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, 709 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/i386/i686/multiarch/memchr-sse2.S b/REORG.TODO/sysdeps/i386/i686/multiarch/memchr-sse2.S
new file mode 100644
index 0000000000..172d70de13
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/i686/multiarch/memchr-sse2.S
@@ -0,0 +1,709 @@
+/* Optimized memchr with sse2 without bsf
+   Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   Contributed by Intel Corporation.
+   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/>.  */
+
+#if IS_IN (libc)
+
+# include <sysdep.h>
+
+# define CFI_PUSH(REG)	\
+	cfi_adjust_cfa_offset (4);	\
+	cfi_rel_offset (REG, 0)
+
+# define CFI_POP(REG)	\
+	cfi_adjust_cfa_offset (-4);	\
+	cfi_restore (REG)
+
+# define PUSH(REG) pushl REG; CFI_PUSH (REG)
+# define POP(REG) popl REG; CFI_POP (REG)
+
+# ifndef USE_AS_RAWMEMCHR
+#  define ENTRANCE PUSH(%edi);
+#  define PARMS  8
+#  define RETURN  POP(%edi); ret; CFI_PUSH(%edi);
+# else
+#  define ENTRANCE
+#  define PARMS  4
+# endif
+
+# define STR1  PARMS
+# define STR2  STR1+4
+
+# ifndef USE_AS_RAWMEMCHR
+#  define LEN   STR2+4
+# endif
+
+# ifndef MEMCHR
+#  define MEMCHR __memchr_sse2
+# endif
+
+	atom_text_section
+ENTRY (MEMCHR)
+	ENTRANCE
+	mov	STR1(%esp), %ecx
+	movd	STR2(%esp), %xmm1
+# ifndef USE_AS_RAWMEMCHR
+	mov	LEN(%esp), %edx
+	test	%edx, %edx
+	jz	L(return_null)
+# endif
+
+	punpcklbw %xmm1, %xmm1
+# ifndef USE_AS_RAWMEMCHR
+	mov	%ecx, %edi
+# else
+	mov	%ecx, %edx
+# endif
+	punpcklbw %xmm1, %xmm1
+
+	and	$63, %ecx
+	pshufd	$0, %xmm1, %xmm1
+	cmp	$48, %ecx
+	ja	L(crosscache)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqu	(%edi), %xmm0
+# else
+	movdqu	(%edx), %xmm0
+# endif
+	pcmpeqb	%xmm1, %xmm0
+	pmovmskb %xmm0, %eax
+	test	%eax, %eax
+# ifndef USE_AS_RAWMEMCHR
+	jnz	L(match_case2_prolog)
+
+	sub	$16, %edx
+	jbe	L(return_null)
+	lea	16(%edi), %edi
+	and	$15, %ecx
+	and	$-16, %edi
+	add	%ecx, %edx
+# else
+	jnz	L(match_case1_prolog)
+	lea	16(%edx), %edx
+	and	$-16, %edx
+# endif
+	jmp	L(loop_prolog)
+
+	.p2align 4
+L(crosscache):
+	and	$15, %ecx
+# ifndef USE_AS_RAWMEMCHR
+	and	$-16, %edi
+	movdqa	(%edi), %xmm0
+# else
+	and	$-16, %edx
+	movdqa	(%edx), %xmm0
+# endif
+	pcmpeqb	%xmm1, %xmm0
+	pmovmskb %xmm0, %eax
+	sar	%cl, %eax
+	test	%eax, %eax
+
+# ifndef USE_AS_RAWMEMCHR
+	jnz	L(match_case2_prolog1)
+        /* "ecx" is less than 16.  Calculate "edx + ecx - 16" by using
+	   "edx - (16 - ecx)" instead of "(edx + ecx) - 16" to void
+	   possible addition overflow.  */
+	neg	%ecx
+	add	$16, %ecx
+	sub	%ecx, %edx
+	jbe	L(return_null)
+	lea	16(%edi), %edi
+# else
+	jnz	L(match_case1_prolog1)
+	lea	16(%edx), %edx
+# endif
+
+	.p2align 4
+L(loop_prolog):
+# ifndef USE_AS_RAWMEMCHR
+	sub	$64, %edx
+	jbe	L(exit_loop)
+	movdqa	(%edi), %xmm0
+# else
+	movdqa	(%edx), %xmm0
+# endif
+	pcmpeqb	%xmm1, %xmm0
+	xor	%ecx, %ecx
+	pmovmskb %xmm0, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	16(%edi), %xmm2
