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_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
38 sim_module_add_uninstall_fn (sd, sim_core_uninstall);
39 sim_module_add_init_fn (sd, sim_core_init);
44 /* Uninstall the "core" subsystem from the simulator. */
48 sim_core_uninstall (SIM_DESC sd)
50 /* FIXME: free buffers, etc. */
56 sim_core_init (SIM_DESC sd)
58 sim_core *memory = STATE_CORE(sd);
61 map < nr_sim_core_maps;
63 /* blow away old mappings */
64 sim_core_mapping *curr = memory->map[map].first;
65 while (curr != NULL) {
66 sim_core_mapping *tbd = curr;
68 if (tbd->free_buffer) {
69 SIM_ASSERT(tbd->buffer != NULL);
74 memory->map[map].first = NULL;
81 #ifndef SIM_CORE_SIGNAL
82 #define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \
83 sim_core_signal ((SD), (CPU), (CIA), (MAP), (NR_BYTES), (ADDR), (TRANSFER), (ERROR))
86 sim_core_signal (SIM_DESC sd,
92 transfer_type transfer,
95 const char *copy = (transfer == read_transfer ? "read" : "write");
98 case sim_core_unmapped_signal:
99 sim_engine_abort (sd, cpu, cia, "sim-core: %d byte %s to unmaped address 0x%lx",
100 nr_bytes, copy, (unsigned long) addr);
102 case sim_core_unaligned_signal:
103 sim_engine_abort (sd, cpu, cia, "sim-core: %d byte misaligned %s to address 0x%lx",
104 nr_bytes, copy, (unsigned long) addr);
107 sim_engine_abort (sd, cpu, cia, "sim_core_signal - internal error - bad switch");
115 STATIC_INLINE_SIM_CORE\
117 sim_core_map_to_str (sim_core_maps map)
121 case sim_core_read_map: return "read";
122 case sim_core_write_map: return "write";
123 case sim_core_execute_map: return "exec";
124 default: return "(invalid-map)";
129 STATIC_INLINE_SIM_CORE\
131 new_sim_core_mapping(SIM_DESC sd,
140 sim_core_mapping *new_mapping = ZALLOC(sim_core_mapping);
142 new_mapping->level = attach;
143 new_mapping->space = space;
144 new_mapping->base = addr;
145 new_mapping->nr_bytes = nr_bytes;
146 new_mapping->bound = addr + (nr_bytes - 1);
147 if (attach == attach_raw_memory) {
148 new_mapping->buffer = buffer;
149 new_mapping->free_buffer = free_buffer;
151 else if (attach >= attach_callback) {
152 new_mapping->device = device;
155 sim_io_error (sd, "new_sim_core_mapping - internal error - unknown attach type %d\n",
162 STATIC_INLINE_SIM_CORE\
164 sim_core_map_attach(SIM_DESC sd,
165 sim_core_map *access_map,
169 unsigned nr_bytes, /* host limited */
170 device *client, /*callback/default*/
171 void *buffer, /*raw_memory*/
172 int free_buffer) /*raw_memory*/
174 /* find the insertion point for this additional mapping and then
176 sim_core_mapping *next_mapping;
177 sim_core_mapping **last_mapping;
179 SIM_ASSERT((attach >= attach_callback && client != NULL && buffer == NULL && !free_buffer)
180 || (attach == attach_raw_memory && client == NULL && buffer != NULL));
182 /* actually do occasionally get a zero size map */
185 device_error(client, "called on sim_core_map_attach with size zero");
187 sim_io_error (sd, "called on sim_core_map_attach with size zero");
191 /* find the insertion point (between last/next) */
192 next_mapping = access_map->first;
193 last_mapping = &access_map->first;
194 while(next_mapping != NULL
195 && (next_mapping->level < attach
196 || (next_mapping->level == attach
197 && next_mapping->bound < addr))) {
198 /* provided levels are the same */
199 /* assert: next_mapping->base > all bases before next_mapping */
200 /* assert: next_mapping->bound >= all bounds before next_mapping */
201 last_mapping = &next_mapping->next;
202 next_mapping = next_mapping->next;
205 /* check insertion point correct */
206 SIM_ASSERT(next_mapping == NULL || next_mapping->level >= attach);
207 if (next_mapping != NULL && next_mapping->level == attach
208 && next_mapping->base < (addr + (nr_bytes - 1))) {
210 device_error(client, "map overlap when attaching %d:0x%lx (%ld)",
211 space, (long)addr, (long)nr_bytes);
213 sim_io_error (sd, "map overlap when attaching %d:0x%lx (%ld)",
214 space, (long)addr, (long)nr_bytes);
218 /* create/insert the new mapping */
219 *last_mapping = new_sim_core_mapping(sd,
221 space, addr, nr_bytes,
222 client, buffer, free_buffer);
