#define LC_SEGMENT 0x1 /* segment of this file to be mapped */ #define LC_SEGMENT_64 0x19 /* 64-bit segment of this file to be mapped */ #define LC_SYMTAB 0x2 /* link-edit stab symbol table info */ #define LC_SYMSEG 0x3 /* link-edit gdb symbol table info (obsolete) */ #define LC_THREAD 0x4 /* thread */ #define LC_UNIXTHREAD 0x5 /* unix thread (includes a stack) */ #define LC_LOADFVMLIB 0x6 /* load a specified fixed VM shared library */ #define LC_IDFVMLIB 0x7 /* fixed VM shared library identification */ #define LC_IDENT 0x8 /* object identification info (obsolete) */ #define LC_FVMFILE 0x9 /* fixed VM file inclusion (internal use) */ #define LC_PREPAGE 0xa /* prepage command (internal use) */ #define LC_DYSYMTAB 0xb /* dynamic link-edit symbol table info */ #define LC_LOAD_DYLIB 0xc /* load a dynamically linked shared library */ #define LC_ID_DYLIB 0xd /* dynamically linked shared lib ident */ #define LC_LOAD_DYLINKER 0xe /* load a dynamic linker */ #define LC_ID_DYLINKER 0xf /* dynamic linker identification */ #define LC_PREBOUND_DYLIB 0x10 /* modules prebound for a dynamically */ /* linked shared library */ #define LC_ROUTINES 0x11 /* image routines */ #define LC_SUB_FRAMEWORK 0x12 /* sub framework */ #define LC_SUB_UMBRELLA 0x13 /* sub umbrella */ #define LC_SUB_CLIENT 0x14 /* sub client */ #define LC_SUB_LIBRARY 0x15 /* sub library */ #define LC_TWOLEVEL_HINTS 0x16 /* two-level namespace lookup hints */ #define LC_PREBIND_CKSUM 0x17 /* prebind checksum */ #define LC_LOAD_WEAK_DYLIB (0x18 | LC_REQ_DYLD)
#define LC_ROUTINES_64 0x1a /* 64-bit image routines */ #define LC_UUID 0x1b /* the uuid */ #define LC_RPATH (0x1c | LC_REQ_DYLD) /* runpath additions */ #define LC_CODE_SIGNATURE 0x1d /* local of code signature */ #define LC_SEGMENT_SPLIT_INFO 0x1e /* local of info to split segments */ #define LC_REEXPORT_DYLIB (0x1f | LC_REQ_DYLD) /* load and re-export dylib */
下面是通过otool命令来输出的load commands：
otool -l IDLFundation
Load command 20 cmd LC_LOAD_DYLIB cmdsize80 name @rpath/FLAnimatedImage.framework/FLAnimatedImage (offset 24) time stamp 2 Thu Jan 108:00:021970 current version 1.0.0 compatibility version 1.0.0
-f print the fat headers -a print the archive header -h print the mach header -l print the load commands -L print shared libraries used -D print shared library id name -t print the text section (disassemble with -v) -x print all text sections (disassemble with -v) -p <routine name> start dissassemble from routine name -s <segname> <sectname> print contents of section -d print the data section -o print the Objective-C segment -r print the relocation entries -S print the table of contents of a library (obsolete) -T print the table of contents of a dynamic shared library (obsolete) -M print the module table of a dynamic shared library (obsolete) -R print the reference table of a dynamic shared library (obsolete) -I print the indirect symbol table -H print the two-level hints table (obsolete) -G print the data in code table -v print verbosely (symbolically) when possible -V print disassembled operands symbolically -c print argument strings of a core file -X printno leading addresses or headers -m don't use archive(member) syntax -B force Thumb disassembly (ARM objects only) -q use llvm's disassembler (the default) -Q use otool(1)'s disassembler -mcpu=arg use `arg' as the cpu for disassembly -j print opcode bytes -P print the info plist section as strings -C print linker optimization hints --version print the version of /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/otool
