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H A Dsyscall_defs.hdiff 7f047de18cf6cd51915d4fdbe1a7e66c38b45e98 Tue Oct 31 07:53:52 CDT 2017 Richard Henderson <rth@twiddle.net> linux-user: Restrict usage of sa_restorer

Reading and writing to an sa_restorer member that isn't supposed to
exist corrupts user memory. Introduce TARGET_ARCH_HAS_SA_RESTORER,
similar to the kernel's __ARCH_HAS_SA_RESTORER.

Reported-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
H A Dsignal.cdiff 7f047de18cf6cd51915d4fdbe1a7e66c38b45e98 Tue Oct 31 07:53:52 CDT 2017 Richard Henderson <rth@twiddle.net> linux-user: Restrict usage of sa_restorer

Reading and writing to an sa_restorer member that isn't supposed to
exist corrupts user memory. Introduce TARGET_ARCH_HAS_SA_RESTORER,
similar to the kernel's __ARCH_HAS_SA_RESTORER.

Reported-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>