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, 61 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/alpha/bits/setjmp.h b/REORG.TODO/sysdeps/alpha/bits/setjmp.h
new file mode 100644
index 0000000000..d7eb751de8
--- /dev/null
+++ b/REORG.TODO/sysdeps/alpha/bits/setjmp.h
@@ -0,0 +1,61 @@
+/* Define the machine-dependent type `jmp_buf'.  Alpha version.
+   Copyright (C) 1992-2017 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/>.  */
+
+#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. */
+
+/*
+ * Integer registers:
+ *    $0 is the return value (va);
+ *    $1-$8, $22-$25, $28 are call-used (t0-t7, t8-t11, at);
+ *    $9-$14 we save here (s0-s5);
+ *    $15 is the FP and we save it here (fp or s6);
+ *    $16-$21 are input arguments (call-used) (a0-a5);
+ *    $26 is the return PC and we save it here (ra);
+ *    $27 is the procedure value (i.e., the address of __setjmp) (pv or t12);
+ *    $29 is the global pointer, which the caller will reconstruct
+ *        from the return address restored in $26 (gp);
+ *    $30 is the stack pointer and we save it here (sp);
+ *    $31 is always zero (zero).
+ *
+ * Floating-point registers:
+ *    $f0 is the floating return value;
+ *    $f1, $f10-$f15, $f22-$f30 are call-used;
+ *    $f2-$f9 we save here;
+ *    $f16-$21 are input args (call-used);
+ *    $f31 is always zero.
+ *
+ * Note that even on Alpha hardware that does not have an FPU (there
+ * isn't such a thing currently) it is required to implement the FP
+ * registers.
+ */
+
+#ifndef __ASSEMBLY__
+typedef long int __jmp_buf[17];
+#endif
+
+#endif  /* bits/setjmp.h */