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Position Independent Executables for ARM

Alexandre Belloni submitted a patch to the Linux-kernel list with patch to run Position Independent Executables (PIEs) on ARM:

Embedding Position Independent Executables:
This series introduces Position Independent Executables (PIEs) for the ARM architecture. The main goal is to avoid having to write low level code in assembly as this is currently the case for suspend/resume. Multiple platforms will benefit from this infrastructure: at91, rockchip, sunxi, am335x. I’ve still avoided using the ELF header itself to be more efficient. For example, for atmel, the PIE is 66772 bytes when embedded in an ELF versus 344 bytes standalone. This is working properly because the PIE is self standing and correctly padded. Changes in v2:
 – handle big endian
 – handle gcov and ftrace by disabling them before compilling the PIE
 – Get the alignment from the original ELF to ensure the PIE is
   properly aligned in SRAM.
 – stop using fncpy
 – rebased on v4.7-rc1

 

https://lkml.org/lkml/2016/6/28/989

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