What is a demangler?
Some compilers encode information into the symbol name. Getting those information back in form of a readable function signature is demangling. Read the C part on Wikipedia.
What is GHS?
GHS is the Wii U's compiler.
What is this even good for?
It helps reverse engineering and developing for Wii U.
Where do I download the application?
Check the attachment below.
Where do I get the source code?
Here.
How do I compile it?
Using Visual Studio by opening the ghs-demangle.sln file and building the project.
How do I use this?
It's a command line application:
To interactively demangle symbol names, you have to use the "-" command line argument:
... followed by the symbol name from an RPL you want to demangle, for example:
Result:
Awesome. The once "trashy and spammy" symbol name is now a useful function signature to work with. Also thanks to @NWPlayer123 for mentioning the interactive mode which is what you want to use. 
NOTE: The attached code may not be the compiled version of the latest demangler source. Check the source code repository linked above for updates.
Some compilers encode information into the symbol name. Getting those information back in form of a readable function signature is demangling. Read the C part on Wikipedia.
What is GHS?
GHS is the Wii U's compiler.
What is this even good for?
It helps reverse engineering and developing for Wii U.
Where do I download the application?
Check the attachment below.
Where do I get the source code?
Here.
How do I compile it?
Using Visual Studio by opening the ghs-demangle.sln file and building the project.
How do I use this?
It's a command line application:
Code:
D:\Consoles\WiiU\Applications\PC\GHS Demangler\bin\Debug>ghs-demangle.exe
ghs-demangle [OPTION].. [--] [FILE]..
Demangles all symbols in FILE(s) to standard output.
Error messages are displayed on standard error.
Use "-" as file for standard input.
--help Display this help message and exit.
--version Display version message and exit.
D:\Consoles\WiiU\Applications\PC\GHS Demangler\bin\Debug>
Code:
ghs-demangle -
Code:
R_StableSortSurfs_NonAuto__tm__43_26GfxSortCloudSurfsInterface12GfxCloudSurf__FPCZ2ZUiPZ2Z_Ui
Code:
unsigned int R_StableSortSurfs_NonAuto<class Z1 = GfxSortCloudSurfsInterface, class Z2 = GfxCloudSurf>(Z2 const *, unsigned int, Z2 *)NOTE: The attached code may not be the compiled version of the latest demangler source. Check the source code repository linked above for updates.
Last edited by BullyWiiPlaza,
