1 /* This file is part of the program psim.
3 Copyright (C) 1994-1996, 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.
22 #include <signal.h> /* FIXME - should be machine dependant version */
29 #undef printf_filtered /* blow away the mapping */
46 #include "remote-sim.h"
49 /* Structures used by the simulator, for gdb just have static structures */
51 static psim
*simulator
;
52 static device
*root_device
;
53 static const char *register_names
[] = REGISTER_NAMES
;
55 /* For communication between sim_load and sim_create_inferior.
56 This can be made to go away, please do. */
57 static unsigned_word entry_point
;
60 sim_open (SIM_OPEN_KIND kind
, host_callback
*callback
, char **argv
)
64 /* Note: The simulation is not created by sim_open() because
65 complete information is not yet available */
67 TRACE(trace_gdb
, ("sim_open called\n"));
69 if (root_device
!= NULL
)
70 sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n");
71 root_device
= psim_tree();
74 psim_options(root_device
, argv
+ 1);
76 if (ppc_trace
[trace_opts
])
79 /* fudge our descriptor for now */
85 sim_close (SIM_DESC sd
, int quitting
)
87 TRACE(trace_gdb
, ("sim_close(quitting=%d) called\n", quitting
));
88 if (ppc_trace
[trace_print_info
] && simulator
!= NULL
)
89 psim_print_info (simulator
, ppc_trace
[trace_print_info
]);
94 sim_load (SIM_DESC sd
, char *prog
, bfd
*abfd
, int from_tty
)
97 TRACE(trace_gdb
, ("sim_load(prog=%s, from_tty=%d) called\n",
101 /* parse the arguments, assume that the file is argument 0 */
102 argv
= buildargv(prog
);
103 ASSERT(argv
!= NULL
&& argv
[0] != NULL
);
105 /* create the simulator */
106 TRACE(trace_gdb
, ("sim_load() - first time, create the simulator\n"));
107 simulator
= psim_create(argv
[0], root_device
);
109 /* bring in all the data section */
110 psim_init(simulator
);
112 /* release the arguments */
115 /* get the start address */
117 entry_point
= bfd_get_start_address (abfd
);
120 abfd
= bfd_openr (argv
[0], 0);
122 error ("psim: can't open \"%s\": %s\n",
123 argv
[0], bfd_errmsg (bfd_get_error ()));
124 if (!bfd_check_format (abfd
, bfd_object
))
126 const char *errmsg
= bfd_errmsg (bfd_get_error ());
128 error ("psim: \"%s\" is not an object file: %s\n",
131 entry_point
= bfd_get_start_address (abfd
);
140 sim_kill (SIM_DESC sd
)
142 TRACE(trace_gdb
, ("sim_kill(void) called\n"));
143 /* do nothing, nothing to do */
148 sim_read (SIM_DESC sd
, SIM_ADDR mem
, unsigned char *buf
, int length
)
150 int result
= psim_read_memory(simulator
, MAX_NR_PROCESSORS
,
152 TRACE(trace_gdb
, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
153 (long)mem
, (long)buf
, length
, result
));
159 sim_write (SIM_DESC sd
, SIM_ADDR mem
, unsigned char *buf
, int length
)
161 int result
= psim_write_memory(simulator
, MAX_NR_PROCESSORS
,
164 TRACE(trace_gdb
, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
165 (long)mem
, (long)buf
, length
, result
));
171 sim_fetch_register (SIM_DESC sd
, int regno
, unsigned char *buf
)
173 if (simulator
== NULL
) {
176 TRACE(trace_gdb
, ("sim_fetch_register(regno=%d(%s), buf=0x%lx)\n",
177 regno
, register_names
[regno
], (long)buf
));
178 psim_read_register(simulator
, MAX_NR_PROCESSORS
,
179 buf
, register_names
[regno
],
185 sim_store_register (SIM_DESC sd
, int regno
, unsigned char *buf
)
187 if (simulator
== NULL
)
189 TRACE(trace_gdb
, ("sim_store_register(regno=%d(%s), buf=0x%lx)\n",
190 regno
