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, 0 insertions, 457 deletions

diff --git a/sysdeps/powerpc/powerpc64/power8/strcasecmp.S b/sysdeps/powerpc/powerpc64/power8/strcasecmp.S
deleted file mode 100644
index 88b17a6eb1..0000000000
--- a/sysdeps/powerpc/powerpc64/power8/strcasecmp.S
+++ /dev/null
@@ -1,457 +0,0 @@
-/* Optimized strcasecmp implementation for PowerPC64.
-   Copyright (C) 2016-2017 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/>.  */
-
-#include <sysdep.h>
-#include <locale-defines.h>
-
-/* int [r3] strcasecmp (const char *s1 [r3], const char *s2 [r4] ) */
-
-#ifndef USE_AS_STRNCASECMP
-#  define __STRCASECMP __strcasecmp
-#  define STRCASECMP   strcasecmp
-#else
-#  define __STRCASECMP __strncasecmp
-#  define STRCASECMP   strncasecmp
-#endif
-/* Convert 16 bytes to lowercase and compare */
-#define TOLOWER()     \
-	vaddubm	v8, v4, v1; \
-	vaddubm	v7, v4, v3; \
-	vcmpgtub	v8, v8, v2; \
-	vsel	v4, v7, v4, v8; \
-	vaddubm	v8, v5, v1; \
-	vaddubm	v7, v5, v3; \
-	vcmpgtub	v8, v8, v2; \
-	vsel	v5, v7, v5, v8; \
-	vcmpequb.	v7, v5, v4;
-
-/*
- * Get 16 bytes for unaligned case.
- * reg1: Vector to hold next 16 bytes.
- * reg2: Address to read from.
- * reg3: Permute control vector.
- * v8: Tmp vector used to mask unwanted bytes.
- * v9: Tmp vector,0 when null is found on first 16 bytes
- */
-#ifdef __LITTLE_ENDIAN__
-#define GET16BYTES(reg1, reg2, reg3) \
-	lvx	reg1, 0, reg2; \
-	vspltisb	v8, -1; \
-	vperm	v8, v8, reg1, reg3; \
-	vcmpequb.	v8, v0, v8; \
-	beq	cr6, 1f; \
-	vspltisb	v9, 0; \
-	b	2f; \
-	.align 4; \
-1: \
-	addi	r6, reg2, 16; \
-	lvx	v9, 0, r6; \
-2: \
-	vperm	reg1, v9, reg1, reg3;
-#else
-#define GET16BYTES(reg1, reg2, reg3) \
-	lvx	reg1, 0, reg2; \
-	vspltisb	 v8, -1; \
-	vperm	v8, reg1, v8,  reg3; \
-	vcmpequb.	v8, v0, v8; \
-	beq	cr6, 1f; \
-	vspltisb	v9, 0; \
-	b	2f; \
-	.align 4; \
-1: \
-	addi	r6, reg2, 16; \
-	lvx	v9, 0, r6; \
-2: \
-	vperm	reg1, reg1, v9, reg3;
-#endif
-
-/* Check null in v4, v5 and convert to lower.  */
-#define CHECKNULLANDCONVERT() \
-	vcmpequb.	v7, v0, v5; \
-	beq	cr6, 3f; \
-	vcmpequb.	v7, v0, v4; \
-	beq	cr6, 3f; \
-	b	L(null_found); \
-	.align  4; \
-3: \
-	TOLOWER()
-
-#ifdef _ARCH_PWR8
-#  define VCLZD_V8_v7	vclzd	v8, v7;
-#  define MFVRD_R3_V1	mfvrd	r3, v1;
-#  define VSUBUDM_V9_V8	vsubudm	v9, v9, v8;
-#  define VPOPCNTD_V8_V8	vpopcntd v8, v8;
-#  define VADDUQM_V7_V8	vadduqm	v9, v7, v8;
-#else
-#  define VCLZD_V8_v7	.long	0x11003fc2
-#  define MFVRD_R3_V1	.long	0x7c230067
-#  define VSUBUDM_V9_V8	.long	0x112944c0
-#  define VPOPCNTD_V8_V8	.long	0x110047c3
-#  define VADDUQM_V7_V8	.long	0x11274100
-#endif
-
-	.machine  power7
-
-ENTRY (__STRCASECMP)
-#ifdef USE_AS_STRNCASECMP
-	CALL_MCOUNT 3
-#else
-	CALL_MCOUNT 2
-#endif
-#define rRTN	r3	/* Return value */
-#define rSTR1	r10	/* 1st string */
-#define rSTR2	r4	/* 2nd string */
-#define rCHAR1	r6	/* Byte read from 1st string */
-#define rCHAR2	r7	/* Byte read from 2nd string */
-#define rADDR1	r8	/* Address of tolower(rCHAR1) */
-#define rADDR2	r12	/* Address of tolower(rCHAR2) */
-#define rLWR1	r8	/* Word tolower(rCHAR1) */
-#define rLWR2	r12	/* Word tolower(rCHAR2) */
-#define rTMP	r9
-#define rLOC	r11	/* Default locale address */
-
-	cmpd	cr7, rRTN, rSTR2
-
-	/* Get locale address.  */
-	ld 	rTMP, __libc_tsd_LOCALE@got@tprel(r2)
-	add 	rLOC, rTMP, __libc_tsd_LOCALE@tls
-	ld	rLOC, 0(rLOC)
-
-	mr	rSTR1, rRTN
-	li	rRTN, 0
-	beqlr	cr7
-#ifdef USE_AS_STRNCASECMP
-	cmpdi	cr7, r5, 0
-	beq	cr7, L(retnull)
-	cmpdi	cr7, r5, 16
-	blt	cr7, L(bytebybyte)
-#endif
-	vspltisb	v0, 0
-	vspltisb	v8, -1
-	/* Check for null in initial characters.
