arch/arm/vdso/vdso.lds.S

Source file repositories/reference/linux-study-clean/arch/arm/vdso/vdso.lds.S

File Facts

System
Linux kernel
Corpus path
arch/arm/vdso/vdso.lds.S
Extension
.S
Size
1686 bytes
Lines
81
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: arch/arm
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/const.h>
#include <asm/page.h>
#include <asm/vdso.h>
#include <vdso/datapage.h>

OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
OUTPUT_ARCH(arm)

SECTIONS
{
	VDSO_VVAR_SYMS

	. = SIZEOF_HEADERS;

	.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


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

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

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

	.text		: { *(.text*) }			:text	=0xe7f001f2

	.got		: { *(.got) }
	.rel.plt	: { *(.rel.plt) }

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

/*
 * We must supply the ELF program headers explicitly to get just one
 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
 */
PHDRS
{
	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 {
	global:
		__vdso_clock_gettime;
		__vdso_gettimeofday;
		__vdso_clock_getres;
		__vdso_clock_gettime64;
		__vdso_clock_getres_time64;
	local: *;
	};
}

Annotation

Implementation Notes