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[RFC] Darwin port (Part 0)


here are a patch to add a new host/target: Darwin (or MacOS X).

Only a minimal set of features has been implemented: x86 and x86_64 only (not ppc),
no support for core files, no support for fat files, no support for dynamic libraries,
no support for stabs (dwarf only).

The mach-o reader can handle dsym files and in object files dwarf - but both need to be improved.

Even all these restrictions I think the port is in good shape enough to be merged. I have made
the minimal changes to common files in order to ease the merge. Some planned changes (particularly
in the mach-o reader) will require modification to some common files and I'd prefer a first merge

Two majors components (machoread.c and macosx-nat.c) have been rewritten from scratch but other
files (mainly i386-macosx-*.?) comes from Apple own branch of gdb. As the Apple branch have never
been formally submitted the copyright status is not clear: I don't know if we can assume they have
been assigned to the FSF. We have tried to contact Apple - but without success. I am ready to rewrite
them in case of issue.

Also, this is my first contribution to gdb. Comments will be very useful to me but please don't be
too harsh :-)


2008-11-10  Tristan Gingold  <>

	* Add Darwin host.
	* configure.tgt: Add Darwin target.
	* defs.h (enum gdb_osabi): Add GDB_OSABI_DARWIN and
	* osabi.c (gdb_osabi_names): Add names for darwin abis.
	* i386-macosx-nat.c: New file.
	* i386-macosx-tdep.c: New file.
	* i386-macosx-tdep.h: New file.
	* machoread.c: New file.
	* macosx-nat-info.c: New file.
	* macosx-nat.c: New file.
	* macosx-nat.h: New file.
	* macosx.defs: New file.
	* config/nm-macosx.h: New file.
	* config/i386/ New file.
	* config/i386/nm-i386-macosx.h: New file.

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