The attached patch adds Go closure support for s390[x] atop
Richard's go-closure branch in the Gcc repository (it requires on
other patches discussed in the general Go closure topic).

ChangeLog:
--
2014-12-16  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* src/s390/sysv.S (ffi_call_SYSV): Adapt for Go closure support.
	Rewrite cfi information.
	(ffi_closure_SYSV): Adapt for Go closure support.  Rewrite cfi
	information.
	(ffi_go_closure_SYSV): New function.
	* src/s390/ffi.c (ffi_call_int): Renamed from ffi_call, add closure
	argument.
	(ffi_call): New interface function.
	(ffi_call_go): New interface function for go calls.
	(ffi_closure_helper_SYSV): Pass closure internals as arguments.
	(ffi_prep_go_closure): New function for Go closure support.
	* src/s390/ffitarget.h (FFI_GO_CLOSURES): Activate Go closure support.
--

Ciao

Dominik ^_^  ^_^

-- 

Dominik Vogt
IBM Germany