Commit Graph

475 Commits

Author SHA1 Message Date
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
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
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
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
Martin Stein
71d30297ff hw: clean up scheduling-readiness syscalls
This cleans up the syscalls that are mainly used to control the
scheduling readiness of a thread. The different use cases and
requirements were somehow mixed together in the previous interface. The
new syscall set is:

1) pause_thread and resume_thread

They don't affect the state of the thread (IPC, signalling, etc.) but
merely decide wether the thread is allowed for scheduling or not, the
so-called pause state. The pause state is orthogonal to the thread state
and masks it when it comes to scheduling. In contrast to the stopped
state, which is described in "stop_thread and restart_thread", the
thread state and the UTCB content of a thread may change while in the
paused state. However, the register state of a thread doesn't change
while paused. The "pause" and "resume" syscalls are both core-restricted
and may target any thread. They are used as back end for the CPU session
calls "pause" and "resume". The "pause/resume" feature is made for
applications like the GDB monitor that transparently want to stop and
continue the execution of a thread no matter what state the thread is
in.

2) stop_thread and restart_thread

The stop syscall can only be used on a thread in the non-blocking
("active") thread state. The thread then switches to the "stopped"
thread state in wich it explicitely waits for a restart. The restart
syscall can only be used on a thread in the "stopped" or the "active"
thread state. The thread then switches back to the "active" thread state
and the syscall returns whether the thread was stopped. Both syscalls
are not core-restricted. "Stop" always targets the calling thread while
"restart" may target any thread in the same PD as the caller. Thread
state and UTCB content of a thread don't change while in the stopped
state. The "stop/restart" feature is used when an active thread wants to
wait for an event that is not known to the kernel. Actually the syscalls
are used when waiting for locks and on thread exit.

3) cancel_thread_blocking

Does cleanly cancel a cancelable blocking thread state (IPC, signalling,
stopped). The thread whose blocking was cancelled goes back to the
"active" thread state. It may receive a syscall return value that
reflects the cancellation. This syscall doesn't affect the pause state
of the thread which means that it may still not get scheduled. The
syscall is core-restricted and may target any thread.

4) yield_thread

Does its best that a thread is scheduled as few as possible in the
current scheduling super-period without touching the thread or pause
state. In the next superperiod, however, the thread is scheduled
"normal" again. The syscall is not core-restricted and always targets
the caller.

Fixes #2104
2016-12-14 11:22:27 +01:00
Norman Feske
ccffbb0dfc Build dynamically linked executables by default
Fixes #2184
2016-12-14 11:22:27 +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
Christian Helmuth
53271d8c5f Use default component stack size where appropriate 2016-11-30 13:38:06 +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
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
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
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
Stefan Kalkowski
7841058320 hw: only use x86_64 specifier instead of x86
Fix #2109
2016-10-21 12:39:31 +02:00
Norman Feske
e370e08e01 Define Genode::size_t as unsigned long
Fixes #2105
2016-10-21 12:39:29 +02:00
Stefan Kalkowski
4bd5634bd5 hw: remove kernel unit test framework (fix #2096)
* Remove 'test' routine from kernel/core
* Move 'cpu_scheduler' and 'double_list' test to user-land
* Remove 'hw_info' target at all (can be recycled in a topic branch)
2016-09-30 14:15:22 +02:00
Martin Stein
00c518b55e hw_rpi: remove debug code from USB IRQ handling
Fixes #2088
2016-09-14 11:53:03 +02:00
Martin Stein
9e6189ea11 hw: solve time overflow problem in clock
Ref #2088
2016-09-14 11:53:03 +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
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
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
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
Adrian-Ken Rueegsegger
dd22c961c9 Update Muen port
- Adjust list of Muen components
- vbox: Sync hw_x86_64_muen subject state with Muen SK
2016-08-10 11:07:48 +02:00
Christian Prochaska
84ee970e9b run: look for platform boot string at beginning of line
When running the same kernel in a VM as on the host system and the
kernel boot message from the VM appears on the log output, the run tool
assumes that the host machine has rebooted unexpectedly. With this
commit, an unexpected reboot is assumed only if the kernel boot message
appears at the beginning of a line. On base-hw, we enforce a line feed
at the beginning of the boot message as the SPIKE emulator log starts
with the first message of the kernel lacking a line feed.

Fixes #2041
2016-08-10 11:07:48 +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
Reto Buerki
f241b6e496 Update Muen port to revision c73734d
Issue #2016
2016-07-06 13:02:58 +02:00
Reto Buerki
68bab6a411 hw_x86_64_muen: Use timed events for guest preemption
Write tick count of next kernel timer to the guest timed events page if
present. This causes the guest VM to be preempted at the requested tick
count and ensures that the guest VM can not monopolize the CPU if no
traps occur.

The base-hw kernel expects a configured switch-event from the guest VM
to base-hw with ID 30 and target vector 32 to be present in the system
policy.

