ELF段的查看

使用命令readelf -l /usr/bin/chmod，结果：

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Elf file type is DYN (Position-Independent Executable file) Entry point 0x41e0 There are 13 program headers, starting at offset 64   Program Headers: Type           Offset             VirtAddr           PhysAddr FileSiz            MemSiz              Flags  Align PHDR           0x0000000000000040 0x0000000000000040 0x0000000000000040 0x00000000000002d8 0x00000000000002d8  R      0x8 INTERP         0x0000000000000318 0x0000000000000318 0x0000000000000318 0x000000000000001c 0x000000000000001c  R      0x1 [Requesting program interpreter: /lib64/ld-linux-x86-64.so.2] LOAD           0x0000000000000000 0x0000000000000000 0x0000000000000000 0x0000000000001728 0x0000000000001728  R      0x1000 LOAD           0x0000000000002000 0x0000000000002000 0x0000000000002000 0x0000000000007aa6 0x0000000000007aa6  R E    0x1000 LOAD           0x000000000000a000 0x000000000000a000 0x000000000000a000 0x0000000000001fc8 0x0000000000001fc8  R      0x1000 LOAD           0x000000000000ca60 0x000000000000da60 0x000000000000da60 0x0000000000000638 0x00000000000007a0  RW     0x1000 DYNAMIC        0x000000000000cbe0 0x000000000000dbe0 0x000000000000dbe0 0x00000000000001b0 0x00000000000001b0  RW     0x8 NOTE           0x0000000000000338 0x0000000000000338 0x0000000000000338 0x0000000000000030 0x0000000000000030  R      0x8 NOTE           0x0000000000000368 0x0000000000000368 0x0000000000000368 0x0000000000000044 0x0000000000000044  R      0x4 GNU_PROPERTY   0x0000000000000338 0x0000000000000338 0x0000000000000338 0x0000000000000030 0x0000000000000030  R      0x8 GNU_EH_FRAME   0x000000000000b1a0 0x000000000000b1a0 0x000000000000b1a0 0x0000000000000204 0x0000000000000204  R      0x4 GNU_STACK      0x0000000000000000 0x0000000000000000 0x0000000000000000 0x0000000000000000 0x0000000000000000  RW     0x10 GNU_RELRO      0x000000000000ca60 0x000000000000da60 0x000000000000da60 0x00000000000005a0 0x00000000000005a0  R      0x1   Section to Segment mapping: Segment Sections... 00 01     .interp 02     .interp .note.gnu.property .note.gnu.build-id .note.ABI-tag .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt 03     .init .plt .plt.got .plt.sec .text .fini 04     .rodata .eh_frame_hdr .eh_frame 05     .ctors .dtors .data.rel.ro .dynamic .got .data .bss 06     .dynamic 07     .note.gnu.property 08     .note.gnu.build-id .note.ABI-tag 09     .note.gnu.property 10     .eh_frame_hdr 11

　　这是个可执行文件的programe head