With this patch, functions which execute blocking syscalls on Fiasco.OC
are built with frame pointers to get a correct backtrace shown in GDB.
Also, the backtrace test for a thread currently executing a syscall now
traces the 'Genode::Thread_base::join()' function instead of
'Genode::sleep_forever()', because base-nova has a custom implementation
of 'Genode::sleep_forever()' with a different backtrace than on Fiasco.OC.
Fixes#1061.
Noux generates 'argv[0]' for the initial child automatically (in contrast
to the 'config_args' library), so the first argument stated in the
configuration should not be the GDB program name.
Fixes#1062.
On Genode/Fiasco.OC, when an unresolved page fault occurs, only the IP and
SP registers are valid in the thread state read by GDB monitor. This was
not taken into account so far and the other (possibly outdated) register
values got reported to the client, too.
With this patch, only IP and SP get reported to the client in the page
fault case.
Fixes#1063.
For a main thread a thread object is created by the CRT0 before _main gets
called so that _main can already run in a generic environment that, e.g.,
catches stack overflows as a page-fault instead of corrupting the BSS.
Additionally dynamic programs have only one CRT0 - the one of the LDSO -
which does the initialization for both LDSO and program.
ref #989
Normally for intptr_t the printf format PRIiPTR should be used. As Genode
printf doens't support this format we cast it to long int (intptr_t is int
for 32 bit and long int for 64 bit).
ref #989
The trace_fs server provides access to a Trace_session by using a
File_system_session as frontend.
Each trace subject is represented by a directory ('thread_name.subject')
that contains specific files ('active', 'cleanup', 'enable', 'events',
'buffer_size' and 'policy'), which are used to control the tracing
process of the thread as well as storing the content of its trace
buffer.
The tracing of a thread is only activated if there is a valid policy
installed and the intend to trace the subject was made clear by writing
'1' to the 'enable' file.
The tracing of a thread may be deactived by writing a '0' to the
'enable' file.
A policy may be changed by overwriting the currently used one. In this
case the old policy is replaced by the new policy and is automatically
utilize.
Writing a value to the 'buffer_size' file changes the appointed size of
the trace buffer. This value is only evaluted by reactivating the
tracing process.
The content of the trace buffer may be accessed by reading from the
'events' file. Throughout all tracing session new trace events are
appended to this file.
Nodes of UNTRACED subjects are kept as long as they do not change their
tracing state to DEAD. In this case all nodes are removed from the
file system. Subjects that were traced before and are now UNTRACED will
only be removed by writing '1' to the 'cleanup' file - even if they
are DEAD by now.
To use the trace_fs a config similar to the following may be used:
! <start name="trace_fs">
! <resource name="RAM" quantum="128M"/>
! <provides><service name="File_system"/></provides>
! <config>
! <policy label="noux -> trace" interval="1000" subject_limit="512" trace_quota="64M" />
! </config>
! </start>
'interval' sets the periode in which the Trace_session is polled. The
time is given in milliseconds.
'subject_limit' speficies how many trace subject should by acquired at
most when the Trace_session is polled.
'trace_quota' is the amount of quota the trace_fs should use for the
Trace_session connection. The remaing amount of RAM quota will be used
for the actual nodes of the file system and the 'policy' as well as the
'events' files.
In addiition there are 'buffer_size' and 'buffer_size_limit' that define
the initial and the upper limit of the size of a trace buffer.
Tracing of parent processes or rather threads may be enabled by setting
'parent_levels' to a value greater than '0' (though this attribute is
available, the trace session component within core still lacks support
for it).
A ready-to-use runscript can by found in 'ports/run/noux_trace_fs.run'.
Fixes#1049.
- 'kill()' syscall added
- 'wait()' gets unblocked when a signal occurs
- syscalls can get called from a signal handler without corrupting the 'sysio' object
- the child's exit status gets correctly reported to 'wait()'
- SIGCHLD gets ignored by default
- pending signals survive 'execve()'
Fixes#1035.
This patch re-arranges nitpicker's graphics backend in a more modular
and expandable way. Generalized versions of the 'Canvas',
'Chunky_canvas', and 'Pixel_*' classes have been moved to
'os/include/util/' and 'os/include/os'. The only remaining parts that
are specific to nitpicker's needs are a few drawing functions, each
located in a distinct header at 'os/include/nitpicker_gfx/'.
This patch makes nitpicker's geometry utilities available for the use
by other programs. Thereby, the 'Point', 'Area', and 'Rect' classes
have become templates that take the coordinate type and distance type
as arguments.
Access to a block session is provided by using the block file system.
By specifying the label, each block session request can be routed to
the proper block session provider:
! <fstab>
! ...
! <dir name="dev">
! <block name="blkdev0" label="block_session_0" />
! </dir>
! ...
! </fstab>
In addition to this file system, support for the DIOCGMEDIASIZE ioctl
request was added. This request is used by FreeBSD and therefore our
libc to query the size of the block device in bytes.
Fixes#1010.
All source codes of the glue code between Vancouver and Genode that were
based on existing GPL code had already stated that Genode Labs is not
the sole owner of the code. To make the distinction between the Genode
OS framework and the glue code more clear, this patch removes the text
"is part of the Genode OS framework" from the glue code.
File systems using the File_system_session interface can now be
synchronized by using this syscall. This is needed for file system
that maintain an internal cache, which should be flushed.
Fixes#1008.
As hw_arndale is a bit slower than foc_arm and spawn_serial timing
calculation has changed in general, timeouts of noux_tool_chain_auto test
must be adjusted.
fix#996
Makeinfo versions greater 5 treat an @itemx that isn't preceeded by an @item
not as warning anymore but as error. The GCC version 4.7.2 that is used by
noux currently triggers this error multiple times. This commit adds a patch
to 'make prepare PKG="gcc"' that avoids the use of @itemx without preceeding
@item. As GCC versions greater than 4.8 should fix this problem by themselves
this should be seen as temporary quick fix.
ref #964
At least with base-hw, the endless loop at the end of the fork
parent slows execution of the fork child dramatically. Using
libc function pause() is a cleaner solution anyways.
ref #964
Issue #949
Related to issue #808 - one way to nearly double the maximum VM size for
VMs on 32bit Genode/Nova host if decreased performance is acceptable.
To ease the creation of custom virtual machine monitors on top of
NOVA, this patch moves generic utilities from vancouver resp. seoul to the
public include location 'ports/include/vmm'. As a nice side effect,
this change simplifies 'vancouver/main.cc'.
Issue #949
DosBox is DOS-Emulator which is mainly used for playing old
DOS games on POSIX systems and newer Windows versions.
This port of DosBox runs natively on Genode by using its
SDL backend. It is currently only works on x86_*.
Fixes#937.
This patch changes the noux.run script to use the new log_terminal
component instead of an UART driver. Besides being a nice way to test
the log_terminal service, the new version is much simpler and it just
became compatible to Linux as it no longer relies on an UART driver.
Issue #947
