diff options
author | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-10-04 06:51:35 +0200 |
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committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-02-01 17:48:38 +0100 |
commit | dba942c80dc2cfa5768a856fff98e22a755fdd27 (patch) | |
tree | 371e775cb6dfec085945f6834aeb9d3b6de36fbe /libc/sysdeps/linux/aarch64/crti.S | |
parent | 9b457baf8d46329f7d7ee2aa084022bb0df88551 (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.S | 59 |
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 |