Method and apparatus for processing self-modifying codes

Abstract

A method of handling self-modifying codes is presented. The method is performed by computer processor and comprises: receiving a fetch block of instruction data from an instruction fetch buffer; before transmitting the fetch block of instruction data to a decoding unit of the computer processor, determining whether the fetch block includes instruction data of self-modifying codes; responsive to determining that the fetch block includes instruction data of self-modifying codes, transmitting a flush signal to reset one or more internal buffers of the computer processor.

Description

technical field [0001] The present invention relates generally to the field of computer architecture, and more particularly to methods and apparatus for handling self-modifying code. Background technique [0002] Self-modifying code may refer to a set of computer codes that modify themselves when executed by a computer processor. Self-modifying code is widely used for runtime code generation (e.g. during live writing). Self-modifying code is also widely used in embedded applications to optimize memory usage during code execution, thereby increasing code density. [0003] figure 1 An example of self-modifying code is shown. figure 1 Shown are software codes 102 and 104, each of which includes a certain number of instructions executable by a computer processor. Software codes 102 and 104 may be stored in different locations in memory. For example, software code 102 may be stored in memory at a location associated with the label "old_code" (old_code) and software code 104 ...

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Problems solved by technology

This can cause execution failures and increase processing delays for computer processors

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