On Fri, Mar 18, 2016 at 06:26:47AM +0300, Andrei Borzenkov wrote:
> > [...]
> > CFLAGS=-ftrampolines -fno-stack-protector -fno-pie -nopie
> >
> > So I gave it a try and it seems better (?)
> >
> > $ ls -l
> > /home/jirib/openbsd/pobj/grub-2.02-beta3/fake-amd64/usr/local/lib/grub/i386-pc/lzma_decompress.im*
> > -rwxr-xr-x 1 jirib wheel 3068 Mar 17 21:45
> > /home/jirib/openbsd/pobj/grub-2.02-beta3/fake-amd64/usr/local/lib/grub/i386-pc/lzma_decompress.image*
> > -rw-r--r-- 1 jirib wheel 2832 Mar 17 21:45
> > /home/jirib/openbsd/pobj/grub-2.02-beta3/fake-amd64/usr/local/lib/grub/i386-pc/lzma_decompress.img
> >
> > $ objdump -f
> > /home/jirib/openbsd/pobj/grub-2.02-beta3/fake-amd64/usr/local/lib/grub/i386-pc/lzma_decompress.image
> >
> > /home/jirib/openbsd/pobj/grub-2.02-beta3/fake-amd64/usr/local/lib/grub/i386-pc/lzma_decompress.image:
> > file format elf32-i386
> > architecture: i386, flags 0x00000002:
> > EXEC_P
> > start address 0x00008200
> >
> > It is OK?
> >
>
> It certainly looks better than before. Does it actually work?
>
> We aready use -fno-PIE, looks like we need to explicitly check for
> -fno-pie as well.
I just booted OpenBSD from "native OpenBSD" grub2:
grub-install /dev/rwd0c # used qemu for testing
XX_xxxx files put into /etc/grub.d
cat >> /etc/grub.d/40_custom << EOF
menuentry "OpenBSD" {
set root=(hd0,4)
chainloader +1
}
EOF
grub-mkconfig -o /grub/grub.cfg
Thank you, I'm going to proceed with pxechainloader.
j.
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