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crt0.S revision 1.2 
      1 /*	$NetBSD: crt0.S,v 1.2 2012/08/11 01:33:36 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1997 Mark Brinicombe
      5  * Copyright (C) 1995 Wolfgang Solfrank.
      6  * Copyright (C) 1995 TooLs GmbH.
      7  * All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by TooLs GmbH.
     20  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     27  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     29  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     31  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     32  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 #include <machine/asm.h>
     35 
     36 RCSID("$NetBSD: crt0.S,v 1.2 2012/08/11 01:33:36 matt Exp $")
     37 
     38 STRONG_ALIAS(_start,__start)
     39 
     40 _ENTRY(__start)
     41 	/*
     42 	 * We need to swap ps_strings and cleanup
     43  	 */
     44 	mov	ip, r0		/* ps_strings -> tmp */
     45 	mov	r0, r2		/* cleanup -> ps_strings */
     46 	mov	r2, ip		/* tmp -> ps_strings */
     47 
     48 	/* Ensure the stack is properly aligned before calling C code. */
     49 	bic	sp, sp, #7
     50 
     51 	/*
     52 	 * void ___start(void (*cleanup)(void),
     53 	 *    const Obj_Entry *obj,
     54 	 *    struct ps_strings *ps_strings);
     55 	 */
     56 
     57 	b	___start
     58