Crate os

The main module and entrypoint

The operating system and app also starts in this module. Kernel code starts executing from entry.asm, after which rust_main() is called to initialize various pieces of functionality clear_bss(). (See its source code for details.)

We then call println! to display Hello, world!.

Modules

• board 🔒
• console 🔒
  SBI console driver, for text output
• lang_items 🔒
  The panic handler
• logging 🔒
  Global logger
• sbi 🔒
  SBI call wrappers

Macros

• print
  Print! to the host console using the format string and arguments.
• println
  Println! to the host console using the format string and arguments.

Functions

• clear_bss
  clear BSS segment
• rust_main
  the rust entry-point of os