Add support for decompilation of Mach-O files

[s3rvac]

RetDec has a basic support for decompilation of Mach-O files. However, when I try to decompile a Mach-O file via the IDA plugin (e.g. this one), the plugin fails with the following error:

Retargetable Decompiler version 0.4 cannot decompile this input file.

IDA loads the input Mach-O file just fine. It would be nice if the IDA plugin supported the same file formats as RetDec.

[Maroc-OS]

The plugin actually is a mass and need a lot of work, it works sometimes and give strange errors must of times. like decompiling a PE library says always function must be selected. am on macOS btw.

For Mach-O i started working on it and ida crash's with exception start is greater then end.

followed the problem and found that it comes from :

void ConfigGenerator::generateFunctions()
fnc->end_ea == 0 when printing it.

fixed that part (ugly hack to follow fix ups) and come to same error on function :

void ConfigGenerator::generateSegmentsAndGlobals()
seg->end_ea == 0 when printing it.

File : config_generator.cpp

[Maroc-OS]

Sorry I found that I was using normal plugin as ida pro 64 bit ☝️.

Support for ARM is there already. Should I send a patch? I saw my pull requests even not reviewed or commented.