Difference between revisions of "Mach-O"
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[http://developer.apple.com/documentation/Darwin/Reference/ManPages/man1/nm.1.html nm] - display name list (symbol table) | [http://developer.apple.com/documentation/Darwin/Reference/ManPages/man1/nm.1.html nm] - display name list (symbol table) | ||
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| + | == Objective-C segment == | ||
| + | |||
| + | There're no documentation found over __OBJC segment and its sections. The following information has been gathered from cctools [http://opensource.apple.com/source/cctools/cctools-667.3/ sources] | ||
| + | |||
| + | == Sections == | ||
| + | |||
| + | === __image_info === | ||
| + | |||
| + | content image info information (8 bytes): | ||
| + | |||
| + | imageInfo = packed record | ||
| + | version : uint32_t; | ||
| + | flags : uint32_t; | ||
| + | end; | ||
Revision as of 01:10, 28 August 2009
from Wikipedia:
Mach-O, short for Mach object file format, is a file format for executables, object code, shared libraries, dynamically-loaded code, and core dumps. A derivation of the a.out format, Mach-O offered more extensibility and faster access to information in the symbol table.
File Format Reference can be found here
Following tools are used in Mac OS X to view Mach-O files:
otool - object file displaying tool
nm - display name list (symbol table)
Objective-C segment
There're no documentation found over __OBJC segment and its sections. The following information has been gathered from cctools sources
Sections
__image_info
content image info information (8 bytes):
imageInfo = packed record version : uint32_t; flags : uint32_t; end;
