1 /* This file is part of the program psim.
3 Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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.
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.
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.
26 #include "sim-assert.h"
29 /* "core" module install handler.
30 This is called via sim_module_install to install the "core" subsystem
31 into the simulator. */
35 sim_core_install (SIM_DESC sd)
37 sim_module_add_uninstall_fn (sd, sim_core_uninstall);
38 sim_module_add_init_fn (sd, sim_core_init);
43 /* Uninstall the "core" subsystem from the simulator. */
47 sim_core_uninstall (SIM_DESC sd)
49 /* FIXME: free buffers, etc. */
55 sim_core_init (SIM_DESC sd)
57 sim_core *memory = STATE_CORE(sd);
60 map < nr_sim_core_maps;
62 /* blow away old mappings */
63 sim_core_mapping *curr = memory->map[map].first;
64 while (curr != NULL) {
65 sim_core_mapping *tbd = curr;
67 if (tbd->free_buffer) {
68 SIM_ASSERT(tbd->buffer != NULL);
73 memory->map[map].first = NULL;
80 STATIC_INLINE_SIM_CORE\
82 sim_core_map_to_str (sim_core_maps map)
86 case sim_core_read_map: return "read";
87 case sim_core_write_map: return "write";
88 case sim_core_execute_map: return "exec";
89 default: return "(invalid-map)";
94 STATIC_INLINE_SIM_CORE\
96 new_sim_core_mapping(SIM_DESC sd,
105 sim_core_mapping *new_mapping = ZALLOC(sim_core_mapping);
107 new_mapping->level = attach;
108 new_mapping->space = space;
109 new_mapping->base = addr;
110 new_mapping->nr_bytes = nr_bytes;
111 new_mapping->bound = addr + (nr_bytes - 1);
112 if (attach == attach_raw_memory) {
113 new_mapping->buffer = buffer;
114 new_mapping->free_buffer = free_buffer;
116 else if (attach >= attach_callback) {
117 new_mapping->device = device;
120 sim_io_error (sd, "new_sim_core_mapping - internal error - unknown attach type %d\n",
127 STATIC_INLINE_SIM_CORE\
129 sim_core_map_attach(SIM_DESC sd,
130 sim_core_map *access_map,
134 unsigned nr_bytes, /* host limited */
135 device *client, /*callback/default*/
136 void *buffer, /*raw_memory*/
137 int free_buffer) /*raw_memory*/
139 /* find the insertion point for this additional mapping and then
141 sim_core_mapping *next_mapping;
142 sim_core_mapping **last_mapping;
144 SIM_ASSERT((attach >= attach_callback && client != NULL && buffer == NULL && !free_buffer)
145 || (attach == attach_raw_memory && client == NULL && buffer != NULL));
147 /* actually do occasionally get a zero size map */
150 device_error(client, "called on sim_core_map_attach with size zero");
152 sim_io_error (sd, "called on sim_core_map_attach with size zero");
156 /* find the insertion point (between last/next) */
157 next_mapping = access_map->first;
158 last_mapping = &access_map->first;
159 while(next_mapping != NULL
160 && (next_mapping->level < attach
161 || (next_mapping->level == attach
162 && next_mapping->bound < addr))) {
163 /* provided levels are the same */
164 /* assert: next_mapping->base > all bases before next_mapping */
165 /* assert: next_mapping->bound >= all bounds before next_mapping */
166 last_mapping = &next_mapping->next;
167 next_mapping = next_mapping->next;
170 /* check insertion point correct */
171 SIM_ASSERT(next_mapping == NULL || next_mapping->level >= attach);
172 if (next_mapping != NULL && next_mapping->level == attach
173 && next_mapping->base < (addr + (nr_bytes - 1))) {
175 device_error(client, "map overlap when attaching %d:0x%lx (%ld)",
176 space, (long)addr, (long)nr_bytes);
178 sim_io_error (sd, "map overlap when attaching %d:0x%lx (%ld)",
179 space, (long)addr, (long)nr_bytes);
183 /* create/insert the new mapping */
