xref: /freebsd/sys/conf/vdso_amd64_ia32.ldscript (revision d4eeb02986980bf33dd56c41ceb9fc5f180c0d47)
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2021 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
7 * under sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31/*
32 * Linker script for ia32 (32bit) vdso on amd64.
33 */
34
35/*
36 * The OUTPUT_ARCH and TARGET lines are for ld.bfd, which cannot determine
37 * the output format based on the first input file.
38 * lld doesn't do much with them, the only thing it does is produce ELF
39 * or binary based on TARGET.
40 */
41OUTPUT_ARCH(i386)
42TARGET(elf32-i386-freebsd)
43
44PHDRS
45{
46	text		PT_LOAD		FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
47	dynamic		PT_DYNAMIC	FLAGS(5);
48	eh_frame_hdr	PT_GNU_EH_FRAME FLAGS(5);
49}
50
51SECTIONS
52{
53	. = . + SIZEOF_HEADERS;
54
55	.hash		: { *(.hash) }			:text
56	.gnu.hash	: { *(.gnu.hash) }		:text
57	.dynsym		: { *(.dynsym) }		:text
58	.dynstr		: { *(.dynstr) }		:text
59	.gnu.version	: { *(.gnu.version) }		:text
60	.gnu.version_d	: { *(.gnu.version_d) }		:text
61	.gnu.version_r	: { *(.gnu.version_r) }		:text
62	.eh_frame_hdr	: { *(.eh_frame_hdr) }		:text	:eh_frame_hdr
63	.eh_frame	: { KEEP (*(.eh_frame)) }	:text
64	.dynamic	: { *(.dynamic) }		:text	:dynamic
65	.rodata		: { *(.rodata*) }		:text
66	.data : {
67	      *(.got.plt) *(.got)
68	} :text
69	/DISCARD/ /* .data */: {
70	      *(.data*)
71	      *(.sdata*)
72	      *(.gnu.linkonce.d.*)
73	      *(.bss*)
74	      *(.dynbss*)
75	      *(.gnu.linkonce.b.*)
76	      *(.ctors)
77	      *(.dtors)
78	      *(.jcr)
79	      *(.init_array)
80	      *(.init)
81	      *(.fini)
82	      *(.debug*)
83	      *(.comment)
84	}
85
86	. = ALIGN(0x10);
87	.text		: { *(.text .text*) }		:text	=0x90909090
88}
89
90VERSION
91{
92	FBSD_1.7 {
93		global:
94			__vdso_ia32_sigcode;
95			__vdso_freebsd4_ia32_sigcode;
96			__vdso_ia32_osigcode;
97			__vdso_lcall_tramp;
98		local:
99			*;
100	};
101}
102