/****************************************************************************
*
* Copyright (C) 2002-2003, Karlsruhe University
*
* File path: user/serv/sigma0/crt0-powerpc.S
* Description: PowerPC startup code for Sigma 0.
*
* 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: crt0-powerpc.S,v 1.6.4.1 2003/09/24 19:13:55 skoglund Exp $
*
***************************************************************************/
.section ".data"
.align 2
.globl _l4_utcb
_l4_utcb:
.long 0
.section ".text"
.align 2
.globl _start
_start:
/* Install our stack. */
lis %r1, _sigma0_stack_top@ha
la %r1, _sigma0_stack_top@l(%r1)
addi %r1, %r1, -32
/* Point to 0 for the small data area. */
li %r13, 0
/* Save the utcb pointer handed us by the kernel in r2. */
lis %r10, _l4_utcb@ha
la %r10, _l4_utcb@l(%r10)
stw %r2, 0(%r10)
bl __L4_Init
/* Jump into C code. */
bl sigma0_main
1: b 1b /* Spin. */
/****************************************************************************/
.section ".bss"
.globl _sigma0_stack_bottom
.globl _sigma0_stack_top
_sigma0_stack_bottom:
.lcomm _sigma0_stack, SIGMA0_STACK_SIZE, 16
_sigma0_stack_top: