The VSH launches games through the VSH variants of LoadExecForKernel,
whose NIDs most firmware versions changed. Where HLE doesn't know the NID,
the firmware's own loadexec.prx ran instead, and the launch got nowhere,
so homebrew launched from the XMB only on firmware 3.73 and older, and
6.60/6.61.
Each variant is the same small wrapper, loadExecVSH(apiType, file, opt,
0x10000), so when loadexec.prx exports one we don't know, look at the API
type it loads into a0, and for Disc (0x120) and MS2 (0x141), overwrite it
with a call to our HLE implementation.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
