126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* $NetBSD: crt0.c,v 1.28 1997/10/20 13:49:45 mycroft Exp $ */
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/*
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1993 Paul Kranenburg
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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 Paul Kranenburg.
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* 4. The name of the author 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 THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <stdlib.h>
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#include "common.h"
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extern unsigned char etext;
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extern unsigned char eprol asm("eprol");
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extern void start __P((void)) asm("start");
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void __start __P((int, char *[], char *[]));
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__asm("
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.text
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.align 2
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.globl start
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start:
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movl %ebx,___ps_strings
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movl (%esp),%eax
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leal 8(%esp,%eax,4),%ecx
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leal 4(%esp),%edx
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pushl %ecx
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pushl %edx
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pushl %eax
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call ___start
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");
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: crt0.c,v 1.28 1997/10/20 13:49:45 mycroft Exp $");
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#endif /* LIBC_SCCS and not lint */
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void
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__start(argc, argv, envp)
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int argc;
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char *argv[];
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char *envp[];
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{
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char *ap;
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environ = envp;
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if ((ap = argv[0]))
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if ((__progname = _strrchr(ap, '/')) == NULL)
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__progname = ap;
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else
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++__progname;
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#ifdef DYNAMIC
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/* ld(1) convention: if DYNAMIC = 0 then statically linked */
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#ifdef stupid_gcc
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if (&_DYNAMIC)
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#else
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if ( ({volatile caddr_t x = (caddr_t)&_DYNAMIC; x; }) )
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#endif
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__load_rtld(&_DYNAMIC);
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#endif /* DYNAMIC */
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#ifdef MCRT0
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atexit(_mcleanup);
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monstartup((u_long)&eprol, (u_long)&etext);
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#endif /* MCRT0 */
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__asm("__callmain:"); /* Defined for the benefit of debuggers */
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exit(main(argc, argv, envp));
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}
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#ifdef DYNAMIC
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asm("
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.text
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.align 2
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___syscall:
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popl %ecx
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popl %eax
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pushl %ecx
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int $0x80
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jc 1f
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jmp %ecx
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1:
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movl $-1,%eax
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jmp %ecx
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");
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#endif /* DYNAMIC */
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#include "common.c"
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#ifdef MCRT0
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__asm("
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.text
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.align 2
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eprol:
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");
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#endif /* MCRT0 */
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