freebsd-dev/lib/csu/common/ignore_init_note.S
John Baldwin 99282790b7 Remove the sed hack for ABI tag notes.
The ELF notes compiled in C were placed in a section with the wrong type
(SHT_PROGBITS instead of SHT_NOTE).  Previously, sed was used on the
generated assembly to rewrite the section type.  Instead, write the notes
in assembly which permits setting the correct section type directly.

While here, move inline assembly entry points out of C and into assembly
for aarch64, arm, and riscv.

Reviewed by:	kib
Tested on:	amd64 (cirrus-ci), riscv64
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D25211
2020-06-15 19:38:48 +00:00

44 lines
1.5 KiB
ArmAsm

/*-
* SPDX-License-Identifier: BSD-1-Clause
*
* Copyright 2012 Konstantin Belousov <kib@FreeBSD.org>
* Copyright (c) 2018 The FreeBSD Foundation
*
* Parts of this software was developed by Konstantin Belousov
* <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
#include <sys/elf_common.h>
#include "notes.h"
.section .note.tag,"a",%note
.p2align 2
.4byte 2f-1f
.4byte 4f-3f
.4byte NT_FREEBSD_NOINIT_TAG
1: .asciz NOTE_FREEBSD_VENDOR
2: .p2align 2
3: .4byte 0
4: