crt1.c revision 70657
1/*- 2 * Copyright 2001 David E. O'Brien. 3 * All rights reserved. 4 * Copyright 1996-1998 John D. Polstra. 5 * All rights reserved. 6 * Copyright (c) 1997 Jason R. Thorpe. 7 * Copyright (c) 1995 Christopher G. Demetriou 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the 21 * FreeBSD Project. See http://www.freebsd.org/ for 22 * information about FreeBSD. 23 * This product includes software developed for the 24 * NetBSD Project. See http://www.netbsd.org/ for 25 * information about NetBSD. 26 * 4. The name of the author may not be used to endorse or promote products 27 * derived from this software without specific prior written permission 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 31 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 32 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 34 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 38 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * $FreeBSD: head/lib/csu/powerpc/crt1.c 70657 2001-01-04 10:25:59Z obrien $ 41 */ 42 43#ifndef __GNUC__ 44#error "GCC is needed to compile this file" 45#endif 46 47#include <stdlib.h> 48#include "crtbrand.c" 49 50#pragma weak _DYNAMIC 51extern int _DYNAMIC; 52 53extern void _init(void); 54extern void _fini(void); 55extern int main(int, char **, char **); 56 57#ifdef GCRT 58extern void _mcleanup(void); 59extern void monstartup(void *, void *); 60extern int eprol; 61extern int etext; 62#endif 63 64/* 65 * First 5 arguments are specified by the PowerPC SVR4 ABI. 66 * The last argument, ps_strings, is a BSD extension. 67 */ 68void _start __P((int, char **, char **, const Obj_Entry *, 69 void (*) __P((void)), struct ps_strings *)); 70 71char **environ; 72char *__progname = ""; 73 74/* The entry function. */ 75void 76_start(argc, argv, envp, obj, cleanup, ps_strings) 77 int argc; 78 char **argv, **envp; 79 const Obj_Entry *obj; /* from shared loader */ 80 void (*cleanup) __P((void)); /* from shared loader */ 81 struct ps_strings *ps_strings; /* BSD extension */ 82{ 83 char *namep; 84 85 environ = envp; 86 87 if(argc > 0 && argv[0] != NULL) { 88 char *s; 89 __progname = argv[0]; 90 for (s = __progname; *s != '\0'; s++) 91 if (*s == '/') 92 __progname = s + 1; 93 } 94 95 if (ps_strings != (struct ps_strings *)0) 96 __ps_strings = ps_strings; 97 98 if (&_DYNAMIC != NULL) 99 atexit(cleanup); 100 101#ifdef GCRT 102 atexit(_mcleanup); 103#endif 104 atexit(_fini); 105#ifdef GCRT 106 monstartup(&eprol, &etext); 107#endif 108 _init(); 109 exit( main(argc, argv, env) ); 110} 111 112#ifdef GCRT 113__asm__(".text"); 114__asm__("eprol:"); 115__asm__(".previous"); 116#endif 117 118/* 119 * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text. 120 */ 121#ifndef lint 122static const char rcsid[] = 123 "$FreeBSD: head/lib/csu/powerpc/crt1.c 70657 2001-01-04 10:25:59Z obrien $"; 124#endif 125