>> 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
1 /* 2 /*
2 * Linker script for 64-bit vDSO. !! 3 * Copyright (C) 2015 Imagination Technologies
3 * We #include the file to define the layout d !! 4 * Author: Alex Smith <alex.smith@imgtec.com>
4 * <<
5 * This file defines the version script giving <<
6 * the DSO. <<
7 */ 5 */
8 6
9 #define BUILD_VDSO64 !! 7 #include <asm/sgidefs.h>
10 8
11 #include "vdso-layout.lds.S" !! 9 #if _MIPS_SIM == _MIPS_SIM_ABI64
>> 10 OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
>> 11 #elif _MIPS_SIM == _MIPS_SIM_NABI32
>> 12 OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips")
>> 13 #else
>> 14 OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradbigmips", "elf32-tradlittlemips")
>> 15 #endif
12 16
13 /* !! 17 OUTPUT_ARCH(mips)
14 * This controls what userland symbols we expo !! 18
15 */ !! 19 SECTIONS
16 VERSION { !! 20 {
>> 21 PROVIDE(_start = .);
>> 22 . = SIZEOF_HEADERS;
>> 23
>> 24 /*
>> 25 * In order to retain compatibility with older toolchains we provide the
>> 26 * ABI flags section ourself. Newer assemblers will automatically
>> 27 * generate .MIPS.abiflags sections so we discard such input sections,
>> 28 * and then manually define our own section here. genvdso will patch
>> 29 * this section to have the correct name/type.
>> 30 */
>> 31 .mips_abiflags : { *(.mips_abiflags) } :text :abiflags
>> 32
>> 33 .reginfo : { *(.reginfo) } :text :reginfo
>> 34
>> 35 .hash : { *(.hash) } :text
>> 36 .gnu.hash : { *(.gnu.hash) }
>> 37 .dynsym : { *(.dynsym) }
>> 38 .dynstr : { *(.dynstr) }
>> 39 .gnu.version : { *(.gnu.version) }
>> 40 .gnu.version_d : { *(.gnu.version_d) }
>> 41 .gnu.version_r : { *(.gnu.version_r) }
>> 42
>> 43 .note : { *(.note.*) } :text :note
>> 44
>> 45 .text : { *(.text*) } :text
>> 46 PROVIDE (__etext = .);
>> 47 PROVIDE (_etext = .);
>> 48 PROVIDE (etext = .);
>> 49
>> 50 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
>> 51 .eh_frame : { KEEP (*(.eh_frame)) } :text
>> 52
>> 53 .dynamic : { *(.dynamic) } :text :dynamic
>> 54
>> 55 .rodata : { *(.rodata*) } :text
>> 56
>> 57 _end = .;
>> 58 PROVIDE(end = .);
>> 59
>> 60 /DISCARD/ : {
>> 61 *(.MIPS.abiflags)
>> 62 *(.gnu.attributes)
>> 63 *(.note.GNU-stack)
>> 64 *(.data .data.* .gnu.linkonce.d.* .sdata*)
>> 65 *(.bss .sbss .dynbss .dynsbss)
>> 66 }
>> 67 }
>> 68
>> 69 PHDRS
>> 70 {
>> 71 /*
>> 72 * Provide a PT_MIPS_ABIFLAGS header to assign the ABI flags section
>> 73 * to. We can specify the header type directly here so no modification
>> 74 * is needed later on.
>> 75 */
>> 76 abiflags 0x70000003;
>> 77
>> 78 /*
>> 79 * The ABI flags header must exist directly after the PT_INTERP header,
>> 80 * so we must explicitly place the PT_MIPS_REGINFO header after it to
>> 81 * stop the linker putting one in at the start.
>> 82 */
>> 83 reginfo 0x70000000;
>> 84
>> 85 text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
>> 86 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
>> 87 note PT_NOTE FLAGS(4); /* PF_R */
>> 88 eh_frame_hdr PT_GNU_EH_FRAME;
>> 89 }
>> 90
>> 91 VERSION
>> 92 {
17 LINUX_2.6 { 93 LINUX_2.6 {
>> 94 #ifndef CONFIG_MIPS_DISABLE_VDSO
18 global: 95 global:
19 clock_gettime; <<
20 __vdso_clock_gettime; 96 __vdso_clock_gettime;
21 __vdso_clock_gettime_stick; !! 97 #ifdef CONFIG_MIPS_CLOCK_VSYSCALL
22 gettimeofday; <<
23 __vdso_gettimeofday; 98 __vdso_gettimeofday;
24 __vdso_gettimeofday_stick; !! 99 #endif
>> 100 __vdso_clock_getres;
>> 101 #if _MIPS_SIM != _MIPS_SIM_ABI64
>> 102 __vdso_clock_gettime64;
>> 103 #endif
>> 104 #endif
25 local: *; 105 local: *;
26 }; 106 };
27 } 107 }
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