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196 Commits

Author SHA1 Message Date
Daniel Dunbar
d8036fb0de MC: Switch to using MCInst fragments to do relaxation. 
Also, both MCMachOStreamer and MCAssembler are now target independent!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99256 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 05:09:03 +00:00
Daniel Dunbar
337055e62f MC: Add TargetAsmBackend::MayNeedRelaxation, for checking whether a particular instruction + fixups might need relaxation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99249 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 03:13:05 +00:00
Daniel Dunbar
8f9b80e5df MC: Add TargetAsmBackend::WriteNopData and use to eliminate some target dependencies in MCMachOStreamer and MCAssembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99248 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 02:36:58 +00:00
Daniel Dunbar
9799de910e MC: Tweak MCInstFragment to include the encoded data and fixups, so that we don't need to recompute them during relaxation. I will revisit this once all the other pieces of fast relaxation are in place. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99244 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 01:39:05 +00:00
Daniel Dunbar
3f4dcd92da MC: Add MCInstFragment, not used yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99229 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 23:16:48 +00:00
Daniel Dunbar
9d39e616cc MC: Fix a few more cases we were passing an MCDataFragment when a MCFragment would do, and sprinkle in some const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99218 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 21:49:41 +00:00
Daniel Dunbar
c6f598209a Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99217 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 21:49:38 +00:00
Daniel Dunbar
b751418a39 MC: Change MCObjectWriter::RecordRelocation to take an MCFragment (instead of a MCDataFragment). Object files should only need the generic MCFragment features. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99205 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 20:35:50 +00:00
Daniel Dunbar
2a6e3f5be2 MC: Eliminate MCFragment::getMaxFileSize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99203 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 20:35:43 +00:00
Daniel Dunbar
8d39eb47d6 MC: Share the MCAsmLayout object, although its still not used for anything important. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99202 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 20:35:35 +00:00
Daniel Dunbar
1a9158c301 MC: Add TargetAsmBackend::createObjectWriter. 
- MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98955 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 10:43:26 +00:00
Daniel Dunbar
b36052f0e4 MCCodeEmitter: Add target independent fixup flag for is-pc-relative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98954 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 10:43:23 +00:00
Daniel Dunbar
cf871e5abf MC: Sink code emitter into MCAssembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98953 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 10:43:18 +00:00
Daniel Dunbar
2df4ceba15 MC/Mach-O: Move to MachObjectWriter.{h,cpp}. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98952 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 10:43:15 +00:00
Daniel Dunbar
cc5b84c6fb MC: Add TargetAsmBackend::isVirtualSection hook. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 09:29:03 +00:00
Daniel Dunbar
53b2338a1d MC: Split MCObjectWriter out of MCAssembler.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 09:28:59 +00:00
Daniel Dunbar
bdd9281f35 MCAssembler: Pull out MCObjectWriter class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98948 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 09:28:55 +00:00
Daniel Dunbar
87190c473c MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 09:28:12 +00:00
Daniel Dunbar
b1e98945e4 MC/Mach-O: Lift the fixup evaluation and application up (to the same place), and eliminate MCAsmFixup::FixedValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98944 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 07:09:47 +00:00
Daniel Dunbar
bacba99778 MC/Mach-O: Factor out ExecutePostLayoutBinding, to separate the post-layout changes the object writer may need to make to the assembler from the actual .o writing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98943 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 07:09:33 +00:00
Daniel Dunbar
17a0650641 MC/Mach-O: Lift relocation emission logic a bit higher to separate evaluation / relocation handling from the actual .o writing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98942 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 07:09:18 +00:00
Daniel Dunbar
034843ac8b MC/Mach-O: Add isScatteredFixupFullyResolved, which implements the correct algorithm (used on x86_64) for determining whether an evaluated fixup is fully resolved (doesn't need relocation). 
- Test cases will follow, once we have x86_64 relocation support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98926 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 03:18:18 +00:00
Daniel Dunbar
8ad0dccbf2 MC/Mach-O/x86_64: Add getAtom[ForAddress]. 
- These find the defining symbol which identifies the containing atom for a symbol or address. They are currently very slow, but will be eliminated eventually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 03:18:15 +00:00
Daniel Dunbar
939f8d7ca2 MC/Mach-O: Factor out isScatteredFixupFullyResolvedSimple predicate, and fix some corner cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98924 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 03:18:12 +00:00
Daniel Dunbar
2386985663 MC/Mach-O: Factor out isSymbolLinkerVisible method; "linker visible" is a made up term to refer to non-temporary labels + temporary labels in sections-which-require symbols. For Darwin, it corresponds to symbols which effectively define an atom. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98923 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 03:18:09 +00:00
Daniel Dunbar
9a1d20042f MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 00:59:10 +00:00
Daniel Dunbar
d6e59084d0 MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98583 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 21:56:50 +00:00
Daniel Dunbar
99d22adcad MC/Mach-O: Add MCSectionMachO::getType() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98582 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 21:56:38 +00:00
Daniel Dunbar
5691e74f97 MC/X86_64: Symbol support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 22:49:35 +00:00
Daniel Dunbar
ee0d89245e MC/Mach-O: Initial x86_64 support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 22:10:17 +00:00
Daniel Dunbar
da3e9f760c MC/Mach-O: PCrel relocations weren't using the right base address, they are 
relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98420 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 02:38:00 +00:00
Daniel Dunbar
f08fde41f3 MC/Mach-O: Implement initial support for relaxation. 
