Immediate and displacement extraction and decode mechanism

Details Immediate and displacement extraction and decode mechanism Immediate and displacement extraction and decode mechanism

2011-03-15

2011-03-15

Chan, Eddie P (Department: 2183)

Electrical computers and digital processing systems: processing

Instruction decoding

Decoding instruction to accommodate variable length...

C712S208000, C712S300000

Reexamination Certificate

active

07908463

ABSTRACT:
An extraction and decode mechanism for acquiring and processing instructions and the corresponding constant(s) embedded within the instructions. The extraction and decode mechanism may be included within a processing unit, and may comprise an instruction decode unit and at least one constant steer network. During operation, the instruction decode unit may obtain and decode instructions which are to be executed by the processing unit. For each instruction, the instruction decode unit may also determine the location of one or more constants embedded within the instruction. The constant steer network may receive the location information from the instruction decode unit. While the instruction decode unit decodes the instruction, the constant steer network may obtain the constant(s) embedded within the instruction based on the location information and store the constant(s). The constant(s) embedded within the instruction may be immediate or displacement (imm/disp) constant(s).

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