[PATCH 9/9] ARM: zImage: make sure no GOTOFF relocs are used with .bss symbols
tony at atomide.com
Fri Apr 29 03:11:41 EDT 2011
* Nicolas Pitre <nico at fluxnic.net> [110428 15:47]:
> From: Nicolas Pitre <nicolas.pitre at linaro.org>
> To be able to relocate the .bss section at run time independently from
> the rest of the code, we must make sure that no GOTOFF relocations are
> used with .bss symbols. This usually means that no global variables can
> be marked static unless they're also const.
> To enforce this, suffice to fail the build whenever a private symbol
> is allocated to .bss and list those symbols for convenience.
> The user_stack and user_stack_end labels in head.S were converted into
> non exported symbols to remove false positives.
> Signed-off-by: Nicolas Pitre <nicolas.pitre at linaro.org>
Marking something static in uncompress.h now fails with this patch, so:
Tested-by: Tony Lindgren <tony at atomide.com>
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