[committed] aarch64: support binary mode for opening files

[Richard Earnshaw <rearnsha@arm.com>]

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Newlib for aarch64 uses libgloss for the backend.  One common libgloss
implementation is the 'rdimon' implementation, which uses the Arm
Semihosting protocol.  In order to support a remote host that runs on
Windows we need to know whether a file is to be opened in binary or
text mode.  That means that we need to preserve this information via
O_BINARY until we know what the libgloss binding will be.

This patch simply copies the arm implementation from sys/arm/sys and
puts it in machine/aarch64/sys, because we don't have a 'sys' subtree
on aarch64.
---
 newlib/libc/machine/aarch64/sys/fcntl.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 newlib/libc/machine/aarch64/sys/fcntl.h


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diff --git a/newlib/libc/machine/aarch64/sys/fcntl.h b/newlib/libc/machine/aarch64/sys/fcntl.h
new file mode 100644
index 000000000..7da1d46da
--- /dev/null
+++ b/newlib/libc/machine/aarch64/sys/fcntl.h
@@ -0,0 +1,12 @@
+#ifndef _SYS_FCNTL_H_
+#define _SYS_FCNTL_H_
+
+#include <sys/_default_fcntl.h>
+
+/* We want to support O_BINARY for the open syscall.
+   For example, the Demon debug monitor has a separate
+   flag value for "rb" vs "r". */
+#define _FBINARY        0x10000
+#define O_BINARY        _FBINARY
+
+#endif /* _SYS_FCNTL_H_ */