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48 lines
959 B
48 lines
959 B
/* |
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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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