Are any of these valid instructions? movb (%rax),%al movl (%ecx),%eax movq (%ecx),%rax

0 votes

asked Sep 25, 2022 in General Knowledge by iskralawrence (773k points)

Are any of these valid instructions?
movb (%rax),%al
movl (%ecx),%eax
movq (%ecx),%rax

Facebook Twitter LinkedIn

Your answer

Your name to display (optional):

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

1 Answer

0 votes

answered Sep 25, 2022 by iskralawrence (773k points)

Best answer

1) Yes, take 1 byte from value at address in rax and copy it into al.

2) No, cannot get address from 4 byte register.

3) No, cannot get address from 4 byte register.

Your comment on this answer:

Your name to display (optional):

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Welcome to the Answerine , a great place to find, read and share your favorite questions and answers.

Are any of these valid instructions? movb (%rax),%al movl (%ecx),%eax movq (%ecx),%rax

Your answer

1 Answer

Your comment on this answer:

Related questions