[PATCH v5] Support SHF_GNU_RETAIN ELF section flag

[Jozef Lawrynowicz]

On Thu, Nov 19, 2020 at 03:43:46PM +1030, Alan Modra wrote:
> Hi Jozef,
> Some fallout from your patch.
> 
> alpha-unknown-freebsd4.7  +FAIL: SHF_GNU_RETAIN sections 22
> alpha-unknown-freebsd4.7  +FAIL: SHF_GNU_RETAIN set with numeric flag value in .section
> alpha-unknown-freebsd4.7  +FAIL: Merge SHF_GNU_RETAIN for non-unique sections
> arm-netbsdelf  +FAIL: Unknown SHF_MASKOS value in section
> arm-netbsdelf  +FAIL: -t (section details) for unknown SHF_MASKOS value in section
> arm-nto  +FAIL: Unknown SHF_MASKOS value in section
> arm-nto  +FAIL: -t (section details) for unknown SHF_MASKOS value in section
> bfin-linux-uclibc  +FAIL: SHF_GNU_RETAIN 3 (keep sections referenced by retained sections)
> bfin-linux-uclibc  +FAIL: SHF_GNU_RETAIN 6a (pull section out of lib required by SHF_GNU_RETAIN section)
> bfin-linux-uclibc  +FAIL: SHF_GNU_RETAIN 6b (pull section out of lib required by SHF_GNU_RETAIN section)
> frv-linux  +FAIL: SHF_GNU_RETAIN 3 (keep sections referenced by retained sections)
> frv-linux  +FAIL: SHF_GNU_RETAIN 6a (pull section out of lib required by SHF_GNU_RETAIN section)
> frv-linux  +FAIL: SHF_GNU_RETAIN 6b (pull section out of lib required by SHF_GNU_RETAIN section)
> hppa64-hp-hpux11.23  +FAIL: -t (section details) for unknown SHF_MASKOS value in section
> lm32-linux  +FAIL: SHF_GNU_RETAIN 3 (keep sections referenced by retained sections)
> lm32-linux  +FAIL: SHF_GNU_RETAIN 6a (pull section out of lib required by SHF_GNU_RETAIN section)
> lm32-linux  +FAIL: SHF_GNU_RETAIN 6b (pull section out of lib required by SHF_GNU_RETAIN section)
> mips64el-openbsd  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mips64-linux  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mips64-openbsd  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mipsel-linux-gnu  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mipsisa32el-linux  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mips-linux  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> mips-sgi-irix6  +FAIL: SHF_GNU_RETAIN 5 (don't pull SHF_GNU_RETAIN section out of lib)
> powerpc64-freebsd  +FAIL: SHF_GNU_RETAIN sections 22
> powerpc64-freebsd  +FAIL: SHF_GNU_RETAIN set with numeric flag value in .section
> powerpc64-freebsd  +FAIL: Merge SHF_GNU_RETAIN for non-unique sections
> powerpc-freebsd  +FAIL: SHF_GNU_RETAIN sections 22
> powerpc-freebsd  +FAIL: SHF_GNU_RETAIN set with numeric flag value in .section
> powerpc-freebsd  +FAIL: Merge SHF_GNU_RETAIN for non-unique sections
> sparc-sun-solaris2  +FAIL: Unknown SHF_MASKOS value in section
> sparc-sun-solaris2  +FAIL: -t (section details) for unknown SHF_MASKOS value in section
> x86_64-cloudabi  +FAIL: -t (section details) for unknown SHF_MASKOS value in section
> 

On Thu, Nov 19, 2020 at 10:37:29AM +0000, Nick Clifton wrote:
> 
> And a few more:
> 
> m68k-uclinux ...
>   BIN REGRESSION: Unknown SHF_MASKOS value in section
>   BIN REGRESSION: -t (section details) for unknown
> 
> x86_64-solaris2 ...
>   BIN REGRESSION: Unknown SHF_MASKOS value in section
>   BIN REGRESSION: -t (section details) for unknown
> 
> sparc64-solaris2 ...
>   BIN REGRESSION: Unknown SHF_MASKOS value in section
>   BIN REGRESSION: -t (section details) for unknown
> 
> Cheers
>   Nick
> 

Thanks, I'm taking a look.

IIUC, Solaris doesn't support the GNU OSABI so should not be part
of the supports_gnu_osabi proc.

Also we allow mapping ELFOSABI_NONE to ELFOSABI_GNU for all targets, but
this mapping should somehow be disabled for Solaris.

Jozef