Issue #2016
2016-07-06 13:02:57 +02:00
Reto Buerki
7d00763861 hw_x86_64_muen: Use timed events to implement timer
Switch kernel timer driver to timed event interface. The base-hw kernel
expects a configured self-event with ID 31 and target vector 32 to be
present in the system policy.

ssue #2016
2016-07-06 13:02:57 +02:00
Adrian-Ken Rueegsegger
cd6b3b1222 hw_x86_64_muen: Implement Muen Vm_session
* The Vm thread is always paused and on exception to make sure that guest VM
  execution is suspended whenever we handle an interrupt. Also signal the Vm
  session to poke waiting threads (e.g. Virtualbox EMT).

* Implement Vm::proceed
  Switch to the mode transition assembly code declared at the _vt_vm_entry
  label.

Issue #2016
2016-07-06 13:02:55 +02:00
Reto Buerki
082b141e66 hw_x86_64: Add _vt_vm_entry to x86_64 mode transition
The entry enables interrupts and initiates a handover to the guest VM by
invoking event number one. The sti instruction is placed at the start to
allow exits to Muen before handing off to the VM if window exiting is
requested.

Issue #2016
2016-07-06 13:02:55 +02:00
Stefan Kalkowski
e5e1f1261f hw_x86_64_muen: implement VM service skeleton
Issue #2016
2016-07-06 13:02:55 +02:00
Sebastian Sumpf
d1eee98012 base-hw: fix data alignment error on RISC-V
Native UTCB data has to be at an machine word boundary.

fixes #2027
2016-06-28 11:17:27 +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
Adrian-Ken Rueegsegger
c1bb82fb6b base-hw: make Muen sinfo API publicly available
The sinfo function declared in sinfo_instance.h creates a static sinfo
object instance and returns a pointer to the caller.

- kernel timer and platform support to use sinfo() function to
  instantiate sinfo object
- address and size of the base-hw RAM region via the sinfo API
- log_status() function in sinfo API
2016-06-22 12:19:21 +02:00
Stefan Kalkowski
964e9e91c7 base-hw: eliminate the need to $(BASE_HW_DIR)
Instead of introducing a $(BASE_HW_DIR) variable that has to be defined in each
core makefile for the different base-hw targets, this commit replaces the
$(REP_DIR) variable usage in core.inc files with $(BASE_DIR)/../base-hw.

Ref #1955
2016-05-31 15:09:53 +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
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
Martin Stein
722fd85bc1 hw: higher names for core restricted syscalls
To avoid the need for adapting the names of the core restricted syscalls
each time we add a public syscall (restricted names must always be
greater than public names), let restricted syscall names simply start at
100 (we should never have more than 100 public syscalls).

Ref #1972
2016-05-26 15:54:15 +02:00
Martin Stein
608df38402 hw: add dummy config to kernel tests
Building a kernel test produced an error about a missing config
apparently because of recent changes in the run tool. So, we add
a dummy XML node as config.

Ref #1972
2016-05-26 15:54:15 +02:00
Christian Helmuth
111d74744d hw_x86_64: remove aligment attribute from FPU context
We do not ensure that the Fpu::Context is 16-byte aligned and,
therefore, should not tell the compiler that we did. Otherwise, the GCC
may optimize operations regarding the addresses of members as it did for

  if ((addr_t)_fxsave_area & 0xf) ...

With the declared 16-byte alignment the condition will never become
true.
2016-05-23 15:52:50 +02:00
Norman Feske
807be83b1b Remove inconsistent use of 'is_' prefix
Fixes #1963
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
Adrian-Ken Rueegsegger
69e9929f71 hw_x86_64: Change IRTE_COUNT to designate number of IRTEs
Adjust IRTE_COUNT to specify the number of IRTEs and not the index of
the last IRTE entry. This fixes an off-by-one error in the toggle_mask()
function, where the range check for I/O APIC IRQs wrongly ignored IRQ
23.
2016-05-23 15:52:38 +02:00
Adrian-Ken Rueegsegger
61572263d7 hw_x86_64: Drop unneded Pic dummy functions 2016-05-23 15:52:38 +02:00
Norman Feske
0fae8fe9c3 hw: remove custom Cpu_connection
The custom version merely differs from the generic one with respect to
the session quota. Since we support the dynamic upgrading of sessions,
we don't need to provide the big amount (128KiB) defined by the custom
version.
2016-05-23 15:52:37 +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
Johannes Schlatow
f81867f208 base-hw: refactor core.mk and core.inc files
All core.inc files now use $BASE_HW_DIR instead of $REP_DIR. The former
is defined by the core.mk file. This allows including core.inc files
from other repositories (e.g. genode-world) for additional platform
support.

Fixes #1955
2016-05-23 15:52:35 +02:00
Johannes Schlatow
3df03fbc41 base-hw: fix SCU initialization for zynq-based boards
The old implementation cleared all other bits in the SCU control
register when enabling the SCU, which broke the kernel startup on zynq-
based boards.
By only raising the enable bit, we can keep the initial/default state
e.g. as set up by uboot.