- The implementation is currently very brain dead and inefficient, but I have a
   clear plan on how to fix it.

 - The good news is, it works and correctly assembles 403.gcc (when built with
   Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g',
   the resulting binary is exactly equivalent to that when built with the system
   assembler. So it probably works! :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 22:07:14 +00:00
Daniel Dunbar
df3c8f2969 MC: Factor out MCAssembler::EvaluateFixup, and simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98381 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:00:49 +00:00
Daniel Dunbar
8f0448cabc MC/Mach-O: Add MCSymbolData::getAddress() utility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 18:22:51 +00:00
Daniel Dunbar
979ba5b3c7 MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 05:53:37 +00:00
Daniel Dunbar
18ff2cced7 MC/Mach-O: Start passing in the basic MCAsmLayout object. 
- Also, drop the current location part of AsmLayout, I think I prefer to implement this via explicit symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98240 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 05:53:33 +00:00
Daniel Dunbar
1f3e445184 MC: Provide MCAssembler with a TargetAsmBackend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 01:34:27 +00:00
Daniel Dunbar
2101d9c4af MC/Mach-O: Use the MCAssembler symbol map instead of reconstructing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98187 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 20:58:31 +00:00
Daniel Dunbar
07a9641ebf MC/Mach-O: Resolve a FIXME; these relocation types are no longer semanticaly different. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:10:29 +00:00
Daniel Dunbar
a015c1c876 MC/Mach-O: Use the SECTDIFF relocation type for (A - B + constant) where A is external. 
- I'm not sure why, but this is what 'as' does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98115 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:58:25 +00:00
Daniel Dunbar
f3a066f7c3 MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98082 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:58 +00:00
Daniel Dunbar
aef9d7af69 MC/Mach-O: Also set the PCrel bit in the second half of paired relocation entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98081 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:47 +00:00
Daniel Dunbar
e180fa962c MC/Mach-O: Don't generate relocations for PCrel fixups to local labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98080 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:30 +00:00
Daniel Dunbar
45aefff64c MC/Mach-O: Tweak .dump() formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:23 +00:00
Daniel Dunbar
f8b8ad77a8 MC/Mach-O: Don't adjust section sizes when aligning zero fill sections, just pad the address. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98027 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:20 +00:00
Daniel Dunbar
b2b4acd757 MC/Macho-O: Align the zerofill section itself to the maximum alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:03:42 +00:00
Daniel Dunbar
37fad5ce4d MC/Mach-O: Fix address compution for zero fill sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:42 +00:00
Daniel Dunbar
0ce6bd55c3 MC/Mach-O: Error out instead of crashing on invalid scattered relocation expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97983 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:39 +00:00
Kevin Enderby
76687083a5 This is the second patch to allow x86 code to be aligned with optimal nops. 
With the compiler changed to use EmitCodeAlignment() it does change the
functionality.  But X86 assembly code assembled with llvm-mc does not change
its output.  For that we will eventually change the assembler frontend to
detect a '.align x, 0x90' when used in a section that 'hasInstructions' and use
EmitCodeAlignment, but will wait until we have better target hooks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 21:41:24 +00:00
Kevin Enderby
6e72048add This is the first patch to put the needed bits in place to eventually allow code 
to be aligned with optimal nops.  This patch does not change any functionality
and when the compiler is changed to use EmitCodeAlignment() it should also not
change the resulting output.  Once the compiler change is made and everything
looks good the next patch with the table of optimal X86 nops will be added to
WriteNopData() changing the output.  There are many FIXMEs in this patch which
will be removed when we have better target hooks (coming soon I hear).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 18:26:34 +00:00
Daniel Dunbar
eb3804e39a MC/Mach-O: Update fixup values for change to X86 offsets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-17 23:45:16 +00:00
Duncan Sands
9a7795cbed Pacify gcc-4.5, which warns (correctly) that these switches have 
cases that are not part of the enum.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-17 14:52:22 +00:00
Daniel Dunbar
591047f714 MCAssembler: Fix pcrel relocations. Oh and, 
--
ddunbar@ozzy:tmp$ clang -m32 -integrated-as hello.c && ./a.out
hello world!
