Commit Graph

124 Commits

Author SHA1 Message Date
Norman Feske
65c4246f95 base/env: Implementation of 'Expanding_parent' 2013-10-14 09:45:14 +02:00
Norman Feske
ae40cb545c base: Unify 'Platform_env' across platforms 2013-10-05 12:44:36 +02:00
Stefan Kalkowski
339193a887 Linux: compile lx_hybrid_ctors test for correct ARCH
Fixes #900
2013-10-04 10:13:07 +02:00
Christian Helmuth
385b7cdd31 base-linux: revised region management
Revised region management detects region conflicts by using _soft_
mappings per default. Overmapping is activated for population of managed
dataspaces only. For more information see header documentation of
base-linux/src/base/env/rm_session_mmap.cc.

Fixes #883.
2013-09-26 15:07:08 +02:00
Christian Helmuth
f763e5ec2a Move main bootstrap to platform-specific object
To prevent multiple execution of main-bootstrap, I moved the code to a
statically initialized object. The reason for this change is that
_main() is exeuted twice when starting dynamic binaries. Now, the object
is part of the base-common library which is linked with ld.lib.so.
2013-09-26 15:00:16 +02:00
Christian Helmuth
a7c5417369 base-linux: ld.lib.so loads dynamic binaries
For ARM support on N900, commit 4a9b1c6 changed the process library to
start dynamic binaries directly depending on the Linux kernel to comply
to the interp section info ("ld.lib.so"). This seems not required on
more recent platforms or kernel versions and also introduced challenging
corner cases in region handling on Linux. Therefore, this commit
restores the original behavior.
2013-09-24 09:44:32 +02:00
Christian Prochaska
b0bfe6bfa7 base-linux: fix ELF dataspace execution
With this patch, if an ELF dataspace to be executed does not have a path
in the host file system, the dataspace content gets copied into a
temporary file whose path can be given to 'execve()'.

Fixes #879.
2013-09-23 14:26:00 +02:00
Christian Prochaska
3e8e55ec16 CPU affinity configuration fixes
- if no affinity was set for a new thread before calling
  Cpu_session::start(), the CPU session's affinity gets set for this
  thread
- documentation fix: <affinity_space> -> <affinity-space>

Fixes #873.
2013-09-02 19:43:36 +02:00
Josef Söntgen
32e3eee48c linux: add expanding Cpu_session_client 2013-08-15 09:22:48 +02:00
Norman Feske
149356f7ab core: TRACE service interface and implementation 2013-08-15 09:22:47 +02:00
Norman Feske
fe4a6d7d81 base: User-level tracing support 2013-08-14 18:43:19 +02:00
Norman Feske
a2b15349fd base: Add tracing support to CPU session interface 2013-08-13 17:27:40 +02:00
Christian Prochaska
fd11bd489e base: increase maximum file name length
This patch increases the maximum file name length to support
'qt5_qnitpickerviewwidget.lib.so'.

Issue #345.
2013-08-13 17:08:26 +02:00
Norman Feske
35723d813d core: evaluate CPU session affinity argument 2013-08-13 17:08:25 +02:00
Norman Feske
6d837c9e26 Attach affinity information to session requests
This patch extends the 'Parent::session()' and 'Root::session()'
functions with an additional 'affinity' parameter, which is inteded to
express the preferred affinity of the new session. For CPU sessions
provided by core, the values will be used to select the set of CPUs
assigned to the CPU session. For other services, the session affinity
information can be utilized to optimize the locality of the server
thread with the client. For example, to enable the IRQ session to route
an IRQ to the CPU core on which the corresponding device driver (the IRQ
client) is running.
2013-08-13 17:08:25 +02:00
Norman Feske
5fe29e8e4a Express affinities via Cartesian coordinates
This patch introduces new types for expressing CPU affinities. Instead
of dealing with physical CPU numbers, affinities are expressed as
rectangles in a grid of virtual CPU nodes. This clears the way to
conveniently assign sets of adjacent CPUs to subsystems, each of them
managing their respective viewport of the coordinate space.

By using 2D Cartesian coordinates, the locality of CPU nodes can be
modeled for different topologies such as SMP (simple Nx1 grid), grids of
NUMA nodes, or ring topologies.
2013-08-13 17:08:24 +02:00
Alexander Boettcher
4dd9172888 run: add success message to lx_hybrid_pthread_ipc 2013-07-11 12:44:24 +02:00
Christian Prochaska
c962240922 crt0 cleanup
- use the generic 'crt0.s' for Linux
- move the read-only '__dso_handle' definition into the '.text' section
- move the '__initial_sp' definition into the '.bss' section
- remove the '_main_utcb' definition

Part of #766.
2013-07-05 12:37:43 +02:00
Josef Söntgen
dad3f32d0b linux: thread name wrongly truncated by one byte
The terminating NUL char was not considerd in the calculation of
the space needed for storing the string.

