e83f7ba2c9
. file- and functionality-compatible with previous situation
(FreeBSD csu) (with a crt1.o -> crt0.o symlink in /usr/lib)
. harmonizes source with netbsd
. harmonizes linker invocation (e.g. clang) with netbsd
. helpful to get some arm code in there for the arm port project
57 lines
2.2 KiB
ArmAsm
57 lines
2.2 KiB
ArmAsm
/* $NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg Exp $ */
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/*
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* Copyright (C) 1997 Mark Brinicombe
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* Copyright (C) 1995 Wolfgang Solfrank.
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* Copyright (C) 1995 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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RCSID("$NetBSD: crt0.S,v 1.1 2010/08/07 18:01:33 joerg Exp $")
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STRONG_ALIAS(_start,__start)
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_ENTRY(__start)
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mov r5, r2 /* cleanup */
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mov r4, r1 /* obj_main */
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mov r3, r0 /* ps_strings */
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/* Get argc, argv, and envp from stack */
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ldr r0, [sp, #0x0000]
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add r1, sp, #0x0004
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add r2, r1, r0, lsl #2
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add r2, r2, #0x0004
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/* Ensure the stack is properly aligned before calling C code. */
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bic sp, sp, #7
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sub sp, sp, #8
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str r5, [sp, #4]
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str r4, [sp, #0]
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b ___start
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