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Consider following code:


Then the code is compiled with nasm, the output is:


As you can see, this isn't a near jump but a short one. How can I bring nasm to emit a near jump?

That is a near jump. What you want is a short jump.

Ah, I thought near means intrasegment absolute and short means relative, but near jumps can also be relative
There isn't a jump instruction with a absolute immediate destination, except far jump? No there is none, I know

Hi,



"Short" is 1-byte (signed) displacement, "near" is 2-byte or 4-byte (signed) displacement.



You can jump to an absolute target in a register (e.g. "jmp eax") and you can use indirect jumps (e.g. "jmp [pointer]"); but there's no jumping to an absolute immediate.

Note that there's very few cases where "jump to absolute immediate" makes sense but can't be converted into a near jump. The only case I can think of is jumping from position independent code to code at a fixed/known address.


Cheers,

Brendan