LXR linux/arch/mips/kernel/vmlinux.lds.S

   1#include <asm/asm-offsets.h>
   2#include <asm/thread_info.h>
   3
   4#define PAGE_SIZE _PAGE_SIZE
   5
   6/*
   7 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
   8 * ensure that it has .bss alignment (64K).
   9 */
  10#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
  11
  12#include <asm-generic/vmlinux.lds.h>
  13
  14#undef mips
  15#define mips mips
  16OUTPUT_ARCH(mips)
  17ENTRY(kernel_entry)
  18PHDRS {
  19        text PT_LOAD FLAGS(7);  /* RWX */
  20        note PT_NOTE FLAGS(4);  /* R__ */
  21}
  22
  23#ifdef CONFIG_32BIT
  24        #ifdef CONFIG_CPU_LITTLE_ENDIAN
  25                jiffies  = jiffies_64;
  26        #else
  27                jiffies  = jiffies_64 + 4;
  28        #endif
  29#else
  30        jiffies  = jiffies_64;
  31#endif
  32
  33SECTIONS
  34{
  35#ifdef CONFIG_BOOT_ELF64
  36        /* Read-only sections, merged into text segment: */
  37        /* . = 0xc000000000000000; */
  38
  39        /* This is the value for an Origin kernel, taken from an IRIX kernel.  */
  40        /* . = 0xc00000000001c000; */
  41
  42        /* Set the vaddr for the text segment to a value
  43         *   >= 0xa800 0000 0001 9000 if no symmon is going to configured
  44         *   >= 0xa800 0000 0030 0000 otherwise
  45         */
  46
  47        /* . = 0xa800000000300000; */
  48        . = 0xffffffff80300000;
  49#endif
  50        . = VMLINUX_LOAD_ADDRESS;
  51        /* read-only */
  52        _text = .;      /* Text and read-only data */
  53        .text : {
  54                TEXT_TEXT
  55                SCHED_TEXT
  56                LOCK_TEXT
  57                KPROBES_TEXT
  58                IRQENTRY_TEXT
  59                *(.text.*)
  60                *(.fixup)
  61                *(.gnu.warning)
  62        } :text = 0
  63        _etext = .;     /* End of text section */
  64
  65        EXCEPTION_TABLE(16)
  66
  67        /* Exception table for data bus errors */
  68        __dbe_table : {
  69                __start___dbe_table = .;
  70                *(__dbe_table)
  71                __stop___dbe_table = .;
  72        }
  73
  74        NOTES :text :note
  75        .dummy : { *(.dummy) } :text
  76
  77        _sdata = .;                     /* Start of data section */
  78        RODATA
  79
  80        /* writeable */
  81        .data : {       /* Data */
  82                . = . + DATAOFFSET;             /* for CONFIG_MAPPED_KERNEL */
  83
  84                INIT_TASK_DATA(THREAD_SIZE)
  85                NOSAVE_DATA
  86                CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
  87                READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
  88                DATA_DATA
  89                CONSTRUCTORS
  90        }
  91        _gp = . + 0x8000;
  92        .lit8 : {
  93                *(.lit8)
  94        }
  95        .lit4 : {
  96                *(.lit4)
  97        }
  98        /* We want the small data sections together, so single-instruction offsets
  99           can access them all, and initialized data all before uninitialized, so
 100           we can shorten the on-disk segment size.  */
 101        .sdata : {
 102                *(.sdata)
 103        }
 104        _edata =  .;                    /* End of data section */
 105
 106        /* will be freed after init */
 107        . = ALIGN(PAGE_SIZE);           /* Init code and data */
 108        __init_begin = .;
 109        INIT_TEXT_SECTION(PAGE_SIZE)
 110        INIT_DATA_SECTION(16)
 111
 112        . = ALIGN(4);
 113        .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
 114                __mips_machines_start = .;
 115                *(.mips.machines.init)
 116                __mips_machines_end = .;
 117        }
 118
 119        /* .exit.text is discarded at runtime, not link time, to deal with
 120         * references from .rodata
 121         */
 122        .exit.text : {
 123                EXIT_TEXT
 124        }
 125        .exit.data : {
 126                EXIT_DATA
 127        }
 128
 129        PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
 130        /*
 131         * Align to 64K in attempt to eliminate holes before the
 132         * .bss..swapper_pg_dir section at the start of .bss.  This
 133         * also satisfies PAGE_SIZE alignment as the largest page size
 134         * allowed is 64K.
 135         */
 136        . = ALIGN(0x10000);
 137        __init_end = .;
 138        /* freed after init ends here */
 139
 140        /*
 141         * Force .bss to 64K alignment so that .bss..swapper_pg_dir
 142         * gets that alignment.  .sbss should be empty, so there will be
 143         * no holes after __init_end. */
 144        BSS_SECTION(0, 0x10000, 0)
 145
 146        _end = . ;
 147
 148        /* These mark the ABI of the kernel for debuggers.  */
 149        .mdebug.abi32 : {
 150                KEEP(*(.mdebug.abi32))
 151        }
 152        .mdebug.abi64 : {
 153                KEEP(*(.mdebug.abi64))
 154        }
 155
 156        /* This is the MIPS specific mdebug section.  */
 157        .mdebug : {
 158                *(.mdebug)
 159        }
 160
 161        STABS_DEBUG
 162        DWARF_DEBUG
 163
 164        /* These must appear regardless of  .  */
 165        .gptab.sdata : {
 166                *(.gptab.data)
 167                *(.gptab.sdata)
 168        }
 169        .gptab.sbss : {
 170                *(.gptab.bss)
 171                *(.gptab.sbss)
 172        }
 173
 174        /* Sections to be discarded */
 175        DISCARDS
 176        /DISCARD/ : {
 177                /* ABI crap starts here */
 178                *(.MIPS.options)
 179                *(.options)
 180                *(.pdr)
 181                *(.reginfo)
 182        }
 183}
 184