1/* LINTLIBRARY */ 2/*- 3 * Copyright 2001 David E. O'Brien. 4 * All rights reserved. 5 * Copyright 1996-1998 John D. Polstra. 6 * All rights reserved. 7 * Copyright (c) 1997 Jason R. Thorpe. 8 * Copyright (c) 1995 Christopher G. Demetriou 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed for the 22 * FreeBSD Project. See http://www.freebsd.org/ for 23 * information about FreeBSD. 24 * This product includes software developed for the 25 * NetBSD Project. See http://www.netbsd.org/ for 26 * information about NetBSD. 27 * 4. The name of the author may not be used to endorse or promote products 28 * derived from this software without specific prior written permission 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 31 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42#include <sys/cdefs.h>
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43__FBSDID("$FreeBSD: head/lib/csu/arm/crt1.c 232832 2012-03-11 20:04:09Z kib $");
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43__FBSDID("$FreeBSD: head/lib/csu/arm/crt1.c 245133 2013-01-07 17:58:27Z kib $"); |
44 45#ifndef lint 46#ifndef __GNUC__ 47#error "GCC is needed to compile this file" 48#endif 49#endif /* lint */ 50 51#include <stdlib.h> 52 53#include "libc_private.h" 54#include "crtbrand.c" 55#include "ignore_init.c" 56 57struct Struct_Obj_Entry; 58struct ps_strings; 59 60extern void _start(int, char **, char **, const struct Struct_Obj_Entry *, 61 void (*)(void), struct ps_strings *); 62 63#ifdef GCRT 64extern void _mcleanup(void); 65extern void monstartup(void *, void *); 66extern int eprol; 67extern int etext; 68#endif 69 70struct ps_strings *__ps_strings; 71 72void __start(int, char **, char **, struct ps_strings *, 73 const struct Struct_Obj_Entry *, void (*)(void)); 74 75/* The entry function. */ 76__asm(" .text \n" 77" .align 0 \n" 78" .globl _start \n" 79" _start: \n" 80" mov r5, r2 /* cleanup */ \n" 81" mov r4, r1 /* obj_main */ \n" 82" mov r3, r0 /* ps_strings */ \n" 83" /* Get argc, argv, and envp from stack */ \n" 84" ldr r0, [sp, #0x0000] \n" 85" add r1, sp, #0x0004 \n" 86" add r2, r1, r0, lsl #2 \n" 87" add r2, r2, #0x0004 \n" 88" /* Ensure the stack is properly aligned before calling C code. */\n" 89" bic sp, sp, #7 \n" 90" sub sp, sp, #8 \n" 91" str r5, [sp, #4] \n" 92" str r4, [sp, #0] \n" 93"\n" 94" b __start "); 95/* ARGSUSED */ 96void 97__start(int argc, char **argv, char **env, struct ps_strings *ps_strings, 98 const struct Struct_Obj_Entry *obj __unused, void (*cleanup)(void)) 99{ 100
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101 environ = env;
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101 handle_argv(argc, argv, env); |
102
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103 if (argc > 0 && argv[0] != NULL)
104 handle_progname(argv[0]);
105
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103 if (ps_strings != (struct ps_strings *)0) 104 __ps_strings = ps_strings; 105 106 if (&_DYNAMIC != NULL) 107 atexit(cleanup); 108 else 109 _init_tls(); 110#ifdef GCRT 111 atexit(_mcleanup); 112 monstartup(&eprol, &etext); 113#endif 114 handle_static_init(argc, argv, env); 115 exit(main(argc, argv, env)); 116} 117 118#ifdef GCRT 119__asm__(".text"); 120__asm__("eprol:"); 121__asm__(".previous"); 122#endif
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