Method and system for emulating instructions by performing an op

Details Method and system for emulating instructions by performing an op Method and system for emulating instructions by performing an op

1996-01-25

1998-05-26

Lim, Krisna

395376, 395500, G06F 942

Patent

active

057581401

ABSTRACT:
A system and method for improving the performance of a processor that emulates a guest instruction where the guest instruction includes a first and second operand. The first operand is stored in a general purpose register, and the second operand is stored in a special-purpose register. The method and system provides a host instruction that performs an operation using the first operand and the second operand without moving the second operand from the special-purpose register into the general purpose register. This reduces the number of instructions in the semantic routines necessary to operate on immediate data from guest instructions and increases emulation performance.

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