Normalize global variables exported by vmlinux.lds to conform usage guidelines from include/asm-generic/sections.h. 1) Use _text to mark the start of the kernel image including the head text, and _stext to mark the start of the .text section. 2) Export mandatory global variables __bss_stop. 3) Adjust __init_begin and __init_end to avoid acrossing .text and .data sections. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
		
			
				
	
	
		
			168 lines
		
	
	
	
		
			5.1 KiB
			
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			168 lines
		
	
	
	
		
			5.1 KiB
			
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
#include <asm-generic/vmlinux.lds.h>
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#include <asm/page.h>
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OUTPUT_FORMAT(ELF_FORMAT)
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OUTPUT_ARCH(ELF_ARCH)
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ENTRY(_start)
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jiffies = jiffies_64;
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SECTIONS
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{
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  PROVIDE (__executable_start = START);
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  . = START + SIZEOF_HEADERS;
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  .interp         : { *(.interp) }
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  __binary_start = .;
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  . = ALIGN(4096);		/* Init code and data */
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  _text = .;
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  INIT_TEXT_SECTION(PAGE_SIZE)
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  . = ALIGN(PAGE_SIZE);
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  /* Read-only sections, merged into text segment: */
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  .hash           : { *(.hash) }
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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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  .rel.init       : { *(.rel.init) }
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  .rela.init      : { *(.rela.init) }
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  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
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  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
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  .rel.fini       : { *(.rel.fini) }
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  .rela.fini      : { *(.rela.fini) }
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  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
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  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
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  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
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  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
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  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
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  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
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  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
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  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
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  .rel.ctors      : { *(.rel.ctors) }
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  .rela.ctors     : { *(.rela.ctors) }
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  .rel.dtors      : { *(.rel.dtors) }
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  .rela.dtors     : { *(.rela.dtors) }
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  .rel.got        : { *(.rel.got) }
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  .rela.got       : { *(.rela.got) }
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  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
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  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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  .rel.plt : {
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	*(.rel.plt)
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	PROVIDE_HIDDEN(__rel_iplt_start = .);
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	*(.rel.iplt)
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	PROVIDE_HIDDEN(__rel_iplt_end = .);
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  }
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  .rela.plt : {
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	*(.rela.plt)
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	PROVIDE_HIDDEN(__rela_iplt_start = .);
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	*(.rela.iplt)
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	PROVIDE_HIDDEN(__rela_iplt_end = .);
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  }
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  .init           : {
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    KEEP (*(.init))
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  } =0x90909090
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  .plt            : { *(.plt) }
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  .text           : {
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    _stext = .;
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    TEXT_TEXT
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    SCHED_TEXT
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    LOCK_TEXT
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    *(.fixup)
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    *(.stub .text.* .gnu.linkonce.t.*)
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    /* .gnu.warning sections are handled specially by elf32.em.  */
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    *(.gnu.warning)
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    . = ALIGN(PAGE_SIZE);
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  } =0x90909090
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  . = ALIGN(PAGE_SIZE);
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  .syscall_stub : {
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	__syscall_stub_start = .;
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	*(.__syscall_stub*)
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	__syscall_stub_end = .;
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  }
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  .fini           : {
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    KEEP (*(.fini))
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  } =0x90909090
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  .kstrtab : { *(.kstrtab) }
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  #include <asm/common.lds.S>
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  __init_begin = .;
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  init.data : { INIT_DATA }
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  __init_end = .;
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  /* Ensure the __preinit_array_start label is properly aligned.  We
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     could instead move the label definition inside the section, but
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     the linker would then create the section even if it turns out to
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     be empty, which isn't pretty.  */
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  . = ALIGN(32 / 8);
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  .preinit_array     : { *(.preinit_array) }
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  .init_array     : { *(.init_array) }
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  .fini_array     : { *(.fini_array) }
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  .data           : {
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    INIT_TASK_DATA(KERNEL_STACK_SIZE)
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    . = ALIGN(KERNEL_STACK_SIZE);
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    *(.data..init_irqstack)
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    DATA_DATA
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    *(.data.* .gnu.linkonce.d.*)
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    SORT(CONSTRUCTORS)
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  }
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  .data1          : { *(.data1) }
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  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
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  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
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  .eh_frame       : { KEEP (*(.eh_frame)) }
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  .gcc_except_table   : { *(.gcc_except_table) }
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  .dynamic        : { *(.dynamic) }
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  .ctors          : {
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    /* gcc uses crtbegin.o to find the start of
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       the constructors, so we make sure it is
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       first.  Because this is a wildcard, it
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       doesn't matter if the user does not
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       actually link against crtbegin.o; the
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       linker won't look for a file to match a
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       wildcard.  The wildcard also means that it
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       doesn't matter which directory crtbegin.o
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       is in.  */
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    KEEP (*crtbegin.o(.ctors))
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    /* We don't want to include the .ctor section from
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       from the crtend.o file until after the sorted ctors.
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       The .ctor section from the crtend file contains the
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       end of ctors marker and it must be last */
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    KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
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    KEEP (*(SORT(.ctors.*)))
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    KEEP (*(.ctors))
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  }
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  .dtors          : {
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    KEEP (*crtbegin.o(.dtors))
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    KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
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    KEEP (*(SORT(.dtors.*)))
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    KEEP (*(.dtors))
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  }
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  .jcr            : { KEEP (*(.jcr)) }
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  .got            : { *(.got.plt) *(.got) }
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  _edata = .;
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  PROVIDE (edata = .);
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  .bss            : {
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   __bss_start = .;
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   *(.dynbss)
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   *(.bss .bss.* .gnu.linkonce.b.*)
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   *(COMMON)
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   /* Align here to ensure that the .bss section occupies space up to
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      _end.  Align after .bss to ensure correct alignment even if the
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      .bss section disappears because there are no input sections.  */
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   . = ALIGN(32 / 8);
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  . = ALIGN(32 / 8);
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  }
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   __bss_stop = .;
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  _end = .;
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  PROVIDE (end = .);
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  STABS_DEBUG
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  DWARF_DEBUG
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  DISCARDS
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}
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