Re: Making a direct function call from inline assembly

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On Thursday 12 August 2010 19:10:58 you wrote:
> On 08/12/2010 09:44 AM, Job Noorman wrote:
> > Hi,
> > 
> > I am trying to make a direct function call from inline assembly like this:
> >      asm("call %0" : : "i"(func));
> > 
> > This doesn't work because GCC will generate something like
> > 
> >      call $mangledFunc
> > 
> > which will give an assembly error.
> > Is there a way to do this?
> > 
> > Thanks in advance!
> > Job
> > 
> > PS: I know I can do something like
> > 
> >      asm("call *%0" : : "r"(func));
> > 
> > But then it's not a direct call anymore.
> > 
> > PPS: I also posted this question on StackOverflow:
> > http://stackoverflow.com/questions/3467180/direct-call-using-gccs-inline-
> > assembly
> 
> Are you simply trying to do:
> 
>      asm("call func");
> 
> That produces the assembly language (using -S option to gcc):
>      call func
> 
> --Bob
Sorry, I forgot to mention I'm using C++ and I would like to not have to hard-
code the mangled function name.

Job


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