9e07352ef7
When building the 32-bit vDSO with LLVM 15 and CONFIG_DEBUG_INFO, there
are the following orphan section warnings:
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_abbrev) is being placed in '.debug_abbrev'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_info) is being placed in '.debug_info'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_str_offsets) is being placed in '.debug_str_offsets'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_str) is being placed in '.debug_str'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_addr) is being placed in '.debug_addr'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_line) is being placed in '.debug_line'
ld.lld: warning: arch/arm64/kernel/vdso32/note.o:(.debug_line_str) is being placed in '.debug_line_str'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_loclists) is being placed in '.debug_loclists'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_abbrev) is being placed in '.debug_abbrev'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_info) is being placed in '.debug_info'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_rnglists) is being placed in '.debug_rnglists'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_str_offsets) is being placed in '.debug_str_offsets'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_str) is being placed in '.debug_str'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_addr) is being placed in '.debug_addr'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_frame) is being placed in '.debug_frame'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_line) is being placed in '.debug_line'
ld.lld: warning: arch/arm64/kernel/vdso32/vgettimeofday.o:(.debug_line_str) is being placed in '.debug_line_str'
These are DWARF5 sections, as that is the implicit default version for
clang-14 and newer when just '-g' is used. All DWARF sections are
handled by the DWARF_DEBUG macro from include/asm-generic/vmlinux.lds.h
so use that macro here to fix the warnings regardless of DWARF version.
Fixes: 9d4775b332e1 ("arm64: vdso32: enable orphan handling for VDSO")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20220630153121.1317045-3-nathan@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
93 lines
1.8 KiB
ArmAsm
93 lines
1.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Adapted from arm64 version.
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*
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* GNU linker script for the VDSO library.
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* Heavily based on the vDSO linker scripts for other archs.
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*
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* Copyright (C) 2012-2018 ARM Limited
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*/
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#include <linux/const.h>
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#include <asm/page.h>
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#include <asm/vdso.h>
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#include <asm-generic/vmlinux.lds.h>
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OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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SECTIONS
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{
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PROVIDE_HIDDEN(_vdso_data = . - __VVAR_PAGES * PAGE_SIZE);
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#ifdef CONFIG_TIME_NS
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PROVIDE_HIDDEN(_timens_data = _vdso_data + PAGE_SIZE);
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#endif
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. = VDSO_LBASE + SIZEOF_HEADERS;
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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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.dynamic : { *(.dynamic) } :text :dynamic
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.rodata : {
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*(.rodata*)
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*(.got)
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*(.got.plt)
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*(.plt)
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*(.rel.iplt)
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*(.iplt)
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*(.igot.plt)
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} :text
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.text : {
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*(.text*)
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*(.glue_7)
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*(.glue_7t)
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*(.vfp11_veneer)
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*(.v4_bx)
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} :text =0xe7f001f2
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.rel.dyn : { *(.rel*) }
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.ARM.exidx : { *(.ARM.exidx*) }
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DWARF_DEBUG
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ELF_DETAILS
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.ARM.attributes 0 : { *(.ARM.attributes) }
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/DISCARD/ : {
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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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/*
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* We must supply the ELF program headers explicitly to get just one
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* PT_LOAD segment, and set the flags explicitly to make segments read-only.
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*/
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PHDRS
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{
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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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}
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VERSION
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{
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LINUX_2.6 {
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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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__vdso_clock_gettime64;
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local: *;
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};
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}
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