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https://github.com/zephyrproject-rtos/zephyr
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68b3b6135e
We really should have more faith in the compiler, it generates code to implement this exactly like the arch-specific assembly versions, and on ARM is actually 4 bytes shorter. FUNC_NO_FP used to disable the usual C preamble to update the frame/stack pointers, which is how the sizes are still the same or less. It's debatable how useful the occasional use of FUNC_NO_FP is in practice since it hinders debugging and in a production build frame pointers should be globally disabled, but we can address that later. Change-Id: I6c4b64ab3e3a9b6f91d52fa8c92e6e79a986fc77 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
31 lines
880 B
C
31 lines
880 B
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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FUNC_NO_FP 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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