223 (*last_mapping)->next = next_mapping;
229 sim_core_attach(SIM_DESC sd,
235 unsigned nr_bytes, /* host limited */
237 void *optional_buffer)
239 sim_core *memory = STATE_CORE(sd);
245 /* check for for attempt to use unimplemented per-processor core map */
247 sim_io_error (sd, "sim_core_map_attach - processor specific memory map not yet supported");
249 if ((access & access_read_write_exec) == 0
250 || (access & ~access_read_write_exec) != 0) {
252 device_error(client, "invalid access for core attach");
254 sim_io_error (sd, "invalid access for core attach");
257 /* verify the attach type */
258 if (attach == attach_raw_memory) {
259 if (optional_buffer == NULL) {
260 buffer = zalloc(nr_bytes);
264 buffer = optional_buffer;
268 else if (attach >= attach_callback) {
274 device_error(client, "sim_core_attach - conflicting buffer and attach arguments");
276 sim_io_error (sd, "sim_core_attach - conflicting buffer and attach arguments");
281 /* attach the region to all applicable access maps */
283 map < nr_sim_core_maps;
286 case sim_core_read_map:
287 if (access & access_read)
288 sim_core_map_attach(sd, &memory->map[map],
290 space, addr, nr_bytes,
291 client, buffer, !buffer_freed);
294 case sim_core_write_map:
295 if (access & access_write)
296 sim_core_map_attach(sd, &memory->map[map],
298 space, addr, nr_bytes,
299 client, buffer, !buffer_freed);
302 case sim_core_execute_map:
303 if (access & access_exec)
304 sim_core_map_attach(sd, &memory->map[map],
306 space, addr, nr_bytes,
307 client, buffer, !buffer_freed);
310 case nr_sim_core_maps:
311 sim_io_error (sd, "sim_core_attach - internal error - bad switch");
316 /* Just copy this map to each of the processor specific data structures.
317 FIXME - later this will be replaced by true processor specific
319 for (i = 0; i < MAX_NR_PROCESSORS; i++)
320 *CPU_CORE (STATE_CPU (sd, i)) = *STATE_CORE (sd);
324 STATIC_INLINE_SIM_CORE\
326 sim_core_find_mapping(sim_core *core,
330 transfer_type transfer,
331 int abort, /*either 0 or 1 - hint to inline/-O */
332 sim_cpu *cpu, /* abort => cpu != NULL */
335 sim_core_mapping *mapping = core->map[map].first;
336 ASSERT ((addr & (nr_bytes - 1)) == 0); /* must be aligned */
337 ASSERT ((addr + (nr_bytes - 1)) >= addr); /* must not wrap */
338 ASSERT (!abort || cpu != NULL); /* abort needs a non null CPU */
339 while (mapping != NULL)
341 if (addr >= mapping->base
342 && (addr + (nr_bytes - 1)) <= mapping->bound)
344 mapping = mapping->next;
348 SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, nr_bytes, addr, transfer,
349 sim_core_unmapped_signal);
355 STATIC_INLINE_SIM_CORE\
357 sim_core_translate(sim_core_mapping *mapping,
360 return (void *)(((char *)mapping->buffer) + addr - mapping->base);
366 sim_core_read_buffer(SIM_DESC sd,
373 while (count < len) {
374 unsigned_word raddr = addr + count;
375 sim_core_mapping *mapping =
376 sim_core_find_mapping(STATE_CORE (sd), map,
377 raddr, /*nr-bytes*/1,
379 0, NULL, NULL_CIA); /*dont-abort*/
383 if (mapping->device != NULL) {
384 int nr_bytes = len - count;
385 if (raddr + nr_bytes - 1> mapping->bound)
386 nr_bytes = mapping->bound - raddr + 1;
387 if (device_io_read_buffer(mapping->device,
388 (unsigned_1*)buffer + count,
391 nr_bytes) != nr_bytes)
398 ((unsigned_1*)buffer)[count] =
399 *(unsigned_1*)sim_core_translate(mapping, raddr);
409 sim_core_write_buffer(SIM_DESC sd,
416 while (count < len) {
417 unsigned_word raddr = addr + count;
418 sim_core_mapping *mapping = sim_core_find_mapping(STATE_CORE (sd), map,
419 raddr, /*nr-bytes*/1,
421 0, NULL, NULL_CIA); /*dont-abort*/
425 if (WITH_CALLBACK_MEMORY
426 && mapping->device != NULL) {
427 int nr_bytes = len - count;
428 if (raddr + nr_bytes - 1 > mapping->bound)
429 nr_bytes = mapping->bound - raddr + 1;
430 if (device_io_write_buffer(mapping->device,
431 (unsigned_1*)buffer + count,
434 nr_bytes) != nr_bytes)
441 *(unsigned_1*)sim_core_translate(mapping, raddr) =
442 ((unsigned_1*)buffer)[count];
450 /* define the read/write 1/2/4/8/word functions */
453 #include "sim-n-core.h"
457 #include "sim-n-core.h"
461 #include "sim-n-core.h"
465 #include "sim-n-core.h"
469 #include "sim-n-core.h"