System and method for the logical substitution of processor control in an emulated computing environment

A method for logically decoupling a host operating system of a computer system from the processor of the computer system, comprising the steps of:

• running on the host computer system an application program having a set of functionality associated with a supervisor state of the processor of the computer system;
• and
• replacing in the processor as part of a first replacement step a processor setting associated with the functionality of the application program and the supervisor state of the processor such that the host operating system is logically decoupled from the processor with respect to the processor operations associated with the replaced processor setting (a “decoupling process”).

A method for rerouting calls by a processor of a computer system to a guest operating system being emulated on a host operating system of the computer system, comprising writing in a set of replacement processor settings to the processor, the replacement set of processor settings associated with the functionality provided by the guest operating system, wherein with respect to the functionality associated with the replacement set of processor settings, the host operating system is logically decoupled from the processor and the guest operating system is logically coupled to the processor (a “decoupling process”).

A method for logically decoupling a host operating system from a processor of a computer system, comprising the steps of:

• saving the contents of a set of registers on the processor to memory, the set of registers storing at least a part of the processor settings of the processor;
• and
• writing to the set of registers a replacement set of processor settings associated with functionality provided by an application program on the host operating system.

A computer-readable medium comprising computer-readable instructions for emulating in a host computer system a guest computer system, the host computer system including a processor and a host operating system, said computer-readable instructions comprising instructions for:

• running an emulator program on the host system that emulates the operation of a guest operating system;
• and
• logically decoupling the host operating system from the processor for at least one processor function related to a guest processor setting associated with the emulator program.

A computer-readable medium comprising computer-readable instructions for logically decoupling a host operating system of a computer system from the processor of the computer system, said computer-readable instructions comprising instructions for:

• running on the host computer system an application program having a set of functionality associated with a supervisor state of the processor of the computer system;
• and
• replacing in the processor as part of a first replacement step a processor setting associated with the functionality of the application program and the supervisor state of the processor such that the host operating system is logically decoupled from the processor with respect to the processor operations associated with the replaced processor setting (a “decoupling process”).

A computer-readable medium comprising computer-readable instructions for rerouting calls by a processor of a computer system to a guest operating system being emulated on a host operating system of the computer system, comprising instructions for writing in a set of replacement processor settings to the processor, the replacement set of processor settings associated with the functionality provided by the guest operating system, wherein with respect to the functionality associated with the replacement set of processor settings, the host operating system is logically decoupled from the processor and the guest operating system is logically coupled to the processor (a “decoupling process”).

A computer-readable medium comprising computer-readable instructions for logically decoupling a host operating system from a processor of a computer system, said computer-readable instructions comprising instructions for:

• saving the contents of a set of registers on the processor to memory, the set of registers storing at least a part of the processor settings of the processor;
• and
• writing to the set of registers a replacement set of processor settings associated with functionality provided by an application program on the host operating system.