Commit Graph

362 Commits

Author SHA1 Message Date
Daniel Dunbar 582d61026d llvm-mc/Mach-O: Preliminary support for indirect symbols.
- The indirect table itself isn't being filled in yet.

 - This isn't factored properly and is rather FIXMEd, but at the moment I'm more
   focused on figuring out what it needs to do.

llvm-svn: 79910
2009-08-24 11:56:58 +00:00
Daniel Dunbar 04a1158d13 llvm-mc/Mach-O: Support symbol attributes.
- This is mostly complete, the main thing missing is .indirect_symbol support
   (which would be straight-forward, except that the way it is implemented in
   'as' makes getting an exact .o match interesting).

llvm-svn: 79899
2009-08-24 08:40:12 +00:00
Daniel Dunbar d341e781da llvm-mc: Tweak undefined symbol handling.
llvm-svn: 79898
2009-08-24 08:39:57 +00:00
Chris Lattner 06fa176862 prune the #includes in raw_ostream.h by moving a
member out of line. ftostr is not particularly speedy,
so that method is presumably not perf sensitive.

llvm-svn: 79885
2009-08-24 03:52:50 +00:00
Chris Lattner 8f816e7d68 tweak #includes
llvm-svn: 79744
2009-08-22 19:19:12 +00:00
Daniel Dunbar d1859474a7 llvm-mc/Mach-O: Improve symbol table support:
- Honor .globl.

 - Set symbol type and section correctly ('nm' now works), and order symbols
   appropriately.

 - Take care to the string table so that the .o matches 'as' exactly (for ease
   of testing).

llvm-svn: 79740
2009-08-22 11:41:10 +00:00
Daniel Dunbar ff3eafd39d llvm-mc/Mach-O: Sketch symbol table support.
- The only .s syntax this honors right now is emitting labels, and some parts
   of the symbol table generation are wrong or faked.

 - This is enough to get nm to report such symbols... incorrectly, but still.

Also, fixed byte emission to extend the previous fragment if possible.

llvm-svn: 79739
2009-08-22 10:13:24 +00:00
Daniel Dunbar 38728fe481 llvm-mc/Mach-O: Move more logic for writing the Mach-O file into the writer
class, and kill off MCSectionData::FileOffset.

llvm-svn: 79735
2009-08-22 08:28:27 +00:00
Daniel Dunbar fef19ffe3a llvm-mc: Rename / redefine MCFragment::FileOffset to MCFragment::Offset (the
section offset).

llvm-svn: 79734
2009-08-22 08:27:54 +00:00
Daniel Dunbar b1068e4fe3 llvm-mc/Mach-O: Support .o emission for .org and .align.
llvm-svn: 79684
2009-08-21 23:07:38 +00:00
Daniel Dunbar 4ef7fb9530 llvm-mc/Mach-O: Support byte and fill value emission.
llvm-svn: 79652
2009-08-21 18:29:01 +00:00
Daniel Dunbar 3016db39dd llvm-mc: Start MCAssembler and MCMachOStreamer.
- Together these form the (Mach-O) back end of the assembler.

 - MCAssembler is the actual assembler backend, which is designed to have a
   reasonable API. This will eventually grow to support multiple object file
   implementations, but for now its Mach-O/i386 only.

 - MCMachOStreamer adapts the MCStreamer "actions" API to the MCAssembler API,
   e.g. converting the various directives into fragments, managing state like
   the current section, and so on.

 - llvm-mc will use the new backend via '-filetype=obj', which may eventually
   be, but is not yet, since I hear that people like assemblers which actually
   assemble.

 - The only thing that works at the moment is changing sections. For the time
   being I have a Python Mach-O dumping tool in test/scripts so this stuff can
   be easily tested, eventually I expect to replace this with a real LLVM tool.

 - More doxyments to come.

I assume that since this stuff doesn't touch any of the things which are part of
2.6 that it is ok to put this in not so long before the freeze, but if someone
objects let me know, I can pull it.

llvm-svn: 79612
2009-08-21 09:11:24 +00:00