Hi,<div><br></div><div>I have a question regarding assembly macro expansion in Clang. Google hasn't been helpful in turning up documentation and before I start investing a lot of time in reading source, I thought I'd ask for a quick pointer here.</div>
<div><br></div><div>We have code like this in our kernel:</div><div><br></div><div>.macro DO_SYSEXIT</div><div>addl $8, %esp /* skip ecx & edx */</div><div>...</div><div><br></div><div>Now Clang seems to interpret $8 as an insertion point for a (non-existing) parameter, which leads to the following error:</div>
<div><br></div><div><div><instantiation>:1:6: error: unknown token in expression</div><div>addl , %esp</div><div> ^</div></div><div><br></div><div>Question: why?</div><div><br></div><div>I haven't found any documentation concerning this, any pointers or explanations will be vastly appreciated, as I don't want to go to town on our code and change everything to addl $$8, ... which works, but that's not the way it should be, right? Disclaimer: I really don't have any experience with assembly, from what I know I assume that Clang uses AT&T syntax?</div>
<div><br></div><div>Thanks in advance,</div><div>Hermann</div>