1 # Copyright 2008-2009 Segher Boessenkool <segher@kernel.crashing.org>
2 # Copyright 2011 Bernhard Urban <lewurm@gmail.com>
3 # This code is licensed to you under the terms of the GNU GPL, version 2;
4 # see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
9 # The return addr for the nintendo loader is a bit different as for 3rd
10 # party loaders. In fact, it depends which value is set by the apploader at
12 # - 0x0: return address is 0x90394140 (some 3rd party loader, e.g. gecko os)
13 # - 0x23: return address is 0x90394000 (set by the sysmenu loader by nintendo)
14 # to make both work, we insert some no op's here
15 .fill (0x150/0x4), 4, 0x60000000
17 # Set up a stack frame.
18 lis 1,0x8080 ; li 0,0 ; stwu 0,-64(1)
20 # Stop audio and video.
21 lis 0,audio_stop@h ; ori 0,0,audio_stop@l ; mtctr 0 ; bctrl
22 lis 0,video_stop@h ; ori 0,0,video_stop@l ; mtctr 0 ; bctrl
24 # Move code into place; a generous 32kB, starting at 64kB in
27 lis 3,main@h ; ori 3,3,main@l ; addi 5,3,-4
28 lis 4,0x8059 ; ori 4,4,0x3f1c ; lwz 4,0(4) ; addi 4,4,-4
29 addis 4,4,1 ; addi 4,4,end-start
31 0: lwzu 0,4(4) ; stwu 0,4(5) ; bdnz 0b
34 li 0,0x0400 ; mtctr 0 ; mr 5,3
35 0: dcbst 0,5 ; sync ; icbi 0,5 ; addi 5,5,0x20 ; bdnz 0b