Correction: rsp and rbp are 64-bit registers storing 64-bit stack memory addresses, while popcount eax, edi is taking the 32-bit parameter as input and returnin

Correction: rsp and rbp are 64-bit registers storing 64-bit stack memory addresses, while popcount eax, edi is taking the 32-bit parameter as input and returning the 32-bit return value. The calling convention is x64 C.