Fixes #790.
2013-07-05 12:37:42 +02:00
Christian Prochaska
4a9b1c6aab base-linux: add ARM support
This patch introduces a new platform 'linux_arm' for building and running
Genode/Linux on an ARM device.

Known limitations:

- libc 'setjmp()'/'longjmp()' doesn't currently save/restore floating
  point registers

Fixes #746.
2013-05-24 14:55:37 +02:00
Alexander Boettcher
2a761c7fea run: extend genode_until_run by a spawn id
genode_until_run can be called now with a spawn id to able to reattach to a
spawned process (amt, serial output). Run scripts can now call genode_until_run
multiple times.
2013-05-08 09:42:44 +02:00
Norman Feske
c54fef9274 Add missing route to lx_uid.run 2013-05-07 21:56:07 +02:00
Norman Feske
0355591445 lx_hybrid: Safety check when freeing thread
Try to free the metadata of a thread only if created by Genode. The code
did not cause any actual problems. I just stumbled over the inconsistency
while reviewing the code.
2013-05-07 21:56:06 +02:00
Norman Feske
5d969cffaf base-linux: Fix condition in ~Reply_channel
Issue #717
2013-05-07 21:56:06 +02:00
Norman Feske
e39ff055ba base-linux: Fix use-after-free problem of ds fds
Fixes #717
2013-05-07 21:56:06 +02:00
Norman Feske
6f294eddc2 Fix warning about initializer of 'Local_addr'
Fixes #726
2013-05-06 11:11:03 +02:00
Christian Prochaska
a99193ad90 Rework the internal lock interface
With this patch, the 'futex' syscall gets used for blocking and unblocking
of threads in the Linux-specific lock implementation.

The 'Native_thread_id' type, which was previously used in the
lock-internal 'Applicant' class to identify a thread to be woken up,
was not suitable anymore for implementing this change. With this patch,
the 'Thread_base*' type gets used instead, which also has the positive
effect of making the public 'cancelable_lock.h' header file
platform-independent.

Fixes #646.
2013-02-25 22:14:21 +01:00
Norman Feske
26e8e0ebdd Add the 'cxx' lib in base.mk for 64-bit Linux
This is a follow-up fix for fae63f4fa9.
Thanks to Christian Prochaska for the patch.
2013-02-25 16:45:49 +01:00
Torsten Hilbrich
ab89304ffd base-linux: Don't busywait if lx_pollpid returns 0
This happened when I killed one of the genode clients which was
tracked via an expception_handler. In this case the wait4 syscall
returned 0 and the for(;;) was looped eternally. This caused an
100% CPU utilization for the core binary.
2013-02-25 16:45:49 +01:00
Torsten Hilbrich
257cf4800d Fixed some unused parameters warnings
They cause problems when using -Werror in your compilation.
2013-02-25 16:45:49 +01:00
Martin Stein
0f8803245a base: make signal framework usable for base-hw
ref #641
2013-02-22 20:28:28 +01:00
Norman Feske
fae63f4fa9 Merge base libraries into a single library
This patch simplifies the way of how Genode's base libraries are
organized. Originally, the base API was implemented in the form of many
small libraries such as 'thread', 'env', 'server', etc. Most of them
used to consist of only a small number of files. Because those libraries
are incorporated in any build, the checking of their inter-dependencies
made the build process more verbose than desired. Also, the number of
libraries and their roles (core only, non-core only, shared by both core
and non-core) were not easy to capture.

Hereby, the base libraries have been reduced to the following few
libraries:

- startup.mk contains the startup code for normal Genode processes.
  On some platform, core is able to use the library as well.
- base-common.mk contains the parts of the base library that are
  identical by core and non-core processes.
- base.mk contains the complete base API implementation for non-core
  processes

Consequently, the 'LIBS' declaration in 'target.mk' files becomes
simpler as well. In the most simple case, only the 'base' library must
be mentioned.

Fixes #18
2013-02-19 14:45:55 +01:00
Norman Feske
bcdc706f42 Unify 'ipc.h' and 'ipc_generic.h' across platforms
The distinction between 'ipc.h' and 'ipc_generic.h' is no more. The only
use case for platform-specific extensions of the IPC support was the
marshalling of capabilities. However, this case is accommodated by a
function interface ('_marshal_capability', '_unmarshal_capability'). By
moving the implementation of these functions from the headers into the
respective ipc libraries, we can abandon the platform-specific 'ipc.h'
headers.
2013-02-14 13:23:37 +01:00
Norman Feske
bbca9912e2 Remove 'Native_lock' type from 'native_types.h' 2013-02-14 13:23:36 +01:00
Norman Feske
b1f63e3356 Turn 'platform_env.h' into a private header
This patch removes 'platform_env.h' from the public API headers because
this header was not part of the API anyway.
2013-02-14 13:23:36 +01:00
Christian Prochaska
8f12e555af lx_hybrid: reserve thread context area for core
core does not use POSIX threads when built for the 'lx_hybrid_x86'
platform, so we need to reserve the thread-context area via a segment in
the program to prevent clashes with vdso and shared libraries.

