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| Developer | Return Infinity |
|---|---|
| Written in | Assembly |
| Working state | Current |
| Source model | Open source |
| Initial release | 2008 |
| Latest release | 1.0.0 / November 13, 2017[1] |
| Marketing target | HPCs, HTC, Cloud computing |
| Available in | English |
| Platforms | x86-64 |
| Kernel type | Exokernel, SASOS |
| Userland | Unknown |
| Default user interface | Command-line |
| License | BSD License[2] |
| Official website | www |
BareMetal is an exokernel-based single address space operating system (OS) created by Return Infinity.
It is written in assembly to achieve high-performance computing with minimal footprint[3][4] with a Just Enough Operating System (JeOS) approach.[5] The operating system is primarily targeted towards virtualized environments for cloud computing, or HPCs due to its design as a lightweight kernel (LWK). It could be used as a unikernel.
It was inspired by another OS written in assembly, MikeOS,[2] and it is a current-day example of an operating system that is not written in C or C++, nor based on Unix-like kernels.[6]
Multitasking on BareMetal is unusual for operating systems in this day and age. BareMetal uses an internal work queue that all CPU cores poll. A task added to the work queue will be processed by any available CPU core in the system and will execute until completion, which results in no context switch overhead.[8]
An API is documented[9] but, in line with its philosophy, the OS does not enforce entry points for system calls (e.g.: no call gates or other safety mechanisms).
BareMetal OS has a build script to pull the latest code, make the needed changes, and then compile C code using[10] the Newlib C standard library.[11]
A mostly-complete C++11 Standard Library was designed and developed for working in ring 0.[12] The main goal of such library is providing, on a library level, an alternative to hardware memory protection used in classical OSes, with help of carefully designed classes.[13]
A Rust program demonstration was added to the programs in November 2014, demonstrating the ability to write Rust programs for BareMetal OS.[14]
A TCP/IP stack was the #1 feature request.[15] A port of lwIP written in C was announced in October 2014.[16]
minIP,[17] a minimalist IP stack in ANSI C able to provide enough functionalities to serve a simple static webpage, is being developed as a proof of concept to learn the fundamentals in preparation for an x86-64 assembly re-write planned for the future.
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By: Wikipedia.org
Edited: 2021-06-18 18:47:57
Source: Wikipedia.org
