Questions regarding the necessity of ecall functions inside snake.edl

[AlexYaoRuihao]

Hello! @djwessel I was reading the snake source code and had a questions regarding the ecall functions inside snake.edl. So in the main.cpp, which is the untrusted app gateway, located at /snake the only ECALL entry point is public void ecall_start_game(); I was wondering if it's necessary to write all other ecall functions like void ecall_speed_up([in, out] struct screen_t* screen, [in, out] struct snake_t* snake);, void ecall_setup_level_on_start([in, out] struct screen_t* screen, [in, out] struct snake_t* snake);, etc inside edl file as we are not really calling them from the untrusted application. They are more sort of like helper functions on the trusted part. Please correct me if I'm wrong. Any response is appreciated!

[djwessel]

Hey @AlexYaoRuihao, to be honest, it has been a long time since I worked on this project, and it was just a part of a course in university. I haven't really worked with SGX since, so I don't think it would be fair for me to give you a potentially wrong answer.