1 /* Generic simulator halt/restart.
2 Copyright (C) 1997, 1998 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 2, or (at your option)
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 along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 #include "sim-assert.h"
27 REASON/SIGRC are the values returned by sim_stop_reason.
28 ??? Should each cpu have its own copy? */
31 sim_engine_get_run_state (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
33 sim_engine *engine = STATE_ENGINE (sd);
34 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
35 *reason = engine->reason;
36 *sigrc = engine->sigrc;
39 /* Set the run state to REASON/SIGRC.
40 REASON/SIGRC are the values returned by sim_stop_reason.
41 ??? Should each cpu have its own copy? */
44 sim_engine_set_run_state (SIM_DESC sd, enum sim_stop reason, int sigrc)
46 sim_engine *engine = STATE_ENGINE (sd);
47 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
48 engine->reason = reason;
49 engine->sigrc = sigrc;
55 sim_engine_halt (SIM_DESC sd,
57 sim_cpu *next_cpu, /* NULL - use default */
62 sim_engine *engine = STATE_ENGINE (sd);
63 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
64 if (engine->jmpbuf != NULL)
66 jmp_buf *halt_buf = engine->jmpbuf;
67 engine->last_cpu = last_cpu;
68 engine->next_cpu = next_cpu;
69 engine->reason = reason;
70 engine->sigrc = sigrc;
72 SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia);
74 #ifdef SIM_CPU_EXCEPTION_SUSPEND
75 if (last_cpu != NULL && reason != sim_exited)
76 SIM_CPU_EXCEPTION_SUSPEND (sd, last_cpu, sim_signal_to_host (sd, sigrc));
79 longjmp (*halt_buf, sim_engine_halt_jmpval);
82 sim_io_error (sd, "sim_halt - bad long jump");
89 sim_engine_restart (SIM_DESC sd,
94 sim_engine *engine = STATE_ENGINE (sd);
95 ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
96 if (engine->jmpbuf != NULL)
98 jmp_buf *halt_buf = engine->jmpbuf;
99 engine->last_cpu = last_cpu;
100 engine->next_cpu = next_cpu;
101 SIM_ENGINE_RESTART_HOOK (sd, last_cpu, cia);
102 longjmp (*halt_buf, sim_engine_restart_jmpval);
105 sim_io_error (sd, "sim_restart - bad long jump");
109 /* Generic error code */
112 sim_engine_vabort (SIM_DESC sd,
118 ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
121 vfprintf (stderr, fmt, ap);
122 fprintf (stderr, "\nQuit\n");
125 else if (STATE_ENGINE (sd)->jmpbuf == NULL)
127 sim_io_evprintf (sd, fmt, ap);
128 sim_io_eprintf (sd, "\n");
129 sim_io_error (sd, "Quit Simulator");
133 sim_io_evprintf (sd, fmt, ap);
134 sim_io_eprintf (sd, "\n");
135 sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIM_SIGABRT);
140 sim_engine_abort (SIM_DESC sd,
147 ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
149 sim_engine_vabort (sd, cpu, cia, fmt, ap);
154 /* Generic next/last cpu */
157 sim_engine_last_cpu_nr (SIM_DESC sd)
159 sim_engine *engine = STATE_ENGINE (sd);
160 if (engine->last_cpu != NULL)
161 return engine->last_cpu - STATE_CPU (sd, 0);
163 return MAX_NR_PROCESSORS;
167 sim_engine_next_cpu_nr (SIM_DESC sd)
169 sim_engine *engine = STATE_ENGINE (sd);
170 if (engine->next_cpu != NULL)
171 return engine->next_cpu - STATE_CPU (sd, 0);
173 return sim_engine_last_cpu_nr (sd) + 1;
177 sim_engine_nr_cpus (SIM_DESC sd)
179 sim_engine *engine = STATE_ENGINE (sd);
180 return engine->nr_cpus;
189 sim_engine_init (SIM_DESC sd)
191 /* initialize the start/stop/resume engine */
192 sim_engine *engine = STATE_ENGINE (sd);
193 engine->jmpbuf = NULL;
194 engine->last_cpu = NULL;
195 engine->next_cpu = NULL;
196 engine->nr_cpus = MAX_NR_PROCESSORS;
197 engine->reason = sim_running;
199 engine->stepper = NULL; /* sim_events_init will clean it up */
205 sim_engine_install (SIM_DESC sd)
207 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
208 sim_module_add_init_fn (sd, sim_engine_init);