[PATCH 6/6] bsd-user/freebsd/os-syscall.c: Implement exit

[Warner Losh <imp@bsdimp.com>]

Implement the exit system call. Bring in bsd-proc.h to contain all the
process system call implementation and helper routines.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 bsd-user/bsd-proc.h           | 43 +++++++++++++++++++++++++++++++++++
 bsd-user/freebsd/os-syscall.c |  7 ++++++
 2 files changed, 50 insertions(+)
 create mode 100644 bsd-user/bsd-proc.h

diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h
new file mode 100644
index 00000000000..8f0b6990d14
--- /dev/null
+++ b/bsd-user/bsd-proc.h
@@ -0,0 +1,43 @@
+/*
+ *  process related system call shims and definitions
+ *
+ *  Copyright (c) 2013-2014 Stacey D. Son
+ *
+ *  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 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/>.
+ */
+
+#ifndef BSD_PROC_H_
+#define BSD_PROC_H_
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+/* exit(2) */
+static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1)
+{
+#ifdef TARGET_GPROF
+    _mcleanup();
+#endif
+    gdb_exit(arg1);
+    qemu_plugin_user_exit();
+    /* XXX: should free thread stack and CPU env here  */
+    _exit(arg1);
+
+    return 0;
+}
+
+#endif /* !BSD_PROC_H_ */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 4c7c32daa56..2daba0e623c 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -41,6 +41,7 @@
 #include "user/syscall-trace.h"
 
 #include "bsd-file.h"
+#include "bsd-proc.h"
 
 /* I/O */
 safe_syscall3(ssize_t, read, int, fd, void *, buf, size_t, nbytes);
@@ -226,6 +227,12 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
     abi_long ret;
 
     switch (num) {
+        /*
+         * process system calls
+         */
+    case TARGET_FREEBSD_NR_exit: /* exit(2) */
+        ret = do_bsd_exit(cpu_env, arg1);
+        break;
 
         /*
          * File system calls.
-- 
2.33.1