+# else
+	movdqa	16(%edx), %xmm2
+# endif
+	pcmpeqb	%xmm1, %xmm2
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm2, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	32(%edi), %xmm3
+# else
+	movdqa	32(%edx), %xmm3
+# endif
+	pcmpeqb	%xmm1, %xmm3
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm3, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	48(%edi), %xmm4
+# else
+	movdqa	48(%edx), %xmm4
+# endif
+	pcmpeqb	%xmm1, %xmm4
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm4, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	lea	64(%edi), %edi
+	sub	$64, %edx
+	jbe	L(exit_loop)
+
+	movdqa	(%edi), %xmm0
+# else
+	lea	64(%edx), %edx
+	movdqa	(%edx), %xmm0
+# endif
+	pcmpeqb	%xmm1, %xmm0
+	xor	%ecx, %ecx
+	pmovmskb %xmm0, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	16(%edi), %xmm2
+# else
+	movdqa	16(%edx), %xmm2
+# endif
+	pcmpeqb	%xmm1, %xmm2
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm2, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	32(%edi), %xmm3
+# else
+	movdqa	32(%edx), %xmm3
+# endif
+	pcmpeqb	%xmm1, %xmm3
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm3, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	48(%edi), %xmm4
+# else
+	movdqa	48(%edx), %xmm4
+# endif
+	pcmpeqb	%xmm1, %xmm4
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm4, %eax
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	lea	64(%edi), %edi
+	mov	%edi, %ecx
+	and	$-64, %edi
+	and	$63, %ecx
+	add	%ecx, %edx
+# else
+	lea	64(%edx), %edx
+	and	$-64, %edx
+# endif
+
+	.p2align 4
+L(align64_loop):
+
+# ifndef USE_AS_RAWMEMCHR
+	sub	$64, %edx
+	jbe	L(exit_loop)
+	movdqa	(%edi), %xmm0
+	movdqa	16(%edi), %xmm2
+	movdqa	32(%edi), %xmm3
+	movdqa	48(%edi), %xmm4
+# else
+	movdqa	(%edx), %xmm0
+	movdqa	16(%edx), %xmm2
+	movdqa	32(%edx), %xmm3
+	movdqa	48(%edx), %xmm4
+# endif
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm1, %xmm2
+	pcmpeqb	%xmm1, %xmm3
+	pcmpeqb	%xmm1, %xmm4
+
+	pmaxub	%xmm0, %xmm3
+	pmaxub	%xmm2, %xmm4
+	pmaxub	%xmm3, %xmm4
+# ifndef USE_AS_RAWMEMCHR
+	add	$64, %edi
+# else
+	add	$64, %edx
+# endif
+	pmovmskb %xmm4, %eax
+
+	test	%eax, %eax
+	jz	L(align64_loop)
+
+# ifndef USE_AS_RAWMEMCHR
+	sub	$64, %edi
+# else
+	sub	$64, %edx
+# endif
+
+	pmovmskb %xmm0, %eax
+	xor	%ecx, %ecx
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+	pmovmskb %xmm2, %eax
+	lea	16(%ecx), %ecx
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	movdqa	32(%edi), %xmm3
+# else
+	movdqa	32(%edx), %xmm3
+# endif
+	pcmpeqb	%xmm1, %xmm3
+	pmovmskb %xmm3, %eax
+	lea	16(%ecx), %ecx
+	test	%eax, %eax
+	jnz	L(match_case1)
+
+# ifndef USE_AS_RAWMEMCHR
+	pcmpeqb	48(%edi), %xmm1
+# else
+	pcmpeqb	48(%edx), %xmm1
+# endif
+	pmovmskb %xmm1, %eax
+	lea	16(%ecx), %ecx
+
+	.p2align 4
+L(match_case1):
+# ifndef USE_AS_RAWMEMCHR
+	add	%ecx, %edi
+# else
+L(match_case1_prolog1):
+	add	%ecx, %edx
+L(match_case1_prolog):
+# endif
+	test	%al, %al
+	jz	L(match_case1_high)
+	mov	%al, %cl
+	and	$15, %cl
