From: Mao Han <han_mao@c-sky.com>
To: libc-alpha@sourceware.org
Cc: Mao Han <han_mao@c-sky.com>,
c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com
Subject: [RFC PATCH v3 05/12] C-SKY: Atomic and Locking Routines
Date: Fri, 29 Jun 2018 07:59:00 -0000 [thread overview]
Message-ID: <52862eb735de64be1bd5a61b21ef9585e665558d.1530246556.git.han_mao@c-sky.com> (raw)
In-Reply-To: <cover.1530246556.git.han_mao@c-sky.com>
In-Reply-To: <cover.1530246556.git.han_mao@c-sky.com>
This patch implements various atomic and locking routines on C-SKY.
* sysdeps/csky/atomic-machine.h: New file.
* sysdeps/csky/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/csky/nptl/bits/semaphore.h: Likewise.
---
sysdeps/csky/atomic-machine.h | 97 ++++++++++++++++++++++++++++++
sysdeps/csky/nptl/bits/pthreadtypes-arch.h | 70 +++++++++++++++++++++
sysdeps/csky/nptl/bits/semaphore.h | 35 +++++++++++
3 files changed, 202 insertions(+)
create mode 100644 sysdeps/csky/atomic-machine.h
create mode 100644 sysdeps/csky/nptl/bits/pthreadtypes-arch.h
create mode 100644 sysdeps/csky/nptl/bits/semaphore.h
diff --git a/sysdeps/csky/atomic-machine.h b/sysdeps/csky/atomic-machine.h
new file mode 100644
index 0000000..b64674f
--- /dev/null
+++ b/sysdeps/csky/atomic-machine.h
@@ -0,0 +1,97 @@
+/* Atomic operations. C-SKY version.
+ Copyright (C) 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 __CSKY_ATOMIC_H_
+#define __CSKY_ATOMIC_H_
+
+#include <stdint.h>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_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 0
+#define ATOMIC_EXCHANGE_USES_CAS 0
+
+#define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval) \
+ ({ __typeof (mem) _mem = (mem); \
+ __typeof (oldval) _oldval = oldval; \
+ __typeof (newval) _newval = newval; \
+ register int _a0 asm ("a0") = (int)_oldval; \
+ register int _a1 asm ("a1") = (int)_newval; \
+ register int _a2 asm ("a2") = (int)_mem; \
+ __asm__ __volatile__ ("trap 2" \
+ : "+r" (_a0) : "r" (_a1) , "r" (_a2) \
+ : "a3", "memory"); \
+ (int) _a0; })
+
+#define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_val_8_int(mem, newval, oldval) \
+ (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_val_16_int(mem, newval, oldval) \
+ (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_val_32_int(mem, newval, oldval) \
+ ({ __typeof (mem) _mem = (mem); \
+ __typeof (*mem) __gret = *_mem; \
+ unsigned int _tmp = 0; \
+ __typeof (oldval) _oldval = oldval; \
+ __typeof (newval) _newval = newval; \
+ register int _a0 asm ("a0") = (int)_oldval; \
+ register int _a1 asm ("a1") = (int)_newval; \
+ register int _a2 asm ("a2") = (int)_mem; \
+ __asm__ __volatile__ ("1:\tldw %1, (%4, 0x0)\n\t" \
+ "cmpne %1, %0\n\t" \
+ "bt 2f\n\t" \
+ "mov %2, %0\n\t" \
+ "trap 2\n\t" \
+ "cmpnei %0, 0\n\t" \
+ "mov %0, %2\n\t" \
+ "bt 1b\n" \
+ "2:" \
+ : "+r" (_a0), "+r"(__gret), "+r" (_tmp) \
+ : "r" (_a1) , "r" (_a2) \
+ : "a3", "memory"); \
+ __gret; })
+
+#define __arch_compare_and_exchange_val_64_int(mem, newval, oldval) \
+ (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)
+
+#define atomic_compare_and_exchange_val_acq(mem, new, old) \
+ __atomic_val_bysize (__arch_compare_and_exchange_val, int, \
+ mem, new, old)
+
+#endif /* atomic-machine.h */
diff --git a/sysdeps/csky/nptl/bits/pthreadtypes-arch.h b/sysdeps/csky/nptl/bits/pthreadtypes-arch.h
new file mode 100644
index 0000000..d3423fb
--- /dev/null
+++ b/sysdeps/csky/nptl/bits/pthreadtypes-arch.h
@@ -0,0 +1,70 @@
+/* Machine-specific pthread type layouts. C-SKY version.
