Daniel Dunbar
9a1bbd9dc5
MC/Mach-O: Remove some FIXMEs.
...
llvm-svn: 104032
2010-05-18 17:28:20 +00:00
Daniel Dunbar
5ed90337ff
MC/Mach-O: Fail faster/harder when we see .file, which isn't yet supported.
...
llvm-svn: 104031
2010-05-18 17:28:17 +00:00
Benjamin Kramer
ad350eb789
Simplify MCContext::(Next|Get)Instance
...
- Allocate MCLabels in the context so they don't leak.
- Avoid duplicated densemap lookup.
llvm-svn: 104020
2010-05-18 12:15:34 +00:00
Kevin Enderby
14c986967b
Added support in MC for Directional Local Labels.
...
llvm-svn: 103989
2010-05-17 23:08:19 +00:00
Eric Christopher
6ea9cf8425
More data/parsing support for tls directives. Add a few more testcases
...
and cleanup comments as well.
llvm-svn: 103985
2010-05-17 22:53:55 +00:00
Daniel Dunbar
b18dfe6cb4
MC/Mach-O/x86: Optimal nop sequences should only be used for the .text sections, not all sections in the text segment.
...
llvm-svn: 103981
2010-05-17 21:54:30 +00:00
Daniel Dunbar
7e141838cd
MC: Add dyn_cast support to MCSection.
...
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.
llvm-svn: 103980
2010-05-17 21:54:26 +00:00
Daniel Dunbar
ee5ac7a69b
MC/Mach-O: Reverse order of SymbolData scanning when emitting instructions.
...
- 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
Eric Christopher
380e16a725
Add some section and constant support for darwin TLS.
...
llvm-svn: 103974
2010-05-17 21:02:07 +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
Daniel Dunbar
8f5da3624f
llvm-mc: Support reassignment of variables in one special case, when the
...
variable has not yet been used in an expression. This allows us to support a few
cases that show up in real code (mostly because gcc generates it for Objective-C
on Darwin), without giving up a reasonable semantic model for assignment.
llvm-svn: 103950
2010-05-17 17:46:23 +00:00
Eric Christopher
950f0d7892
Assume that we'll handle mangling the symbols earlier and just put the
...
symbol to the file as we have it. Simplifies out tbss handling.
llvm-svn: 103928
2010-05-17 02:13:02 +00:00
Daniel Dunbar
89a1d9036a
MC/Mach-O/x86_64: Darwin's special "signed_N" relocation types should only be
...
used to replace a normal relocation, not a reference to a GOT entry.
llvm-svn: 103789
2010-05-14 18:53:40 +00:00
Eric Christopher
ebea91f168
Add AsmParser support for darwin tbss directive.
...
Nothing uses this yet.
llvm-svn: 103757
2010-05-14 01:50:28 +00:00
Eric Christopher
0b3085ae2e
Fix a couple of typos.
...
llvm-svn: 103756
2010-05-14 01:38:54 +00:00
Daniel Dunbar
7fee3c7b28
MC: Switch to completely lazy layout.
...
- The eliminates the last major algorithmic problem with MC.
llvm-svn: 103754
2010-05-14 00:51:14 +00:00
Daniel Dunbar
66c2ccec2d
MC: Extend MCAsmLayout to explicitly track which fragments have been layed out, and enforce several invariants to LayoutFragment to ensure we only do layout in a sensible order.
...
llvm-svn: 103753
2010-05-14 00:37:21 +00:00
Daniel Dunbar
bfc0b2083d
MC: Implicitly assign section addresses when the previous fragment is layed out.
...
llvm-svn: 103752
2010-05-14 00:37:17 +00:00
Daniel Dunbar
11467b2eaa
MC: Switch MCFragment to storing the layout order index, not its index in the file.
...
llvm-svn: 103751
2010-05-14 00:37:14 +00:00
Daniel Dunbar
b2a98e0a16
MC: Change LayoutSection() to only do the section initializiation.
...
Also, elimminate MCAsmLayout::set*, which are no longer needed.
llvm-svn: 103750
2010-05-14 00:37:11 +00:00
Daniel Dunbar
86825a9719
MC: Move Layout{Fragment,Section} into MCAsmLayout, and add LayoutFile().
...
llvm-svn: 103738
2010-05-13 20:40:12 +00:00
Daniel Dunbar
b142c00db4
MC: Factor out MCAssembler::ComputeFragmentSize.
...
llvm-svn: 103724
2010-05-13 18:35:06 +00:00
Daniel Dunbar
5a601f9e09
MC: Add section layout order indices to MCSectionData.
...
llvm-svn: 103715
2010-05-13 15:17:26 +00:00
Daniel Dunbar
aa67ae072c
MC: Move ordinal calculation, to make sure fragments synthesized for layout get assigned ordinals properly.
...
llvm-svn: 103711
2010-05-13 08:43:37 +00:00
Daniel Dunbar
e72ef430f7
MC: Create dummy fragments to avoid ever having empty sections, which simplifies layout.
...
llvm-svn: 103710
2010-05-13 08:43:34 +00:00
Daniel Dunbar
5ef1bcbb97
MC: Add MCAsmLayout::FragmentReplaced() helper function.
...
llvm-svn: 103709
2010-05-13 08:43:31 +00:00
Daniel Dunbar
5759287db9
Fix -Asserts warning.