+	jz	L(match_case1_8)
+	test	$0x01, %al
+	jnz	L(ExitCase1_1)
+	test	$0x02, %al
+	jnz	L(ExitCase1_2)
+	test	$0x04, %al
+	jnz	L(ExitCase1_3)
+# ifndef USE_AS_RAWMEMCHR
+	lea	3(%edi), %eax
+	RETURN
+# else
+	lea	3(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(match_case1_8):
+	test	$0x10, %al
+	jnz	L(ExitCase1_5)
+	test	$0x20, %al
+	jnz	L(ExitCase1_6)
+	test	$0x40, %al
+	jnz	L(ExitCase1_7)
+# ifndef USE_AS_RAWMEMCHR
+	lea	7(%edi), %eax
+	RETURN
+# else
+	lea	7(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(match_case1_high):
+	mov	%ah, %ch
+	and	$15, %ch
+	jz	L(match_case1_high_8)
+	test	$0x01, %ah
+	jnz	L(ExitCase1_9)
+	test	$0x02, %ah
+	jnz	L(ExitCase1_10)
+	test	$0x04, %ah
+	jnz	L(ExitCase1_11)
+# ifndef USE_AS_RAWMEMCHR
+	lea	11(%edi), %eax
+	RETURN
+# else
+	lea	11(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(match_case1_high_8):
+	test	$0x10, %ah
+	jnz	L(ExitCase1_13)
+	test	$0x20, %ah
+	jnz	L(ExitCase1_14)
+	test	$0x40, %ah
+	jnz	L(ExitCase1_15)
+# ifndef USE_AS_RAWMEMCHR
+	lea	15(%edi), %eax
+	RETURN
+# else
+	lea	15(%edx), %eax
+	ret
+# endif
+
+# ifndef USE_AS_RAWMEMCHR
+	.p2align 4
+L(exit_loop):
+	add	$64, %edx
+
+	movdqa	(%edi), %xmm0
+	pcmpeqb	%xmm1, %xmm0
+	xor	%ecx, %ecx
+	pmovmskb %xmm0, %eax
+	test	%eax, %eax
+	jnz	L(match_case2)
+	cmp	$16, %edx
+	jbe	L(return_null)
+
+	movdqa	16(%edi), %xmm2
+	pcmpeqb	%xmm1, %xmm2
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm2, %eax
+	test	%eax, %eax
+	jnz	L(match_case2)
+	cmp	$32, %edx
+	jbe	L(return_null)
+
+	movdqa	32(%edi), %xmm3
+	pcmpeqb	%xmm1, %xmm3
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm3, %eax
+	test	%eax, %eax
+	jnz	L(match_case2)
+	cmp	$48, %edx
+	jbe	L(return_null)
+
+	pcmpeqb	48(%edi), %xmm1
+	lea	16(%ecx), %ecx
+	pmovmskb %xmm1, %eax
+	test	%eax, %eax
+	jnz	L(match_case2)
+
+	xor	%eax, %eax
+	RETURN
+# endif
+
+	.p2align 4
+L(ExitCase1_1):
+# ifndef USE_AS_RAWMEMCHR
+	mov	%edi, %eax
+	RETURN
+# else
+	mov	%edx, %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_2):
+# ifndef USE_AS_RAWMEMCHR
+	lea	1(%edi), %eax
+	RETURN
+# else
+	lea	1(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_3):
+# ifndef USE_AS_RAWMEMCHR
+	lea	2(%edi), %eax
+	RETURN
+# else
+	lea	2(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_5):
+# ifndef USE_AS_RAWMEMCHR
+	lea	4(%edi), %eax
+	RETURN
+# else
+	lea	4(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_6):
+# ifndef USE_AS_RAWMEMCHR
+	lea	5(%edi), %eax
+	RETURN
+# else
+	lea	5(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_7):
+# ifndef USE_AS_RAWMEMCHR
+	lea	6(%edi), %eax
+	RETURN
+# else
+	lea	6(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_9):
+# ifndef USE_AS_RAWMEMCHR
+	lea	8(%edi), %eax
+	RETURN
+# else
+	lea	8(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_10):
+# ifndef USE_AS_RAWMEMCHR
+	lea	9(%edi), %eax
+	RETURN
+# else
+	lea	9(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_11):
+# ifndef USE_AS_RAWMEMCHR
+	lea	10(%edi), %eax
