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[PATCH 020/114] Add basic io syscalls for Phoenix.


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

---
 newlib/libc/sys/phoenix/io.c | 94 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 newlib/libc/sys/phoenix/io.c

diff --git a/newlib/libc/sys/phoenix/io.c b/newlib/libc/sys/phoenix/io.c
new file mode 100644
index 0000000..86dc751
--- /dev/null
+++ b/newlib/libc/sys/phoenix/io.c
@@ -0,0 +1,94 @@
+/* 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 <fcntl.h>
+#include <stdarg.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+int open(const char *pathname, int flags, ...)
+{
+	int mode = S_IFREG | S_IRWXUGO;
+
+	if (flags & O_CREAT) {
+		va_list arg;
+		va_start(arg, flags);
+		mode = va_arg(arg, int);
+		va_end(arg);
+	}
+
+	int ret = syscall3(int, SYS_OPEN, pathname, flags, mode);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+ssize_t read(int fd, void *buf, size_t count)
+{
+	int ret = syscall3(int, SYS_READ, fd, buf, count);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+ssize_t write(int fd, const void *buf, size_t count)
+{
+	int ret = syscall3(int, SYS_WRITE, fd, buf, count);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+off_t lseek(int fd, off_t offset, int whence)
+{
+	int ret = syscall3(int, SYS_LSEEK, fd, offset, whence);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int close(int fd)
+{
+	int ret = syscall1(int, SYS_CLOSE, fd);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return ret;
+}
+
+int _close(int fd)
+{
+	return close(fd);
+}
-- 
2.5.0


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