Abstract
A microprogrammable target computer allows implementing a virtual machine efficiently. When implementing a compiler based high level language, the semantic level of the machine language has to be fixed. If the machine realizes a suitable virtual machine, the compiler writers task is simplified. This may be payed by the expense of implementing the virtual machine. The new retargetable compiler of the Mimola Software System (MSS) simplifies and speeds up the implementation process of a desirable machine language on a microprogrammable target computer. The efficiency of this approach is shown by an implementation of the logic programming language Prolog on the VLIW processor SAMP. The Warren Abstract Machine instruction set (W-Code) was choosen as the machine language of SAMP. The usage of the new retargetable compiler of the MSS for the development of a microcoded W-Code interpreter is described in this paper. The implementation has been tested and evaluated by feeding a simulator with the microcoded interpreter and the W-Code of the Warren Benchmark Set. The results indicate the performance of 44.5 KLIPS.
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