39 lines
1.0 KiB
ArmAsm
39 lines
1.0 KiB
ArmAsm
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/*
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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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#define _ASMLANGUAGE
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#include <nano_private.h>
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#include <arch/x86/asm.h>
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#include <offsets.h>
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GTEXT(_nanokernel)
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GTEXT(_get_errno)
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SECTION_FUNC(TEXT, _get_errno)
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movl _nanokernel + __tNANO_current_OFFSET, %eax
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addl $__tTCS_errno_var_OFFSET, %eax
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ret
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