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