--

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96096 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:45:59 +00:00
Daniel Dunbar
f6346769b3 MC/Mach-O: Start emitting fixups/relocations for instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96095 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:29:02 +00:00
Daniel Dunbar
2be2fd0730 MCAssembler: Switch MCAsmFixup to storing MCFixupKind instead of just a size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96094 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:28:54 +00:00
Daniel Dunbar
0bcf074867 MCAssembler: Sink fixup list into MCDataFragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96093 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:28:43 +00:00
Daniel Dunbar
a4766d7af9 MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic expressions can always be emitted as data + fixups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96092 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:28:32 +00:00
Daniel Dunbar
3a30b827a5 MCAssembler: Start applying fixups in the data section. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96090 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:28:15 +00:00
Daniel Dunbar
b7c3a4b195 MCAssembler: Add assorted dump() methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96089 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-13 09:28:03 +00:00
Daniel Dunbar
cb7d743b42 MC: Move assembler-backend's fixup list into the fragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95926 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:46 +00:00
Daniel Dunbar
27ade18431 MC: Move MCSectionData::Fixup out to MCAsmFixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-11 21:29:29 +00:00
Daniel Dunbar
6b71653c82 llvm-mc: Add --show-fixups option, for displaying the instruction fixup information in the asm comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 23:00:14 +00:00
Daniel Dunbar
e1ec617c6a MC/Mach-O: Set SOME_INSTRUCTIONS bit for sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-02 21:44:01 +00:00
Chris Lattner
45f8c095ad Add a new top-level MachO.h file for manifest constants, fixing 
a layering violation from MC -> Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-02 19:38:14 +00:00
Nate Begeman
60a17740b8 Remove this fixme, looking at the linker source, all targets pad to 4 bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93835 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-19 01:32:44 +00:00
Daniel Dunbar
2928c83b01 Pass StringRef by value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 10:58:06 +00:00
Daniel Dunbar
7eb85194f2 Minor formatting tweaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84235 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-16 01:58:15 +00:00
Daniel Dunbar
1253a6fa3b MC: Switch assembler API to using MCExpr instead of MCValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84234 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-16 01:58:03 +00:00
Daniel Dunbar
efbb5330b8 llvm-mc: Store MCSymbolData value as a pointer (to make MSVC happy). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80652 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-01 04:09:03 +00:00
Daniel Dunbar
cb579b3338 llvm-mc: Make MCSymbolData symbol member const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80573 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-31 08:08:06 +00:00
Daniel Dunbar
a03a368acc llvm-mc: Add MCContext to MCAssembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80572 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-31 08:07:55 +00:00
Daniel Dunbar
8f4d146c34 llvm-mc: Support .comm emission. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80351 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 07:08:35 +00:00
Daniel Dunbar
d5a8e98ef6 llvm-mc: Support .zerofill emission. 
- I'm still trying to figure out the cleanest way to implement this and match the assembler, currently there are some substantial differences.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80347 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 05:49:21 +00:00
Daniel Dunbar
edc670f3f2 llvm-mc: Tweak section alignment and size computation to match 'as' closer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80345 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 05:49:04 +00:00
Daniel Dunbar
6c31b0575c llvm-mc: Fix thinko in emitting values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80340 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 05:48:10 +00:00
Daniel Dunbar
81e400092f Try to make MSVC just a little happier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80187 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-27 00:38:04 +00:00
Daniel Dunbar
959fd88334 llvm-mc/Mach-O: Don't put assembler temporary labels in the symbol table. 
- I moved section creation back into AsmParser. I think policy decisions like
   this should be pushed higher, not lower, when possible (in addition the
   assembler has flags which change this behavior, for example).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80162 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-26 22:13:22 +00:00
Daniel Dunbar
6009db486e llvm-mc/Mach-O: Set .subsections_via_symbols flag properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80144 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-26 21:22:22 +00:00
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
be96355694 llvm-mc/Mach-O: Move symbol indices into the MCSymbolData structure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80088 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-26 13:57:54 +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
0adcd35f78 llvm-mc: Add statistic for number of fragments emitted by the assembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80033 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-25 21:10:45 +00:00
Daniel Dunbar
0c7761b3f9 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-24 11:56:58 +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
50e48b359e llvm-mc: Tweak undefined symbol handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79898 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-24 08:39:57 +00:00
Chris Lattner
23132b188b 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79885 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-24 03:52:50 +00:00
Chris Lattner
bea2c95704 tweak #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79744 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-22 19:19:12 +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
f3d2ef0c97 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79739 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-22 10:13:24 +00:00
Daniel Dunbar
2ae58f2851 llvm-mc/Mach-O: Move more logic for writing the Mach-O file into the writer 
class, and kill off MCSectionData::FileOffset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79735 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-22 08:28:27 +00:00
Daniel Dunbar
a5441fea1f llvm-mc: Rename / redefine MCFragment::FileOffset to MCFragment::Offset (the 
section offset).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79734 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-22 08:27:54 +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