# Copyright 2008-2009 Segher Boessenkool # This code is licensed to you under the terms of the GNU GPL, version 2; # see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt .globl _start _start: # Disable interrupts, enable FP. mfmsr 3 ; rlwinm 3,3,0,17,15 ; ori 3,3,0x2000 ; mtmsr 3 ; isync # Setup stack. lis 1,_stack_top@ha ; addi 1,1,_stack_top@l ; li 0,0 ; stwu 0,-64(1) # Clear BSS. lis 3,__bss_start@ha ; addi 3,3,__bss_start@l li 4,0 lis 5,__bss_end@ha ; addi 5,5,__bss_end@l ; sub 5,5,3 bl memset # Go! bl main # If it returns, hang. Shouldn't happen. b .