-	   Check max of 16 char depending on the alignment.
-	   If null is present, proceed byte by byte.  */
-	lvx	v4, 0, rSTR1
-#ifdef  __LITTLE_ENDIAN__
-	lvsr	v10, 0, rSTR1	/* Compute mask.  */
-	vperm	v9, v8, v4, v10	/* Mask bits that are not part of string.  */
-#else
-	lvsl	v10, 0, rSTR1
-	vperm	v9, v4, v8, v10
-#endif
-	vcmpequb.	v9, v0, v9	/* Check for null bytes.  */
-	bne	cr6, L(bytebybyte)
-	lvx	v5, 0, rSTR2
-	/* Calculate alignment.  */
-#ifdef __LITTLE_ENDIAN__
-	lvsr	v6, 0, rSTR2
-	vperm	v9, v8, v5, v6	/* Mask bits that are not part of string.  */
-#else
-	lvsl	v6, 0, rSTR2
-	vperm	v9, v5, v8, v6
-#endif
-	vcmpequb.	v9, v0, v9	/* Check for null bytes.  */
-	bne	cr6, L(bytebybyte)
-	/* Check if locale has non ascii characters.  */
-	ld	rTMP, 0(rLOC)
-	addi r6, rTMP,LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES
-	lwz	rTMP, 0(r6)
-	cmpdi	cr7, rTMP, 1
-	beq	cr7, L(bytebybyte)
-
-	/* Load vector registers with values used for TOLOWER.  */
-	/* Load v1 = 0xbf, v2 = 0x19 v3 = 0x20 in each byte.  */
-	vspltisb	v3, 2
-	vspltisb	v9, 4
-	vsl	v3, v3, v9
-	vaddubm	v1, v3, v3
-	vnor	v1, v1, v1
-	vspltisb	v2, 7
-	vsububm	v2, v3, v2
-
-	andi.	rADDR1, rSTR1, 0xF
-	beq	cr0, L(align)
-	addi	r6, rSTR1, 16
-	lvx	v9, 0, r6
-	/* Compute 16 bytes from previous two loads.  */
-#ifdef __LITTLE_ENDIAN__
-	vperm	v4, v9, v4, v10
-#else
-	vperm	v4, v4, v9, v10
-#endif
-L(align):
-	andi.	rADDR2, rSTR2, 0xF
-	beq	cr0, L(align1)
-	addi	r6, rSTR2, 16
-	lvx	v9, 0, r6
-	/* Compute 16 bytes from previous two loads.  */
-#ifdef __LITTLE_ENDIAN__
-	vperm	v5, v9, v5, v6
-#else
-	vperm	v5, v5, v9, v6
-#endif
-L(align1):
-	CHECKNULLANDCONVERT()
-	blt	cr6, L(match)
-	b	L(different)
-	.align 	4
-L(match):
-	clrldi	r6, rSTR1, 60
-	subfic	r7, r6, 16
-#ifdef USE_AS_STRNCASECMP
-	sub	r5, r5, r7
-#endif
-	add	rSTR1, rSTR1, r7
-	add	rSTR2, rSTR2, r7
-	andi.	rADDR2, rSTR2, 0xF
-	addi	rSTR1, rSTR1, -16
-	addi	rSTR2, rSTR2, -16
-	beq	cr0, L(aligned)
-#ifdef __LITTLE_ENDIAN__
-	lvsr	v6, 0, rSTR2
-#else
-	lvsl	v6, 0, rSTR2
-#endif
-	/* There are 2 loops depending on the input alignment.
