1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * GNU linker script for the VDSO library.
4 *
5 * Copyright (C) 2012 ARM Limited
6 *
7 * Author: Will Deacon <will.deacon@arm.com>
8 * Heavily based on the vDSO linker scripts for other archs.
9 */
10
11 #include <linux/const.h>
12 #include <asm/page.h>
13 #include <asm/vdso.h>
14 #include <asm-generic/vmlinux.lds.h>
15
16 OUTPUT_FORMAT("elf64-littleaarch64", "elf64-bigaarch64", "elf64-littleaarch64")
17 OUTPUT_ARCH(aarch64)
18
19 SECTIONS
20 {
21 PROVIDE(_vdso_data = . - __VVAR_PAGES * PAGE_SIZE);
22 #ifdef CONFIG_TIME_NS
23 PROVIDE(_timens_data = _vdso_data + PAGE_SIZE);
24 #endif
25 . = VDSO_LBASE + SIZEOF_HEADERS;
26
27 .hash : { *(.hash) } :text
28 .gnu.hash : { *(.gnu.hash) }
29 .dynsym : { *(.dynsym) }
30 .dynstr : { *(.dynstr) }
31 .gnu.version : { *(.gnu.version) }
32 .gnu.version_d : { *(.gnu.version_d) }
33 .gnu.version_r : { *(.gnu.version_r) }
34
35 /*
36 * Discard .note.gnu.property sections which are unused and have
37 * different alignment requirement from vDSO note sections.
38 */
39 /DISCARD/ : {
40 *(.note.GNU-stack .note.gnu.property)
41 }
42 .note : { *(.note.*) } :text :note
43
44 . = ALIGN(16);
45
46 .text : { *(.text*) } :text =0xd503201f
47 PROVIDE (__etext = .);
48 PROVIDE (_etext = .);
49 PROVIDE (etext = .);
50
51 . = ALIGN(4);
52 .altinstructions : {
53 *(.altinstructions)
54 }
55
56 .dynamic : { *(.dynamic) } :text :dynamic
57
58 .rela.dyn : ALIGN(8) { *(.rela .rela*) }
59
60 .rodata : {
61 *(.rodata*)
62 *(.got)
63 *(.got.plt)
64 *(.plt)
65 *(.plt.*)
66 *(.iplt)
67 *(.igot .igot.plt)
68 } :text
69
70 _end = .;
71 PROVIDE(end = .);
72
73 DWARF_DEBUG
74 ELF_DETAILS
75
76 /DISCARD/ : {
77 *(.data .data.* .gnu.linkonce.d.* .sdata*)
78 *(.bss .sbss .dynbss .dynsbss)
79 *(.eh_frame .eh_frame_hdr)
80 }
81 }
82
83 /*
84 * We must supply the ELF program headers explicitly to get just one
85 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
86 */
87 PHDRS
88 {
89 text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
90 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
91 note PT_NOTE FLAGS(4); /* PF_R */
92 }
93
94 /*
95 * This controls what symbols we export from the DSO.
96 */
97 VERSION
98 {
99 LINUX_2.6.39 {
100 global:
101 __kernel_rt_sigreturn;
102 __kernel_gettimeofday;
103 __kernel_clock_gettime;
104 __kernel_clock_getres;
105 local: *;
106 };
107 }
108
109 /*
110 * Make the sigreturn code visible to the kernel.
111 */
112 VDSO_sigtramp = __kernel_rt_sigreturn;
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.