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Re: 64bit startup

From: Sergey Bugaev
Subject: Re: 64bit startup
Date: Fri, 5 Jan 2024 21:12:48 +0300

I'm not seeing hurd-dbg / hurd-libs-dbg packages in your repo. Could
you please either teach me where to look, or if they're indeed
missing, upload them?

Also I can't help but notice that the hurd package (i.e the translator
binaries) is still not being built as PIE, unlike basically all the
other binaries. This actually helps with debugging for now, but please
remember to ensure it does end up as PIE when the system is ready for
broader use.

/servers/crash-dump-core crashes on the memset () call in
hurd:exec/elfcore.c:fetch_thread_fpregset (); the (*fpregs) pointer is
NULL. The caller passes fpregs = &note.data.pr_fpreg, where note.data
is of type struct elf_lwpstatus, defined in hurd:include/sys/procfs.h,
whose pr_fpreg field is of type prfpregset_t, which is a typedef to
fpregset_t, which was an actual struct on i386, but is a pointer on
x86_64. This would've been easier to debug if I had debuginfo :)


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