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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file cpu.h Functions related to CPU specific instructions. */
#ifndef CPU_H
#define CPU_H
/**
* Get the tick counter from the CPU (high precision timing).
* @return The count.
*/
uint64 ottd_rdtsc();
/**
* Get the CPUID information from the CPU.
* @param info The retrieved info. All zeros on architectures without CPUID.
* @param type The information this instruction should retrieve.
*/
void ottd_cpuid(int info[4], int type);
/**
* Check whether the current CPU has the given flag.
* @param type The type to be passing to cpuid (usually 1).
* @param index The index in the returned info array.
* @param bit The bit index that needs to be set.
* @return The value of the bit, or false when there is no CPUID or the type is not available.
*/
bool HasCPUIDFlag(uint type, uint index, uint bit);
#endif /* CPU_H */
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