135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/* $NetBSD: crt0.c,v 1.3 1997/10/05 23:12:21 mark 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 <sys/param.h>
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#include <stdlib.h>
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#include "common.h"
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#undef mmap
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#define mmap(addr, len, prot, flags, fd, off) \
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__syscall(SYS_mmap, (addr), (len), (prot), (flags), \
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(fd), 0, (off_t)(off))
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extern void start __P((void)) asm("start");
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void
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start(void)
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{
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struct kframe {
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int kargc;
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char *kargv[1]; /* size depends on kargc */
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char kargstr[1]; /* size varies */
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char kenvstr[1]; /* size varies */
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};
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/*
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* ALL REGISTER VARIABLES!!!
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*/
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register struct kframe *kfp;
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register char **targv;
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register char **argv;
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register int *ptr;
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/* just above the saved frame pointer */
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__asm("mov %0, ip" : "=r" (kfp) );
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for (argv = targv = &kfp->kargv[0]; *targv++; /* void */)
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if (targv >= (char **)(*argv))
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--targv;
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environ = targv;
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if (argv[0])
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if ((__progname = _strrchr(argv[0], '/')) == NULL)
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__progname = argv[0];
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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(kfp->kargc, argv, environ));
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}
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#ifndef ntohl
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inline in_addr_t
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ntohl(x)
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in_addr_t x;
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{
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#if BYTE_ORDER == LITTLE_ENDIAN
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return( ((x & 0x000000ff) << 24)
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| ((x & 0x0000ff00) << 8)
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| ((x & 0x00ff0000) >> 8)
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| ((x & 0xff000000) >> 24));
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#else
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return x;
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#endif /* BYTE_ORDER */
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}
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#endif /* ntohl */
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#ifdef DYNAMIC
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__asm("
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.text
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.align 0
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___syscall:
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swi 0
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mvncs r0, #0
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mov pc, lr
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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(".text; .align 0; eprol:");
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#endif /* MCRT0 */
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