Commit Graph

720 Commits

Author SHA1 Message Date
Christian Prochaska
a1b4e905ab Signal_receiver::wait_for_signal(): check for pending signal before blocking
Fixes #2267
2017-02-07 11:12:23 +01:00
Christian Helmuth
ce3d10465e Mark warnings from the signal dispatcher as such 2017-01-31 14:58:36 +01:00
Christian Helmuth
7386c4e1d1 More robust handling of suspend in entrypoint
First, calls to manage and dissolve signal contexts now check if the
signal receiver was constructed. There is a small window during suspend
where it is destructed before reconstructed again.

Last, we ensure that processing of incoming signal was deblocked by the
suspend signal before entering the suspend operation. This way we ensure
already queued signal are handled.
2017-01-31 14:58:36 +01:00
Alexander Boettcher
dd5592cc50 Fix String(Hex()) usage
- additional add test casye to log.run

Fixes #2265
2017-01-31 12:02:21 +01:00
Norman Feske
cd3a5852d6 Warn about the use of deprecated headers
This commit enables compile-time warnings displayed whenever a deprecated
API header is included, and adjusts the existing #include directives
accordingly.

Issue #1987
2017-01-31 12:01:18 +01:00
Stefan Kalkowski
c76c199f8d hw: enable SMP for Wandboard (fix #2253) 2017-01-31 12:01:16 +01:00
Martin Stein
ed62199957 test/reconstructible: move to base
The test uses only stuff from the base repo.

Ref #1987
2017-01-31 12:01:15 +01:00
Martin Stein
d1134644cc test/synced_interface: move to base
The test uses only stuff from the base repo.

Ref #1987
2017-01-31 12:01:15 +01:00
Norman Feske
47a129c6af run/platform_drv.inc: add 'need_usb_hid' function
This function returns the information whether the used platform relies
on USB HID for interactive scenarios by default as is the case for most
ARM platforms. In contrast, for x86 the USB driver can be omitted because
we can use the PS/2 driver (that is readily available in repos/os/).
2017-01-31 12:01:12 +01:00
Alexander Boettcher
f52c44647f core: replace misleading avl warning in detach
If the detach address is not the beginning of the region, one gets:

"virtual void Genode::Allocator_avl_base::free(void*): given
 address (0x180e0) is not the block start address (0x18000)"

Instead, print an explicit warning in front of the detach call.
2017-01-31 12:01:12 +01:00
Norman Feske
02d5efcf3f init: apply routing to environment sessions
The init component used to create the CPU/RAM/PD/ROM sessions (the child
environment) for its children by issuing session requests to its parent,
which is typically core. This policy was hard-wired. This patch enables
the routing of the environment sessions of the children of init
according to the configured routing policy.

Because there is no hard-wired policy regarding the environment sessions
anymore, routes to respective services must be explicitly declared in
the init configuration. For this reason, the patch adjusts several run
scripts in this respect.

This patch removes the outdated '<if-args>' special handling of session
labels. The '<if-args>' feature will eventually be removed completely
(ref #2250)

Issue #2197
Issue #2215
Issue #2233
Issue #2250
2017-01-31 12:01:11 +01:00
Norman Feske
e43da51bd6 base: handle dangling env sessions in ~Child
This commit addresses the situation where an environment session
outlives the session-providing service. In this case, the env session
got already invaidated at the destruction time of the server. However,
the underlying session-state structure continues to exist until the
client is destructed. During the eventual destruction of such a dangling
environment session, we have to be careful not to interact with the
no-longer existing service.

Ref #2197
2017-01-20 16:47:01 +01:00
Norman Feske
21458e6efa base: destruction of env-session-providing child
This patch addresses the corner case of destructing a child that
provides an enviroment session to another child. Before this patch,
this situation could result in an infinite loop.

The problem was introduced as a side effect of issue #2197 "base: apply
routing policy to environment sessions".
2017-01-20 16:47:00 +01:00
Christian Prochaska
ec5dbe66db trace_fs: API transition (fix 'deprecated' warnings)
Issue #1987
2017-01-20 16:46:58 +01:00
Christian Prochaska
7948a7261b ldso: constrain second linker symbol relocation pass on x86_64
Handle only GLOB_DAT relocations in the second relocation pass, like it is
done on x86_32 and ARM.

Fixes #2219
2017-01-20 16:46:55 +01:00
Norman Feske
a7f40b24ca Warn about the use of deprecated env() function
This patch enables warnings if one of the deprecate functions that rely
in the implicit use of the global Genode::env() accessor are called.

For the time being, some places within the base framework continue
to rely on the global function while omitting the warning by calling
'env_deprecated' instead of 'env'.

Issue #1987
2017-01-13 13:07:13 +01:00
Norman Feske
73837ef56a init: print error for denied environment sessions
Fixes #2214
2017-01-13 13:07:08 +01:00
Stefan Kalkowski
aa004cf211 base: transition to new API for tests (ref #1987) 2017-01-13 13:07:07 +01:00
Martin Stein
613f4171f3 sd_card: i.MX6 support
The i.MX6 driver shares most of its code with the i.MX53 driver.

Ref #2206
2017-01-13 13:07:06 +01:00
Stefan Kalkowski
fc273f3840 run: remove vanished kernel/platform specifier 2017-01-13 13:07:01 +01:00
Stefan Kalkowski
3886686b83 hw: get rid of global makefiles specific to hw
This commit mostly removes the globally visible NR_OF_CPUS define
from the global makefile specifiers defined in the base-hw repository.
Whereever necessary it adds platform specific makefiles to the base
repository when they were missing.

Ref #2190
2017-01-13 13:06:55 +01:00
Norman Feske
3d7b92ea50 Generalize ABI mechanism to shared objects
This patch make the ABI mechanism available to shared libraries other
than Genode's dynamic linker. It thereby allows us to introduce
intermediate ABIs at the granularity of shared libraries. This is useful
for slow-moving ABIs such as the libc's interface but it will also
become handy for the package management.

To implement the feature, the build system had to be streamlined a bit.
In particular, archive dependencies and shared-lib dependencies are now
handled separately, and the global list of 'SHARED_LIBS' is no more.
Now, the variable with the same name holds the per-target list of shared
libraries used by the target.
2017-01-13 13:06:54 +01:00
Norman Feske
9745effc53 mk: remove obsolete PRG_LIBS variable 2017-01-13 13:06:53 +01:00
Norman Feske
a360452a10 base: remove platform.mk and syscall.mk
The purpose of those libraries is now covered by the kernel-specific
syscall-<kernel> libraries.
2017-01-13 13:06:53 +01:00
Norman Feske
4da52517c1 Simpify startup of dynamically linked binaries
This patch removes the component_entry_point library, which used to
proved a hook for the libc to intercept the call of the
'Component::construct' function. The mechansim has several shortcomings
(see the discussion in the associated issue) and was complex. So we
eventually discarded the approach in favor of the explicit handling of
the startup.

A regular Genode component provides a 'Component::construct' function,
which is determined by the dynamic linker via a symbol lookup.
For the time being, the dynamic linker falls back to looking up a 'main'
function if no 'Component::construct' function could be found.

The libc provides an implementation of 'Component::construct', which
sets up the libc's task handling and finally call the function
'Libc::Component::construct' from the context of the appllication task.
This function is expected to be provided by the libc-using application.
Consequently, Genode components that use the libc have to implement the
'Libc::Component::construct' function.

The new 'posix' library provides an implementation of
'Libc::Component::construct' that calls a main function. Hence, POSIX
programs that merely use the POSIX API merely have to add 'posix' to the
'LIBS' declaration in their 'target.mk' file. Their execution starts at
'main'.

Issue #2199
2017-01-13 13:06:52 +01:00
Sebastian Sumpf
6e14aa4364 ldso: mark functions used during self relocation
These functions are marked as always inline through the 'SELF_RELOC' macro. This
became necessary because on riscv functions calls are performed through the
global offset table, which is not initialized at this point.

Fixes #2203
2017-01-13 13:05:45 +01:00
Norman Feske
253097314c Add unified build directories to create_builddir
This patch makes the benefit of the recently introduced unified Genode
ABI available to developers by enabling the use of multiple kernels from
within a single build directory. The create_builddir tool has gained a
new set of kernel-agnostic platform arguments such as x86_32, or panda.
Most build targets within directories are in principle compatible with
all kernels that support the selected hardware platform. To execute a
scenario via the run tool, one has to select the kernel to use by
setting the 'KERNEL' argument in the build configuration
(etc/build.conf). Alternatively, the 'KERNEL' can be specified as
command-line argument of the Genode build system, e.g.:

  make run/log KERNEL=nova

This allows us to easily switch from one kernel to another without
rebuilding any Genode component except for the very few kernel-specific
ones.

The new version of the 'create_builddir' tool is still compatible with
the old version. The old kernel-specific build directories can still be
created. However, those variants will eventually be removed.

Note that the commit removes the 'ports-foc' repository from the
generated 'build.conf' files. As this is only meaningful for 'foc',
I did not want to include it in the list of regular repositories (as
visible in a 'x86_32' build directory). Hence, the repository must
now be manually added in order to use L4Linux.

Issue #2190
2017-01-13 13:05:44 +01:00
Norman Feske
9ea4a491d6 ld: generate symbol map from base/lib/symbols/ld
This patch removes the manually maintained symbol map from the dynamic
linker. This way, the symbol map stays in sync with the ABI and - more
importantly - no longer uses wildcards. So the symbols exported by the
dynamic linker are strictly limited by the ABI.

Issue #2190
2016-12-23 16:53:17 +01:00
Norman Feske
0d295f75a1 base: apply routing policy to environment sessions
This patch changes the child-construction procedure to allow the routing
of environment sessions to arbitrary servers, not only to the parent.
In particular, it restores the ability to route the LOG session of the
child to a LOG service provided by a child of init. In principle, it
becomes possible to also route the immediate child's PD, CPU, and RAM
environment sessions in arbitrary ways, which simplifies scenarios that
intercept those sessions, e.g., the CPU sampler.

Note that the latter ability should be used with great caution because
init needs to interact with these sessions to create/destruct the child.
Normally, the sessions are provided by the parent. So init is safe at
all times. If they are routed to a child however, init will naturally
become dependent on this particular child. For the LOG session, this is
actually not a problem because even though the parent creates the LOG
session as part of the child's environment, it never interacts with the
session directly.

Fixes #2197
2016-12-23 16:52:08 +01:00
Norman Feske
c450ddcb3d Disambiguate kernel-specific file names
This patch removes possible ambiguities with respect to the naming of
kernel-dependent binaries and libraries. It also removes the use of
kernel-specific global side effects from the build system. The reach of
kernel-specific peculiarities has thereby become limited to the actual
users of the respective 'syscall-<kernel>' libraries.

Kernel-specific build artifacts are no longer generated at magic places
within the build directory (like okl4's includes, or the L4 build
directories of L4/Fiasco and Fiasco.OC, or the build directories of
various kernels). Instead, such artifacts have been largely moved to the
libcache. E.g., the former '<build-dir>/l4/' build directory for the L4
build system resides at '<build-dir>/var/libcache/syscall-foc/build/'.
This way, the location is unique to the kernel. Note that various tools
are still generated somewhat arbitrarily under '<build-dir>/tool/' as
there is no proper formalism for building host tools yet.

As the result of this work, it has become possible to use a joint Genode
build directory that is usable with all kernels of a given hardware
platform. E.g., on x86_32, one can now seamlessly switch between linux,
nova, sel4, okl4, fiasco, foc, and pistachio without rebuilding any
components except for core, the kernel, the dynamic linker, and the timer
driver. At the current stage, such a build directory must still be
created manually. A change of the 'create_builddir' tool will follow to
make this feature easily available.

This patch also simplifies various 'run/boot_dir' plugins by removing
the option for an externally hosted kernel. This option remained unused
for many years now.

Issue #2190
2016-12-23 16:51:32 +01:00
Norman Feske
3865ee7ccc foc: move base/thread_state.h to include/foc/
The header is foc-specific. It used to shadow the generic one provided
by the base repository, which contradicts with the kernel-agnostic
Genode API. Hence, it had to be moved to a foc-specific location.
2016-12-23 16:51:12 +01:00
Norman Feske
f54c85e045 Genode application binary interface (ABI)
This patch decouples the kernel-specific implementation of the dynamic
linker from its kernel-agnostic binary interface. The name of the
kernel-specific dynamic linker binary now corresponds to the kernel,
e.g., 'ld-linux.lib.so' or 'ld-nova.lib.so'. Applications are no longer
linked directly against a concrete instance of the dynamic linker but
against a shallow stub called 'ld.lib.so'. This stub contains nothing
but the symbols provided by the dynamic linker. It thereby represents
the Genode ABI.

At system-integration time, the kernel-specific run/boot_dir back ends
integrate the matching the kernel-specific variant of the dynamic linker
as 'ld.lib.so' into the boot image.

