Add exception handler to edger8r. #222
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Add a exception_handler to the edger8r. If any function in .edl file is marked as "exception_handler", it should be set the "is_exception" field in the ecall table. This is used for users to set their own exception, like signal handler. Signed-off-by: Chong Cai<chongc@google.com>
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What is the motivation to high light the exception function in the edl file? |
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This is used when a user what to register their own exception handler. They can design their own exception handling that enters an enclave by highlighting the ecall as "exception_handler". Another PR has the changed code that deals with this flag (#223 ). |
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The alternative solution is, when the application get the SIGCHLD, SIGUSR1, SIGRTMIN + n, etc, the application can use another free thread to handle this exception. |
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Add a exception_handler to the edger8r. If any function in .edl file is marked
as "exception_handler", it should be set the "is_exception" field in the ecall
table. This is used for users to set their own exception, like signal
handler.