genode/repos
Stefan Kalkowski 040cd95580 noux: fix context-area re-initialization in fork
With commit e74b53d5dd the fork semantic in noux
changed slightly, and broke platforms like hw & sel4, where the UTCB is mapped
directly into the thread's context area. The change moved the re-initialization
to a point where the new noux process' thread stack-pointer was already switched
back to the context area. But to re-initialize the context area RPC calls must
be done, and the UTCB must be used therefore. On the other side the UTCB is
found implicitly by the stack-pointer, whereby a stack-pointer located in the
context-area refers to a UTCB that is expected to reside in the context-area
as well. But the UTCB gets overlayed inside the context area by the
context-area's re-initialization - we've come round in a circle.

This commit rolls back the move of the re-initialization routine. To preserve
the intention of the original commit, the context-area location is stored in
a static variable, so that the Native_config API is not needed anymore.

Fix #1851
2016-01-26 16:20:36 +01:00
..
base hw: enable SMP for ARM Cortex A9 2016-01-26 16:20:18 +01:00
base-fiasco base: use mmio framework for multiboot handling 2015-11-04 14:09:26 +01:00
base-foc base: use mmio framework for multiboot handling 2015-11-04 14:09:26 +01:00
base-hw hw: enable SMP for ARM Cortex A9 2016-01-26 16:20:18 +01:00
base-linux base-linux: remove get_pid debug helper 2015-12-21 09:22:40 +01:00
base-nova nova: propagate bdf for assign_pci properly 2016-01-13 14:57:02 +01:00
base-okl4 safeguard the synchronized allocator template 2015-09-30 12:20:39 +02:00
base-pistachio base: use mmio framework for multiboot handling 2015-11-04 14:09:26 +01:00
base-sel4 Fix build and execution of test/sel4 2015-10-06 12:18:56 +02:00
dde_bsd dde_bsd: always advance play position 2015-11-29 18:17:09 +01:00
dde_ipxe x86: support dynamic upgrades for platform driver 2015-11-29 18:17:02 +01:00
dde_linux intel_fb: remove x201 workaround 2016-01-13 14:58:01 +01:00
dde_rump Remove Genode namespace from File_system 2016-01-08 14:48:52 +01:00
demo liquid_fb: generate periodic sync events 2015-12-10 13:16:27 +01:00
gems decorator_stress: explicitly generate long values 2015-12-17 10:38:19 +01:00
hello_tutorial hello: condition config for various base platforms 2015-06-22 14:43:40 +02:00
libports x86emu: download from xorg.freedesktop.org 2016-01-26 16:20:36 +01:00
os x86: avoid warning if memory is attached twice 2016-01-13 14:59:05 +01:00
ports noux: fix context-area re-initialization in fork 2016-01-26 16:20:36 +01:00
ports-foc disable network tests on platforms w/o nic driver 2015-10-28 15:06:23 +01:00
README codezero: remove support from Genode (fix #1668) 2015-09-09 15:14:29 +02:00

                      ===============================
                      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 hardware
    without the need for a separate kernel. The kernel functionality is
    included in core.
    See [http://genode.org/documentation/platforms/hw]

  :'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'.