syscall: RawSockaddr fix for ppc64, ppc64le

The struct RawSockaddr contains a field Data which
should be uint8 on ppc64 and ppc64le, but is declared
as int8 in gccgo.  This change adds a two new files
which contain the structure declaration for
RawSockaddr, one with the correct types for for ppc64
and ppc64le, and the other for non-ppc64 platforms.

Fixes golang/go#11469

Change-Id: I9964d4b04d63038a407580aa282129458201c2c1
Reviewed-on: https://go-review.googlesource.com/11946
Reviewed-by: Ian Lance Taylor <iant@golang.org>

libgo/Makefile.am

@@ -1676,7 +1676,17 @@ endif # !LIBGO_IS_LINUX
 # Define socket sizes and types.
 if LIBGO_IS_LINUX
 syscall_socket_file = go/syscall/socket_linux.go epoll.go
+if LIBGO_IS_PPC64LE
+syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
 else
+if LIBGO_IS_PPC64
+syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
+else
+syscall_socket_type_file = go/syscall/socket_linux_type.go
+endif
+endif
+else
+syscall_socket_type_file =
 if LIBGO_IS_SOLARIS
 syscall_socket_file = go/syscall/socket_solaris.go
 else
@@ -1762,6 +1772,7 @@ go_base_syscall_files = \
 	$(syscall_size_file) \
 	$(syscall_socket_file) \
 	$(syscall_socket_os_file) \
+	$(syscall_socket_type_file) \
 	$(syscall_uname_file) \
 	$(syscall_netlink_file) \
 	$(syscall_lsf_file) \

libgo/Makefile.in

@@ -1848,6 +1848,10 @@ go_unicode_utf8_files = \
 
 # Define socket sizes and types.
 @LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go epoll.go
+@LIBGO_IS_LINUX_FALSE@syscall_socket_type_file = 
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_FALSE@@LIBGO_IS_PPC64_FALSE@syscall_socket_type_file = go/syscall/socket_linux_type.go
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_FALSE@@LIBGO_IS_PPC64_TRUE@syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_TRUE@syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
 @LIBGO_IS_SOLARIS_FALSE@syscall_socket_os_file = go/syscall/socket_posix.go
 
 # Define socket functions.
@@ -1898,6 +1902,7 @@ go_base_syscall_files = \
 	$(syscall_size_file) \
 	$(syscall_socket_file) \
 	$(syscall_socket_os_file) \
+	$(syscall_socket_type_file) \
 	$(syscall_uname_file) \
 	$(syscall_netlink_file) \
 	$(syscall_lsf_file) \

libgo/go/syscall/socket_linux.go

@@ -136,11 +136,6 @@ type RawSockaddrNetlink struct {
 	Groups uint32
 }
 
-type RawSockaddr struct {
-	Family uint16
-	Data   [14]int8
-}
-
 // BindToDevice binds the socket associated with fd to device.
 func BindToDevice(fd int, device string) (err error) {
 	return SetsockoptString(fd, SOL_SOCKET, SO_BINDTODEVICE, device)

libgo/go/syscall/socket_linux_ppc64x_type.go

@@ -0,0 +1,14 @@
+// socket_linux_ppc64x_type.go -- Socket handling specific to ppc64 GNU/Linux.
+
+// Copyright 2015 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.
+
+package syscall
+
+// Type needed on ppc64le & ppc64
+
+type RawSockaddr struct {
+	Family uint16
+	Data   [14]uint8
+}

libgo/go/syscall/socket_linux_type.go

@@ -0,0 +1,14 @@
+// socket_linux_type.go -- Socket handling specific to GNU/Linux.
+
+// Copyright 2015 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.
+
+package syscall
+
+// Type needed if not on ppc64le or ppc64
+
+type RawSockaddr struct {
+	Family uint16
+	Data   [14]int8
+}