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
= &sd
->core
;
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 new_sim_core_mapping(SIM_DESC sd
,
91 sim_core_mapping
*new_mapping
= ZALLOC(sim_core_mapping
);
93 new_mapping
->level
= attach
;
94 new_mapping
->space
= space
;
95 new_mapping
->base
= addr
;
96 new_mapping
->nr_bytes
= nr_bytes
;
97 new_mapping
->bound
= addr
+ (nr_bytes
- 1);
98 if (attach
== attach_raw_memory
) {
99 new_mapping
->buffer
= buffer
;
100 new_mapping
->free_buffer
= free_buffer
;
102 else if (attach
>= attach_callback
) {
103 new_mapping
->device
= device
;
106 sim_io_error (sd
, "new_sim_core_mapping - internal error - unknown attach type %d\n",
113 STATIC_INLINE_SIM_CORE\
115 sim_core_map_attach(SIM_DESC sd
,
116 sim_core_map
*access_map
,
120 unsigned nr_bytes
, /* host limited */
121 device
*client
, /*callback/default*/
122 void *buffer
, /*raw_memory*/
123 int free_buffer
) /*raw_memory*/
125 /* find the insertion point for this additional mapping and then
127 sim_core_mapping
*next_mapping
;
128 sim_core_mapping
**last_mapping
;
130 SIM_ASSERT((attach
>= attach_callback
&& client
!= NULL
&& buffer
== NULL
&& !free_buffer
)
131 || (attach
== attach_raw_memory
&& client
== NULL
&& buffer
!= NULL
));
133 /* actually do occasionally get a zero size map */
136 device_error(client
, "called on sim_core_map_attach with size zero");
138 sim_io_error (sd
, "called on sim_core_map_attach with size zero");
142 /* find the insertion point (between last/next) */
143 next_mapping
= access_map
->first
;
144 last_mapping
= &access_map
->first
;
145 while(next_mapping
!= NULL
146 && (next_mapping
->level
< attach
147 || (next_mapping
->level
== attach
148 && next_mapping
->bound
< addr
))) {
149 /* provided levels are the same */
150 /* assert: next_mapping->base > all bases before next_mapping */
151 /* assert: next_mapping->bound >= all bounds before next_mapping */
152 last_mapping
= &next_mapping
->next
;
153 next_mapping
= next_mapping
->next
;
156 /* check insertion point correct */
157 SIM_ASSERT(next_mapping
== NULL
|| next_mapping
->level
>= attach
);
158 if (next_mapping
!= NULL
&& next_mapping
->level
== attach
159 && next_mapping
->base
< (addr
+ (nr_bytes
- 1))) {
161 device_error(client
, "map overlap when attaching %d:0x%lx (%ld)",
162 space
, (long)addr
, (long)nr_bytes
);
164 sim_io_error (sd
, "map overlap when attaching %d:0x%lx (%ld)",
165 space
, (long)addr
, (long)nr_bytes
);
169 /* create/insert the new mapping */
170 *last_mapping
= new_sim_core_mapping(sd
,
172 space
, addr
, nr_bytes
,
173 client
, buffer
, free_buffer
);
174 (*last_mapping
)->next
= next_mapping
;
180 sim_core_attach(SIM_DESC sd
,
185 unsigned nr_bytes
, /* host limited */
187 void *optional_buffer
)
189 sim_core
*memory
= &sd
->core
;
193 if ((access
& access_read_write_exec
) == 0
194 || (access
& ~access_read_write_exec
) != 0) {
196 device_error(client
, "invalid access for core attach");
198 sim_io_error (sd
, "invalid access for core attach");
201 /* verify the attach type */
202 if (attach
