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.
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
- Add support for saving screen filters color temperature and NTP timezone offset (you still need to go to misc->save config)
- some advanced options moved to "in ini file only"; "patch games" is now enabled by default
- ntp: fix support for UTC+12 to +14
- remove deprecated custom svc 0x2e
The BPS format allows distributing patches that are smaller and that do
not contain copyrighted content if data is relocated
(unlike non-trivial IPS patches).
This is essential for games such as Majora's Mask 3D that have three
barely different code revisions. Supporting all three versions would
demand an unreasonable amount of work; with BPS patches only one
version has to be supported.
The patcher is written in C++ in order to make it possible to share the
implementation with Citra and because a C version would be a lot more
ugly and tedious to write. The patcher is non-intrusive for the rest of
the codebase and self-contained so hopefully that isn't an issue.
This adds roughly ~0x500 bytes of code to the loader sysmodule.
Code looks reasonably optimised (in IDA). Tested and works on an o3DS.
