vmlinux-lds 连接器脚本

vmlinux-lds 连接器脚本

/*
 * Automatically generated C config: don't edit
 * Linux/arm 3.0.15 Kernel Configuration
 */
/* ld script to make ARM Linux kernel
 * taken from the i386 version by Russell King
 * Written by Martin Mares
 */
/*
 * Helper macros to support writing architecture specific
 * linker scripts.
 *
 * A minimal linker scripts has following content:
 * [This is a sample, architectures may have special requiriements]
 *
 * OUTPUT_FORMAT(...)
 * OUTPUT_ARCH(...)
 * ENTRY(...)
 * SECTIONS
 * {
 * . = START;
 * __init_begin = .;
 * HEAD_TEXT_SECTION
 * INIT_TEXT_SECTION(PAGE_SIZE)
 * INIT_DATA_SECTION(...)
 * PERCPU_SECTION(CACHELINE_SIZE)
 * __init_end = .;
 *
 * _stext = .;
 * TEXT_SECTION = 0
 * _etext = .;
 *
 *      _sdata = .;
 * RO_DATA_SECTION(PAGE_SIZE)
 * RW_DATA_SECTION(...)
 * _edata = .;
 *
 * EXCEPTION_TABLE(...)
 * NOTES
 *
 * BSS_SECTION(0, 0, 0)
 * _end = .;
 *
 * STABS_DEBUG
 * DWARF_DEBUG
 *
 * DISCARDS  // must be the last
 * }
 *
 * [__init_begin, __init_end] is the init section that may be freed after init
 * [_stext, _etext] is the text section
 * [_sdata, _edata] is the data section
 *
 * Some of the included output section have their own set of constants.
 * Examples are: [__initramfs_start, __initramfs_end] for initramfs and
 *               [__nosave_begin, __nosave_end] for the nosave data
 */

/* Align . to a 8 byte boundary equals to maximum function alignment. */

/*
 * Align to a 32 byte boundary equal to the
 * alignment gcc 4.5 uses for a struct
 */

/* The actual configuration determine if the init/exit sections
 * are handled as text/data or they can be discarded (which
 * often happens at runtime)
 */
/* .data section */
/*
 * Data section helpers
 */
/*
 * Read only Data
 */
/* RODATA & RO_DATA provided for backward compatibility.
 * All archs are supposed to use RO_DATA() */
/* .text section. Map to function alignment to avoid address changes
 * during second ld run in second ld pass when generating System.map */
/* sched.text is aling to function alignment to secure we have same
 * address even at second ld pass when generating System.map */
/* spinlock.text is aling to function alignment to secure we have same
 * address even at second ld pass when generating System.map */
/* Section used for early init (in .S files) */
/*
 * Exception table
 */
/*
 * Init task
 */
/* init and exit section handling */
/*
 * bss (Block Started by Symbol) - uninitialized data
 * zeroed during startup
 */
/*
 * DWARF debug sections.
 * Symbols in the DWARF debugging sections are relative to
 * the beginning of the section so we begin them at 0.
 */
  /* Stabs debugging sections.  */
/*
 * Default discarded sections.
 *
 * Some archs want to discard exit text/data at runtime rather than
 * link time due to cross-section references such as alt instructions,
 * bug table, eh_frame, etc.  DISCARDS must be the last of output
 * section definitions so that such archs put those in earlier section
 * definitions.
 */
/**
 * PERCPU_INPUT - the percpu input sections
 * @cacheline: cacheline size
 *
 * The core percpu section names and core symbols which do not rely
 * directly upon load addresses.
 *
 * @cacheline is used to align subsections to avoid false cacheline
 * sharing between subsections for different purposes.
 */
/**
 * PERCPU_VADDR - define output section for percpu area
 * @cacheline: cacheline size
 * @vaddr: explicit base address (optional)
 * @phdr: destination PHDR (optional)
 *
 * Macro which expands to output section for percpu area.
 *
 * @cacheline is used to align subsections to avoid false cacheline
 * sharing between subsections for different purposes.
 *
 * If @vaddr is not blank, it specifies explicit base address and all
 * percpu symbols will be offset from the given address.  If blank,
 * @vaddr always equals @laddr + LOAD_OFFSET.
 *
 * @phdr defines the output PHDR to use if not blank.  Be warned that
 * output PHDR is sticky.  If @phdr is specified, the next output
 * section in the linker script will go there too.  @phdr should have
 * a leading colon.
 *
 * Note that this macros defines __per_cpu_load as an absolute symbol.
 * If there is no need to put the percpu section at a predetermined
 * address, use PERCPU_SECTION.
 */
/**
 * PERCPU_SECTION - define output section for percpu area, simple version
 * @cacheline: cacheline size
 *
 * Align to PAGE_SIZE and outputs output section for percpu area.  This
 * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
 * __per_cpu_start will be identical.
 *
 * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
 * except that __per_cpu_load is defined as a relative symbol against
 * .data..percpu which is required for relocatable x86_32 configuration.
 */
/*
 * Definition of the high level *_SECTION macros
 * They will fit only a subset of the architectures
 */
/*
 * Writeable data.
 * All sections are combined in a single .data section.
 * The sections following CONSTRUCTORS are arranged so their
 * typical alignment matches.
 * A cacheline is typical/always less than a PAGE_SIZE so
 * the sections that has this restriction (or similar)
 * is located before the ones requiring PAGE_SIZE alignment.
 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
 * matches the requirement of PAGE_ALIGNED_DATA.
 *
 * use 0 as page_align if page_aligned data is not used */
/*
 *  arch/arm/include/asm/thread_info.h
 *
 *  Copyright (C) 2002 Russell King.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
/*
 * Allow us to mark functions as 'deprecated' and have gcc emit a nice
 * warning for each use, in hopes of speeding the functions removal.
 * Usage is:
 *   int __deprecated foo(void)
 */

