source: mainline/arch/amd64/_link.ld.in@ ff4c4f5

/** AMD64 linker script
 *  
 * umapped section:
 *      kernel text
 *      kernel data
 * mapped section:
 *      kernel text
 *      kernel data 
 */

#define __ASM__
#include <arch/boot/boot.h>
#include <arch/mm/page.h>

OUTPUT_FORMAT(binary)
ENTRY(kernel_image_start)

SECTIONS {
        .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) {
                unmapped_ktext_start = .;
                *(K_TEXT_START);
                *(K_TEXT_START_2);
                unmapped_ktext_end = .;

                unmapped_kdata_start = .;
                *(K_DATA_START);
                unmapped_kdata_end = .;
        }

        .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)) : AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) {
                ktext_start = .;
                *(BOOT_DATA);
                *(.text);
                ktext_end = .;

                kdata_start = .;
                *(.data);               /* initialized data */
                *(.rodata*);            /* string literals */
                hardcoded_load_address = .;
                QUAD(ktext_start - SIZEOF(.unmapped));
                hardcoded_ktext_size = .;
                QUAD(ktext_end - ktext_start + (unmapped_ktext_end - unmapped_ktext_start));
                hardcoded_kdata_size = .;
                QUAD(kdata_end - kdata_start + (unmapped_kdata_end - unmapped_kdata_start));
                hardcoded_unmapped_ktext_size = .;
                LONG(unmapped_ktext_end - unmapped_ktext_start);
                hardcoded_unmapped_kdata_size = .;
                LONG(unmapped_kdata_end - unmapped_kdata_start);
                *(COMMON);              /* global variables */



                *(.eh_frame);
                *(.bss);                /* uninitialized static variables */
                *(K_DATA_END);

                symbol_table = .;
                *(symtab.*);            /* Symbol table, must be LAST symbol!*/

                kdata_end = .;
        }

        _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start);
        _boot_offset = 0x100000;
        _ka2pa_offset = 0xffffffff80000000;
        _map_address = _ka2pa_offset + _boot_offset;


        e820table_boot = KA2PA(e820table) - BOOT_OFFSET;
        e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET;
        real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot);
}