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, 50 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/powerpc/bits/setjmp.h b/REORG.TODO/sysdeps/powerpc/bits/setjmp.h
new file mode 100644
index 0000000000..02568951e9
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/bits/setjmp.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 1997-2017 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/>.  */
+
+/* Define the machine-dependent type `jmp_buf'.  PowerPC version.  */
+#ifndef _BITS_SETJMP_H
+#define _BITS_SETJMP_H  1
+
+#if !defined _SETJMP_H && !defined _PTHREAD_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+/* The previous bits/setjmp.h had __jmp_buf defined as a structure.
+   We use an array of 'long int' instead, to make writing the
+   assembler easier. Naturally, user code should not depend on
+   either representation. */
+
+#include <bits/wordsize.h>
+
+/* The current powerpc 32-bit Altivec ABI specifies for SVR4 ABI and EABI
+   the vrsave must be at byte 248 & v20 at byte 256.  So we must pad this
+   correctly on 32 bit.  It also insists that vecregs are only gauranteed
+   4 byte alignment so we need to use vperm in the setjmp/longjmp routines.
+   We have to version the code because members like  int __mask_was_saved
+   in the jmp_buf will move as jmp_buf is now larger than 248 bytes.  We
+   cannot keep the altivec jmp_buf backward compatible with the jmp_buf.  */
+#ifndef	_ASM
+# if __WORDSIZE == 64
+typedef long int __jmp_buf[64] __attribute__ ((__aligned__ (16)));
+# else
+/* The alignment is not essential, i.e.the buffer can be copied to a 4 byte
+   aligned buffer as per the ABI it is just added for performance reasons.  */
+typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16)));
+# endif
+#endif
+
+#endif  /* bits/setjmp.h */