clang emulator/main.c -o emulator.exe -std=c11 -D_CRT_SECURE_NO_WARNINGS -I.
clang emulator/hart_test.c -o hart_test.exe -std=c11 -D_CRT_SECURE_NO_WARNINGS -I.

clang --target=riscv32 -march=rv32i -e _main -nostdlib main.asm -o main.bin