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154 commits

Author SHA1 Message Date
Fernando Sahmkow
d494b074e8 Kernel: Preempt Single core on redudant yields. 2020-06-27 11:35:45 -04:00
Fernando Sahmkow
ab9aae28bf General: Initial Setup for Single Core. 2020-06-27 11:35:42 -04:00
Fernando Sahmkow
6515c6e8c6 Kernel: Fixes, corrections and asserts to scheduler and different svcs. 2020-06-27 11:35:40 -04:00
Fernando Sahmkow
e31425df38 General: Recover Prometheus project from harddrive failure
This commit: Implements CPU Interrupts, Replaces Cycle Timing for Host 
Timing, Reworks the Kernel's Scheduler, Introduce Idle State and 
Suspended State, Recreates the bootmanager, Initializes Multicore 
system.
2020-06-27 11:35:06 -04:00
bunnei
fc61cb44ee kernel: resource_limit: Reserve physical memory. 2020-04-17 00:59:32 -04:00
bunnei
8f75524e55 kernel: Initialize memory layout for new VMM. 2020-04-17 00:59:32 -04:00
Lioncash
213fff67bc CMakeLists: Make -Wreorder a compile-time error
This can result in silent logic bugs within code, and given the amount
of times these kind of warnings are caused, they should be flagged at
compile-time so no new code is submitted with them.
2020-04-15 14:14:41 -04:00
bunnei
c083ea7d78 core: Implement separate A32/A64 ARM interfaces. 2020-03-02 21:51:57 -05:00
Fernando Sahmkow
d219a96cc8 Kernel: Address Feedback. 2020-02-22 11:18:07 -04:00
Fernando Sahmkow
5c90d22f3d Kernel: Implement Time Manager. 2020-02-22 11:18:07 -04:00
Fernando Sahmkow
179bafa7cb Kernel: Rename ThreadCallbackHandleTable and Setup Thread Ids on Kernel. 2020-02-22 11:18:06 -04:00
Fernando Sahmkow
0728dfef84 Kernel: Make global scheduler depend on KernelCore 2020-02-22 11:18:06 -04:00
Fernando Sahmkow
d23d504d77 Kernel: Refactor synchronization to better match RE 2020-02-11 18:47:31 -04:00
Fernando Sahmkow
c5aefe42aa Kernel: Change WaitObject to Synchronization object. In order to better reflect RE. 2020-02-11 10:46:25 -04:00
Lioncash
51927bc9dc kernel/physical_core: Remove unused kernel reference member variable
This isn't used within the class, so it can be removed to simplify the
overall interface.

While we're in the same area, we can simplify a unique_ptr reset() call.
2020-01-30 18:29:57 -05:00
Fernando Sahmkow
2d1984c20c System: Address Feedback 2020-01-27 09:54:11 -04:00
Fernando Sahmkow
450341b397 ArmInterface: Delegate Exclusive monitor factory to exclusive monitor interfasce. 2020-01-26 10:28:23 -04:00
Fernando Sahmkow
4d6a86b03f Core: Refactor CPU Management.
This commit moves ARM Interface and Scheduler handling into the kernel.
2020-01-25 18:55:32 -04:00
Fernando Sahmkow
22c6b9fab2 Kernel: Correct behavior of Address Arbiter threads. (#3165)
* Kernel: Correct behavior of Address Arbiter threads.

This corrects arbitration threads to behave just like in Horizon OS.
They are added into a container and released according to what priority
they had when added. Horizon OS does not reorder them if their priority
changes.

* Kernel: Address Feedback.
2019-12-11 10:55:38 -05:00
Lioncash
c3e43c7e81 kernel: Remove unnecessary includes
Over the course of the changes to the kernel code, a few includes are no
longer necessary, particularly with the change over to std::shared_ptr
from Boost's intrusive_ptr.
2019-12-07 22:37:05 -05:00
Lioncash
e7e939104b core/memory; Migrate over SetCurrentPageTable() to the Memory class
Now that literally every other API function is converted over to the
Memory class, we can just move the file-local page table into the Memory
implementation class, finally getting rid of global state within the
memory code.
2019-11-26 21:55:39 -05:00
bunnei
ec0ce96c56
core_timing: Use better reference tracking for EventType. (#3159)
* core_timing: Use better reference tracking for EventType.

