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 */
27 #include "function_unit.h"
42 #include "../../gdb/defs.h"
46 #include "../../gdb/remote-sim.h"
47 #include "../../gdb/callback.h"
50 /* Structures used by the simulator, for gdb just have static structures */
52 static psim *simulator;
53 static char *register_names[] = REGISTER_NAMES;
54 static int print_info = 0;
60 TRACE(trace_gdb, ("sim_open(args=%s) called\n", args ? args : "(null)"));
63 char **argv = buildargv(args);
66 for (argc = 0; argv[argc]; argc++);
69 if (*argv[argp] != '-')
70 error ("Argument is not an option '%s'", argv[argp]);
73 /* check arguments -- note, main.c also contains argument processing
74 code for the standalone emulator. */
75 char *p = argv[argp] + 1;
79 printf_filtered("Usage:\n\ttarget sim [ -t <trace-option> ] [-m model] [-i] [-I]\n");
88 if (argv[argp] == NULL)
89 error("Missing <trace> option for -t\n");
91 trace_option(argv[argp]);
96 function_unit_model(p+1);
99 if (argv[argp] == NULL)
100 error("Missing <trace> option for -t\n");
102 function_unit_model(argv[argp]);
120 TRACE(trace_tbd, ("sim_open() - TBD - should parse the arguments\n"));
121 TRACE(trace_tbd, ("sim_open() - TBD - can not create simulator here as do not have description of it\n"));
126 sim_close (int quitting)
128 TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting));
130 psim_print_info (simulator, print_info);
137 sim_load (char *prog, int from_tty)
140 TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
142 ASSERT(prog != NULL);
144 /* parse the arguments, assume that the file is argument 0 */
145 argv = buildargv(prog);
146 ASSERT(argv != NULL && argv[0] != NULL);
148 /* create the simulator */
149 TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
150 simulator = psim_create(argv[0]);
152 /* bring in all the data section */
153 psim_init(simulator);
155 /* release the arguments */
158 /* `I did it my way' */
166 TRACE(trace_gdb, ("sim_kill(void) called\n"));
167 /* do nothing, nothing to do */
172 sim_read (SIM_ADDR mem, unsigned char *buf, int length)
174 int result = psim_read_memory(simulator, MAX_NR_PROCESSORS,
176 TRACE(trace_gdb, ("sim_read(mem=0x%x, buf=0x%x, length=%d) = %d\n",
177 mem, buf, length, result));
183 sim_write (SIM_ADDR mem, unsigned char *buf, int length)
185 int result = psim_write_memory(simulator, MAX_NR_PROCESSORS,
188 TRACE(trace_gdb, ("sim_write(mem=0x%x, buf=0x%x, length=%d) = %d\n",
189 mem, buf, length, result));
195 sim_fetch_register (int regno, unsigned char *buf)
197 if (simulator == NULL) {
200 TRACE(trace_gdb, ("sim_fetch_register(regno=%d(%s), buf=0x%x)\n",
201 regno, register_names[regno], buf));
202 psim_read_register(simulator, MAX_NR_PROCESSORS,
203 buf, register_names[regno],
209 sim_store_register (int regno, unsigned char *buf)
211 if (simulator == NULL)
213 TRACE(trace_gdb, ("sim_store_register(regno=%d(%s), buf=0x%x)\n",
214 regno, register_names[regno], buf));
215 psim_write_register(simulator, MAX_NR_PROCESSORS,
216 buf, register_names[regno],
222 sim_info (int verbose)
224 TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose));
225 psim_print_info (simulator, verbose);
230 sim_create_inferior (SIM_ADDR start_address, char **argv, char **envp)
232 unsigned_word entry_point = start_address;
234 TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
237 psim_init(simulator);
238 psim_stack(simulator, argv, envp);
240 psim_write_register(simulator, -1 /* all start at same PC */,
241 &entry_point, "pc", cooked_transfer);
245 static volatile int sim_should_run;
248 sim_stop_reason (enum sim_stop *reason, int *sigrc)
250 psim_status status = psim_get_status(simulator);
252 switch (CURRENT_ENVIRONMENT) {
254 case USER_ENVIRONMENT:
255 case VIRTUAL_ENVIRONMENT:
256 switch (status.reason) {
258 *reason = sim_stopped;
260 if (sim_should_run) {
261 error("sim_stop_reason() unknown reason for halt\n");
265 *reason = sim_stopped;
269 *reason = sim_exited;
273 *reason = sim_signalled;
274 *sigrc = status.signal;
279 case OPERATING_ENVIRONMENT:
280 *reason = sim_stopped;
285 error("sim_stop_reason() - unknown environment\n");
289 TRACE(trace_gdb, ("sim_stop_reason(reason=0x%x(%d), sigrc=0x%x(%d))\n",
290 reason, *reason, sigrc, *sigrc));
295 /* Run (or resume) the program. */
303 sim_resume (int step, int siggnal)
307 TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n",
310 prev = signal(SIGINT, sim_ctrl_c);
314 psim_step(simulator);
316 psim_run_until_stop(simulator, &sim_should_run);
318 signal(SIGINT, prev);
322 sim_do_command(char *cmd)
324 TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", cmd));
328 sim_set_callbacks (host_callback *callback)
330 TRACE(trace_gdb, ("sim_set_callbacks called\n"));
338 void *memory = (void*)xmalloc(size);
340 error("xmalloc failed\n");
345 void zfree(void *data)