mirrors/llvm-project
0
0
Fork 0
mirror of https://github.com/llvm/llvm-project.git synced 2025-05-02 21:26:05 +00:00
Code Issues Projects Releases Wiki Activity
80,741 Commits 1,258 Branches 288 Tags
Commit Graph

102 Commits

Author SHA1 Message Date
Daniel Dunbar
4108802628 MC: Explicity track section and fragment ordinals. 
llvm-svn: 99500
 2010-03-25 07:10:11 +00:00
Daniel Dunbar
5b07334c0d MC: Route access to SectionData offset and file size through MCAsmLayout. 
llvm-svn: 99474
 2010-03-25 02:00:07 +00:00
Daniel Dunbar
2522dd1c49 MC: Route access to Fragment offset and effective size through MCAsmLayout. 
llvm-svn: 99473
 2010-03-25 02:00:02 +00:00
Daniel Dunbar
5d98824615 MC: Eliminate MC{Fragment,{Section,Symbol}Data}::getAddress. 
llvm-svn: 99467
 2010-03-25 01:03:24 +00:00
Daniel Dunbar
7c969558d9 MC: Direct all {fragment,section,symbol} address access through the MCAsmLayout object. 
llvm-svn: 99380
 2010-03-24 03:43:40 +00:00
Daniel Dunbar
5376c2a431 MC: Sprinkle in some more interesting statistics. 
llvm-svn: 99350
 2010-03-23 23:47:14 +00:00
Daniel Dunbar
de04b3f62c MC: Switch to using MCInst fragments to do relaxation. 
Also, both MCMachOStreamer and MCAssembler are now target independent!

llvm-svn: 99256
 2010-03-23 05:09:03 +00:00
Daniel Dunbar
86face8333 MC: Add TargetAsmBackend::MayNeedRelaxation, for checking whether a particular instruction + fixups might need relaxation. 
llvm-svn: 99249
 2010-03-23 03:13:05 +00:00
Daniel Dunbar
a9ae3ae698 MC: Add TargetAsmBackend::WriteNopData and use to eliminate some target dependencies in MCMachOStreamer and MCAssembler. 
llvm-svn: 99248
 2010-03-23 02:36:58 +00:00
Daniel Dunbar
16cbe95dd6 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. 
llvm-svn: 99244
 2010-03-23 01:39:05 +00:00
Daniel Dunbar
b31c49a70d MC: Add MCInstFragment, not used yet. 
llvm-svn: 99229
 2010-03-22 23:16:48 +00:00
Daniel Dunbar
fdc7ccc4e4 MC: Fix a few more cases we were passing an MCDataFragment when a MCFragment would do, and sprinkle in some const. 
llvm-svn: 99218
 2010-03-22 21:49:41 +00:00
Daniel Dunbar
20ea02fde2 Simplify. 
llvm-svn: 99217
 2010-03-22 21:49:38 +00:00
Daniel Dunbar
a0ab4bf989 MC: Change MCObjectWriter::RecordRelocation to take an MCFragment (instead of a MCDataFragment). Object files should only need the generic MCFragment features. 
llvm-svn: 99205
 2010-03-22 20:35:50 +00:00
Daniel Dunbar
9213355a91 MC: Eliminate MCFragment::getMaxFileSize. 
llvm-svn: 99203
 2010-03-22 20:35:43 +00:00
Daniel Dunbar
32ffc58ca9 MC: Share the MCAsmLayout object, although its still not used for anything important. 
llvm-svn: 99202
 2010-03-22 20:35:35 +00:00
Daniel Dunbar
4d7c8645fd MC: Add TargetAsmBackend::createObjectWriter. 
- MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.

llvm-svn: 98955
 2010-03-19 10:43:26 +00:00
Daniel Dunbar
eaa367f5ae MCCodeEmitter: Add target independent fixup flag for is-pc-relative. 
llvm-svn: 98954
 2010-03-19 10:43:23 +00:00
Daniel Dunbar
1bd7171c95 MC: Sink code emitter into MCAssembler. 
llvm-svn: 98953
 2010-03-19 10:43:18 +00:00
Daniel Dunbar
79e0e5a631 MC/Mach-O: Move to MachObjectWriter.{h,cpp}. 
llvm-svn: 98952
 2010-03-19 10:43:15 +00:00
Daniel Dunbar
c5084cccc8 MC: Add TargetAsmBackend::isVirtualSection hook. 
llvm-svn: 98950
 2010-03-19 09:29:03 +00:00
Daniel Dunbar
f027abf7de MC: Split MCObjectWriter out of MCAssembler.cpp. 
llvm-svn: 98949
 2010-03-19 09:28:59 +00:00
Daniel Dunbar
49e5a8ac2a MCAssembler: Pull out MCObjectWriter class. 
llvm-svn: 98948
 2010-03-19 09:28:55 +00:00
Daniel Dunbar
f0517efc6c MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task. 
llvm-svn: 98947
 2010-03-19 09:28:12 +00:00
Daniel Dunbar
3cab275783 MC/Mach-O: Lift the fixup evaluation and application up (to the same place), and eliminate MCAsmFixup::FixedValue. 
llvm-svn: 98944
 2010-03-19 07:09:47 +00:00
Daniel Dunbar
d84d196a86 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. 
llvm-svn: 98943
 2010-03-19 07:09:33 +00:00
Daniel Dunbar
563d40eda6 MC/Mach-O: Lift relocation emission logic a bit higher to separate evaluation / relocation handling from the actual .o writing. 
llvm-svn: 98942
 2010-03-19 07:09:18 +00:00
Daniel Dunbar
0f7fbb3d00 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.

