From patchwork Fri Jun 29 07:58:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?5q+b5pmX?= X-Patchwork-Id: 28122 Received: (qmail 57931 invoked by alias); 29 Jun 2018 07:59:51 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 57662 invoked by uid 89); 29 Jun 2018 07:59:48 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-24.4 required=5.0 tests=AWL, BAYES_00, FSL_HELO_NON_FQDN_1, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_LAZY_DOMAIN_SECURITY, KAM_SHORT autolearn=ham version=3.3.2 spammy=H*f:sk:cover.1, H*r:Unknown, H*i:sk:cover.1, sk:__atomi X-HELO: vmh-VirtualBox From: Mao Han To: libc-alpha@sourceware.org Cc: Mao Han , 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 15:58:50 +0800 Message-Id: <52862eb735de64be1bd5a61b21ef9585e665558d.1530246556.git.han_mao@c-sky.com> In-Reply-To: References: In-Reply-To: References: 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 + . */ + +#ifndef __CSKY_ATOMIC_H_ +#define __CSKY_ATOMIC_H_ + +#include + +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 + . */ + +#ifndef _BITS_PTHREADTYPES_ARCH_H +#define _BITS_PTHREADTYPES_ARCH_H 1 + +#include + +#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 + . */ + +#ifndef _SEMAPHORE_H +# error "Never use directly; include 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;