/*
 * Allow us to avoid 'defined but not used' warnings on functions and data,
 * as well as force them to be emitted to the assembly file.
 *
 * As of gcc 3.4, static functions that are not marked with attribute((used))
 * may be elided from the assembly file.  As of gcc 3.4, static data not so
 * marked will not be elided, but this may change in a future gcc version.
 *
 * NOTE: Because distributions shipped with a backported unit-at-a-time
 * compiler in gcc 3.3, we must define __used to be __attribute__((used))
 * for gcc >=3.3 instead of 3.4.
 *
 * In prior versions of gcc, such functions and data would be emitted, but
 * would be warned about except with attribute((unused)).
 *
 * Mark functions that are referenced only in inline assembly as __used so
 * the code is emitted even though it appears to be unreferenced.
 */
/*
 * Rather then using noinline to prevent stack consumption, use
 * noinline_for_stack instead.  For documentaiton reasons.
 */
/*
 * From the GCC manual:
 *
 * Many functions do not examine any values except their arguments,
 * and have no effects except the return value.  Basically this is
 * just slightly more strict class than the `pure' attribute above,
 * since function is not allowed to read global memory.
 *
 * Note that a function that has pointer arguments and examines the
 * data pointed to must _not_ be declared `const'.  Likewise, a
 * function that calls a non-`const' function usually must not be
 * `const'.  It does not make sense for a `const' function to return
 * `void'.
 */
/*
 * Tell gcc if a function is cold. The compiler will assume any path
 * directly leading to the call is unlikely.
 */
/* Simple shorthand for a section definition */
/* Are two types/vars the same type (ignoring qualifiers)? */
/* Compile time object size, -1 for unknown */
/*
 * Prevent the compiler from merging or refetching accesses.  The compiler
 * is also forbidden from reordering successive instances of ACCESS_ONCE(),
 * but only when the compiler is aware of some particular ordering.  One way
 * to make the compiler aware of ordering is to put the two invocations of
 * ACCESS_ONCE() in different C statements.
 *
 * This macro does absolutely -nothing- to prevent the CPU from reordering,
 * merging, or refetching absolutely anything at any time.  Its main intended
 * use is to mediate communication between process-level code and irq/NMI
 * handlers, all running on the same CPU.
 */
/*
 *  arch/arm/include/asm/fpstate.h
 *
 *  Copyright (C) 1995 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
/*
 * We use bit 30 of the preempt_count to indicate that kernel
 * preemption is occurring.  See .
 */
/*
 * thread information flags:
 *  TIF_SYSCALL_TRACE - syscall trace active
 *  TIF_SIGPENDING - signal pending
 *  TIF_NEED_RESCHED - rescheduling necessary
 *  TIF_NOTIFY_RESUME - callback before returning to user
 *  TIF_USEDFPU  - FPU was used by this task this quantum (SMP)
 *  TIF_POLLING_NRFLAG - true if poll_idle() is polling TIF_NEED_RESCHED
 */
/*
 * Change these and you break ASM code in entry-common.S
 */
/*
 *  arch/arm/include/asm/memory.h
 *
 *  Copyright (C) 2000-2002 Russell King
 *  modification for nommu, Hyok S. Choi, 2004
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Note: this file should not be included by non-asm/.h files
 */
/* const.h: Macros for dealing with constants.  */
/* Some constant macros are used in both assembler and
 * C code.  Therefore we cannot annotate them always with
 * 'UL' and other type specifiers unilaterally.  We
 * use the following macros to deal with this.
 *
 * Similarly, _AT() will cast an expression with a type in C, but
 * leave it unchanged in asm.
 */
/*
 * asm-generic/int-ll64.h
 *
 * Integer declarations for architectures which use "long long"
 * for 64-bit types.
 */
/*
 * There seems to be no way of detecting this automatically from user
 * space, so 64 bit architectures should override this in their
 * bitsperlong.h. In particular, an architecture that supports
 * both 32 and 64 bit user space must not rely on CONFIG_64BIT
 * to decide it, but rather check a compiler provided macro.
 */
/*
 * FIXME: The check currently breaks x86-64 build, so it's
 * temporarily disabled. Please fix x86-64 and reenable
 */
/*
 * These aren't exported outside the kernel to avoid name space clashes
 */
/* linux/arch/arm/mach-exynos/include/mach/memory.h
 *
 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
 *  
 *
 * EXYNOS4 - Memory definitions
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/
/* Maximum of 256MiB in one bank */
/* Required by ION to allocate scatterlist(sglist) with nents > 256 */
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
/*  Size definitions
 *  Copyright (C) ARM Limited 1998. All rights reserved.
 */
/*
 * linux/include/asm-generic/sizes.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
/*
 * Allow for constants defined here to be used from assembly code
 * by prepending the UL suffix only with actual C code compilation.
 */
/*
 * PAGE_OFFSET - the virtual address of the start of the kernel image
 * TASK_SIZE - the maximum size of a user space task.
 * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
 */
/*
 * The maximum size of a 26-bit user space task.
 */
/*
 * The module space lives between the addresses given by TASK_SIZE
 * and PAGE_OFFSET - it must be within 32MB of the kernel text.
 */
/*
 * The highmem pkmap virtual space shares the end of the module area.
 */
/*
 * The XIP kernel gets mapped at the bottom of the module vm area.
 * Since we use sections to map it, this macro replaces the physical address
 * with its virtual address while keeping offset from the base section.
 */
/*
 * Allow 16MB-aligned ioremap pages
 */
/*
 * Size of DMA-consistent memory region.  Must be multiple of 2M,
 * between 2MB and 14MB inclusive.
 */
/*
 * We fix the TCM memories max 32 KiB ITCM resp DTCM at these
 * locations
 */
/*
 * Convert a physical address to a Page Frame Number and back
 */
/*
 * Convert a page to/from a physical address
 */
/*
 *  arch/arm/include/asm/page.h
 *
 *  Copyright (C) 1995-2003 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
/* PAGE_SHIFT determines the page size */
OUTPUT_ARCH(arm)
ENTRY(stext)
jiffies = jiffies_64;
SECTIONS
{
 . = 0xC0000000 + 0x00008000;
 .init : { /* Init code and data  */
  _stext = .;
  _sinittext = .;
   *(.head.text)
   *(.init.text) *(.meminit.text)
   *(.exit.text) *(.memexit.text)
  _einittext = .;
 
