Commit | Line | Data |
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f03b093c AC |
1 | /* Generic simulator resume. |
2 | Copyright (C) 1997 Free Software Foundation, Inc. | |
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 | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
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 | ||
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. */ | |
20 | ||
f03b093c AC |
21 | #include <signal.h> |
22 | ||
6e61ecfc GRK |
23 | #include "sim-main.h" |
24 | #include "sim-assert.h" | |
25 | ||
f03b093c AC |
26 | /* Halt the simulator after just one instruction */ |
27 | ||
28 | static void | |
29 | has_stepped (SIM_DESC sd, | |
30 | void *data) | |
31 | { | |
6e61ecfc | 32 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
f03b093c AC |
33 | sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIGTRAP); |
34 | } | |
35 | ||
36 | ||
37 | /* Generic resume - assumes the existance of sim_engine_run */ | |
38 | ||
39 | void | |
40 | sim_resume (SIM_DESC sd, | |
41 | int step, | |
42 | int siggnal) | |
43 | { | |
44 | sim_engine *engine = STATE_ENGINE (sd); | |
45 | jmp_buf buf; | |
6e61ecfc GRK |
46 | int jmpval; |
47 | ||
48 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
f03b093c AC |
49 | |
50 | /* we only want to be single stepping the simulator once */ | |
51 | if (engine->stepper != NULL) | |
52 | { | |
53 | sim_events_deschedule (sd, engine->stepper); | |
54 | engine->stepper = NULL; | |
55 | } | |
56 | if (step) | |
57 | engine->stepper = sim_events_schedule (sd, 1, has_stepped, sd); | |
58 | ||
59 | /* run/resume the simulator */ | |
6e61ecfc GRK |
60 | /* jmpval: 0 (initial use) start simulator |
61 | 1 halt simulator | |
62 | 2 restart simulator | |
63 | */ | |
64 | ||
f03b093c | 65 | engine->jmpbuf = &buf; |
6e61ecfc GRK |
66 | jmpval = setjmp (buf); |
67 | if (jmpval == 0 || jmpval == 2) | |
f03b093c AC |
68 | { |
69 | int last_cpu_nr = sim_engine_last_cpu_nr (sd); | |
70 | int next_cpu_nr = sim_engine_next_cpu_nr (sd); | |
71 | int nr_cpus = MAX_NR_PROCESSORS; /* FIXME */ | |
72 | sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus); | |
73 | if (next_cpu_nr >= nr_cpus) | |
74 | next_cpu_nr = 0; | |
75 | sim_engine_run (sd, next_cpu_nr, siggnal); | |
76 | } | |
77 | engine->jmpbuf = NULL; | |
78 | } |