MerlionOS v4.0.0 — Real I/O, ELF Loading, Full Demo

MerlionOS v4.0.0 — Real I/O

Born for AI. Built by AI. — 生于AI，成于AI

Stats

• 58 source modules, ~9,700 lines of Rust
• 90+ shell commands
• Real hardware I/O: virtio-blk, virtio-net, ELF loading

What's New

Real Virtio-blk Disk I/O

Actual sector read/write through QEMU's virtio-blk device:

• PCI BAR0 → I/O port discovery
• Virtqueue with descriptor chains
• diskread / diskwrite commands
• make run-disk to attach a real disk image

Real ELF Loading

Build, store, load, and execute real ELF-64 binaries:

• mkelf hello → builds ELF, writes to disk
• loadelf 100 174 → reads from disk, maps segments, executes in ring 3
• Full ELF-64 parser + program header mapping

Real Virtio-net

Ethernet frame construction and transmission:

• PCI probe, BAR0, RX/TX virtqueues
• Real MAC address from device config
• arpreq sends real ARP frames
• rawping sends real ICMP echo with IP checksums
• make run-full for disk + network

Full System Demo

Type demo to see an automated walkthrough of all capabilities:
system info → hardware → memory → VFS → multitasking → modules →
AI features → networking → diagnostics → self-tests.

Quick Start

make build && make run-full    # disk + network

Then type: demo