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, 57 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/x86_64/multiarch/strchr.S b/REORG.TODO/sysdeps/x86_64/multiarch/strchr.S
new file mode 100644
index 0000000000..c9f54ca2e2
--- /dev/null
+++ b/REORG.TODO/sysdeps/x86_64/multiarch/strchr.S
@@ -0,0 +1,57 @@
+/* Multiple versions of strchr
+   Copyright (C) 2009-2017 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 <init-arch.h>
+
+
+/* Define multiple versions only for the definition in libc.  */
+#if IS_IN (libc)
+	.text
+ENTRY(strchr)
+	.type	strchr, @gnu_indirect_function
+	LOAD_RTLD_GLOBAL_RO_RDX
+	leaq	__strchr_sse2(%rip), %rax
+2:	HAS_ARCH_FEATURE (Slow_BSF)
+	jz	3f
+	leaq    __strchr_sse2_no_bsf(%rip), %rax
+3:	ret
+END(strchr)
+
+
+
+# undef ENTRY
+# define ENTRY(name) \
+	.type __strchr_sse2, @function; \
+	.align 16; \
+	.globl __strchr_sse2; \
+	.hidden __strchr_sse2; \
+	__strchr_sse2: cfi_startproc; \
+	CALL_MCOUNT
+# undef END
+# define END(name) \
+	cfi_endproc; .size __strchr_sse2, .-__strchr_sse2
+# undef libc_hidden_builtin_def
+/* It doesn't make sense to send libc-internal strchr calls through a PLT.
+   The speedup we get from using SSE4.2 instruction is likely eaten away
+   by the indirect call in the PLT.  */
+# define libc_hidden_builtin_def(name) \
+	.globl __GI_strchr; __GI_strchr = __strchr_sse2
+#endif
+
+#include "../strchr.S"