xv6: a simple, Unix-like teaching operating system

Description

Contents Foreword and acknowledgements 0: Operating system interfaces Processes and memory I/O and File descriptors Pipes File system Real world 1: Operating system organization Abstracting physical resources User mode, kernel mode, and system calls Kernel organization Process overview Code: the first address space Code: creating the first process Code: Running the first process The first system call: exec Real world Exercises 2: Page tables Paging hardware Process address space Code: creating an address space Physical memory allocation Code: Physical memory allocator User part of an address space Code: sbrk Code: exec Real world Exercises 3: Traps, interrupts, and drivers Systems calls, exceptions, and interrupts X86 protection Code: The first system call Code: Assembly trap handlers Code: C trap handler Code: System calls Code: Interrupts Drivers Code: Disk driver Real world Exercises 4: Locking Race conditions Code: Locks Code: Using locks Deadlock and lock ordering Interrupt handlers Instruction and memory ordering Sleep locks Limitations of locks Real world Exercises 5: Scheduling Multiplexing Code: Context switching Code: Scheduling Code: mycpu and myproc Sleep and wakeup Code: Sleep and wakeup Code: Pipes Code: Wait, exit, and kill Real world Exercises 6: File system Overview Buffer cache layer Code: Buffer cache Logging layer Log design Code: logging Code: Block allocator Inode layer Code: Inodes Code: Inode content Code: directory layer Code: Path names File descriptor layer Code: System calls Real world Exercises 7: Summary A: PC hardware Processor and memory I/O B: The boot loader Code: Assembly bootstrap Code: C bootstrap Real world Exercises Index