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, 95 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/tile/getcontext.S b/REORG.TODO/sysdeps/unix/sysv/linux/tile/getcontext.S
new file mode 100644
index 0000000000..e7561ea798
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/tile/getcontext.S
@@ -0,0 +1,95 @@
+/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+
+   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 <sysdep.h>
+#include <arch/abi.h>
+
+#include "ucontext_i.h"
+
+/* int getcontext (ucontext_t *ucp) */
+
+	.text
+ENTRY (__getcontext)
+	FEEDBACK_ENTER(__getcontext)
+
+	/* Save the callee-saved GPRs.  There's no need to save the
+	   caller-saved GPRs since the eventual setcontext() or
+	   swapcontext() will assume those registers are all dead.
+	   Save value "1" to uc_flags to later recognize getcontext().  */
+	{ movei r11, 1; ADDI_PTR r10, r0, UC_FLAGS_OFFSET }
+	{ ST_PTR r10, r11; addli r10, r0, UC_REG(30) }
+	{ ST r10, r30; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r31; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r32; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r33; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r34; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r35; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r36; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r37; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r38; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r39; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r40; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r41; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r42; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r43; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r44; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r45; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r46; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r47; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r48; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r49; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r50; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r51; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, r52; ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, tp;  ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, sp;  ADDI_PTR r10, r10, REGSIZE }
+	{ ST r10, lr;  ADDI_PTR r10, r10, REGSIZE }
+	lnk r11   /* Point PC at the "jrp lr" instruction.  */
+	addli r11, r11, .Lreturn - .
+	{ ST r10, r11; ADDI_PTR r10, r10, REGSIZE }
+	mfspr r11, INTERRUPT_CRITICAL_SECTION
+	{
+	 ST r10, r11
+	 movei r1, 0
+	}
+
+	/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG / 8) */
+	{
+	 movei r3, _NSIG / 8
+	 addli r2, r0, UC_SIGMASK_OFFSET
+	}
+	{
+	 movei r0, SIG_BLOCK
+	 moveli TREG_SYSCALL_NR_NAME, __NR_rt_sigprocmask
+	}
+	swint1
+	BNEZ r1, .Lsyscall_error
+
+.Lreturn:
+	{
+	 movei r0, 0
+	 jrp lr
+	}
+
+.Lsyscall_error:
+	j SYSCALL_ERROR_NAME
+
+END (__getcontext)
+.hidden __getcontext
+
+weak_alias (__getcontext, getcontext)