The ABI symbol file for the dynamic linker is located at
'base/lib/symbols/ld'. It contains the joint ABI of all supported
architectures. The new utility 'tool/abi_symbols' eases the creation of
such an ABI symbol file for a given shared library. Its result should be
manually inspected and edited as needed.

The patch removes the 'syscall' library from 'base_libs.mk' to avoid
polluting the kernel-agnostic ABI with kernel-specific interfaces.

Issue #2190
Issue #2195
2016-12-23 16:50:28 +01:00
Alexander Boettcher
e4a1904456 core: fix deadlock in region_map destruction
Introduced by:

commit 99fbb23ec5
Author: Alexander Boettcher <alexander.boettcher@genode-labs.com>
Date:   Fri Sep 9 17:49:34 2016 +0200

    core: use weak_ptr for Rm_faulter and Region_map

    Issue #2086
2016-12-14 11:22:30 +01:00
Norman Feske
ccffbb0dfc Build dynamically linked executables by default
Fixes #2184
2016-12-14 11:22:27 +01:00
Norman Feske
d882277ce3 base: let ldso use the default stack size 2016-12-14 11:19:38 +01:00
Norman Feske
4e4cdacab3 base: trim main-thread size to 4/8 KiB
The main thread does no longer execute application code. It is solely
responsible for the initialization of the component's entrypoint and for
retrieving asynchronous notifications. Since the stack usage is no
longer dependent on application-specific code, we can significantly
shrink it to reduce the memory footprint of components. In the worst
case - should the stack overrun - we would observe a page fault because
the stack is placed in the stack area, surrounded by guard pages.
2016-12-14 11:19:38 +01:00
Norman Feske
cc98cef770 genode_rel.ld: add .gcc_except_table to RO segment
By moving .gcc_except_table section to the read-only ELF segment, this
patch reduces the size of the dynamically allocated data/bss segment.
2016-12-14 11:19:37 +01:00
Norman Feske
a387d68c2c base: use a default stack size of 64 KiB
This patch replaces the former machine-word-dependent default stack size
by the fixed value of 64 KiB which should suffice for components on both
32 and 64 bit. Previously, the default stack size on 64 bit was 128 KiB,
which is wasteful. If a component needs more stack than 64 KiB, it can
specify a custon stack size by implementing 'Component::stack_size'.
2016-12-14 11:19:37 +01:00
Norman Feske
28f5688dcf base: reduce size of initial stack from 32K to 4K
The initial stack is solely used to initialize the Genode environment
along with the application stack located in the stack area. It never
executes application code. Hence, we can make it small. To check that it
is not dimensioned too small, the patch introduces a sanity check right
before switching to the application stack.
2016-12-02 15:20:31 +01:00
Norman Feske
92460cdab7 base: remove initial heap chunk from heap
This change reduces the BSS segment by 32 KiB (on 64 bit).
2016-12-02 15:20:31 +01:00
Norman Feske
25a7ea3d40 base: rename 'Volatile_object' to 'Reconstructible'
Fixes #2151
2016-12-01 17:46:50 +01:00
Christian Helmuth
53271d8c5f Use default component stack size where appropriate 2016-11-30 13:38:06 +01:00
Edgard Schmidt
f97e0f3fa0 Allow RPC arguments w/o default constructor
Fixes #2150
2016-11-30 13:38:03 +01:00
Norman Feske
6a24d70120 Fix clang compile errors
Thanks Keiko Nakata for reporting!

Fixes #2164
2016-11-30 13:37:07 +01:00
Norman Feske
5a1cef6381 Make label prefixing more strict
This patch unconditionally applies the labeling of sessions and thereby
removes the most common use case of 'Child_policy::filter_session_args'.
Furthermore, the patch removes an ambiguity of the session labels of
sessions created by the parent of behalf of its child, e.g., the PD
session created as part of 'Child' now has the label "<child-name>"
whereas an unlabeled PD-session request originating from the child
has the label "<child-name> -> ". This way, the routing-policy of
'Child_policy::resolve_session_request' can differentiate both cases.

As a consequence, the stricter labeling must now be considered wherever
a precise label was specified as a key for a session route or a server-
side policy selection. The simplest way to adapt those cases is to use a
'label_prefix' instead of the 'label' attribute. Alternatively, the
'label' attribute may used by appending " -> " (note the whitespace).

Fixes #2171
2016-11-30 13:37:07 +01:00
Alexander Boettcher
c83eb515f9 base: sanity check for slab element allocation
Issue #1039
2016-11-30 13:37:06 +01:00
Alexander Boettcher
b8f9f92731 base: remove allocation warning in heap
The heap typically first tries to allocate larger chunks than necessary, and
if it fails the actual minimal one. The first attempt already triggers warnings
which are not critical at all. If the second (critical) allocation fails,
then there are additionally checks and warnings already in place.

Issue #1039
2016-11-30 13:37:06 +01:00
Norman Feske
5ba245f476 base: minor style fixes 2016-11-30 13:37:06 +01:00
Alexander Boettcher
33b40ec5d9 base: free memory of object throwing exception
in constructor.

Extend test case to verify it and run it by autopilot.
2016-11-30 13:37:05 +01:00
Alexander Boettcher
03f0f38567 cxx: avoid warnings about cxx exception memory
Avoids warnings like

Warning: 2 dangling allocations at allocator destruction time

during noux process destruction.
2016-11-30 13:37:05 +01:00
Alexander Boettcher
3c4372210e core: remove redundant datastructure
Avl allocator provides a method to lookup any element, which is sufficient
to find all regions to destruct.

Issue #2173
2016-11-30 13:37:04 +01:00
Martin Stein
82443ddee6 thread test: handle capability ref-count overflow
Triggered by the create-as-many-threads test as it tries to
create as many threads as possible.

Ref #2120
2016-11-30 13:37:04 +01:00
Martin Stein
99f18a2fe6 core: handle cap-ref-cnt overflow in create_thread
The code in Core's Cpu_session_component::create_thread might throw a
capability refernce-count overflow if one creates many threads, which would
kill core if not handled.

Ref #2120
2016-11-30 13:37:04 +01:00
Martin Stein
288c2c50ba base: throw exception on cap-ref-count overflow
Ref #2120
2016-11-30 13:37:04 +01:00
Norman Feske
cfdbccc5c2 Remove blocking calls from root and parent RPCs
This is a redesign of the root and parent interfaces to eliminate
blocking RPC calls.

- New session representation at the parent (base/session_state.h)
- base-internal root proxy mechanism as migration path
- Redesign of base/service.h
- Removes ancient 'Connection::KEEP_OPEN' feature
- Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy'
- New 'Slave::Connection'
- Changed child-construction procedure to be compatible with the
  non-blocking parent interface and to be easier to use
- The child's initial LOG session, its binary ROM session, and the
  linker ROM session have become part of the child's envirenment.
- Session upgrading must now be performed via 'env.upgrade' instead
  of performing a sole RPC call the parent. To make RAM upgrades
  easier, the 'Connection' provides a new 'upgrade_ram' method.

Issue #2120
2016-11-25 16:06:42 +01:00
Norman Feske
baf61df0fd base: new 'Registry' data structure
This data structure is meant as a safe alternative for a list wherever
the list is solely used to remember objects and iterate through them in
an unspecified order. One use case is the 'Service_registry'.
2016-11-25 15:30:58 +01:00
Norman Feske
513a3f1d37 base: new 'Id_space' data structure
This data structure allows the association of objects with IDs. IDs are
kept in an AVL tree. So in contrast to a bit allocator, the ID space can be
sparsely populated and does not need to be dimensioned. The lifetime of
an ID is bound to an 'Element' object, which relieves the programmer
from manually allocating/deallocating IDs for objects.

Issue #2120
2016-11-25 15:30:58 +01:00
Alexander Boettcher
81f0cacf66 core: prefer RAM allocation in high memory
We preserve lower RAM for device drivers with physical memory
constraints. If no physical RAM constraint exists, the allocations above
3G (32-bit) or 4G (64-bit) are preferred.
2016-11-25 15:30:57 +01:00
Christian Helmuth
f75f199947 ldso: initialize ELF object before relocating
This fixes a regression on Ubuntu 16.04 (resp. Linux systems with recent
kernel versions) and address-space randomization originating from an
uninitialized relocation base of 0.
2016-11-25 15:27:28 +01:00
Norman Feske
82107bef9b base: buffer session args in 'Connection'
This patch is a preparation of the forthcoming async parent interface.
Note that this patch increases the size of connection objects.
Furthermore it adds a diagnostic message whenever a connection fails.

Issue #2166
2016-11-25 15:27:28 +01:00
Norman Feske
ac1794ed7d base: add const operator * to 'Volatile_object' 2016-11-25 15:27:27 +01:00
Norman Feske
0e0f830a14 base: make Volatile_object noncopyable
Unfortunately, the volatile object does not inherit the noncopyable
attribute of the enclosed object. By making all volatile objects
noncopyable, we prevent the accidental copying of a noncopyable object
wrapped in a volatile object.
2016-11-25 15:27:27 +01:00
Norman Feske
b8e98f2355 base: forward args in Output::print
The original version copied the arguments, which does not work for the
output of complex types, in particular non-copyable objects.
2016-11-25 15:27:27 +01:00
Norman Feske
35fa67768f base: add 'Volatile_object::print' method
The method prints the message "<unconstructed>" if the object is not
available. Otherwise, it prints the encapsulated object.
2016-11-25 15:27:26 +01:00
Stefan Kalkowski
f60cf697d2 core: simplify Rom_module and Rom_fs
* replace print_fs with Output::print equivalent
* use Avl_tree::for_each instead of own implementation
* extend constness

Ref #2159
2016-11-08 15:45:21 +01:00
Stefan Kalkowski
e1ec39e476 base: replace dump utilities in Allocator_avl
Replace 'dump()' debug utilities within Allocator_avl with Output::print
equivalents, and use the new Avl_tree::for_each utility to simplify
the implementation.

Ref #2159
2016-11-08 15:44:55 +01:00
Stefan Kalkowski
1542d92165 base: iterator for AVL tree (fix #2159) 2016-11-08 15:43:53 +01:00
Emery Hemingway
eff90d759f remove global namespacing from internal base headers
Making the Genode namespace global can cause name collisions on
base-linux.

Fix #2158
2016-11-08 15:26:33 +01:00
Norman Feske
f577c451ef increase stack size of signal-proxy thread
This fixes the warning "small stack of 3996 bytes [...] may break Linux
signal handling" on 32-bit base-linux.
2016-11-08 15:26:33 +01:00
Norman Feske
784e728727 Clean ldso from using deprecated APIs
Issue #1987
2016-11-08 15:26:32 +01:00
Norman Feske
20faa8b84e base: 'String' constructor overload for literals
This overload covers the common case for initializing a string from a
literal without employing the 'Output' mechanism. This way, such
strings can by constructed without calling virtual functions, which in
turn makes the 'String' usable for the 'init_rtld' phase of the dynamic
linker.
2016-11-08 15:26:31 +01:00
Norman Feske
b9280678fb base-linux: fix race in region_map_mmap
This patch fixes a race condition triggered by the thread test running
on Linux inside VirtualBox. The 'test_stack_alloc' sporadically produced
one of two errors: A segfault in the 'Thread::deinit_platform_thread' on
the attempt to access the 'native_thread' of the to-be-destructed thread
(this data structure is located on the thread's stack). Or, an error
message about a region conflict within the stack area.

The problem was that two instances of 'Region_map_mmap' issued a
sequence of munmap and mmap each. Even though each instance locked the
attach/detach operations, the lock was held per instance. In a situation
where two instances performed attach/detach operations in parallel, the
syscall sequences could interfere with each other.

In the test scenario, the two region-map instances are the test's
address space and the stack area. When creating a thread, the thread's
trace-control dataspace is attached at an arbitrary place (picked by
the Linux kernel) within the address space whereas the stack is attached
at the stack area. The problem is the following sequence:

Thread A wants to destruct a thread:
1. Remove stack from stack area
   (issue unmap syscall)
2. Preserve virtual address range that was occupied from the stack
   so that Linux won't use it
   (issue mmap syscall)

Thread B wants to construct a thread:
1. Request trace-control dataspace from CPU session
2. Attach trace-control dataspace to address space at a location
   picked by the Linux kernel
   (issue mmap syscall)

The problem occurs when thread B's second step is executed in between
the steps 1 and 2 of thread A and the Linux kernel picks the
just-unmapped address as the location for the new trace-control mapping.
Now, the trace control dataspace is mapped at the virtual address that
was designated for the stack of the to-be-created thread, and the
attempt to map the real stack fails.

The patch fixes the problem by replacing the former region-map-local
locks by a component-global lock.

