xref: /linux/arch/s390/kernel/vdso64/vdso64.lds.S (revision b50ecc5aca4d18f1f0c4942f5c797bc85edef144)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * This is the infamous ld script for the 64 bits vdso
4 * library
5 */
6
7#include <asm/vdso/vsyscall.h>
8#include <asm/page.h>
9#include <asm/vdso.h>
10
11OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
12OUTPUT_ARCH(s390:64-bit)
13
14SECTIONS
15{
16	PROVIDE(_vdso_data = . - __VVAR_PAGES * PAGE_SIZE);
17	PROVIDE(_vdso_rng_data = _vdso_data + __VDSO_RND_DATA_OFFSET);
18#ifdef CONFIG_TIME_NS
19	PROVIDE(_timens_data = _vdso_data + PAGE_SIZE);
20#endif
21	. = SIZEOF_HEADERS;
22
23	.hash		: { *(.hash) }			:text
24	.gnu.hash	: { *(.gnu.hash) }
25	.dynsym		: { *(.dynsym) }
26	.dynstr		: { *(.dynstr) }
27	.gnu.version	: { *(.gnu.version) }
28	.gnu.version_d	: { *(.gnu.version_d) }
29	.gnu.version_r	: { *(.gnu.version_r) }
30
31	.note		: { *(.note.*) }		:text	:note
32
33	. = ALIGN(16);
34	.text		: {
35		*(.text .stub .text.* .gnu.linkonce.t.*)
36	} :text
37	PROVIDE(__etext = .);
38	PROVIDE(_etext = .);
39	PROVIDE(etext = .);
40
41	/*
42	 * Other stuff is appended to the text segment:
43	 */
44	.rodata		: { *(.rodata .rodata.* .gnu.linkonce.r.*) }
45	.rodata1	: { *(.rodata1) }
46
47	. = ALIGN(8);
48	.altinstructions	: { *(.altinstructions) }
49	.altinstr_replacement	: { *(.altinstr_replacement) }
50
51	.dynamic	: { *(.dynamic) }		:text	:dynamic
52
53	.eh_frame_hdr	: { *(.eh_frame_hdr) }		:text	:eh_frame_hdr
54	.eh_frame	: { KEEP (*(.eh_frame)) }	:text
55	.gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) }
56
57	.rela.dyn ALIGN(8) : { *(.rela.dyn) }
58	.got ALIGN(8)	: { *(.got .toc) }
59	.got.plt ALIGN(8) : { *(.got.plt) }
60
61	_end = .;
62	PROVIDE(end = .);
63
64	/*
65	 * Stabs debugging sections are here too.
66	 */
67	.stab	       0 : { *(.stab) }
68	.stabstr       0 : { *(.stabstr) }
69	.stab.excl     0 : { *(.stab.excl) }
70	.stab.exclstr  0 : { *(.stab.exclstr) }
71	.stab.index    0 : { *(.stab.index) }
72	.stab.indexstr 0 : { *(.stab.indexstr) }
73	.comment       0 : { *(.comment) }
74
75	/*
76	 * DWARF debug sections.
77	 * Symbols in the DWARF debugging sections are relative to the
78	 * beginning of the section so we begin them at 0.
79	 */
80	/* DWARF 1 */
81	.debug		0 : { *(.debug) }
82	.line		0 : { *(.line) }
83	/* GNU DWARF 1 extensions */
84	.debug_srcinfo	0 : { *(.debug_srcinfo) }
85	.debug_sfnames	0 : { *(.debug_sfnames) }
86	/* DWARF 1.1 and DWARF 2 */
87	.debug_aranges	0 : { *(.debug_aranges) }
88	.debug_pubnames 0 : { *(.debug_pubnames) }
89	/* DWARF 2 */
90	.debug_info	0 : { *(.debug_info .gnu.linkonce.wi.*) }
91	.debug_abbrev	0 : { *(.debug_abbrev) }
92	.debug_line	0 : { *(.debug_line) }
93	.debug_frame	0 : { *(.debug_frame) }
94	.debug_str	0 : { *(.debug_str) }
95	.debug_loc	0 : { *(.debug_loc) }
96	.debug_macinfo	0 : { *(.debug_macinfo) }
97	/* SGI/MIPS DWARF 2 extensions */
98	.debug_weaknames 0 : { *(.debug_weaknames) }
99	.debug_funcnames 0 : { *(.debug_funcnames) }
100	.debug_typenames 0 : { *(.debug_typenames) }
101	.debug_varnames  0 : { *(.debug_varnames) }
102	/* DWARF 3 */
103	.debug_pubtypes 0 : { *(.debug_pubtypes) }
104	.debug_ranges	0 : { *(.debug_ranges) }
105	.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
106
107	/DISCARD/	: {
108		*(.note.GNU-stack)
109		*(.branch_lt)
110		*(.data .data.* .gnu.linkonce.d.* .sdata*)
111		*(.bss .sbss .dynbss .dynsbss)
112	}
113}
114
115/*
116 * Very old versions of ld do not recognize this name token; use the constant.
117 */
118#define PT_GNU_EH_FRAME	0x6474e550
119
120/*
121 * We must supply the ELF program headers explicitly to get just one
122 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
123 */
124PHDRS
125{
126	text		PT_LOAD FILEHDR PHDRS FLAGS(5);	/* PF_R|PF_X */
127	dynamic		PT_DYNAMIC FLAGS(4);		/* PF_R */
128	note		PT_NOTE FLAGS(4);		/* PF_R */
129	eh_frame_hdr	PT_GNU_EH_FRAME;
130}
131
132/*
133 * This controls what symbols we export from the DSO.
134 */
135VERSION
136{
137	VDSO_VERSION_STRING {
138	global:
139		/*
140		 * Has to be there for the kernel to find
141		 */
142		__kernel_gettimeofday;
143		__kernel_clock_gettime;
144		__kernel_clock_getres;
145		__kernel_getcpu;
146		__kernel_restart_syscall;
147		__kernel_rt_sigreturn;
148		__kernel_sigreturn;
149		__kernel_getrandom;
150	local: *;
151	};
152}
153