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Viewing changes to kernel/arch/amd64/_link.ld.in

  • Committer: Martin Decky
  • Date: 2009-08-04 11:19:19 UTC
  • Revision ID: martin@uranus.dsrg.hide.ms.mff.cuni.cz-20090804111919-evyclddlr3v5lhmp
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kernel/arch/amd64/_link.ld.in
 
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/** AMD64 linker script
 
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 *  
 
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 * umapped section:
 
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 *      kernel text
 
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 *      kernel data
 
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 * mapped section:
 
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 *      kernel text
 
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 *      kernel data 
 
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 */
 
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#include <arch/boot/boot.h>
 
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#include <arch/mm/page.h>
 
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SECTIONS {
 
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        .unmapped BOOT_OFFSET: AT (0) {
 
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                unmapped_ktext_start = .;
 
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                *(K_TEXT_START);
 
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                unmapped_ktext_end = .;
 
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                unmapped_kdata_start = .;
 
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                *(K_DATA_START);
 
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                *(K_INI_PTLS);
 
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                unmapped_kdata_end = .;
 
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        }
 
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        .mapped (PA2KA(BOOT_OFFSET)+SIZEOF(.unmapped)) : AT (SIZEOF(.unmapped)) {
 
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                ktext_start = .;
 
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                *(.text);
 
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                ktext_end = .;
 
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                kdata_start = .;
 
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                *(.data);               /* initialized data */
 
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                *(.rodata*);            /* string literals */
 
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                hardcoded_load_address = .;
 
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                QUAD(PA2KA(BOOT_OFFSET));
 
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                hardcoded_ktext_size = .;
 
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                QUAD(ktext_end - ktext_start + (unmapped_ktext_end - unmapped_ktext_start));
 
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                hardcoded_kdata_size = .;
 
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                QUAD(kdata_end - kdata_start + (unmapped_kdata_end - unmapped_kdata_start));
 
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                hardcoded_unmapped_ktext_size = .;
 
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                QUAD(unmapped_ktext_end - unmapped_ktext_start);
 
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                hardcoded_unmapped_kdata_size = .;
 
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                QUAD(unmapped_kdata_end - unmapped_kdata_start);
 
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                *(COMMON);              /* global variables */
 
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                symbol_table = .;
 
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                *(symtab.*);            /* Symbol table, must be LAST symbol!*/
 
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                *(.bss);                /* uninitialized static variables */
 
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                kdata_end = .;
 
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        }
 
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        /DISCARD/ : {
 
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                *(*);
 
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        }
 
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#ifdef CONFIG_SMP       
 
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        _hardcoded_unmapped_size = (unmapped_ktext_end - unmapped_ktext_start) + (unmapped_kdata_end - unmapped_kdata_start);
 
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        ap_boot = unmapped_ap_boot - BOOT_OFFSET + AP_BOOT_OFFSET;
 
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        ap_gdtr = unmapped_ap_gdtr - BOOT_OFFSET + AP_BOOT_OFFSET;
 
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        protected_ap_gdtr = PA2KA(ap_gdtr);
 
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#endif /* CONFIG_SMP */
 
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}