| This is https://github.com/loongarch64/userspace-rcu/pull/2, yet to be |
| upstreamed but already reviewed and accepted by the LoongArch porting |
| community. |
| From 213197eea1a711da2f7cc0c04cdf33acb1b3c50e Mon Sep 17 00:00:00 2001 |
| From: Wang Jing <wangjing@loongson.cn> |
| Date: Tue, 8 Jun 2021 19:44:49 +0800 |
| Subject: [PATCH] Add LoongArch support |
| |
| --- a/LICENSE |
| +++ b/LICENSE |
| @@ -44,6 +44,7 @@ MIT/X11 (BSD like) license apply to: |
| compiler.h |
| arch/s390.h |
| uatomic/alpha.h |
| +uatomic/loongarch.h |
| uatomic/mips.h |
| uatomic/nios2.h |
| uatomic/s390.h |
| --- a/README.md |
| +++ b/README.md |
| @@ -51,6 +51,7 @@ Currently, the following architectures are supported: |
| - hppa/PA-RISC |
| - m68k |
| - RISC-V |
| + - LoongArch |
| |
| Tested on: |
| |
| --- a/include/Makefile.am |
| +++ b/include/Makefile.am |
| @@ -7,6 +7,7 @@ nobase_include_HEADERS = \ |
| urcu/arch.h \ |
| urcu/arch/hppa.h \ |
| urcu/arch/ia64.h \ |
| + urcu/arch/loongarch.h \ |
| urcu/arch/m68k.h \ |
| urcu/arch/mips.h \ |
| urcu/arch/nios2.h \ |
| @@ -67,6 +68,7 @@ nobase_include_HEADERS = \ |
| urcu/uatomic.h \ |
| urcu/uatomic/hppa.h \ |
| urcu/uatomic/ia64.h \ |
| + urcu/uatomic/loongarch.h \ |
| urcu/uatomic/m68k.h \ |
| urcu/uatomic/mips.h \ |
| urcu/uatomic/nios2.h \ |
| --- a/include/urcu/arch.h |
| +++ b/include/urcu/arch.h |
| @@ -49,6 +49,7 @@ |
| * URCU_ARCH_HPPA : All HP PA-RISC variants |
| * URCU_ARCH_M68K : All Motorola 68000 variants |
| * URCU_ARCH_RISCV : All RISC-V variants |
| + * URCU_ARCH_LOONGARCH : All LoongArch variants |
| */ |
| |
| #if (defined(__INTEL_OFFLOAD) || defined(__TARGET_ARCH_MIC) || defined(__MIC__)) |
| @@ -157,6 +158,11 @@ |
| #define URCU_ARCH_RISCV 1 |
| #include <urcu/arch/riscv.h> |
| |
| +#elif defined(__loongarch__) |
| + |
| +#define URCU_ARCH_LOONGARCH 1 |
| +#include <urcu/arch/loongarch.h> |
| + |
| #else |
| #error "Cannot build: unrecognized architecture, see <urcu/arch.h>." |
| #endif |
| --- /dev/null |
| +++ b/include/urcu/arch/loongarch.h |
| @@ -0,0 +1,49 @@ |
| +#ifndef _URCU_ARCH_LOONGARCH_H |
| +#define _URCU_ARCH_LOONGARCH_H |
| + |
| +/* |
| + * arch/loongarch.h: trivial definitions for the LoongArch architecture. |
| + * |
| + * Copyright (c) 2021 Wang Jing <wangjing@loongson.cn> |
| + * |
| + * This 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. |
| + * |
| + * This 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 this library; if not, write to the Free Software |
| + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| + */ |
| + |
| +#include <urcu/compiler.h> |
| +#include <urcu/config.h> |
| +#include <urcu/syscall-compat.h> |
| + |
| +#ifdef __cplusplus |
| +extern "C" { |
| +#endif |
| + |
| +#include <stdlib.h> |
| +#include <sys/time.h> |
| + |
| +/* |
| + * On Linux, define the membarrier system call number if not yet available in |
| + * the system headers. |
| + */ |
| +#if (defined(__linux__) && !defined(__NR_membarrier)) |
| +#define __NR_membarrier 283 |
| +#endif |
| + |
| +#ifdef __cplusplus |
| +} |
| +#endif |
| + |
| +#include <urcu/arch/generic.h> |
| + |
| +#endif /* _URCU_ARCH_LOONGARCH_H */ |
| --- a/include/urcu/uatomic.h |
| +++ b/include/urcu/uatomic.h |
| @@ -51,6 +51,8 @@ |
| #include <urcu/uatomic/m68k.h> |
| #elif defined(URCU_ARCH_RISCV) |
| #include <urcu/uatomic/riscv.h> |
| +#elif defined(URCU_ARCH_LOONGARCH) |
| +#include <urcu/uatomic/loongarch.h> |
| #else |
| #error "Cannot build: unrecognized architecture, see <urcu/arch.h>." |
| #endif |
| --- /dev/null |
| +++ b/include/urcu/uatomic/loongarch.h |
| @@ -0,0 +1,44 @@ |
| +#ifndef _URCU_UATOMIC_ARCH_LOONGARCH_H |
| +#define _URCU_UATOMIC_ARCH_LOONGARCH_H |
| + |
| +/* |
| + * Atomic exchange operations for the LoongArch architecture. Let GCC do it. |
| + * |
| + * Copyright (c) 2021 Wang Jing <wangjing@loongson.cn> |
| + * |
| + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| + * of this software and associated documentation files (the "Software"), to |
| + * deal in the Software without restriction, including without limitation the |
| + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| + * sell copies of the Software, and to permit persons to whom the Software is |
| + * furnished to do so, subject to the following conditions: |
| + * |
| + * The above copyright notice and this permission notice shall be included in |
| + * all copies or substantial portions of the Software. |
| + * |
| + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| + * IN THE SOFTWARE. |
| + */ |
| + |
| +#include <urcu/compiler.h> |
| +#include <urcu/system.h> |
| + |
| +#ifdef __cplusplus |
| +extern "C" { |
| +#endif |
| + |
| +#define UATOMIC_HAS_ATOMIC_BYTE |
| +#define UATOMIC_HAS_ATOMIC_SHORT |
| + |
| +#ifdef __cplusplus |
| +} |
| +#endif |
| + |
| +#include <urcu/uatomic/generic.h> |
| + |
| +#endif /* _URCU_UATOMIC_ARCH_LOONGARCH_H */ |