diff options
Diffstat (limited to 'libatomic/config/linux/arm/host-config.h')
| -rw-r--r-- | libatomic/config/linux/arm/host-config.h | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/libatomic/config/linux/arm/host-config.h b/libatomic/config/linux/arm/host-config.h deleted file mode 100644 index 08f5ad3f77..0000000000 --- a/libatomic/config/linux/arm/host-config.h +++ /dev/null @@ -1,179 +0,0 @@ -/* Copyright (C) 2012-2017 Free Software Foundation, Inc. - Contributed by Richard Henderson <rth@redhat.com>. - - This file is part of the GNU Atomic Library (libatomic). - - Libatomic is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - Libatomic 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 General Public License for - more details. - - Under Section 7 of GPL version 3, you are granted additional - permissions described in the GCC Runtime Library Exception, version - 3.1, as published by the Free Software Foundation. - - You should have received a copy of the GNU General Public License and - a copy of the GCC Runtime Library Exception along with this program; - see the files COPYING3 and COPYING.RUNTIME respectively. If not, see - <http://www.gnu.org/licenses/>. */ - -#include <config/arm/arm-config.h> - - -/* Kernel helper for 32-bit compare-and-exchange. */ -typedef int (__kernel_cmpxchg_t) (UWORD oldval, UWORD newval, UWORD *ptr); -#define __kernel_cmpxchg (*(__kernel_cmpxchg_t *) 0xffff0fc0) - -/* Kernel helper for 64-bit compare-and-exchange. */ -typedef int (__kernel_cmpxchg64_t) (const U_8 * oldval, const U_8 * newval, - U_8 *ptr); -#define __kernel_cmpxchg64 (*(__kernel_cmpxchg64_t *) 0xffff0f60) - -/* Kernel helper for memory barrier. */ -typedef void (__kernel_dmb_t) (void); -#define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0) - -/* Kernel helper page version number. */ -#define __kernel_helper_version (*(unsigned int *)0xffff0ffc) - - -#ifndef HAVE_STREX -static inline bool -atomic_compare_exchange_w (UWORD *mptr, UWORD *eptr, UWORD newval, - bool weak_p UNUSED, int sm UNUSED, int fm UNUSED) -{ - bool ret = true; - UWORD oldval; - - oldval = *eptr; - if (__builtin_expect (__kernel_cmpxchg (oldval, newval, mptr) != 0, 0)) - { - oldval = *mptr; - ret = false; - } - *eptr = oldval; - - return ret; -} -# define atomic_compare_exchange_w atomic_compare_exchange_w -# if N == WORDSIZE -# define atomic_compare_exchange_n atomic_compare_exchange_w -# endif -#endif /* HAVE_STREX */ - -#if !defined(HAVE_STREXBHD) && defined(HAVE_KERNEL64) && N == 8 -static inline bool -atomic_compare_exchange_n (UTYPE *mptr, UTYPE *eptr, UTYPE newval, - bool weak_p UNUSED, int sm UNUSED, int fm UNUSED) -{ - if (__kernel_cmpxchg64 (eptr, &newval, mptr) == 0) - return true; - else - { - *eptr = *mptr; - return false; - } -} -#define atomic_compare_exchange_n atomic_compare_exchange_n -#endif - -#if !defined(HAVE_DMB) && !defined(HAVE_DMB_MCR) -static inline