mirror of
https://github.com/gentoo-mirror/gentoo.git
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182 lines
5.2 KiB
Diff
182 lines
5.2 KiB
Diff
This is https://github.com/loongarch64/userspace-rcu/pull/2, yet to be
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upstreamed but already reviewed and accepted by the LoongArch porting
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community.
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(and https://github.com/urcu/userspace-rcu/pull/11)
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From 213197eea1a711da2f7cc0c04cdf33acb1b3c50e Mon Sep 17 00:00:00 2001
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From: Wang Jing <wangjing@loongson.cn>
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Date: Tue, 8 Jun 2021 19:44:49 +0800
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Subject: [PATCH] Add LoongArch support
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--- a/LICENSE
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+++ b/LICENSE
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@@ -44,6 +44,7 @@ MIT/X11 (BSD like) license apply to:
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compiler.h
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arch/s390.h
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uatomic/alpha.h
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+uatomic/loongarch.h
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uatomic/mips.h
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uatomic/nios2.h
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uatomic/s390.h
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--- a/README.md
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+++ b/README.md
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@@ -51,6 +51,7 @@ Currently, the following architectures are supported:
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- hppa/PA-RISC
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- m68k
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- RISC-V
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+ - LoongArch
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Tested on:
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--- a/include/Makefile.am
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+++ b/include/Makefile.am
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@@ -7,6 +7,7 @@ nobase_include_HEADERS = \
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urcu/arch.h \
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urcu/arch/hppa.h \
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urcu/arch/ia64.h \
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+ urcu/arch/loongarch.h \
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urcu/arch/m68k.h \
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urcu/arch/mips.h \
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urcu/arch/nios2.h \
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@@ -67,6 +68,7 @@ nobase_include_HEADERS = \
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urcu/uatomic.h \
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urcu/uatomic/hppa.h \
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urcu/uatomic/ia64.h \
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+ urcu/uatomic/loongarch.h \
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urcu/uatomic/m68k.h \
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urcu/uatomic/mips.h \
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urcu/uatomic/nios2.h \
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--- a/include/urcu/arch.h
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+++ b/include/urcu/arch.h
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@@ -49,6 +49,7 @@
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* URCU_ARCH_HPPA : All HP PA-RISC variants
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* URCU_ARCH_M68K : All Motorola 68000 variants
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* URCU_ARCH_RISCV : All RISC-V variants
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+ * URCU_ARCH_LOONGARCH : All LoongArch variants
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*/
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#if (defined(__INTEL_OFFLOAD) || defined(__TARGET_ARCH_MIC) || defined(__MIC__))
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@@ -157,6 +158,11 @@
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#define URCU_ARCH_RISCV 1
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#include <urcu/arch/riscv.h>
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+#elif defined(__loongarch__)
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+
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+#define URCU_ARCH_LOONGARCH 1
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+#include <urcu/arch/loongarch.h>
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+
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#else
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#error "Cannot build: unrecognized architecture, see <urcu/arch.h>."
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#endif
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--- /dev/null
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+++ b/include/urcu/arch/loongarch.h
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@@ -0,0 +1,49 @@
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+#ifndef _URCU_ARCH_LOONGARCH_H
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+#define _URCU_ARCH_LOONGARCH_H
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+
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+/*
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+ * arch/loongarch.h: trivial definitions for the LoongArch architecture.
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+ *
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+ * Copyright (c) 2021 Wang Jing <wangjing@loongson.cn>
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+ *
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+ * This library is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU Lesser General Public
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+ * License as published by the Free Software Foundation; either
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+ * version 2.1 of the License, or (at your option) any later version.
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+ *
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+ * This library is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public
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+ * License along with this library; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+#include <urcu/compiler.h>
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+#include <urcu/config.h>
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+#include <urcu/syscall-compat.h>
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+#include <stdlib.h>
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+#include <sys/time.h>
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+
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+/*
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+ * On Linux, define the membarrier system call number if not yet available in
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+ * the system headers.
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+ */
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+#if (defined(__linux__) && !defined(__NR_membarrier))
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+#define __NR_membarrier 283
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+#endif
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+#include <urcu/arch/generic.h>
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+
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+#endif /* _URCU_ARCH_LOONGARCH_H */
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--- a/include/urcu/uatomic.h
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+++ b/include/urcu/uatomic.h
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@@ -51,6 +51,8 @@
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#include <urcu/uatomic/m68k.h>
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#elif defined(URCU_ARCH_RISCV)
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#include <urcu/uatomic/riscv.h>
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+#elif defined(URCU_ARCH_LOONGARCH)
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+#include <urcu/uatomic/loongarch.h>
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#else
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#error "Cannot build: unrecognized architecture, see <urcu/arch.h>."
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#endif
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--- /dev/null
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+++ b/include/urcu/uatomic/loongarch.h
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@@ -0,0 +1,44 @@
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+#ifndef _URCU_UATOMIC_ARCH_LOONGARCH_H
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+#define _URCU_UATOMIC_ARCH_LOONGARCH_H
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+
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+/*
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+ * Atomic exchange operations for the LoongArch architecture. Let GCC do it.
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+ *
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+ * Copyright (c) 2021 Wang Jing <wangjing@loongson.cn>
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to
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+ * deal in the Software without restriction, including without limitation the
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+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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+ * sell copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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+ * IN THE SOFTWARE.
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+ */
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+
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+#include <urcu/compiler.h>
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+#include <urcu/system.h>
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+#define UATOMIC_HAS_ATOMIC_BYTE
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+#define UATOMIC_HAS_ATOMIC_SHORT
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+#include <urcu/uatomic/generic.h>
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+
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+#endif /* _URCU_UATOMIC_ARCH_LOONGARCH_H */
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