mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-20 06:07:59 +00:00
0106045bad
The modular lx_kit seperates the required back end functionality of the Linux emulation environment from the front end. Thereby each driver can reuse specific parts or supply more suitable implementations by itself. It is used to reduce the amount of redundant code in each driver. The lx_kit is split into several layers whose structure is as follows: The first layer in _repos/dde_linux/src/include/lx_emul_ contains those header files that provide the structural definitions and function declarations of the Linux API, e.g. _errno.h_ provides all error code values. The second layer in _repos/dde_linux/src/include/lx_emul/impl_ contains the implementation of selected functions, e.g. _slab.h_ provides the implementation of 'kmalloc()'. The lx_kit back end API is the third layer and provides the _Lx::Malloc_ interface (_repos/dde_linux/src/include/lx_kit/malloc.h_) which is used to implement 'kmalloc()'. There are several generic implementations of the lx_kit interfaces that can be used by a driver. A driver typically includes a 'lx_emul/impl/xyz.h' header once directly in its lx_emul compilation unit. The lx_kit interface files are only included in those compilation units that use or implement the interface. If a driver wants to use a generic implementation it must add the source file to its source file list. The generic implementations are located in _repos/dde_linux/src/lx_kit/_. The modular lx_kit still depends on the private _lx_emul.h_ header file that is tailored to each driver. Since the lx_kit already contains much of the declarations and definitions that were originally placed in these private header files, those files can now ommit a large amount of code. Fixes #1974. |
||
---|---|---|
.. | ||
base | ||
base-fiasco | ||
base-foc | ||
base-hw | ||
base-linux | ||
base-nova | ||
base-okl4 | ||
base-pistachio | ||
base-sel4 | ||
dde_bsd | ||
dde_ipxe | ||
dde_linux | ||
dde_rump | ||
demo | ||
gems | ||
hello_tutorial | ||
libports | ||
os | ||
ports | ||
ports-foc | ||
README |
=============================== Genode source-code repositories =============================== This directory contains the source-code repositories of the Genode OS Framework. Each sub directory has the same principle layout as described in the build-system manual: :Build-system manual: [http://genode.org/documentation/developer-resources/build_system] The build system uses a configurable selection of those reposities to obtain the source codes for the build process. The repositories are not independent but build upon of each other: :'base': This directory contains the source-code repository of the fundamental frameworks and interfaces of Genode. Furthermore, it contains the generic parts of core. :'base-<platform>': These directories contain platform-specific source-code repositories complementing the 'base' repository. The following platforms are supported: :'linux': Linux kernel (both x86_32 and x86_64) :'nova': NOVA hypervisor developed at University of Technology Dresden See [http://genode.org/documentation/platforms/nova] :'foc': Fiasco.OC is a modernized version of the Fiasco microkernel with a completely revised kernel interface fostering capability-based security. It is not compatible with L4/Fiasco. See [http://genode.org/documentation/platforms/foc] :'hw': The hw platform allows the execution of Genode on bare ARM and x86 hardware without the need for a separate kernel. The kernel functionality is included in core except in the special case of the Muen separation kernel. See [http://genode.org/documentation/platforms/hw] and [http://genode.org/documentation/platforms/muen] :'okl4': OKL4 kernel (x86_32 and ARM) developed at Open-Kernel-Labs. See [http://genode.org/documentation/platforms/okl4] :'pistachio': L4ka::Pistachio kernel developed at University of Karlsruhe. See [http://genode.org/documentation/platforms/pistachio] :'fiasco': L4/Fiasco kernel developed at University of Technology Dresden. See [http://genode.org/documentation/platforms/fiasco] :'sel4': seL4 microkernel developed at NICTA/General Dynamics See[https://sel4.systems/] :'os': This directory contains the non-base OS components such as the init process, device drivers, and basic system services. :'demo': This directory contains the source-code repository of various services and applications that we use for demonstration purposes. For example, a graphical application launcher called Launchpad and the Scout tutorial browser. :'hello_tutorial': Tutorial for creating a simple client-server scenario with Genode. This repository includes documentation and the complete source code. :'libports': This source-code repository contains ports of popular open-source libraries to Genode, most importantly the C library. The repository contains no upstream source code but means to download the code and adapt it to Genode. For instructions about how to use this mechanism, please consult the README file at the top level of the repository. Among the 3rd-party libraries are Qt5, libSDL, freetype, Python, ncurses, Mesa, and libav. :'dde_linux': This source-code repository contains the device driver environment for executing Linux device drivers natively on Genode. Currently, this repository hosts the USB stack. :'dde_ipxe': This source-code repository contains the device-driver environment for executing drivers of the iPXE project. :'dde_bsd': This source-code repository contains the device-driver environment for drivers of the OpenBSD operating system. :'dde_rump': This source-code repository contains the port of rump kernels, which are used to execute subsystems of the NetBSD kernel as user level processes. The repository contains a server that uses a rump kernel to provide various NetBSD file systems to Genode. :'ports': This source-code repository hosts ports of 3rd-party applications to Genode. The repository does not contain upstream source code but provides a mechanism for downloading the official source distributions and adapt them to the Genode environment. The used mechanism is roughly the same as used for the 'libports' repository. Please consult 'libports/README' for further information. :'ports-<platform>': These platform-specific source-code repositories contain software that capitalizes special features of the respective kernel platform. For the Fiasco.OC platform, 'ports-foc' hosts a port of the L4Linux kernel. For further information, please refer to the README file at the top level of the respective repository. :'gems': This source-code repository contains Genode applications that use both native Genode interfaces as well as features of other high-level repositories, in particular shared libraries provided by 'libports'.