1 /* Generic simulator halt/restart.
2 Copyright (C) 1997-2014 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "sim-assert.h"
26 REASON/SIGRC are the values returned by sim_stop_reason.
27 ??? Should each cpu have its own copy? */
30 sim_engine_get_run_state (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
32 sim_engine *engine = STATE_ENGINE (sd);
33 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
34 *reason = engine->reason;
35 *sigrc = engine->sigrc;
38 /* Set the run state to REASON/SIGRC.
39 REASON/SIGRC are the values returned by sim_stop_reason.
40 ??? Should each cpu have its own copy? */
43 sim_engine_set_run_state (SIM_DESC sd, enum sim_stop reason, int sigrc)
45 sim_engine *engine = STATE_ENGINE (sd);
46 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
47 engine->reason = reason;
48 engine->sigrc = sigrc;
54 sim_engine_halt (SIM_DESC sd,
56 sim_cpu *next_cpu, /* NULL - use default */
61 sim_engine *engine = STATE_ENGINE (sd);
62 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
63 if (engine->jmpbuf != NULL)
65 jmp_buf *halt_buf = engine->jmpbuf;
66 engine->last_cpu = last_cpu;
67 engine->next_cpu = next_cpu;
68 engine->reason = reason;
69 engine->sigrc = sigrc;
71 SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia);
73 #ifdef SIM_CPU_EXCEPTION_SUSPEND
74 if (last_cpu != NULL && reason != sim_exited)
75 SIM_CPU_EXCEPTION_SUSPEND (sd, last_cpu, sim_signal_to_host (sd, sigrc));
78 longjmp (*halt_buf, sim_engine_halt_jmpval);
82 sim_io_error (sd, "sim_halt - bad long jump");
91 sim_engine_restart (SIM_DESC sd,
96 sim_engine *engine = STATE_ENGINE (sd);
97 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
98 if (engine->jmpbuf != NULL)
100 jmp_buf *halt_buf = engine->jmpbuf;
101 engine->last_cpu = last_cpu;
102 engine->next_cpu = next_cpu;
103 SIM_ENGINE_RESTART_HOOK (sd, last_cpu, cia);
104 longjmp (*halt_buf, sim_engine_restart_jmpval);
107 sim_io_error (sd, "sim_restart - bad long jump");
111 /* Generic error code */
114 sim_engine_vabort (SIM_DESC sd,
120 ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
123 vfprintf (stderr, fmt, ap);
124 fprintf (stderr, "\nQuit\n");
127 else if (STATE_ENGINE (sd)->jmpbuf == NULL)
129 sim_io_evprintf (sd, fmt, ap);
130 sim_io_eprintf (sd, "\n");
131 sim_io_error (sd, "Quit Simulator");
136 sim_io_evprintf (sd, fmt, ap);
137 sim_io_eprintf (sd, "\n");
138 sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIM_SIGABRT);
143 sim_engine_abort (SIM_DESC sd,
150 ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
152 sim_engine_vabort (sd, cpu, cia, fmt, ap);
157 /* Generic next/last cpu */
160 sim_engine_last_cpu_nr (SIM_DESC sd)
162 sim_engine *engine = STATE_ENGINE (sd);
163 if (engine->last_cpu != NULL)
164 return engine->last_cpu - STATE_CPU (sd, 0);
166 return MAX_NR_PROCESSORS;
170 sim_engine_next_cpu_nr (SIM_DESC sd)
172 sim_engine *engine = STATE_ENGINE (sd);
173 if (engine->next_cpu != NULL)
174 return engine->next_cpu - STATE_CPU (sd, 0);
176 return sim_engine_last_cpu_nr (sd) + 1;
180 sim_engine_nr_cpus (SIM_DESC sd)
182 sim_engine *engine = STATE_ENGINE (sd);
183 return engine->nr_cpus;
192 sim_engine_init (SIM_DESC sd)
194 /* initialize the start/stop/resume engine */
195 sim_engine *engine = STATE_ENGINE (sd);
196 engine->jmpbuf = NULL;
197 engine->last_cpu = NULL;
198 engine->next_cpu = NULL;
199 engine->nr_cpus = MAX_NR_PROCESSORS;
200 engine->reason = sim_running;
202 engine->stepper = NULL; /* sim_events_init will clean it up */
208 sim_engine_install (SIM_DESC sd)
210 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
211 sim_module_add_init_fn (sd, sim_engine_init);