Daniel Dunbar
77240e2337
MC: Simplify MayNeedRelaxation to not provide the fixups, so we can query it
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before encoding.
llvm-svn: 104707
2010-05-26 17:45:29 +00:00
Daniel Dunbar
87dcbd1ee5
MC: Eliminate MCAsmFixup, replace with MCFixup.
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llvm-svn: 104699
2010-05-26 15:18:56 +00:00
Daniel Dunbar
55c1bf55fe
MC: Use accessors for access to MCAsmFixup.
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llvm-svn: 104697
2010-05-26 15:18:31 +00:00
Eric Christopher
d250f449cb
Expand on comment.
...
llvm-svn: 104396
2010-05-21 23:03:53 +00:00
Eric Christopher
3f0aa8bf21
Implement EmitTBSSSymbol for MachOStreamer.
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Fixes build failure as well.
llvm-svn: 104059
2010-05-18 21:26:41 +00:00
Daniel Dunbar
739e720a21
MC/Mach-O: Implement support for setting indirect symbol table offset in section header.
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Also, create symbol data for LHS of assignment, to match 'as' symbol ordering better.
llvm-svn: 104033
2010-05-18 17:28:24 +00:00
Daniel Dunbar
5ed90337ff
MC/Mach-O: Fail faster/harder when we see .file, which isn't yet supported.
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llvm-svn: 104031
2010-05-18 17:28:17 +00:00
Daniel Dunbar
ee5ac7a69b
MC/Mach-O: Reverse order of SymbolData scanning when emitting instructions.
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- This fixes a string table mismatch with 'as' when two new symbols are defined
in a single instruction.
llvm-svn: 103979
2010-05-17 21:19:59 +00:00
Daniel Dunbar
80719b2d36
MC/Mach-O: Fix some differences in symbol flag handling.
...
- Don't clear weak reference flag, 'as' was only "trying" to do this, it wasn't
actually succeeding.
- Clear the "lazy bound" bit when we mark something external. This corresponds
roughly to the lazy clearing of the bit that 'as' implements in
symbol_table_lookup.
- The exact meaning of these flags appears pretty loose, since 'as' isn't very
consistent. For now we just try to match 'as', we will clean this up one day
hopefully.
llvm-svn: 103964
2010-05-17 20:12:31 +00:00
Eric Christopher
ebea91f168
Add AsmParser support for darwin tbss directive.
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Nothing uses this yet.
llvm-svn: 103757
2010-05-14 01:50:28 +00:00
Daniel Dunbar
de7caed021
MC: Move MCAlignFragment::EmitNops value out of the constructor.
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llvm-svn: 103665
2010-05-12 22:56:23 +00:00
Daniel Dunbar
cf11e2a0a5
MC: Eliminate MCZeroFillFragment, it is no longer needed.
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llvm-svn: 103664
2010-05-12 22:51:38 +00:00
Daniel Dunbar
d3f60794d8
MC: Drop support for alignment in ZeroFill fragment, we can just use
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MCAlignFragments for this.
llvm-svn: 103661
2010-05-12 22:51:27 +00:00
Daniel Dunbar
00ffbb63da
MC/Mach-O: Explicitly track atoms, as represented by their defining symbol, for each fragment (not yet used).
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llvm-svn: 103438
2010-05-10 22:45:09 +00:00
Chris Lattner
568058ef71
break coff symbol definition stuff out into proper MCStreamer callbacks,
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patch by Nathan Jeffords!
llvm-svn: 103346
2010-05-08 19:54:22 +00:00
Kevin Enderby
3807a4746a
Fix i386 relocations to Weak Definitions. The relocation entries should be
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external and the item to be relocated should not have the address of the
symbol added in.
llvm-svn: 103302
2010-05-07 21:44:23 +00:00
Daniel Dunbar
9a3d46162f
MC/Mach-O: Mark absolute variable's appropriately, and add Mach-O support for
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writing them.
