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H A Datomic_template.hec603b5584fa71213ef8f324fe89e4b27cc9d2bc Tue Nov 14 09:34:20 UTC 2017 Richard Henderson <richard.henderson@linaro.org> tcg: Record code_gen_buffer address for user-only memory helpers

When we handle a signal from a fault within a user-only memory helper,
we cannot cpu_restore_state with the PC found within the signal frame.
Use a TLS variable, helper_retaddr, to record the unwind start point
to find the faulting guest insn.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
H A Duser-exec.cec603b5584fa71213ef8f324fe89e4b27cc9d2bc Tue Nov 14 09:34:20 UTC 2017 Richard Henderson <richard.henderson@linaro.org> tcg: Record code_gen_buffer address for user-only memory helpers

When we handle a signal from a fault within a user-only memory helper,
we cannot cpu_restore_state with the PC found within the signal frame.
Use a TLS variable, helper_retaddr, to record the unwind start point
to find the faulting guest insn.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
H A Dcputlb.cec603b5584fa71213ef8f324fe89e4b27cc9d2bc Tue Nov 14 09:34:20 UTC 2017 Richard Henderson <richard.henderson@linaro.org> tcg: Record code_gen_buffer address for user-only memory helpers

When we handle a signal from a fault within a user-only memory helper,
we cannot cpu_restore_state with the PC found within the signal frame.
Use a TLS variable, helper_retaddr, to record the unwind start point
to find the faulting guest insn.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>