void -pre_barrier(int model UNUSED) -{ - __kernel_dmb (); -} - -static inline void -post_barrier(int model UNUSED) -{ - __kernel_dmb (); -} -# define pre_post_barrier 1 -#endif /* !HAVE_DMB */ - -#if HAVE_IFUNC -extern bool libat_have_strexbhd HIDDEN; - -# define IFUNC_COND_1 libat_have_strexbhd -# define IFUNC_COND_2 (__kernel_helper_version >= 5) - -/* Alternative 1 is -march=armv7-a -- we have everything native. */ -# if IFUNC_ALT == 1 -# undef HAVE_ATOMIC_CAS_1 -# undef HAVE_ATOMIC_CAS_2 -# undef HAVE_ATOMIC_CAS_4 -# undef HAVE_ATOMIC_CAS_8 -# undef HAVE_ATOMIC_EXCHANGE_1 -# undef HAVE_ATOMIC_EXCHANGE_2 -# undef HAVE_ATOMIC_EXCHANGE_4 -# undef HAVE_ATOMIC_EXCHANGE_8 -# undef HAVE_ATOMIC_LDST_1 -# undef HAVE_ATOMIC_LDST_2 -# undef HAVE_ATOMIC_LDST_4 -# undef HAVE_ATOMIC_LDST_8 -# undef HAVE_ATOMIC_FETCH_OP_1 -# undef HAVE_ATOMIC_FETCH_OP_2 -# undef HAVE_ATOMIC_FETCH_OP_4 -# undef HAVE_ATOMIC_FETCH_OP_8 -# undef HAVE_ATOMIC_TAS_1 -# undef HAVE_ATOMIC_TAS_2 -# undef HAVE_ATOMIC_TAS_4 -# undef HAVE_ATOMIC_TAS_8 -# define HAVE_ATOMIC_CAS_1 1 -# define HAVE_ATOMIC_CAS_2 1 -# define HAVE_ATOMIC_CAS_4 1 -# define HAVE_ATOMIC_CAS_8 1 -# define HAVE_ATOMIC_EXCHANGE_1 1 -# define HAVE_ATOMIC_EXCHANGE_2 1 -# define HAVE_ATOMIC_EXCHANGE_4 1 -# define HAVE_ATOMIC_EXCHANGE_8 1 -# define HAVE_ATOMIC_LDST_1 1 -# define HAVE_ATOMIC_LDST_2 1 -# define HAVE_ATOMIC_LDST_4 1 -# define HAVE_ATOMIC_LDST_8 1 -# define HAVE_ATOMIC_FETCH_OP_1 1 -# define HAVE_ATOMIC_FETCH_OP_2 1 -# define HAVE_ATOMIC_FETCH_OP_4 1 -# define HAVE_ATOMIC_FETCH_OP_8 1 -# define HAVE_ATOMIC_TAS_1 1 -# define HAVE_ATOMIC_TAS_2 1 -# define HAVE_ATOMIC_TAS_4 1 -# define HAVE_ATOMIC_TAS_8 1 -# endif /* IFUNC_ALT == 1 */ - -# undef MAYBE_HAVE_ATOMIC_CAS_1 -# define MAYBE_HAVE_ATOMIC_CAS_1 IFUNC_COND_1 -# undef MAYBE_HAVE_ATOMIC_EXCHANGE_1 -# define MAYBE_HAVE_ATOMIC_EXCHANGE_1 MAYBE_HAVE_ATOMIC_CAS_1 -# undef MAYBE_HAVE_ATOMIC_LDST_1 -# define MAYBE_HAVE_ATOMIC_LDST_1 MAYBE_HAVE_ATOMIC_CAS_1 -# undef MAYBE_HAVE_ATOMIC_CAS_2 -# define MAYBE_HAVE_ATOMIC_CAS_2 IFUNC_COND_1 -# undef MAYBE_HAVE_ATOMIC_EXCHANGE_2 -# define MAYBE_HAVE_ATOMIC_EXCHANGE_2 MAYBE_HAVE_ATOMIC_CAS_2 -# undef MAYBE_HAVE_ATOMIC_LDST_2 -# define MAYBE_HAVE_ATOMIC_LDST_2 MAYBE_HAVE_ATOMIC_CAS_2 -# undef MAYBE_HAVE_ATOMIC_CAS_4 -# define MAYBE_HAVE_ATOMIC_CAS_4 IFUNC_COND_1 -# undef MAYBE_HAVE_ATOMIC_EXCHANGE_4 -# define MAYBE_HAVE_ATOMIC_EXCHANGE_4 MAYBE_HAVE_ATOMIC_CAS_4 -# undef MAYBE_HAVE_ATOMIC_LDST_4 -# define MAYBE_HAVE_ATOMIC_LDST_4 MAYBE_HAVE_ATOMIC_CAS_4 -# undef MAYBE_HAVE_ATOMIC_CAS_8 -# define MAYBE_HAVE_ATOMIC_CAS_8 (IFUNC_COND_1 | IFUNC_COND_2) -# undef MAYBE_HAVE_ATOMIC_EXCHANGE_8 -# define MAYBE_HAVE_ATOMIC_EXCHANGE_8 MAYBE_HAVE_ATOMIC_CAS_8 -# undef MAYBE_HAVE_ATOMIC_LDST_8 -# define MAYBE_HAVE_ATOMIC_LDST_8 MAYBE_HAVE_ATOMIC_CAS_8 - -# define IFUNC_NCOND(N) (N == 8 ? 2 : 1) - -#endif /* HAVE_IFUNC */ - -#include_next <host-config.h> |