Furthermore, it cleans up core's implementation of the support function
for the region-map-mmap implementation, eliminating the temporary
unlocking of the region-map lock during RPC.
2016-11-08 15:26:30 +01:00
Norman Feske
afed9cfd95 base: let string accept multiple arguments
Issue #2064
2016-11-08 15:26:30 +01:00
Stefan Kalkowski
7e1692d997 core: unify handling of boot modules
Instead of solving the problem to deliver ROM modules to core while booting
differently for the several kernels (multi-boot, elfweaver, core re-linking),
this commit unifies the approaches. It always builds core as a library, and
after all binaries are built from a run-script, the run-tool will link an
ELF image out of the core-library and all boot modules. Thereby, core can
access its ROM modules directly.

This approach now works for all kernels except Linux.

With this solution, there is no [build_dir]/bin/core binary available anymore.
For debugging purposes you will find a core binary without boot modules, but
with debug symbols under [run_dir].core.

Fix #2095
2016-11-08 15:26:27 +01:00
Norman Feske
9572ff9413 base: remove original PDBG from base/printf.h
This macro is superseded by base/debug.h.

Issue #2125
2016-11-08 15:26:27 +01:00
Emery Hemingway
ef5f36bf4e Redefine PDBG to use new log output function
PDBG is redefined in base/debug.h, an aide to development which is not
to be included in release code.

Fix #2125
2016-10-21 12:45:44 +02:00
Stefan Kalkowski
2a2e5c2df4 base-*: remove usage of printf
base generic code:
  * Remove unused verbosity code from mmio framework
  * Remove escape sequence end heuristic from LOG
  * replace Core_console with Core_log (no format specifiers)
  * move test/printf to test/log
  * remove `printf()` tests from the log test
  * check for exact match of the log test output
base-fiasco:
  * remove unused Fiasco::print_l4_threadid function
base-nova:
  * remove unused hexdump utility from core
base-hw:
  * remove unused Kernel::Thread::_print_* debug utilities
  * always print resource summary of core during startup
  * remove Kernel::Ipc_node::pd_label (not used anymore)
base*:
  * Turn `printf`,`PWRN`, etc. calls into their log equivalents

Ref #1987
Fix #2119
2016-10-21 12:39:36 +02:00
Alexander Boettcher
c99729093a base: fix race in multiple lock.unlock() calls
Fixes #2122
2016-10-21 12:39:34 +02:00
Alexander Boettcher
3449985fdf base: avoid deadlock in region_map destruction
Fixes #2115
2016-10-21 12:39:33 +02:00
Christian Prochaska
3a1f852318 base: don't use the 'size' argument in 'Heap::free()'
The Heap reports that 'free()' does not rely on a valid 'size' argument,
so it should not use it.

Fixes #2113
2016-10-21 12:39:32 +02:00
Stefan Kalkowski
3f6e148621 base: remove obsolete _prog_img_data symbol
Fix #2099
2016-10-21 12:39:31 +02:00
Emery Hemingway
80558374f5 base: print support for Xml_node
Ref #1987
2016-10-21 12:39:29 +02:00
Norman Feske
e370e08e01 Define Genode::size_t as unsigned long
Fixes #2105
2016-10-21 12:39:29 +02:00
Alexander Boettcher
99fbb23ec5 core: use weak_ptr for Rm_faulter and Region_map
Fixes #2086
2016-09-14 11:53:04 +02:00
Stefan Kalkowski
2147c42ec6 base: unify page-fault notification for kernels
* Enable page-fault messages for regions not directly managed by core
* Unify output given when a page-fault occurs related to those regions

Fix #2082
2016-09-09 11:49:34 +02:00
Christian Helmuth
5a92c9b6eb Increase stack size of mp_server test 2016-09-09 11:48:43 +02:00
Christian Helmuth
fcf5bc9187 base: start signal-proxy thread on construction
Thanks @ssumpf for the investigation.
2016-09-09 11:48:43 +02:00
Stefan Kalkowski
e7d5b34fc5 base: String constructor for different lengths
Let the copy constructor compile for different CAPACITYs of
the String<CAPACITY> class.

Fix #2085
2016-09-09 11:48:43 +02:00
Norman Feske
fac69eff48 core: handle out-of-memory in RM service
This patch adds the missing exception handling for depleted RM session
quotas. If core runs out of session quota while creating a new region
map, it now reflects this condition as a Region_map::Out_of_metadata
exception to the RM client. Thanks to Denis Huber for reporting the
issue!
2016-08-29 17:29:37 +02:00
Christian Prochaska
d2e246d916 base: allow to set label in Log_connection
Fixes #2074
2016-08-29 17:29:36 +02:00
Norman Feske
a845bdafeb core: fix regression in sig context ownership test
This patch fixes a problem similar to issue #2065 but for the freeing of
signal contexts.
2016-08-29 17:29:33 +02:00
Norman Feske
8d1cf08b1a core: fix regression in dataspace ownership test
This patch revives our ds_ownership test from 2012, which just revealed
a regression in core where the dataspace-free operation of the RAM
service would unconditionally destroy dataspace objects from foreign
sessions. The patch fixes the bug and adds an updated version of the
test to the autopilot.

Fixes #2065
2016-08-29 17:29:33 +02:00
Alexander Boettcher
9c098752b0 core: fix memory mapping calc. for big regions
Fixes #2063
2016-08-29 17:29:32 +02:00
Norman Feske
17c79a9e23 base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.

While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).

To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.

Issue #1987
2016-08-29 17:27:10 +02:00
Christian Prochaska
a5d3aa8373 base: increase label length limit of core LOG session
Fixes #2061
2016-08-29 17:27:10 +02:00
Norman Feske
892f21fd54 base: document error-message style conventions 2016-08-29 17:27:10 +02:00
Norman Feske
26a4534a37 base: helper for hex-formatted output of ranges 2016-08-29 17:27:09 +02:00
Norman Feske
9c2f229246 base: helper for printing individual characters 2016-08-29 17:27:09 +02:00
Johannes Schlatow
acd2a40076 base: print() functions for floating point types
Fixes #2055
2016-08-29 17:23:19 +02:00
Christian Helmuth
1776babbd1 Revert "arm: prevent 64K default alignment of text segment"
This reverts commit 2127c8acf2 because the
alignment is already sanitized by commit 11c31c4432.

(discussed here 2127c8acf2)
2016-08-10 11:07:57 +02:00
Alexander Boettcher
155621767a sel4: limit mp_server.run to 1 cpu for sel4
Issue #2044
2016-08-10 11:07:55 +02:00
Alexander Boettcher
b5ff552460 base: extend core_mem_alloc free by phys_addr
required by base-sel4 to turn used page frames back to untyped memory

Issue #2044
2016-08-10 11:07:52 +02:00
Alexander Boettcher
e89b28ca1b sel4: add signal support
Fixes #1716
Issue #2044
2016-08-10 11:07:51 +02:00
Alexander Boettcher
8b505306ed core: name initial threads not just "name"
to make debugging more comfortable

Issue #2044
2016-08-10 11:07:50 +02:00
Alexander Boettcher
cb675a12d8 base: factor out irq parsing into helper header
to be used by sel4 in the next commit

Issue #2044
2016-08-10 11:07:50 +02:00
Alexander Boettcher
464181b01d base: refactor io_port session implementation
Split port API implementation into separate io_port_session_support.cc file,
so that base-sel4 may implement this part alternatively.

Issue #2044
2016-08-10 11:07:50 +02:00
Alexander Boettcher
027e89f91a base: catch uncaught exceptions of threads
and show some message about. On sel4 sometimes exceptions are thrown and no
message is shown, it just seems to hang. With this patch at least you get
an idea that something bad happened.

Issue #2044
2016-08-10 11:07:50 +02:00
Alexander Boettcher
5a0bc07d30 demo: make cancel_blocking working
- remove special handling from base-nova
- add to rpc_server where it actually should be applied to
- required to work for sel4 cancel_blocking

Issue #2044
2016-08-10 11:07:50 +02:00
Christian Helmuth
6726e6d7fe Increase quota of ACPI driver
Platforms with more complex ACPI configurations require more RAM in the
driver, e.g., ~160K for the test notebook on my desk.
2016-08-10 11:07:48 +02:00
Emery Hemingway
1ae0357171 base/sesson_label.h: do not prefix empty strings
Session_label prefix(a, b) shall not return ' -> b' or 'a -> '.

Issue #1787
2016-08-10 11:07:48 +02:00
Norman Feske
38a1e95979 base: add 'String::print' method
This way, we can conveniently output strings without calling the
string() method.
2016-07-15 11:38:27 +02:00
Norman Feske
2127c8acf2 arm: prevent 64K default alignment of text segment 2016-07-15 11:38:27 +02:00
Norman Feske
2cbef82b61 ldso-startup: support build from non-base repos
By always fetching the source relative to BASE_DIR, we can
include the ldso-startup.mk file from other repositories, i.e.,
API packages.
2016-07-15 11:38:27 +02:00
Norman Feske
345f22a5e7 mk: shortcircuit select_from_ports for pkg tool 2016-07-15 11:38:26 +02:00
Norman Feske
b2fddf4b99 mk: always use linker scripts from base
The linker scripts are known to reside in BASE_DIR. By using them
directly from this location instead of searching them in the
REPOSITORIES, we don't need to specify the repos/base as a repository in
order to link.
2016-07-15 11:38:26 +02:00
Norman Feske
a804802bcd Let default tools.conf cover each architecture
This patch handles x86_32 and x86_64 separately since this is the SPEC
value directly supplied to the package build tool. This way, we achieve
that a CROSS_DEV_PREFIX is defined for each supported argument.
2016-07-15 11:38:26 +02:00
Norman Feske
62d65d00e0 Remove signal-source headers from public API
Those headers implement a platform-specific mechanism. They are never
used by components directly.

This patch also cleans up a few other remaining platform-specific
artifact such as the Fiasco.OC-specific assert.h.

Issue #1993
2016-07-15 11:38:25 +02:00
Emery Hemingway
2b8c1af9e0 remove 'filename' from ROM sesion args
Conveying the ROM filename as the final label element simplifies
routing policy and session construction.

Annotations by nfeske:

This commit also changes the ROM session to use base/log.h instead of
base/printf.h, which produced build error of VirtualBox because the
vbox headers have a '#define Log', which collides with the content of
base/log.h. Hence, this commit has to take precautions to resolve this
conflict.

The commit alse refines the previous session-label change by adding a
new 'Session_label::prefix' method and removing the use of 'char const *'
from this part of the API.

Fixes #1787
2016-07-11 13:24:36 +02:00
Emery Hemingway
f8337b511b Move Session_label from os to base
Session_label constructor now takes a bare string rather than a
serialized argument buffer.
Replace all instances of previous constructor with 'label_from_args'
function.

Issue #1787
2016-07-11 13:09:24 +02:00
Norman Feske
88b358c5ef Unification of native_capability.h
This patch establishes the sole use of generic headers across all
kernels. The common 'native_capability.h' is based on the version of
base-sel4. All traditional L4 kernels and Linux use the same
implementation of the capability-lifetime management. On base-hw, NOVA,
Fiasco.OC, and seL4, custom implementations (based on their original
mechanisms) are used, with the potential to unify them further in the
future.

This change achieves binary compatibility of dynamically linked programs
across all kernels.

Furthermore, the patch introduces a Native_capability::print method,
which allows the easy output of the kernel-specific capability
representation using the base/log.h API.

Issue #1993
2016-07-11 13:07:37 +02:00
Norman Feske
d71f0a9606 Cleanup of parent-cap handling
This patch alleviates the need for a Native_capability::Dst at the API
level. The former use case of this type as argument to
Deprecated_env::reinit uses the opaque Native_capability::Raw type
instead. The 'Raw' type contains the portion of the capability that is
transferred as-is when delegating the capability (i.e., when installing
the parent capability into a new component, or when installing a new
parent capability into a new forked Noux process). This information can
be retrieved via the new Native_capability::raw method.

Furthermore, this patch moves the functions for retriving the parent
capability to base/internal/parent_cap.h, which is meant to be
implemented in platform-specific ways. It replaces the former set of
startup/internal/_main_parent_cap.h headers.

Issue #1993
2016-07-11 13:05:27 +02:00
Norman Feske
f7bdd383e2 Remove base/native_types.h headers
Issue #1993
2016-07-11 12:06:50 +02:00
Christian Prochaska
29a12ab9a2 base: add 'Thread::mystack() function
The static 'Thread::mystack()' function returns the stack boundaries of
the calling thread. It is useful when a thread uses a diffent stack than
the primary one.

Fixes #2037
2016-07-11 12:06:05 +02:00
Christian Helmuth
c8fe0df0ed Overloads for printing signed/unsigned/bool base types
Issue #1942
2016-06-28 11:09:28 +02:00
Alexander Boettcher
4e9aeb45ea platform_drv: sync startup between acpica
- platform_drv announces a separate "Acpi" session
- platform_drv waits for ROM "system" to change state to "acpi_ready"
- acpica waits for "Acpi" announcement
- acpica uses the platform driver via "Acpi" to reconfigure PCI devices
- acpica changes "system" state to "acpi_ready" after it ready with initialization
- platform_drv reacts on "system" state change to "acpi_ready" by announcing "Platform" session
- drivers start to operate as usual

Issue #2009
2016-06-22 12:21:42 +02:00
Norman Feske
2030ae678e Supplement base/log.h with raw output function
This patch introduces the Genode::raw function that prints output
directly via a low-level kernel mechanism, if available.

