Subversion Repositories openrisc_2011-10-31

#   Copyright (C) 2001, 2004, 2008, 2009 Free Software Foundation, Inc.

#   Written By Nick Clifton

#

# This file is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License as published by the

# Free Software Foundation; either version 3, or (at your option) any

# later version.

#

# This file is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# Under Section 7 of GPL version 3, you are granted additional

# permissions described in the GCC Runtime Library Exception, version

# 3.1, as published by the Free Software Foundation.

#

# You should have received a copy of the GNU General Public License and

# a copy of the GCC Runtime Library Exception along with this program;

# see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

# .

/* An executable stack is *not* required for these functions.  */

#if defined(__ELF__) && defined(__linux__)

.section .note.GNU-stack,"",%progbits

.previous

#endif

# This file just makes sure that the .fini and .init sections do in

# fact return.  Users may put any desired instructions in those sections.

# This file is the last thing linked into any executable.

        # Note - this macro is complemented by the FUNC_START macro

        # in crti.asm.  If you change this macro you must also change

        # that macro match.

        #

        # Note - we do not try any fancy optimizations of the return

        # sequences here, it is just not worth it.  Instead keep things

        # simple.  Restore all the save resgisters, including the link

        # register and then perform the correct function return instruction.

        # We also save/restore r3 to ensure stack alignment.

.macro FUNC_END

#ifdef __thumb__

        .thumb

        pop     {r3, r4, r5, r6, r7}

        pop     {r3}

        mov     lr, r3

#else

        .arm

        sub     sp, fp, #40

        ldmfd   sp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, lr}

#endif

#if defined __THUMB_INTERWORK__ || defined __thumb__

        bx      lr

#else

        mov     pc, lr

#endif

.endm

        .section        ".init"

        ;;

        FUNC_END

        .section        ".fini"

        ;;

        FUNC_END

# end of crtn.asm