vdso.lds.S

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * Copyright (C) 2015 Imagination Technologies
  4 * Author: Alex Smith <alex.smith@imgtec.com>
  5 */
  6
  7#include <asm/sgidefs.h>
  8#include <asm/vdso/vdso.h>
  9#include <vdso/datapage.h>
 10
 11#if _MIPS_SIM == _MIPS_SIM_ABI64
 12OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
 13#elif _MIPS_SIM == _MIPS_SIM_NABI32
 14OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips")
 15#else
 16OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradbigmips", "elf32-tradlittlemips")
 17#endif
 18
 19OUTPUT_ARCH(mips)
 20
 21SECTIONS
 22{
 23	VDSO_VVAR_SYMS
 24
 25	. = SIZEOF_HEADERS;
 26
 27	/*
 28	 * In order to retain compatibility with older toolchains we provide the
 29	 * ABI flags section ourself. Newer assemblers will automatically
 30	 * generate .MIPS.abiflags sections so we discard such input sections,
 31	 * and then manually define our own section here. genvdso will patch
 32	 * this section to have the correct name/type.
 33	 */
 34	.mips_abiflags	: { *(.mips_abiflags) } 	:text :abiflags
 35
 36	.reginfo	: { *(.reginfo) }		:text :reginfo
 37
 38	.hash		: { *(.hash) }			:text
 39	.gnu.hash	: { *(.gnu.hash) }
 40	.dynsym		: { *(.dynsym) }
 41	.dynstr		: { *(.dynstr) }
 42	.gnu.version	: { *(.gnu.version) }
 43	.gnu.version_d	: { *(.gnu.version_d) }
 44	.gnu.version_r	: { *(.gnu.version_r) }
 45
 46	.note		: { *(.note.*) }		:text :note
 47
 48	.text		: { *(.text*) }			:text
 49	PROVIDE (__etext = .);
 50	PROVIDE (_etext = .);
 51	PROVIDE (etext = .);
 52
 53	.eh_frame_hdr	: { *(.eh_frame_hdr) }		:text :eh_frame_hdr
 54	.eh_frame	: { KEEP (*(.eh_frame)) }	:text
 55
 56	.dynamic	: { *(.dynamic) }		:text :dynamic
 57
 58	.rodata		: { *(.rodata*) }		:text
 59
 60	_end = .;
 61	PROVIDE(end = .);
 62
 63	/DISCARD/	: {
 64		*(.MIPS.abiflags)
 65		*(.gnu.attributes)
 66		*(.note.GNU-stack)
 67		*(.data .data.* .gnu.linkonce.d.* .sdata*)
 68		*(.bss .sbss .dynbss .dynsbss)
 69	}
 70}
 71
 72PHDRS
 73{
 74	/*
 75	 * Provide a PT_MIPS_ABIFLAGS header to assign the ABI flags section
 76	 * to. We can specify the header type directly here so no modification
 77	 * is needed later on.
 78	 */
 79	abiflags	0x70000003;
 80
 81	/*
 82	 * The ABI flags header must exist directly after the PT_INTERP header,
 83	 * so we must explicitly place the PT_MIPS_REGINFO header after it to
 84	 * stop the linker putting one in at the start.
 85	 */
 86	reginfo		0x70000000;
 87
 88	text		PT_LOAD		FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
 89	dynamic		PT_DYNAMIC	FLAGS(4);		/* PF_R */
 90	note		PT_NOTE		FLAGS(4);		/* PF_R */
 91	eh_frame_hdr	PT_GNU_EH_FRAME;
 92}
 93
 94VERSION
 95{
 96	LINUX_2.6 {
 97#ifndef CONFIG_MIPS_DISABLE_VDSO
 98	global:
 99		__vdso_clock_gettime;
100#ifdef CONFIG_MIPS_CLOCK_VSYSCALL
101		__vdso_gettimeofday;
102#endif
103		__vdso_clock_getres;
104#if _MIPS_SIM != _MIPS_SIM_ABI64
105		__vdso_clock_gettime64;
106#endif
107#endif
108	local: *;
109	};
110}