On base-linux, it replaces the former 'raw_write_str' function.
On base-hw, it replaces the former kernel/log.h interface.

Fixes #2012
2016-06-22 12:21:42 +02:00
Stefan Kalkowski
1e5c08bb1a base: invert hex value padding to correct meaning
Fix #1996
2016-06-06 09:38:29 +02:00
Christian Helmuth
cf771c10d6 Improve tokenizing to support XML comments
The whole XML comment has to be parsed as one XML tag to support strange
but valid combinations like

  <!---->
  <!--invisible-tag></invisible-tag-->

Fixes #1424
2016-06-06 09:37:47 +02:00
Josef Söntgen
941a71346a base: add print method for unsigned long long
Fixes #1991.
2016-06-04 13:45:27 +02:00
Alexander Boettcher
6289a2379d base: deny session creation if quota insufficient
Quota_exceeded message are of no use during session construction, since
the arguments of the ram_quota are used and no upgrade can take place (the
session construction failed and is so not available for upgrade)

Fixes #1983
2016-05-31 12:02:05 +02:00
Alexander Boettcher
5c10653d8a slab: throw exception if initial allocation fails
Issue #1983
2016-05-31 12:02:04 +02:00
Norman Feske
97a41394b4 Documentation changes on account of the book
This patch removes the outdates doc/architecture.txt since the
topics are covered by the book. We keep repos/os/doc/init.txt
because it contains a few details not present in the book (yet).
The patch streamlines the terminology a bit. Furthermore, it
slightly adjusts a few source-code comments to improve the book's
functional specification chapter.
2016-05-26 15:54:16 +02:00
Norman Feske
357b84835a base: add modern Root_component constructor 2016-05-26 15:54:15 +02:00
Martin Stein
1208d14681 hw: use kernel timer for timer driver
* Adds public timeout syscalls to kernel API
  * Kernel::timeout installs a timeout and binds a signal context to it that
    shall trigger once the timeout expired
  * With Kernel::timeout_max_us, one can get the maximum installable timeout
  * Kernel::timeout_age_us returns the time that has passed since the
    calling threads last timeout installation

* Removes all device specific back-ends for the base-hw timer driver and
  implements a generic back-end taht uses the kernel timeout API

* Adds assertions about the kernel timer frequency that originate from the
  requirements of the the kernel timeout API and adjusts all timers
  accordingly by using the their internal dividers

* Introduces the Kernel::Clock class. As member of each Kernel::Cpu object
  it combines the management of the timer of the CPU with a timeout scheduler.
  Not only the timeout API uses the timeout scheduler but also the CPUs job
  scheduler for installing scheduling timeouts.

* Introduces the Kernel::time_t type for timer tic values and values inherited
  from timer tics (like microseconds).

Fixes #1972
2016-05-26 15:54:15 +02:00
Alexander Boettcher
57f47db823 platform_drv/x86: support ACPI reset
Evaluate fadt xml node in report from acpi_drv. If the io ports in the range
of 0xcf8+4 are necessary for the reset than the platform driver will
react on the 'system' state 'reset' and reboot.

Issue #1962
2016-05-26 15:54:14 +02:00
Alexander Boettcher
6b0022f032 platform_drv: drop deprecated config syntax
- policy entry without deprecated rom node
- skip if_arg and use label directly for routing

see Issue #1801

Issue #1962
2016-05-26 15:54:13 +02:00
Sebastian Sumpf
ee05fb9259 base: Remove dynamic segment check from Elf_binary
Don't check for supported segment types of dynamic binaries, it is to
restrictive. If something goes wrong the dynamic linker will throw an error.
2016-05-23 15:52:51 +02:00
Christian Prochaska
44648bb5c7 tool_chain/cxx: use '__cxa_demangle()' for exception names
Fixes #1976
2016-05-23 15:52:50 +02:00
Christian Prochaska
2cde1d36c1 base: changes for GDB monitor
- add a new function 'binary_ready_hook_for_gdb()' in ldso. GDB can set a
  breakpoint at this function to know when ldso has loaded the binary
  into memory.
- get the thread state from the NOVA kernel immediately on 'pause()'

Fixes #1968
2016-05-23 15:52:49 +02:00
Norman Feske
807be83b1b Remove inconsistent use of 'is_' prefix
Fixes #1963
2016-05-23 15:52:39 +02:00
Norman Feske
15141f3ca7 Remove hand-crafted Rpc_functions typedefs 2016-05-23 15:52:39 +02:00
Norman Feske
ef9a7d2230 base: remove length limit of Type_list 2016-05-23 15:52:39 +02:00
Norman Feske
a99989af40 Separation of thread operations from CPU session
This patch moves the thread operations from the 'Cpu_session'
to the 'Cpu_thread' interface.

A noteworthy semantic change is the meaning of the former
'exception_handler' function, which used to define both, the default
exception handler or a thread-specific signal handler. Now, the
'Cpu_session::exception_sigh' function defines the CPU-session-wide
default handler whereas the 'Cpu_thread::exception_sigh' function
defines the thread-specific one.

To retain the ability to create 'Child' objects without invoking a
capability, the child's initial thread must be created outside the
'Child::Process'. It is now represented by the 'Child::Initial_thread',
which is passed as argument to the 'Child' constructor.

Fixes #1939
2016-05-23 15:52:39 +02:00
Christian Helmuth
3ba61a2ddf Move rust support to libports
Issue #1899
2016-05-23 15:52:38 +02:00
Norman Feske
a7b3072cc2 Pass Env & as first argument to connection objects
This patch supplements each existing connection type with an new
constructor that is meant to replace the original one. The new
one takes a reference to the component's environment as argument and
thereby does not rely on the presence of the globally accessible
'env()' interface.

The original constructors are marked as deprecated. Once we have
completely abolished the use of the global 'env()', we will remove them.

Fixes #1960
2016-05-23 15:52:37 +02:00
Norman Feske
3361651e9e base: remove dependency from deprecated config lib
Issue #1959
2016-05-23 15:52:37 +02:00
Norman Feske
8da737acfd base: add Attached_rom_dataspace::xml method
Issue #1959
2016-05-23 15:52:36 +02:00
Norman Feske
e0c0794f33 base: supplement comment of Xml_node constructor 2016-05-23 15:52:36 +02:00
Norman Feske
8d797105b3 Move Attach_*dataspace utils from os to base
Fixes #1958
2016-05-23 15:52:36 +02:00
Christian Helmuth
16914bddc8 Implement affinity test as component
This enables the use of the current Thread API to set thread affinity on
construction.
2016-05-23 15:52:36 +02:00
Norman Feske
f6dec901bb base: remove Component::name from API
It turns out that the name function does not have much use in practice
except for naming the thread of the component's initial entrypoint. For
dynamically linked components, this thread is created by the dynamic
linker. It is named "ep" in these cases. Considering that we will
eventually turn all regular components into dynamically linked
executables, the additional information provided by the
Component::name() function remains unused. So it is better to not bother
the component developers with adding boilerplate code.
2016-05-23 15:49:56 +02:00
Waylon Cude
1e95af5bab Fixed linking and memory allocation for rust
Now rlibs are actually linked to programs. Target files have been
modified to not generate code that requires compiler-rt. Added a target
for libstd-rust, but it's very broken right now. Moved alloc_system to
the libports folder because either a memory allocator needs to be
written in rust or posix_memalign needs to be implemented. Changed
liblibc to use freebsd as the OS instead of netbsd. Added a library with
unwind dummy functions.

Rust relies on atomic builtins, which are not implemented in libgcc for
ARM. One was implemented in rust, which was sufficient to get the
current rust test to run. Rust libs were added into the group of libs
for the linker so order no longer matters. The raspberry pi now uses an
armv6 target.
2016-05-23 15:49:56 +02:00
Norman Feske
ab88599682 base: document the return value of String::length 2016-05-23 15:49:56 +02:00
Norman Feske
fd401bdf53 Thread API cleanup
This patch cleans up the thread API and comes with the following
noteworthy changes:

- Introduced Cpu_session::Weight type that replaces a formerly used
  plain integer value to prevent the accidental mix-up of
  arguments.
- The enum definition of Cpu_session::DEFAULT_WEIGHT moved to
  Cpu_session::Weight::DEFAULT_WEIGHT
- New Thread constructor that takes a 'Env &' as first argument.
  The original constructors are now marked as deprecated. For the
  common use case where the default 'Weight' and 'Affinity' are
  used, a shortcut is provided. In the long term, those two
  constructors should be the only ones to remain.
- The former 'Thread<>' class template has been renamed to
  'Thread_deprecated'.
- The former 'Thread_base' class is now called 'Thread'.
- The new 'name()' accessor returns the thread's name as 'Name'
  object as centrally defined via 'Cpu_session::Name'. It is meant to
  replace the old-fashioned 'name' method that takes a buffer and size
  as arguments.
- Adaptation of the thread test to the new API

Issue #1954
2016-05-23 15:49:55 +02:00
Norman Feske
7b73d1d823 heap: add new-fashioned constructor 2016-05-09 13:25:11 +02:00
Norman Feske
1f395ae780 base: new interface for textual output
Issue #1942
2016-05-09 13:25:01 +02:00
Norman Feske
3bceefc9cf Omit superfluous use of "CAP"/"SIGNAL" services
The functionality of the former "CAP" and "SIGNAL" services is now
provided by core's "PD" service.
2016-05-09 13:24:51 +02:00
Norman Feske
dc8690ae37 Modularize base-internal headers
Issue #1952
2016-05-09 13:24:39 +02:00
Norman Feske
40a5af42eb Clean up base-library structure
This patch moves the base library from src/base to src/lib/base,
flattens the library-internal directory structure, and moves the common
parts of the library-description files to base/lib/mk/base.inc and
base/lib/mk/base-common.inc.

Furthermore, the patch fixes a few cosmetic issues (whitespace and
comments only) that I encountered while browsing the result.

Fixes #1952
2016-05-09 13:24:11 +02:00
Norman Feske
b8cd56cb90 Tweak slab allocators to use whole pages
Most slab allocators in core use a sliced heap as backing store. Since
sliced-heap allocations are performed at page-granularity, it is
sensible to dimension the slab blocks to fill whole pages.
2016-05-09 13:10:53 +02:00
Norman Feske
ba0545de07 Clean up 'Sliced_heap'
This patch cleans up the implementation of the sliced heap, adds a
constructor that takes references instead of pointers, and adds the
function 'meta_data_size' to determine the meta-data overhead per block.
The latter can be used to dimension slab allocators such that slab
blocks use whole pages.
2016-05-09 13:10:53 +02:00
Norman Feske
4f69772ecc Replace 'Env' interface with modern one
The original 'Env' interface as returned by 'Genode::env()' has been
renamed to 'Env_deprecated' and moved to deprecated/env.h. The new version
of base/env.h contains the interface passed to modern components that
use the component API via base/component.h.

Issue #1832
2016-05-09 13:10:52 +02:00
Norman Feske
7274ca997d Remove Genode::Process from API
This patch makes the former 'Process' class private to the 'Child'
class and changes the constructor of the 'Child' in a way that
principally enables the implementation of single-threaded runtime
environments that virtualize the CPU, PD, and RAM services. The
new interfaces has become free from side effects. I.e., instead
of implicitly using Genode::env()->rm_session(), it takes the reference
to the local region map as argument. Also, the handling of the dynamic
linker via global variables is gone. Now, the linker binary must be
provided as constructor argument.

Fixes #1949
2016-05-09 13:10:52 +02:00
Norman Feske
b49e588c1c Assign threads to PD at its creation time
This patch replaces the former 'Pd_session::bind_thread' function by a
PD-capability argument of the 'Cpu_session::create_thread' function, and
removes the ancient thread-start protocol via 'Rm_session::add_client' and
'Cpu_session::set_pager'. Threads are now bound to PDs at their creation
time and implicitly paged according to the address space of the PD.

Note the API change:

This patch changes the signature of the 'Child' and 'Process' constructors.
There is a new 'address_space' argument, which represents the region map
representing the child's address space. It is supplied separately to the
PD session capability (which principally can be invoked to obtain the
PD's address space) to allow the population of the address space
without relying on an 'Pd_session::address_space' RPC call.
Furthermore, a new (optional) env_pd argument allows the explicit
overriding of the PD capability handed out to the child as part of its
environment. It can be used to intercept the interaction of the child
with its PD session at core. This is used by Noux.

Issue #1938
2016-05-09 13:10:52 +02:00
Norman Feske
2bc8a0f76a Move XML util from os to base repository
Since the dynamic linker depends on the XML utils and we plan to replace
the ancient 'Arg_string' with XML, it is time to move the 'Xml_node' and
'Xml_generator' to base/include.
2016-05-09 13:10:52 +02:00
Norman Feske
73b463cdbb Signal_handler: remove num argument from handler
We will eventually remove the delivery of the number of occurred signals
to the recipient. There haven't been any convincing use cases for this
feature. In the contrary, it actually led to wrong design choices in the
past where the rate of signals carried information (such as the progress
of time) that should better be obtained via an explicit RPC call.

