| 1 | /* Generic simulator halt/restart. |
| 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 | |
| 21 | #include <stdio.h> |
| 22 | #include <signal.h> |
| 23 | |
| 24 | #include "sim-main.h" |
| 25 | #include "sim-assert.h" |
| 26 | |
| 27 | |
| 28 | /* Generic halt */ |
| 29 | |
| 30 | void |
| 31 | sim_engine_halt (SIM_DESC sd, |
| 32 | sim_cpu *last_cpu, |
| 33 | sim_cpu *next_cpu, /* NULL - use default */ |
| 34 | sim_cia cia, |
| 35 | enum sim_stop reason, |
| 36 | int sigrc) |
| 37 | { |
| 38 | sim_engine *engine = STATE_ENGINE (sd); |
| 39 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 40 | if (engine->jmpbuf != NULL) |
| 41 | { |
| 42 | jmp_buf *halt_buf = engine->jmpbuf; |
| 43 | engine->last_cpu = last_cpu; |
| 44 | engine->next_cpu = next_cpu; |
| 45 | engine->reason = reason; |
| 46 | engine->sigrc = sigrc; |
| 47 | SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia); |
| 48 | longjmp(*halt_buf, 1); |
| 49 | } |
| 50 | else |
| 51 | sim_io_error (sd, "sim_halt - bad long jump"); |
| 52 | } |
| 53 | |
| 54 | |
| 55 | /* Generic restart */ |
| 56 | |
| 57 | void |
| 58 | sim_engine_restart (SIM_DESC sd, |
| 59 | sim_cpu *last_cpu, |
| 60 | sim_cpu *next_cpu, |
| 61 | sim_cia cia) |
| 62 | { |
| 63 | sim_engine *engine = STATE_ENGINE (sd); |
| 64 | ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 65 | if (engine->jmpbuf != NULL) |
| 66 | { |
| 67 | jmp_buf *halt_buf = engine->jmpbuf; |
| 68 | engine->last_cpu = last_cpu; |
| 69 | engine->next_cpu = next_cpu; |
| 70 | SIM_ENGINE_RESTART_HOOK (sd, last_cpu, cia); |
| 71 | longjmp(*halt_buf, 2); |
| 72 | } |
| 73 | else |
| 74 | sim_io_error (sd, "sim_restart - bad long jump"); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | /* Generic error code */ |
| 79 | |
| 80 | void |
| 81 | sim_engine_abort (SIM_DESC sd, |
| 82 | sim_cpu *cpu, |
| 83 | sim_cia cia, |
| 84 | const char *fmt, |
| 85 | ...) |
| 86 | { |
| 87 | ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 88 | if (sd == NULL) |
| 89 | { |
| 90 | va_list ap; |
| 91 | va_start(ap, fmt); |
| 92 | vfprintf (stderr, fmt, ap); |
| 93 | va_end(ap); |
| 94 | fprintf (stderr, "\nQuit\n"); |
| 95 | abort (); |
| 96 | } |
| 97 | else if (STATE_ENGINE (sd)->jmpbuf == NULL) |
| 98 | { |
| 99 | va_list ap; |
| 100 | va_start(ap, fmt); |
| 101 | sim_io_evprintf (sd, fmt, ap); |
| 102 | va_end(ap); |
| 103 | sim_io_eprintf (sd, "\n"); |
| 104 | sim_io_error (sd, "Quit Simulator"); |
| 105 | } |
| 106 | else |
| 107 | { |
| 108 | va_list ap; |
| 109 | va_start(ap, fmt); |
| 110 | sim_io_evprintf (sd, fmt, ap); |
| 111 | va_end(ap); |
| 112 | sim_io_eprintf (sd, "\n"); |
| 113 | sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIGABRT); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | |
| 118 | /* Generic next/last cpu */ |
| 119 | |
| 120 | int |
| 121 | sim_engine_last_cpu_nr (SIM_DESC sd) |
| 122 | { |
| 123 | sim_engine *engine = STATE_ENGINE (sd); |
| 124 | if (engine->last_cpu != NULL) |
| 125 | return engine->last_cpu - STATE_CPU (sd, 0); |
| 126 | else |
| 127 | return MAX_NR_PROCESSORS; |
| 128 | } |
| 129 | |
| 130 | int |
| 131 | sim_engine_next_cpu_nr (SIM_DESC sd) |
| 132 | { |
| 133 | sim_engine *engine = STATE_ENGINE (sd); |
| 134 | if (engine->next_cpu != NULL) |
| 135 | return engine->next_cpu - STATE_CPU (sd, 0); |
| 136 | else |
| 137 | return sim_engine_last_cpu_nr (sd) + 1; |
| 138 | } |