Date: Thu, 01 Aug 2013 10:28:41 -0600 From: Ian Lepore <ian@FreeBSD.org> To: mattia.rossi.mate@gmail.com Cc: freebsd-arm@FreeBSD.org Subject: Re: Kernel Panic on DREAMPLUG: Alignment Fault 1 Message-ID: <1375374521.45247.211.camel@revolution.hippie.lan> In-Reply-To: <51FA8946.8030301@gmail.com> References: <51F92F79.9010809@gmail.com> <1375309907.45247.185.camel@revolution.hippie.lan> <51F9C81A.7000106@gmail.com> <1375358623.45247.189.camel@revolution.hippie.lan> <51FA1D2B.9090009@gmail.com> <1375363713.45247.193.camel@revolution.hippie.lan> <51FA8946.8030301@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 2013-08-01 at 18:13 +0200, Mattia Rossi wrote: > On 01/08/13 15:28, Ian Lepore wrote: > > On Thu, 2013-08-01 at 10:32 +0200, Mattia Rossi wrote: > >> <snip> > >> > >> Anyhow, I'll try to compile with gcc, and see what happens. > > The host system's compiler (gcc in your case) is used to build the > > selected compiler from src/, then that new compiler is used to build the > > rest of src/ into a runnable system. You can define WITHOUT_CLANG_IS_CC > > and WITHOUT_EABI to use gcc, and you should probably add WITHOUT_CLANG > > to avoid building it since it won't be used (and it takes forever to > > build). > Kernel built with gcc: > [snip... same fault as with clang] Yep, I just had the same experience -- same fault, same place, addresses differ by a few bytes which is to be expected with a different compiler. I've just confirmed that gcc and WITHOUT_ARM_EABI=yes works fine, so the problem seems to be that we're somehow not maintaining stack alignment correctly for EABI on architectures prior to armv6. I have a feeling somewhere in the code is something conditional on ARMV6 that really needs to include armv5te (which has the ldrd/strd instructions). -- Ian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1375374521.45247.211.camel>