1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Linker script for vDSO.  This is an ELF shared object prelinked to
4  * its virtual address, and with only one read-only segment.
5  * This script controls its layout.
6  */
7 
8 SECTIONS
9 {
10 	. = VDSO_PRELINK + SIZEOF_HEADERS;
11 
12 	.hash		: { *(.hash) }			:text
13 	.gnu.hash	: { *(.gnu.hash) }
14 	.dynsym		: { *(.dynsym) }
15 	.dynstr		: { *(.dynstr) }
16 	.gnu.version	: { *(.gnu.version) }
17 	.gnu.version_d	: { *(.gnu.version_d) }
18 	.gnu.version_r	: { *(.gnu.version_r) }
19 
20 	.note		: { *(.note.*) }		:text	:note
21 
22 	.eh_frame_hdr	: { *(.eh_frame_hdr) }		:text	:eh_frame_hdr
23 	.eh_frame	: { KEEP (*(.eh_frame)) }	:text
24 
25 	.dynamic	: { *(.dynamic) }		:text	:dynamic
26 
27 	.rodata		: { *(.rodata*) }		:text
28 	.data		: {
29 	      *(.data*)
30 	      *(.sdata*)
31 	      *(.got.plt) *(.got)
32 	      *(.gnu.linkonce.d.*)
33 	      *(.bss*)
34 	      *(.dynbss*)
35 	      *(.gnu.linkonce.b.*)
36 	}
37 
38 	.altinstructions	: { *(.altinstructions) }
39 	.altinstr_replacement	: { *(.altinstr_replacement) }
40 
41 	/*
42 	 * Align the actual code well away from the non-instruction data.
43 	 * This is the best thing for the I-cache.
44 	 */
45 	. = ALIGN(0x100);
46 
47 	.text		: { *(.text*) }			:text	=0x90909090
48 }
49 
50 /*
51  * Very old versions of ld do not recognize this name token; use the constant.
52  */
53 #define PT_GNU_EH_FRAME	0x6474e550
54 
55 /*
56  * We must supply the ELF program headers explicitly to get just one
57  * PT_LOAD segment, and set the flags explicitly to make segments read-only.
58  */
59 PHDRS
60 {
61 	text		PT_LOAD		FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
62 	dynamic		PT_DYNAMIC	FLAGS(4);		/* PF_R */
63 	note		PT_NOTE		FLAGS(4);		/* PF_R */
64 	eh_frame_hdr	PT_GNU_EH_FRAME;
65 }
66