Remove the bulk of the NaCl port.

The NaCl port has not been actively maintained since before the 2.25
release.  The complementary GCC back-end was never contributed to GCC,
and we are given to understand that the current NaCl SDK has switched
to Clang and therefore cannot be used to build glibc anymore, so we
doubt that the port remains useful.

This commit simply removes the sysdeps/arm/nacl and sysdeps/nacl
directories and the abi-tags entry.

	Remove the NaCl port.
	* abi-tags: Remove .*-.*-nacl.* entry.
	* sysdeps/arm/nacl: Remove directory and contents.
	* sysdeps/nacl: Likewise.

1 files changed, 0 insertions, 112 deletions

diff --git a/sysdeps/nacl/dl-sysdep.c b/sysdeps/nacl/dl-sysdep.c
deleted file mode 100644
index a2e388bd4e..0000000000
--- a/sysdeps/nacl/dl-sysdep.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/* Operating system support for run-time dynamic linker.  NaCl version.
-   Copyright (C) 2015-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifdef SHARED
-
-# include <assert.h>
-# include <ldsodefs.h>
-# include <stdint.h>
-# include <nacl-interfaces.h>
-
-/* NaCl's elf32.h is incompatible with the real <elf.h>.  */
-# define NATIVE_CLIENT_SRC_INCLUDE_ELF32_H_
-# include <native_client/src/untrusted/nacl/nacl_startup.h>
-
-/* The RTLD_START code sets up the pointer that gets to these
-   macros as COOKIE to point to two words:
-   [0] the argument to the entry point from the system (see nacl_startup.h)
-   [1] the stack base
-*/
-
-# define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp)	\
-  do {								\
-    uint32_t *_info = ((void **) (cookie))[0];			\
-    (argc) = nacl_startup_argc (_info);				\
-    (argv) = nacl_startup_argv (_info);				\
-    (envp) = nacl_startup_envp (_info);				\
-    (auxp) = nacl_startup_auxv (_info);				\
-  } while (0)
-
-# define DL_STACK_END(cookie)	(((void **) (cookie))[1])
-
-/* This is called from the entry point (_start), defined by the RTLD_START
-   macro in the machine-specific dl-machine.h file.  At this point, dynamic
-   linking has been completed and the first argument is the application's
-   entry point.  */
-attribute_hidden internal_function __attribute__ ((noreturn))
-void
-_dl_start_user (void (*user_entry) (uint32_t info[]), uint32_t info[])
-{
-  if (_dl_skip_args > 0)
-    {
-      /* There are some arguments that the user program should not see.
-	 Just slide up the INFO pointer so its NACL_STARTUP_ARGV points
-	 to what should now be argv[0], and copy back the earlier fields.  */
-      assert (nacl_startup_argc (info) >= _dl_skip_args);
-      assert (NACL_STARTUP_ARGV == 3);
-      uint32_t envc = info[NACL_STARTUP_ENVC];
-      uint32_t argc = info[NACL_STARTUP_ARGC];
-      info += _dl_skip_args;
-      info[NACL_STARTUP_ENVC] = envc;
-      info[NACL_STARTUP_ARGC] = argc - _dl_skip_args;
-    }
-
-  /* Pass our finalizer function to the user.  */
-  info[NACL_STARTUP_FINI] = (uintptr_t) &_dl_fini;
-
-  /* Run initializers.  */
-  _dl_init (GL(dl_ns)[0]._ns_loaded,
-	    nacl_startup_argc (info),
-	    nacl_startup_argv (info),
-	    nacl_startup_envp (info));
-
-  /* Call the user's entry point.  This should never return.  */
-  (*user_entry) (info);
-
-  /* Fail clearly just in case it did return.  */
-  __builtin_trap ();
-}
-
-# define DL_SYSDEP_INIT	__nacl_initialize_interfaces ()
-
-#endif  /* SHARED */
-
-#include <elf/dl-sysdep.c>
-
-#include <dl-sysdep-open.h>
-#include <nacl-interfaces.h>
-#include <assert.h>
-#include <string.h>
-#include <unistd.h>
-
-char *
-internal_function
-_dl_sysdep_open_object (const char *name, size_t namelen, int *fd)
-{
-  int error = __nacl_irt_resource_open.open_resource (name, fd);
-  if (error)
-    return NULL;
-  assert (*fd != -1);
-  char *realname = __strdup (name);
-  if (__glibc_unlikely (realname == NULL))
-    {
-      __close (*fd);
-      *fd = -1;
-    }
-  return realname;
-}