[v7,06/13] LoongArch: Atomic and Locking Routines
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---
.../sysv/linux/loongarch/atomic-machine.h | 147 ++++++++++++++++++
1 file changed, 147 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/loongarch/atomic-machine.h
Comments
LGTM. We really need to remove this old atomic wrappers / implementations...
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
On 18/07/22 22:20, caiyinyu wrote:
> ---
> .../sysv/linux/loongarch/atomic-machine.h | 147 ++++++++++++++++++
> 1 file changed, 147 insertions(+)
> create mode 100644 sysdeps/unix/sysv/linux/loongarch/atomic-machine.h
>
> diff --git a/sysdeps/unix/sysv/linux/loongarch/atomic-machine.h b/sysdeps/unix/sysv/linux/loongarch/atomic-machine.h
> new file mode 100644
> index 0000000000..d1b8f1c11b
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/loongarch/atomic-machine.h
> @@ -0,0 +1,147 @@
> +/* Atomic operations.
> + 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 _LINUX_LOONGARCH_BITS_ATOMIC_H
> +#define _LINUX_LOONGARCH_BITS_ATOMIC_H 1
> +
> +#define atomic_full_barrier() __sync_synchronize ()
> +
> +#define __HAVE_64B_ATOMICS (__loongarch_grlen >= 64)
> +#define USE_ATOMIC_COMPILER_BUILTINS 1
> +#define ATOMIC_EXCHANGE_USES_CAS 0
> +
> +/* Compare and exchange.
> + For all "bool" routines, we return FALSE if exchange succesful. */
> +
> +#define __arch_compare_and_exchange_bool_8_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_16_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_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) \
> + ({ \
> + typeof (*mem) __oldval = (oldval); \
> + !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, model, \
> + __ATOMIC_RELAXED); \
> + })
> +
> +#define __arch_compare_and_exchange_val_8_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_16_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_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) \
> + ({ \
> + typeof (*mem) __oldval = (oldval); \
> + __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, model, \
> + __ATOMIC_RELAXED); \
> + __oldval; \
> + })
> +
> +/* Atomic compare and exchange. */
> +
> +#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_compare_and_exchange_val_rel(mem, new, old) \
> + __atomic_val_bysize (__arch_compare_and_exchange_val, int, mem, new, old, \
> + __ATOMIC_RELEASE)
> +
> +/* Atomic exchange (without compare). */
> +
> +#define __arch_exchange_8_int(mem, newval, model) \
> + __atomic_exchange_n (mem, newval, model)
> +
> +#define __arch_exchange_16_int(mem, newval, model) \
> + __atomic_exchange_n (mem, newval, model)
> +
> +#define __arch_exchange_32_int(mem, newval, model) \
> + __atomic_exchange_n (mem, newval, model)
> +
> +#define __arch_exchange_64_int(mem, newval, model) \
> + __atomic_exchange_n (mem, newval, model)
> +
> +#define atomic_exchange_acq(mem, value) \
> + __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_ACQUIRE)
> +
> +#define atomic_exchange_rel(mem, value) \
> + __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_RELEASE)
> +
> +/* Atomically add value and return the previous (unincremented) value. */
> +
> +#define __arch_exchange_and_add_8_int(mem, value, model) \
> + __atomic_fetch_add (mem, value, model)
> +
> +#define __arch_exchange_and_add_16_int(mem, value, model) \
> + __atomic_fetch_add (mem, value, model)
> +
> +#define __arch_exchange_and_add_32_int(mem, value, model) \
> + __atomic_fetch_add (mem, value, model)
> +
> +#define __arch_exchange_and_add_64_int(mem, value, model) \
> + __atomic_fetch_add (mem, value, model)
> +
> +#define atomic_exchange_and_add_acq(mem, value) \
> + __atomic_val_bysize (__arch_exchange_and_add, int, mem, value, \
> + __ATOMIC_ACQUIRE)
> +
> +#define atomic_exchange_and_add_rel(mem, value) \
> + __atomic_val_bysize (__arch_exchange_and_add, int, mem, value, \
> + __ATOMIC_RELEASE)
> +
> +#endif /* bits/atomic.h */
new file mode 100644
@@ -0,0 +1,147 @@
+/* Atomic operations.
+ 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 _LINUX_LOONGARCH_BITS_ATOMIC_H
+#define _LINUX_LOONGARCH_BITS_ATOMIC_H 1
+
+#define atomic_full_barrier() __sync_synchronize ()
+
+#define __HAVE_64B_ATOMICS (__loongarch_grlen >= 64)
+#define USE_ATOMIC_COMPILER_BUILTINS 1
+#define ATOMIC_EXCHANGE_USES_CAS 0
+
+/* Compare and exchange.
+ For all "bool" routines, we return FALSE if exchange succesful. */
+
+#define __arch_compare_and_exchange_bool_8_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_16_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_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) \
+ ({ \
+ typeof (*mem) __oldval = (oldval); \
+ !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, model, \
+ __ATOMIC_RELAXED); \
+ })
+
+#define __arch_compare_and_exchange_val_8_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_16_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_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) \
+ ({ \
+ typeof (*mem) __oldval = (oldval); \
+ __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, model, \
+ __ATOMIC_RELAXED); \
+ __oldval; \
+ })
+
+/* Atomic compare and exchange. */
+
+#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_compare_and_exchange_val_rel(mem, new, old) \
+ __atomic_val_bysize (__arch_compare_and_exchange_val, int, mem, new, old, \
+ __ATOMIC_RELEASE)
+
+/* Atomic exchange (without compare). */
+
+#define __arch_exchange_8_int(mem, newval, model) \
+ __atomic_exchange_n (mem, newval, model)
+
+#define __arch_exchange_16_int(mem, newval, model) \
+ __atomic_exchange_n (mem, newval, model)
+
+#define __arch_exchange_32_int(mem, newval, model) \
+ __atomic_exchange_n (mem, newval, model)
+
+#define __arch_exchange_64_int(mem, newval, model) \
+ __atomic_exchange_n (mem, newval, model)
+
+#define atomic_exchange_acq(mem, value) \
+ __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_ACQUIRE)
+
+#define atomic_exchange_rel(mem, value) \
+ __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_RELEASE)
+
+/* Atomically add value and return the previous (unincremented) value. */
+
+#define __arch_exchange_and_add_8_int(mem, value, model) \
+ __atomic_fetch_add (mem, value, model)
+
+#define __arch_exchange_and_add_16_int(mem, value, model) \
+ __atomic_fetch_add (mem, value, model)
+
+#define __arch_exchange_and_add_32_int(mem, value, model) \
+ __atomic_fetch_add (mem, value, model)
+
+#define __arch_exchange_and_add_64_int(mem, value, model) \
+ __atomic_fetch_add (mem, value, model)
+
+#define atomic_exchange_and_add_acq(mem, value) \
+ __atomic_val_bysize (__arch_exchange_and_add, int, mem, value, \
+ __ATOMIC_ACQUIRE)
+
+#define atomic_exchange_and_add_rel(mem, value) \
+ __atomic_val_bysize (__arch_exchange_and_add, int, mem, value, \
+ __ATOMIC_RELEASE)
+
+#endif /* bits/atomic.h */