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With the update to GCC 10 the compiler used to warn when using the internet checksum functions on packet classes (like in Net::Ipv4_packet::update_checksum): warning: converting a packed ‘Net::[PACKET_CLASS]’ pointer (alignment 1) to a ‘const uint16_t’ {aka ‘const short unsigned int’} pointer (alignment 2) may result in an unaligned pointer value Apparently, the 'packed' attribute normally used on packet classes sets the alignment of the packet class to 1. However, for the purpose of the internet-checksum functions, we can assume that the packet data has no alignment. This is expressed by casting the packet-object pointer to a pointer of the new packed helper struct 'Packed_uint16' that contains only a single uint16_t member before handing it over to the checksum function (instead of casting it to a uint16_t pointer). Ref #4109 |
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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 | ||
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: [https://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 :'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. :'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. :'okl4': OKL4 kernel (x86_32 and ARM) developed at Open-Kernel-Labs. :'pistachio': L4ka::Pistachio kernel developed at University of Karlsruhe. :'fiasco': L4/Fiasco kernel developed at University of Technology Dresden. :'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. :'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'.