llvm-svn: 98926
 2010-03-19 03:18:18 +00:00
Daniel Dunbar
6e13bb07fb 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.

llvm-svn: 98925
 2010-03-19 03:18:15 +00:00
Daniel Dunbar
5ec4bdd1b3 MC/Mach-O: Factor out isScatteredFixupFullyResolvedSimple predicate, and fix some corner cases. 
llvm-svn: 98924
 2010-03-19 03:18:12 +00:00
Daniel Dunbar
c558ec211f 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. 
llvm-svn: 98923
 2010-03-19 03:18:09 +00:00
Daniel Dunbar
9c64ec0a7e MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers. 
llvm-svn: 98791
 2010-03-18 00:59:10 +00:00
Daniel Dunbar
fe8d866fc7 MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet). 
llvm-svn: 98583
 2010-03-15 21:56:50 +00:00
Daniel Dunbar
232dc953ac MC/Mach-O: Add MCSectionMachO::getType() 
llvm-svn: 98582
 2010-03-15 21:56:38 +00:00
Daniel Dunbar
7c1f3d8cad MC/X86_64: Symbol support. 
llvm-svn: 98456
 2010-03-13 22:49:35 +00:00
Daniel Dunbar
56597588f0 MC/Mach-O: Initial x86_64 support. 
llvm-svn: 98454
 2010-03-13 22:10:17 +00:00
Daniel Dunbar
34b8e553ea 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.

llvm-svn: 98420
 2010-03-13 02:38:00 +00:00
Daniel Dunbar
12f1e32d59 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! :)

llvm-svn: 98396
 2010-03-12 22:07:14 +00:00
Daniel Dunbar
ea9e2f8a15 MC: Factor out MCAssembler::EvaluateFixup, and simplify. 
llvm-svn: 98381
 2010-03-12 21:00:49 +00:00
Daniel Dunbar
64b408b124 MC/Mach-O: Add MCSymbolData::getAddress() utility. 
llvm-svn: 98266
 2010-03-11 18:22:51 +00:00
Daniel Dunbar
5c5228a8f6 MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables. 
llvm-svn: 98241
 2010-03-11 05:53:37 +00:00
Daniel Dunbar
cf55f96214 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.

llvm-svn: 98240
 2010-03-11 05:53:33 +00:00
Daniel Dunbar
c5ddbad237 MC: Provide MCAssembler with a TargetAsmBackend. 
llvm-svn: 98222
 2010-03-11 01:34:27 +00:00
Daniel Dunbar
dc765e9f03 MC/Mach-O: Use the MCAssembler symbol map instead of reconstructing. 
llvm-svn: 98187
 2010-03-10 20:58:31 +00:00
Daniel Dunbar
46ed804180 MC/Mach-O: Resolve a FIXME; these relocation types are no longer semanticaly different. 
llvm-svn: 98120
 2010-03-10 02:10:29 +00:00
Daniel Dunbar
27b984ac85 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.

llvm-svn: 98115
 2010-03-10 00:58:25 +00:00
Daniel Dunbar
3dde457b94 MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation. 
llvm-svn: 98082
 2010-03-09 21:27:58 +00:00
Daniel Dunbar
d49794e703 MC/Mach-O: Also set the PCrel bit in the second half of paired relocation entries. 
llvm-svn: 98081
 2010-03-09 21:27:47 +00:00
Daniel Dunbar
4680000b27 MC/Mach-O: Don't generate relocations for PCrel fixups to local labels. 
llvm-svn: 98080
 2010-03-09 21:27:30 +00:00
Daniel Dunbar
cb01210eca MC/Mach-O: Tweak .dump() formatting. 
llvm-svn: 98028
 2010-03-09 01:12:23 +00:00