0x00, "misaligned fetch"
0x01, "fetch access"
0x02, "illegal instruction"
0x03, "breakpoint"
0x04, "misaligned load"
0x05, "load access"
0x06, "misaligned store"
0x07, "store access"
0x08, "user_ecall"
0x09, "supervisor_ecall"
0x0A, "virtual_supervisor_ecall"
0x0B, "machine_ecall"
0x0C, "fetch page fault"
0x0D, "load page fault"
0x0F, "store page fault"
0x12, "software check fault"
0x13, "hardware error fault"
0x14, "fetch guest page fault"
0x15, "load guest page fault"
0x16, "virtual instruction"
0x17, "store guest page fault"