loader2 & hello world 2
(c) abu <x@sunkone.cjb.net> http://sunkone.cjb.net/psp/

This is a new program loader for Sony PSP firmware 2.0.
It is based on Toc2rta's h.bin loader and exploit.

Differences:

- After the program code, stack is repaired and the TIFF thread continues,
  no system crash/hang. You can also start a background thread.

- Completely new loader code. Wallpaper PNG contains the program loader.
  Only file name is placed on stack (tif image) because framebuffer can't
  contain filenames (every 4th byte must be zero). All this is in order to
  minimize stack corruption. Source code for creating the PNG is included.

- Completely new TIFF image to do the overflow. It contains only what is
  necessary (150 bytes). Perl code for producing the TIFF is included.

- Load address changed to 0x08556000. The old address probably contained
  some VSH data because clean exit wasn't possible with it. Because of this,
  the old h.bin programs aren't compatible. For this reason, file name
  changed to "a.bin".

- The hello world program shows how to kill some system threads to get
  solid screen without flicker.

How to install:

1) remove any old exploit images from /PSP/PHOTO/
2) copy loader2.png to /PSP/PHOTO/ and set it as wallpaper
3) copy loader2.tif to /PSP/PHOTO
4) go to photo menu --> the loader code will run  ms0:/a.bin