FE310 manual says that the interrupt vector base address in mtvec requires be 64 byte alignment.
Does this mean my trap routine need a .align 64 prior the code in assembly?
Yes. Except that’s .align 6 as 2^6 = 64
.align is ambiguous for historical reasons, different vendors gave it different meanings. You can avoid the ambiguity by using .balign (byte align) or .p2align (power of 2 align) instead.
1 Like