From: Matthew Leach <matthew.leach@arm.com>
Date: Fri, 11 Oct 2013 13:52:14 +0000 (+0100)
Subject: arm64: big-endian: don't treat code as data when copying sigret code
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~54^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1d5ebaf8ccdd100f45042ce32c591867de04ac3;p=pandora-kernel.git

arm64: big-endian: don't treat code as data when copying sigret code

Currently the sigreturn compat code is copied to an offset in the
vectors table. When using a BE kernel this data will be stored in the
wrong endianess so when returning from a signal on a 32-bit BE system,
arbitrary code will be executed.

Instead of declaring the code inside a struct and copying that, use
the assembler's .byte directives to store the code in the correct
endianess regardless of platform endianess.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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