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38 lines
940 B
38 lines
940 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Based on arm/arm64/include/asm/current.h |
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* |
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* Copyright (C) 2016 ARM |
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* Copyright (C) 2017 SiFive |
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*/ |
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#ifndef _ASM_RISCV_CURRENT_H |
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#define _ASM_RISCV_CURRENT_H |
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#include <linux/bug.h> |
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#include <linux/compiler.h> |
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#ifndef __ASSEMBLY__ |
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struct task_struct; |
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register struct task_struct *riscv_current_is_tp __asm__("tp"); |
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/* |
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* This only works because "struct thread_info" is at offset 0 from "struct |
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* task_struct". This constraint seems to be necessary on other architectures |
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* as well, but __switch_to enforces it. We can't check TASK_TI here because |
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* <asm/asm-offsets.h> includes this, and I can't get the definition of "struct |
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* task_struct" here due to some header ordering problems. |
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*/ |
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static __always_inline struct task_struct *get_current(void) |
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{ |
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return riscv_current_is_tp; |
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} |
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#define current get_current() |
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#endif /* __ASSEMBLY__ */ |
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#endif /* _ASM_RISCV_CURRENT_H */
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