Commit Graph

240 Commits

Author SHA1 Message Date
cb198d7985 core/hle/kernel: Split transfer memory handling out into its own class
Within the kernel, shared memory and transfer memory facilities exist as
completely different kernel objects. They also have different validity
checking as well. Therefore, we shouldn't be treating the two as the
same kind of memory.

They also differ in terms of their behavioral aspect as well. Shared
memory is intended for sharing memory between processes, while transfer
memory is intended to be for transferring memory to other processes.

This breaks out the handling for transfer memory into its own class and
treats it as its own kernel object. This is also important when we
consider resource limits as well. Particularly because transfer memory
is limited by the resource limit value set for it.

While we currently don't handle resource limit testing against objects
yet (but we do allow setting them), this will make implementing that
behavior much easier in the future, as we don't need to distinguish
between shared memory and transfer memory allocations in the same place.
2019-03-13 06:04:44 -04:00
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
b7f331afa3 kernel/svc: Move address arbiter signaling behind a unified API function
Similar to how WaitForAddress was isolated to its own function, we can
also move the necessary conditional checking into the address arbiter
class itself, allowing us to hide the implementation details of it from
public use.
2019-03-07 23:27:47 -05:00
0209de123b kernel/svc: Move address arbiter waiting behind a unified API function
Rather than let the service call itself work out which function is the
proper one to call, we can make that a behavior of the arbiter itself,
so we don't need to directly expose those implementation details.
2019-03-07 23:27:20 -05:00
ed0bdcc638 Merge pull request #2197 from lioncash/include
core/hle/ipc: Remove unnecessary includes
2019-03-06 21:55:16 -05:00
75b417489a Merge pull request #2199 from lioncash/arbiter
kernel/address_arbiter: Convert the address arbiter into a class
2019-03-06 15:55:56 -05:00
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
02bc9e9de1 core/hle/ipc: Remove unnecessary includes
Removes a few inclusion dependencies from the headers or replaces
existing ones with ones that don't indirectly include the required
headers.

This allows removing an inclusion of core/memory.h, meaning that if the
memory header is ever changed in the future, it won't result in
rebuilding the entirety of the HLE services (as the IPC headers are used
quite ubiquitously throughout the HLE service implementations).
2019-03-05 09:53:38 -05:00
0be8fffc99 svc: Migrate address range checking functions to VMManager
Provides a bit of a more proper interface for these functions.
2019-03-04 16:32:03 -05:00
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
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
7842536ddb kernel/svc: Log out uncaught C++ exceptions from svcBreak
Looking into the implementation of the C++ standard facilities that seem
to be within all modules, it appears that they use 7 as a break reason
to indicate an uncaught C++ exception.

This was primarily found via the third last function called within
Horizon's equivalent of libcxxabi's demangling_terminate_handler(),
which passes the value 0x80000007 to svcBreak.
2019-01-26 21:19:13 -05:00
b4242633ad kernel/svc: Correct misleading error message within CreateThread()
This is a bounds check to ensure that the thread priority is within the
valid range of 0-64. If it exceeds 64, that doesn't necessarily mean
that an actual priority of 64 was expected (it actually means whoever
called the function screwed up their math).

Instead clarify the message to indicate the allowed range of thread
priorities.
2018-12-30 21:29:38 -05:00
3a8d38be7e kernel/svc: Sanitize core number and thread priorities in CreateThread()
Now that we handle the kernel capability descriptors we can correct
CreateThread to properly check against the core and priority masks
like the actual kernel does.
2018-12-30 21:23:56 -05:00
8769604144 kernel/process: Rename GetAllowedProcessorMask() and GetAllowedThreadPriorityMask()
Makes them consistent with their kernel capability counterparts.
2018-12-30 21:09:46 -05:00
205e6d3b97 kernel/svc: Simplify thread core ID sanitizing in CreateThread
Rather than use a switch here, this can be collapsed into a simple range
check, which is a little easier on the eyes.
2018-12-30 20:59:54 -05:00
e5dfbe22ee Merge pull request #1956 from lioncash/process-thread
kernel/process: Start the main thread using the specified ideal core
2018-12-30 20:32:41 -05:00
331c252509 Merge pull request #1847 from ogniK5377/backtrace-break
Print backtrace on svcBreak
2018-12-29 22:58:13 -05:00
f80bc712ea kernel: Rename 'default' CPU core to 'ideal' core
This makes the naming more closely match its meaning. It's just a
preferred core, not a required default core. This also makes the usages
of this term consistent across the thread and process implementations.
2018-12-27 21:48:49 -05:00
fbeaa330a3 kernel/process: Remove most allocation functions from Process' interface
In all cases that these functions are needed, the VMManager can just be
retrieved and used instead of providing the same functions in Process'
interface.

