86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/**
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* \file timing_alt.h
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*
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* \brief Portable interface to the CPU cycle counter
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* 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, WITHOUT
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* 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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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef _TIMING_ALT_H_
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#define _TIMING_ALT_H_
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#include "stdint.h"
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/**
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* @brief timer structure
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*/
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struct mbedtls_timing_hr_time {
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uint64_t timer_ms;
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};
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/**
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* @brief Context for mbedtls_timing_set/get_delay()
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*/
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typedef struct {
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struct mbedtls_timing_hr_time timer;
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uint32_t int_ms;
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uint32_t fin_ms;
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} mbedtls_timing_delay_context;
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/**
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* @brief Return the elapsed time in milliseconds
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*
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* @param val points to a timer structure
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* @param reset if set to 1, the timer is restarted
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*/
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unsigned long mbedtls_timing_get_timer(struct mbedtls_timing_hr_time *val, int reset);
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/**
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* @brief Set a pair of delays to watch
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* Must point to a valid mbedtls_timing_delay_context struct.
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*
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* @param data Pointer to timing data
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* @param int_ms First (intermediate) delay in milliseconds.
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* @param fin_ms Second (final) delay in milliseconds.
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* Pass 0 to cancel the current delay.
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*/
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void mbedtls_timing_set_delay(void *data, uint32_t int_ms, uint32_t fin_ms);
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/**
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* @brief Get the status of delays
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* (Memory helper: number of delays passed.)
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*
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* @param data Pointer to timing data
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* Must point to a valid mbedtls_timing_delay_context struct.
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*
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* @return -1 if cancelled (fin_ms = 0)
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* 0 if none of the delays are passed,
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* 1 if only the intermediate delay is passed,
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* 2 if the final delay is passed.
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*/
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int mbedtls_timing_get_delay(void *data);
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#endif
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