The old 'Signal_rpc_member' template retains the old interface for now.
But the new 'Signal_handler' omits the 'unsigned' argument from the
handler function.
2016-05-09 13:10:52 +02:00
Christian Helmuth
861508ad68 Always recreate library archives
GNU ar only uses a flat module (object) name space but supports multiple
instances of objects with the same name. As we use subdirectories with
source file names that may clash (e.g., signal/common.cc and
server/common.cc in the base library) some of our static library
archives have multiple object instances. This is not an issue on archive
creation but works not as expected when updating archives. To avoid
updates of library archives we delete the files before calling GNU ar.
2016-05-09 13:10:52 +02:00
Norman Feske
511acad507 Consolidate RM service into PD session
This patch integrates three region maps into each PD session to
reduce the session overhead and to simplify the PD creation procedure.
Please refer to the issue cited below for an elaborative discussion.

Note the API change:

With this patch, the semantics of core's RM service have changed. Now,
the service is merely a tool for creating and destroying managed
dataspaces, which are rarely needed. Regular components no longer need a
RM session. For this reason, the corresponding argument for the
'Process' and 'Child' constructors has been removed.

The former interface of the 'Rm_session' is not named 'Region_map'. As a
minor refinement, the 'Fault_type' enum values are now part of the
'Region_map::State' struct.

Issue #1938
2016-05-09 13:10:51 +02:00
Norman Feske
e20bbe7002 base: remove integer return codes from PD-session
The return code of assign_parent remained unused. So this patch
removes it.

The bind_thread function fails only due to platform-specific limitations
such as the exhaustion of ID name spaces, which cannot be sensibly
handled by the PD-session client. If occurred, such conditions used to
be reflected by integer return codes that were used for diagnostic
messages only. The patch removes the return codes and leaves the
diagnostic output to core.

Fixes #1842
2016-05-09 13:09:56 +02:00
Christian Helmuth
9cd26c4d61 Prevent compiler warnings 2016-04-25 10:48:02 +02:00
Martin Stein
cba6f5f298 base: no exit handler for libc stdout log console
We don't want Genode environment objects that register their destructor
for program exit as it is mostly unnecessary and easily produces
dangling pointers. Thus, use unmanaged_singleton instead of the static
keyword.

Fixes #1941
2016-04-25 10:48:02 +02:00
Christian Helmuth
7a64e0bb80 ldso: dump link map of loaded shared objects
Also log the link-map information of shared objects loaded after startup
if 'ld_verbose' is configured.
2016-04-25 10:48:01 +02:00
Martin Stein
9508f397a2 ldso: use get_page_size_log2 instead of "12"
Ref #1941
2016-04-25 10:48:01 +02:00
Martin Stein
a96130f20b base: get rid of alloc align default value
When using the Allocator interface, one can't tell which alignment
resulting allocations fulfill. However, at least on ARM, given the
architectural alignment requirements of ARM memory accesses, one wants
memory allocations (what allocators are for in most cases) to be word
aligned automatically. Previously, at least the AVL allocator simply
called alloc_aligned without defining align in its alloc implementation.
This led to unaligned access faults (the default was 0) when using the
AVL allocator as Allocator (as done in the metadata management of a SLAB
of an AVL that uses the AVL as backing store). To avoid such pitfalls
in the future, we force users of alloc_aligned to always specify align
(why use alloc_aligned without align anyway).

Ref #1941
2016-04-25 10:48:01 +02:00
Johannes Schlatow
5b12034531 hw_zynq: refactor specs
This is a generalisation approach of the hw_zynq target. As the boards
typically use UART1 instead of UART0 (used by qemu), we have to
distinguish between those. Moreover, in general hw_zynq does not imply
zynq_qemu anymore, so that the support of particular boards can be
placed in third-party or community repositories (e.g. Genode world).

Fixes #1926
2016-04-25 10:48:00 +02:00
Norman Feske
05e09a6116 Improve warning message 2016-04-25 10:48:00 +02:00
Norman Feske
f186587cab Unify ipc_msgbuf.h across base platforms
Besides unifying the Msgbuf_base classes across all platforms, this
patch merges the Ipc_marshaller functionality into Msgbuf_base, which
leads to several further simplifications. For example, this patch
eventually moves the Native_connection_state and removes all state
from the former Ipc_server to the actual server loop, which not only
makes the flow of control and information much more obvious, but is
also more flexible. I.e., on NOVA, we don't even have the notion of
reply-and-wait. Now, we are no longer forced to pretend otherwise.

Issue #1832
2016-04-25 10:47:59 +02:00
Norman Feske
0c299c5e08 base: separate native CPU from CPU session
This patch unifies the CPU session interface across all platforms. The
former differences are moved to respective "native-CPU" interfaces.

NOVA is not covered by the patch and still relies on a custom version of
the core-internal 'cpu_session_component.h'. However, this will soon be
removed once the ongoing rework of pause/single-step on NOVA is
completed.

Fixes #1922
2016-04-25 10:47:57 +02:00
Norman Feske
e9dec93f4b base: optimized slab allocator
This patch changes the organization of the slab blocks within the slab
allocator. Originally, blocks were kept in a list sorted by the number
of free entries. However, it turned out that the maintenance of this
invariant involves a lot of overhead in the presence of a large number
of blocks. The new implementation manages blocks within a ring in no
particular order and maintains a pointer to the block where the next
allocation is attempted. This alleviates the need for sorting blocks
when allocating and deallocating.

Fixes #1908
2016-04-25 10:47:56 +02:00
Norman Feske
fbc35cb796 base: hide slab implementation details from API
Issue #1908
2016-04-25 10:47:56 +02:00
Norman Feske
db5969e6cc Stress test for the slab allocator
Issue #1908
2016-04-25 10:47:55 +02:00
Norman Feske
7cf40a0971 allocator_avl: hand back meta data when destructed
This patch ensures that the 'Allocator_avl' releases all memory obtained
from the meta-data allocator at destruction time. If allocations are
still dangling, it produces a warning, hinting at possible memory leaks.
Finally, it properly reverts all 'add_range' operations.
2016-04-25 10:47:55 +02:00
Norman Feske
ed37c2ecff core: use copy of region metadata in detach
This patch fixes a use-after-free problem raised by the recent ability of
the slab allocator to dynamically release empty slab blocks. The
Rm_session_component::detach function used to rely on the assumption
that the region metadata co-located with the allocator metadata of the
'_map' would stay intact even after a 'free' if the region.
2016-04-25 10:47:55 +02:00
Norman Feske
8971bb25ce heap: release ds pool meta data when destructed
This patch makes sure that the dataspace pool is flushed before
destructing the heap-local allocator-avl instance. With the original
destruction order, the allocator would still contain dangling
allocations on the account of the dataspace pool when destructed. In
practice, this caused no problem because the underlying backing store is
eventually freed on the destruction of the pool. But it triggers a
runtime warning of the allocator since it has become more strict with
regard to dangling allocations.
2016-04-25 10:47:55 +02:00
Emery Hemingway
d1dc5a9071 utility to retrieve aligned sizes from arg strings
Issue #1751
2016-04-25 10:47:52 +02:00
Timo Wischer
3e1fa54c61 sd_card: generalise RPi sd card driver
This enables to reuse the driver for zynq (and other platforms) in the
future.

Fixes #1925
2016-04-11 12:12:23 +02:00
Norman Feske
051e84c4b4 Move server API concept to base framework
This commit introduces the new `Component` interface in the form of the
headers base/component.h and base/entrypoint.h. The os/server.h API
has become merely a compatibilty wrapper and will eventually be removed.
The same holds true for os/signal_rpc_dispatcher.h. The mechanism has
moved to base/signal.h and is now called 'Signal_handler'.

Since the patch shuffles headers around, please do a 'make clean' in the
build directory.

Issue #1832
2016-04-11 11:51:46 +02:00
Christian Helmuth
0cacd41823 base: forward arguments in unmanaged_singleton
This enables the use of reference types for constructor arguments.
2016-04-11 11:51:44 +02:00
Christian Prochaska
146c694513 Reduce the maximum LOG session string length
The maximum possible string length is defined by the platform with the
lowest maximum IPC payload size (currently OKL4).

Fixes #1919
2016-04-11 11:51:43 +02:00
Johannes Schlatow
d32b5a54b6 base: remove duplicates from dependency list
This patch prevents duplicates in the DEPS argument to be passed to the build
stage.

Fixes #1916
2016-04-11 11:51:43 +02:00
Norman Feske
cda07b7da0 base: simplification of the IPC code
This commit replaces the stateful 'Ipc_client' type with the plain
function 'ipc_call' that takes all the needed state as arguments.
The stateful 'Ipc_server' class is retained but it moved from the public
API to the internal ipc_server.h header. The kernel-specific
implementations were cleaned up and simplified. E.g., the 'wait'
function does no longer exist. The badge and exception code are no
longer carried in the message buffers but are handled in kernel-specific
ways.

Issue #610
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
47878bd3e1 Remove 'Ipc_istream' and 'Ipc_ostream' from API
Fixes #610
2016-04-11 11:51:42 +02:00
Norman Feske
4cdfb9bc2f base: remove 'Native_connection_state' from API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
da5d182ad3 base: remove 'Native_thread' from public API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
9b0eb720b0 base: remove 'Native_utcb' from public API
Fixes #1905
2016-03-17 17:02:04 +01:00
Waylon Cude
28117fee12 Added rust support
Rust relies on atomic builtins, which are not implemented in libgcc for
ARM. One is implemented in rust, which is sufficient to get the
current rust test to run.

Issue #1899
2016-03-17 17:02:04 +01:00
Norman Feske
9a3185f8ed base-linux: remove chroot support
Fixes #1903
2016-03-08 17:00:54 +01:00
Norman Feske
76db3b9c06 base: retire 'Native_config'
This commit moves the parameters of the stack area to the base-internal
header 'stack_area.h'.

Issue #1832
2016-03-08 17:00:54 +01:00
Josef Söntgen
2490e399dc ldso: check binary pointer before lookup
Check if the binary pointer is valid before attempting to lookup the
symbol. Shared objects with unresolved symbols and missing depencies,
e.g a library that references 'errno' but is not linked against libc,
will now produce an error message when they are loaded by the dynamic
linker.

Fixes #1904.
2016-03-08 17:07:36 +01:00
Emery Hemingway
f46a504bb6 use Arg_string::set_arg_string to set session labels
Issue #1861
2016-03-07 16:10:32 +01:00
Emery Hemingway
723d9e7784 util/arg_string.h: set_arg_string
Convenience function to set x="y" style arguments.

Issue #1861
2016-03-07 16:10:32 +01:00
Christian Helmuth
688e86ab68 core: increase initial quota to 224K 2016-03-07 12:34:47 +01:00
Norman Feske
7f73e5e879 base: hide internals of the Thread API
This patch moves details about the stack allocation and organization
the base-internal headers. Thereby, I replaced the notion of "thread
contexts" by "stacks" as this term is much more intuitive. The fact that
we place thread-specific information at the bottom of the stack is not
worth introducing new terminology.

Issue #1832
2016-03-07 12:34:46 +01:00
Norman Feske
3473955212 base-linux/nova: unify include/rm_session/client.h
By moving the stub implementation to rm_session_client.cc, we can use
the generic base/include/rm_session/client.h for base-linux and
base-nova and merely use platform-specific implementations.

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
6e7f7bdad4 base: move crt0.h and elf.h to base/internal
Those headers remained unused outside the internal framework. So it is
better to remove them from the public API.

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
2e701f9afa base: update include guards
This patch cleans up the include guards, assisted by the
tool/fix_include_ifndef script.
2016-03-07 12:34:45 +01:00
Norman Feske
e6729316ff base: uniform base-internal header structure
This patch establishes a common organization of header files
internal to the base framework. The internal headers are located at
'<repository>/src/include/base/internal/'. This structure has been
choosen to make the nature of those headers immediately clear when
included:

  #include <base/internal/lock_helper.h>

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
be496c6dc1 base: remove kernel-specific base/sleep.h
With this patch, the platform differences reside solely in the
implementation of the base library.

Issue #1832
2016-03-07 12:34:44 +01:00
Norman Feske
62b1c55399 Integrate CAP session into PD session
This patch integrates the functionality of the former CAP session into
the PD session and unifies the approch of supplementing the generic PD
session with kernel-specific functionality. The latter is achieved by
the new 'Native_pd' interface. The kernel-specific interface can be
obtained via the Pd_session::native_pd accessor function. The
kernel-specific interfaces are named Nova_native_pd, Foc_native_pd, and
Linux_native_pd.

The latter change allowed for to deduplication of the
pd_session_component code among the various base platforms.

