[PATCH v3 06/13] nds32: Atomic and Locking Routines
Vincent Chen
vincentc@andestech.com
Thu Jun 14 07:24:00 GMT 2018
All atomic and locking routines on nds32 are implemented in this patch.
2018-05-30 Vincent Chen <vincentc@andestech.com>
* sysdeps/nds32/atomic-machine.h: New file.
* sysdeps/nds32/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nds32/nptl/bits/semaphore.h: Likewise.
* sysdeps/nds32/nptl/pthread-offsets.h: Likewise.
---
sysdeps/nds32/atomic-machine.h | 163 ++++++++++++++++++++++++++++
sysdeps/nds32/nptl/bits/pthreadtypes-arch.h | 71 ++++++++++++
sysdeps/nds32/nptl/bits/semaphore.h | 32 ++++++
sysdeps/nds32/nptl/pthread-offsets.h | 24 ++++
4 files changed, 290 insertions(+)
create mode 100644 sysdeps/nds32/atomic-machine.h
create mode 100644 sysdeps/nds32/nptl/bits/pthreadtypes-arch.h
create mode 100644 sysdeps/nds32/nptl/bits/semaphore.h
create mode 100644 sysdeps/nds32/nptl/pthread-offsets.h
diff --git a/sysdeps/nds32/atomic-machine.h b/sysdeps/nds32/atomic-machine.h
new file mode 100644
index 0000000..96dea76
--- /dev/null
+++ b/sysdeps/nds32/atomic-machine.h
@@ -0,0 +1,163 @@
+/* Atomic machine setting for Andes nds32.
+ Copyright (C) 2003-2018 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/>. */
+
+#ifndef _NDS32_ATOMIC_MACHINE_H
+#define _NDS32_ATOMIC_MACHINE_H 1
+
+#include <stdint.h>
+
+typedef int8_t atomic8_t;
+typedef int16_t atomic16_t;
+typedef int32_t atomic32_t;
+typedef int64_t atomic64_t;
+
+typedef uint8_t uatomic8_t;
+typedef uint16_t uatomic16_t;
+typedef uint32_t uatomic32_t;
+typedef uint64_t uatomic64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+#define __HAVE_64B_ATOMICS 0
+#define USE_ATOMIC_COMPILER_BUILTINS 1
+#define ATOMIC_EXCHANGE_USES_CAS 0
+
+void __nds32_link_error (void);
+
+#ifndef atomic_full_barrier
+# define atomic_full_barrier() __asm ("dsb" ::: "memory")
+#endif
+
+/* 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) \
+ (__nds32_link_error (), (typeof (*mem)) 0)
+
+#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)
+
+
+/* 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); \
+ (int)!__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); \
+ (int)!__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); \
+ (int)!__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \
+ model, __ATOMIC_RELAXED); \
+ })
+
+#define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \
+ ({__nds32_link_error (); (int) 0;})
+
+#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) \
+ ({__nds32_link_error (); (typeof (*mem)) 0;})
+
+
+/* Compare and exchange with "acquire" semantics, ie barrier after. */
+
+#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)
+
+/* Compare and exchange with "release" semantics, ie barrier before. */
+
+#define atomic_compare_and_exchange_val_rel(mem, new, old) \
+ __atomic_val_bysize (__arch_compare_and_exchange_val, int, \
+ mem, new, old, __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) \
+ (__nds32_link_error (), (typeof (*mem)) 0)
+
+#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 /* nds32/atomic-machine.h */
diff --git a/sysdeps/nds32/nptl/bits/pthreadtypes-arch.h b/sysdeps/nds32/nptl/bits/pthreadtypes-arch.h
new file mode 100644
index 0000000..27b6fae
--- /dev/null
+++ b/sysdeps/nds32/nptl/bits/pthreadtypes-arch.h
@@ -0,0 +1,71 @@
+/* Machine-specific pthread type layouts, Andes nds32 version.
+ Copyright (C) 2012-2018 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/>. */
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H 1
+
+#include <endian.h>
+
+#define __SIZEOF_PTHREAD_ATTR_T 32
+#define __SIZEOF_PTHREAD_MUTEX_T 32
+#define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+#define __SIZEOF_PTHREAD_COND_T 48
+#define __SIZEOF_PTHREAD_CONDATTR_T 4
+#define __SIZEOF_PTHREAD_RWLOCK_T 32
+#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+#define __SIZEOF_PTHREAD_BARRIER_T 20
+#define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+
+
+
+#define __PTHREAD_COMPAT_PADDING_MID
+#define __PTHREAD_COMPAT_PADDING_END
+#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND 0
+#define __PTHREAD_MUTEX_USE_UNION 0
+#define __PTHREAD_MUTEX_LOCK_ELISION 0
+
+
+#define __LOCK_ALIGNMENT
+#define __ONCE_ALIGNMENT
+
+struct __pthread_rwlock_arch_t
+{
+ unsigned int __readers;
+ unsigned int __writers;
+ unsigned int __wrphase_futex;
+ unsigned int __writers_futex;
+ unsigned int __pad3;
+ unsigned int __pad4;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ unsigned char __pad1;
+ unsigned char __pad2;
+ unsigned char __shared;
+ unsigned char __flags;
+#else
+ unsigned char __flags;
+ unsigned char __shared;
+ unsigned char __pad1;
+ unsigned char __pad2;
+#endif
+ int __cur_writer;
+};
+
+#define __PTHREAD_RWLOCK_ELISION_EXTRA 0
+
+
+#endif /* bits/pthreadtypes.h */
diff --git a/sysdeps/nds32/nptl/bits/semaphore.h b/sysdeps/nds32/nptl/bits/semaphore.h
new file mode 100644
index 0000000..fe6c4a4
--- /dev/null
+++ b/sysdeps/nds32/nptl/bits/semaphore.h
@@ -0,0 +1,32 @@
+/* Machine-specific POSIX semaphore type layouts, Andes nds32 version.
+ Copyright (C) 2002-2018 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/>. */
+
+#ifndef _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+#define __SIZEOF_SEM_T 16
+
+/* Value returned if `sem_open' failed. */
+#define SEM_FAILED ((sem_t *) 0)
+
+typedef union
+{
+ char __size[__SIZEOF_SEM_T];
+ long int __align;
+} sem_t;
diff --git a/sysdeps/nds32/nptl/pthread-offsets.h b/sysdeps/nds32/nptl/pthread-offsets.h
new file mode 100644
index 0000000..5558c75
--- /dev/null
+++ b/sysdeps/nds32/nptl/pthread-offsets.h
@@ -0,0 +1,24 @@
+/* pthread offsets for Andes nds32.
+ Copyright (C) 2017-2018 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 __PTHREAD_MUTEX_NUSERS_OFFSET 12
+#define __PTHREAD_MUTEX_KIND_OFFSET 16
+#define __PTHREAD_MUTEX_SPINS_OFFSET 20
+#define __PTHREAD_MUTEX_ELISION_OFFSET 22
+#define __PTHREAD_MUTEX_LIST_OFFSET 24
--
2.7.4
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