Property Driven Test Generation in Absence of Direct Interface

This paper presents an automatic test generation methodology for complex coverage points in the context of systems consisting of an environment (E), a machine (M) and a controller (C). The coverage points are modeled as temporal scenarios over a set of low-level events supported in M. These events can´t be generated directly. There exists a set of high-level macros (supported in E) that can generate these events. The objective is to generate a sequence of macros to reach a complex coverage point in M. We present a prototype tool that automatically generates a systemverilog test-bench for the required macro sequence generation. The result on DLX pipeline shows the effectiveness of the approach