> -----Original Message-----
> From: devel [mailto:devel-boun...@rtems.org] On Behalf Of Chris Johns
> Sent: Thursday, June 14, 2018 7:56 AM
> To: j...@rtems.org; Amaan Cheval
> Cc: RTEMS
> Subject: Re: [GSoC - x86_64] Using FreeBSD's UEFI loader for RTEMS static
> binaries
[...]
> > >>
> >
> > -------------------------------------------------------------------------------------
> > >>
> > >> What I need input on:
> > >> - Right now, we use the following RTEMS code for testing:
> > >>
> > >> int main() {
> > >> while(1) {}
> > >> }
> > >>
> > >
> > > It's not really an RTEMS code, it is a C program (ktest.c) compiled
> > > with the RTEMS-flavored toolchain, right?
> >
> > Yeah, for now that's right. I'm going to conduct the same gdb based
> > debug-stepping style test for RTEMS setting boot_card as the entry
> > point soon - for now, it crashes QEMU with:
> >
> > qemu: fatal: Trying to execute code outside RAM or ROM at
> 0x00000000000b0000
> >
> > RAX=00000000006004c0 RBX=00000000006003d8 RCX=0000000037f36000
> > RDX=0000000000400000
> > RSI=0000000004000000 RDI=0000000000000180 RBP=00000000006003d8
> > RSP=000000003c589fb8
> > ...
> >
> > I see that it reaches that stage even from some code it ought not to
> > be executing, so I'll look into what that may be about.
>
> Hmm.
>
I don't know if that is of any help, but when I was starting to use the
i386-bsp with our build system I had a similar issue.
The reason was that I forgot to use the linker flags (-Wl,-Ttext,0x00100000)
used in the RTEMS makefiles in our build setup.
Maybe something similar has to be done for x86_64 too in order to relocate the
text section to a more sensible location?
[...]
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
German Aerospace Center
Simulation and Software Technology | Software for Space Systems and Interactive
Visualization | Lilienthalplatz 7 | 38108 Braunschweig | Germany
Jan Sommer
Telephone +49 531 295-2494 | Telefax 0531 295-2767 | jan.som...@dlr.de
DLR.de/SC
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