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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
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