1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * This is the infamous ld script for the 64 bits vdso
4 * library
5 */
6 #include <asm/vdso.h>
7 #include <asm/page.h>
8 #include <asm-generic/vmlinux.lds.h>
9
10 #ifdef __LITTLE_ENDIAN__
11 OUTPUT_FORMAT("elf64-powerpcle", "elf64-powerpcle", "elf64-powerpcle")
12 #else
13 OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc", "elf64-powerpc")
14 #endif
15 OUTPUT_ARCH(powerpc:common64)
16
17 SECTIONS
18 {
19 PROVIDE(_vdso_datapage = . - 2 * PAGE_SIZE);
20 . = SIZEOF_HEADERS;
21
22 .hash : { *(.hash) } :text
23 .gnu.hash : { *(.gnu.hash) }
24 .dynsym : { *(.dynsym) }
25 .dynstr : { *(.dynstr) }
26 .gnu.version : { *(.gnu.version) }
27 .gnu.version_d : { *(.gnu.version_d) }
28 .gnu.version_r : { *(.gnu.version_r) }
29
30 .note : { *(.note.*) } :text :note
31
32 . = ALIGN(16);
33 .text : {
34 *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
35 *(.sfpr)
36 } :text
37 PROVIDE(__etext = .);
38 PROVIDE(_etext = .);
39 PROVIDE(etext = .);
40
41 . = ALIGN(8);
42 VDSO_ftr_fixup_start = .;
43 __ftr_fixup : { *(__ftr_fixup) }
44 VDSO_ftr_fixup_end = .;
45
46 . = ALIGN(8);
47 VDSO_mmu_ftr_fixup_start = .;
48 __mmu_ftr_fixup : { *(__mmu_ftr_fixup) }
49 VDSO_mmu_ftr_fixup_end = .;
50
51 . = ALIGN(8);
52 VDSO_lwsync_fixup_start = .;
53 __lwsync_fixup : { *(__lwsync_fixup) }
54 VDSO_lwsync_fixup_end = .;
55
56 . = ALIGN(8);
57 VDSO_fw_ftr_fixup_start = .;
58 __fw_ftr_fixup : { *(__fw_ftr_fixup) }
59 VDSO_fw_ftr_fixup_end = .;
60
61 /*
62 * Other stuff is appended to the text segment:
63 */
64 .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
65 .rodata1 : { *(.rodata1) }
66
67 .dynamic : { *(.dynamic) } :text :dynamic
68
69 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
70 .eh_frame : { KEEP (*(.eh_frame)) } :text
71 .gcc_except_table : { *(.gcc_except_table) }
72 .rela.dyn ALIGN(8) : { *(.rela .rela*) }
73
74 .got ALIGN(8) : { *(.got .toc) }
75
76 _end = .;
77 PROVIDE(end = .);
78
79 DWARF_DEBUG
80 ELF_DETAILS
81
82 /DISCARD/ : {
83 *(.note.GNU-stack)
84 *(*.EMB.apuinfo)
85 *(.branch_lt)
86 *(.data .data.* .gnu.linkonce.d.* .sdata*)
87 *(.bss .sbss .dynbss .dynsbss)
88 *(.opd)
89 *(.glink .iplt .plt)
90 }
91 }
92
93 /*
94 * Very old versions of ld do not recognize this name token; use the constant.
95 */
96 #define PT_GNU_EH_FRAME 0x6474e550
97
98 /*
99 * We must supply the ELF program headers explicitly to get just one
100 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
101 */
102 PHDRS
103 {
104 text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
105 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
106 note PT_NOTE FLAGS(4); /* PF_R */
107 eh_frame_hdr PT_GNU_EH_FRAME;
108 }
109
110 /*
111 * This controls what symbols we export from the DSO.
112 */
113 VERSION
114 {
115 VDSO_VERSION_STRING {
116 global:
117 __kernel_get_syscall_map;
118 __kernel_gettimeofday;
119 __kernel_clock_gettime;
120 __kernel_clock_getres;
121 __kernel_get_tbfreq;
122 __kernel_sync_dicache;
123 __kernel_sigtramp_rt64;
124 __kernel_getcpu;
125 __kernel_time;
126 __kernel_getrandom;
127
128 local: *;
129 };
130 }
131
132 /*
133 * Make the sigreturn code visible to the kernel.
134 */
135 VDSO_sigtramp_rt64 = __kernel_start_sigtramp_rt64;
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.