86c5cf18db
The goal of this sample application is to measure the performance loss when a user thread has to go through a system call compared to a supervisor thread that calls the function directly. Signed-off-by: Nicolas Royer <nroyer@baylibre.com>
21 lines
315 B
C
21 lines
315 B
C
/*
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* Copyright (c) 2020 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef MAIN_H
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#define MAIN_H
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#include <kernel.h>
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#define csr_read(csr) \
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({ \
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register unsigned long __v; \
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__asm__ volatile ("csrr %0, " #csr \
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: "=r" (__v)); \
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__v; \
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})
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#endif /* MAIN_H */
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