x86_64

• Add a new OffsetPageTable mapper type (#83)

• Add instructions::bochs_breakpoint and registers::read_rip functions (#79)
• Mark all single instruction functions as #[inline] (#79)
• Update GDT docs, add user_data_segment function and WRITABLE flag (#78)
• Reexport MappedPageTable on non-x86_64 platforms too (#82)

• Add ring-3 flag to GDT descriptor (#77)

• Breaking: Port::read and PortReadOnly::read now take &mut self instead of &self (#76).

• Breaking: Make the FrameAllocator unsafe to implement. This way, we can force the implementer to guarantee that all frame allocators are valid. See #69 for more information.

• Use cast crate instead of less general usize_conversions crate.

• Update dependencies to latest versions (fix #67)

• Add PortReadOnly and PortWriteOnly types in instructions::port module (#66).

• Update documentation of MappedPageTable: Require that passed level_4_table is valid.

• Add PageTable::{iter, iter_mut} functions to iterate over page table entries.

Breaking

• The random module is now a submodule of the instructions module.
• The structures::paging module was split into several submodules:
  • The NotGiantPageSize, PageRange, and PageRangeInclusive types were moved to a new page submodule.
  • The PhysFrameRange and PhysFrameRangeInclusive types were moved to a new frame submodule.
  • The FrameError and PageTableEntry types were moved to a new page_table submodule.
  • The MapperFlush, MapToError, UnmapError, and FlagUpdateError types were moved to a new mapper submodule.
• The structures::paging module received the following changes:
  • The Mapper::translate_page function now returns a Result with a new TranslateError error type.
  • The NotRecursivelyMapped error type was removed.
• The instructions::int3 function was moved into the instructions::interrupts module.
• Removed some old deprecated functions.
• Made modifications of the interrupt stack frame unsafe by introducing a new wrapper type and an unsafe as_mut method.

Other

• Added a new structures::paging::MapperAllSizes trait with generic translation methods and implement it for MappedPageTable and RecursivePageTable.
• Added a new structures::paging::MappedPageTable type that implements the Mapper and MapperAllSizes traits.
• Added a software_interrupt macro to invoke arbitrary int x instructions.
• Renamed the ExceptionStackFrame type to InterruptStackFrame.

• Add RdRand::get_u{16, 32, 64} methods
• Deprecate RdRand::get because it does not check for failure
• Make RdRand Copy

• Add support for the RdRand instruction (random number generation)

Breaking

• Make Mapper::map_to and Mapper::identity_map unsafe because it is possible to break memory safety by passing invalid arguments.
• Rename FrameAllocator::alloc to allocate_frame and FrameDeallocator::dealloc to deallocate_frame.
• Remove From<os_bootinfo::FrameRange> implementation for PhysFrameRange
  • The os_bootinfo crate is no longer used by the bootloader crate.
  • It is not possible to provide an implementation for all os_bootinfo versions.

Other

• Update to 2018 edition

• Add a SIZE constant to the Page type
• Add two interrupt tests to the testing sub-crate