55 lines
1.1 KiB
ArmAsm
55 lines
1.1 KiB
ArmAsm
/*
|
|
* \brief Startup code for Genode applications
|
|
* \author Christian Helmuth
|
|
* \date 2006-07-06
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
/*--- .text (program code) -------------------------*/
|
|
.text
|
|
|
|
.globl _start_ldso
|
|
_start_ldso:
|
|
|
|
/* set global offset table the taditional way */
|
|
call 3f
|
|
3:
|
|
popl %ebx;
|
|
addl $_GLOBAL_OFFSET_TABLE_+ (. - 3b), %ebx
|
|
|
|
movl %esp, __initial_sp@GOTOFF(%ebx)
|
|
|
|
/*
|
|
* environ = &argv[argc + 1]
|
|
* in Genode argc is always 1
|
|
*/
|
|
popl %eax /* argc */
|
|
popl %eax /* argv[0] */
|
|
popl %eax /* NULL */
|
|
movl %esp, lx_environ@GOTOFF(%ebx)
|
|
|
|
/* XXX Switch to our own stack. */
|
|
leal _stack_high@GOTOFF(%ebx), %esp
|
|
|
|
/* relocate ldso */
|
|
call init_rtld
|
|
|
|
/* Clear the base pointer so that stack backtraces will work. */
|
|
xorl %ebp,%ebp
|
|
|
|
/* Jump into init C code */
|
|
call _main
|
|
|
|
/* We should never get here since _main does not return */
|
|
1: int $3
|
|
jmp 2f
|
|
.ascii "_main() returned."
|
|
2: jmp 1b
|
|
|