Function riscv_rt::start_trap_rust

#[link_section = ".trap.rust"]
#[export_name = "_start_trap_rust"]
pub unsafe extern "C" fn start_trap_rust(trap_frame: *const TrapFrame)

Trap entry point rust (_start_trap_rust)

scause/mcause is read to determine the cause of the trap. XLEN-1 bit indicates if it’s an interrupt or an exception. The result is examined and ExceptionHandler or one of the core interrupt handlers is called.

Safety

This function must be called only from assembly _start_trap function. Do NOT call this function directly.