| From add566b913e1b5cd4974a2167157dc08d8245ab0 Mon Sep 17 00:00:00 2001 |
| From: Marek Vasut <marex@denx.de> |
| Date: Tue, 9 Feb 2016 01:52:26 +0100 |
| Subject: [PATCH] Support for NIOS2 architecture |
| |
| Add support for the Altera NIOS2 CPU archirecture. The atomic operations |
| are handled by the GCC. The memory barriers on this systems are entirely |
| trivial too, since the CPU does not support SMP at all. |
| |
| Signed-off-by: Marek Vasut <marex@denx.de> |
| Upstream-Status: Backport [ http://git.lttng.org/?p=userspace-rcu.git;a=commit;h=859050b3088aa3f0cb59d7f51ce24b9a0f18faa5 ] |
| --- |
| LICENSE | 1 + |
| README.md | 1 + |
| configure.ac | 1 + |
| urcu/arch/nios2.h | 40 ++++++++++++++++++++++++++++++++++++++++ |
| urcu/uatomic/nios2.h | 32 ++++++++++++++++++++++++++++++++ |
| 5 files changed, 75 insertions(+) |
| create mode 100644 urcu/arch/nios2.h |
| create mode 100644 urcu/uatomic/nios2.h |
| |
| diff --git a/LICENSE b/LICENSE |
| index 3147094..a06fdcc 100644 |
| --- a/LICENSE |
| +++ b/LICENSE |
| @@ -45,6 +45,7 @@ compiler.h |
| arch/s390.h |
| uatomic/alpha.h |
| uatomic/mips.h |
| +uatomic/nios2.h |
| uatomic/s390.h |
| system.h |
| |
| diff --git a/README.md b/README.md |
| index f6b290f..6fe9c1e 100644 |
| --- a/README.md |
| +++ b/README.md |
| @@ -43,6 +43,7 @@ Currently, the following architectures are supported: |
| - S390, S390x |
| - ARM 32/64 |
| - MIPS |
| + - NIOS2 |
| - Alpha |
| - ia64 |
| - Sparcv9 32/64 |
| diff --git a/configure.ac b/configure.ac |
| index 39a7777..71a7d71 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -124,6 +124,7 @@ AS_CASE([$host_cpu], |
| [arm*], [ARCHTYPE="arm"], |
| [aarch64], [ARCHTYPE="aarch64"], |
| [mips*], [ARCHTYPE="mips"], |
| + [nios2*], [ARCHTYPE="nios2"], |
| [tile*], [ARCHTYPE="tile"], |
| [hppa*], [ARCHTYPE="hppa"], |
| [ARCHTYPE="unknown"] |
| diff --git a/urcu/arch/nios2.h b/urcu/arch/nios2.h |
| new file mode 100644 |
| index 0000000..030d1bc |
| --- /dev/null |
| +++ b/urcu/arch/nios2.h |
| @@ -0,0 +1,40 @@ |
| +#ifndef _URCU_ARCH_NIOS2_H |
| +#define _URCU_ARCH_NIOS2_H |
| + |
| +/* |
| + * arch_nios2.h: trivial definitions for the NIOS2 architecture. |
| + * |
| + * Copyright (c) 2016 Marek Vasut <marex@denx.de> |
| + * |
| + * 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 |
| + |
| +#define cmm_mb() cmm_barrier() |
| + |
| +#ifdef __cplusplus |
| +} |
| +#endif |
| + |
| +#include <urcu/arch/generic.h> |
| + |
| +#endif /* _URCU_ARCH_NIOS2_H */ |
| diff --git a/urcu/uatomic/nios2.h b/urcu/uatomic/nios2.h |
| new file mode 100644 |
| index 0000000..5b3c303 |
| --- /dev/null |
| +++ b/urcu/uatomic/nios2.h |
| @@ -0,0 +1,32 @@ |
| +#ifndef _URCU_UATOMIC_ARCH_NIOS2_H |
| +#define _URCU_UATOMIC_ARCH_NIOS2_H |
| + |
| +/* |
| + * Atomic exchange operations for the NIOS2 architecture. Let GCC do it. |
| + * |
| + * Copyright (c) 2016 Marek Vasut <marex@denx.de> |
| + * |
| + * 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> |
| +#include <urcu/uatomic/generic.h> |
| + |
| +#endif /* _URCU_UATOMIC_ARCH_NIOS2_H */ |
| -- |
| 2.7.0 |
| |