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e91946d6d9
After commit 9553d16fa6 ("init/kconfig: Add LD_VERSION Kconfig"), we
have access to GNU ld's version at configuration time. As a result, we
can make it clearer under what configuration circumstances the MIPS VDSO
needs to be disabled.
This is a prerequisite for getting rid of the MIPS VDSO binutils
warning and linking the VDSO when LD is ld.lld. Wrapping the call to
ld-ifversion with CONFIG_LD_IS_LLD does not work because the config
values are wiped away during 'make clean'.
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
106 lines
2.5 KiB
ArmAsm
106 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2015 Imagination Technologies
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* Author: Alex Smith <alex.smith@imgtec.com>
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*/
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#include <asm/sgidefs.h>
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#if _MIPS_SIM == _MIPS_SIM_ABI64
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OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
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#elif _MIPS_SIM == _MIPS_SIM_NABI32
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OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips")
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#else
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OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradbigmips", "elf32-tradlittlemips")
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#endif
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OUTPUT_ARCH(mips)
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SECTIONS
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{
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PROVIDE(_start = .);
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. = SIZEOF_HEADERS;
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/*
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* In order to retain compatibility with older toolchains we provide the
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* ABI flags section ourself. Newer assemblers will automatically
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* generate .MIPS.abiflags sections so we discard such input sections,
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* and then manually define our own section here. genvdso will patch
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* this section to have the correct name/type.
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*/
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.mips_abiflags : { *(.mips_abiflags) } :text :abiflags
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.reginfo : { *(.reginfo) } :text :reginfo
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.hash : { *(.hash) } :text
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.gnu.hash : { *(.gnu.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.gnu.version : { *(.gnu.version) }
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.gnu.version_d : { *(.gnu.version_d) }
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.gnu.version_r : { *(.gnu.version_r) }
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.note : { *(.note.*) } :text :note
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.text : { *(.text*) } :text
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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.eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
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.eh_frame : { KEEP (*(.eh_frame)) } :text
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.dynamic : { *(.dynamic) } :text :dynamic
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.rodata : { *(.rodata*) } :text
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_end = .;
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PROVIDE(end = .);
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/DISCARD/ : {
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*(.MIPS.abiflags)
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*(.gnu.attributes)
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*(.note.GNU-stack)
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*(.data .data.* .gnu.linkonce.d.* .sdata*)
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*(.bss .sbss .dynbss .dynsbss)
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}
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}
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PHDRS
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{
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/*
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* Provide a PT_MIPS_ABIFLAGS header to assign the ABI flags section
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* to. We can specify the header type directly here so no modification
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* is needed later on.
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*/
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abiflags 0x70000003;
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/*
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* The ABI flags header must exist directly after the PT_INTERP header,
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* so we must explicitly place the PT_MIPS_REGINFO header after it to
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* stop the linker putting one in at the start.
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*/
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reginfo 0x70000000;
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text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
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dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
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note PT_NOTE FLAGS(4); /* PF_R */
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eh_frame_hdr PT_GNU_EH_FRAME;
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}
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VERSION
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{
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LINUX_2.6 {
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#ifndef CONFIG_MIPS_DISABLE_VDSO
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global:
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__vdso_clock_gettime;
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__vdso_gettimeofday;
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__vdso_clock_getres;
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#if _MIPS_SIM != _MIPS_SIM_ABI64
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__vdso_clock_gettime64;
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#endif
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#endif
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local: *;
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};
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}
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