- <rdar://problem/7885351> integrated assembler broken for i386 objc code
llvm-svn: 103112
2010-05-05 19:01:05 +00:00
Daniel Dunbar
139bd85642
MC: Reject attempts to define a variable symbol.
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llvm-svn: 103111
2010-05-05 19:01:00 +00:00
Daniel Dunbar
d2ac9dc48b
MC: Rename MCSymbol::{g,s}etValue -> MCSymbol::{g,s}etVariableValue.
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llvm-svn: 103095
2010-05-05 17:41:00 +00:00
Daniel Dunbar
d04906b49e
llvm-mc: Add a -mc-relax-all option, which relaxes every fixup. We always need
...
exactly two passes in that case, and don't ever need to recompute any layout,
so this is a nice baseline for relaxation performance.
llvm-svn: 99563
2010-03-25 22:49:09 +00:00
Daniel Dunbar
14c84e0c3b
MC: Switch to using MCInst fragments to do relaxation.
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Also, both MCMachOStreamer and MCAssembler are now target independent!
llvm-svn: 99256
2010-03-23 05:09:03 +00:00
Daniel Dunbar
47743ae59a
MC: Add TargetAsmBackend::MayNeedRelaxation, for checking whether a particular instruction + fixups might need relaxation.
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llvm-svn: 99249
2010-03-23 03:13:05 +00:00
Daniel Dunbar
b33d212057
MC: Add TargetAsmBackend::WriteNopData and use to eliminate some target dependencies in MCMachOStreamer and MCAssembler.
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llvm-svn: 99248
2010-03-23 02:36:58 +00:00
Daniel Dunbar
0f6983752f
MC: Add MCInstFragment, not used yet.
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llvm-svn: 99229
2010-03-22 23:16:48 +00:00
Daniel Dunbar
e7900757bd
MC/Mach-O: Factor out getOrCreateDataFragment().
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llvm-svn: 99204
2010-03-22 20:35:46 +00:00
Daniel Dunbar
c47468760e
MC: Sink code emitter into MCAssembler.
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llvm-svn: 98953
2010-03-19 10:43:18 +00:00
Daniel Dunbar
03a9f8588c
MC: Fix a crash on invalid, attempting to evaluate undefined symbols.
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llvm-svn: 98464
2010-03-14 03:10:40 +00:00
Daniel Dunbar
71473e6b15
MC: Add MCAssembler::addFixup, which enforces that fixups are added in order.
...
llvm-svn: 98379
2010-03-12 21:00:38 +00:00
Daniel Dunbar
687d99cfa8
MC: Provide MCAssembler with a TargetAsmBackend.
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llvm-svn: 98222
2010-03-11 01:34:27 +00:00
Daniel Dunbar
fc99f844eb
MC: Move the backend section and symbol data maps to MCAssembler.
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llvm-svn: 98186
2010-03-10 20:58:29 +00:00
Daniel Dunbar
8f981447a6
Remove unneeded includes.
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llvm-svn: 98167
2010-03-10 17:56:05 +00:00
Kevin Enderby
c11390f758
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).
llvm-svn: 96963
2010-02-23 18:26:34 +00:00
Daniel Dunbar
2097684f80
MC/Mach-O: Remove non-sensical comment, and add a missing AddValueSymbols call.
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llvm-svn: 96809
2010-02-22 22:08:57 +00:00
Daniel Dunbar
c05a38a3d3
MC/Mach-O: Start emitting fixups/relocations for instructions.
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llvm-svn: 96095
2010-02-13 09:29:02 +00:00
Daniel Dunbar
7a1fd21459
MCAssembler: Switch MCAsmFixup to storing MCFixupKind instead of just a size.
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llvm-svn: 96094
2010-02-13 09:28:54 +00:00
Daniel Dunbar
cc282ba52e
MC/Mach-O: Implement EmitValue using data fragments + fixups instead of fill fragment.