This also makes it a little nicer dependency-wise, since it gets rid of
cases where the VMManager interface was being used, and then switched
over to using the interface for a Process instance. Instead, it makes
all accesses uniform and uses the VMManager instance for all necessary
tasks.

All the basic memory mapping functions did was forward to the Process'
VMManager instance anyways.
2018-12-27 19:08:47 -05:00
ae582b6669 Merge pull request #1849 from encounter/svcSetThreadActivity
svc: Implement SetThreadActivity (thread suspension)
2018-12-26 15:54:14 -05:00
59ac3346eb Merge pull request #1925 from lioncash/pid
kernel/{process, thread}: Amend behavior related to IDs
2018-12-21 13:45:27 -05:00
b74eb88c68 kernel/svc: Handle thread handles within GetProcessId
If a thread handle is passed to svcGetProcessId, the kernel attempts to
access the process ID via the thread's instance's owning process.

Technically, this function should also be handling the kernel debug
objects as well, however we currently don't handle those kernel objects
yet, so I've left a note via a comment about it to remind myself when
implementing it in the future.
2018-12-19 12:16:15 -05:00
caab838bdb svc: Implement svcSetMemoryAttribute
With all the basic backing functionality implemented, we can now unstub
svcSetMemoryAttribute.
2018-12-19 10:59:40 -05:00
0906302ca9 kernel/svc: Correct output parameter for svcGetThreadId
The service call uses a 64-bit value, just like svcGetProcessId. This
amends the function signature accordingly.
2018-12-18 22:38:26 -05:00
43e1189688 kernel/svc: Correct output parameter for svcGetProcessId
svcGetProcessId's out parameter is a pointer to a 64-bit value, not a
32-bit one.
2018-12-18 22:30:56 -05:00
08d5663cb8 Moved backtrace to ArmInterface 2018-12-19 14:10:51 +11:00
2f2fc47af2 Merge pull request #1732 from DarkLordZach/yield-types
svc: Implement yield types 0 and -1
2018-12-15 00:28:12 -05:00
1a23970d17 Merge pull request #1899 from lioncash/state
vm_manager/svc: Modify MemoryState enum, and correct error handling for svcQueryMemory
2018-12-14 15:30:02 -05:00
b79f086613 svc: Enable svcQueryProcessMemory
svcQueryProcessMemory is trivial to implement, given all the behavior
necessary for it is present, it just needs a handler for it.
2018-12-12 15:45:05 -05:00
09a219d5b4 svc: Write out the complete MemoryInfo structure in QueryProcessMemory
In the previous change, the memory writing was moved into the service
function itself, however it still had a problem, in that the entire
MemoryInfo structure wasn't being written out, only the first 32 bytes
of it were being written out. We still need to write out the trailing
two reference count members and zero out the padding bits.

Not doing this can result in wrong behavior in userland code in the following
scenario:

MemoryInfo info;                 // Put on the stack, not quaranteed to be zeroed out.
svcQueryMemory(&info, ...);

if (info.device_refcount == ...) // Whoops, uninitialized read.

This can also cause the wrong thing to happen if the user code uses
std::memcmp to compare the struct, with another one (questionable, but
allowed), as the padding bits are not guaranteed to be a deterministic
value. Note that the kernel itself also fully zeroes out the structure
before writing it out including the padding bits.
2018-12-12 15:44:58 -05:00
d8deb39b83 svc: Handle memory writing explicitly within QueryProcessMemory
Moves the memory writes directly into QueryProcessMemory instead of
letting the wrapper function do it. It would be inaccurate to allow the
handler to do it because there's cases where memory shouldn't even be
written to. For example, if the given process handle is invalid.

HOWEVER, if the memory writing is within the wrapper, then we have no
control over if these memory writes occur, meaning in an error case, 68
bytes of memory randomly get trashed with zeroes, 64 of those being
written to wherever the memory info address points to, and the remaining
4 being written wherever the page info address points to.

One solution in this case would be to just conditionally check within
the handler itself, but this is kind of smelly, given the handler
shouldn't be performing conditional behavior itself, it's a behavior of
the managed function. In other words, if you remove the handler from the
equation entirely, does the function still retain its proper behavior?
In this case, no.

