Commit Graph

188 Commits

Author SHA1 Message Date
Daniel Dunbar eec0f32eea [MC/Mach-O] Add support for linker options in Mach-O files.
llvm-svn: 172779
2013-01-18 01:26:07 +00:00
Daniel Dunbar 16004b8324 [MC/Mach-O] Add AsmParser support for .linker_option directive.
llvm-svn: 172778
2013-01-18 01:25:48 +00:00
Kevin Enderby e82ada6983 We want the dwarf AT_producer for assembly source files to match clang's
AT_producer.  Which includes clang's version information so we can tell
which version of the compiler was used.

This is the first of two steps to allow us to do that.  This is the llvm-mc
change to provide a method to set the AT_producer string.  The second step,
coming soon to a clang near you, will have the clang driver pass the value
of getClangFullVersion() via an flag when invoking the integrated assembler
on assembly source files.

rdar://12955296

llvm-svn: 172630
2013-01-16 17:46:23 +00:00
David Sehr 05176cad21 Correct ARM NOP encoding
The encoding of NOP in ARMAsmBackend.cpp is missing a trailing zero, which
causes the emission of a coprocessor instruction rather than "mov r0, r0"
as indicated in the comment.  The test also checks for the wrong encoding.

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/157919.html

llvm-svn: 169420
2012-12-05 21:01:27 +00:00
David Sehr 1fa8d37efc Test commit.
llvm-svn: 169410
2012-12-05 19:47:56 +00:00
Eli Bendersky c3189ad91e A test in thid directory was not being run because lit.local.cfg didn't
include .ll files. Fix that.

llvm-svn: 169283
2012-12-04 17:00:11 +00:00
Eric Christopher 710c374dfe The section is .debug_line.
llvm-svn: 168666
2012-11-27 01:40:36 +00:00
Kevin Enderby 27121c1543 Fix for PR14264 cause by commit r167237 which did not take into account a
possible buffer change with a .macro directive.

rdar://12637628

llvm-svn: 167408
2012-11-05 21:55:41 +00:00
Kevin Enderby 4eaf8ef5cb Add support for generating dwarf debugging info with assembly files
run through the 'C' preprocessor.  That is pick up the file name
and line numbers from the cpp hash file line comments for the
dwarf file and line numbers tables.

rdar://9275556

llvm-svn: 167237
2012-11-01 17:31:35 +00:00
Jim Grosbach 745c52dd4e MachO: direct-to-object attribute for data-in-code markers.
The target backend can support data-in-code load commands even when
the assembler doesn't, or vice-versa. Allow targets to opt-in for
direct-to-object.

PR13973.

llvm-svn: 164974
2012-10-01 22:20:54 +00:00
Jim Grosbach c03a0c241e X86_32: Large Symbol+Offset relocations.
If the offset is more than 24-bits, it won't fit in a scattered
relocation offset field, so we fall back to using a non-scattered
relocation.

rdar://12358909

llvm-svn: 164724
2012-09-26 21:27:45 +00:00
Jim Grosbach df8ed71839 ARM: Darwin BL/BLX relocations to out-of-range symbols.
When a BL/BLX references a symbol in the same translation unit that is
out of range, use an external relocation. The linker will use this to
generate a branch island rather than a direct reference, allowing the
relocation to resolve correctly.

rdar://12359919

llvm-svn: 164615
2012-09-25 18:07:17 +00:00
Jim Grosbach b7b750d480 Assembler: Darwin variables defined via .set are no-dead-strip.
For gas compatibility.

rdar://12219394

llvm-svn: 163854
2012-09-13 23:11:31 +00:00
Bill Wendling ce4fe41d21 Add `.pushsection', `.popsection', and `.previous' directives to Darwin ASM.
There are situations where inline ASM may want to change the section -- for
instance, to create a variable in the .data section. However, it cannot do this
without (potentially) restoring to the wrong section. E.g.:

  asm volatile (".section __DATA, __data\n\t"
                ".globl _fnord\n\t"
                "_fnord: .quad 1f\n\t"
                ".text\n\t"
                "1:" :::);

This may be wrong if this is inlined into a function that has a "section"
attribute. The user should use `.pushsection' and `.popsection' here instead.