== attach_raw_memory
) {
203 if (optional_buffer
== NULL
) {
204 buffer
= zalloc(nr_bytes
);
208 buffer
= optional_buffer
;
212 else if (attach
>= attach_callback
) {
218 device_error(client
, "sim_core_attach - conflicting buffer and attach arguments");
220 sim_io_error (sd
, "sim_core_attach - conflicting buffer and attach arguments");
225 /* attach the region to all applicable access maps */
227 map
< nr_sim_core_maps
;
230 case sim_core_read_map
:
231 if (access
& access_read
)
232 sim_core_map_attach(sd
, &memory
->map
[map
],
234 space
, addr
, nr_bytes
,
235 client
, buffer
, !buffer_freed
);
238 case sim_core_write_map
:
239 if (access
& access_write
)
240 sim_core_map_attach(sd
, &memory
->map
[map
],
242 space
, addr
, nr_bytes
,
243 client
, buffer
, !buffer_freed
);
246 case sim_core_execute_map
:
247 if (access
& access_exec
)
248 sim_core_map_attach(sd
, &memory
->map
[map
],
250 space
, addr
, nr_bytes
,
251 client
, buffer
, !buffer_freed
);
254 case nr_sim_core_maps
:
255 sim_io_error (sd
, "sim_core_attach - internal error - bad switch");
262 STATIC_INLINE_SIM_CORE\
264 sim_core_find_mapping(SIM_DESC sd
,
268 int abort
) /*either 0 or 1 - helps inline */
270 sim_core_mapping
*mapping
= sd
->core
.map
[map
].first
;
271 SIM_ASSERT((addr
& (nr_bytes
- 1)) == 0); /* must be aligned */
272 SIM_ASSERT((addr
+ (nr_bytes
- 1)) >= addr
); /* must not wrap */
273 while (mapping
!= NULL
) {
274 if (addr
>= mapping
->base
275 && (addr
+ (nr_bytes
- 1)) <= mapping
->bound
)
277 mapping
= mapping
->next
;
280 sim_io_error (sd
, "access to unmaped address 0x%x (%d bytes)\n",
286 STATIC_INLINE_SIM_CORE\
288 sim_core_translate(sim_core_mapping
*mapping
,
291 return (void *)(((char *)mapping
->buffer
) + addr
- mapping
->base
);
297 sim_core_read_buffer(SIM_DESC sd
,
304 while (count
< len
) {
305 unsigned_word raddr
= addr
+ count
;
306 sim_core_mapping
*mapping
=
307 sim_core_find_mapping(sd
, map
,
313 if (mapping
->device
!= NULL
) {
314 int nr_bytes
= len
- count
;
315 if (raddr
+ nr_bytes
- 1> mapping
->bound
)
316 nr_bytes
= mapping
->bound
- raddr
+ 1;
317 if (device_io_read_buffer(mapping
->device
,
318 (unsigned_1
*)buffer
+ count
,
321 nr_bytes
) != nr_bytes
)
328 ((unsigned_1
*)buffer
)[count
] =
329 *(unsigned_1
*)sim_core_translate(mapping
, raddr
);
339 sim_core_write_buffer(SIM_DESC sd
,
346 while (count
< len
) {
347 unsigned_word raddr
= addr
+ count
;
348 sim_core_mapping
*mapping
= sim_core_find_mapping(sd
, map
,
354 if (WITH_CALLBACK_MEMORY
355 && mapping
->device
!= NULL
) {
356 int nr_bytes
= len
- count
;
357 if (raddr
+ nr_bytes
- 1 > mapping
->bound
)
358 nr_bytes
= mapping
->bound
- raddr
+ 1;
359 if (device_io_write_buffer(mapping
->device
,
360 (unsigned_1
*)buffer
+ count
,
363 nr_bytes
) != nr_bytes
)
370 *(unsigned_1
*)sim_core_translate(mapping
, raddr
) =
371 ((unsigned_1
*)buffer
)[count
];
379 /* define the read/write 1/2/4/8/word functions */
382 #include "sim-n-core.h"
386 #include "sim-n-core.h"
390 #include "sim-n-core.h"
394 #include "sim-n-core.h"
398 #include "sim-n-core.h"