Memory represents a major bottleneck in embedded systems. For multimedia applications bulky of data in these embedded systems require shared memory. But the integration of this kind of memory implies some architectural modifications and code transformations. And no automatic tool exists allowing designers to integrate shared memory in the SoC design flow. In this work, we present a systematic approach for the design of shared memory architectures for application-specific multiprocessor systems-on-chip. This work focuses on the code-transformations related to the integration of a shared memory.