  __arch_info_begin = .;
   *(.arch.info.init)
  __arch_info_end = .;
  __tagtable_begin = .;
   *(.taglist.init)
  __tagtable_end = .;
  __smpalt_begin = .;
   *(.alt.smp.init)
  __smpalt_end = .;
  __pv_table_begin = .;
   *(.pv_table)
  __pv_table_end = .;
  . = ALIGN(16); __setup_start = .; *(.init.setup) __setup_end = .;
  __initcall_start = .; *(.initcallearly.init) __early_initcall_end = .; *(.initcall0.init) *(.initcall0s.init) *(.initcall1.init) *(.initcall1s.init) *(.initcall2.init) *(.initcall2s.init) *(.initcall3.init) *(.initcall3s.init) *(.initcall4.init) *(.initcall4s.init) *(.initcall5.init) *(.initcall5s.init) *(.initcallrootfs.init) *(.initcall6.init) *(.initcall6s.init) *(.initcall7.init) *(.initcall7s.init) __initcall_end = .;
  __con_initcall_start = .; *(.con_initcall.init) __con_initcall_end = .;
  __security_initcall_start = .; *(.security_initcall.init) __security_initcall_end = .;
  . = ALIGN(4); __initramfs_start = .; *(.init.ramfs) . = ALIGN(8); *(.init.ramfs.info)
  __init_begin = _stext;
  *(.init.data) *(.meminit.data) *(.init.rodata) *(.meminit.rodata) . = ALIGN(32); __dtb_start = .; *(.dtb.init.rodata) __dtb_end = .;
  *(.exit.data) *(.memexit.data) *(.memexit.rodata)
 }
 . = ALIGN((1 << 12)); .data..percpu : AT(ADDR(.data..percpu) - 0) { __per_cpu_load = .; __per_cpu_start = .; *(.data..percpu..first) . = ALIGN((1 << 12)); *(.data..percpu..page_aligned) . = ALIGN(32); *(.data..percpu..readmostly) . = ALIGN(32); *(.data..percpu) *(.data..percpu..shared_aligned) __per_cpu_end = .; }
 . = ALIGN((1 << 12));
 __init_end = .;
 /*
  * unwind exit sections must be discarded before the rest of the
  * unwind sections get included.
  */
 /DISCARD/ : {
  *(.ARM.exidx.exit.text)
  *(.ARM.extab.exit.text)
 
