o Implement generic halt/restart/abort module.

	Use in tic80 and d30v simulators.
o	Add signal hook to sim-core module

1 files changed, 134 insertions, 0 deletions

diff --git a/sim/common/sim-engine.c b/sim/common/sim-engine.c
new file mode 100644
index 0000000..46f69e5
--- /dev/null
+++ b/sim/common/sim-engine.c
@@ -0,0 +1,134 @@
+/* Generic simulator halt/restart.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+This file is part of GDB, the GNU debugger.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "sim-main.h"
+
+#include <stdio.h>
+#include <signal.h>
+
+
+/* Generic halt */
+
+void
+sim_engine_halt (SIM_DESC sd,
+		 sim_cpu *last_cpu,
+		 sim_cpu *next_cpu, /* NULL - use default */
+		 sim_cia cia,
+		 enum sim_stop reason,
+		 int sigrc)
+{
+  sim_engine *engine = STATE_ENGINE (sd);
+  if (engine->jmpbuf != NULL)
+    {
+      jmp_buf *halt_buf = engine->jmpbuf;
+      engine->last_cpu = last_cpu;
+      engine->next_cpu = next_cpu;
+      engine->reason = reason;
+      engine->sigrc = sigrc;
+      SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia);
+      longjmp(*halt_buf, 1);
+    }
+  else
+    sim_io_error (sd, "sim_halt - bad long jump");
+}
+
+
+/* Generic restart */
+
+void
+sim_engine_restart (SIM_DESC sd,
+		    sim_cpu *last_cpu,
+		    sim_cpu *next_cpu,
+		    sim_cia cia)
+{
+  sim_engine *engine = STATE_ENGINE (sd);
+  if (engine->jmpbuf != NULL)
+    {
+      jmp_buf *halt_buf = engine->jmpbuf;
+      engine->last_cpu = last_cpu;
+      engine->next_cpu = next_cpu;
+      SIM_ENGINE_RESTART_HOOK (sd, last_cpu, cia);
+      longjmp(*halt_buf, 0);
+    }
+  else
+    sim_io_error (sd, "sim_restart - bad long jump");
+}
+
+
+/* Generic error code */
+
+void
+sim_engine_abort (SIM_DESC sd,
+		  sim_cpu *cpu,
+		  sim_cia cia,
+		  const char *fmt,
+		  ...)
+{
+  if (sd == NULL)
+    {
+      va_list ap;
+      va_start(ap, fmt);
+      vfprintf (stderr, fmt, ap);
+      va_end(ap);
+      fprintf (stderr, "\nQuit\n");
+      abort ();
+    }
+  else if (STATE_ENGINE (sd)->jmpbuf == NULL)
+    {
+      va_list ap;
+      va_start(ap, fmt);
+      sim_io_evprintf (sd, fmt, ap);
+      va_end(ap);
+      sim_io_eprintf (sd, "\n");
+      sim_io_error (sd, "Quit Simulator");
+    }
+  else
+    {
+      va_list ap;
+      va_start(ap, fmt);
+      sim_io_evprintf (sd, fmt, ap);
+      va_end(ap);
+      sim_io_eprintf (sd, "\n");
+      sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIGABRT);
+    }
+}
+
+
+/* Generic next/last cpu */
+
+int
+sim_engine_last_cpu_nr (SIM_DESC sd)
+{
+  sim_engine *engine = STATE_ENGINE (sd);
+  if (engine->last_cpu != NULL)
+    return engine->last_cpu - STATE_CPU (sd, 0);
+  else
+    return MAX_NR_PROCESSORS;
+}
+
+int
+sim_engine_next_cpu_nr (SIM_DESC sd)
+{
+  sim_engine *engine = STATE_ENGINE (sd);
+  if (engine->next_cpu != NULL)
+    return engine->next_cpu - STATE_CPU (sd, 0);
+  else
+    return sim_engine_last_cpu_nr (sd) + 1;
+}