1/* $NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg 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 36RCSID("$NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg Exp $") 37 38STRONG_ALIAS(_start,__start) 39 40_ENTRY(__start) 41 mov r5, r2 /* cleanup */ 42 mov r4, r1 /* obj_main */ 43 mov r3, r0 /* ps_strings */ 44 /* Get argc, argv, and envp from stack */ 45 ldr r0, [sp, #0x0000] 46 add r1, sp, #0x0004 47 add r2, r1, r0, lsl #2 48 add r2, r2, #0x0004 49 50 /* Ensure the stack is properly aligned before calling C code. */ 51 bic sp, sp, #7 52 sub sp, sp, #8 53 str r5, [sp, #4] 54 str r4, [sp, #0] 55 56 b ___start 57