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In this paper, taking JPOR-32 as an example, the mechanism of instruction decode (ID) for embedded real-time Java processor is presented. In light of the complex format of Java bytecodes instructions and the predictable requirement, a two-stage ID mechanism which provides effective support for predictability and efficiency of the processor is adopted. In ID stage one, complex instructions are converted...
Currently, Java has been gradually applied in embedded real-time area with the improvement by the Real-Time Specification for Java (RTSJ). Accordingly, a hardware Java execution engine for embedded real-time applications, JPOR-32 (32-bit Java Processor Optimized for RTSJ), is designed. Taking JPOR-32 for an example, this paper presents the garbage collection mechanism for RTSJ-oriented embedded processor...
In the aspect of real-time Java, RTSJ makes a series of effective work and provides the criteria for researches. In order to provide efficient execution platform for real-time Java, a RTSJ-oriented 32-bit embedded processor that can directly execute Java bytecodes-JPOR-32 was designed. Among Java bytecodes, the method invocation and return instructions are extraordinary complex. Executing these instructions...
Currently, Java has been gradually applied in such areas as robotics, industrial control, and other embedded real-time applications owning to its advantages like platform independence, robustness, security, etc. In order to improve the performance of Java's execution engine for embedded real-time applications, an embedded real-time Java processor JPOR-32 (32-bit Java Processor Optimized for RTSJ)...
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