Re: Wine's support for reporting calling conventions

[Roger Cruz]

Hi Eric,

Thanks for replying.  I saw that in the DWARF spec and I was afraid that DWARF may not provide detailed Info. But I also read in the spec that the compilers use a DWARF extension feature to convey additional info such as calling convention for each routine.  Is there a way to coax GCC to output that information?  Maybe thru a target plugin?

Thanks
Roger

On Jun 6, 2012, at 3:06 AM, Eric Pouech  wrote:
> that's a limitation of dwarf format (IIRC, from the specs, you have
> either the default CC for your programming language/ABI, or a specific
> one without defining it further)
> FYII, the codeview format reports correctly this information
> note also that winedbg doesn't support calling functions in the
> debuggee, so this information is actually not used in winedbg
> A+
>
> 2012/6/6, Roger Cruz :
> > In dlls/dbghelp/dwarf.c, there is this snippet of code which appears to
> > hard-code the calling convention to CALL_FAR_C.  Does Wine not support
> > reporting a function's calling convention correctly then?  Is it a
> > limitation of DWARF or just that it is not implemented?  I can see that
> > DWARF has a DW_AT_calling_convention field but when I examine a Wine DLL
> > with objdump, it does not show this field in use.
> >
> > /* FIXME: assuming C source code */
> >    sig_type = symt_new_function_signature(ctx->module, ret_type,
> > CV_CALL_FAR_C);
> >
> > Thanks
> > Roger
> --
>
> Eric Pouech