This patch extends the RAM session interface with the ability to
allocate DMA buffers. The client specifies the type of RAM dataspace to
allocate via the new 'cached' argument of the 'Ram_session::alloc()'
function. By default, 'cached' is true, which correponds to the common
case and the original behavior. When setting 'cached' to 'false', core
takes the precautions needed to register the memory as uncached in the
page table of each process that has the dataspace attached.
Currently, the support for allocating DMA buffers is implemented for
Fiasco.OC only. On x86 platforms, it is generally not needed. But on
platforms with more relaxed cache coherence (such as ARM), user-level
device drivers should always use uncacheable memory for DMA transactions.
When creating a 'Child' object with an already active entrypoint,
session requests may arrive as soon as the '_process' is created. We
have to make sure that at least all parts of the 'Child' object needed
for serving 'session' requests are constructed. This is particularly
important for the '_policy' member.
The sysio's struct fields need to be properly set on each syscall. This
fixes a bug where the wrong fd is used after the first sendto syscall.
Also the minimal buffer size calculation uses the wrong size.
Fixes#235.
When sigma0 runs on a lower priority than the rest of the threads in the
system it might come to the point that while answering a page fault or
I/O memory area request the timeslice of the caller (core-pager) gets
fully consumed. As long as other threads are still executable and don't block
sigma0 won't do progress anymore, because it runs at the lowest priority.
This commit simply sets sigma0's priority to the highest in the system.
When invoking the bootstrap build in the L4RE build-system to create
a single elf-image containing all needed files to boot a scenario, don't
use the 'ENTRY' variable, but 'E' variable instead. Otherwise 'ENTRY'
might get overridden (dependent on the make-version). Moreover, using
'E' seems to be the way L4Re is expecting it has to be invoked.
Fixes#226
We are using bison to generate certain files when preparing the libc.
However the yacc(1) wrapper script is used instead of calling bison
directly which does not work if bison is not installed but the original
yacc(1).
Fixes#225. Fixes#227.
When core requests all RAM from sigma0 it normally unmaps page 0 so that
null-pointer dereferences are detected by a pagefault. The unmap syscall
in the Fiasco.OC base platform was used insufficiently in this particular
case.
The media player has been traded for the persistent storage topic
because the latter one naturally builds upon the just recently added
file-system interface. Furthermore, we defer the live CD until July as
we realized that we first need to overhaul low-level components such as
USB before the new live system can be expected to work as intended.
modexp512 and rc4-md5 code were missing for x86_64. The files are now
generated on openssl-prepare and will be used when building for x86_64.
Fixes#224.
By now the gmp-library works builds on x86/32bit only. The mpfr library
depends on gmp, so make both library dependent on the corresponding platform
variables. Look at the discussion of issue #135.
Use terminals for LOG output of L4Android scenario, as well as a terminal
session for the Linux terminal. Now everything can be used interactively
on one screen: the Linux/Android framebuffer, the Linux console, and the
LOG-output of L4Linux.
Introduce process global spin-lock for Cap_index's reference-counter
to avoid non-atomic increment/decrement of the counter. Here, we don't
use a static Spinlock object, because it's constructor wouldn't be
initialized before used for the first time.
The following fixes partly solve the problems triggered by the noux stress
test introduced by nfeske in issue #208.
* The check whether a capability exists in the Cap_map, and its insertion,
has to be done atomically
* While removing a capability it is looked up in the Cap_map via its id,
check whether the found capability pointer is the same like the looked up,
otherwise the wrong capability gets freed
* When a local capability is un- resp. marshalled, only the local pointer
gets transfered, not the redundant capability id
* Introduce several assertions and warnings to facilitate debugging
Some source files do not build with -O0 due to conflicting register
allocation and inline assembler constrains. We enforce optimization (O2)
for these files.
Also, I reduced the noise from warning messages induced by lazy handling
of "assignment discards ‘const’ qualifier" and "passing argument from
incompatible pointer type" in third-party sources.
This patch implements a simple Qt-based media player which is actually a
graphical user interface for the SDL-based 'avplay' media player from
'libav'. It starts 'avplay' as a child and shows its graphical output in a
'QNitpickerViewWidget'. The widgets for controlling the player state send
the according keyboard and mouse input events to 'avplay'.
The 'qt_avplay' player supports the following configuration options:
<mediafile name="..."/>
-> name of the media file to play
<framebuffer_filter name="..." ram_quota="..."/> (may appear multiple times)
-> name of a framebuffer filter service to filter the video output
Fixes#222.
This commit contains the initial port of OpenSSL to Genode. It certainly
needs some more work to get things straight - it compiles fine but does
not work because of a NULL pointer exception.
Noux/net adds network functionality to noux. Currently most basic
network related system calls including 'accept', 'bind', 'connect',
'listen', 'recv', 'send', 'shutdown', and 'socket' are implemented by
wrapping lwip's network functions.
At the moment noux/net is rarely usable, though it is possible to
use netcat to send a message to a netcat server which listen on a
given port in noux/net.
With this patch the SDL-based 'avplay' media player, which is part of
'libav', can be built. The run script expects a media file named
'mediafile' in the 'bin' directory.
Fixes#216.
