diff options
Diffstat (limited to 'sysdeps/mips')
| -rw-r--r-- | sysdeps/mips/atomic-machine.h | 13 | ||||
| -rw-r--r-- | sysdeps/mips/nptl/pthread_spin_lock.c | 23 |
2 files changed, 11 insertions, 25 deletions
diff --git a/sysdeps/mips/atomic-machine.h b/sysdeps/mips/atomic-machine.h index 54c182b..16fef6b 100644 --- a/sysdeps/mips/atomic-machine.h +++ b/sysdeps/mips/atomic-machine.h @@ -92,7 +92,15 @@ typedef uintmax_t uatomic_max_t; have no assembly alternative available and want to avoid the __sync_* builtins if at all possible. */ -#define USE_ATOMIC_COMPILER_BUILTINS 1 +# define USE_ATOMIC_COMPILER_BUILTINS 1 + +/* MIPS is an LL/SC machine. However, XLP has a direct atomic exchange + instruction which will be used by __atomic_exchange_n. */ +# ifdef _MIPS_ARCH_XLP +# define ATOMIC_EXCHANGE_USES_CAS 0 +# else +# define ATOMIC_EXCHANGE_USES_CAS 1 +# endif /* Compare and exchange. For all "bool" routines, we return FALSE if exchange succesful. */ @@ -213,7 +221,8 @@ typedef uintmax_t uatomic_max_t; /* This implementation using inline assembly will be removed once glibc requires GCC 4.8 or later to build. */ -#define USE_ATOMIC_COMPILER_BUILTINS 0 +# define USE_ATOMIC_COMPILER_BUILTINS 0 +# define ATOMIC_EXCHANGE_USES_CAS 1 /* Compare and exchange. For all of the "xxx" routines, we expect a "__prev" and a "__cmp" variable to be provided by the enclosing scope, diff --git a/sysdeps/mips/nptl/pthread_spin_lock.c b/sysdeps/mips/nptl/pthread_spin_lock.c deleted file mode 100644 index 19d87a5..0000000 --- a/sysdeps/mips/nptl/pthread_spin_lock.c +++ /dev/null @@ -1,23 +0,0 @@ -/* Copyright (C) 2012-2017 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/>. */ - -#define SPIN_LOCK_READS_BETWEEN_CMPXCHG 1000 - -/* We can't use the normal "#include <nptl/pthread_spin_lock.c>" because - it will resolve to this very file. Using "sysdeps/.." as reference to the - top level directory does the job. */ -#include <sysdeps/../nptl/pthread_spin_lock.c> |