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15c16493 AC |
1 | /* This file is part of the GDB simulators. |
2 | ||
3 | Copyright (C) 1997, Free Software Foundation | |
4 | Condtributed by Cyngnus Solutions. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | */ | |
21 | ||
22 | ||
23 | ||
24 | #include "sim-main.h" | |
25 | ||
26 | #include "idecode.h" | |
7b167b09 | 27 | #include "itable.h" |
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28 | |
29 | #include <signal.h> | |
30 | ||
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31 | #ifdef HAVE_STRING_H |
32 | #include <string.h> | |
33 | #else | |
34 | #ifdef HAVE_STRINGS_H | |
35 | #include <strings.h> | |
36 | #endif | |
37 | #endif | |
38 | ||
15c16493 | 39 | |
f03b093c | 40 | #if 0 |
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41 | |
42 | void | |
43 | engine_error (SIM_DESC sd, | |
abe293a0 | 44 | sim_cpu *cpu, |
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45 | instruction_address cia, |
46 | const char *fmt, | |
47 | ...) | |
48 | { | |
49 | va_list ap; | |
50 | va_start (ap, fmt); | |
51 | sim_io_evprintf (sd, fmt, ap); | |
52 | va_end (ap); | |
53 | ||
f03b093c | 54 | sim_halt (sd, cpu, NULL, cia, sim_stopped, SIGABRT); |
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55 | } |
56 | ||
57 | void | |
58 | engine_halt (SIM_DESC sd, | |
abe293a0 | 59 | sim_cpu *cpu, |
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60 | instruction_address cia, |
61 | enum sim_stop reason, | |
62 | int siggnal) | |
63 | { | |
64 | if (!sd->halt_ok) | |
65 | sim_io_error (sd, "engine_halt - bad longjmp"); | |
66 | sd->reason = reason; | |
67 | sd->siggnal = siggnal; | |
68 | sd->halt_ok = 0; | |
69 | sd->restart_ok = 0; | |
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70 | if (cpu != NULL) |
71 | cpu->cia = cia; | |
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72 | longjmp (sd->path_to_halt, 1); |
73 | } | |
74 | ||
75 | void | |
76 | engine_restart (SIM_DESC sd, | |
abe293a0 | 77 | sim_cpu *cpu, |
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78 | instruction_address cia) |
79 | { | |
80 | if (!sd->restart_ok) | |
81 | sim_io_error (sd, "engine_restart - bad longjmp"); | |
82 | sd->restart_ok = 0; | |
abe293a0 | 83 | cpu->cia = cia; |
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84 | longjmp(sd->path_to_restart, 1); |
85 | } | |
86 | ||
87 | ||
88 | void | |
89 | engine_run_until_stop (SIM_DESC sd, | |
90 | volatile int *keep_running) | |
91 | { | |
92 | if (!setjmp (sd->path_to_halt)) | |
93 | { | |
94 | instruction_address cia; | |
abe293a0 | 95 | sim_cpu *cpu = STATE_CPU (sd, 0); |
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96 | sd->halt_ok = 1; |
97 | setjmp (sd->path_to_restart); | |
98 | sd->restart_ok = 1; | |
abe293a0 | 99 | cia = cpu->cia; |
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100 | do |
101 | { | |
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102 | instruction_word insn = IMEM (cia); |
103 | cia = idecode_issue (sd, insn, cia); | |
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104 | } |
105 | while (*keep_running); | |
abe293a0 | 106 | engine_halt (sd, cpu, cia, sim_stopped, SIGINT); |
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107 | } |
108 | } | |
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109 | |
110 | ||
111 | void | |
112 | engine_step (SIM_DESC sd) | |
113 | { | |
114 | if (!setjmp (sd->path_to_halt)) | |
115 | { | |
116 | instruction_address cia; | |
84902350 | 117 | instruction_word insn; |
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118 | sim_cpu *cpu = STATE_CPU (sd, 0); |
119 | sd->halt_ok = 1; | |
120 | setjmp (sd->path_to_restart); | |
121 | sd->restart_ok = 1; | |
122 | cia = cpu->cia; | |
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123 | insn = IMEM (cia); |
124 | cia = idecode_issue (sd, insn, cia); | |
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125 | engine_halt (sd, cpu, cia, sim_stopped, SIGTRAP); |
126 | } | |
127 | } | |
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128 | |
129 | #endif | |
130 |