2014-01-02 08:45:28 +00:00
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file cpu.h Functions related to CPU specific instructions. */
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#ifndef CPU_H
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#define CPU_H
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/**
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* Get the tick counter from the CPU (high precision timing).
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* @return The count.
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*/
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2024-01-07 16:41:53 +00:00
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uint64_t ottd_rdtsc();
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2014-01-02 08:45:28 +00:00
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2014-01-02 08:55:32 +00:00
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/**
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* Get the CPUID information from the CPU.
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* @param info The retrieved info. All zeros on architectures without CPUID.
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* @param type The information this instruction should retrieve.
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*/
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void ottd_cpuid(int info[4], int type);
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2014-01-02 18:52:54 +00:00
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/**
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* Check whether the current CPU has the given flag.
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* @param type The type to be passing to cpuid (usually 1).
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* @param index The index in the returned info array.
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* @param bit The bit index that needs to be set.
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* @return The value of the bit, or false when there is no CPUID or the type is not available.
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*/
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bool HasCPUIDFlag(uint type, uint index, uint bit);
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2014-01-02 08:45:28 +00:00
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#endif /* CPU_H */
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