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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [cpu/] [or1k/] [rtems.s] - Rev 389
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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
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