[PATCH v2 6/8] score: Add AArch64 port

[Chris Johns]

On 29/9/20 9:37 pm, Sebastian Huber wrote:
> On 28/09/2020 17:24, Kinsey Moore wrote:
> 
>> +/* TODO(kmoore) The current implementation here assumes that SP is not
>> misaligned */
> Maybe add a ticket for this TODO and reference it in the comment.
>> +    .macro    JUMP_HANDLER
>> +    mov x0, #0x7f            /* mask to use in BIC, lower 7 bits */
>> +    bic x0,    lr,    x0        /* lr contains PC, mask off to the base of
>> the current vector */
>> +    ldr x0,    [x0,    #0x78]        /* load address from the last word in
>> the vector */
>> +    blr x0                /* branch and link to address in x0, no reason to
>> save current LR since it has already been saved and current contents are junk */
>> +    ldp x0,    lr,    [sp],    #16    /* pop x0,lr from stack */
>> +    eret                /* return from exception */
> Some lines are longer than 79 characters. I spotted also // comments. I have
> nothing against // comments in general, but before we introduce them, it would
> be good to update the coding style.

It seems Kinsey wrote the code with C comments so lets say use just C comments ...

https://developer.arm.com/documentation/100933/0100/AArch64-exception-vector-table

Chris