To retain API compatibility, we keep the 'Cap_session' and
'Cap_connection' around. But those classes have become mere wrappers
around the PD session interface.

Issue #1841
2016-03-07 12:34:44 +01:00
Norman Feske
b1910cdd54 Integrate SIGNAL session into PD session
This patch removes the SIGNAL service from core and moves its
functionality to the PD session. Furthermore, it unifies the PD service
implementation and terminology across the various base platforms.

Issue #1841
2016-03-07 12:34:44 +01:00
Norman Feske
5d559a0699 Move util/volatile_object.h from os to base 2016-03-07 12:34:44 +01:00
Martin Stein
ff10687a6c toolchain: report missing ports at once
Previously, ports that were needed for a scenario and that were not
prepared or outdated, triggered one assertion each during the second
build stage. The commit slots a mechanism in ahead that gathers all
these ports during the first build stage and reports them in form of a
list before the second build stage is entered.  This list can be used
directly as argument for tool/ports/prepare_port to prepare respectively
update the ports. If, however, this mechanism is not available, for
example because a target is build without the first build stage, the old
assertion still prevents the target from running into troubles with a
missing port.

Fixes #1872
2016-03-07 12:34:43 +01:00
Reto Buerki
f1d2d7251d hw_x86_64_muen: Include static ACPI report ROM
Enable the ACPI functionality in the platform_drv on hw_x86_64_muen and
provide a simple generated XML report as ROM session in order to make
the PCI configuration space available.

This is a requirement to implement support for MSI on hw_x86_64_muen.
2016-02-26 11:36:53 +01:00
Sebastian Sumpf
d17134baef ldso: Support for RISC-V
issue #1880
2016-02-26 11:36:51 +01:00
Sebastian Sumpf
8c6e3c6251 riscv: create_builddir support
issue #1880
2016-02-26 11:36:50 +01:00
Sebastian Sumpf
d424134073 cxx: Simplify C++ exception wrapper functions
The wrapper functions (e.g., 'Unwind_*' and friends) now have the same signature
as the original function in 'libgcc', reside in a separate C file which is
archived to cxx.lib.a. In supc++.o we prefix the wrapped functions with '_cxx_'.

This also enables support for riscv.

related to #1880
2016-02-16 14:38:02 +01:00
Sebastian Sumpf
bfe5208e0e base: Align heap/slab allocation to machine word size
required by riscv

related to #1880
2016-02-16 14:38:02 +01:00
Christian Helmuth
2a698ffd5f signal: prevent submission of contexts w/o receiver
This prevents a sporadic null-pointer dereference in the nic_loopback
test, which occurred once in 100 runs. I'm not sure if there's still a
race window (we may investigate) with context dissolve.
2016-01-26 16:20:47 +01:00
Alexander Boettcher
0423369f7f base: Unbound_thread exception in rm::add_client 2016-01-26 16:20:38 +01:00
Stefan Kalkowski
b0b4c3c7fa noux: consider stack alignment constraints
The interim stack in a forked noux process has to consider the architecture
dependent stack alignment constraints.

Fix #1852
2016-01-26 16:20:37 +01:00
Stefan Kalkowski
7aff1895bf hw: enable SMP for ARM Cortex A9
This commit enables multi-processing for all Cortex A9 SoCs we currently
support. Moreover, it thereby enables the L2 cache for i.MX6 that was not
enabled until now. However, the QEMU variants hw_pbxa9 and hw_zynq still
only use 1 core, because the busy cpu synchronization used when initializing
multiple Cortex A9 cores leads to horrible boot times on QEMU.

During this work the CPU initialization in general was reworked. From now
on lots of hardware specifics were put into the 'spec' specific files, some
generic hook functions and abstractions thereby were eliminated. This
results to more lean implementations for instance on non-SMP platforms,
or in the x86 case where cache maintainance is a non-issue.

Due to the fact that memory/cache coherency and SMP are closely coupled
on ARM Cortex A9 this commit combines so different aspects.

Fix #1312
Fix #1807
2016-01-26 16:20:18 +01:00
Martin Stein
c58de0d80e hw_panda: driver for Cortex-A9 wakeup generator
Ref #1312
2016-01-15 16:42:12 +01:00
Stefan Kalkowski
23f9761297 base: minimize critical section in Semaphore::up
When unblocking a thread in Semaphore::up() while holding the fifo meta-data
lock, it might happen that the lock holder gets destroyed by the one it was
unblocking. This happened for instance in the pthread test in the past, where
thread destruction was synchronized via a semaphore. There is no need to hold
the lock during the unblock operation, so we should do it outside the critical
section.

Fix #1333
2015-12-10 13:16:27 +01:00
Martin Stein
492bd39619 epit timer: raise precision
Previously we used a pretty slow external clock source for the timer. This
resulted in such a low TICS_PER_MS value that the granularity wasn't
sufficient to find a setup with a precision better than 1 second error per
minute. Now we use the so-called High Frequency Reference Clock as input
with TICS_PER_MS=33333 and the timer precision is significantly < 1 second per
minute.

Fixes #1805
2015-12-10 13:16:26 +01:00
Sebastian Sumpf
41b9f6bd03 ldso: Make truly self relocatable
On Linux the linker can now be loaded at arbitrary addresses, this became
necessary for newer kernel versions. The 'linux_arm' target is not supported.

Issue #1728
2015-12-10 13:16:25 +01:00
Stefan Kalkowski
d65beb970d dde_linux: KMS-based Intel framebuffer driver (II)
* enable i915 driver from Linux 3.14.5
* tested for generation 5 till 8 GPUs

The driver can be configured at run-time via the config ROM. Every
connector of the graphic card can be configured separately using the
following syntax

  <config>
    <connector name="LVDS-11" width="1280" height="800" enabled="true"/>
  </config>

Also, when enabled within the intel framebuffer driver configuration like
the following

  <config buffered="yes"/>

a simple ram dataspace is propagated to the client and the driver
itselfs copies from that buffer to the framebuffer triggered via refresh
calls. This option is useful to alleviate tearing effects.

The  driver distributes all available connectors of the graphic card and
their supported resolutions via a report. It looks like follows

  <connectors>
    <connector name="LVDS-11" connected="1">
      <mode width="1280" height="800" hz="60"/>
      ...
    </connector>
    ...
  </connectors>

The driver distributes the report only if this is stated within its
configuration, like the following

  <config>
    <report connectors="yes"/>
  </config>

Fix #1764
2015-11-29 18:17:07 +01:00
Alexander Boettcher
e49a5ee19f base: make reference ram cap part of child policy
Issue #1539
2015-11-27 12:18:54 +01:00
Sebastian Sumpf
0c3dfbad65 base-hw: use signal context list for pending signals
'block_for_signal' and 'pending_signal' now set pending flag in signal context
in order to determine pending signal. The context list is also used by the
'Signal_receiver' during destruction.

Fixes #1738
2015-11-27 12:18:50 +01:00
Alexander Boettcher
c7df65e1da base: invalidate thread cap if task creation fails
Issue #1778
2015-11-18 12:22:09 +01:00
Alexander Boettcher
3789a75ed6 base: support ascii_to for uint64_t
Issue #1764
2015-11-18 12:22:07 +01:00
Christian Helmuth
a0d92fcdb8 platform_drv: increase RAM config for -O0 builds 2015-11-18 12:22:05 +01:00
Norman Feske
82991ba378 base: fix warning in console.cc 2015-11-04 13:49:01 +01:00
Alexander Boettcher
f42f946f3b base: support parsing multiboot for phys. memory
Issue #1741
2015-11-04 14:09:27 +01:00
Alexander Boettcher
7ea5884ffc base: use mmio framework for multiboot handling
Issue #1741
2015-11-04 14:09:26 +01:00
Norman Feske
96d021b9d4 base: char const * comparison operators for String 2015-11-03 17:04:16 +01:00
Alexander Boettcher
f9fbe34644 base: avoid detaching not attached trace_control 2015-10-28 15:06:23 +01:00
Alexander Boettcher
c4f8af2665 hw_zynq: limit cpu count to 1 in mp_server.run
qemu says:

Number of SMP cpus requested (2), exceeds max cpus supported by machine `xilinx-zynq-a9' (1)
2015-10-28 15:06:22 +01:00
Sebastian Sumpf
2b429ee84c base: Dispatch server signal in entry point
Currently, when a signal arrives in the main thread, the signal dispatcher is
retrieved and called from the main thread, the dispatcher uses a proxy object
that in turn sends an RPC to the entry point. This becomes a problem when the
entry point destroys the dispatcher object, before the dispatch function has
been called by the main thread. Therefore, the main thread should simply send an
RPC to the entry point upon signal arrival and the dispatching should be handled
solely by the entry point.

Issue #1738
2015-10-28 15:06:22 +01:00
Alexander Boettcher
2e62543fdb nova: use remote revoke
Fixes #1733
2015-10-09 16:38:48 +02:00
Emery Hemingway
df0bbe0b0e ascii_to() utility for boolean values
Also, Genode::Arg was adapted to use the new utility for boolean tokens
and strings.

Issue #1648
2015-10-09 16:35:30 +02:00
Alexander Boettcher
286edaed68 base: detect and stop self de-structing threads
Issue #1687
2015-10-06 12:18:51 +02:00
Stefan Kalkowski
c1492da15b base: do not lock interleaved in object pool
Holding the object pool's lock while trying to obtain an object's lock
can leave to dead-lock situations, when more than one thread tries to
access multiple objects at once (e.g.: when transfer_quota gets called
simultanously by the init and entrypoint thread in core). To circumvent
holding the object pool lock too long, but access object pointers safely
on the other hand, this commit updates the object pool implementation
to use weak pointers during the object retrieval.

Fix #1704
2015-09-30 12:20:41 +02:00
Stefan Kalkowski
b585583ec7 core: do not destroy in object pool's apply scope
Destroying an object within the scope of a lambda/functor executed
in the object pool's apply function leads potentially to memory corruption.
Within the scope the corresponding object is locked and unlocked when
leaving the scope. Therefore, it is illegal to free the object's memory meanwhile.
This commit eliminates several places in core that destroyed wrongly in
the object pool's scope.

Fix #1713
2015-09-30 12:20:40 +02:00
Stefan Kalkowski
ccb968ff7d safeguard the synchronized allocator template
* Move the Synced_interface from os -> base
* Align the naming of "synchronized" helpers to "Synced_*"
* Move Synced_range_allocator to core's private headers
* Remove the raw() and lock() members from Synced_allocator and
  Synced_range_allocator, and re-use the Synced_interface for them
* Make core's Mapped_mem_allocator a friend class of Synced_range_allocator
  to enable the needed "unsafe" access of its physical and virtual allocators

Fix #1697
2015-09-30 12:20:39 +02:00
Alexander Boettcher
9b21c88bc6 base: handle unsupported printf commands better
The commit consumes the argument of a unsupported printf command.

Without the commit - a subsequent command uses the argument of the preceding
command, which may cause memory corruption or page faults for sequences using
string commands, e.g.

Genode::printf("%#x %s\n", 0x20, "Test");

'#' is not supported by Genode::printf. In this scenario a pagefault at
address 0x20 is caused.

Fixes #1701
2015-09-30 12:20:38 +02:00
Alexy Gallardo Segura
de87ecfc62 foc_odroid_x2: basic configuration for gpio pins
Fixes #1669
2015-09-30 12:20:38 +02:00
Alexy Gallardo Segura
49b3d520a9 exynos: generalize Exynos5 fb_drv for Exynos4/5
Fixes #1678
2015-09-30 12:20:37 +02:00
Stefan Kalkowski
ed52d5a211 Introduce 'spec' subdirectories to outline aspects
Instead of holding SPEC-variable dependent files and directories inline
within the repository structure, move them into 'spec' subdirectories
at the corresponding levels, e.g.:

  repos/base/include/spec
  repos/base/mk/spec
  repos/base/lib/mk/spec
  repos/base/src/core/spec
  ...

Moreover, this commit removes the 'platform' directories. That term was
used in an overloaded sense. All SPEC-relative 'platform' directories are
now named 'spec'. Other files, like for instance those related to the
kernel/architecture specific startup library, where moved from 'platform'
directories to explicit, more meaningful places like e.g.: 'src/lib/startup'.

Fix #1673
2015-09-16 13:58:50 +02:00
Stefan Kalkowski
acc46f70b7 codezero: remove support from Genode (fix #1668) 2015-09-09 15:14:29 +02:00
Johannes Schlatow
40b31876d2 base-hw: Add basic Zynq-7000 support (QEMU)
Ref #1599
2015-09-09 15:14:28 +02:00
Stefan Kalkowski
458b4d6fc4 base: redesign object pool using lambda interface
Instead of returning pointers to locked objects via a lookup function,
the new object pool implementation restricts object access to
functors resp. lambda expressions that are applied to the objects
within the pool itself.

