1. ó ì?Ø
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Gdutor@gmail.com
TAIR
2012.02.05

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1 ƒ'¯K
2 8I©‡
3 ó L§
4 §S¥
5 ¢S¯K
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3. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ó 쉟o NX( §S´N )¤
I‡'% ¯K
¹ ó 쉟o
¹ NX(
¹ §S´N )¤
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4. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ó 쉟o NX( §S´N )¤
ó 쉟o
¹ ¬z
¹ ÎÒ+n//Œ”½
¹ •;ÙÛ
¹ -½
¹ §S¥
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5. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ó 쉟o NX( §S´N )¤
NX(
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¹ •-‚ª
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6. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ó 쉟o NX( §S´N )¤
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¹ ó
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¸ ·!Ä ¥
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7. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
8I©‡
¹ •¹= &E
¹ ~„‚ªIO
¹ a.out/ELF‚ª©Û
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8. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
•¹= &E
¹ ©‡Þ
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¸ §S•
¹ 8I“è
¸ •-
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¹ -½ &E
¹ ÎÒ
¹ NÁ&E
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9. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
~„‚ªIO
¹ COFF, Common Object File Format
¹ COM!PE, Portable Executable
¹ a.out
¹ ELF, Executable Linkable Format
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10. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
©‡ÞÜ
¹ Žê!©‡a.
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¹ •/Œ
¹ §SÞ ˜!Œ !‡ê
¹ «ãÞ ˜!Œ !‡ê
Section vs. Segment
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Segment§ãµÔn §¡•1ì
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11. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
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¹ «ã¶¡!a.
¹ «ãIP
¹ «ãŒ !3©‡¥ £þ
¹ L‘Œ
¹ §SÞ ˜!Œ !‡ê
¹ éàâÝ
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12. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
«ãa.
¹ PROGBITS: .text, .data, .rodata
¹ NOBITS: .bss
¹ SYSTAB, DYNSYM: .symtab, .dynsym
¹ STRTAB: .strtab
¹ REL: .rel.txt, .rel.data, .rel.rodata
¹ DYNAMIC, HASH: .dynamic, .hash
¹ AÏ«ã: .got, .plt, .init, .fini, .interp, .line
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13. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K •¹ &E ~„‚ª ELF©Û
-½ ‘!ÎÒL
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¸ ÎÒŠ: ƒé/ýé/Œ
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14. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ˜m© ÎÒ)Û -½
ó L§
¹ üH×£
¹ ˜m©
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¹ Ú^§S¥ž
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15. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ˜m© ÎÒ)Û -½
˜m©
¹ ãÚ/Œ˜m
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¹ •¡éà
¹ “èžØ
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16. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ˜m© ÎÒ)Û -½
ÎÒ)Û
¹ ó ìÎÒL
¸ hashL
¸ õ«ÎÒL
¹ ¬L
¸ ^r ¬
¸ ¥ ¬
¹ AÏÎÒ
¸ .etext, .edata, .end
¸ fÎÒ
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17. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K ˜m© ÎÒ)Û -½
-½
¹ -½ a.
¸ M‡/^‡-½
¸ •-/êâ-½
¹ -½ žÅ
¸ ó ž-½
¸ 1ž-½
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18. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K · ¥/Ä ¥ Ä ó
§S¥
¹ •Ÿo¦^§S¥
¸ “èE^
¸ !Ž˜m
¹ ¥ «a
¸ · ¥
¸ Ä ¥
¸ •¥
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19. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K · ¥/Ä ¥ Ä ó
· ¥/Ä ¥
¹ ó •ª
¹ ©‡‚ª
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20. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K · ¥/Ä ¥ Ä ó
Ä ó n
¹ ˜Ã'“è: PIC
¹ Û £þL: GOT
¹ L§ó L: PLT
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21. ƒ'¯K 8I©‡ ó L§ §S¥ ¢S¯K
ó ìƒ' ˜ ¢S¯K
¹ ¥ |¢´»
¹ ¥ ‡ Ò
¹ Óž¦^Ä/· ó
¹ CX¥¥ ÎÒ
¹ ~^óä
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22. √
Thanks !
♥