arm: add non-assembly versions of pthread_spin_lock/pthread_spin_trylock

Sync pthread_spin_lock/pthread_spin_trylock with GNU libc as it avoids
any usage of deprecated SWP instruction. This allows to build uClibc-ng
for ARMv8 Cortex-A53 CPU in 32 Bit mode.

1 files changed, 0 insertions, 30 deletions

diff --git a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S
deleted file mode 100644
index a9c07c87d..000000000
--- a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Copyright (C) 2005 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>
-
-	.text
-	.align	4
-
-ENTRY (pthread_spin_lock)
-	mov	r1, #1
-1:	swp	r2, r1, [r0]
-	teq	r2, #0
-	bne	1b
-	mov	r0, #0
-	PSEUDO_RET_NOERRNO
-END (pthread_spin_lock)