Fix #884
Fix #1658
2015-09-09 15:14:28 +02:00
Alexander Boettcher
c5877b5575 hw: remove access_thread_regs syscall
Issue #1652
2015-09-09 15:14:27 +02:00
Alexander Boettcher
6e481127ce hw: increase stack size for thread test
Stack size of cpu helper is insufficient if a exception is thrown during
'test_create_as_many_threads()'

Related to #1652
2015-09-09 15:14:27 +02:00
Christian Helmuth
ae43d13b90 Remove always_hybrid spec
With always_hybrid also the lx_hybrid_x86 platform in
tool/create_builddir vanishes.

Fixes #1619
2015-09-09 15:14:27 +02:00
Reinier Millo Sánchez
98da445269 gpio: RaspberryPI GPIO driver
Fixes #1654
2015-08-31 09:09:23 +02:00
Reinier Millo Sánchez
433f859cb9 foc_odroid_x2: USB support
Fixes #1627
2015-08-31 09:09:22 +02:00
Christian Helmuth
10aba44982 thread: increase test timeout
Because of recently added test cases the script exceeds the timeout on
some embedded boards and base-hw.
2015-08-24 11:38:53 +02:00
Adrian-Ken Rueegsegger
c2ff0ae9d4 Minor cleanup fixes
- Fix spelling errors
- Remove extra semicolons
- Remove extra spaces

Fixes #1650
2015-08-21 11:00:59 +02:00
Norman Feske
b4e3e99cc8 base: add Weak_object::weak_ptr const
Issue #1649
2015-08-21 11:00:58 +02:00
Josef Söntgen
4992903233 Rename audio_out_drv to audio_drv
With the introducation of the Audio_in session interface it makes
sense to rename the current available audio drivers. At the moment
only the dde_bsd audio_drv supports Audio_out as well as Audio_in.
The Linux audio_drv only supports Audio_out (there is no demand for
Audio_in support currently) but is renamed nonetheless to make it
easiert to write generic run scripts.

Issue #1644.
2015-08-21 10:59:46 +02:00
Stefan Kalkowski
eafe5e81e3 core: unify and simplify paging code (Fix #1641)
For most platforms except of NOVA a distinction between pager entrypoint
and pager activation is not needed, and only exists due to historical
reasons. Moreover, the pager thread's execution path is almost identical
between most platforms excluding NOVA, HW, and Fisco.OC. Therefore,
this commit unifies the pager loop for the other platforms, and removes
the pager activation class.
2015-08-21 10:58:59 +02:00
Alexander Boettcher
626b0a68f3 base: increase base-control size for 32bit
It is insufficient for creating threads up to the maximum supported limit
(256 by now).

Issue #1601
2015-08-21 10:58:58 +02:00
Alexander Boettcher
9081653c96 Extend thread test
Issue #1601
2015-08-21 10:58:58 +02:00
Alexander Boettcher
fe4e0702d4 base: contain chunk_size heap consumption
Increase internal chunk size of heap only if an allocation succeeded
beforehand. Otherwise the chunk size increases with every unsuccessful
invocation and a upgrade of the used ram session will be insufficient and of
no use at all.

Fixes #1632
2015-07-21 09:36:46 +02:00
Martin Stein
f3e76b3e9a base: use BDA header in base-nova like base-hw
Moves the Bios Data Area header from base-hw to base. Modifies the
base-nova core console that it uses the header as replacement for
the previous BDA bit logic.

Ref #1625
2015-07-21 09:30:12 +02:00
Martin Stein
c6f73d365a unmanaged singleton: allow private constructors
Introduces a class Unmanaged_singleton_constructor that can be declared as
friend to be able to call unmanaged_singleton on classes with a private
constructor. Enables the appliance of the singleton pattern.

Ref #1625
2015-07-21 09:30:12 +02:00
Alexander Boettcher
0b019d0508 base: move x86 uart driver from nova to base
So it can be reused by base-hw-x86 instead of re-writing it.

Fixes #1403
2015-07-21 09:30:11 +02:00
Stefan Kalkowski
0f05fa6fd4 base: resolve dead lock in weak pointer templates
This commit eliminates the mutual interlaced taking of destruction lock,
list lock and weak pointer locks that could lead to a dead-lock situation
when a lock pointer was tried to construct while a weak object is in
destruction progress.
Now, all weak pointers are invalidated and dequeued at the very
beginning of the weak object's destruction. Moreover, before a weak pointer
gets invalidated during destruction of a weak object, it gets dequeued, and
the list lock is freed again to avoid the former dead-lock.

Fix #1607
2015-07-21 09:30:04 +02:00
Josef Söntgen
7e40f5f587 base: use proper Cpu_session when tracing threads
Up to now it was not possible to trace threads that use a different
Cpu_session rather than env()->cpu_session() (as done by VirtualBox).
This problem is now solved by setting the Cpu_session explicitly when
creating the event logger and attaching the trace control area when
creating the thread.

Fixes #1618.
2015-07-21 09:28:26 +02:00
Alexy Gallardo Segura
c14fe7e6c7 foc: Odroid-X2 basic support
Fix #1597
2015-07-21 09:28:25 +02:00
Alexander Boettcher
c42e770384 detach ds from all rm sessions before destruction
Fixes #1617
2015-07-21 09:28:24 +02:00
Norman Feske
0cd93c64aa ldso: add lx_environ to symbol map
This symbol must be exported to build dynamically-linked executables on
the lx_hybrid_x86 base platform.
2015-07-07 19:48:07 +02:00
Stefan Kalkowski
c951c30d8a base: extend weak pointer test (Ref #1607)
Add a test where a locked pointer shall be taken during object destruction.
Moreover, extend the run-script so it runs on different platforms with
"real" timers.
2015-07-07 19:48:06 +02:00
Stefan Kalkowski
89255c3979 remove Versatile Express board (Fix #1611) 2015-07-07 19:48:06 +02:00
Emery Hemingway
46b7227ef0 cxx: notify parent on abort() (in main thread)
Fixes #1605
2015-07-01 15:09:32 +02:00
Stefan Kalkowski
691df908aa core: remove Rm_member from RM session component
Rm_member does not fulfill a useful role, but makes understanding of
the RM session component more difficult.

Ref #956
2015-07-01 14:46:17 +02:00
Stefan Kalkowski
dc36b63acb base: turn align_addr tool into constexpr
Thereby, the tool can be used to calculate static compile-time values.
Ref #1588
2015-07-01 14:46:17 +02:00
Stefan Kalkowski
b856bfdfcd base: let bit allocator use fine-grained sizes
Ref #1588
2015-07-01 14:46:17 +02:00
Christian Helmuth
11c31c4432 Prevent silly text-segment alignment on all platforms
We set 'ld -z max-page-size' to 4KiB to prevent the linker from aligning
the text segment to any built-in default (e.g., 4MiB on x86_64 or 64KiB
on ARM). Otherwise, the padding bytes are wasted at the beginning of the
final binary.
2015-07-01 14:46:16 +02:00
Stefan Kalkowski
2a351215f4 base: remove pager code from public API
Fix #1593
2015-07-01 14:46:15 +02:00
Norman Feske
e143084b04 base: fix warning in RPC framework
The recent change of the TRACE session interface triggered the
following warning:

/home/no/src/genode/repos/base/include/base/ipc.h:79:4: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    *reinterpret_cast<T *>(&_sndbuf[_write_offset]) = value;
    ^
In file included from /home/no/src/genode/repos/base/src/core/include/trace/session_component.h:19:0,
                 from /home/no/src/genode/repos/base/src/core/trace_session_component.cc:15:
/home/no/src/genode/repos/base/include/base/rpc_server.h:132:42: note: ‘ret’ was declared here
     typename This_rpc_function::Ret_type ret;

The warning occurs for basic return types (like size_t), which are
indeed not initialized. The variable gets its value assigned by the
corresponding 'call_member' overload, to which the variable is passed as
reference. But the compiler apparently is not able to detect this assignment.

Declaring 'ret' with a C++11-style default initializer fixes the warning.
2015-06-22 14:43:40 +02:00
Norman Feske
5d678dba9e core: throw Trace::Out_of_metadata in subjects()
While importing trace sources as trace subjects into a TRACE session,
the session quota might become depleted. The TRACE session already keeps
track of the session quota via an allocator guard but the 'subjects' RPC
function missed to handle the out-of-memory condition. This patch
reflects the error condition as an 'Out_of_metadata' exception to the
TRACE client. It also contains an extension of the trace test to
exercise the corner case.
2015-06-22 14:43:39 +02:00
Alexander Boettcher
705257cf22 cxx: show thread name in event of abort
Issue #1591
2015-06-22 14:43:39 +02:00
Norman Feske
a23ac5f569 base/nova: add idle threads to trace sources
Issue #813
2015-06-22 14:43:39 +02:00
Norman Feske
959572968d core: provide thread exec times via TRACE service
This patch enable clients of core's TRACE service to obtain the
execution times of trace subjects (i.e., threads). The execution time is
delivered as part of the 'Subject_info' structure.

Right now, the feature is available solely on NOVA. On all other base
platforms, the returned execution times are 0.

Issue #813
2015-06-22 14:43:38 +02:00
Norman Feske
2d8a4917a5 base: add Trace::Subject_info::state_name
Issue #813
2015-06-22 14:43:37 +02:00
Josef Söntgen
80893dfcfc platform_drv: specific AUDIO/HDAUDIO class aliases
The alias AUDIO matches audio multimedia device while the HDAUDIO
alias matches HD audio multimedia devices.

Fixes #1581
2015-06-22 14:43:37 +02:00
Christian Prochaska
4cae6c0d12 cxx: report names of uncaught exceptions again
Fixes #1582
2015-06-22 14:43:37 +02:00
Norman Feske
5317cca031 base/allocator.h: clarify use of delete operator
Issue #1571
2015-06-22 14:43:35 +02:00
Stefan Kalkowski
409ac1468e core: implement core allocator's free (ref #1573) 2015-06-22 14:43:35 +02:00
Alexander Boettcher
1f40d9de6a pci: convert to platform_drv
Fixes #1542
2015-06-22 14:43:34 +02:00
Norman Feske
4f927f651b core: handle IRQ sessions by separate entrypoint
Fixes #1572
2015-06-22 14:43:34 +02:00
Alexander Boettcher
1c38d4903b x86: use report_rom for acpi and pci driver
Issue #1542
2015-06-09 11:00:12 +02:00
Norman Feske
ef9c745e42 ldso: add memcpy and memset to symbol.map
On ARM, the compiler generates calls to memcpy and memset. Most
dynamically linked programs use the libc, which provides these
functions. However, if a dynamically linked program does not use the
libc (e.g., noux/minimal or the new version of cli_monitor), those
symbols remain unresolved. By adding them to ldso's symbol.map, the
dynamic linker will resolve them with the functions of the cxx
library, which is part of the dynamic linker.

Issue #1561
2015-06-09 11:00:11 +02:00
Alexander Boettcher
e1896e3b44 run: add platform_drv include for usage by scripts
Related to #765 and used for issue #1542
2015-06-09 11:00:10 +02:00
Stefan Kalkowski
28804e2bfb base: remove cap_integrity test (fix #1536) 2015-05-26 09:40:04 +02:00
Stefan Kalkowski
554146d39c base: enforce ram_quota donations to be consistent
For several basic sessions that core provides default ram quota values
exist in the form of enum values. They are used e.g. by init to deduce
session costs. Unfortunately they were not used when actually establishing
the session, which lead to inconsistencies.

Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
a93266548f base: remove unused enum from object pool
Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
217f62b89d base: move retry template function to util header
Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
64bfe233d7 base: make CAP session upgradeable
* Introduce 'Out_of_metadata' exception for capability allocation

Ref #1443
2015-05-26 09:40:02 +02:00
Stefan Kalkowski
73c3a81e0b base: make PD session upgradeable
Ref #1443
2015-05-26 09:40:02 +02:00
Norman Feske
35a52f0282 base: const qualifiers in base/trace/types.h
This patch adds missing const qualifiers to the == operators of
'Subject_id' and 'Policy_id'. Thanks to Pirmin Duss for reporting.
2015-05-26 09:39:53 +02:00
Christian Helmuth
8990346c6c mmio: fix compiler warnings
We implicitly know that the value range will not exceed access_t despite
the integer-based arithmetics, i.e., negation and shift operations.

Fixes #1524
2015-05-26 09:39:53 +02:00
Norman Feske
e2fe071871 Minor comment refinements for the manual 2015-05-26 09:39:50 +02:00
Christian Prochaska
72e31090ee tool_chain: update GCC to version 4.9.2
Fixes #1520
2015-05-26 09:39:49 +02:00
Christian Prochaska
2706e4cd75 tool_chain: cleanup
Fixes #1517
2015-05-26 09:39:49 +02:00
Alexander Boettcher
e84284c0cd base: remove shared irq from core
Cleanup commit after all relevant drivers got adapted to use the x86 platform
driver (pci_drv).

Issue #1471
2015-05-26 09:39:47 +02:00
Alexander Boettcher
3783db66e2 base: implement detach for core context_area
Required to destroy threads within in core. Used when IRQs get reused on
platforms where every IRQ needs a thread in core.

