This was a long-standing bug since Luma3DS v8.0.
If you changed the homebrew title and didn't immediately reboot, then
the ExHeader during termination would not match the ExHeader that was
was used for loading the process, and thus sysmodule process refcounts
would get all messed up.
The obvious solution to this is to ensure no application is running
while changing the hbldr titleID (hence the changes in custom PM).
This was quite possibly one of the cause of homebrew failing to load
when using N3DS H&S.
... even when HPs aren't inserted.
This is aimed at people using Bluetooth audio hw mods.
There are some software limitations, please read the INI/option
description.
Closes#1828.
N3DS-only option. See config.ini for details and context. This should
make very demanding games (those which already use 3x clockrate and L2C
by default, like Pokémon US/UM) between 5 to 15% faster. Not widely
tested, and can potentially break some games and other apps.
When "load external firms and modules" is enabled, Loader will load the
sysmodule from /luma/sysmodule/<titleid>.cxi (all uppercase, and with
the N3DS title ID bit if relevant) and skip patching. Note that this is
a title ID here, not a process name (unlike what we do for KIPs).
While this is aimed at enabling people to easily load replacements for
official sysmodules, you can load your own custom sysmodules that don't
correspond to anything installed. You can use gdb to do so:
set remote exec-file <tid>
run
Not tested (except for HM which is known to work).
And restrict code.bin and exheader.bin to when *both* "external firm
and modules" and "game patching" are enabled.
This commits adds an "Advanced configuration" option to screen filters,
where CCT, color gamma, contrast and "brightness" can be fine-tuned,
instead of just using a preset.
Persistence in config.ini TBD in a later commit.
- transform some error codes into "NAND damaged" or "Gamecard removed"
like official errdisp does
- fix bug in SetUserString
- add more info to logfile (/luma/errdisp.txt)
For stuff like testing PASLR, *hax2x, khc3ds, etc.
Also fix a corner-case bug when changing the 3dsx app from itself to
itself, if its TID corresponds to the default.
This being said, neither legacy FIRM nor DSiWare actually support
EmuNAND; installing the same TWL title on both SysNAND and EmuNAND and
then launch it from EmuNAND will work though.
It is only when exiting AGB firm that we want to boot SysNAND no matter
what, because the save file has been written on a partition in SysNAND.
This is mainly to ensure we reboot to the proper NAND in case we reboot.
Add config option to autoboot into 3DS and DSi homebrew menu, without
going through Home Menu (nor launching it).
For 3DS homebrew, this requires homebrew built with libctru v2.0.0 or
later (v2.0.0 was released 2.5y ago).
We simulate a "reboot into title" to achieve this. This being said, when
launching stuff like Pokemon US/UM on O3DS, Home Menu reboots into
itself and not the game directly. This will cause Home Menu to crash if
you use this feature and configure it to use a non-default memory layout
(but if you don't, Home Menu will work just fine).
Caching exheader for applications launched through Home Menu has very
little benefit, as UnregisterProgram is called a lot, and, for 3DSX,
boot.3dsx/target 3DSX can be changed at any time.
Faithfully implement the PASLR algorithm official Loader
uses (it's not very good). Physical address space layout
randomization means that the layout of the pages in physical
memory are randomized, but doens't randomize the virtual addresses.
Also refactor some parts of our Loader impl a little more.
Let's not pretend in 2022 that it needed things from rosalina sysmodule
- it did not.
This moves 3DSX loading from Rosalina to Loader, and also removes all
the dependencies Loader had to other Luma3DS components (if kernel ext.
is missing, a default config will be used). This means that, as long as
you replace Loader to the one in here, you will be able to properly load
3DSX files.
Changes:
- hb:ldr is now hosted in loader
- hb:ldr LoadProcess, PatchExHeaderInfo, DebugNextApplicationByForce:
all removed
- fix a bug where some malformed 3DSX files were not rejected
- grant access to CONFIG11 registers to 3DSX homebrew
- move dirty homebrew chainload (when HM. isn't loaded nor loadable) to
pm
- pm:dbg (ext.) PrepareToChainloadHomebrew: removed
Upgrade process always copied sdmc:/boot.firm to nand:/boot.firm even if
Luma3DS was chainloaded from another path.
Fix this by copying from argv[0], if Luma3DS was launched from the SD
card.
Also use "sdmc:" and "nand:" instead of "0:" and "1:" when using FatFS.
Closes#1776.
This stubs checks in SvcCreateThread and SvcSetProcessIdealProcessor
that applied when creating threads on core2 and core3. This allows
non-sysmodules to create threads on core3.
Please note, core2 access was already being automatically granted to
3dsx apps for a long time (this is controlled through a kernel flag),
and other apps that needed it had that flag too.
This commit thus changes nothing for all these applications.
Do not create threads on core3 unless you know exactly what you're doing.
On N3DS, gsp (GPU sysmodule) depends on qtm (head-tracking sysmodule) which
runs many threads at very high priority on core3. Running code that needs the
GPU (including printf) on core3 can thus result in thread starvation /
deadlock.
If you just need an extra application core, just use core2 as it is intended
for that exact purpose and is by default completely idle.
Closes#1668