- Moves ownership of the event to the caller, ensuring we don't fire events for destroyed objects.
- Removes need for unique names - we won't be using this for save states anyways.
2019-11-26 21:48:56 -05:00
bunnei
9046d4a548
kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects. (#3154)
* kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects.

- See https://github.com/citra-emu/citra/pull/4710 for details.
2019-11-24 20:15:51 -05:00
Fernando Sahmkow
46bb609981 Kernel: Optimize condition variable threads management. 2019-11-21 11:13:29 -04:00
Fernando Sahmkow
2d16507f9f Kernel: Correct behavior of Condition Variables to be more similar to real hardware.
This commit ensures cond var threads act exactly as they do in the real
console. The original implementation uses an RBTree and the behavior of
cond var threads is that at the same priority level they act like a
FIFO.
2019-11-21 10:46:55 -04:00
Fernando Sahmkow
c32520ceb7 Kernel: Reverse global accessor removal. 2019-10-15 11:55:26 -04:00
Fernando Sahmkow
25f8606a6d Kernel Scheduler: Make sure the global scheduler shutdowns correctly. 2019-10-15 11:55:24 -04:00
Fernando Sahmkow
44e09e5f21 Kernel: Correct Results in Condition Variables and Mutexes 2019-10-15 11:55:18 -04:00
Fernando Sahmkow
e05a8c2385 Kernel: Remove global system accessor from WaitObject 2019-10-15 11:55:16 -04:00
Fernando Sahmkow
b49c0dab87 Kernel: Initial implementation of thread preemption. 2019-10-15 11:55:14 -04:00
Fernando Sahmkow
82218c925a Kernel: Style and Corrections 2019-10-15 11:55:12 -04:00
Fernando Sahmkow
57a71f899a Add interfacing to the Global Scheduler 2019-10-15 11:55:07 -04:00
Zach Hilman
fc0bf91a96 kernel: Differentiate kernel and user processes when picking ID
This allows kernel internal type processes to be assigned IDs in the KIP range while userland processes are assigned in the user range.
2019-06-10 00:28:33 -04:00
bunnei
78574e7a47
Merge pull request #2416 from lioncash/wait
kernel/svc: Clean up wait synchronization related functionality
2019-04-24 22:56:08 -04:00
Lioncash
c268ffd831 kernel/thread: Unify wait synchronization types
This is a holdover from Citra, where the 3DS has both
WaitSynchronization1 and WaitSynchronizationN. The switch only has one
form of wait synchronizing (literally WaitSynchonization). This allows
us to throw out code that doesn't apply at all to the Switch kernel.

Because of this unnecessary dichotomy within the wait synchronization
utilities, we were also neglecting to properly handle waiting on
multiple objects.

While we're at it, we can also scrub out any lingering references to
WaitSynchronization1/WaitSynchronizationN in comments, and change them
to WaitSynchronization (or remove them if the mention no longer
applies).
2019-04-17 09:30:56 -04:00
Lioncash
f2331a804a core/cpu_core_manager: Create threads separately from initialization.
Our initialization process is a little wonky than one would expect when
it comes to code flow. We initialize the CPU last, as opposed to
hardware, where the CPU obviously needs to be first, otherwise nothing
else would work, and we have code that adds checks to get around this.

For example, in the page table setting code, we check to see if the
system is turned on before we even notify the CPU instances of a page
table switch. This results in dead code (at the moment), because the
only time a page table switch will occur is when the system is *not*
running, preventing the emulated CPU instances from being notified of a
page table switch in a convenient manner (technically the code path
could be taken, but we don't emulate the process creation svc handlers
yet).

This moves the threads creation into its own member function of the core
manager and restores a little order (and predictability) to our
initialization process.

