Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Generic simulator halt/restart. |
42a4f53d | 2 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
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 | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
c906108c SS |
11 | |
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. | |
16 | ||
4744ac1b JB |
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/>. */ | |
c906108c SS |
19 | |
20 | #include <stdio.h> | |
21 | ||
22 | #include "sim-main.h" | |
23 | #include "sim-assert.h" | |
24 | ||
25 | /* Get the run state. | |
26 | REASON/SIGRC are the values returned by sim_stop_reason. | |
27 | ??? Should each cpu have its own copy? */ | |
28 | ||
29 | void | |
30 | sim_engine_get_run_state (SIM_DESC sd, enum sim_stop *reason, int *sigrc) | |
31 | { | |
32 | sim_engine *engine = STATE_ENGINE (sd); | |
33 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
34 | *reason = engine->reason; | |
35 | *sigrc = engine->sigrc; | |
36 | } | |
37 | ||
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? */ | |
41 | ||
42 | void | |
43 | sim_engine_set_run_state (SIM_DESC sd, enum sim_stop reason, int sigrc) | |
44 | { | |
45 | sim_engine *engine = STATE_ENGINE (sd); | |
46 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
47 | engine->reason = reason; | |
48 | engine->sigrc = sigrc; | |
49 | } | |
50 | ||
51 | /* Generic halt */ | |
52 | ||
53 | void | |
54 | sim_engine_halt (SIM_DESC sd, | |
55 | sim_cpu *last_cpu, | |
56 | sim_cpu *next_cpu, /* NULL - use default */ | |
57 | sim_cia cia, | |
58 | enum sim_stop reason, | |
59 | int sigrc) | |
60 | { | |
61 | sim_engine *engine = STATE_ENGINE (sd); | |
62 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
63 | if (engine->jmpbuf != NULL) | |
64 | { | |
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; | |
70 | ||
71 | SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia); | |
72 | ||
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)); | |
76 | #endif | |
77 | ||
78 | longjmp (*halt_buf, sim_engine_halt_jmpval); | |
79 | } | |
80 | else | |
876fec02 AC |
81 | { |
82 | sim_io_error (sd, "sim_halt - bad long jump"); | |
83 | abort (); | |
84 | } | |
c906108c SS |
85 | } |
86 | ||
87 | ||
88 | /* Generic restart */ | |
89 | ||
90 | void | |
91 | sim_engine_restart (SIM_DESC sd, | |
92 | sim_cpu *last_cpu, | |
93 | sim_cpu *next_cpu, | |
94 | sim_cia cia) | |
95 | { | |
96 | sim_engine *engine = STATE_ENGINE (sd); | |
97 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
98 | if (engine->jmpbuf != NULL) | |
99 | { | |
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); | |
105 | } | |
106 | else | |
107 | sim_io_error (sd, "sim_restart - bad long jump"); | |
108 | } | |
109 | ||
110 | ||
111 | /* Generic error code */ | |
112 | ||
113 | void | |
114 | sim_engine_vabort (SIM_DESC sd, | |
115 | sim_cpu *cpu, | |
116 | sim_cia cia, | |
117 | const char *fmt, | |
118 | va_list ap) | |
119 | { | |
120 | ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
121 | if (sd == NULL) | |
122 | { | |
123 | vfprintf (stderr, fmt, ap); | |
124 | fprintf (stderr, "\nQuit\n"); | |
125 | abort (); | |
126 | } | |
127 | else if (STATE_ENGINE (sd)->jmpbuf == NULL) | |
128 | { | |
129 | sim_io_evprintf (sd, fmt, ap); | |
130 | sim_io_eprintf (sd, "\n"); | |
131 | sim_io_error (sd, "Quit Simulator"); | |
876fec02 | 132 | abort (); |
c906108c SS |
133 | } |
134 | else | |
135 | { | |
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); | |
139 | } | |
140 | } | |
141 | ||
142 | void | |
143 | sim_engine_abort (SIM_DESC sd, | |
144 | sim_cpu *cpu, | |
145 | sim_cia cia, | |
146 | const char *fmt, | |
147 | ...) | |
148 | { | |
149 | va_list ap; | |
150 | ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
34b47c38 | 151 | va_start (ap, fmt); |
c906108c SS |
152 | sim_engine_vabort (sd, cpu, cia, fmt, ap); |
153 | va_end (ap); | |
154 | } | |
155 | ||
156 | ||
157 | /* Generic next/last cpu */ | |
158 | ||
159 | int | |
160 | sim_engine_last_cpu_nr (SIM_DESC sd) | |
161 | { | |
162 | sim_engine *engine = STATE_ENGINE (sd); | |
163 | if (engine->last_cpu != NULL) | |
164 | return engine->last_cpu - STATE_CPU (sd, 0); | |
165 | else | |
166 | return MAX_NR_PROCESSORS; | |
167 | } | |
168 | ||
169 | int | |
170 | sim_engine_next_cpu_nr (SIM_DESC sd) | |
171 | { | |
172 | sim_engine *engine = STATE_ENGINE (sd); | |
173 | if (engine->next_cpu != NULL) | |
174 | return engine->next_cpu - STATE_CPU (sd, 0); | |
175 | else | |
176 | return sim_engine_last_cpu_nr (sd) + 1; | |
177 | } | |
178 | ||
179 | int | |
180 | sim_engine_nr_cpus (SIM_DESC sd) | |
181 | { | |
182 | sim_engine *engine = STATE_ENGINE (sd); | |
183 | return engine->nr_cpus; | |
184 | } | |
185 | ||
186 | ||
187 | ||
188 | ||
189 | /* Initialization */ | |
190 | ||
191 | static SIM_RC | |
192 | sim_engine_init (SIM_DESC sd) | |
193 | { | |
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; | |
201 | engine->sigrc = 0; | |
202 | engine->stepper = NULL; /* sim_events_init will clean it up */ | |
203 | return SIM_RC_OK; | |
204 | } | |
205 | ||
206 | ||
207 | SIM_RC | |
208 | sim_engine_install (SIM_DESC sd) | |
209 | { | |
210 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
211 | sim_module_add_init_fn (sd, sim_engine_init); | |
212 | return SIM_RC_OK; | |
213 | } |