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llvm-svn: 96091
2010-02-13 09:28:22 +00:00
Daniel Dunbar
ddfda89472
MC: First cut at MCFixup, for getting fixup/relocation information out of an MCCodeEmitter.
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llvm-svn: 95708
2010-02-09 22:59:55 +00:00
Chris Lattner
b3fe7597f5
add scaffolding for target-specific MCExprs.
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llvm-svn: 95559
2010-02-08 19:41:07 +00:00
Daniel Dunbar
eb0b81040a
MC/Mach-O: Set SOME_INSTRUCTIONS bit for sections.
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llvm-svn: 95135
2010-02-02 21:44:01 +00:00
Chris Lattner
3559d9a38a
mcstreamerize gprel32 emission.
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llvm-svn: 94452
2010-01-25 21:28:50 +00:00
Chris Lattner
20d89c382c
mcstreamerize .file and .file. This also fixes an issue where the
...
normal form of .file would fail if the filename had a weird character
in it.
llvm-svn: 94437
2010-01-25 18:58:59 +00:00
Chris Lattner
7a5c8c15bd
add symbol attribute support for the ELF .type directive.
...
llvm-svn: 94435
2010-01-25 18:30:45 +00:00
Chris Lattner
9834b7f300
emit the .size directive for global variables on ELF through
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mcstreamer.
llvm-svn: 94416
2010-01-25 07:52:13 +00:00
Chris Lattner
617e6fb889
mcize lcomm, simplify .comm, extend both to support 64-bit sizes.
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llvm-svn: 94299
2010-01-23 07:47:02 +00:00
Chris Lattner
60edc92e39
move the various directive enums out of the MCStreamer class
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into a new MCDirectives.h file.
llvm-svn: 94294
2010-01-23 06:39:22 +00:00
Chris Lattner
62d08f5577
mcstreamerize .no_dead_strip and .reference for static ctors/dtors.
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llvm-svn: 94290
2010-01-23 05:51:36 +00:00
Chris Lattner
336c2b0d47
Generalize mcasmstreamer data emission APIs to take an address space
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identifier. There is no way to work around it.
llvm-svn: 93896
2010-01-19 19:46:13 +00:00
Nate Begeman
04da97bd5e
Add a note for the macho streamer and remove a used of the mangler from the soon to be defunct machowriter pass.
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llvm-svn: 93670
2010-01-17 03:49:01 +00:00
Daniel Dunbar
4daaf9d3f4
Pass StringRef by value.
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llvm-svn: 86251
2009-11-06 10:58:06 +00:00
Daniel Dunbar
2be596c127
MC: Set symbol values in MachO MCStreamer.
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llvm-svn: 84236
2009-10-16 01:58:23 +00:00
Daniel Dunbar
0df659c00b
MC: Switch assembler API to using MCExpr instead of MCValue.
...
llvm-svn: 84234
2009-10-16 01:58:03 +00:00
Daniel Dunbar
022b59a0b5
MC: Remove unneeded context argument to MCExpr::Evaluate*.
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llvm-svn: 84233
2009-10-16 01:57:52 +00:00
Daniel Dunbar
3a44b6da61
llvm-mc: Pass values to MCStreamer as MCExprs, not MCValues.
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llvm-svn: 80578
2009-08-31 08:09:28 +00:00
Daniel Dunbar
b897e807c4
llvm-mc: Simplify EmitAssignment ('.set' is identical to '=').
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llvm-svn: 80577
2009-08-31 08:09:09 +00:00
Daniel Dunbar
fcb32716eb
llvm-mc: Switch MCInst to storing an MCExpr* instead of an MCValue.
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Also, use MCInst::print instead of custom code in MCAsmPrinter.
llvm-svn: 80575
2009-08-31 08:08:38 +00:00
Daniel Dunbar
be245a258c
llvm-mc: Make MCSymbolData symbol member const.
