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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [cpu/] [sh/] [rtems.c] - Rev 593
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/* * This file contains the single entry point code for * the SH implementation of RTEMS. * * NOTE: This is supposed to be a .S or .s file NOT a C file. * * NOTE: UNTESTED, very likely this does not not work. * * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de) * * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany * * 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. * * * COPYRIGHT (c) 1998. * On-Line Applications Research Corporation (OAR). * Copyright assigned to U.S. Government, 1994. * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.OARcorp.com/rtems/license.html. * * $Id: rtems.c,v 1.2 2001-09-27 11:59:30 chris Exp $ */ /* * This is supposed to be an assembly file. This means that system.h * and cpu.h should not be included in a "real" rtems file. */ /* #include <rtems/system.h> */ /* #include <rtems/score/cpu.h> */ /* #include "asm.h" */ /* * This should work but due to a bug in rtems building scheme it doesn't work */ /* #include <rtems/directives.h> */ extern void* _Entry_points[] ; /* * RTEMS * * This routine jumps to the directive indicated in the * CPU defined register. This routine is used when RTEMS is * linked by itself and placed in ROM. This routine is the * first address in the ROM space for RTEMS. The user "calls" * this address with the directive arguments in the normal place. * This routine then jumps indirectly to the correct directive * preserving the arguments. The directive should not realize * it has been "wrapped" in this way. The table "_Entry_points" * is used to look up the directive. */ void __RTEMS() { asm volatile ( ".global _RTEMS _RTEMS:" ); asm volatile ( "jmp %0 rts nop" :: "m" (_Entry_points) ); }
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