cpu.cpp File Reference

OS/CPU/compiler dependent CPU specific calls. More...

#include "stdafx.h"
#include "core/bitmath_func.hpp"
#include "safeguards.h"

Go to the source code of this file.

Functions
void	ottd_cpuid (int info[4], int)
	Definitions for CPU detection:
bool	HasCPUIDFlag (uint type, uint index, uint bit)
	Check whether the current CPU has the given flag.

Detailed Description

OS/CPU/compiler dependent CPU specific calls.

Definition in file cpu.cpp.

Function Documentation

HasCPUIDFlag()

bool HasCPUIDFlag	(	uint	type,
		uint	index,
		uint	bit
	)

Check whether the current CPU has the given flag.

Parameters

type	The type to be passing to cpuid (usually 1).
index	The index in the returned info array.
bit	The bit index that needs to be set.

Returns

The value of the bit, or false when there is no CPUID or the type is not available.

Definition at line 84 of file cpu.cpp.

References HasBit(), and ottd_cpuid().

ottd_cpuid()

void ottd_cpuid	(	int	info[4],
		int	type
	)

Definitions for CPU detection:

Get the CPUID information from the CPU.

MSVC offers cpu information while gcc only implements in gcc 4.8 __builtin_cpu_supports and friends http://msdn.microsoft.com/library/vstudio/hskdteyh%28v=vs.100%29.aspx http://gcc.gnu.org/onlinedocs/gcc/X86-Built-in-Functions.html

Other platforms/architectures don't have CPUID, so zero the info and then most (if not all) of the features are set as if they do not exist.

Definition at line 78 of file cpu.cpp.

Referenced by HasCPUIDFlag().