Cemu Patch Tool

This is a simple tool that cleans up PowerPC assembly output from GCC and puts it in a Cemu-friendly format. It also inserts setup and teardown code so that your C/C++ code won't impact the CPU state after it returns to game code.

Usage

cemu_patch_tool [ASM file] [patch module name] [hooking address] [output filename]

ASM File

This is the assembly outputted by the compiler. You'll need special compiler flags to emit assembly and remove a bunch of the extra information Cemu doesn't understand.

Patch Module Name

This is just used to identify your patch in the Cemu debugger. Name it something like BOTW_YourModName.

Hooking Address

The instruction at this address will be replaced with a branch instruction. It will save the CPU state onto the stack, run your code, then restore the CPU state and go back to the original game code.

Output Filename

The program will output the final formatted patch file for Cemu to a filename you provide.