User applications run in User Mode (U-Mode), while the kernel runs in Supervisor Mode (S-Mode). When a user app needs kernel services (like printing text), it triggers a (System Call). The rCore kernel handles this by saving the user context, switching to kernel mode, processing the request, and restoring the context.
The documentation is typically structured into chapters that represent the progressive stages of kernel development: rcore documentation
[memory] kernel_base = "0x80200000" heap_size = "32MB" User applications run in User Mode (U-Mode), while
In a world where security is paramount, the rCore documentation provides a blueprint for "Safe OS" development. It proves that the performance overhead of Rust is negligible compared to the massive gains in reliability at the kernel level. For any developer looking to master systems programming, rCore serves as a rigorous and rewarding roadmap. The documentation is typically structured into chapters that
Setting up SV39 page tables to enable virtual memory and hardware-enforced isolation.
A: Add to syscall.rs , assign a new ID, and update the handler match arm.
make debug # In another terminal: riscv64-unknown-elf-gdb target/rcore.elf (gdb) target remote :1234 (gdb) b handle_trap (gdb) c