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, 363 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/sparc/sparc64/strncmp.S b/REORG.TODO/sysdeps/sparc/sparc64/strncmp.S
new file mode 100644
index 0000000000..f0af16155b
--- /dev/null
+++ b/REORG.TODO/sysdeps/sparc/sparc64/strncmp.S
@@ -0,0 +1,363 @@
+/* Compare no more than N characters of S1 and S2, returning less than,
+   equal to or greater than zero if S1 is lexicographically less than,
+   equal to or greater than S2.
+   For SPARC v9.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
+                  Jakub Jelinek <jj@ultra.linux.cz>.
+
+   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 <asm/asi.h>
+#ifndef XCC
+#define XCC xcc
+#define USE_BPR
+	.register	%g2, #scratch
+	.register	%g3, #scratch
+	.register	%g6, #scratch
+#endif
+
+	/* Normally, this uses
+	   ((xword - 0x0101010101010101) & 0x8080808080808080) test
+	   to find out if any byte in xword could be zero. This is fast, but
+	   also gives false alarm for any byte in range 0x81-0xff. It does
+	   not matter for correctness, as if this test tells us there could
+	   be some zero byte, we check it byte by byte, but if bytes with
+	   high bits set are common in the strings, then this will give poor
+	   performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
+	   will use one tick slower, but more precise test
+	   ((xword - 0x0101010101010101) & (~xword) & 0x8080808080808080),
+	   which does not give any false alarms (but if some bits are set,
+	   one cannot assume from it which bytes are zero and which are not).
+	   It is yet to be measured, what is the correct default for glibc
+	   in these days for an average user.
+	 */
+
+	.text
+	.align		32
+ENTRY(strncmp)
+#ifdef USE_BPR
+	brz,pn		%o2, 4f				/* CTI+IEU1	Group		*/
+#else
+	tst		%o2				/* IEU1		Group		*/
+	be,pn		%XCC, 4f			/* CTI				*/
+#endif
+	 sethi		%hi(0x1010101), %g1		/* IEU0				*/
+	andcc		%o0, 7, %g0			/* IEU1		Group		*/
+	bne,pn		%icc, 9f			/* CTI				*/
+
+	 or		%g1, %lo(0x1010101), %g1	/* IEU0				*/
+	andcc		%o1, 7, %g3			/* IEU1		Group		*/
+	bne,pn		%icc, 11f			/* CTI				*/
+	 sllx		%g1, 32, %g2			/* IEU0				*/
+
+	ldx		[%o0], %g4			/* Load		Group		*/
+	or		%g1, %g2, %g1			/* IEU0				*/
+1:	ldx		[%o1], %o3			/* Load		Group		*/
+	sllx		%g1, 7, %g2			/* IEU0				*/
+
+	add		%o0, 8, %o0			/* IEU1				*/
+2:	subcc		%o2, 8, %o2			/* IEU1		Group		*/
+	bcs,pn		%XCC, 5f			/* CTI				*/
+	 add		%o1, 8, %o1			/* IEU0				*/
+
+	sub		%g4, %g1, %g3			/* IEU0		Group		*/
+	subcc		%g4, %o3, %o4			/* IEU1				*/
+#ifdef EIGHTBIT_NOT_RARE
+	andn		%g3, %g4, %g6			/* IEU0		Group		*/
+#endif
+	bne,pn		%xcc, 6f			/* CTI				*/
+	 ldxa		[%o0] ASI_PNF, %g4		/* Load		Group		*/
+
+	add		%o0, 8, %o0			/* IEU0				*/
+#ifdef EIGHTBIT_NOT_RARE
+	andcc		%g6, %g2, %g0			/* IEU1				*/
+#else
+	andcc		%g3, %g2, %g0			/* IEU1				*/
+#endif
+	be,a,pt		%xcc, 2b			/* CTI				*/
+	 ldxa		[%o1] ASI_PNF, %o3		/* Load		Group		*/
+
+	addcc		%g3, %g1, %o4			/* IEU1				*/
+#ifdef EIGHTBIT_NOT_RARE
+	srlx		%g6, 32, %g6			/* IEU0				*/
+	andcc		%g6, %g2, %g0			/* IEU1		Group		*/
+#else
+	srlx		%g3, 32, %g3			/* IEU0				*/
