1 files changed, 61 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/aarch64/crtn.S b/gcc-4.9/libgcc/config/aarch64/crtn.S
new file mode 100644
index 000000000..2a412394d
--- /dev/null
+++ b/gcc-4.9/libgcc/config/aarch64/crtn.S
@@ -0,0 +1,61 @@
+# Machine description for AArch64 architecture.
+# Copyright (C) 2009-2014 Free Software Foundation, Inc.
+# Contributed by ARM Ltd.
+#
+# 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.S.  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.
+.macro FUNC_END
+	ldp	x19, x20, [sp], #16
+	ldp	x21, x22, [sp], #16
+	ldp	x23, x24, [sp], #16
+	ldp	x25, x26, [sp], #16
+	ldp	x27, x28, [sp], #16
+	ldp	x29, x30, [sp], #16
+	ret
+.endm
+
+
+	.section	".init"
+	;;
+	FUNC_END
+
+	.section	".fini"
+	;;
+	FUNC_END
+
+# end of crtn.S