Implement MIPS n64 sendfile64 as alias of sendfile syscall (bug 14822)

[Joseph S. Myers]

Bug 14822 notes that MIPS n64 is missing an actual sendfile64
implementation.  The n64 syscall interface has only a sendfile syscall
(o32 and n32 both have both sendfile and sendfile64 syscalls), and
since this function does not have struct stat involved in its
interface it's correct for sendfile and sendfile64 to be aliases for
n64.  Thus this patch fixes this issue by making n64 handle this
syscall the same as sysdeps/unix/sysv/linux/wordsize-64.

2012-11-22  Joseph Myers  <joseph@codesourcery.com>

	[BZ #14822]
	* sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
	(sendfile): New syscall entry.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/sendfile64.c: New file.
	Copy of ../sysdeps/unix/sysv/linux/wordsize-64/sendfile64.c.

diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/sendfile64.c b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/sendfile64.c
new file mode 100644
index 0000000..4c451bd
--- /dev/null
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/sendfile64.c
@@ -0,0 +1 @@
+/* sendfile64 is alias of sendfile syscall.  */
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
index c94fe75..b23a2a1 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
@@ -8,3 +8,5 @@ fanotify_mark	EXTRA	fanotify_mark	i:iiiis	fanotify_mark
 
 fstatfs		-	fstatfs		i:ip	__fstatfs	fstatfs fstatfs64 __fstatfs64
 statfs		-	statfs		i:sp	__statfs	statfs statfs64 __statfs64
+
+sendfile	-	sendfile	i:iipi	sendfile	sendfile64

-- 
Joseph S. Myers
joseph@codesourcery.com