...
llvm-svn: 103697
2010-05-13 03:50:50 +00:00
Daniel Dunbar
561f55c1af
MC: Eliminate MCSectionData::{,Address,File}Size, which can now be computed by
...
utility functions.
llvm-svn: 103695
2010-05-13 03:19:50 +00:00
Daniel Dunbar
a81966a973
MC: Switch to using explicit MCAlignFragments with OnlyAlignAddress bit instead
...
of manually doing padding/editing layout in LayoutSection().
- This probably seems like six-of-one and half-dozen of another, but there
is a method to my madness.
llvm-svn: 103693
2010-05-13 02:34:14 +00:00
Daniel Dunbar
3fc379596a
MC: Add MCAlignFragment::OnlyAlignAddress bit. This is a bit of magic that says the align fragment shouldn't contribute to the logical section size, it is will be used for cleaning up the code to handle section alignment.
...
llvm-svn: 103690
2010-05-13 01:10:26 +00:00
Daniel Dunbar
ec3a2ac5ed
MC: Add MCSectionData::AddressSize, which is the size of the address space consumed by the section. This can differ from both the section logical size, and the section size on disk (although the current code handles this without making an explicit distinction).
...
llvm-svn: 103689
2010-05-13 01:10:22 +00:00
Chris Lattner
ca57d80f83
fix rdar://7965971 and a fixme: use ParseIdentifier in
...
ParseDirectiveDarwinZerofill instead of hard coding the
check for identifier. This allows quoted symbol names to
be used.
llvm-svn: 103682
2010-05-13 00:10:34 +00:00
Daniel Dunbar
de7caed021
MC: Move MCAlignFragment::EmitNops value out of the constructor.
...
llvm-svn: 103665
2010-05-12 22:56:23 +00:00
Daniel Dunbar
cf11e2a0a5
MC: Eliminate MCZeroFillFragment, it is no longer needed.
...
llvm-svn: 103664
2010-05-12 22:51:38 +00:00
Daniel Dunbar
0040c2c393
MC: Explicitly check that only virtual fragments appear in virtual sections.
...
llvm-svn: 103663
2010-05-12 22:51:35 +00:00
Daniel Dunbar
08bcc3a6fc
MC: Switch MCFillFragment to storing total fill size instead of a count. This allows using ValueSize==0 to represent a virtual fill.
...
llvm-svn: 103662
2010-05-12 22:51:32 +00:00
Daniel Dunbar
d3f60794d8
MC: Drop support for alignment in ZeroFill fragment, we can just use
...
MCAlignFragments for this.
llvm-svn: 103661
2010-05-12 22:51:27 +00:00
Daniel Dunbar
e8f8a29de5
Simplify.
...
llvm-svn: 103651
2010-05-12 21:47:55 +00:00
Daniel Dunbar
6a495507e5
MC: Factor out MCAssembler::LayoutFragment
...
llvm-svn: 103649
2010-05-12 21:35:25 +00:00
Daniel Dunbar
43dad4fc73
MC: Tweak section layout to not relying on accumulating address value.
...
llvm-svn: 103648
2010-05-12 21:35:22 +00:00
Daniel Dunbar
7b72c3c7a0
MC: Simplify LayoutSection to just take the index of the section to layout.
...
llvm-svn: 103627
2010-05-12 17:56:47 +00:00
Daniel Dunbar
adca38558e
MC: Track section layout order explicitly, and use to simplify.
...
llvm-svn: 103616
2010-05-12 15:42:59 +00:00
Nathan Jeffords
b578f7106d
stylistic change to MCSectionCOFF::PrintSwitchToSection COMDAT handling
...
Made a stylistic changed to the code/comments related to the unsupported COMDAT selection type IMAGE_COMDAT_SELECT_LARGEST based on from Anton Korobeynikov.
llvm-svn: 103590
2010-05-12 07:36:03 +00:00
Rafael Espindola
3efc86abab
Add support for movi32 of global values to the new (MC) asm printer.
...
llvm-svn: 103576
2010-05-12 05:16:34 +00:00
Nathan Jeffords
9952bcf9f6
updated support for the COFF .linkonce
...
Now, the .linkonce directive is emitted as part of MCSectionCOFF::PrintSwitchToSection instead of AsmPrinter::EmitLinkage since it is an attribute of the section the symbol was placed into not the symbol itself.
llvm-svn: 103568
2010-05-12 04:26:09 +00:00
Daniel Dunbar
e5a79692cf
MC/Mach-O/x86_64: Add a new hook for checking whether a particular section can
...
be diced into atoms, and adjust getAtom() to take this into account.
- This fixes relocations to symbols in fixed size literal sections, for
example.
llvm-svn: 103532
2010-05-12 00:38:17 +00:00
Daniel Dunbar
a033860d55
MC/Mach-O/x86_64: Fix PCrel adjustment for x86_64, which was using the fixup
...
offset instead of the fixup address as intended.
llvm-svn: 103527
2010-05-11 23:53:11 +00:00
Daniel Dunbar
7d7b6cf3b7
MC/Mach-O: As Kevin pointed out, 'Address' is really an offset -- rename to clarify.
...
llvm-svn: 103526
2010-05-11 23:53:07 +00:00
Daniel Dunbar
e43676c164
MC/Mach-O: Fix a crash on invalid.
...
llvm-svn: 103525
2010-05-11 23:53:05 +00:00
Daniel Dunbar
7670f69e42
MC/Mach-O x86_64: Switch to using fragment atom symbol.
...
- This eliminates getAtomForAddress() (which was a linear search) and
simplifies getAtom().
- This also fixes some correctness problems where local labels at the same
address as non-local labels could be assigned to the wrong atom.
llvm-svn: 103480
2010-05-11 17:22:50 +00:00