What is offset instruction in AT&T syntax?

[NeonLightions]

Hi,
Like the title, I want to know which instruction in AT&T syntax as same as "offset" instruction in Intel syntax?

[kzinti]

I think you are looking for the $ prefix... "offset" is not an instruction but a statement that tells the assembler you want the address (really the segment offset) of the following expression.

For example:

Code: Select all

mov offset label, eax # Get the address of label into eax

Becomes:

Code: Select all

movl %eax, $label # Get the address of label into eax

I am not sure if this covers all the cases. But t might just do.

[BigBuda]

I think you are looking for the $ prefix... "offset" is not an instruction but a statement that tells the assembler you want the address (really the segment offset) of the following expression.

For example:

Code: Select all

mov offset label, eax # Get the address of label into eax

Becomes:

Code: Select all

movl %eax, $label # Get the address of label into eax

I am not sure if this covers all the cases. But t might just do.

Didn't you mistake the order? Isn't the exact opposite? Intel syntax is mov destination, source and AT&T is mov source, destination.

[NeonLightions]

Oh, so it just basically the "$" prefix? Thank you for the answer!

[kzinti]

Didn't you mistake the order? Isn't the exact opposite? Intel syntax is mov destination, source and AT&T is mov source, destination.

Yep, sure did. Just inverse the operands in both of my examples.