git.saurik.com Git - apple/ld64.git/blob

1 .Dd November 10, 2010

2 .Dt dyldinfo 1

3 .Os Darwin

4 .Sh NAME

5 .Nm dyldinfo

6 .Nd "Displays information used by dyld in an executable"

7 .Sh SYNOPSIS

8 .Nm

9 .Op Fl arch Ar arch-name

10 .Op Fl dylibs

11 .Op Fl rebase

12 .Op Fl bind

13 .Op Fl weak_bind

14 .Op Fl lazy_bind

15 .Op Fl export

16 .Op Fl opcodes

17 .Op Fl function_starts

18 .Ar file(s)

19 .Sh DESCRIPTION

20 Executables built for Mac OS X 10.6 and later have a new format for the

21 information in the __LINKEDIT segment. The dyldinfo tool will display

22 that information.

23 .Pp

24 The options are as follows:

25 .Bl -tag -width indent

26 .It Fl arch Ar arch

27 Only display the specified architecture. Other architectures in a universal image are ignored.

28 .It Fl dylibs

29 Display the table of dylibs on which this image depends.

30 .It Fl rebase

31 Display the table of rebasing information. Rebasing is what dyld does when an image is

32 not loaded at its preferred address. Typically, this involves updating pointers in the __DATA

33 segment which point within the image.

34 .It Fl bind

35 Display the table of binding information. These are the symbolic fix ups that dyld must

36 do when an image is loaded.

37 .It Fl weak_bind

38 Display the table of weak binding information. Typically, only C++ progams will have any

39 weak binding. These are symbols which dyld must unique accross all images.

40 .It Fl lazy_bind

41 Display the table of lazy binding information. These are symbols which dyld delays binding

42 until they are first used. Lazy binding is automatically used for all function calls to

43 functions in some external dylib.

44 .It Fl export

45 Display the table symbols which this image exports.

46 .It Fl opcodes

47 Display the low level opcodes used to encode all rebase and binding information.

48 .It Fl function_starts

49 Decodes the list of function start addresses.

50 .El

51 .Sh SEE ALSO

52 .Xr otool 1

53 .Xr nm 1