Mapping all memory mapped device region

.cargo/config.toml

@@ -35,10 +35,7 @@ qemu-system-riscv64
 # runner = "../../qemu/build/qemu-system-riscv64 -S -gdb tcp::10000 -d int,in_asm,cpu_reset,mmu,page,guest_errors -machine virt -bios none -nographic -m 2G -initrd vmlinux_debug -drive file=rootfs.img,format=raw,id=hd0,if=none -device virtio-blk-pci,drive=hd0,iommu_platform=true,disable-legacy=on -append root=/dev/vda,rw,console=ttyS0 -device riscv-iommu-pci -kernel"
 # memo: maintenance packet Qqemu.PhyMemMode:1
 
-rustflags = [
-  "-C", "link-arg=-Tmemory.x",
-  "-C", "target-feature=+h",
-]
+rustflags = ["-C", "link-arg=-Tmemory.x", "-C", "target-feature=+h"]
 
 [build]
 target = "riscv64imac-unknown-none-elf"

extension_manager/src/lib.rs

@@ -21,6 +21,7 @@ pub fn handle_virtual_inst(_input: TokenStream) -> TokenStream {
             OpcodeKind::Zicsr(_) => {
                 let csr_num = fault_inst.rs2.unwrap() as u16;
                 #(#csr_field_arms)*
+                unimplemented!("unhandled CSRs: {csr_num:#x}");
             }
             _ => unreachable!(),
         }