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crt0.S revision 1.1 
      1  1.1  joerg /*	$NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg Exp $	*/
      2  1.1  joerg 
      3  1.1  joerg /*
      4  1.1  joerg  * Copyright (C) 1997 Mark Brinicombe
      5  1.1  joerg  * Copyright (C) 1995 Wolfgang Solfrank.
      6  1.1  joerg  * Copyright (C) 1995 TooLs GmbH.
      7  1.1  joerg  * All rights reserved.
      8  1.1  joerg  *
      9  1.1  joerg  * Redistribution and use in source and binary forms, with or without
     10  1.1  joerg  * modification, are permitted provided that the following conditions
     11  1.1  joerg  * are met:
     12  1.1  joerg  * 1. Redistributions of source code must retain the above copyright
     13  1.1  joerg  *    notice, this list of conditions and the following disclaimer.
     14  1.1  joerg  * 2. Redistributions in binary form must reproduce the above copyright
     15  1.1  joerg  *    notice, this list of conditions and the following disclaimer in the
     16  1.1  joerg  *    documentation and/or other materials provided with the distribution.
     17  1.1  joerg  * 3. All advertising materials mentioning features or use of this software
     18  1.1  joerg  *    must display the following acknowledgement:
     19  1.1  joerg  *	This product includes software developed by TooLs GmbH.
     20  1.1  joerg  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     21  1.1  joerg  *    derived from this software without specific prior written permission.
     22  1.1  joerg  *
     23  1.1  joerg  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     24  1.1  joerg  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  1.1  joerg  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  1.1  joerg  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     27  1.1  joerg  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     28  1.1  joerg  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     29  1.1  joerg  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     30  1.1  joerg  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     31  1.1  joerg  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     32  1.1  joerg  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  1.1  joerg  */
     34  1.1  joerg #include <machine/asm.h>
     35  1.1  joerg 
     36  1.1  joerg RCSID("$NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg Exp $")
     37  1.1  joerg 
     38  1.1  joerg STRONG_ALIAS(_start,__start)
     39  1.1  joerg 
     40  1.1  joerg _ENTRY(__start)
     41  1.1  joerg 	mov	r5, r2		/* cleanup */
     42  1.1  joerg 	mov	r4, r1		/* obj_main */
     43  1.1  joerg 	mov	r3, r0		/* ps_strings */
     44  1.1  joerg 	/* Get argc, argv, and envp from stack */
     45  1.1  joerg 	ldr	r0, [sp, #0x0000]
     46  1.1  joerg 	add	r1, sp, #0x0004
     47  1.1  joerg 	add	r2, r1, r0, lsl #2
     48  1.1  joerg 	add	r2, r2, #0x0004
     49  1.1  joerg 
     50  1.1  joerg 	/* Ensure the stack is properly aligned before calling C code. */
     51  1.1  joerg 	bic	sp, sp, #7
     52  1.1  joerg 	sub	sp, sp, #8
     53  1.1  joerg 	str	r5, [sp, #4]
     54  1.1  joerg 	str	r4, [sp, #0]
     55  1.1  joerg 
     56  1.1  joerg 	b	___start
     57