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
,
200 unsigned nr_bytes
, /* host limited */
202 void *optional_buffer
)
204 sim_core
*memory
= STATE_CORE(sd
);
210 /* check for for attempt to use unimplemented per-processor core map */
212 sim_io_error (sd
, "sim_core_map_attach - processor specific memory map not yet supported");
214 if ((access
& access_read_write_exec
) == 0
215 || (access
& ~access_read_write_exec
) != 0) {
217 device_error(client
, "invalid access for core attach");
219 sim_io_error (sd
, "invalid access for core attach");
222 /* verify the attach type */
223 if (attach
== attach_raw_memory
) {
224 if (optional_buffer
== NULL
) {
225 buffer
= zalloc(nr_bytes
);
229 buffer
= optional_buffer
;
233 else if (attach
>= attach_callback
) {
239 device_error(client
, "sim_core_attach - conflicting buffer and attach arguments");
241 sim_io_error (sd
, "sim_core_attach - conflicting buffer and attach arguments");
246 /* attach the region to all applicable access maps */
248 map
< nr_sim_core_maps
;
251 case sim_core_read_map
:
252 if (access
& access_read
)
253 sim_core_map_attach(sd
, &memory
->map
[map
],
255 space
, addr
, nr_bytes
,
256 client
, buffer
, !buffer_freed
);
259 case sim_core_write_map
:
260 if (access
& access_write
)
261 sim_core_map_attach(sd
, &memory
->map
[map
],
263 space
, addr
, nr_bytes
,
264 client
, buffer
, !buffer_freed
);
267 case sim_core_execute_map
:
268 if (access
& access_exec
)
269 sim_core_map_attach(sd
, &memory
->map
[map
],
271 space
, addr
, nr_bytes
,
272 client
, buffer
, !buffer_freed
);
275 case nr_sim_core_maps
:
276 sim_io_error (sd
, "sim_core_attach - internal error - bad switch");
281 /* Just copy this map to each of the processor specific data structures.
282 FIXME - later this will be replaced by true processor specific
284 for (i
= 0; i
< MAX_NR_PROCESSORS
; i
++)
285 *CPU_CORE (STATE_CPU (sd
, i
)) = *STATE_CORE (sd
);
289 STATIC_INLINE_SIM_CORE\
291 sim_core_find_mapping(sim_core
*core
,
295 int abort
, /*either 0 or 1 - hint to inline/-O */
296 sim_cpu
*cpu
, /* abort => cpu != NULL */
299 sim_core_mapping
*mapping
= core
->map
[map
].first
;
300 ASSERT ((addr
& (nr_bytes
- 1)) == 0); /* must be aligned */
301 ASSERT ((addr
+ (nr_bytes
- 1)) >= addr
); /* must not wrap */
302 ASSERT (!abort
|| cpu
!= NULL
); /* abort needs a non null CPU */
303 while (mapping
!= NULL
)
305 if (addr
>= mapping
->base
306 && (addr
+ (nr_bytes
- 1)) <= mapping
->bound
)
308 mapping
= mapping
->next
;
313 sim_io_error (NULL
, "sim_core_find_map - internal error - can not abort without a processor");
315 sim_io_error (CPU_STATE (cpu
),
316 "access to unmaped address 0x%lx (%d bytes)\n",
317 (unsigned long) addr
, nr_bytes
);
323 STATIC_INLINE_SIM_CORE\
325 sim_core_translate(sim_core_mapping
*mapping
,
328 return (void *)(((char *)mapping
->buffer
) + addr
- mapping
->base
);
334 sim_core_read_buffer(SIM_DESC sd
,
341 while (count
< len
) {
342 unsigned_word raddr
= addr
+ count
;
343 sim_core_mapping
*mapping
=
344 sim_core_find_mapping(STATE_CORE (sd
), map
,
346 0, NULL
, NULL_CIA
); /*dont-abort*/
350 if (mapping
->device
!= NULL
) {
351 int nr_bytes
= len
- count
;
352 if (raddr
+ nr_bytes
- 1> mapping
->bound
)
353 nr_bytes
= mapping
->bound
- raddr
+ 1;
354 if (device_io_read_buffer(mapping
->device
,
355 (unsigned_1
*)buffer
+ count
,
358 nr_bytes
) != nr_bytes
)
365 ((unsigned_1
*)buffer
)[count
] =
366 *(unsigned_1
*)sim_core_translate(mapping
, raddr
);
376 sim_core_write_buffer(SIM_DESC sd
,
383 while (count
< len
) {
384 unsigned_word raddr
= addr
+ count
;
385 sim_core_mapping
*mapping
= sim_core_find_mapping(STATE_CORE (sd
), map
,
387 0, NULL
, NULL_CIA
); /*dont-abort*/
391 if (WITH_CALLBACK_MEMORY
392 && mapping
->device
!= NULL
) {
393 int nr_bytes
= len
- count
;
394 if (raddr
+ nr_bytes
- 1 > mapping
->bound
)
395 nr_bytes
= mapping
->bound
- raddr
+ 1;
396 if (device_io_write_buffer(mapping
->device
,
397 (unsigned_1
*)buffer
+ count
,
400 nr_bytes
) != nr_bytes
)
407 *(unsigned_1
*)sim_core_translate(mapping
, raddr
) =
408 ((unsigned_1
*)buffer
)[count
];
416 /* define the read/write 1/2/4/8/word functions */
419 #include "sim-n-core.h"
423 #include "sim-n-core.h"
427 #include "sim-n-core.h"
431 #include "sim-n-core.h"
435 #include "sim-n-core.h"