+	andcc		%g3, %g2, %g0			/* IEU1		Group		*/
+#endif
+	be,pt		%xcc, 3f			/* CTI				*/
+
+	 srlx		%o4, 56, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4f			/* CTI				*/
+	 srlx		%o4, 48, %o5			/* IEU0				*/
+
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4f			/* CTI				*/
+	 srlx		%o4, 40, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%icc, 4f			/* CTI				*/
+	 srlx		%o4, 32, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4f			/* CTI				*/
+
+3:	 srlx		%o4, 24, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4f			/* CTI				*/
+	 srlx		%o4, 16, %o5			/* IEU0				*/
+
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4f			/* CTI				*/
+	 srlx		%o4, 8, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%icc, 4f			/* CTI				*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	bne,a,pn	%icc, 2b			/* CTI				*/
+	 ldxa		[%o1] ASI_PNF, %o3		/* Load				*/
+
+4:	retl						/* CTI+IEU1	Group		*/
+	 clr		%o0				/* IEU0				*/
+
+	.align		16
+5:	srlx		%g4, 56, %o4			/* IEU0		Group		*/
+	cmp		%o2, -8				/* IEU1				*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%o3, 56, %o5			/* IEU0		Group		*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1				*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 48, %o5			/* IEU0				*/
+	cmp		%o2, -7				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 48, %o4			/* IEU0				*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 40, %o5			/* IEU0				*/
+	cmp		%o2, -6				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 40, %o4			/* IEU0				*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 32, %o5			/* IEU0				*/
+	cmp		%o2, -5				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 32, %o4			/* IEU0				*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 24, %o5			/* IEU0				*/
+	cmp		%o2, -4				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 24, %o4			/* IEU0				*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 16, %o5			/* IEU0				*/
+	cmp		%o2, -3				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 16, %o4			/* IEU0				*/
+
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+
+	 srlx		%o3, 8, %o5			/* IEU0				*/
+	cmp		%o2, -2				/* IEU1		Group		*/
+	be,pn		%XCC, 4b			/* CTI				*/
+	 srlx		%g4, 8, %o4			/* IEU0				*/
+
+	retl						/* CTI+IEU1	Group		*/
+	 sub		%o4, %o5, %o0			/* IEU0				*/
+6:	addcc		%o3, %o4, %g4			/* IEU1				*/
+7:	srlx		%o3, 56, %o5			/* IEU0				*/
+
+	srlx		%g4, 56, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 48, %o5			/* IEU0				*/
+	srlx		%g4, 48, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 40, %o5			/* IEU0				*/
+
+	srlx		%g4, 40, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 32, %o5			/* IEU0				*/
+	srlx		%g4, 32, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 24, %o5			/* IEU0				*/
+
+	srlx		%g4, 24, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 16, %o5			/* IEU0				*/
+	srlx		%g4, 16, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+	bne,pn		%xcc, 8f			/* CTI				*/
+	 srlx		%o3, 8, %o5			/* IEU0				*/
+
+	srlx		%g4, 8, %o4			/* IEU0		Group		*/
+	andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%xcc, 8f			/* CTI				*/
