testsuite: Replace ffitestcxx.h with ffitest.h

ffitest.h contains a superset of the functionality of ffitestcxx.h;
make the C++ tests include ffitest.h instead, and remove ffitestcxx.h.

testsuite/libffi.call/ffitestcxx.h

@@ -1,55 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <ffi.h>
-#include "fficonfig.h"
-
-#define MAX_ARGS 256
-
-
-/* Define __UNUSED__ that also other compilers than gcc can run the tests.  */
-#undef __UNUSED__
-#if defined(__GNUC__)
-#define __UNUSED__ __attribute__((__unused__))
-#else
-#define __UNUSED__
-#endif
-
-#define CHECK(x) (!(x) ? abort() : (void)0)
-
-/* Prefer MAP_ANON(YMOUS) to /dev/zero, since we don't need to keep a
-   file open.  */
-#ifdef HAVE_MMAP_ANON
-# undef HAVE_MMAP_DEV_ZERO
-
-# include <sys/mman.h>
-# ifndef MAP_FAILED
-#  define MAP_FAILED -1
-# endif
-# if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
-#  define MAP_ANONYMOUS MAP_ANON
-# endif
-# define USING_MMAP
-
-#endif
-
-#ifdef HAVE_MMAP_DEV_ZERO
-
-# include <sys/mman.h>
-# ifndef MAP_FAILED
-#  define MAP_FAILED -1
-# endif
-# define USING_MMAP
-
-#endif
-
-
-/* MinGW kludge.  */
-#ifdef _WIN64
-#define PRIdLL "I64d"
-#define PRIuLL "I64u"
-#else
-#define PRIdLL "lld"
-#define PRIuLL "llu"
-#endif
-

testsuite/libffi.call/unwindtest.cc

@@ -6,15 +6,7 @@
 
 /* { dg-do run } */
 
-#include "ffitestcxx.h"
-
-#if defined HAVE_STDINT_H
-#include <stdint.h>
-#endif
-
-#if defined HAVE_INTTYPES_H
-#include <inttypes.h>
-#endif
+#include "ffitest.h"
 
 void
 closure_test_fn(ffi_cif* cif __UNUSED__, void* resp __UNUSED__,

testsuite/libffi.call/unwindtest_ffi_call.cc

@@ -6,7 +6,7 @@
 
 /* { dg-do run } */
 
-#include "ffitestcxx.h"
+#include "ffitest.h"
 
 static int checking(int a __UNUSED__, short b __UNUSED__,
 		    signed char c __UNUSED__)