[PATCH 031/114] Add syscalls related to scheduler for Phoenix.

[Jakub Sejdak <jakub dot sejdak at phoesys dot com>]

From: Kuba Sejdak <jakub.sejdak@phoesys.com>

---
 newlib/libc/sys/phoenix/sched.c | 101 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 newlib/libc/sys/phoenix/sched.c

diff --git a/newlib/libc/sys/phoenix/sched.c b/newlib/libc/sys/phoenix/sched.c
new file mode 100644
index 0000000..abaac22
--- /dev/null
+++ b/newlib/libc/sys/phoenix/sched.c
@@ -0,0 +1,101 @@
+/* Copyright (C) 2012-2016 Phoenix Systems (http://www.phoesys.com/).
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "syscall.h"
+
+#include <errno.h>
+
+#include <sys/sched.h>
+#include <sys/types.h>
+
+int sched_getparam(pid_t pid, struct sched_param *param)
+{
+	int ret = syscall2(int, SYS_SCHED_GETPARAM, pid, param);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int sched_setparam(pid_t pid, const struct sched_param *param)
+{
+	int ret = syscall2(int, SYS_SCHED_SETPARAM, pid, param);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int sched_getscheduler(pid_t pid)
+{
+	int ret = syscall1(int, SYS_SCHED_GETSCHEDULER, pid);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)
+{
+	int ret = syscall3(int, SYS_SCHED_SETSCHEDULER, pid, policy, param);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int sched_get_priority_max(int policy)
+{
+	int ret = syscall1(int, SYS_SCHED_GET_PRIORITY_MAX, policy);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+	
+	return ret;
+}
+
+int sched_get_priority_min(int policy)
+{
+	int ret = syscall1(int, SYS_SCHED_GET_PRIORITY_MIN, policy);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int sched_yield(void)
+{
+	int ret = syscall0(int, SYS_SCHED_YIELD);
+	if(ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
-- 
2.5.0