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Implements a separate syscall handler for ldelf to decouple it from user
TAs and enable using it for all TSs. The calling convention is the same
as for utee_* syscalls. To distinguish between the different SVCs, the
syscall handler pointer is updated before entering ldelf and restored
after returning. The step of opening a system PTA session and invoking
the commands there is eliminated, the necessary functionality is
implemented in the ldelf syscall functions.
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
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