On Tue, Mar 25, 2008 at 4:39 AM, Matteo Emanuele <[EMAIL PROTECTED]> wrote: > Hi, > I that hope this is the right place for this kind of > questions! > However my question is rather simple: knowing the > AMD64 ABI, is it possible to implement your own > flavour of the va_xxx macros? > If I compile _without_ -fomit-frame-pointer I'm able > to retrieve the arguments pushed on the stack, but I'm > not able to point correctly the register save area. Is > this area placed at fixed position like the red zone? > If not how I can find it (if possible)? > Thanks for the time spent reading, > Matteo >
As far as I can tell, vararg implementation is local to callee. I don't know why it has to be in psABI. To support Intel AVX, I'd like to move integer registers after SSE registers in the register save area, i.e. Register Offset xmm0 0 .... xmm15 240 rdi 256 ... Will there be any problems? Thanks. H.J.
