The ornamental design for a circular sawholdingassembly, as shown and described.
FIG. 1 is a front perspective view of a circular saw holding assembly showing my new design, the areas in phantom being for illustrative purposes only and forming no portion of the claimed invention;
FIG. 2 is a front elevated view of the circular saw holding assembly; and,
FIG. 3 is a rear elevated view of the circular saw holding assembly.