Mach-O结构图

概览

普通单架构 vs FAT多架构

• 普通：单架构 = Mach-O文件
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• 特殊：多架构=FAT=Universal通用文件
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  • 文字版

    +---------------------+        /* header (fat_header: 0x8) */
    |                     |
    |     FAT HEADER      |
    |                     |
    +---------------------+        /* archs (fat_arch: 0x14) */
    |     FAT ARCH #1     |
    +---------------------+
    |     FAT ARCH #2     |
    +---------------------+
    |         ...         |        /* other eventual fat archs... */
    +---------------------+        /* Mach-Os section (variable size) */
    |                     |
    |                     |
    |                     |
    |                     |
    |      MACH-O #1      |
    |                     |
    |                     |
    |                     |
    |                     |
    |                     |
    +---------------------+
    |                     |
    |                     |
    |                     |
    |                     |
    |                     |
    |      MACH-O #2      |
    |                     |
    |                     |
    |                     |
    |                     |
    +---------------------+
    |         ...         |        /* other eventual Mach-Os... */
    +---------------------+
    

详解

• 带字段的Mach-O结构图
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