LC_SEGMENT_64

• LC_SEGMENT_64
  • 数据结构定义：segment_command_64
    • 含义：Defines a 64-bit segment of this file to be mapped into the address space of the process that loads this file. It also includes all the sections contained by the segment.

segment_command_64定义

/*
 * The 64-bit segment load command indicates that a part of this file is to be
 * mapped into a 64-bit task's address space.  If the 64-bit segment has
 * sections then section_64 structures directly follow the 64-bit segment
 * command and their size is reflected in cmdsize.
 */
struct segment_command_64 { /* for 64-bit architectures */
    uint32_t    cmd;        /* LC_SEGMENT_64 */
    uint32_t    cmdsize;    /* includes sizeof section_64 structs */
    char        segname[16];    /* segment name */
    uint64_t    vmaddr;        /* memory address of this segment */
    uint64_t    vmsize;        /* memory size of this segment */
    uint64_t    fileoff;    /* file offset of this segment */
    uint64_t    filesize;    /* amount to map from the file */
    vm_prot_t    maxprot;    /* maximum VM protection */
    vm_prot_t    initprot;    /* initial VM protection */
    uint32_t    nsects;        /* number of sections in segment */
    uint32_t    flags;        /* flags */
};