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
# <http://www.gnu.org/licenses/>.

/* 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