184 *last_mapping = new_sim_core_mapping(sd,
186 space, addr, nr_bytes,
187 client, buffer, free_buffer);
188 (*last_mapping)->next = next_mapping;
194 sim_core_attach(SIM_DESC sd,
199 unsigned nr_bytes, /* host limited */
201 void *optional_buffer)
203 sim_core *memory = STATE_CORE(sd);
207 if ((access & access_read_write_exec) == 0
208 || (access & ~access_read_write_exec) != 0) {
210 device_error(client, "invalid access for core attach");
212 sim_io_error (sd, "invalid access for core attach");
215 /* verify the attach type */
216 if (attach == attach_raw_memory) {
217 if (optional_buffer == NULL) {
218 buffer = zalloc(nr_bytes);
222 buffer = optional_buffer;
226 else if (attach >= attach_callback) {
232 device_error(client, "sim_core_attach - conflicting buffer and attach arguments");
234 sim_io_error (sd, "sim_core_attach - conflicting buffer and attach arguments");
239 /* attach the region to all applicable access maps */
241 map < nr_sim_core_maps;
244 case sim_core_read_map:
245 if (access & access_read)
246 sim_core_map_attach(sd, &memory->map[map],
248 space, addr, nr_bytes,
249 client, buffer, !buffer_freed);
252 case sim_core_write_map:
253 if (access & access_write)
254 sim_core_map_attach(sd, &memory->map[map],
256 space, addr, nr_bytes,
257 client, buffer, !buffer_freed);
260 case sim_core_execute_map:
261 if (access & access_exec)
262 sim_core_map_attach(sd, &memory->map[map],
264 space, addr, nr_bytes,
265 client, buffer, !buffer_freed);
268 case nr_sim_core_maps:
269 sim_io_error (sd, "sim_core_attach - internal error - bad switch");
276 STATIC_INLINE_SIM_CORE\
278 sim_core_find_mapping(SIM_DESC sd,
282 int abort, /*either 0 or 1 - helps inline */
286 sim_core_mapping *mapping = STATE_CORE (sd)->map[map].first;
287 SIM_ASSERT((addr & (nr_bytes - 1)) == 0); /* must be aligned */
288 SIM_ASSERT((addr + (nr_bytes - 1)) >= addr); /* must not wrap */
289 while (mapping != NULL) {
290 if (addr >= mapping->base
291 && (addr + (nr_bytes - 1)) <= mapping->bound)
293 mapping = mapping->next;
296 sim_io_error (sd, "access to unmaped address 0x%lx (%d bytes)\n",
297 (unsigned long) addr, nr_bytes);
302 STATIC_INLINE_SIM_CORE\
304 sim_core_translate(sim_core_mapping *mapping,
307 return (void *)(((char *)mapping->buffer) + addr - mapping->base);
313 sim_core_read_buffer(SIM_DESC sd,
320 while (count < len) {
321 unsigned_word raddr = addr + count;
322 sim_core_mapping *mapping =
323 sim_core_find_mapping(sd, map,
325 0, NULL, NULL_CIA); /*dont-abort*/
329 if (mapping->device != NULL) {
330 int nr_bytes = len - count;
331 if (raddr + nr_bytes - 1> mapping->bound)
332 nr_bytes = mapping->bound - raddr + 1;
333 if (device_io_read_buffer(mapping->device,
334 (unsigned_1*)buffer + count,
337 nr_bytes) != nr_bytes)
344 ((unsigned_1*)buffer)[count] =
345 *(unsigned_1*)sim_core_translate(mapping, raddr);
355 sim_core_write_buffer(SIM_DESC sd,
362 while (count < len) {
363 unsigned_word raddr = addr + count;
364 sim_core_mapping *mapping = sim_core_find_mapping(sd, map,
366 0, NULL, NULL_CIA); /*dont-abort*/
370 if (WITH_CALLBACK_MEMORY
371 && mapping->device != NULL) {
372 int nr_bytes = len - count;
373 if (raddr + nr_bytes - 1 > mapping->bound)
374 nr_bytes = mapping->bound - raddr + 1;
375 if (device_io_write_buffer(mapping->device,
376 (unsigned_1*)buffer + count,
379 nr_bytes) != nr_bytes)
386 *(unsigned_1*)sim_core_translate(mapping, raddr) =
387 ((unsigned_1*)buffer)[count];
395 /* define the read/write 1/2/4/8/word functions */
398 #include "sim-n-core.h"
402 #include "sim-n-core.h"
406 #include "sim-n-core.h"
410 #include "sim-n-core.h"
414 #include "sim-n-core.h"