byte-code

(file format, software)

A binary file containing an executable program, consisting of a sequence of (op code, data) pairs.

Byte-code op codes are most often fixed size binary patterns, but can be variable size. The data portion consists of zero or more bits whose format typically depends on the op code.

A byte-code program is interpreted by a byte-code interpreter. The advantage of this technique compared with outputing machine code for some particular processor is that the same byte-code can be executed on any processor on which the byte-code interpreter runs. The byte-code may be compiled to machine code ("native code") for speed of execution but this usually requires significantly greater effort for each new taraget architecture than simply porting the interpreter.

For example, Java is compiled to byte-code which runs on the Java Virtual Machine.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

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References in periodicals archive

Java applications are typically compiled to byte-code that can run on any Java virtual machine (JVM) regardless of computer architecture.

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The process of mutation is simplified because we do not try to replace the original byte-code instructions with mutated instructions.

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Instead of modifying the source code, monitoring tools typically apply a second form of instrumentation to the byte-code of the compiled application.

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NaturalBridge LLC, a Menlo Park, California-based start-up founded three years ago by former employees of IBM Corp, Intel Corp and Sun Microsystems Inc, claims it is the first company to come out with a static byte-code compiler designed specifically for Java.

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Java's byte-code instruction are at a much lower semantic level.

On the other hand, a tree-based encoding has several important advantages over a linear stream of byte-codes for some virtual machine.

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