Re: Running armv7 on aarch64
Mark Millard <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
On 2022-Oct-18, at 11:18, Kristof Provost <[email protected]> wrote: > On 18 Oct 2022, at 19:38, Mark Millard wrote: > > On 2022-Oct-18, at 09:53, Kristof Provost <[email protected]> wrote: > > It’s not quite clear to me how this is supposed to work (now). On amd64 there’s a separate /libexec/ld-elf32.so.1, which we don’t have on aarch64. Is it supposed to be built? > > It’s broken on ab9293239c7d and e03b7883e97c at the very least. > > [I'm ignoring qemu, which I do not use. The below is from > a Cortex-A72 aarch64 context that can execute Cortex-A7 > armv7 code as well. Have you been using qemu?] > > Historically I've only been able to execute armv7 FreeBSD > code on aarch64 FreeBSD via using the likes of, say, > chroot'ing into an installed armv7 world in a directory > tree that I created for such. (I manually split some > liong-lineouptut for readabilty.) > > > Thanks for that! > > That’s at least part of what I was missing. Long story short, I’m trying to build an armv7 image on an aarch64 machine, and having issues with poudriere. I figured I was going to simplify things by executing the armv7 binary directly (to debug), but that’s missing a few steps and had me chasing down the wrong track. > > I can’t chroot into that armv7 jail, I still see errors like this: > > (kp@freebsd_current) /usr/local/poudriere/data/.m/main-pfSense_factory_ports_plus_devel/ref % sudo chroot . > ELF binary type "9" not known. > ELF binary type "9" not known. > chroot: /bin/sh: Exec format error > > But at least I think I’m looking in the correct direction now. Appropriately set up, poudriere's jails are like the chroot example I used. I do my armv7 port builds on a Cortex-A72 system via poudriere. (No qemu use involved.) # poudriere jail -jmain-CA7 -i Jail name: main-CA7 Jail version: 14.0-CURRENT Jail arch: arm.armv7 Jail method: null Jail mount: /usr/obj/DESTDIRs/main-CA7-poud Jail fs: Jail updated: 2021-06-27 17:58:33 Jail pkgbase: disabled /usr/obj/DESTDIRs/main-CA7-poud is analogous to my prior armv7 world example. === Mark Millard marklmi at yahoo.com