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, 198 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/ia64/setjmp.S b/REORG.TODO/sysdeps/unix/sysv/linux/ia64/setjmp.S
new file mode 100644
index 0000000000..15767e3016
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/ia64/setjmp.S
@@ -0,0 +1,198 @@
+/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
+
+   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/>.
+
+   The layout of the jmp_buf is as follows.  This is subject to change
+   and user-code should never depend on the particular layout of
+   jmp_buf!
+
+
+	offset:	description:
+	-------	------------
+	0x000	stack pointer (r12)	; unchangeable (see _JMPBUF_UNWINDS)
+	0x008	r1 (gp)
+	0x010	caller's unat
+	0x018	fpsr			; disabled per the C standard; BZ 16379
+	0x020	r4
+	0x028	r5
+	0x030	r6
+	0x038	r7
+	0x040	rp (b0)
+	0x048	b1
+	0x050	b2
+	0x058	b3
+	0x060	b4
+	0x068	b5
+	0x070	ar.pfs
+	0x078	ar.lc
+	0x080	pr
+	0x088	ar.bsp			; unchangeable (see __longjmp.S)
+	0x090	ar.unat
+	0x098	&__jmp_buf	; address of the jmpbuf (needed to locate NaT bits in unat)
+	0x0a0	 f2
+	0x0b0	 f3
+	0x0c0	 f4
+	0x0d0	 f5
+	0x0e0	f16
+	0x0f0	f17
+	0x100	f18
+	0x110	f19
+	0x120	f20
+	0x130	f21
+	0x130	f22
+	0x140	f23
+	0x150	f24
+	0x160	f25
+	0x170	f26
+	0x180	f27
+	0x190	f28
+	0x1a0	f29
+	0x1b0	f30
+	0x1c0	f31 */
+
+#include <sysdep.h>
+#include <features.h>
+
+	/* The following two entry points are the traditional entry points: */
+
+LEAF(setjmp)
+	alloc r8=ar.pfs,2,0,0,0
+	mov in1=1
+	br.cond.sptk.many HIDDEN_JUMPTARGET(__sigsetjmp)
+END(setjmp)
+
+LEAF(_setjmp)
+	alloc r8=ar.pfs,2,0,0,0
+	mov in1=0
+	br.cond.sptk.many HIDDEN_JUMPTARGET(__sigsetjmp)
+END(_setjmp)
+libc_hidden_def (_setjmp)
+
+	/* __sigsetjmp(__jmp_buf buf, int savemask) */
+
+ENTRY(__sigsetjmp)
+	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
+	alloc loc1=ar.pfs,2,5,2,0
+	.save ar.unat, loc2
+	mov loc2=ar.unat
+	;;
+//	mov r17=ar.fpsr
+	mov r2=in0
+	add r3=8,in0
+	;;
+.mem.offset 8,0;	st8.spill.nta [r2]=sp,16	// r12 (sp)
+.mem.offset 0,0;	st8.spill.nta [r3]=gp,32	// r1 (gp)
+	;;
+	st8.nta [r2]=loc2,16		// save caller's unat
+//	st8.nta [r3]=r17,16		// save fpsr
+	add r8=0xa0,in0
+	;;
+.mem.offset 8,0;	st8.spill.nta [r2]=r4,16	// r4
+.mem.offset 0,0;	st8.spill.nta [r3]=r5,16	// r5
+	add r9=0xb0,in0
+	;;
+	stf.spill.nta [r8]=f2,32
+	stf.spill.nta [r9]=f3,32
+	mov loc0=rp
+	.body
+	;;
+	stf.spill.nta [r8]=f4,32
+	stf.spill.nta [r9]=f5,32
+	mov r17=b1
+	;;
+	stf.spill.nta [r8]=f16,32
+	stf.spill.nta [r9]=f17,32
+	mov r18=b2
+	;;
+	stf.spill.nta [r8]=f18,32
+	stf.spill.nta [r9]=f19,32
+	mov r19=b3
+	;;
+	stf.spill.nta [r8]=f20,32
+	stf.spill.nta [r9]=f21,32
+	mov r20=b4
+	;;
+	stf.spill.nta [r8]=f22,32
+	stf.spill.nta [r9]=f23,32
+	mov r21=b5
+	;;
+	stf.spill.nta [r8]=f24,32
+	stf.spill.nta [r9]=f25,32
+	mov r22=ar.lc
+	;;
+	stf.spill.nta [r8]=f26,32
+	stf.spill.nta [r9]=f27,32
+	mov r24=pr
+	;;
+	stf.spill.nta [r8]=f28,32
+	stf.spill.nta [r9]=f29,32
+#ifdef PTR_MANGLE
+	mov loc3=loc0
+	;;
+	PTR_MANGLE (loc3, loc4)
+#else
+	;;
+#endif
+	stf.spill.nta [r8]=f30
+	stf.spill.nta [r9]=f31
+
+.mem.offset 8,0;	st8.spill.nta [r2]=r6,16	// r6
+.mem.offset 0,0;	st8.spill.nta [r3]=r7,16	// r7
+	;;
+	mov r23=ar.bsp
+	mov r25=ar.unat
+	mov out0=in0
+
+#ifdef PTR_MANGLE
+	st8.nta [r2]=loc3,16		// b0
+#else
+	st8.nta [r2]=loc0,16		// b0
+#endif
+	st8.nta [r3]=r17,16		// b1
+	mov out1=in1
+	;;
+	st8.nta [r2]=r18,16		// b2
+	st8.nta [r3]=r19,16		// b3
+	;;
+	st8.nta [r2]=r20,16		// b4
+	st8.nta [r3]=r21,16		// b5
+	;;
+	st8.nta [r2]=loc1,16		// ar.pfs
+	st8.nta [r3]=r22,16		// ar.lc
+	;;
+	st8.nta [r2]=r24,16		// pr
+	st8.nta [r3]=r23,16		// ar.bsp
+	;;
+	st8.nta [r2]=r25		// ar.unat
+	st8.nta [r3]=in0		// &__jmp_buf
+#if IS_IN (rtld)
+	/* In ld.so we never save the signal mask.  */
+	;;
+#else
+	br.call.dpnt.few rp=__sigjmp_save
+#endif
+.ret0:					// force a new bundle ::q
+	mov.m ar.unat=loc2		// restore caller's unat
+	mov rp=loc0
+	mov ar.pfs=loc1
+	mov r8=0
+	ret
+END(__sigsetjmp)
+libc_hidden_def (__sigsetjmp)
+rtld_hidden_def (__sigsetjmp)
+
+weak_extern(_setjmp)
+weak_extern(setjmp)