Now, we don't potentially trash memory from this function if an invalid
query is performed.
2018-12-12 15:43:31 -05:00
a8cc03502b vm_manager: Migrate memory querying to the VMManager interface
Gets rid of the need to directly access the managed VMAs outside of the
memory manager itself just for querying memory.
2018-12-12 15:07:30 -05:00
366985ca92 vm_manager: Amend MemoryState enum members
Amends the MemoryState enum to use the same values like the actual
kernel does. Also provides the necessary operators to operate on them.
This will be necessary in the future for implementing
svcSetMemoryAttribute, as memory block state is checked before applying
the attribute.
2018-12-12 14:03:50 -05:00
ae390ad5a2 Fix Process object leak on emulation stop
The Process object kept itself alive indefinitely because its handle_table
contains a SharedMemory object which owns a reference to the same Process object,
creating a circular ownership scenario.

Break that up by storing only a non-owning pointer in the SharedMemory object.
2018-12-12 17:25:56 +01:00
74242a8fb4 Merge pull request #1876 from lioncash/vma
vm_manager: Make vma_map private
2018-12-10 10:09:50 -05:00
d4c1b9d311 vm_manager: Make vma_map private
This was only ever public so that code could check whether or not a
handle was valid or not. Instead of exposing the object directly and
allowing external code to potentially mess with the map contents, we
just provide a member function that allows checking whether or not a
handle is valid.

This makes all member variables of the VMManager class private except
for the page table.
2018-12-06 15:02:17 -05:00
e6f7825a24 svc: Avoid incorrect fast yield condition 2018-12-04 22:11:32 -05:00
2f253986df kernel/svc: Correct behavior of svcResetSignal()
While partially correct, this service call allows the retrieved event to
be null, as it also uses the same handle to check if it was referring to
a Process instance. The previous two changes put the necessary machinery
in place to allow for this, so we can simply call those member functions
here and be done with it.
2018-12-04 20:14:59 -05:00
8ea1f28614 kernel/svc: Remove unused header inclusion 2018-12-04 15:48:20 -05:00
a543c35962 kernel/svc: Implement svcSignalEvent()
This function simply does a handle table lookup for a writable event
instance identified by the given handle value. If a writable event
cannot be found for the given handle, then an invalid handle error is
returned. If a writable event is found, then it simply signals the
event, as one would expect.
2018-12-04 15:47:59 -05:00
2a1f59b301 kernel/svc: Implement svcCreateEvent()
svcCreateEvent operates by creating both a readable and writable event
and then attempts to add both to the current process' handle table.

If adding either of the events to the handle table fails, then the
relevant error from the handle table is returned.

If adding the readable event after the writable event to the table
fails, then the writable event is removed from the handle table and the
relevant error from the handle table is returned.

Note that since we do not currently test resource limits, we don't check
the resource limit table yet.
2018-12-04 15:47:55 -05:00
d533767623 Merge pull request #1853 from lioncash/event
kernel/object: Amend handle types to distinguish between readable and writable events
2018-12-04 12:25:40 -05:00
5eb057f422 kernel/object: Amend handle types to distinguish between readable and writable events
Two kernel object should absolutely never have the same handle ID type.
This can cause incorrect behavior when it comes to retrieving object
types from the handle table. In this case it allows converting a
WritableEvent into a ReadableEvent and vice-versa, which is undefined
behavior, since the object types are not the same.

This also corrects ClearEvent() to check both kernel types like the
kernel itself does.
2018-12-04 02:20:47 -05:00
312690b450 kernel/svc: Implement the resource limit svcGetInfo option
Allows a process to register the resource limit as part of its handle
table.
2018-12-04 01:50:30 -05:00
3e75175d02 svc: Implement SetThreadActivity (thread suspension) 2018-12-04 01:23:50 -05:00
b330b495dc [Kernel::CreateThread] Match format specifiers to LOG_TRACE's arguments 2018-12-04 05:13:50 +02:00
ddf5903cd9 scheduler: Avoid manual Reschedule call
This will automatically occur anyway when PrepareReschedule is called
2018-12-03 21:22:09 -05:00
9f1ac96afa Merge pull request #1840 from lioncash/info
svc: Reorganize svcGetInfo, handle more error cases for existing implemented info categories
2018-12-03 18:46:22 -05:00
b5af41a07b scheduler: Only work steal higher priority threads from other cores 2018-12-03 17:29:30 -05:00