48efb384f8
It is always needed by the kernel, since the return codes are now errnos. CONFIG_ERRNO is the mechanism for having a per-thread errno, not using errno values. Change-Id: I4ed14896a342f4122793d91b13c41b4a6a74716d Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/** @file
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*
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* @brief Per-thread errno accessor function
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*
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* Allow accessing the errno for the current thread without involving the
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* context switching.
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*/
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#include <nano_private.h>
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#ifdef CONFIG_KERNEL_V2
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/*
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* Define _k_neg_eagain for use in assembly files as errno.h is
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* not assembly language safe.
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*/
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const int _k_neg_eagain = -EAGAIN;
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#endif
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#ifdef CONFIG_ERRNO
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int *_get_errno(void)
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{
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return &_nanokernel.current->errno_var;
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}
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#endif
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