riscv1111

Results 2 issues of riscv1111

![b5059718bf132f513e09689f8bef2ad](https://github.com/chipsalliance/riscv-dv/assets/147490773/d904dbb2-0047-46b1-855b-b04829f051a6)

Use spike to simulate random instruction flow, open the log and find that the result is stuck in an infinite loop.log display 4.exception trap_supervisor_ecall , epc 0x00000000000005ae;>>>>$xrv64i2p1_m2p0_a2p1_f2p2_d2p2_zicsr2p0_zifencei2p0_zmmul1p0;6.0x0000000080013000 (0x0400006f) j pc+...