, register_names
[regno
], (long)buf
));
191 psim_write_register(simulator
, MAX_NR_PROCESSORS
,
192 buf
, register_names
[regno
],
198 sim_info (SIM_DESC sd
, int verbose
)
200 TRACE(trace_gdb
, ("sim_info(verbose=%d) called\n", verbose
));
201 psim_print_info (simulator
, verbose
);
206 sim_create_inferior (SIM_DESC sd
, char **argv
, char **envp
)
208 TRACE(trace_gdb
, ("sim_create_inferior(start_address=0x%x, ...)\n",
211 psim_init(simulator
);
212 psim_stack(simulator
, argv
, envp
);
214 psim_write_register(simulator
, -1 /* all start at same PC */,
215 &entry_point
, "pc", cooked_transfer
);
221 sim_stop_reason (SIM_DESC sd
, enum sim_stop
*reason
, int *sigrc
)
223 psim_status status
= psim_get_status(simulator
);
225 switch (status
.reason
) {
227 *reason
= sim_stopped
;
228 if (status
.signal
== 0)
231 *sigrc
= status
.signal
;
234 *reason
= sim_stopped
;
238 *reason
= sim_exited
;
239 *sigrc
= status
.signal
;
242 *reason
= sim_signalled
;
243 *sigrc
= status
.signal
;
247 TRACE(trace_gdb
, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n",
248 (long)reason
, (long)*reason
, (long)sigrc
, (long)*sigrc
));
253 /* Run (or resume) the program. */
256 sim_stop (SIM_DESC sd
)
258 psim_stop (simulator
);
263 sim_resume (SIM_DESC sd
, int step
, int siggnal
)
265 TRACE(trace_gdb
, ("sim_resume(step=%d, siggnal=%d)\n",
270 psim_step (simulator
);
274 psim_run (simulator
);
279 sim_do_command (SIM_DESC sd
, char *cmd
)
281 TRACE(trace_gdb
, ("sim_do_commands(cmd=%s) called\n",
282 cmd
? cmd
: "(null)"));
284 char **argv
= buildargv(cmd
);
285 psim_command(root_device
, argv
);
291 /* Map simulator IO operations onto the corresponding GDB I/O
294 NB: Only a limited subset of operations are mapped across. More
295 advanced operations (such as dup or write) must either be mapped to
296 one of the below calls or handled internally */
298 static host_callback
*callbacks
;
301 sim_io_read_stdin(char *buf
,
304 switch (CURRENT_STDIO
) {
306 return callbacks
->read_stdin(callbacks
, buf
, sizeof_buf
);
309 return callbacks
->read(callbacks
, 0, buf
, sizeof_buf
);
312 error("sim_io_read_stdin: unaccounted switch\n");
319 sim_io_write_stdout(const char *buf
,
322 switch (CURRENT_STDIO
) {
324 return callbacks
->write_stdout(callbacks
, buf
, sizeof_buf
);
327 return callbacks
->write(callbacks
, 1, buf
, sizeof_buf
);
330 error("sim_io_write_stdout: unaccounted switch\n");
337 sim_io_write_stderr(const char *buf
,
340 switch (CURRENT_STDIO
) {
342 /* NB: I think there should be an explicit write_stderr callback */
343 return callbacks
->write(callbacks
, 3, buf
, sizeof_buf
);
346 return callbacks
->write(callbacks
, 3, buf
, sizeof_buf
);
349 error("sim_io_write_stderr: unaccounted switch\n");
357 sim_io_printf_filtered(const char *fmt
,
362 /* format the message */
364 vsprintf(message
, fmt
, ap
);
367 if (strlen(message
) >= sizeof(message
))
368 error("sim_io_printf_filtered: buffer overflow\n");
369 callbacks
->printf_filtered(callbacks
, "%s", message
);
373 sim_io_flush_stdoutput(void)
375 switch (CURRENT_STDIO
) {
377 gdb_flush (gdb_stdout
);
382 error("sim_io_read_stdin: unaccounted switch\n");
388 sim_set_callbacks (host_callback
*callback
)
390 callbacks
= callback
;
391 TRACE(trace_gdb
, ("sim_set_callbacks called\n"));
399 void *memory
= (void*)xmalloc(size
);
401 error("xmalloc failed\n");
402 memset(memory
, 0, size
);
406 void zfree(void *data
)