Why does SGX TCS need more than one SSA?

[gu_j_1]

In which situation, does one TCS need more than one SSA frame?

[Juan_d_Intel · Accepted solution]

A TCS would need more than one SSA frame to handle an exception that occurs within an enclave.

You can find the list of exceptions reported inside an enclave in section 2.9.12 VECTOR Field Definition in the Programming Reference.