Previously, in the multi-threaded cases, we'd kick off several threads
before even the main kernel process was created and ready to execute (gross!).
Now the initialization process is like so:

Initialization:
  1. Timers

  2. CPU

  3. Kernel

  4. Filesystem stuff (kind of gross, but can be amended trivially)

  5. Applet stuff (ditto in terms of being kind of gross)

  6. Main process (will be moved into the loading step in a following
                   change)

  7. Telemetry (this should be initialized last in the future).

  8. Services (4 and 5 should ideally be alongside this).

  9. GDB (gross. Uses namespace scope state. Needs to be refactored into a
          class or booted altogether).

  10. Renderer

  11. GPU (will also have its threads created in a separate step in a
           following change).

Which... isn't *ideal* per-se, however getting rid of the wonky
intertwining of CPU state initialization out of this mix gets rid of
most of the footguns when it comes to our initialization process.
2019-04-11 22:11:40 -04:00
Lioncash
e779686a76 kernel: Handle page table switching within MakeCurrentProcess()
Centralizes the page table switching to one spot, rather than making
calling code deal with it everywhere.
2019-04-07 01:12:54 -04:00
bunnei
e796351a0d
Merge pull request #2270 from lioncash/plist
kernel/svc: Implement svcGetProcessList and svcGetThreadList
2019-04-02 21:40:39 -04:00
Lioncash
cb2bce8006 kernel/svc: Implement svcGetProcessList
This service function simply copies out a specified number of kernel
process IDs, while simultaneously reporting the total number of
processes.
2019-04-02 00:47:14 -04:00
Lioncash
d09e98f566 kernel/resource_limit: Remove the name member from resource limits
This doesn't really provide any benefit to the resource limit interface.
There's no way for callers to any of the service functions for resource
limits to provide a custom name, so all created instances of resource
limits other than the system resource limit would have a name of
"Unknown".

The system resource limit itself is already trivially identifiable from
its limit values, so there's no real need to take up space in the object to
identify one object meaningfully out of N total objects.
2019-04-01 16:49:28 -04:00
Lioncash
781ab8407b general: Use deducation guides for std::lock_guard and std::unique_lock
Since C++17, the introduction of deduction guides for locking facilities
means that we no longer need to hardcode the mutex type into the locks
themselves, making it easier to switch mutex types, should it ever be
necessary in the future.
2019-04-01 12:53:47 -04:00
bunnei
f770c17d01
Merge pull request #2266 from FernandoS27/arbitration
Kernel: Fixes to Arbitration and SignalProcessWideKey Management
2019-03-28 21:42:24 -04:00
Lioncash
c5d41fd812 core/core_timing: Make callback parameters consistent
In some cases, our callbacks were using s64 as a parameter, and in other
cases, they were using an int, which is inconsistent.

To make all callbacks consistent, we can just use an s64 as the type for
late cycles, given it gets rid of the need to cast internally.

While we're at it, also resolve some signed/unsigned conversions that
were occurring related to the callback registration.
2019-03-24 18:12:17 -04:00
Fernando Sahmkow
9c7319a4d4 Fix small bug that kept a thread as a condvar thread after being signalled. 2019-03-19 22:43:13 -04:00
Fernando Sahmkow
acbdfdae64 Add CondVar Thread State. 2019-03-19 20:32:47 -04:00
Lioncash
8e510d5afa kernel: Make the address arbiter instance per-process
Now that we have the address arbiter extracted to its own class, we can
fix an innaccuracy with the kernel. Said inaccuracy being that there
isn't only one address arbiter. Each process instance contains its own
AddressArbiter instance in the actual kernel.

This fixes that and gets rid of another long-standing issue that could
arise when attempting to create more than one process.
2019-03-07 23:27:51 -05:00
Lioncash
c161389a0f kernel/address_arbiter: Pass in system instance to constructor
Allows getting rid of reliance on the global accessor functions and
instead operating on the provided system instance.
2019-03-05 15:47:03 -05:00
Lioncash
ec6664f6d6 kernel/address_arbiter: Convert the address arbiter into a class
Places all of the functions for address arbiter operation into a class.
This will be necessary for future deglobalizing efforts related to both
the memory and system itself.
2019-03-05 12:58:26 -05:00
Lioncash
bd983414f6 core_timing: Convert core timing into a class
Gets rid of the largest set of mutable global state within the core.
This also paves a way for eliminating usages of GetInstance() on the
System class as a follow-up.

Note that no behavioral changes have been made, and this simply extracts
the functionality into a class. This also has the benefit of making
dependencies on the core timing functionality explicit within the
relevant interfaces.
2019-02-15 21:50:25 -05:00
Lioncash
48d9d66dc5 core_timing: Rename CoreTiming namespace to Core::Timing
Places all of the timing-related functionality under the existing Core
namespace to keep things consistent, rather than having the timing
utilities sitting in its own completely separate namespace.
2019-02-12 12:42:17 -05:00