+	RETURN
+# else
+	lea	10(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_13):
+# ifndef USE_AS_RAWMEMCHR
+	lea	12(%edi), %eax
+	RETURN
+# else
+	lea	12(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_14):
+# ifndef USE_AS_RAWMEMCHR
+	lea	13(%edi), %eax
+	RETURN
+# else
+	lea	13(%edx), %eax
+	ret
+# endif
+
+	.p2align 4
+L(ExitCase1_15):
+# ifndef USE_AS_RAWMEMCHR
+	lea	14(%edi), %eax
+	RETURN
+# else
+	lea	14(%edx), %eax
+	ret
+# endif
+
+# ifndef USE_AS_RAWMEMCHR
+	.p2align 4
+L(match_case2):
+	sub	%ecx, %edx
+L(match_case2_prolog1):
+	add	%ecx, %edi
+L(match_case2_prolog):
+	test	%al, %al
+	jz	L(match_case2_high)
+	mov	%al, %cl
+	and	$15, %cl
+	jz	L(match_case2_8)
+	test	$0x01, %al
+	jnz	L(ExitCase2_1)
+	test	$0x02, %al
+	jnz	L(ExitCase2_2)
+	test	$0x04, %al
+	jnz	L(ExitCase2_3)
+	sub	$4, %edx
+	jb	L(return_null)
+	lea	3(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(match_case2_8):
+	test	$0x10, %al
+	jnz	L(ExitCase2_5)
+	test	$0x20, %al
+	jnz	L(ExitCase2_6)
+	test	$0x40, %al
+	jnz	L(ExitCase2_7)
+	sub	$8, %edx
+	jb	L(return_null)
+	lea	7(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(match_case2_high):
+	mov	%ah, %ch
+	and	$15, %ch
+	jz	L(match_case2_high_8)
+	test	$0x01, %ah
+	jnz	L(ExitCase2_9)
+	test	$0x02, %ah
+	jnz	L(ExitCase2_10)
+	test	$0x04, %ah
+	jnz	L(ExitCase2_11)
+	sub	$12, %edx
+	jb	L(return_null)
+	lea	11(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(match_case2_high_8):
+	test	$0x10, %ah
+	jnz	L(ExitCase2_13)
+	test	$0x20, %ah
+	jnz	L(ExitCase2_14)
+	test	$0x40, %ah
+	jnz	L(ExitCase2_15)
+	sub	$16, %edx
+	jb	L(return_null)
+	lea	15(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_1):
+	mov	%edi, %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_2):
+	sub	$2, %edx
+	jb	L(return_null)
+	lea	1(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_3):
+	sub	$3, %edx
+	jb	L(return_null)
+	lea	2(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_5):
+	sub	$5, %edx
+	jb	L(return_null)
+	lea	4(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_6):
+	sub	$6, %edx
+	jb	L(return_null)
+	lea	5(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_7):
+	sub	$7, %edx
+	jb	L(return_null)
+	lea	6(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_9):
+	sub	$9, %edx
+	jb	L(return_null)
+	lea	8(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_10):
+	sub	$10, %edx
+	jb	L(return_null)
+	lea	9(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_11):
+	sub	$11, %edx
+	jb	L(return_null)
+	lea	10(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_13):
+	sub	$13, %edx
+	jb	L(return_null)
+	lea	12(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_14):
+	sub	$14, %edx
+	jb	L(return_null)
+	lea	13(%edi), %eax
+	RETURN
+
+	.p2align 4
+L(ExitCase2_15):
+	sub	$15, %edx
+	jb	L(return_null)
+	lea	14(%edi), %eax
+	RETURN
+# endif
+
+	.p2align 4
+L(return_null):
+	xor	%eax, %eax
+# ifndef USE_AS_RAWMEMCHR
+	RETURN
+# else
+	ret
+# endif
+
+END (MEMCHR)
+#endif