This class manages the backdoors for RangeAddrMapper. More...

#include <backdoor_manager.hh>

Inheritance diagram for gem5::BackdoorManager:

Public Member Functions
	BackdoorManager (const std::vector< AddrRange > &original_ranges, const std::vector< AddrRange > &remapped_ranges)

MemBackdoorPtr	getRevertedBackdoor (MemBackdoorPtr backdoor, const AddrRange &pkt_range)

Protected Member Functions
MemBackdoorPtr	createRevertedBackdoor (MemBackdoorPtr backdoor, const AddrRange &pkt_range)
	This function creates a new backdoor, whose address range contains the original request address.

MemBackdoorPtr	findBackdoor (const AddrRange &pkt_range) const
	This function returns a created backdoor that fulfills the request, or returns nullptr if there's no.

Protected Attributes
const std::vector< AddrRange > &	originalRanges

const std::vector< AddrRange > &	remappedRanges

std::vector< std::list< std::unique_ptr< MemBackdoor > > >	backdoorLists
	In this vector, each entry contains a list of backdoors that in the range in original address view.

Detailed Description

This class manages the backdoors for RangeAddrMapper.

It provides functionalities such as backdoor remapping, resource managing.

Definition at line 55 of file backdoor_manager.hh.

Constructor & Destructor Documentation

◆ BackdoorManager()

gem5::BackdoorManager::BackdoorManager	(	const std::vector< AddrRange > &	original_ranges,
		const std::vector< AddrRange > &	remapped_ranges )

explicit

Definition at line 46 of file backdoor_manager.cc.

Member Function Documentation

◆ createRevertedBackdoor()

MemBackdoorPtr gem5::BackdoorManager::createRevertedBackdoor	(	MemBackdoorPtr	backdoor,
		const AddrRange &	pkt_range )

protected

This function creates a new backdoor, whose address range contains the original request address.

The address range is in initiator address view, and shouldn't exceed the original address range.

Does not support interleaved range backdoors.

Shrink the backdoor to fit inside address range.

Create the backdoor in original address view.

The backdoor pointer also needs to be shrinked to point to the beginning of the range.

Bind the life cycle of the created backdoor with the target backdoor. Invalid and delete the created backdoor when the target backdoor is invalidated.

Definition at line 66 of file backdoor_manager.cc.

References gem5::MemBackdoor::addInvalidationCallback(), gem5::X86ISA::addr, backdoorLists, gem5::MemBackdoor::flags(), gem5::ArmISA::i, originalRanges, panic, gem5::MemBackdoor::ptr(), gem5::MemBackdoor::range(), remappedRanges, gem5::AddrRange::size(), and gem5::AddrRange::start().