Issue #1471
2015-05-26 09:39:47 +02:00
Christian Prochaska
3a378bb970 libc_noux: remove dependency on 'platform_env.h'
Currently, libc_noux includes the 'base/src/base/env/platform_env.h' file
to be able to reinitialize the environment using the 'Platform_env'
interface. For base-linux, a special version of this file exists and the
inclusion of the generic version in libc_noux causes GCC 4.9 to make wrong
assumptions about the memory layout of the 'Env' object returned by
'Genode::env()'.

This commit moves the reinitialization functions to the 'Env' interface to
avoid the need to include the 'platform_env.h' file in libc_noux.

Fixes #1510
2015-05-26 09:39:47 +02:00
Adrian-Ken Rueegsegger
96149db858 base: Add #UD exception to x86_64 Cpu_state 2015-05-20 17:52:59 +02:00
Norman Feske
4736488d99 core: change order of _export_ds and _clear_ds
On seL4, we need to convert untyped memory to page frames before being
able to use it as normal memory. There already exists the hook function
'_export_ds' that is principally suitable for such tasks. It is
currently solely used on Linux where we have to create a file for each
dataspace. To make the hook useful also for seL4, we need to call
_export_ds prior _clear_ds. Otherwise, we would try to clear memory that
is still untyped.
2015-05-20 17:52:57 +02:00
Alexander Boettcher
d998df3b7f base: extend irq session to support MSIs
Works on base-nova and base-foc, the other kernels have no MSI support.

Issue #1216
2015-05-20 17:39:14 +02:00
Norman Feske
c1cb3a6642 Increase initial block for cxx malloc
This patch avoids the attempt to extend the cxx-local heap during the
startup phase of an application. Originally, the static part of the cxx
was merely 100 bytes, which did not suffice to run the minimalistic test
roottask on seL4.
2015-05-06 11:32:06 +02:00
Norman Feske
89e987b22e base/x86_32: preserve EBX value in crt0 2015-05-06 11:32:06 +02:00
Alexander Boettcher
0ed45d92ff base: string length handling fix in Rpc_in_buffer
If a null-terminated string exactly of length MAX (0 byte included) is
provided, it will be handled as invalid because of wrong string size length
checks.

Commit fixes this.

Discovered during #1486 development.
2015-05-06 10:55:18 +02:00
Christian Helmuth
f20b6bdc88 Prevent overlap of stack and thread-context members
Now, Thread::Context provides the first word of the stack to prevent the
overlapping of stack top and the 'stack_base' member.

Fixes #1491
2015-05-06 10:55:17 +02:00
Christian Helmuth
98def2488a thread: move Thread_base::myself() to separate file
The thread library (thread.cc) in base-foc shared 95% of the code with
the generic implementation except myself(). Therefore, its
implementation is now separated from the other generic sources into
myself.cc, which allows base-foc to use a foc-specific primitive to
enable our base libraries in L4Linux.

Issue #1491
2015-05-06 10:55:17 +02:00
Martin Stein
c9272937e7 CPU session: apply quota via relative weightings
Physical CPU quota was previously given to a thread on construction only
by directly specifying a percentage of the quota of the according CPU
session. Now, a new thread is given a weighting that can be any value.
The physical counter-value of such a weighting depends on the weightings
of the other threads at the CPU session. Thus, the physical quota of all
threads of a CPU session must be updated when a weighting is added or
removed. This is each time the session creates or destroys a thread.

This commit also adapts the "cpu_quota" test in base-hw accordingly.

Ref #1464
2015-05-06 10:55:16 +02:00
Josef Söntgen
2c39c75e1c base: remove Irq_connection::wait_for_irq() 2015-04-23 16:48:00 +02:00
Alexander Boettcher
faa25e1df6 base: make irq_session asynchronous
second step

options: factor out common parts of irq_session_component.cc
options: use on foc arm no proxy threads

Fixes #1456
2015-04-23 16:47:58 +02:00
Alexander Boettcher
e2cbc7c5b3 base: unify some irq_session headers
remove repos/base-*/include/irq_session headers and use only a unification
from   repos/base/include/irq_session

first step

Issue #1456
2015-04-23 16:47:57 +02:00
Norman Feske
97dc9664fe base: move flex_iterator.h to include/util
Fixes #1482
2015-04-17 16:13:22 +02:00
Norman Feske
eaab23c012 base: const-correctness of Allocator interface
This patch adds const qualifiers to the functions Allocator::consumed,
Allocator::overhead, Allocator::avail, and Range_allocator::valid_addr.

Fixes #1481
2015-04-17 16:13:22 +02:00
Norman Feske
c4dea1057b Document empty Pd_session_client::assign_pci 2015-04-17 16:13:22 +02:00
Stefan Kalkowski
b949489641 base: remove local capability from generic base
* Instead of using local capabilities within core's context area implementation
  for stack allocation/attachment, simply do both operations while stack gets
  attached, thereby getting rid of the local capabilities in generic code
* In base-hw the UTCB of core's main thread gets mapped directly instead of
  constructing a dataspace component out of it and hand over its local
  capability
* Remove local capability implementation from all platforms except Linux

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
a168c9d6ce core: remove global capability id counter
The global capability ID counter is not used by NOVA and Fiasco.OC
and in the future not needed by base-hw too. Thereby, remove the static
counter variable from the generic code base and add it where appropriated.

Ref #1443
2015-04-17 16:13:19 +02:00
Stefan Kalkowski
358380046c base: assign allocator and quota to platform pd
Enable platform specific allocations and ram quota accounting for
protection domains. Needed to allocate object identity references
in the base-hw kernel when delegating capabilities via IPC.
Moreover, it can be used to account translation table entries in the
future.

Ref #1443
2015-04-17 16:13:19 +02:00
Norman Feske
d9d65aa86b base: use reference for ascii_to output argument
Issue #1477
2015-04-17 16:13:19 +02:00
Norman Feske
d884cf1a9a base: unify ascii_to conversion functions
This patch addresses the first point of the issue #1477, namely
replacing the function-template magic by plain function overloads.

Issue #1477
2015-04-13 14:18:16 +02:00
Christian Prochaska
0fd53c7fe4 Extract numeric string arguments with the correct signedness
There are lots of places where a numeric argument of an argument string
gets extraced as signed long value and then assigned to an unsigned long
variable. If the value in the string was negative, it would not be
detected as invalid (and replaced by the default value), but become a
positive bogus value.

With this patch, numeric values which are supposed to be unsigned get
extracted with the 'ulong_value()' function, which returns the default
value for negative numbers.

Fixes #1472
2015-04-13 14:18:15 +02:00
Christian Helmuth
0fb5ce0918 base: run mp_server on hw_x86_64 as single core 2015-04-09 16:04:47 +02:00
Norman Feske
ea9c2199e8 base: extend emergency dataspace size
The emergency dataspace is used to accommodate the corner case where
a signal context capability is created while issuing the first
resource request. Normally, the attempt to upgrade the signal-session
quota under such a constrained situation would fail. By freeing the
emergency dataspace in this situation, we regain enough quota to
upgrade the signal session.

This is a follow up commit for "base: Raise RAM quota of signal session
to 16K" and fixes the resource_request test on 64-bit platforms.
2015-04-09 16:04:46 +02:00
Norman Feske
eaac3cc1bd Revised API documentation
This patch curates the API documentation to become suitable for the
functional specificaton, which is partially generated from the header
files.
2015-04-09 16:04:46 +02:00
Norman Feske
394fce110e base: coding style 2015-04-09 16:04:45 +02:00
Norman Feske
13a0c336d9 base: separate the API's 'Thread_base' constructor
The 'Thread_base' class is constructed differently in some special cases
like the main thread or a thread that use a distinct CPU session. The
official API, however, should be clean from such artifacts. Hence, I
separated the official constructor from the other cases.
2015-04-09 16:04:45 +02:00
Norman Feske
0d74435448 base: remove Genode::parent_cap from the API
Components interact with their environments using the Genode::Env class
instead of directly using the parent capability.
2015-04-09 16:04:45 +02:00
Norman Feske
695ac957f4 base: add missing override annotations 2015-04-09 16:04:44 +02:00
Norman Feske
6fc372bcf4 base: add const qualifiers 2015-04-09 16:04:44 +02:00
Martin Stein
60e392f0c0 hw: support Wandboard Quad (i.MX6)
The port uses the Cortex-A9 private timer for the kernel and an EPIT as
user timer. It was successfully tested on the Wandboard Quad and the CuBox-i
with the signal test. It lacks L2-cache and Trustzone support by now.

Thanks to Praveen Srinivas (IIT Madras, India) and  Nikolay Golikov (Ksys Labs
LLC, Russia). This work is partially based on their contributions.

Fix #1467
2015-04-09 16:04:43 +02:00
Adrian-Ken Rueegsegger
e5f26fa8db base: Raise RAM quota of signal session to 16K
On base-hw/x86_64 the quota of the signal session is not sufficient due to
the large size of the Signal_session_component. Increasing the quota to
16K avoids signal-context resource exhaustion messages as emmitted by the
run/launcher scenario:

  ...
  Quota exceeded! amount=4096, size=4096, consumed=4096
  failed to allocate signal-context resources
  upgrading quota donation for signal session
  C++ runtime: Genode::Parent::Quota_exceeded
  void* abort(): abort called
  ...

Note: This change increases the quota for all kernels even though it is
      strictly only required for base-hw/x86_64.
2015-03-27 11:53:33 +01:00
Reto Buerki
28b5e67a8c Update or add hw_x86_64 copyright headers 2015-03-27 11:53:32 +01:00
Adrian-Ken Rueegsegger
7ce8464b3a hw_x86_64: Enable FPU support
* Enable the use of the FXSAVE and FXRSTOR instructions, see Intel SDM
  Vol. 3C, section 2.5.
* The state of the x87 floating point unit (FPU) is loaded and saved on
  demand.
* Make the cr0 control register accessible in the Cpu class. This is in
  preparation of the upcoming FPU management.
* Access to the FPU is disabled by setting the Task Switch flag in the cr0
  register.
* Access to the FPU is enabled by clearing the Task Switch flag in the cr0
  register.
* Implement FPU initialization
* Add is_fpu_enabled helper function
* Add pointer to CPU lazy state to CPU class
* Init FPU when finishing kernel initialization
* Add function to retry FPU instruction:
    Similar to the ARM mechanism to retry undefined instructions, implement a
    function for retrying an FPU instruction. If a floating-point instruction
    causes an #NM exception due to the FPU being disabled, it can be retried
    after the correct FPU state is restored, saving the current state and
    enabling the FPU in the process.
* Disable FPU when switching to different user context:
    This enables lazy save/restore of the FPU since trying to execute a
    floating point instruction when the FPU is disabled will cause a #NM
    exception.
* Declare constant for #NM exception
* Retry FPU instruction on #NM exception
* Assure alignment of FXSAVE area:
    The FXSAVE area is 512-byte memory region that must be 16-byte aligned. As
    it turns out the alignment attribute is not honored in all cases so add a
    workaround to assure the alignment constraint is met by manually rounding
    the start of the FXSAVE area to the next 16-byte boundary if necessary.
2015-03-27 11:53:31 +01:00
Reto Buerki
e443b859e6 base: Add x86 RESET pseudo-exception
Define RESET as exception 0xfe. The reset state is only used initially
in the CPU idle exception function.
2015-03-27 11:53:31 +01:00
Reto Buerki
c9c84dd751 base: Move Cpu_exception enum to x86_64 cpu_state.h 2015-03-27 11:53:31 +01:00
Adrian-Ken Rueegsegger
408cec32f5 base: Add errcode to x86_64 Cpu_state
The new errcode field is used to store the error code that some
interrupts provide (e.g. #PF). Rework mode transition reserved space and
offset constants to match the new CPU_state layout.
2015-03-27 11:53:21 +01:00
Martin Stein
98616a1812 i.MX53: SD-card driver and bench
The driver for the Freescale eSDHCv2 doesn't support the highest
available bus frequency by now and also the bus width may be set to a
higher value but that needs further checks on the capabilities of the
inserted card.

The commits provide a benchmark as it exists for the OMAP4 SDHC driver.

Fix #1458
2015-03-27 11:53:12 +01:00
Martin Stein
c52bf757f0 register: make bitfield-mask methods constexpr
Ref #1458
2015-03-27 11:53:12 +01:00
Alexander Boettcher
096d72de90 base: check result of bind_thread
Related to #1418
Issue #111
2015-03-27 11:53:12 +01:00
Alexander Boettcher
1f8fad8fa1 base: refactor signal_transmitter::submit
Move it to platform specific .cc file, so that it may get re-implemented
platform specifically if needed.

Issue #1446
2015-03-19 09:32:52 +01:00
Alexander Boettcher
e664c979b2 base: adjust 'affinity.run' time for vea9x4
remove imx53 since it has a single CPU
2015-03-19 08:57:22 +01:00