/********************************************************************* * * Copyright (C) 1999-2010, Karlsruhe University * Copyright (C) 2008-2009, Volkmar Uhlig, IBM Corporation * * File path: crt0-powerpc.S * Description: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id$ * ********************************************************************/ .section ".text" .align 2 .globl _start _start: mfspr %r24, 0x11e /* bookE processor identifier */ cmpwi %r24, 0 bgt spin_secondary /* Install our stack. */ lis %r1, _mini_stack@ha la %r1, _mini_stack@l(%r1) addi %r1, %r1, -32 /* Point to 0 for the small data area. */ li %r13, 0 /* Jump into C code. */ bl __loader 1: b 1b /* Spin. */ .global entry_secondary entry_secondary: .long -1 spin_secondary: bl 1f 1: mflr %r1 subi %r1,%r1,8 2: dcbi 0,%r1 lwz %r2, 0(%r1) addi %r3,%r2,1 cmpwi %r3,0 beq 2b iccci 0, 0 mtlr %r2 blr /****************************************************************************/ .section ".bss" .align 16 .space 4096 _mini_stack: