syscall: Only call varargs libc functions from C code.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205321 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 47 insertions, 0 deletions

diff --git a/libgo/runtime/go-varargs.c b/libgo/runtime/go-varargs.c
new file mode 100644
index 00000000000..682c08d64d4
--- /dev/null
+++ b/libgo/runtime/go-varargs.c
@@ -0,0 +1,47 @@
+/* go-varargs.c -- functions for calling C varargs functions.
+
+   Copyright 2013 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <fcntl.h>
+
+/* The syscall package calls C functions.  The Go compiler can not
+   represent a C varargs functions.  On some systems it's important
+   that the declaration of a function match the call.  This function
+   holds non-varargs C functions that the Go code can call.  */
+
+int
+__go_open (char *path, int mode, mode_t perm)
+{
+  return open (path, mode, perm);
+}
+
+int
+__go_fcntl (int fd, int cmd, int arg)
+{
+  return fcntl (fd, cmd, arg);
+}
+
+#ifdef HAVE_OPEN64
+
+int
+__go_open64 (char *path, int mode, mode_t perm)
+{
+  return open64 (path, mode, perm);
+}
+
+#endif
+
+#ifdef HAVE_OPENAT
+
+int
+__go_openat (int fd, char *path, int flags, mode_t mode)
+{
+  return openat (fd, path, flags, mode);
+}
+
+#endif