addi sp, sp, -12
        sw ra, 8(sp)
        sw fp, 4(sp)
        addi fp, sp, 12
        lw t0, 4(fp)
        lw t1, 0(fp)
        lw t0, @.__len__(t0)
        beqz t0, strcat_4
        lw t1, @.__len__(t1)
        beqz t1, strcat_5
        add t1, t0, t1
        sw t1, -12(fp)
        addi t1, t1, 4
        srli t1, t1, 2
        addi a1, t1, @listHeaderWords
        la a0, $str$prototype
        jal alloc2
        lw t0, -12(fp)
        sw t0, @.__len__(a0)
        addi t2, a0, 16
        lw t0, 4(fp)
        lw t1, @.__len__(t0)
        addi t0, t0, @.__str__
strcat_1:
        beqz t1, strcat_2
        lbu t3, 0(t0)
        sb t3, 0(t2)
        addi t1, t1, -1
        addi t0, t0, 1
        addi t2, t2, 1
        j strcat_1
strcat_2:
        lw t0, 0(fp)
        lw t1, 12(t0)
        addi t0, t0, 16
strcat_3:
        beqz t1, strcat_6
        lbu t3, 0(t0)
        sb t3, 0(t2)
        addi t1, t1, -1
        addi t0, t0, 1
        addi t2, t2, 1
        j strcat_3
strcat_4:
        lw a0, 0(fp)
        j strcat_7
strcat_5:
        lw a0, 4(fp)
        j strcat_7
strcat_6:
        sb zero, 0(t2)
strcat_7:
        lw ra, -4(fp)
        lw fp, -8(fp)
        addi sp, sp, 12
        jr ra