 
 }
 .text : { /* Real text segment  */
  _text = .; /* Text and read-only data */
   __exception_text_start = .;
   *(.exception.text)
   __exception_text_end = .;
 
   . = ALIGN(8); *(.text.hot) *(.text) *(.ref.text) *(.devinit.text) *(.devexit.text) *(.cpuinit.text) *(.cpuexit.text) *(.text.unlikely)
   . = ALIGN(8); __sched_text_start = .; *(.sched.text) __sched_text_end = .;
   . = ALIGN(8); __lock_text_start = .; *(.spinlock.text) __lock_text_end = .;
   . = ALIGN(8); __kprobes_text_start = .; *(.kprobes.text) __kprobes_text_end = .;
   *(.fixup)
   *(.gnu.warning)
   *(.rodata)
   *(.rodata.*)
   *(.glue_7)
   *(.glue_7t)
  . = ALIGN(4);
  *(.got) /* Global offset table  */
   __proc_info_begin = .; *(.proc.info.init) __proc_info_end = .;
 }
 . = ALIGN(((1 << 12))); .rodata : AT(ADDR(.rodata) - 0) { __start_rodata = .; *(.rodata) *(.rodata.*) *(__vermagic) . = ALIGN(8); __start___tracepoints_ptrs = .; *(__tracepoints_ptrs) __stop___tracepoints_ptrs = .; *(__markers_strings) *(__tracepoints_strings) } .rodata1 : AT(ADDR(.rodata1) - 0) { *(.rodata1) } .pci_fixup : AT(ADDR(.pci_fixup) - 0) { __start_pci_fixups_early = .; *(.pci_fixup_early) __end_pci_fixups_early = .; __start_pci_fixups_header = .; *(.pci_fixup_header) __end_pci_fixups_header = .; __start_pci_fixups_final = .; *(.pci_fixup_final) __end_pci_fixups_final = .; __start_pci_fixups_enable = .; *(.pci_fixup_enable) __end_pci_fixups_enable = .; __start_pci_fixups_resume = .; *(.pci_fixup_resume) __end_pci_fixups_resume = .; __start_pci_fixups_resume_early = .; *(.pci_fixup_resume_early) __end_pci_fixups_resume_early = .; __start_pci_fixups_suspend = .; *(.pci_fixup_suspend) __end_pci_fixups_suspend = .; } .builtin_fw : AT(ADDR(.builtin_fw) - 0) { __start_builtin_fw = .; *(.builtin_fw) __end_builtin_fw = .; } .rio_ops : AT(ADDR(.rio_ops) - 0) { __start_rio_switch_ops = .; *(.rio_switch_ops) __end_rio_switch_ops = .; } __ksymtab : AT(ADDR(__ksymtab) - 0) { __start___ksymtab = .; *(SORT(___ksymtab+*)) __stop___ksymtab = .; } __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - 0) { __start___ksymtab_gpl = .; *(SORT(___ksymtab_gpl+*)) __stop___ksymtab_gpl = .; } __ksymtab_unused : AT(ADDR(__ksymtab_unused) - 0) { __start___ksymtab_unused = .; *(SORT(___ksymtab_unused+*)) __stop___ksymtab_unused = .; } __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - 0) { __start___ksymtab_unused_gpl = .; *(SORT(___ksymtab_unused_gpl+*)) __stop___ksymtab_unused_gpl = .; } __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - 0) { __start___ksymtab_gpl_future = .; *(SORT(___ksymtab_gpl_future+*)) __stop___ksymtab_gpl_future = .; } __kcrctab : AT(ADDR(__kcrctab) - 0) { __start___kcrctab = .; *(SORT(___kcrctab+*)) __stop___kcrctab = .; } __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - 0) { __start___kcrctab_gpl = .; *(SORT(___kcrctab_gpl+*)) __stop___kcrctab_gpl = .; } __kcrctab_unused : AT(ADDR(__kcrctab_unused) - 0) { __start___kcrctab_unused = .; *(SORT(___kcrctab_unused+*)) __stop___kcrctab_unused = .; } __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - 0) { __start___kcrctab_unused_gpl = .; *(SORT(___kcrctab_unused_gpl+*)) __stop___kcrctab_unused_gpl = .; } __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - 0) { __start___kcrctab_gpl_future = .; *(SORT(___kcrctab_gpl_future+*)) __stop___kcrctab_gpl_future = .; } __ksymtab_strings : AT(ADDR(__ksymtab_strings) - 0) { *(__ksymtab_strings) } __init_rodata : AT(ADDR(__init_rodata) - 0) { *(.ref.rodata) *(.devinit.rodata) *(.devexit.rodata) *(.cpuinit.rodata) *(.cpuexit.rodata) } __param : AT(ADDR(__param) - 0) { __start___param = .; *(__param) __stop___param = .; } __modver : AT(ADDR(__modver) - 0) { __start___modver = .; *(__modver) __stop___modver = .; . = ALIGN(((1 << 12))); __end_rodata = .; } . = ALIGN(((1 << 12)));
 _etext = .; /* End of text and rodata section */
 . = ALIGN(8192);
 __data_loc = .;
 .data : AT(__data_loc) {
  _data = .; /* address in memory */
  _sdata = .;
  /*
   * first, the init task union, aligned
   * to an 8192 byte boundary.
   */
  . = ALIGN(8192); *(.data..init_task)
  . = ALIGN((1 << 12)); __nosave_begin = .; *(.data..nosave) . = ALIGN((1 << 12)); __nosave_end = .;
  . = ALIGN(32); *(.data..cacheline_aligned)
  . = ALIGN(32); *(.data..read_mostly) . = ALIGN(32);
  /*
   * The exception fixup table (might need resorting at runtime)
   */
  . = ALIGN(32);
  __start___ex_table = .;
  *(__ex_table)
  __stop___ex_table = .;
  /*
   * and the usual data section
   */
  *(.data) *(.ref.data) *(.data..shared_aligned) *(.devinit.data) *(.devexit.data) *(.cpuinit.data) *(.cpuexit.data) . = ALIGN(32); *(__tracepoints) . = ALIGN(8); __start___jump_table = .; *(__jump_table) __stop___jump_table = .; . = ALIGN(8); __start___verbose = .; *(__verbose) __stop___verbose = .;
  CONSTRUCTORS
  _edata = .;
 }
 _edata_loc = __data_loc + SIZEOF(.data);
 .notes : AT(ADDR(.notes) - 0) { __start_notes = .; *(.note.*) __stop_notes = .; }
 . = ALIGN(0); __bss_start = .; . = ALIGN(0); .sbss : AT(ADDR(.sbss) - 0) { *(.sbss) *(.scommon) } . = ALIGN(0); .bss : AT(ADDR(.bss) - 0) { *(.bss..page_aligned) *(.dynbss) *(.bss) *(COMMON) } . = ALIGN(0); __bss_stop = .;
 _end = .;
 .stab 0 : { *(.stab) } .stabstr 0 : { *(.stabstr) } .stab.excl 0 : { *(.stab.excl) } .stab.exclstr 0 : { *(.stab.exclstr) } .stab.index 0 : { *(.stab.index) } .stab.indexstr 0 : { *(.stab.indexstr) } .comment 0 : { *(.comment) }
 .comment 0 : { *(.comment) }
 /* Default discards */
 /DISCARD/ : { *(.exit.text) *(.memexit.text) *(.exit.data) *(.memexit.data) *(.memexit.rodata) *(.exitcall.exit) *(.discard) *(.discard.*) }
}
/*
 * These must never be empty
 * If you have to comment these two assert statements out, your
 * binutils is too old (for other reasons as well)
 */
ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")