blob: a664ae2522e0c68570b9ad5cc376af9c9ba68727 (
plain) (
tree)
|
|
/*
* Copyright (c) 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
/* rtems_crti.S */
#include <rtems/asm.h>
#include <rtems/score/cpu.h>
#if defined(__powerpc64__)
.section ".init","ax"
.align 2
.globl _init
.type _init,@function
_init:
mflr r0
std r0,16(1)
stdu r1,-96(1)
.section ".fini","ax"
.align 2
.globl _fini
.type _fini,@function
_fini:
mflr r0
std r0,16(r1)
stdu r1,-96(r1)
#else
/* terminate the __init() function and create
* a new head '_init' for use by RTEMS to
* invoke C++ global constructors
* NOTE: it is essential that this snippet
* is hooked between ecrti and crtbegin
*
* ecrti has the following .init section:
* __init:
* stwu r1,-16(r1)
* mflr r0
* stw r0,20(r1)
*
* The reason for this is that we want to call
* __eabi() at an early stage but prevent __eabi()
* from branching to __init (C++ exception init
* and global CTORs). Hence we make __init a no-op
* and create a new entry point:
*/
.section ".init","ax"
.align 2
lwz r0,r20(r1)
mtlr r0
addi r1,r1,16
blr
.globl _init
.type _init,@function
_init:
stwu r1,-16(r1)
mflr r0
stw r0,20(r1)
#endif
|