[glibc] x86: Use x86/nptl/pthreaddef.h

[H.J. Lu <hjl@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=89de9d3958ff4e14f438c3f6800fac80901e2c2f

commit 89de9d3958ff4e14f438c3f6800fac80901e2c2f
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Feb 12 09:57:30 2021 -0800

    x86: Use x86/nptl/pthreaddef.h
    
    1. Move sysdeps/i386/nptl/pthreaddef.h to sysdeps/x86/nptl/pthreaddef.h.
    2. Remove sysdeps/x86_64/nptl/pthreaddef.h.
    
    Reviewed-by: DJ Delorie <dj@redhat.com>

Diff:
---
 sysdeps/{i386 => x86}/nptl/pthreaddef.h |  8 +++++-
 sysdeps/x86_64/nptl/pthreaddef.h        | 47 ---------------------------------
 2 files changed, 7 insertions(+), 48 deletions(-)

diff --git a/sysdeps/i386/nptl/pthreaddef.h b/sysdeps/x86/nptl/pthreaddef.h
similarity index 88%
rename from sysdeps/i386/nptl/pthreaddef.h
rename to sysdeps/x86/nptl/pthreaddef.h
index a488cac603..6ff7d601eb 100644
--- a/sysdeps/i386/nptl/pthreaddef.h
+++ b/sysdeps/x86/nptl/pthreaddef.h
@@ -40,4 +40,10 @@
 
 
 /* Location of current stack frame.  */
-#define CURRENT_STACK_FRAME	__builtin_frame_address (0)
+#ifdef __x86_64__
+/* The frame pointer is not usable.  */
+# define CURRENT_STACK_FRAME \
+  ({ register char *frame __asm__("rsp"); frame; })
+#else
+# define CURRENT_STACK_FRAME	__builtin_frame_address (0)
+#endif
diff --git a/sysdeps/x86_64/nptl/pthreaddef.h b/sysdeps/x86_64/nptl/pthreaddef.h
deleted file mode 100644
index a8b5fa4c45..0000000000
--- a/sysdeps/x86_64/nptl/pthreaddef.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-/* Default stack size.  */
-#define ARCH_STACK_DEFAULT_SIZE	(2 * 1024 * 1024)
-
-/* Minimum guard size.  */
-#define ARCH_MIN_GUARD_SIZE 0
-
-/* Required stack pointer alignment at beginning.  SSE requires 16
-   bytes.  */
-#define STACK_ALIGN		16
-
-/* Minimal stack size after allocating thread descriptor and guard size.  */
-#define MINIMAL_REST_STACK	2048
-
-/* Alignment requirement for TCB.
-
-   We need to store post-AVX vector registers in the TCB and we want the
-   storage to be aligned to at least 32 bytes.
-
-   Some processors such as Intel Atom pay a big penalty on every
-   access using a segment override if that segment's base is not
-   aligned to the size of a cache line.  (See Intel 64 and IA-32
-   Architectures Optimization Reference Manual, section 13.3.3.3,
-   "Segment Base".)  On such machines, a cache line is 64 bytes.  */
-#define TCB_ALIGNMENT		64
-
-
-/* Location of current stack frame.  The frame pointer is not usable.  */
-#define CURRENT_STACK_FRAME \
-  ({ register char *frame __asm__("rsp"); frame; })