Fixes #1953
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
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
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
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
Adrian-Ken Rueegsegger
cd420b05ec hw_x86_64_muen: Use Bitset template for MSI address handle
Use Bitset_2 to represent MSI address handle which renders the
Msi_handle type unnecessary.
2016-04-25 10:48:03 +02:00
Christian Helmuth
9cd26c4d61 Prevent compiler warnings 2016-04-25 10:48:02 +02:00
Martin Stein
4ef2b0ed2e hw arm: avoid shared cache lines during MP init
When bringing up the kernel on multiple cores, there is a time span
where some cores already have caches enabled and some don't. Core-local
storage that may be used during this time must be aligned at least to
the maximum line size among global caches. Otherwise, a cached core may
unintentionally prefetch data of a yet uncached core into a global
cache. This may corrupt the view of the uncached core as soon as it
enables caches. However, to determine the exact alignment for every
single ARM platform isn't sensible. Instead, we can align to the minimum
page size assuming that a cache never wants to prefetch from multiple
pages at once and thus fulfills "line size <= page size".

Fixes #1937
2016-04-25 10:48:01 +02:00
Martin Stein
e6061a794f hw: word-width sensitive kernel-stack size
Ref #1937
2016-04-25 10:48:00 +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
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
fbc35cb796 base: hide slab implementation details from API
Issue #1908
2016-04-25 10:47:56 +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
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
dc0ebba1ec base-hw: clean up native_types.h 2016-03-18 22:43:05 +01:00
Norman Feske
84bfb4c04c base: remove 'Native_thread_id' type
Issue #1832
2016-03-18 22:43:01 +01:00
Stefan Kalkowski
5085ad36c3 tool: remove deprecated 'make prepare' mechanism
Fix #1897
2016-03-17 17:02:04 +01:00
Norman Feske
9b0eb720b0 base: remove 'Native_utcb' from public API
Fixes #1905
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
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
Adrian-Ken Rueegsegger
3a9e5cbd8c Relax tool checks of Muen port
The gnat and gprbuild tools are not necessarily in the PATH when
preparing the port since the effective location is specified by the
--image-muen-gnat-path RUN_OPT.
2016-02-26 11:36:55 +01:00
Reto Buerki
3c23ddb2d5 hw_x86_64_muen: Add support for MSI
Use the new Sinfo::get_dev_info function to retrieve device information
in the platform-specific get_msi_params function. If the requested
device supports MSI, set the IRQ and MSI address/data register values to
enable MSIs in remappable format (see VT-d specification, section
5.1.2.2).

Currently only one MSI per device is supported as the subhandle in the
data register is always set to 0.
2016-02-26 11:36:54 +01:00
Reto Buerki
d137f0f2bf hw_x86_64_muen: Extend sinfo API with device info
The new Sinfo::get_dev_info function can be used to retrieve information
for a PCI device with given source-id (SID). The function returns false
if no device information for the specified device exists.
2016-02-26 11:36:54 +01:00
Reto Buerki
3350c6bf53 hw: Introduce platform-specifc MSI function
The platform-specific get_msi_params function returns MSI parameters for
a device identified by PCI config space address. The function returns
false if either the platform or the device does not support MSI mode of
operation.
2016-02-26 11:36:54 +01:00
Reto Buerki
11ee72eaa6 hw: Add MSI variables to Irq_session_component
Extend the base-hw Irq_session_component class with _is_msi, _address
and _value variables required to support MSI mode of operation.

Return MSI configuration in info() function if _is_msi is set to true.
2016-02-26 11:36:54 +01:00
Reto Buerki
ed54bb2724 hw_x86_64_muen: Adjust _ram_regions function
The available RAM region starts at 25 MiB, not 2 MiB. Also, increase the
region size to 256 MiB.
2016-02-26 11:36:53 +01:00
Reto Buerki
1abff01c66 Update hw_x86_64_muen doc for Muen release 0.7.0 2016-02-26 11:36:53 +01:00
Reto Buerki
aa8e5c5016 Update Muen port to release version 0.7.0 2016-02-26 11:36:53 +01:00
Sebastian Sumpf
1ff7de62f6 muen: remove depenency to ports for make target all 2016-02-26 11:36:52 +01:00
Sebastian Sumpf
d17134baef ldso: Support for RISC-V
issue #1880
2016-02-26 11:36:51 +01:00
Mark Vels
1668983efa base-hw: RISC-V Rocket Core on Zynq
This commit adds rocket core on the Zynq FPGA support to base HW. It also takes
advantage of the new timer infrastructure introduced with the privileged 1.8 and
adds improved TLB flush support.

fixes #1880
2016-02-26 11:36:51 +01:00
Sebastian Sumpf
c246a0d194 base-hw: initial RISC-V support
using the spike instruction emulator

issue #1880
2016-02-26 11:36:51 +01:00
Stefan Kalkowski
5fc9f68941 hw_x86_64: do not reference any muen specifics
Do not build core-muen_on library without the muen soecifier set.
Do not reference files of the muen contrib directory in the first
pass of make's rule analysis, when parding the muen specific kernel
makefile.

Fix #1859
2016-01-26 16:20:47 +01:00