uclibc-ng/libc/sysdeps/linux/arc/crt1.S

/*
 * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
 *
 * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
 */

#include <features.h>
#include <sysdep.h>

.text

#ifndef __UCLIBC_CTOR_DTOR__
	.weak	_init
	.weak	_fini
#endif

/* Stick in a dummy reference to main(), so that if an application
 * is linking when the main() function is in a static library (.a)
 * we can be sure that main() actually gets linked in
 */
	.type	main,@function
	.type	_main,@function


/* When we enter this piece of code, the program stack looks like this:
        argc            argument counter (integer)
        argv[0]         program name (pointer)
        argv[1...N]     program args (pointers)
        argv[argc-1]    end of args (integer)
	NULL
        env[0...N]      environment variables (pointers)
        NULL
*/
ENTRY(__start)
	mov	fp, 0
	ld_s	r1, [sp]	; argc

	mov_s	r5, r0		; rltd_fini
	add_s	r2, sp, 4	; argv

	mov_s	r0, main
	mov_s	r3, _init
	mov	r4, _fini

	and	sp, sp, -8
	mov	r6, sp

	/* __uClibc_main (main, argc, argv, init, fini, rtld_fini, stack_end) */
	bl	__uClibc_main

	/* Should never get here....  */
	flag    1
END(__start)
libc_hidden_def(__start)