.text
    .balign 4
    .global vec_strcmp
  # int vec_strcmp(const char *src1, const char* src2)
vec_strcmp:
    ##  Using LMUL=2, but same register names work for larger LMULs
    li t1, 0                # Initial pointer bump
loop:
    vsetvli t0, x0, e8, m2, ta, ma  # Max length vectors of bytes
    add a0, a0, t1          # Bump src1 pointer
    vle8ff.v v8, (a0)       # Get src1 bytes
    add a1, a1, t1          # Bump src2 pointer
    vle8ff.v v16, (a1)      # Get src2 bytes

    vmseq.vi v0, v8, 0      # Flag zero bytes in src1
    vmsne.vv v1, v8, v16    # Flag if src1 != src2
    vmor.mm v0, v0, v1      # Combine exit conditions
    
    vfirst.m a2, v0         # ==0 or != ?
    csrr t1, vl             # Get number of bytes fetched
    
    bltz a2, loop           # Loop if all same and no zero byte

    add a0, a0, a2          # Get src1 element address
    lbu a3, (a0)            # Get src1 byte from memory

    add a1, a1, a2          # Get src2 element address
    lbu a4, (a1)            # Get src2 byte from memory

    sub a0, a3, a4          # Return value.

    ret