Re: CVS commit: src/sys

[Paul Goyette <paul%whooppee.com@localhost>]

OK, I think I found the problem, but I don't know how to solve it...

All of the undefined symbols are supposed to be provided by

	.../sys/arch/arm/arm32/netbsd32_machdep.c

but there is no netbsd32_machdep.o included in the compat_netbsd32
module.  This file should be included by the following code in 
.../sys/modules/compat_netbsd32/Makefile

	.if ${MACHINE_ARCH} == "arm"
	.PATH:  ${S}/arch/arm/arm32
	SRCS+=  netbsd32_machdep.c
	.endif

but it seems not to work (or at least, it doesn't do what it was
intended to do).






On Thu, 5 Nov 2020, Rin Okuyama wrote:

> On 2020/11/05 5:43, Paul Goyette wrote:
> > BTW, the patch you submitted with the initial message in this thread
> > looks good for avoiding the issue.  But I'm not sure it is a complete
> > solution.
> >
> > In particular, you would need to build a 32-bit arm that contains ``no
> > options COMPAT_NETBSD32'' and then boot and load the compat_netbsd32
> > and compat_netbsd32_coredump modules
> >
> >      modload compat_netbsd32
> >      modload compat_netbsd32_coredump
> >
> > Then see if emulation of the old ABI still works, and check if core-
> > dump works for old-ADI programs; the test program I've been using for
> > core-dump checking is
> >
> >      #include <stdlib.h>
> >      int main(int argc, void *argv) { abort(); }
> >
> > I really have to leave and take care of some personal business, so I
> > would greatly appreciate if you can check this out.
>
> Hmm, ``modload compat_netbsd32'' does not work on evbarmv6hf-el:
>
> ----
> # uname -ap
> NetBSD  9.99.75 NetBSD 9.99.75 (RPI0) #11: Thu Nov  5 20:26:39 JST 2020 
> rin@latipes:/sys/arch/evbarm/compile/RPI0 evbarm earmv6hf
> # modload compat_netbsd32
> [  29.6328410] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `netbsd32_vm_default_addr' not found
> [  29.6460400] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `netbsd32_machdep_md_init' not found
> [  29.6560750] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `netbsd32_sendsig' not found
> [  29.6661200] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `cpu_mcontext32_validate' not found
> [  29.6791570] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `cpu_setmcontext32' not found
> [  29.6791570] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `netbsd32_machdep_md_fini' not found
> [  29.6948370] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `startlwp32' not found
> [  29.7048770] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `cpu_getmcontext32' not found
> [  29.7168550] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `machine32' not found
> [  29.7168550] kobj_checksyms, 994: [compat_netbsd32]: linker error: symbol 
> `netbsd32_sysarch' not found
> [  29.7318320] WARNING: module error: unable to affix module 
> `compat_netbsd32', error 8
> modload: compat_netbsd32: Exec format error
> ----
>
> This should be because there are ``#ifdef COMPAT_NETBSD32'' codes in files
> not included in compat_netbsd32 module. compat_netbsd32 module must not
> work also for aarch64 and mips64 for the same reason, whereas amd64 and
> sparc64 seem OK.
>
> Thanks,
> rin
>
> !DSPAM:5fa3f309175521945872603!

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