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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-10-04 06:51:35 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2017-02-01 17:48:38 +0100
commitdba942c80dc2cfa5768a856fff98e22a755fdd27 (patch)
tree371e775cb6dfec085945f6834aeb9d3b6de36fbe /libc/sysdeps/linux/aarch64/crti.S
parent9b457baf8d46329f7d7ee2aa084022bb0df88551 (diff)
add experimental aarch64 support
Ported over from GNU C Library and runtime tested in Qemu.
Diffstat (limited to 'libc/sysdeps/linux/aarch64/crti.S')
-rw-r--r--libc/sysdeps/linux/aarch64/crti.S59
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/aarch64/crti.S b/libc/sysdeps/linux/aarch64/crti.S
new file mode 100644
index 000000000..49c57e4c4
--- /dev/null
+++ b/libc/sysdeps/linux/aarch64/crti.S
@@ -0,0 +1,59 @@
+/* Special .init and .fini section support for AArch64.
+ Copyright (C) 1995-2016 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+ .fini sections and defines global symbols for those addresses, so
+ they can be called as functions. The symbols _init and _fini are
+ magic and cause the linker to emit DT_INIT and DT_FINI. */
+
+#include <libc-symbols.h>
+
+
+ .section .init,"ax",%progbits
+ .align 2
+ .global _init
+ .type _init, %function
+_init:
+ stp x29, x30, [sp, -16]!
+ mov x29, sp
+
+ .section .fini,"ax",%progbits
+ .align 2
+ .global _fini
+ .type _fini, %function
+_fini:
+ stp x29, x30, [sp, -16]!
+ mov x29, sp