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261 Commits

Author SHA1 Message Date
Rafael Espindola
daf6328eb0 Do relaxations with FT_Org fragments. Fixes the FIXME: 
// FIXME: We should compute this sooner, we don't want to recurse here, and
    // we would like to be more functional.

In MCAssembler::ComputeFragmentSize.

llvm-svn: 118080
 2010-11-02 21:38:23 +00:00
Rafael Espindola
1db6a21aff Add support for expressions in .sleb/.uleb directives. 
llvm-svn: 118023
 2010-11-02 17:22:24 +00:00
Kevin Enderby
767a9365f0 This is the last major patch to implement support for the .loc directive 
and output the dwarf line number tables.  This contains the code to emit and
encode the dwarf line tables from the previously gathered information in the
MCLineSection objects.  This contains all the details to encode the line and
address deltas into the dwarf line table.

To do this an MCDwarfLineAddrFragment has been added.

Also this moves the interface code out of Mach-O streamer into
MCDwarf so it should be useable by other object file formats.

There is now one call to be made from an MCObjectStreamer
EmitInstruction() method:
   MCLineEntry::Make(this, getCurrentSection());
to create a line entry after each instruction is assembled.

And one call call to be made from an MCObjectStreamer Finish() method:
   MCDwarfFileTable::Emit(this, DwarfLineSection);
when getContext().hasDwarfFiles() is true and is passed a object file specific
MCSection where to emit the dwarf file and the line tables.

This appears to now be correct for 32-bit targets, at least x86.  But the
relocation entries for 64-bit Darwin needs some further work which is next
up to work on.  So for now the 64-bit Mach-O target does not output the
dwarf file and line tables.

llvm-svn: 115157
 2010-09-30 16:52:03 +00:00
Rafael Espindola
3e2630deca Make it possible for the MCObjectWriter to decide if a given fixup is fully 
resolved or not. Different object files have different restrictions and
different native assemblers have different idiosyncrasies we want to emulate
for now.

Move the existing MachO logic to the new place and implement an ELF one that
gets fixups to globals right.

llvm-svn: 115131
 2010-09-30 02:22:20 +00:00
Rafael Espindola
843df9bbed Remove unused argument. 
llvm-svn: 114852
 2010-09-27 18:13:03 +00:00
Daniel Dunbar
5a7991262a MC: Add missing ')' in diagnostic. 
llvm-svn: 114717
 2010-09-24 01:58:56 +00:00
Rafael Espindola
3cfff6e0c5 Avoid some Mach-O specific alignment being done on ELF. 
llvm-svn: 114594
 2010-09-22 22:27:05 +00:00
Rafael Espindola
8a987c002e Add a InitSections method to the streamer interface. 
The ELF implementation now creates text, data and bss to match the gnu as
behavior.

The text streamer still has the old MachO specific behavior since
the testsuite checks that it will error when a directive is given
before a setting the current section for example.

A nice benefit is that -n is not required anymore when producing
ELF files.

llvm-svn: 114027
 2010-09-15 21:48:40 +00:00
Daniel Dunbar
8c7fe0e9d0 MC: Give a (lame) hard error if a .org directive would create an unreasonably 
large object file (> 1GB).

llvm-svn: 113494
 2010-09-09 16:23:33 +00:00
Daniel Dunbar
9ced206b3a MC/ELF: Allow null values in virtual sections, ELF doesn't use special 
directives for putting contents in .bss, for example.

llvm-svn: 111376
 2010-08-18 18:22:37 +00:00
Matt Fleming
5fc461afc4 Layout helper function. 
Introduce a helper method to add a section to the end of a layout. This
will be used by the ELF ObjectWriter code to add the metadata sections
(symbol table, etc) to the end of an object file.

llvm-svn: 111171
 2010-08-16 18:35:06 +00:00
Matt Fleming
162726c305 Record a symbol's size which is needed for ELF symbol tables. 
llvm-svn: 111170
 2010-08-16 18:34:31 +00:00
Daniel Dunbar
19ee08da53 MC: Initialize MCFragment::Offset, noticed by Cameron Esfahani. 
llvm-svn: 109875
 2010-07-30 18:32:09 +00:00
Daniel Dunbar
1c35389c03 MC: Put back the MCFragment vtable, so subclasses are destroyed properly (duh). 
llvm-svn: 109649
 2010-07-28 20:28:45 +00:00
Reid Kleckner
3a876ca187 Initial modifications to MCAssembler and TargetMachine for the MCJIT. 
Patch by Olivier Meurant!

llvm-svn: 109080
 2010-07-22 05:58:53 +00:00
Duncan Sands
84321cc550 The variable ValueSize is set to 1 on both code paths, and then 
ignored!  Remove it.

llvm-svn: 107138
 2010-06-29 13:30:08 +00:00
Daniel Dunbar
2c6d6693e2 MC: Simplify MCAssembler::isSymbolLinkerVisible to only take an MCSymbol. 
llvm-svn: 106142
 2010-06-16 20:04:29 +00:00
Dan Gohman
940f8f3947 Don't call flush() at a library level which isn't checking for errors 
and doesn't know where the output is going.

llvm-svn: 105274
 2010-06-01 16:31:34 +00:00
Daniel Dunbar
c53aec29c9 MC: When running with -mc-relax-all, we can eagerly relax instructions and avoid creating unnecessary MCInstFragments. 
llvm-svn: 104736
 2010-05-26 20:37:03 +00:00
Daniel Dunbar
1b8e1aafae MC: Change RelaxInstruction to only take the input and output instructions. 
llvm-svn: 104713
 2010-05-26 18:15:06 +00:00
Daniel Dunbar
77240e2337 MC: Simplify MayNeedRelaxation to not provide the fixups, so we can query it 
before encoding.

llvm-svn: 104707
 2010-05-26 17:45:29 +00:00
Daniel Dunbar
87dcbd1ee5 MC: Eliminate MCAsmFixup, replace with MCFixup. 
llvm-svn: 104699
 2010-05-26 15:18:56 +00:00
Daniel Dunbar
55c1bf55fe MC: Use accessors for access to MCAsmFixup. 
llvm-svn: 104697
 2010-05-26 15:18:31 +00:00
Daniel Dunbar
a06aa279f4 MC: Eliminate MCFragment vtable, which was unnecessary. 
llvm-svn: 104689
 2010-05-26 06:50:57 +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
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