1 /* This file is part of the program psim.
3 Copyright (C) 1994-1995, 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 */
31 #include "../../gdb/defs.h"
35 #include "../../gdb/remote-sim.h"
36 #include "../../gdb/callback.h"
39 /* Structures used by the simulator, for gdb just have static structures */
41 static psim
*simulator
;
42 static char *register_names
[] = REGISTER_NAMES
;
43 static int print_info
= 0;
51 TRACE(trace_gdb
, ("sim_open(args=%s) called\n", args
? args
: "(null)"));
54 char **argv
= buildargv(args
);
57 for (argc
= 0; argv
[argc
]; argc
++);
60 if (*argv
[argp
] != '-')
61 error ("Argument is not an option '%s'", argv
[argp
]);
64 /* check arguments -- note, main.c also contains argument processing
65 code for the standalone emulator. */
66 char *p
= argv
[argp
] + 1;
70 printf_filtered("Usage:\n\ttarget sim [ -t <trace-option> ]\n");
76 if (argv
[argp
] == NULL
)
77 error("Missing <trace> option for -t\n");
78 trace_option(argv
[argp
]); /* better fail if NULL */
91 TRACE(trace_tbd
, ("sim_open() - TBD - should parse the arguments\n"));
92 TRACE(trace_tbd
, ("sim_open() - TBD - can not create simulator here as do not have description of it\n"));
97 sim_close (int quitting
)
99 TRACE(trace_gdb
, ("sim_close(quitting=%d) called\n", quitting
));
101 psim_print_info (simulator
, 1);
108 sim_load (char *prog
, int from_tty
)
111 TRACE(trace_gdb
, ("sim_load(prog=%s, from_tty=%d) called\n",
113 ASSERT(prog
!= NULL
);
115 /* parse the arguments, assume that the file is argument 0 */
116 argv
= buildargv(prog
);
117 ASSERT(argv
!= NULL
&& argv
[0] != NULL
);
119 /* create the simulator */
120 TRACE(trace_gdb
, ("sim_load() - first time, create the simulator\n"));
121 simulator
= psim_create(argv
[0]);
123 /* bring in all the data section */
124 psim_init(simulator
);
126 /* release the arguments */
129 /* `I did it my way' */
137 TRACE(trace_gdb
, ("sim_kill(void) called\n"));
138 /* do nothing, nothing to do */
143 sim_read (SIM_ADDR mem
, unsigned char *buf
, int length
)
145 int result
= psim_read_memory(simulator
, MAX_NR_PROCESSORS
,
147 TRACE(trace_gdb
, ("sim_read(mem=0x%x, buf=0x%x, length=%d) = %d\n",
148 mem
, buf
, length
, result
));
154 sim_write (SIM_ADDR mem
, unsigned char *buf
, int length
)
156 int result
= psim_write_memory(simulator
, MAX_NR_PROCESSORS
,
159 TRACE(trace_gdb
, ("sim_write(mem=0x%x, buf=0x%x, length=%d) = %d\n",
160 mem
, buf
, length
, result
));
166 sim_fetch_register (int regno
, unsigned char *buf
)
168 if (simulator
== NULL
) {
171 TRACE(trace_gdb
, ("sim_fetch_register(regno=%d(%s), buf=0x%x)\n",
172 regno
, register_names
[regno
], buf
));
173 psim_read_register(simulator
, MAX_NR_PROCESSORS
,
174 buf
, register_names
[regno
],
180 sim_store_register (int regno
, unsigned char *buf
)
182 if (simulator
== NULL
)
184 TRACE(trace_gdb
, ("sim_store_register(regno=%d(%s), buf=0x%x)\n",
185 regno
, register_names
[regno
], buf
));
186 psim_write_register(simulator
, MAX_NR_PROCESSORS
,
187 buf
, register_names
[regno
],
193 sim_info (int verbose
)
195 TRACE(trace_gdb
, ("sim_info(verbose=%d) called\n", verbose
));
196 psim_print_info (simulator
, verbose
);
201 sim_create_inferior (SIM_ADDR start_address
, char **argv
, char **envp
)
203 unsigned_word entry_point
= start_address
;
205 TRACE(trace_gdb
, ("sim_create_inferior(start_address=0x%x, ...)\n",
208 psim_init(simulator
);
209 psim_stack(simulator
, argv
, envp
);
211 psim_write_register(simulator
, -1 /* all start at same PC */,
212 &entry_point
, "pc", cooked_transfer
);
216 static volatile int sim_should_run
;
219 sim_stop_reason (enum sim_stop
*reason
, int *sigrc
)
221 psim_status status
= psim_get_status(simulator
);
223 switch (CURRENT_ENVIRONMENT
) {
225 case USER_ENVIRONMENT
:
226 case VIRTUAL_ENVIRONMENT
:
227 switch (status
.reason
) {
229 *reason
= sim_stopped
;
231 if (sim_should_run
) {
232 error("sim_stop_reason() unknown reason for halt\n");
236 *reason
= sim_stopped
;
240 *reason
= sim_exited
;
244 *reason
= sim_signalled
;
245 *sigrc
= status
.signal
;
250 case OPERATING_ENVIRONMENT
:
251 *reason
= sim_stopped
;
256 error("sim_stop_reason() - unknown environment\n");
260 TRACE(trace_gdb
, ("sim_stop_reason(reason=0x%x(%d), sigrc=0x%x(%d))\n",
261 reason
, *reason
, sigrc
, *sigrc
));
266 /* Run (or resume) the program. */
274 sim_resume (int step
, int siggnal
)
277 unsigned_word program_counter
;
279 TRACE(trace_gdb
, ("sim_resume(step=%d, siggnal=%d)\n",
282 prev
= signal(SIGINT
, sim_ctrl_c
);
286 psim_step(simulator
);
288 psim_run_until_stop(simulator
, &sim_should_run
);
290 signal(SIGINT
, prev
);
294 sim_do_command(char *cmd
)
296 TRACE(trace_gdb
, ("sim_do_commands(cmd=%s) called\n", cmd
));
300 sim_set_callbacks (host_callback
*callback
)
302 TRACE(trace_gdb
, ("sim_set_callbacks called\n"));
310 void *memory
= (void*)xmalloc(size
);
312 error("xmalloc failed\n");
317 void zfree(void *data
)