-	   Each loop gets 16 bytes from s1 and s2, check for null,
-	   convert to lowercase and compare. Loop till difference
-	   or null occurs. */
-L(s1_align):
-	addi	rSTR1, rSTR1, 16
-	addi	rSTR2, rSTR2, 16
-#ifdef USE_AS_STRNCASECMP
-	cmpdi	cr7, r5, 16
-	blt	cr7, L(bytebybyte)
-	addi	r5, r5, -16
-#endif
-	lvx	v4, 0, rSTR1
-	GET16BYTES(v5, rSTR2, v6)
-	CHECKNULLANDCONVERT()
-	blt	cr6, L(s1_align)
-	b	L(different)
-	.align 	4
-L(aligned):
-	addi	rSTR1, rSTR1, 16
-	addi	rSTR2, rSTR2, 16
-#ifdef USE_AS_STRNCASECMP
-	cmpdi	cr7, r5, 16
-	blt	cr7, L(bytebybyte)
-	addi	r5, r5, -16
-#endif
-	lvx	v4, 0, rSTR1
-	lvx	v5, 0, rSTR2
-	CHECKNULLANDCONVERT()
-	blt	cr6, L(aligned)
-
-	/* Calculate and return the difference. */
-L(different):
-	vaddubm	v1, v3, v3
-	vcmpequb	v7, v0, v7
-#ifdef __LITTLE_ENDIAN__
-	/* Count trailing zero.  */
-	vspltisb	v8, -1
-	VADDUQM_V7_V8
-	vandc	v8, v9, v7
-	VPOPCNTD_V8_V8
-	vspltb	v6, v8, 15
-	vcmpequb.	v6, v6, v1
-	blt	cr6, L(shift8)
-#else
-	/* Count leading zero.  */
-	VCLZD_V8_v7
-	vspltb	v6, v8, 7
-	vcmpequb.	v6, v6, v1
-	blt	cr6, L(shift8)
-	vsro	v8, v8, v1
-#endif
-	b	L(skipsum)
-	.align  4
-L(shift8):
-	vsumsws		v8, v8, v0
-L(skipsum):
-#ifdef __LITTLE_ENDIAN__
-	/* Shift registers based on leading zero count.  */
-	vsro	v6, v5, v8
-	vsro	v7, v4, v8
-	/* Merge and move to GPR.  */
-	vmrglb	v6, v6, v7
-	vslo	v1, v6, v1
-	MFVRD_R3_V1
-	/* Place the characters that are different in first position.  */
-	sldi	rSTR2, rRTN, 56
-	srdi	rSTR2, rSTR2, 56
-	sldi	rSTR1, rRTN, 48
-	srdi	rSTR1, rSTR1, 56
-#else
-	vslo	v6, v5, v8
-	vslo	v7, v4, v8
-	vmrghb	v1, v6, v7
-	MFVRD_R3_V1
-	srdi	rSTR2, rRTN, 48
-	sldi	rSTR2, rSTR2, 56
-	srdi	rSTR2, rSTR2, 56
-	srdi	rSTR1, rRTN, 56
-#endif
-	subf  	rRTN, rSTR1, rSTR2
-	extsw 	rRTN, rRTN
-	blr
-
-	.align  4
-	/* OK. We've hit the end of the string. We need to be careful that
-	   we don't compare two strings as different because of junk beyond
-	   the end of the strings...  */
-L(null_found):
-	vaddubm	v10, v3, v3
-#ifdef __LITTLE_ENDIAN__
-	/* Count trailing zero.  */
-	vspltisb	v8, -1
-	VADDUQM_V7_V8
-	vandc	v8, v9, v7
-	VPOPCNTD_V8_V8
-	vspltb	v6, v8, 15
-	vcmpequb.	v6, v6, v10
-	blt	cr6, L(shift_8)
-#else
-	/* Count leading zero.  */
-	VCLZD_V8_v7
-	vspltb	v6, v8, 7
-	vcmpequb.	v6, v6, v10
-	blt	cr6, L(shift_8)
-	vsro	v8, v8, v10
-#endif
-	b	L(skipsum1)
-	.align  4
-L(shift_8):
-	vsumsws	v8, v8, v0
-L(skipsum1):
-	/* Calculate shift count based on count of zero.  */
-	vspltisb	v10, 7
-	vslb	v10, v10, v10
-	vsldoi	v9, v0, v10, 1
-	VSUBUDM_V9_V8
-	vspltisb	v8, 8
-	vsldoi	v8, v0, v8, 1
-	VSUBUDM_V9_V8
-	/* Shift and remove junk after null character.  */
