To quote from xorloser's Web site linked above:
This is a PS3 loader for http://www.hex-rays.com/idapro/idadown.htm, it lets you open PS3 elf/self/prx/sprx files in IDA. I highly recommend you use this with the http://www.xorloser.com/PPCAltivec%20Plugin%20for%20IDA%20v5.2.rar also available on this site.
THIS DOES NOT DECRYPT ANY FILES !!!! That means that for now this loader will ONLY work on unencrypted files. There are a few such files "in the wild" that have been found on Sony update servers and such.
As well as loading the supported PS3 filetypes in both 32bit and 64bit vesions of IDA this also resolves and sets up all imports, exports and syscalls. It also only supports PS3 PPU files as the PS3 SPU CPU is not supported by IDA at this time.
More PlayStation 3 News...