Commit Graph

97 Commits

Author SHA1 Message Date
Daniel Dunbar
db4c7e606f MC/Mach-O/x86_64: Fix PCrel adjustment for x86_64, which was using the fixup
offset instead of the fixup address as intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 23:53:11 +00:00
Daniel Dunbar
651804c3d6 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103480 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 17:22:50 +00:00
Daniel Dunbar
a8251fac10 MC/Mach-O: Fix another mismatch with .weak_definition, we shouldn't use a
scattered relocation entry with a .weak_definition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-10 23:15:20 +00:00
Kevin Enderby
a6eeb6e226 Fix i386 relocations to Weak Definitions. The relocation entries should be
external and the item to be relocated should not have the address of the
symbol added in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103302 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07 21:44:23 +00:00
Daniel Dunbar
2d7fd61e94 MC/Mach-O: Mark absolute variable's appropriately, and add Mach-O support for
writing them.
 - <rdar://problem/7885351> integrated assembler broken for i386 objc code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103112 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05 19:01:05 +00:00
Daniel Dunbar
ae7fb0b03e MC/Mach-O/x86_64: Relocations in debug sections should use local relocations
when possible.
 - <rdar://problem/7934873>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05 17:22:39 +00:00
Daniel Dunbar
1de558b71f MC/Mach-O/x86_64: Support @GOTPCREL on symbols, even for non-PCrel relocations!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99853 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29 23:56:40 +00:00
Daniel Dunbar
e9cfd685f5 MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.
- This fixes the integrated-as nightly test regressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25 01:03:17 +00:00
Daniel Dunbar
78fcf53a18 MC/Mach-O: Remove Darwin host specific tests, we don't need them anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99100 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20 22:36:32 +00:00
Daniel Dunbar
57a49a202f MC/Mach-O: Tweak optimal_nop test to be host independent.
- This also avoids us running valgrind on /usr/bin/as, which has leaks. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99099 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20 22:36:29 +00:00
Kevin Enderby
b46b03b36f Fixed the encoding problems of the crc32 instructions. All had the Operand size
override prefix and only the r/m16 forms should have had that.  Also for variant
one, the AT&T syntax, added suffixes to all forms.  Also added the missing
64-bit form for 'CRC32 r64, r/m8'.  Plus added test cases for all forms and
tweaked one test case to add the needed suffixes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19 20:04:42 +00:00
Daniel Dunbar
602b40f0d0 MC/Mach-O/x86_64: Add relocation support.
- This is "extraordinarily" Darwin 'as' compatible. See the litany of FIXMEs littered about for more information.
 - There are a few cases which seem to clearly be 'as' bugs which I have left unsupported, and there is one cases where we diverge but should fix if it blocks diffing .o files (Darwin 'as' ends up widening a jump unnecessarily).
 - 403.gcc build, runs, and diffs equivalently to the 'as' built version now (using llvm-mc). However, it builds so slowly that I wouldn't recommend trying it quite yet. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98974 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19 18:07:55 +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
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
Chris Lattner
3b39f89006 xfail properly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98479 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14 07:55:34 +00:00
Chris Lattner
9e2dab7dbe xfail these tests temporarily to get teh buildbots back to happy land.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98476 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14 07:32:48 +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
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
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
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
Kevin Enderby
d74acb0c78 This is a patch to the assembler frontend to detect when aligning a text
section with TextAlignFillValue and calls EmitCodeAlignment() instead of
calling EmitValueToAlignment().  This allows x86 assembly code to be aligned
with optimal nops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 18:46:04 +00:00
Daniel Dunbar
197f1f0246 MCAssembler/Darwin: Add a test (on Darwin) that we assemble a bunch of
instructions exactly like 'as', and produce equivalent .o files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 22:00:15 +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
Kevin Enderby
5440f6309d Fixed MCSectionMachO::ParseSectionSpecifier to allow an attribute of "none" so
that a symbol stub section with no attributes can be parsed as in:
.section __TEXT,__picsymbolstub4,symbol_stubs,none,16


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83488 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07 20:57:20 +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
b1126e6f4a For now, only run MC tests if X86 is configured.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 06:11:15 +00:00
Daniel Dunbar
7c0a3348fb llvm-mc/Mach-O: Unique sections properly, so we don't get duplicate text
sections, etc.
 - The quick and dirty way, just clone the TargetLoweringObjectFile
   code. Eventually this should be shared... somehow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80168 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 22:49:51 +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
573e53627e llvm-mc: Fix tests for python variations in int printing, sigh.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80069 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 04:28:45 +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
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
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
605187e596 Force triple for these tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-22 09:45:43 +00:00
Daniel Dunbar
2330df6b66 llvm-mc: Improve handling of implicit alignment for magic section directives
(e.g., .objc_message_refs).
 - Just emit a .align when we see the directive; this isn't exactly what 'as'
   does but in practice it should be ok, at least for now. See FIXME.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79697 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 23:30:15 +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