The unlinker's new ISLANDGUESS HIDE' option removes autogenerated BSR.L
from the binary dumps and makes tweaks that will cause them to be
regenerated by the linker. MPW's linker seems to have the correct branch
island placement policy, because round-tripping is preserved. When
building from edited sources, there is a remote possibility that the
arrangement of branch islands inside a dumped file will be changed,
disrupting references within that file.
The unlink tool now REFGUESSes branches between object files, with some
manual guidance. If you patch the ROM enough to change its function
offsets, it should still work fine.
(One potential exception: if the linker needs to put a new "BSR.L"
island module *within* a pre-built object file, that module file's
internal references *may* be disrupted. This situation is fairly
unlikely, but with improved reversal it will be addressed.)
"DeVectorize" was a hideous several-thousand-line Python script that
split 70% of the ROM into barely passable MPW object files. The new
unlinker, "unlink", produces much nicer files and enjoys a clean
separation of code from data. Using DumpObj, you can get a very readable
listing of a given object file (GoNativeROMLib.o has improved a great
deal). With a bit more work, unlink will be superior to FDisasm for all
68k Mac ROM reversal.
Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included.
The Tools directory, containing mostly junk, is also excluded.
Elliot Nunn