sim: sim-close: unify sim_close logic

Other than the nice advantage of all sims having to declare one fewer
common function, this also fixes leakage in pretty much every sim.
Many were not freeing any resources, and a few were inconsistent as
to the ones they did.  Now we have a single module that takes care of
all the logic for us.

Most of the non-cgen based ones could be deleted outright.  The cgen
ones required adding a callback to the arch-specific cleanup func.
The few that still have close callbacks are to manage their internal
state.

We do not convert erc32, m32c, ppc, rl78, or rx as they do not use
the common sim core.

1 files changed, 57 insertions, 0 deletions

diff --git a/sim/common/sim-close.c b/sim/common/sim-close.c
new file mode 100644
index 0000000..a1458d4
--- /dev/null
+++ b/sim/common/sim-close.c
@@ -0,0 +1,57 @@
+/* Miscellaneous simulator utilities.
+
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
+   Contributed by Analog Devices, Inc. and Stephane Carrez.
+
+   This file is part of simulators.
+
+   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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */
+
+#include "sim-main.h"
+#include "sim-module.h"
+#include "gdb/remote-sim.h"
+
+/* Generic implementation of sim_close that works with simulators that use
+   sim-module for all custom runtime options.  */
+
+#ifndef SIM_CLOSE_HOOK
+# define SIM_CLOSE_HOOK(sd, quitting)
+#endif
+
+void
+sim_close (SIM_DESC sd, int quitting)
+{
+  SIM_CLOSE_HOOK (sd, quitting);
+
+  /* If cgen is active, close it down.  */
+#ifdef CGEN_ARCH
+# define __cgen_cpu_close(arch) arch##_cgen_cpu_close
+# define _cgen_cpu_close(arch) __cgen_cpu_close (arch)
+# define cgen_cpu_close _cgen_cpu_close (CGEN_ARCH)
+  cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0)));
+#endif
+
+  /* Shut down all registered/active modules.  */
+  sim_module_uninstall (sd);
+
+  /* Ensure that any resources allocated through the callback
+     mechanism are released.  */
+  sim_io_shutdown (sd);
+
+  /* Break down all of the cpus.  */
+  sim_cpu_free_all (sd);
+
+  /* Finally break down the sim state itself.  */
+  sim_state_free (sd);
+}