Function riscv_atomic_emulation_trap::atomic_emulation

pub unsafe fn atomic_emulation(pc: usize, frame: &mut [usize; 32]) -> bool

Takes the program counter address that triggered the exception and an array of registers at point of exception with PLATFORM_REGISTER_LEN length. Returns true if the instruction was atomic and was emulated, false otherwise.

Safety

This function is supposed to be called right after the instruction caused an exception. Thus, it assumes that the program counter is valid and points to a valid instruction. It also assumes that all the user registers were correctly saved and sorted in a trap frame.