why overflow flag being set?
"A D" <[email protected]>
| Newsgroups | gmane.linux.assembly |
|---|---|
| Message-ID | <[email protected]> |
I've a question about the handling of signed and unsigned numbers by GAS.
When I
write the following:
movb $128, %bl
addb $10, %bl
bl register doesn't overflow and overflow flag is not set. But as soon as I
use
127 instead of 128 like this:
movb $127, %bl
addb $10, %bl
overflow flag is set. Does this mean when i move a value to a register
smaller
or equal to the maximum signed value that register can contain, gas treats
it as
signed number? Thanks.
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