Commit Graph

62 Commits

Author SHA1 Message Date
Daniel Dunbar
3f6a960f9c llvm-mc/Mach-O: Add support for relocations.
- I haven't really tried to find the "right" way to store the fixups or apply
   them, yet. This works, but isn't particularly elegant or fast.

 - Still no evaluation support, so we don't actually ever not turn a fixup into
   a relocation entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 13:58:10 +00:00
Daniel Dunbar
573e53627e llvm-mc: Fix tests for python variations in int printing, sigh.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80069 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 04:28:45 +00:00
Daniel Dunbar
6742e34385 llvm-mc/Mach-O: Add section padding where needed (to align the next section).
Also, simplify some of Mach-O writer code which can now use section addresses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80067 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 04:13:32 +00:00
Daniel Dunbar
5e835967dd llvm-mc/Mach-O: Set addresses for symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80065 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 02:48:04 +00:00
Daniel Dunbar
ad7c3d5593 llvm-mc: Improve indirect symbol support (add the indirect index table).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80059 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 00:18:21 +00:00
Daniel Dunbar
6aff2fbd56 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).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79899 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-24 08:40:12 +00:00
Daniel Dunbar
3edd9bb7a3 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).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79740 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-22 11:41:10 +00:00
Daniel Dunbar
605187e596 Force triple for these tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-22 09:45:43 +00:00
Daniel Dunbar
2330df6b66 llvm-mc: Improve handling of implicit alignment for magic section directives
(e.g., .objc_message_refs).
 - Just emit a .align when we see the directive; this isn't exactly what 'as'
   does but in practice it should be ok, at least for now. See FIXME.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79697 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 23:30:15 +00:00
Daniel Dunbar
d6f761e0eb llvm-mc/Mach-O: Support .o emission for .org and .align.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79684 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 23:07:38 +00:00
Daniel Dunbar
0705fbf52f llvm-mc/Mach-O: Support byte and fill value emission.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79652 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 18:29:01 +00:00
Daniel Dunbar
fb4a6b3976 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79612 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 09:11:24 +00:00