eglantine-cirakg/src/core/arm/nce/patcher.cpp, branch nx2

nx2: run the guest counter at 31.25 MHz for Switch 2 titles

2026-10-30T06:31:58+00:00

The Switch 2 counter runs at 31.25 MHz and its SDK converts ticks with that constant: Mario Kart World's sdk builds 31,250,000 in nn::os::GetSystemTickFrequency, TickManager::ConvertToTimeSpan and TickManager::ConvertToTick (19.2 MHz appears nowhere). Eglantine counted at the Switch 1 rate for every title, so every tick-based time in a Switch 2 game was off by 1.63x: elapsed times read short, and a deadline of one 60 Hz frame converted to ticks waited ~27 ms. The wall clock now has a guest counter frequency, set at boot: 31.25 MHz for Switch 2 programs, 19.2 MHz otherwise, EDEN_NX2_CNTFRQ= to force one. CNTPCT reads, CNTFRQ_EL0, svcGetSystemTick, thread tick counts and the time services' tick conversions follow it, and the CNTPCT spin detection keeps its ~1.7 us threshold. Mario Kart World, title screen and attract demo, 180 s, same build: frame times unchanged (17-19 ms once warm), process CPU time 848 s instead of 930 s.

[patcher, ro, settings] runtime tls patch (#4492) optimization and nuke toggle (#4502) (#4523)

2026-10-15T10:13:17+00:00

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions). - [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md) - [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability. ------------------- This is a follow up for the biomutant fix. By the time i knew it was shallow, coz i was running patchtext routine even for svc and modules, causing a routine which were needed to run 14 times to run 4000+ instead. Since some perf loss was reported in 30 sep nightly, and it caused ac3r to not boot, we had added a temp toggle, which is now being removed as optimizations + fix are in. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4523 Reviewed-by: lizzie Reviewed-by: MaranBr

[nce, fs] tico support, fix FS bug that would nuke entire 'switch' folder (#4086)

2026-07-23T19:59:55+00:00

Contains the minimal set of functionalities to allow tico installer succeed, and tico work normally EXCEPT for game launching (which me or someone else will investigate later) First three commits are from PR 4012. The other six, kinda dizzy to explain each one. All were implemented based on tico source, switchbrew and libnx. Hopefully the commit messages will do. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4086 Reviewed-by: Lizzie Reviewed-by: Maufeat

[core/core_timing] better MWAITX and WAITPKG delays (#3984)

2026-05-30T19:59:10+00:00

This implements MWAITX and WAITPKG extensions (umonitor, mwait) for CPUs that support them. Reduces wait times and bypasses the timing stuff from the OS that is slow (windows notably). generally it should answer within 0.2 to 0.5 microsecs (since most requests wait for that long). Also does a general rework of static ctors and stuff Signed-off-by: lizzie Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3984 Reviewed-by: MaranBr Reviewed-by: crueter

[common] remove ptr indirection on WallClock (#3864)

2026-05-15T20:06:38+00:00

also devirtualizes manually since compiler doesn't do it with LTO Signed-off-by: lizzie Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3864 Reviewed-by: crueter

[core/loader] prevent program_image reallocations in NSO+KIP loading methods (#3639)

2026-02-28T00:06:33+00:00

also changes some methods to std::span<> as well, but mainly std::vector<> in the NSO/KIP loading stuff is not needed to be memcpy'ed and memmove'd around this should save a marginal amount of loading time (RDR1) Signed-off-by: lizzie Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3639 Reviewed-by: DraVee Reviewed-by: Maufeat Co-authored-by: lizzie Co-committed-by: lizzie

[android, nce] Remove LRU-Cache (#3500)

2026-02-10T02:45:02+00:00

This PR removes the obsolete logic of LRU-cache within, removing old and dead code, allows Android to avoid unnecesary usage of memory caching, aside to prevent some old bugs to arise in other systems that allows NCE, improves a small margin of performance and makes memory ram consumption overall better, by 300 - 500mb, revealing that part of the code was still active, even if LRU wasn't enabled. Signed-off-by: lizzie Signed-off-by: CamilleLaVey Co-authored-by: CamilleLaVey Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3500 Reviewed-by: DraVee Reviewed-by: CamilleLaVey Co-authored-by: lizzie Co-committed-by: lizzie

[nce] add split patch mode to support modules bigger than 128MB (#3489)

2026-02-07T21:59:38+00:00

nce patcher was extended to support modules larger than 128MB due to ARM64 branch limit. now added a pre-patch and (existing) post-patch module code. Allowwing MRS/MSR/SVC handler to remain within branch branch range Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3489 Reviewed-by: MaranBr Reviewed-by: CamilleLaVey Co-authored-by: Maufeat Co-committed-by: Maufeat

[common] replace Common::BitCast with libc++ provided one (#2774)

2025-10-22T00:56:28+00:00

Signed-off-by: lizzie Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2774 Reviewed-by: MaranBr Reviewed-by: crueter Co-authored-by: lizzie Co-committed-by: lizzie

[cmake] enable clang-cl and WoA builds (#348)

2025-09-09T18:47:49+00:00

Compilation and CMake fixes for both Windows on ARM and clang-cl, meaning Windows can now be built on both MSVC and clang on both amd64 and aarch64. Compiling on clang is *dramatically* faster so this should be useful for CI. Co-authored-by: crueter Co-authored-by: crueter Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/348 Reviewed-by: CamilleLaVey Reviewed-by: crueter Co-authored-by: lizzie Co-committed-by: lizzie