From: Stafford Horne <shorne@gmail.com>
To: GLIBC patches <libc-alpha@sourceware.org>
Cc: Openrisc <openrisc@lists.librecores.org>,
Stafford Horne <shorne@gmail.com>,
Adhemerval Zanella <adhemerval.zanella@linaro.org>
Subject: [PATCH v5 06/13] or1k: Atomics and Locking primitives
Date: Tue, 4 Jan 2022 12:14:07 +0900 [thread overview]
Message-ID: <20220104031414.2416928-7-shorne@gmail.com> (raw)
In-Reply-To: <20220104031414.2416928-1-shorne@gmail.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
sysdeps/or1k/atomic-machine.h | 71 +++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 sysdeps/or1k/atomic-machine.h
diff --git a/sysdeps/or1k/atomic-machine.h b/sysdeps/or1k/atomic-machine.h
new file mode 100644
index 0000000000..0d27298d70
--- /dev/null
+++ b/sysdeps/or1k/atomic-machine.h
@@ -0,0 +1,71 @@
+/* Atomic operations. OpenRISC version.
+ Copyright (C) 2022 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef __OR1K_ATOMIC_H_
+#define __OR1K_ATOMIC_H_
+
+#include <stdint.h>
+
+#define __HAVE_64B_ATOMICS 0
+#define USE_ATOMIC_COMPILER_BUILTINS 1
+#define ATOMIC_EXCHANGE_USES_CAS 1
+
+#define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \
+ ({ \
+ typeof (*mem) __oldval = (oldval); \
+ !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \
+ model, __ATOMIC_RELAXED); \
+ })
+
+#define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \
+ (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \
+ (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \
+ ({ \
+ typeof (*mem) __oldval = (oldval); \
+ __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \
+ model, __ATOMIC_RELAXED); \
+ __oldval; \
+ })
+
+#define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \
+ (abort (), (__typeof (*mem)) 0)
+
+#define atomic_compare_and_exchange_bool_acq(mem, new, old) \
+ __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \
+ mem, new, old, __ATOMIC_ACQUIRE)
+
+#define atomic_compare_and_exchange_val_acq(mem, new, old) \
+ __atomic_val_bysize (__arch_compare_and_exchange_val, int, \
+ mem, new, old, __ATOMIC_ACQUIRE)
+
+#define atomic_full_barrier() ({ asm volatile ("l.msync" ::: "memory"); })
+
+#endif /* atomic-machine.h */
--
2.31.1
next prev parent reply other threads:[~2022-01-04 3:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-04 3:14 [PATCH v5 00/13] Glibc OpenRISC port Stafford Horne
2022-01-04 3:14 ` [PATCH v5 01/13] elf: Add reloc for OpenRISC Stafford Horne
2022-01-04 3:14 ` [PATCH v5 02/13] linux/syscalls: Add or1k_atomic syscall " Stafford Horne
2022-01-04 3:14 ` [PATCH v5 03/13] or1k: ABI Implementation Stafford Horne
2022-01-04 3:14 ` [PATCH v5 04/13] or1k: startup and dynamic linking code Stafford Horne
2022-01-04 3:14 ` [PATCH v5 05/13] or1k: Thread Local Storage support Stafford Horne
2022-01-04 3:14 ` Stafford Horne [this message]
2022-01-04 3:14 ` [PATCH v5 07/13] or1k: math soft float support Stafford Horne
2022-01-04 3:14 ` [PATCH v5 08/13] or1k: Linux Syscall Interface Stafford Horne
2022-01-04 3:14 ` [PATCH v5 09/13] or1k: Linux ABI Stafford Horne
2022-01-04 3:14 ` [PATCH v5 10/13] or1k: ABI lists Stafford Horne
2022-01-04 12:27 ` Adhemerval Zanella
2022-01-04 21:37 ` Stafford Horne
2022-01-04 3:14 ` [PATCH v5 11/13] or1k: Build Infrastructure Stafford Horne
2022-01-04 3:14 ` [PATCH v5 12/13] build-many-glibcs.py: add OpenRISC support Stafford Horne
2022-01-04 3:14 ` [PATCH v5 13/13] Documentation for OpenRISC port Stafford Horne
2022-01-04 12:28 ` Adhemerval Zanella
2022-01-04 21:38 ` Stafford Horne
2022-01-04 12:34 ` [PATCH v5 00/13] Glibc " Adhemerval Zanella
2022-01-04 21:36 ` Stafford Horne
2022-01-05 21:34 ` [PATCH v5 00/13] Glibc OpenRISC port - PUSHED Stafford Horne
2022-01-24 13:23 ` [OpenRISC] [PATCH v5 00/13] Glibc OpenRISC port Florian Weimer
2022-01-24 13:54 ` Adhemerval Zanella
2022-01-25 1:19 ` Stafford Horne
2022-01-25 17:07 ` Adhemerval Zanella
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