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# file rtems.s

#

#  This file contains the single entry point code for

#  the or1k port of RTEMS.

#

#  Author: Chris Ziomkowski <chris@asics.ws>

#

#  This file is provided "AS IS" without any warranty expressed

#  or implied.

#

#  This file is distributed as part of the RTEMS package. It

#  is governed by the RTEMS copyright and license agreement as

#  stated below:

#

#  COPYRIGHT (c) 1989-1997.

#  On-Line Applications Research Corporation (OAR).

#  Copyright assigned to U.S. Government, 1994.

#

#  The license and distribution terms for this file may in

#  the file LICENSE in this distribution or at

#  http://www.OARcorp.com/rtems/license.html.

#

#

#  This file is designed to work only with a COFF version of the gnu

#  assembler and includes necessary debugging information. Other

#  assemblers will probably fail.

#

.file   "rtems.s"

.text

        .align  4

.proc   _RTEMS

#       .def    _RTEMS

#       .val    _RTEMS

#       .scl    2

#       .type   041

#       .endef

        .global _RTEMS

_RTEMS:

#       .def    .bf

#       .val    .

#       .scl    101

#       .endef

#

# We assume the index to the function to call is stored

# in r12. Simply offset from this and transfer control to

# to the appropriate location. By calculating the offset

# first, loading the high word and then adding the low

# word, we can conserve a register.

#

        l.slli          r12,r12,2

        l.movhi         r12,hi(__Entry_points)

        l.addi          r12,r12,lo(__Entry_points)

        l.lwz           r12,0(r12)

        l.jr            r12

        l.nop

#        .def    .ef

#        .val    .

#        .scl    101

#       .endef

.endproc _RTEMS

#       .def    _RTEMS

#       .val    .

#       .scl    -1

#       .endef