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Re: Trouble with new GNU_STACK segment
In article <47319df87dc.4b8412a5%mail.owl.de@localhost>,
Frank Wille <frank%phoenix.owl.de@localhost> wrote:
>On 06.11.15 19:29:26 I wrote:
>> [...] So I was looking for reasons and finally found
>> that the additional GNU_STACK segment in the kernel is the problem.
>> "readelf -l" on current kernel:
>> Program Headers:
>> Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg
>> Align LOAD 0x000080 0x00100000 0x00100000 0x1f7a4c 0x210d20
>> RWE 0x40 GNU_STACK 0x000000 0x00000000 0x00000000 0x00000
>> 0x00000 RWE 0x4
>"Only" PowerPC executables and kernels are affected. You find GNU_STACK in
>the kernels of all PPC ports.
>So there's just something which has been forgotten in the PowerPC tools?
>In PPC object files there is also this ".note.GNU-stack" section, which is
>missing for other architectures. From a short glance at the ld sources I
>think that the GNU_STACK segment is automatically created when such a
>section was found in any object file.
>But I see no option to suppress ".note.GNU-stack" in objects...
Yes, I guess the best thing is to strip it with a linker script. It
seems to be done on purpose:
#if defined (POWERPC_LINUX) || defined (POWERPC_FREEBSD) \
|| defined (POWERPC_NETBSD)
if (TARGET_32BIT || DEFAULT_ABI == ABI_ELFv2)
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