root/arch/mips/vdso/vdso.lds.S
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2015 Imagination Technologies
 * Author: Alex Smith <alex.smith@imgtec.com>
 */

#include <asm/sgidefs.h>
#include <asm/vdso/vdso.h>
#include <vdso/datapage.h>

#if _MIPS_SIM == _MIPS_SIM_ABI64
OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
#elif _MIPS_SIM == _MIPS_SIM_NABI32
OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips")
#else
OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradbigmips", "elf32-tradlittlemips")
#endif

OUTPUT_ARCH(mips)

SECTIONS
{
        VDSO_VVAR_SYMS

        . = SIZEOF_HEADERS;

        /*
         * In order to retain compatibility with older toolchains we provide the
         * ABI flags section ourself. Newer assemblers will automatically
         * generate .MIPS.abiflags sections so we discard such input sections,
         * and then manually define our own section here. genvdso will patch
         * this section to have the correct name/type.
         */
        .mips_abiflags  : { *(.mips_abiflags) }         :text :abiflags

        .reginfo        : { *(.reginfo) }               :text :reginfo

        .hash           : { *(.hash) }                  :text
        .gnu.hash       : { *(.gnu.hash) }
        .dynsym         : { *(.dynsym) }
        .dynstr         : { *(.dynstr) }
        .gnu.version    : { *(.gnu.version) }
        .gnu.version_d  : { *(.gnu.version_d) }
        .gnu.version_r  : { *(.gnu.version_r) }

        .note           : { *(.note.*) }                :text :note

        .text           : { *(.text*) }                 :text
        PROVIDE (__etext = .);
        PROVIDE (_etext = .);
        PROVIDE (etext = .);

        .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text :eh_frame_hdr
        .eh_frame       : { KEEP (*(.eh_frame)) }       :text

        .dynamic        : { *(.dynamic) }               :text :dynamic

        .rodata         : { *(.rodata*) }               :text

        _end = .;
        PROVIDE(end = .);

        /DISCARD/       : {
                *(.MIPS.abiflags)
                *(.gnu.attributes)
                *(.note.GNU-stack)
                *(.data .data.* .gnu.linkonce.d.* .sdata*)
                *(.bss .sbss .dynbss .dynsbss)
        }
}

PHDRS
{
        /*
         * Provide a PT_MIPS_ABIFLAGS header to assign the ABI flags section
         * to. We can specify the header type directly here so no modification
         * is needed later on.
         */
        abiflags        0x70000003;

        /*
         * The ABI flags header must exist directly after the PT_INTERP header,
         * so we must explicitly place the PT_MIPS_REGINFO header after it to
         * stop the linker putting one in at the start.
         */
        reginfo         0x70000000;

        text            PT_LOAD         FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
        dynamic         PT_DYNAMIC      FLAGS(4);               /* PF_R */
        note            PT_NOTE         FLAGS(4);               /* PF_R */
        eh_frame_hdr    PT_GNU_EH_FRAME;
}

VERSION
{
        LINUX_2.6 {
#ifndef CONFIG_MIPS_DISABLE_VDSO
        global:
                __vdso_clock_gettime;
#ifdef CONFIG_MIPS_CLOCK_VSYSCALL
                __vdso_gettimeofday;
#endif
                __vdso_clock_getres;
#if _MIPS_SIM != _MIPS_SIM_ABI64
                __vdso_clock_gettime64;
                __vdso_clock_getres_time64;
#endif
#endif
        local: *;
        };
}