Re: Linksys NSLU2 (evbarm, armeb) userspace regression origin found

[Nick Hudson <skrll%netbsd.org@localhost>]

On 05/16/15 12:35, Eddy Petrișor wrote:
> Hi again,
>
> I have created the attached patch to fix the user space issue
> introduced by the commit quoted in the mail below (basically adding
> also ' TARGET_ENDIAN_DEFAULT=MASK_BIG_END' to tm_defines).

I think netbsd-elf.h should change - see diff. Can you test?

Thanks for finding the problem.

> Using NetBSD 6.1.5 kernel and some more recent user spaces generated
> from trunk (for instance, 'build', 'distribution', sets' obtained from
> trunk code dated 2013-09-14), I get a lot of messages
> '/etc/ld.so.conf: invalid/unknown sysctl for libc.so.12 (22)' after
> starting init.
>
> Any idea what this is? Is it due to the fact I am using NetBSD
> 6.1.5_PATCH kernel with newer userspace (etc/obj/etc-release says
> 'NetBSD 6.99.23/evbarm')?

Yeah, don't do that. It's not supported.

Backwards compatibility is supported (with correct options in the 
kernel), but not forwards.

Nick


Index: external/gpl3/gcc/dist/gcc/config/arm/netbsd-elf.h
===================================================================
RCS file: /cvsroot/src/external/gpl3/gcc/dist/gcc/config/arm/netbsd-elf.h,v
retrieving revision 1.7
diff -u -p -r1.7 netbsd-elf.h
--- external/gpl3/gcc/dist/gcc/config/arm/netbsd-elf.h	1 Mar 2014 09:04:12 -0000	1.7
+++ external/gpl3/gcc/dist/gcc/config/arm/netbsd-elf.h	16 May 2015 12:20:31 -0000
@@ -30,9 +30,12 @@
 	(ARM_DEFAULT_ABI != ARM_ABI_APCS && ARM_DEFAULT_ABI != ARM_ABI_ATPCS \
 	    ? TARGET_CPU_arm926ejs : TARGET_CPU_arm6)
 
-/* This defaults us to little-endian.  */
-#ifndef TARGET_ENDIAN_DEFAULT
-#define TARGET_ENDIAN_DEFAULT 0
+/* TARGET_BIG_ENDIAN_DEFAULT is set in
+   config.gcc for big endian configurations.  */
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_ENDIAN_DEFAULT    MASK_BIG_END
+#else
+#define TARGET_ENDIAN_DEFAULT    0
 #endif
 
 #undef MULTILIB_DEFAULTS