How to avoid stack calling for trapoline code?

[Kai Tietz]

Ian Lance Taylor <iant@google.com> wrote on 04.04.2008 16:53:53:

> Kai Tietz <Kai.Tietz@onevision.com> writes:
> 
> > While running testsuite for target x86_64-pc-mingw32, I noticed that 
the 
> > stack segement has for this target no execution permission. May 
somebody 
> > could help me, how to avoid the use of stack based trampoline code.
> > Do you know how to avoid this HJ?
> 
> For the testsuite, set gcc,no_trampolines in the appropriate DejaGNU
> file.  Or extend the testsuite to look for your specific target.
> 
> For the compiler, put a call to sorry into INITIALIZE_TRAMPOLINE,
> which for your platform is really x86_initialize_trampoline.
> 
> Note that the compiler supports calling a function to enable an
> executable stack--see ENABLE_EXECUTE_STACK in i386.c--so that is an
> option if such a function is available.

I choose the support of ENABLE_EXECUTE_STACK.

Could you approve this patch I posted (at least for libgcc2.c)?

http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00457.html


Thanks in advance,
  Kai

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