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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2017 embedded brains GmbH. 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 COPYRIGHT OWNER OR 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.
*/
/* 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
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