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llvm-svn: 80573
2009-08-31 08:08:06 +00:00
Daniel Dunbar
1689464a71
llvm-mc: Add MCContext to MCAssembler.
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llvm-svn: 80572
2009-08-31 08:07:55 +00:00
Daniel Dunbar
bc61205626
llvm-mc: MCStreamer cleanups. - Remove EmitLocalSymbol, this is unsupported for now.
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- Switch Emit{CommonSymbol,Zerofill} to take alignment in bytes (for consistency).
llvm-svn: 80484
2009-08-30 06:17:16 +00:00
Daniel Dunbar
e3cf39c644
llvm-mc: .lsym is more unsupported than unimplemented, pending a use case appearing.
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Also, all one of the file level flags are implemented.
llvm-svn: 80352
2009-08-28 07:08:47 +00:00
Daniel Dunbar
eec2764d55
llvm-mc: Support .comm emission.
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llvm-svn: 80351
2009-08-28 07:08:35 +00:00
Daniel Dunbar
5749caa698
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.
llvm-svn: 80347
2009-08-28 05:49:21 +00:00
Daniel Dunbar
8aa87b9f63
llvm-mc: Factor getSectionData out of SwitchSection.
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llvm-svn: 80344
2009-08-28 05:48:54 +00:00
Daniel Dunbar
09ed9fabde
llvm-mc: Emit .lcomm as .zerofill.
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llvm-svn: 80343
2009-08-28 05:48:46 +00:00
Daniel Dunbar
aace3b9577
llvm-mc: Add const to EmitZeroFill section argument.
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llvm-svn: 80341
2009-08-28 05:48:22 +00:00
Daniel Dunbar
e30a44267c
llvm-mc/Mach-O: Add MCCodeEmitter support, for encoding instructions.
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- No relocations yet, of course.
llvm-svn: 80235
2009-08-27 08:17:51 +00:00
Daniel Dunbar
5e9b7483b7
llvm-mc/Mach-O: Set .subsections_via_symbols flag properly.
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llvm-svn: 80144
2009-08-26 21:22:22 +00:00
Daniel Dunbar
f7a22e19cf
llvm-mc: Add symbol entries for undefined symbols used in .fill and .org.
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llvm-svn: 80086
2009-08-26 13:57:37 +00:00
Daniel Dunbar
a36793b5b5
llvm-mc/Mach-O: Set addresses for symbols.
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llvm-svn: 80065
2009-08-26 02:48:04 +00:00
Daniel Dunbar
6bb1f76970
llvm-mc: Improve indirect symbol support (add the indirect index table).
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llvm-svn: 80059
2009-08-26 00:18:21 +00:00
Daniel Dunbar
344ea15334
llvm-mc/Mach-O: Preliminary support for indirect symbols.
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- 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
937b745b68
llvm-mc/Mach-O: Support symbol attributes.
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- 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
Chris Lattner
29213a76e4
prune some redundant #includes.
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llvm-svn: 79746
2009-08-22 19:35:08 +00:00
Daniel Dunbar
4c3cf93d1d
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
d22c0d4d49
llvm-mc/Mach-O: Sketch symbol table support.
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- 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
2bb8df3b5d
llvm-mc: Clean up some handling of symbol/section association to be more correct
...
(external was really undefined and there wasn't an explicit representation for
absolute symbols).
- This still needs some cleanup to how the absolute "pseudo" section is dealt
with, but I haven't figured out the nicest approach yet.
llvm-svn: 79733
2009-08-22 07:22:36 +00:00
Daniel Dunbar
aa60fad397
llvm-mc/Mach-O: Support .o emission for .org and .align.
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llvm-svn: 79684
2009-08-21 23:07:38 +00:00
Daniel Dunbar
ca9ad524dc
llvm-mc/Mach-O: Support byte and fill value emission.
...
llvm-svn: 79652
2009-08-21 18:29:01 +00:00
Daniel Dunbar
7e81ff0f87
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