Mercurial > hg > CbC > CbC_gcc
diff gcc/config/arm/crtn.asm @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | b7f97abdc517 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/arm/crtn.asm Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,72 @@ +# 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