Emulating a host architecture in guest firmware

Details Emulating a host architecture in guest firmware Emulating a host architecture in guest firmware

2004-09-30

2009-08-04

Rodriguez, Paul L (Department: 2123)

Data processing: structural design, modeling, simulation, and em

Emulation

Of instruction

C703S027000, C718S001000

Reexamination Certificate

active

07571090

ABSTRACT:
Systems and methods provide for emulating a host architecture in guest firmware. One aspect of the systems and methods comprises determining whether an emulated instruction would cause a transition into a legacy mode. A current execution context is converted into a legacy mode context, and the firmware emulator proceeds to a group of legacy mode instructions in a native mode for the processor. The firmware emulator detects an end instruction and converts the legacy context back to the guest firmware context.

REFERENCES:
patent: 7225436 (2007-05-01), Patel
patent: 7451443 (2008-11-01), Lowell et al.
patent: 7478388 (2009-01-01), Chen et al.
patent: 2003/0061497 (2003-03-01), Zimmer
patent: 2005/0246453 (2005-11-01), Erlingsson et al.
patent: 2005/0246718 (2005-11-01), Erlingsson et al.

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