Commit Graph
8 Commits
Author SHA1 Message Date
Ryan Houdek b902b8edab Implement small TSC scaling
Games engines are expecting >1Ghz cycle counters. Scale them to work
around the issue.

Resolves the excessive busy waiting in Unreal Engine 5 games.
2024-02-20 12:05:44 -08:00
Ryan Houdek db9b326534 FEXCore: Support disabling CPUID features based on config
Need to be able to disable sha by config.
2023-12-23 22:32:29 -08:00
Ryan Houdek 358bbb51ff CPUID: Removes Init and just uses constructor
No need to wait for initialization on for this anymore.
Ever since Init was refactored to do basically no work, this hasn't been
necessary.

CPUID does need to still be initialized after HostFeatures though, so
need to ensure correct member ordering there.
2023-12-15 18:43:23 -08:00
Ryan Houdek d4361c87ae CPUID: Query and use physical cores upfront
Instead of using the config option, just query and use the result.
2023-11-24 07:02:30 -08:00
Ryan Houdek e9a7ef2534 CPUID: Describe CPUID functions if they return constant state or not
Most CPUID routines return constant data, there are four that don't.
Some CPUID functions also need the leaf descriptor, so we need to
describe that as well.

Functions that don't return constant data:
- function 1Ah - Returns different data depending on current CPU core
- function 8000_000{2,3,4} - Different data based on CPU core

Functions that need leaf constprop:
- 4h, 7h, Dh, 4000_0001h, 8000_001Dh
2023-09-24 17:25:38 -07:00
Ryan Houdek 842c57e221 CPUID: Constify some functions
These don't modify CPUIDEmu state.
2023-09-24 17:25:38 -07:00
Ryan Houdek e4613477b1 FEXCore/Interface/Core: Adds SPDX identifier 2023-09-19 17:33:15 -07:00
Alyssa Rosenzweig af21b8f3c7 Move External/FEXCore/ to FEXCore/
It is not an external component, and it makes paths needlessly long.
Ryan seemed amenable to this when we discussed on IRC earlier.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
2023-08-17 16:32:16 -04:00