/* crt0.S - Startup code for the PowerPC. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
.extern __bss_start
.extern _end
.text
.align 2
.globl _start
_start:
li 2, 0
li 13, 0
/* Stage1 won't zero BSS for us. In other cases, why not do it again? */
lis 6, (__bss_start - 4)@h
ori 6, 6, (__bss_start - 4)@l
lis 7, (_end - 4)@h
ori 7, 7, (_end - 4)@l
subf 7, 6, 7
srwi 7, 7, 2 /* We store 4 bytes at a time. */
mtctr 7
2: stwu 2, 4(6) /* We know r2 is already 0 from above. */
bdnz 2b
bl cmain
1: b 1b
