[LLVMdev] arguments to standard library functions
sabre at nondot.org
Sun Mar 20 21:19:06 PST 2005
On Mon, 21 Mar 2005, Abhijit Ray wrote:
> HI ,
> I understand that the standard C library functions are executed using the
> native library of the host machine. ( for example when we execute a bytecode
> to extract the profile info )
> Is it possible to extract for each standard library function that is
> executed , the arguments that the function is called with.
> For example if printf ("%d", some_int ) when called during runtime
> with some_int = 243 i want to get that info .
Sure, you can do that multiple ways. Perhaps the easiest would be to
write an LLVM->LLVM pass which inspects all calls to external functions
(e.g. printf) and inserts some code before or after it. Thus it would
Or something. You can then provide an implementation of the logging
runtime library to capture the data in any format you want.
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