Commit Graph

14 Commits

Author SHA1 Message Date
comex d7c532d889 Fixes and workarounds to make UBSan happier on macOS
There are still some other issues not addressed here, but it's a start.

Workarounds for false-positive reports:

- `RasterizerAccelerated`: Put a gigantic array behind a `unique_ptr`,
  because UBSan has a [hardcoded limit](https://stackoverflow.com/questions/64531383/c-runtime-error-using-fsanitize-undefined-object-has-a-possibly-invalid-vp)
  of how big it thinks objects can be, specifically when dealing with
  offset-to-top values used with multiple inheritance.  Hopefully this
  doesn't have a performance impact.

- `QueryCacheBase::QueryCacheBase`: Avoid an operation that UBSan thinks
  is UB even though it at least arguably isn't.  See the link in the
  comment for more information.

Fixes for correct reports:

- `PageTable`, `Memory`: Use `uintptr_t` values instead of pointers to
  avoid UB from pointer overflow (when pointer arithmetic wraps around
  the address space).

- `KScheduler::Reload`: `thread->GetOwnerProcess()` can be `nullptr`;
  avoid calling methods on it in this case.  (The existing code returns
  a garbage reference to a field, which is then passed into
  `LoadWatchpointArray`, and apparently it's never used, so it's
  harmless in practice but still triggers UBSan.)

- `KAutoObject::Close`: This function calls `this->Destroy()`, which
  overwrites the beginning of the object with junk (specifically a free
  list pointer).  Then it calls `this->UnregisterWithKernel()`.  UBSan
  complains about a type mismatch because the vtable has been
  overwritten, and I believe this is indeed UB.  `UnregisterWithKernel`
  also loads `m_kernel` from the 'freed' object, which seems to be
  technically safe (the overwriting doesn't extend as far as that
  field), but seems dubious.  Switch to a `static` method and load
  `m_kernel` in advance.
2023-07-15 12:00:28 -07:00
Kyle Kienapfel 14e9de6678 code: dodge PAGE_SIZE #define
Some header files, specifically for OSX and Musl libc define PAGE_SIZE to be a number
This is great except in yuzu we're using PAGE_SIZE as a variable

Specific example
`static constexpr u64 PAGE_SIZE = u64(1) << PAGE_BITS;`

PAGE_SIZE PAGE_BITS PAGE_MASK are all similar variables.
Simply deleted the underscores, and then added YUZU_ prefix

Might be worth noting that there are multiple uses in different classes/namespaces
This list may not be exhaustive

Core::Memory   12 bits (4096)
QueryCacheBase 12 bits
ShaderCache    14 bits (16384)
TextureCache   20 bits (1048576, or 1MB)

Fixes #8779
2022-08-19 16:08:40 -07:00
Morph 99ceb03a1c general: Convert source file copyright comments over to SPDX
This formats all copyright comments according to SPDX formatting guidelines.
Additionally, this resolves the remaining GPLv2 only licensed files by relicensing them to GPLv2.0-or-later.
2022-04-23 05:55:32 -04:00
ReinUsesLisp 7b0d8bd1fb rasterizer: Update pages in batches 2021-06-11 17:27:17 +02:00
bunnei 4b95b0df97 video_core: rasterizer_cache: Use u16 for cached page count.
- Greatly reduces the risk of overflow, at the cost of doubling the size of this array.
2021-05-27 14:47:24 -07:00
bunnei a9d24b0df3 video_core: rasterizer_accelerated: Fix un/signed mismatch. 2021-03-12 21:52:49 -08:00
bunnei 50ee9c46ab video_core: rasterizer_accelerated: Fix delta check ordering. 2021-03-02 17:48:02 -08:00
bunnei 6ab839462c video_core: rasterizer_accelerated: Improve error handling & fix implicit conversion. 2021-03-02 17:44:02 -08:00
bunnei 94da1e8a7e video_core: rasterizer_accelerated: Use a flat array instead of interval_map for cached pages.
- Uses a fixed 64MB for the cache instead of an ever growing map.
- Slightly faster by using atomics instead of a single mutex for access.
- Thanks for Rodrigo for the idea.
2021-03-02 16:57:53 -08:00
bunnei 4caff51710 core: memory: Move to Core::Memory namespace.
- helpful to disambiguate Kernel::Memory namespace.
2020-04-17 00:59:28 -04:00
Joel Holdsworth e9faa1617c Added missing include 2019-12-11 18:11:49 +00:00
Lioncash 849581075a core/memory: Migrate over RasterizerMarkRegionCached() to the Memory class
This is only used within the accelerated rasterizer in two places, so
this is also a very trivial migration.
2019-11-26 21:55:38 -05:00
Lioncash 536fc7f0ea core: Prepare various classes for memory read/write migration
Amends a few interfaces to be able to handle the migration over to the
new Memory class by passing the class by reference as a function
parameter where necessary.

Notably, within the filesystem services, this eliminates two ReadBlock()
calls by using the helper functions of HLERequestContext to do that for
us.
2019-11-26 21:55:37 -05:00
ReinUsesLisp bd2aff3e26
rasterizer_accelerated: Add intermediary for GPU rasterizers
Add an intermediary class that implements common functions across GPU
accelerated rasterizers. This avoids code repetition on different
backends.
2019-10-27 03:40:08 -03:00