+ Copyright (C) 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_ARCH_H
+#define _BITS_PTHREADTYPES_ARCH_H 1
+
+#include <endian.h>
+
+#define __SIZEOF_PTHREAD_ATTR_T 36
+#define __SIZEOF_PTHREAD_MUTEX_T 24
+#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
+
+/* Data structure for mutex handling. */
+#define __PTHREAD_COMPAT_PADDING_MID
+#define __PTHREAD_COMPAT_PADDING_END
+#define __PTHREAD_MUTEX_LOCK_ELISION 0
+#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND 1
+#define __PTHREAD_MUTEX_USE_UNION 1
+
+#define __LOCK_ALIGNMENT
+#define __ONCE_ALIGNMENT
+
+/* Paddings in this structure are not strictly necessary on C-SKY.
+ They are left for extensibility as most other architecture do so. */
+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
diff --git a/sysdeps/csky/nptl/bits/semaphore.h b/sysdeps/csky/nptl/bits/semaphore.h
new file mode 100644
index 0000000..0b13f59
--- /dev/null
+++ b/sysdeps/csky/nptl/bits/semaphore.h
@@ -0,0 +1,35 @@
+/* Machine-specific POSIX semaphore type layouts. C-SKY version.
+ Copyright (C) 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;
--
2.7.4
next prev parent reply other threads:[~2018-06-29 7:59 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-29 7:59 [RFC PATCH v3 00/12] port C-SKY to glibc Mao Han
2018-06-29 7:59 ` [RFC PATCH v3 01/12] C-SKY: ABI related code Mao Han
2018-06-29 16:40 ` Joseph Myers
2018-07-03 8:04 ` Mao Han
2018-06-29 7:59 ` Mao Han [this message]
2018-06-29 16:36 ` [RFC PATCH v3 05/12] C-SKY: Atomic and Locking Routines Joseph Myers
2018-07-03 7:57 ` Mao Han
2018-07-17 20:03 ` Joseph Myers
2018-06-29 7:59 ` [RFC PATCH v3 02/12] C-SKY: TLS support Mao Han
2018-06-29 7:59 ` [RFC PATCH v3 04/12] C-SKY: Hard Float Support Mao Han
2018-06-29 8:00 ` [RFC PATCH v3 11/12] C-SKY: Add build-many-glibcs.py support Mao Han
2018-06-29 16:44 ` Joseph Myers
2018-06-29 8:01 ` [RFC PATCH v3 12/12] C-SKY: Skeleton documentation Mao Han
2018-06-29 8:01 ` [RFC PATCH v3 10/12] C-SKY: Build Infastructure Mao Han
2018-06-29 16:46 ` Joseph Myers
2018-06-29 8:01 ` [RFC PATCH v3 09/12] C-SKY: Linux Startup and Dynamic Loading Code Mao Han
2018-06-29 8:12 ` [RFC PATCH v3 07/12] C-SKY: Linux ABI Mao Han
2018-06-29 16:54 ` Joseph Myers
2018-07-03 8:01 ` Mao Han
2018-06-29 8:12 ` [RFC PATCH v3 03/12] C-SKY: Generic math Routines Mao Han
2018-06-29 8:12 ` [RFC PATCH v3 06/12] C-SKY: Linux Syscall Interface Mao Han
2018-06-29 8:12 ` [RFC PATCH v3 08/12] C-SKY: ABI Lists Mao Han
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