
323 | NULL, /*processor*/ | |
324 | 0, /*cia*/ | |
325 | 0); /*dont-abort*/ | |
326 | if (mapping == NULL) | |
327 | break; | |
328 | if (mapping->device != NULL) { | |
329 | int nr_bytes = len - count; | |
330 | if (raddr + nr_bytes - 1> mapping->bound) | |
331 | nr_bytes = mapping->bound - raddr + 1; | |
332 | if (device_io_read_buffer(mapping->device, | |
333 | (unsigned_1*)buffer + count, | |
334 | mapping->space, | |
335 | raddr, | |
336 | nr_bytes, | |
337 | 0, /*processor*/ | |
338 | 0 /*cpu*/) != nr_bytes) | |
339 | break; | |
340 | count += nr_bytes; | |
341 | } | |
342 | else { | |
343 | ((unsigned_1*)buffer)[count] = | |
344 | *(unsigned_1*)core_translate(mapping, raddr); | |
345 | count += 1; | |
346 | } | |
347 | } | |
348 | return count; | |
349 | } | |
350 | ||
351 | ||
352 | INLINE_CORE\ | |
353 | (unsigned) | |
354 | core_map_write_buffer(core_map *map, | |
355 | const void *buffer, | |
356 | unsigned_word addr, | |
357 | unsigned len) | |
358 | { | |
359 | unsigned count = 0; | |
360 | while (count < len) { | |
361 | unsigned_word raddr = addr + count; | |
362 | core_mapping *mapping = core_map_find_mapping(map, | |
363 | raddr, 1, | |
364 | NULL, /*processor*/ | |
365 | 0, /*cia*/ | |
366 | 0); /*dont-abort*/ | |
367 | if (mapping == NULL) | |
368 | break; | |
369 | if (mapping->device != NULL) { | |
370 | int nr_bytes = len - count; | |
371 | if (raddr + nr_bytes - 1 > mapping->bound) | |
372 | nr_bytes = mapping->bound - raddr + 1; | |
373 | if (device_io_write_buffer(mapping->device, | |
374 | (unsigned_1*)buffer + count, | |
375 | mapping->space, | |
376 | raddr, | |
377 | nr_bytes, | |
378 | 0, /*processor*/ | |
379 | 0 /*cpu*/) != nr_bytes) | |
380 | break; | |
381 | count += nr_bytes; | |
382 | } | |
383 | else { | |
384 | *(unsigned_1*)core_translate(mapping, raddr) = | |
385 | ((unsigned_1*)buffer)[count]; | |
386 | count += 1; | |
387 | } | |
388 | } | |
389 | return count; | |
390 | } | |
391 | ||
392 | ||
393 | /* define the read/write 1/2/4/8/word functions */ | |
394 | ||
395 | #define N 1 | |
396 | #include "corefile-n.h" | |
397 | #undef N | |
398 | ||
399 | #define N 2 | |
400 | #include "corefile-n.h" | |
401 | #undef N | |
402 | ||
403 | #define N 4 | |
404 | #include "corefile-n.h" | |
405 | #undef N | |
406 | ||
407 | #define N 8 | |
408 | #include "corefile-n.h" | |
409 | #undef N | |
410 | ||
411 | #define N word | |
412 | #include "corefile-n.h" | |
413 | #undef N | |
414 | ||
415 | #endif /* _CORE_C_ */ |