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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" |
15c16493 | 28 | |
d9b75947 AC |
29 | #ifdef HAVE_STRING_H |
30 | #include <string.h> | |
31 | #else | |
32 | #ifdef HAVE_STRINGS_H | |
33 | #include <strings.h> | |
34 | #endif | |
35 | #endif | |
36 | ||
15c16493 | 37 | |
f03b093c | 38 | #if 0 |
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39 | |
40 | void | |
41 | engine_error (SIM_DESC sd, | |
abe293a0 | 42 | sim_cpu *cpu, |
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43 | instruction_address cia, |
44 | const char *fmt, | |
45 | ...) | |
46 | { | |
47 | va_list ap; | |
48 | va_start (ap, fmt); | |
49 | sim_io_evprintf (sd, fmt, ap); | |
50 | va_end (ap); | |
51 | ||
f03b093c | 52 | sim_halt (sd, cpu, NULL, cia, sim_stopped, SIGABRT); |
15c16493 AC |
53 | } |
54 | ||
55 | void | |
56 | engine_halt (SIM_DESC sd, | |
abe293a0 | 57 | sim_cpu *cpu, |
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58 | instruction_address cia, |
59 | enum sim_stop reason, | |
60 | int siggnal) | |
61 | { | |
62 | if (!sd->halt_ok) | |
63 | sim_io_error (sd, "engine_halt - bad longjmp"); | |
64 | sd->reason = reason; | |
65 | sd->siggnal = siggnal; | |
66 | sd->halt_ok = 0; | |
67 | sd->restart_ok = 0; | |
abe293a0 AC |
68 | if (cpu != NULL) |
69 | cpu->cia = cia; | |
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70 | longjmp (sd->path_to_halt, 1); |
71 | } | |
72 | ||
73 | void | |
74 | engine_restart (SIM_DESC sd, | |
abe293a0 | 75 | sim_cpu *cpu, |
15c16493 AC |
76 | instruction_address cia) |
77 | { | |
78 | if (!sd->restart_ok) | |
79 | sim_io_error (sd, "engine_restart - bad longjmp"); | |
80 | sd->restart_ok = 0; | |
abe293a0 | 81 | cpu->cia = cia; |
15c16493 AC |
82 | longjmp(sd->path_to_restart, 1); |
83 | } | |
84 | ||
85 | ||
86 | void | |
87 | engine_run_until_stop (SIM_DESC sd, | |
88 | volatile int *keep_running) | |
89 | { | |
90 | if (!setjmp (sd->path_to_halt)) | |
91 | { | |
92 | instruction_address cia; | |
abe293a0 | 93 | sim_cpu *cpu = STATE_CPU (sd, 0); |
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94 | sd->halt_ok = 1; |
95 | setjmp (sd->path_to_restart); | |
96 | sd->restart_ok = 1; | |
abe293a0 | 97 | cia = cpu->cia; |
15c16493 AC |
98 | do |
99 | { | |
84902350 AC |
100 | instruction_word insn = IMEM (cia); |
101 | cia = idecode_issue (sd, insn, cia); | |
15c16493 AC |
102 | } |
103 | while (*keep_running); | |
aaa11abe | 104 | engine_halt (sd, cpu, cia, sim_stopped, SIM_SIGINT); |
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105 | } |
106 | } | |
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107 | |
108 | ||
109 | void | |
110 | engine_step (SIM_DESC sd) | |
111 | { | |
112 | if (!setjmp (sd->path_to_halt)) | |
113 | { | |
114 | instruction_address cia; | |
84902350 | 115 | instruction_word insn; |
c445af5a AC |
116 | sim_cpu *cpu = STATE_CPU (sd, 0); |
117 | sd->halt_ok = 1; | |
118 | setjmp (sd->path_to_restart); | |
119 | sd->restart_ok = 1; | |
120 | cia = cpu->cia; | |
84902350 AC |
121 | insn = IMEM (cia); |
122 | cia = idecode_issue (sd, insn, cia); | |
aaa11abe | 123 | engine_halt (sd, cpu, cia, sim_stopped, SIM_SIGTRAP); |
c445af5a AC |
124 | } |
125 | } | |
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126 | |
127 | #endif |