+	 subcc		%o4, %o5, %o4			/* IEU1		Group		*/
+
+	retl						/* CTI+IEU1	Group		*/
+	 sub		%g4, %o3, %o0			/* IEU0				*/
+8:	retl						/* CTI+IEU1	Group		*/
+	 mov		%o4, %o0			/* IEU0				*/
+
+9:	ldub		[%o0], %g4			/* Load		Group		*/
+	add		%o0, 1, %o0			/* IEU0				*/
+	ldub		[%o1], %o3			/* Load		Group		*/
+	sllx		%g1, 32, %g2			/* IEU0				*/
+
+10:	subcc		%o2, 1, %o2			/* IEU1		Group		*/
+	be,pn		%XCC, 8b			/* CTI				*/
+	 sub		%g4, %o3, %o4			/* IEU0				*/
+	add		%o1, 1, %o1			/* IEU0		Group		*/
+
+	cmp		%g4, %o3			/* IEU1				*/
+	bne,pn		%xcc, 8b			/* CTI				*/
+	 lduba		[%o0] ASI_PNF, %g4		/* Load		Group		*/
+	andcc		%o3, 0xff, %g0			/* IEU1				*/
+
+	be,pn		%icc, 4b			/* CTI				*/
+	 lduba		[%o1] ASI_PNF, %o3		/* Load		Group		*/
+	andcc		%o0, 7, %g0			/* IEU1				*/
+	bne,a,pn	%icc, 10b			/* CTI				*/
+
+	 add		%o0, 1, %o0			/* IEU0		Group		*/
+	or		%g1, %g2, %g1			/* IEU1				*/
+	andcc		%o1, 7, %g3			/* IEU1		Group		*/
+	be,pn		%icc, 1b			/* CTI				*/
+
+	 ldxa		[%o0] ASI_PNF, %g4		/* Load				*/
+11:	sllx		%g3, 3, %g5			/* IEU0		Group		*/
+	mov		64, %g6				/* IEU1				*/
+	or		%g1, %g2, %g1			/* IEU0		Group		*/
+	sub		%o1, %g3, %o1			/* IEU1				*/
+
+	sub		%g6, %g5, %g6			/* IEU0		Group		*/
+	ldxa		[%o1] ASI_PNF, %o4		/* Load				*/
+	sllx		%g1, 7, %g2			/* IEU1				*/
+	add		%o1, 8, %o1			/* IEU0		Group		*/
+							/* %g1 = 0101010101010101
+							   %g2 = 8080808080808080
+							   %g3 = %o1 alignment
+							   %g5 = number of bits to shift left
+							   %g6 = number of bits to shift right */
+
+12:	sllx		%o4, %g5, %o3			/* IEU0		Group		*/
+	ldxa		[%o1] ASI_PNF, %o4		/* Load				*/
+	add		%o1, 8, %o1			/* IEU1				*/
+13:	ldxa		[%o0] ASI_PNF, %g4		/* Load		Group		*/
+
+	addcc		%o0, 8, %o0			/* IEU1				*/
+	srlx		%o4, %g6, %o5			/* IEU0				*/
+	subcc		%o2, 8, %o2			/* IEU1		Group		*/
+	bcs,pn		%XCC, 5b			/* CTI				*/
+
+	 or		%o3, %o5, %o3			/* IEU0				*/
+	cmp		%g4, %o3			/* IEU1		Group		*/
+	bne,pn		%xcc, 7b			/* CTI				*/
+	 sub		%g4, %g1, %o5			/* IEU0				*/
+
+#ifdef EIGHTBIT_NOT_RARE
+	andn		%o5, %g4, %o5			/* IEU0		Group		*/
+#endif
+	andcc		%o5, %g2, %g0			/* IEU1		Group		*/
+	be,pt		%xcc, 12b			/* CTI				*/
+	 srlx		%o5, 32, %o5			/* IEU0				*/
+	andcc		%o5, %g2, %g0			/* IEU1		Group		*/
+
+	be,pt		%xcc, 14f			/* CTI				*/
+	 srlx		%g4, 56, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+
+	 srlx		%g4, 48, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+	 srlx		%g4, 40, %o5			/* IEU0				*/
+
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+	 srlx		%g4, 32, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+
+	be,pn		%icc, 4b			/* CTI				*/
+14:	 srlx		%g4, 24, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+
+	 srlx		%g4, 16, %o5			/* IEU0				*/
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+	 srlx		%g4, 8, %o5			/* IEU0				*/
+
+	andcc		%o5, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+	 andcc		%g4, 0xff, %g0			/* IEU1		Group		*/
+	be,pn		%icc, 4b			/* CTI				*/
+
+	 sllx		%o4, %g5, %o3			/* IEU0				*/
+	ldxa		[%o1] ASI_PNF, %o4		/* Load		Group		*/
+	ba,pt		%xcc, 13b			/* CTI				*/
+	 add		%o1, 8, %o1			/* IEU0				*/
+END(strncmp)
+libc_hidden_builtin_def (strncmp)