1/* LINTLIBRARY */ 2/*- 3 * Copyright 1996-1998 John D. Polstra. 4 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> 5 * All rights reserved. 6 * 7 * Portions of this software were developed by SRI International and the 8 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 9 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Portions of this software were developed by the University of Cambridge 12 * Computer Laboratory as part of the CTSRD Project, with support from the 13 * UK Higher Education Innovation Fund (HEIF). 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36#include <sys/cdefs.h> 37__FBSDID("$FreeBSD$"); 38 39#include <stdlib.h> 40 41#include "libc_private.h" 42#include "crtbrand.c" 43#include "ignore_init.c" 44 45typedef void (*fptr)(void); 46 47#ifdef GCRT 48extern void _mcleanup(void); 49extern void monstartup(void *, void *); 50extern int eprol; 51extern int etext; 52#endif 53 54void __start(int argc, char **argv, char **env, void (*cleanup)(void)); 55 56/* The entry function. */ 57__asm(" .text \n" 58" .align 0 \n" 59" .globl _start \n" 60" _start: \n" 61" mv a3, a2 \n" /* cleanup */ 62" addi a1, a0, 8 \n" /* get argv */ 63" ld a0, 0(a0) \n" /* load argc */ 64" slli t0, a0, 3 \n" /* mult by arg size */ 65" add a2, a1, t0 \n" /* env is after argv */ 66" addi a2, a2, 8 \n" /* argv is null terminated */ 67" lla gp, _gp \n" /* load global pointer */ 68" call __start"); 69 70void 71__start(int argc, char **argv, char **env, void (*cleanup)(void)) 72{ 73 74 handle_argv(argc, argv, env); 75 76 if (&_DYNAMIC != NULL) 77 atexit(cleanup); 78 else 79 _init_tls(); 80 81#ifdef GCRT 82 atexit(_mcleanup); 83 monstartup(&eprol, &etext); 84__asm__("eprol:"); 85#endif 86 87 handle_static_init(argc, argv, env); 88 exit(main(argc, argv, env)); 89} 90