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/*

 * Copyright (c) 1993 Eric Youngdale, Peter MacDonald, David Engel

 * and Hongjiu Lu.

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. The name of the above contributors may not be

 *    used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

/* Notice of general intent:

 *

 * The linux operating system generally contains large amounts of code

 * that fall under the GNU General Public License, or GPL for short.

 * This file contains source code that by it's very nature would always

 * be linked with an application program, and because of this a GPL type

 * of copyright on this file would place restrictions upon the

 * distribution of binary-only commercial software.  Since the goal of the

 * Linux project as a whole is not to discourage the development and

 * distribution of commercial software for Linux, this file has been placed

 * under a more relaxed BSD-style of copyright.

 *

 * It is the general understanding of the above contributors that a

 * program executable linked to a library containing code that falls

 * under the GPL or GLPL style of license is not subject to the terms of

 * the GPL or GLPL license if the program executable(s) that are supplied

 * are linked to a shared library form of the GPL or GLPL library, and as long

 * as the form of the shared library is such that it is possible for

 * the end user to modify and rebuild the library and use it in

 * conjunction with the program executable.

 */

#ifdef __ELF__

#define _main main

#define _exit exit

#define ___libc_init __libc_init

#define _setlocale setlocale

#define ___setfpucw __setfpucw

#define ___fpu_control __fpu_control

#define ___environ __environ

#define ____brk_addr ___brk_addr

#define d0 %D0

#define d1 %D1

#define a0 %A0

#define sp %SP

#endif

        .file "crt0.S"

#if defined (__ELF__) && defined (CALL_DEFAULT_LOCALE)

        .section .rodata

        .align 4

        .type ___null_string,@object

        .size ___null_string,4

___null_string:

        .long .L_shared_dummy__

.L_shared_dummy__:

        .asciz ""

#endif

        .text

        .globl  ___crt_dummy__

___crt_dummy__:

#ifndef __ELF__

__entry:

/*

 * The first thing we do is try to load the shared library. If that

 * fails, it won't return.

 */

        jbsr ___load_shared_libraries

#else

/* ELF stuff here */

.globl _start

.type _start,@function

_start:

        /* First locate the start of the environment variables */

        movel sp@+,d0

        movel sp,a0

        pea sp@(4,d0:l:4)

        movel a0,sp@-

        movel d0,sp@-

/*

 * Make sure we are using the linux personality.

 */

        movel #136,d0

        clrl d1

        trap #0

#endif

#if 0

/*

 *      This is important, and was missing from the new version...

 */

        moveq #45,d0

        moveq #0,d1

        trap  #0

        movel d0,____brk_addr

#endif

/*

 *      ok, set up the  ___environ and call _main

 */

        movel sp@(8),___environ

        /* Avoid touching the fpu unless necessary.  */

        movel ___fpu_control,d0

        movel d0,d1

        andw #0xfff0,d1

        jeq 1f

        movel d0,sp@-

        jbsr  ___setfpucw

        addql #4,sp

1:

/* Some functions may be needed. */

        jbsr  ___libc_init

#ifdef CALL_DEFAULT_LOCALE

/* Set up the default locale */

        movel ___null_string,sp@-

        pea DEFAULT_LOCALE

        jbsr _setlocale

        addql #8,sp

#endif

#ifdef ELF_INIT_FINI

        pea _fini

        jbsr atexit

        addql #4,sp

        jbsr _init

#endif

        jbsr  _main

        movel d0,sp@-

        jbsr  _exit

/*

 *      Just in case _exit fails... We use trap #0 for __exit().

 */

        addql #4,sp

done:

        moveq #1,d0

        trap  #0

        bras  done

#ifdef __ELF__

        .align  4

        .size   _start,.-_start

#if 1

        .data

        .globl  __environ

        .type   __environ,@object

        .align  4

__environ:

        .long   0

        .size   __environ,4

        .weak   environ

        environ = __environ

#endif

#else

        .align  2

#ifdef CALL_DEFAULT_LOCALE

___null_string:

        .long ___shared_dummy__

#endif

___shared_dummy__:

        .asciz ""

        .stabs "___SHARED_LIBRARIES__",25,0,0,___shared_dummy__

        .data

        .align  2

___shared_dummy1__:

        .long 0xfeeb1ed3  /* Magic number used by DLL code to make sure this

                             is a real list */

        .stabs "__SHARABLE_CONFLICTS__",25,0,0,___shared_dummy1__

#endif