Re: [patch/rfa] allow unwinding "past main" for dummy frames

[Daniel Jacobowitz <drow at false dot org>]

On Sun, Dec 05, 2004 at 07:27:26PM -0800, Randolph Chung wrote:
> On hpux, we push a small bit of code on the stack to implement function
> calls from gdb. The stack trampoline contains a return address that
> points back to the current function. this is needed to properly restore
> the space registers (see hppa_hpux_push_dummy_code in hppa-hpux-tdep.c
> for a much more detailed explanation).  The upshot of all of this is
> that when we do a backtrace from a gdb-called function, a backtrace can
> be prematurely truncated at a dummy frame. Since it doesn't make sense
> anyway to stop unwinding at dummy frames, this patch skips the "main
> function" detection logic for dummy frames. The same logic is already
> there for checking against the entry function a bit farther down in
> get_prev_frame ().
> 
> ok?

Could you explain to me how inside_main_func is returning true for a
dummy frame?

The code is there for inside_entry_func because we used to use the
actual entry point as a location for the dummy frame.

-- 
Daniel Jacobowitz