Fixes #639.
2013-02-12 14:13:16 +01:00
Christian Prochaska
1947d08e78 Use the host c++ for linking hybrid applications
Some shared libraries of the host system contain search paths for finding
other needed shared libraries. These paths get evaluated only by a native
linker. To find all needed shared libraries, with this patch, the host
linker is used to link hybrid applications.

Fixes #645.
2013-02-12 12:53:35 +01:00
Alexander Boettcher
f50d816555 base: fix dangling session pointers in rm_session
If page faults are handled concurrently (as for base-nova) the traverse lookup
call in rm_session_component must be thread safe, which it isn't.
If the faulting area is backed by nested dataspaces which are managed by
various rm_sessions then a race happens under following circumstances
(triggered occasionally by the bomb test).

The traverse lookup may return a pointer to a rm_session of a nested dataspace.
If the rm_session is in parallel subject to destruction it happened that faults
got enqueued to the faulters list of the deleted rm_session and internally to
a list of the current rm_session of the Rm_client.

During destruction of the faulting Rm_client the associated rm_session will
be dissolved from the Rm_client, which leads to dereferencing the
dangling pointer of the already destructed rm_session.

On base-nova the memory of the rm_session object get unmapped eventually, so
that the de-referencing of the dangling pointer caused page faults in core.

The memory on other kernels inside core never get unmapped so that the
bug doesn't trigger visible faults.

The patch replace the keeping of a rm_session pointer by keeping a
capability instead. The rm_session object must be looked up now explicitly in
the Object_pool implementation, which implements proper reference counting on
the rm_session object.

Issue #549
2013-02-11 12:01:26 +01:00
Alexander Boettcher
9453d319cb base: add remove_client to rm_session
Fixes #13
2013-02-11 12:01:25 +01:00
Christian Prochaska
cecfbf2eb4 lx_hybrid_ctors: remove 'soname' link option
This patch removes the 'soname' link option for building the host
library for the 'lx_hybrid_ctors' test. Without this option, the
library's absolute path at build time gets hardcoded into the
application, which should be okay for this simple test case.

Fixes #638.
2013-01-28 11:34:14 +01:00
Christian Prochaska
b4980e8b9f Linux: use 'SYS_wait4' instead of 'SYS_waitpid'
'SYS_waitpid' does not exist on x86_64 Linux, but 'SYS_wait4' does.

Fixes #615.
2013-01-24 11:00:07 +01:00
Norman Feske
bef78dd9f8 Core: Fix registration of CPU exception handler 2013-01-11 22:16:25 +01:00
Norman Feske
73ab30c22c Update copyright headers to 2013 2013-01-10 21:44:47 +01:00
Alexander Boettcher
c2d3543e62 base: replace obj_by_* by lookup_and_lock
Add functionality to lookup an object and lock it. Additional the case is
handled that a object may be already in-destruction and the lookup will deny
returning the object.

The object_pool generalize the lookup and lock functionality of the rpc_server
and serve as base for following up patches to fix dangling pointer issues.
2013-01-10 11:13:13 +01:00
Norman Feske
9f82764316 core: Introduce default CPU exception handler
The CPU session interfaces comes with the ability to install an
exception handler per thread. This patch enhances the feature with the
provision of a default signal handler that is used if no thread-specific
handler is installed. The default signal handler can be set by
specifying an invalid thread capability and a valid signal context
capability.

Furthermore, this patch relaxes the requirement of the order of the
calls of 'exception_handler' and 'set_pager'. Originally, the exception
handler could be installed not before setting a pager. Now, we remember
the installed exception handler in the 'Cpu_thread' and propagate to to
the platform thread at a later time.
2013-01-04 15:26:16 +01:00
Norman Feske
9b24115c08 base-linux: fix delegation of invalid capabilities
This patch uses a local_name of -1 to encode an invalid capability.
2013-01-04 15:26:16 +01:00
Norman Feske
693d657e6a base-linux: reflect SIGCHLD as Cpu_session signal
With this patch, core responds to SIGCHLD signals of terminating Genode
processes by reflecting these events as exceptions to the CPU session
interface. This way, Genode processes become able to respond to
terminating Genode child processes.
2013-01-04 15:26:16 +01:00
Norman Feske
38272b9172 base-linux: let core catch SIGCHLD signals 2013-01-04 15:26:16 +01:00
Norman Feske
dfaecfb5ab Make quota-upgrading message more clear
Fixes #592
2012-12-22 13:04:04 +01:00
Christian Helmuth
37a6f2a6b8 Linux: Release Rm_session_mmap::_lock during RPCs
Related to #579.
2012-12-21 14:54:21 +01:00