0.21

New features

• Full Windows 7 compatibility
• futex: New event-based implementation which support win7
• futex: Add support for FUTEX_REQUEUE and FUTEX_CMP_REQUEUE
• main: Support command line options parsing
• main: Add help and usage messages
• dbt: Redesign x86 decoding table
• dbt: Optimize push/pop opcode generation
• dbt: Support --dbt-trace and --dbt-trace-all options
• pipe: Correct poll() support
• pipe: Add O_NONBLOCK support
• process: Add CLONE_PARENT_SETTID and CLONE_CHILD_CLEARTID support
• log: Increase time precision for logging
• fork: Significant performance improvements

Bug fixes

• sig: Reset sigactions at execve()
• dbt: Do not patch instruction if dbt just flushed in dbt_find_direct()
• dbt: Fix several instruction descriptions
• dbt: Stop code generation when code cache space is exhausted
• str: Fix codepoint transformation range off by one
• main: Fix ENV macros off by one
• list: Fix list_remove() when list contains only one element

0.2

New features

• Multi-threading: add clone(CLONE_THREAD) and futex() (Windows 8+ only)
• In-process signal handling: rt_sigaction, rt_sigprocmask, rt_sigsuspend
• Generation of SIGINT, SIGCHLD, and SIGWINCH signals
• process_wait(): WNOHANG
• Remove build dependency on dlltool
• eventfd: Added
• /dev/dsp: Added
• vfs: Add ppoll() and pselect6()
• vfs: Initial epoll() implementation
• vfs: Implement basic nodes in /proc, /sys and /dev file systems
• vfs: Support inter-process information query in /proc/[pid] file system
• vfs: Add proper error messages for missing operations in file vtable
• console: Alternate screen buffer
• console: DEC special graphics charset
• console: Swap In and Swap Out characters
• console: DA2 query
• console: Initial UTF-8 support
• console: CSI [ h' andCSI [ l' supports multiple modes
• console: Support character attributes 39 (default fg) and 49 (default bg)
• Use red black tree for virtual address space management in mm and dbt
• mmap(): Add MAP_SHARED support
• clock_gettime(): CLOCK_MONOTONIC_COARSE and CLOCK_MONOTONIC_RAW
• dbt: Add translation rules for FXSAVE and FXRSTOR instructions
• dbt: Support code unloading
• ioctl: FIOCLEX, FIONCLEX, FIONBIO
• socket: Support POLLHUP events
• socket: Add stat() function call
• sockopt: SO_SNDBUF, SO_RCVBUF, SO_LINGER, SO_REUSEADDR
• Add getrandom()
• execve(): Recover on file opening failure
• rename(): Allow replacing files in use
• flog: Rewrite log viewer using custom control
• flog: Improve logging performance substantially
• flog: Highlight warnings/errors
• flog: Add basic keyboard shortcuts

Bug fixes

• console: Fix initial termios.c_flag
• console: Fix read() on VTIME > 0 should at least read one character
• time(): Fix time calculation
• readlink(): Fix fd leak
• dbt: Fix instruction definition for BTR (0F B3)
• getdents(): Fix not working in /dev
• vfs_pselect6(): Clear fd set before returning an error
• winfs: Fix file pointer changed in pread() and pwrite()

0.1

The initial release.