49 lines
959 B
C
49 lines
959 B
C
/*
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* Copyright (c) 2018 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_
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#define ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_
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#include <toolchain.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* NOTE: located here to avoid include dependency loops between errno.h
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* and kernel.h
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*/
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#ifdef CONFIG_ERRNO_IN_TLS
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extern __thread int z_errno_var;
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static inline int *z_errno(void)
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{
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return &z_errno_var;
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}
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#else
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/**
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* return a pointer to a memory location containing errno
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*
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* errno is thread-specific, and can't just be a global. This pointer
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* is guaranteed to be read/writable from user mode.
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*
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* @return Memory location of errno data for current thread
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*/
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__syscall int *z_errno(void);
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#endif /* CONFIG_ERRNO_IN_TLS */
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#ifdef __cplusplus
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}
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#endif
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#ifndef CONFIG_ERRNO_IN_TLS
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#include <syscalls/errno_private.h>
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#endif /* CONFIG_ERRNO_IN_TLS */
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#endif /* ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_ */
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