Commit graph

93 commits

Author SHA1 Message Date
Subv
5224cc49c4 Kernel/Mutex: Don't duplicate threads in the mutex waiter list.
Exit from AddMutexWaiter early if the thread is already waiting for a mutex owned by the owner thread.

This accounts for the possibility of a thread that is waiting on a condition variable being awakened twice in a row.

Also added more validation asserts.

This should fix one of the random crashes in Breath Of The Wild.
2018-08-12 16:35:27 -05:00
Lioncash
c4e0c3d76c kernel/vm_manager: Use const where applicable
Makes our immutable state explicit.
2018-08-02 12:21:46 -04:00
bunnei
ff2c1b0a94
Merge pull request #877 from lioncash/remove
kernel: Remove unused object_address_table.cpp/.h
2018-07-31 20:11:39 -07:00
Lioncash
369f6e58aa kernel: Remove unused object_address_table.cpp/.h
These source files were entirely unused throughout the rest of the
codebase. This also has the benefit of getting rid of a global variable
as well.
2018-07-31 11:03:08 -04:00
Lioncash
a2304fad16 kernel: Remove unnecessary includes
Removes unnecessary direct dependencies in some headers and also gets
rid of indirect dependencies that were being relied on to be included.
2018-07-31 10:15:17 -04:00
Mat M
d3fd0351a7
Merge pull request #804 from lioncash/log
svc: Log parameters in SetMemoryAttribute()
2018-07-25 14:43:24 -04:00
Lioncash
c73410bf2c svc: Resolve sign comparison warnings in WaitSynchronization()
The loop's induction variable was signed, but we were comparing against
an unsigned variable.
2018-07-24 09:55:17 -04:00
Lioncash
8e8e906432 svc: Log parameters in SetMemoryAttribute()
Provides slightly more context than only logging out the address value.
2018-07-24 09:46:46 -04:00
Subv
7841447cf0 Kernel/SVC: Perform atomic accesses in SignalProcessWideKey as per the real kernel. 2018-07-22 12:27:24 -05:00
Lioncash
dbfe82773d thread: Convert ThreadStatus into an enum class
Makes the thread status strongly typed, so implicit conversions can't
happen. It also makes it easier to catch mistakes at compile time.
2018-07-19 22:08:56 -04:00
Lioncash
b879fb84a2 svc: Correct always true assertion case in SetThreadCoreMask
The reason this would never be true is that ideal_processor is a u8 and
THREADPROCESSORID_DEFAULT is an s32. In this case, it boils down to how
arithmetic conversions are performed before performing the comparison.

If an unsigned value has a lesser conversion rank (aka smaller size)
than the signed type being compared, then the unsigned value is promoted
to the signed value (i.e. u8 -> s32 happens before the comparison). No
sign-extension occurs here either.

An alternative phrasing:

Say we have a variable named core and it's given a value of -2.

u8 core = -2;

This becomes 254 due to the lack of sign. During integral promotion to
the signed type, this still remains as 254, and therefore the condition
will always be true, because no matter what value the u8 is given it
will never be -2 in terms of 32 bits.

Now, if one type was a s32 and one was a u32, this would be entirely
different, since they have the same bit width (and the signed type would
be converted to unsigned instead of the other way around) but would
still have its representation preserved in terms of bits, allowing the
comparison to be false in some cases, as opposed to being true all the
time.