-#ifdef __LITTLE_ENDIAN__
-	vslo	v5, v5, v9
-	vslo	v4, v4, v9
-#else
-	vsro	v5, v5, v9
-	vsro	v4, v4, v9
-#endif
-	/* Convert and compare 16 bytes.  */
-	TOLOWER()
-	blt	cr6, L(retnull)
-	b	L(different)
-	.align  4
-L(retnull):
-	li	rRTN, 0
-	blr
-	.align  4
-L(bytebybyte):
-	/* Unrolling loop for POWER: loads are done with 'lbz' plus
-	offset and string descriptors are only updated in the end
-	of loop unrolling. */
-	ld	rLOC, LOCALE_CTYPE_TOLOWER(rLOC)
-	lbz	rCHAR1, 0(rSTR1)	/* Load char from s1 */
-	lbz	rCHAR2, 0(rSTR2)	/* Load char from s2 */
-#ifdef USE_AS_STRNCASECMP
-	rldicl	rTMP, r5, 62, 2
-	cmpdi	cr7, rTMP, 0
-	beq	cr7, L(lessthan4)
-	mtctr	rTMP
-#endif
-L(loop):
-	cmpdi	rCHAR1, 0		/* *s1 == '\0' ? */
-	sldi	rADDR1, rCHAR1, 2	/* Calculate address for tolower(*s1) */
-	sldi	rADDR2, rCHAR2, 2	/* Calculate address for tolower(*s2) */
-	lwzx	rLWR1, rLOC, rADDR1	/* Load tolower(*s1) */
-	lwzx	rLWR2, rLOC, rADDR2	/* Load tolower(*s2) */
-	cmpw	cr1, rLWR1, rLWR2	/* r = tolower(*s1) == tolower(*s2) ? */
-	crorc	4*cr1+eq,eq,4*cr1+eq	/* (*s1 != '\0') || (r == 1) */
-	beq	cr1, L(done)
-	lbz	rCHAR1, 1(rSTR1)
-	lbz	rCHAR2, 1(rSTR2)
-	cmpdi	rCHAR1, 0
-	sldi	rADDR1, rCHAR1, 2
-	sldi	rADDR2, rCHAR2, 2
-	lwzx	rLWR1, rLOC, rADDR1
-	lwzx	rLWR2, rLOC, rADDR2
-	cmpw	cr1, rLWR1, rLWR2
-	crorc	4*cr1+eq,eq,4*cr1+eq
-	beq	cr1, L(done)
-	lbz	rCHAR1, 2(rSTR1)
-	lbz	rCHAR2, 2(rSTR2)
-	cmpdi	rCHAR1, 0
-	sldi	rADDR1, rCHAR1, 2
-	sldi	rADDR2, rCHAR2, 2
-	lwzx	rLWR1, rLOC, rADDR1
-	lwzx	rLWR2, rLOC, rADDR2
-	cmpw	cr1, rLWR1, rLWR2
-	crorc	4*cr1+eq,eq,4*cr1+eq
-	beq	cr1, L(done)
-	lbz	rCHAR1, 3(rSTR1)
-	lbz	rCHAR2, 3(rSTR2)
-	cmpdi	rCHAR1, 0
-	/* Increment both string descriptors */
-	addi	rSTR1, rSTR1, 4
-	addi	rSTR2, rSTR2, 4
-	sldi	rADDR1, rCHAR1, 2
-	sldi	rADDR2, rCHAR2, 2
-	lwzx	rLWR1, rLOC, rADDR1
-	lwzx	rLWR2, rLOC, rADDR2
-	cmpw	cr1, rLWR1, rLWR2
-	crorc	4*cr1+eq,eq,4*cr1+eq
-	beq     cr1, L(done)
-	lbz	rCHAR1, 0(rSTR1)	/* Load char from s1 */
-	lbz	rCHAR2, 0(rSTR2)	/* Load char from s2 */
-#ifdef USE_AS_STRNCASECMP
-	bdnz	L(loop)
-#else
-	b	L(loop)
-#endif
-#ifdef USE_AS_STRNCASECMP
-L(lessthan4):
-	clrldi	r5, r5, 62
-	cmpdi	cr7, r5, 0
-	beq	cr7, L(retnull)
-	mtctr	r5
-L(loop1):
-	cmpdi	rCHAR1, 0
-	sldi	rADDR1, rCHAR1, 2
-	sldi	rADDR2, rCHAR2, 2
-	lwzx	rLWR1, rLOC, rADDR1
-	lwzx	rLWR2, rLOC, rADDR2
-	cmpw	cr1, rLWR1, rLWR2
-	crorc	4*cr1+eq,eq,4*cr1+eq
-	beq	cr1, L(done)
-	addi	rSTR1, rSTR1, 1
-	addi	rSTR2, rSTR2, 1
-	lbz	rCHAR1, 0(rSTR1)
-	lbz	rCHAR2, 0(rSTR2)
-	bdnz	L(loop1)
-#endif
-L(done):
-	subf	r0, rLWR2, rLWR1
-	extsw	rRTN, r0
-	blr
-END (__STRCASECMP)
-
-weak_alias (__STRCASECMP, STRCASECMP)
-libc_hidden_builtin_def (__STRCASECMP)