Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 105 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/libc-start.c b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/libc-start.c
new file mode 100644
index 0000000000..ad036c1e4b
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/libc-start.c
@@ -0,0 +1,105 @@
+/* Copyright (C) 1998-2017 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/>.  */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <sysdep.h>
+
+#ifndef SHARED
+#include <hwcapinfo.h>
+#endif
+
+int __cache_line_size attribute_hidden;
+/* The main work is done in the generic function.  */
+#define LIBC_START_MAIN generic_start_main
+#define LIBC_START_DISABLE_INLINE
+#define LIBC_START_MAIN_AUXVEC_ARG
+#define MAIN_AUXVEC_ARG
+#define INIT_MAIN_ARGS
+#include <csu/libc-start.c>
+
+struct startup_info
+  {
+    void *sda_base;
+    int (*main) (int, char **, char **, void *);
+    int (*init) (int, char **, char **, void *);
+    void (*fini) (void);
+  };
+
+int
+__libc_start_main (int argc, char **argv,
+		   char **ev,
+		   ElfW (auxv_t) * auxvec,
+		   void (*rtld_fini) (void),
+		   struct startup_info *stinfo,
+		   char **stack_on_entry)
+{
+  /* the PPC SVR4 ABI says that the top thing on the stack will
+     be a NULL pointer, so if not we assume that we're being called
+     as a statically-linked program by Linux...  */
+  if (*stack_on_entry != NULL)
+    {
+      char **temp;
+      /* ...in which case, we have argc as the top thing on the
+         stack, followed by argv (NULL-terminated), envp (likewise),
+         and the auxiliary vector.  */
+      /* 32/64-bit agnostic load from stack */
+      argc = *(long int *) stack_on_entry;
+      argv = stack_on_entry + 1;
+      ev = argv + argc + 1;
+#ifdef HAVE_AUX_VECTOR
+      temp = ev;
+      while (*temp != NULL)
+	++temp;
+      auxvec = (ElfW (auxv_t) *)++ temp;
+#endif
+      rtld_fini = NULL;
+    }
+
+  /* Initialize the __cache_line_size variable from the aux vector.  For the
+     static case, we also need _dl_hwcap, _dl_hwcap2 and _dl_platform, so we
+     can call __tcb_parse_hwcap_and_convert_at_platform ().  */
+  for (ElfW (auxv_t) * av = auxvec; av->a_type != AT_NULL; ++av)
+    switch (av->a_type)
+      {
+      case AT_DCACHEBSIZE:
+	__cache_line_size = av->a_un.a_val;
+	break;
+#ifndef SHARED
+      case AT_HWCAP:
+	_dl_hwcap = (unsigned long int) av->a_un.a_val;
+	break;
+      case AT_HWCAP2:
+	_dl_hwcap2 = (unsigned long int) av->a_un.a_val;
+	break;
+      case AT_PLATFORM:
+	_dl_platform = (void *) av->a_un.a_val;
+	break;
+#endif
+      }
+
+  /* Initialize hwcap/hwcap2 and platform data so it can be copied to
+     the TCB later in __libc_setup_tls (). (static case only).  */
+#ifndef SHARED
+  __tcb_parse_hwcap_and_convert_at_platform ();
+#endif
+
+  return generic_start_main (stinfo->main, argc, argv, auxvec,
+			     stinfo->init, stinfo->fini, rtld_fini,
+			     stack_on_entry);
+}