---

We also get rid of two signed/unsigned comparison warnings while we're
at it.
2018-07-19 15:46:17 -04:00
James Rowe
0d46f0df12 Update clang format 2018-07-02 21:45:47 -04:00
James Rowe
638956aa81 Rename logging macro back to LOG_* 2018-07-02 21:45:47 -04:00
Michael Scire
067ac434ba Kernel/Arbiters: Fix casts, cleanup comments/magic numbers 2018-06-22 00:47:59 -06:00
Michael Scire
5f8aa02584 Add additional missing format. 2018-06-21 21:09:51 -06:00
Michael Scire
8f8fe62a19 Kernel/Arbiters: Initialize arb_wait_address in thread struct. 2018-06-21 05:13:06 -06:00
Michael Scire
4f81bc4e1b Kernel/Arbiters: Mostly implement SignalToAddress 2018-06-21 04:10:11 -06:00
Michael Scire
7e191dccc1 Kernel/Arbiters: Add stubs for 4.x SignalToAddress/WaitForAddres SVCs. 2018-06-21 00:49:43 -06:00
Subv
a3d82ef5d9 Build: Fixed some MSVC warnings in various parts of the code. 2018-06-20 11:39:10 -05:00
bunnei
4ac4b308e4
Merge pull request #572 from Armada651/user-except-stub
svc: Add a stub for UserExceptionContextAddr.
2018-06-18 11:37:13 -04:00
Jules Blok
bf4e2b2f0b svc: Add a stub for UserExceptionContextAddr. 2018-06-18 09:29:11 +02:00
Subv
3957b0c34e Kernel/SVC: Support special core values -2 and -3 in svcSetThreadCoreMask.
Also added some proper error handling.
2018-05-30 21:36:29 -05:00
Subv
2a35a36251 Kernel/SVC: Signal the highest priority threads first in svcSignalProcessWideKey. 2018-05-19 16:58:30 -05:00
Subv
c74f2555b6 Kernel/Threads: Reschedule the proper core when operating on that core's threads. 2018-05-19 16:57:44 -05:00
Subv
fab3dd98fe SVC: Removed unused WaitSynchronization1 function 2018-05-19 16:56:33 -05:00
bunnei
46ec9a9bc9 thread: Rename mask to affinity_masks. 2018-05-10 19:34:53 -04:00
bunnei
8aa5d25f82 threading: Reschedule only on cores that are necessary. 2018-05-10 19:34:52 -04:00
bunnei
d6e3cd9a17 svc: Implement GetThreadCoreMask and SetThreadCoreMask. 2018-05-10 19:34:51 -04:00
bunnei
1c36f2a798 svc: SignalProcessWideKey should apply to all cores. 2018-05-10 19:34:49 -04:00
bunnei
6a890023e9 svc: Implement GetCurrentProcessorNumber. 2018-05-10 19:34:49 -04:00
bunnei
a434fdcb10 core: Implement multicore support. 2018-05-10 19:34:46 -04:00
Lioncash
7c9644646f
general: Make formatting of logged hex values more straightforward
This makes the formatting expectations more obvious (e.g. any zero padding specified
is padding that's entirely dedicated to the value being printed, not any pretty-printing
that also gets tacked on).
2018-05-02 09:49:36 -04:00
Lioncash
3abba08080
string_util: Remove StringFromFormat() and related functions
Given we utilize fmt, we don't need to provide our own functions for formatting anymore
2018-04-29 18:52:33 -04:00
Lioncash
8475496630
general: Convert assertion macros over to be fmt-compatible 2018-04-27 10:04:02 -04:00
Lioncash
40dee76c57
kernel: Migrate logging macros to fmt-compatible ones 2018-04-25 20:32:09 -04:00
bunnei
0214351f4f
Merge pull request #370 from Subv/sync_primitives
Kernel: Reworked the new kernel synchronization primitives.
2018-04-23 16:33:00 -04:00
Subv
46572d027d Kernel: Implemented mutex priority inheritance.
Verified with a hwtest and implemented based on reverse engineering.

Thread A's priority will get bumped to the highest priority among all the threads that are waiting for a mutex that A holds.
Once A releases the mutex and ownership is transferred to B, A's priority will return to normal and B's priority will be bumped.
2018-04-23 11:23:44 -05:00
Subv
be155f4d9d Kernel: Remove unused ConditionVariable class. 2018-04-20 21:04:33 -05:00
Subv
b18ccf9399 Kernel: Properly implemented svcWaitProcessWideKey and svcSignalProcessWideKey
They work in tandem with guest code to provide synchronization primitives along with svcArbitrateLock/Unlock
2018-04-20 21:04:27 -05:00
Subv
e81a2080eb Kernel: Corrected the implementation of svcArbitrateLock and svcArbitrateUnlock.
Switch mutexes are no longer kernel objects, they are managed in userland and only use the kernel to handle the contention case.
Mutex addresses store a special flag value (0x40000000) to notify the guest code that there are still some threads waiting for the mutex to be released. This flag is updated when a thread calls ArbitrateUnlock.

TODO:
* Fix svcWaitProcessWideKey
* Fix svcSignalProcessWideKey
* Remove the Mutex class.
2018-04-20 21:04:25 -05:00
Lioncash
bec05db746 resource_limit: Make ResourceTypes an enum class
Prevents enum identifiers from leaking into the surrounding scope.
2018-04-20 19:41:45 -04:00
Lioncash
d9e316e353 common_funcs: Remove ARRAY_SIZE macro
C++17 has non-member size() which we can just call where necessary.
2018-04-19 22:36:52 -04:00
Hexagon12
e52a87b98a Various service name fixes - part 2 (rebased) (#322)
* Updated ACC with more service names

* Updated SVC with more service names

* Updated set with more service names

* Updated sockets with more service names

* Updated SPL with more service names

* Updated time with more service names

* Updated vi with more service names
2018-04-17 11:37:43 -04:00
bunnei
40bccd74d3 svc: Stub out SetThreadActivity, GetThreadContext. 2018-04-02 23:51:01 -04:00
bunnei
f6893969b3 svc: Stub GetThreadCoreMask. 2018-03-29 21:23:15 -04:00
N00byKing
0e72d0d826 More Warning cleanups 2018-03-19 17:27:04 +01:00
N00byKing
ef875d6a35 Clean Warnings (?) 2018-03-19 17:07:08 +01:00
bunnei
34a29ad051 svc: Use more correct values for GetInfo MapRegion and NewMapRegion. 2018-03-16 18:32:23 -04:00
bunnei
8be7131033 MemoryState: Add additional memory states and improve naming. 2018-03-16 18:32:21 -04:00
bunnei
7d6653268f core: Move process creation out of global state. 2018-03-14 18:42:19 -04:00