1/* LINTLIBRARY */ 2/*- 3 * Copyright 2001 David E. O'Brien. 4 * All rights reserved. 5 * Copyright (c) 1995, 1998 Berkeley Software Design, Inc. 6 * All rights reserved. 7 * Copyright 1996-1998 John D. Polstra. 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. The name of the authors may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36#ifndef lint 37#ifndef __GNUC__ 38#error "GCC is needed to compile this file" 39#endif 40#endif /* lint */ 41 42#include <stdlib.h> 43 44#include "libc_private.h" 45#include "crtbrand.c" 46 47struct Struct_Obj_Entry; 48struct ps_strings; 49 50extern int _DYNAMIC; 51#pragma weak _DYNAMIC 52 53extern void _fini(void); 54extern void _init(void); 55extern int main(int, char **, char **); 56extern void __sparc_utrap_setup(void); 57 58#ifdef GCRT 59extern void _mcleanup(void); 60extern void monstartup(void *, void *); 61extern int eprol; 62extern int etext; 63#endif 64 65char **environ; 66const char *__progname = ""; 67 68void _start(char **, void (*)(void), struct Struct_Obj_Entry *, 69 struct ps_strings *); 70 71/* The entry function. */ 72/* 73 * %o0 holds ps_strings pointer. 74 * 75 * Note: kernel may (is not set in stone yet) pass ELF aux vector in %o1, 76 * but for now we do not use it here. 77 * 78 * The SPARC compliance definitions specifies that the kernel pass the 79 * address of a function to be executed on exit in %g1. We do not make 80 * use of it as it is quite broken, because gcc can use this register 81 * as a temporary, so it is not safe from C code. Its even more broken 82 * for dynamic executables since rtld runs first. 83 */ 84/* ARGSUSED */ 85void 86_start(char **ap, void (*cleanup)(void), struct Struct_Obj_Entry *obj __unused, 87 struct ps_strings *ps_strings __unused) 88{ 89 int argc; 90 char **argv; 91 char **env; 92 const char *s; 93 94 argc = *(long *)(void *)ap; 95 argv = ap + 1; 96 env = ap + 2 + argc; 97 if (environ == NULL) 98 environ = env; 99 if (argc > 0 && argv[0] != NULL) { 100 __progname = argv[0]; 101 for (s = __progname; *s != '\0'; s++) 102 if (*s == '/') 103 __progname = s + 1; 104 } 105 106 if (&_DYNAMIC != NULL) 107 atexit(cleanup); 108 else { 109 __sparc_utrap_setup(); 110 _init_tls(); 111 } 112#ifdef GCRT 113 atexit(_mcleanup); 114#endif 115 atexit(_fini); 116#ifdef GCRT 117 monstartup(&eprol, &etext); 118#endif 119 _init(); 120 exit( main(argc, argv, env) ); 121} 122 123#ifdef GCRT 124__asm__(".text"); 125__asm__("eprol:"); 126__asm__(".previous"); 127#endif 128