The addition of `.previous' is added for completeness.
<rdar://problem/12048387>

llvm-svn: 161477
2012-08-08 06:30:30 +00:00
Kevin Enderby 5c490f1b8f Fix a bug in ARMMachObjectWriter::RecordRelocation() in ARMMachObjectWriter.cpp
where the other_half of the movt and movw relocation entries needs to get set
and only with the 16 bits of the other half.

rdar://10038370

llvm-svn: 160978
2012-07-30 18:46:15 +00:00
Jim Grosbach 4b63d2ae1d Refactor data-in-code annotations.
Use a dedicated MachO load command to annotate data-in-code regions.
This is the same format the linker produces for final executable images,
allowing consistency of representation and use of introspection tools
for both object and executable files.

Data-in-code regions are annotated via ".data_region"/".end_data_region"
directive pairs, with an optional region type.

data_region_directive := ".data_region" { region_type }
region_type := "jt8" | "jt16" | "jt32" | "jta32"
end_data_region_directive := ".end_data_region"

The previous handling of ARM-style "$d.*" labels was broken and has
been removed. Specifically, it didn't handle ARM vs. Thumb mode when
marking the end of the section.

rdar://11459456

llvm-svn: 157062
2012-05-18 19:12:01 +00:00
Kevin Enderby badd100c26 Fixed a bug in llvm-objdump when disassembling using -macho option for a binary
containing no symbols.  Fixed the crash and fixed it not disassembling anything.

llvm-svn: 157031
2012-05-18 00:13:56 +00:00
Kevin Enderby a414bcc0e3 Add a test case for r156840, a fix to llvm-objdump when disassembling using
-macho to disassemble the last symbol to the end of the section.

llvm-svn: 156850
2012-05-15 20:20:50 +00:00
Kevin Enderby 914223010c Fix issues with the ARM bl and blx thumb instructions and the J1 and J2 bits
for the assembler and disassembler.  Which were not being set/read correctly
for offsets greater than 22 bits in some cases.

Changes to lib/Target/ARM/ARMAsmBackend.cpp from Gideon Myles!

llvm-svn: 156118
2012-05-03 22:41:56 +00:00
Eli Bendersky f33086052d Continue cleanup of LIT, getting rid of the remaining artifacts from dejagnu
* Removed test/lib/llvm.exp - it is no longer needed 
* Deleted the dg.exp reading code from test/lit.cfg. There are no dg.exp files
  left in the test suite so this code is no longer required. test/lit.cfg is
  now much shorter and clearer 
* Removed a lot of duplicate code in lit.local.cfg files that need access to
  the root configuration, by adding a "root" attribute to the TestingConfig
  object. This attribute is dynamically computed to provide the same
  information as was previously provided by the custom getRoot functions. 
* Documented the config.root attribute in docs/CommandGuide/lit.pod

llvm-svn: 153408
2012-03-25 09:02:19 +00:00
Jim Grosbach 997614f597 ARM non-scattered MachO relocations for movw/movt.
Needed when building -mdynamic-no-pic code.

rdar://10459256

llvm-svn: 153097
2012-03-20 17:25:45 +00:00
Richard Trieu 37ddc0fab6 Fix flags for test in MC/MachO/ARM/empty-function-nop.ll
llvm-svn: 151778
2012-03-01 00:29:09 +00:00
Jim Grosbach 617f84ddbd ARM implement TargetInstrInfo::getNoopForMachoTarget()
Without this hook, functions w/ a completely empty body (including no
epilogue) will cause an MCEmitter assertion failure.

For example,
define internal fastcc void @empty_function() {
  unreachable
}

rdar://10947471

llvm-svn: 151673
2012-02-28 23:53:30 +00:00
Eli Bendersky 924f9a671d Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.

llvm-svn: 150664
2012-02-16 06:28:33 +00:00
Kevin Enderby e1a12cf3ee Fixed a crash in llvm-mc for Mach-O when a symbol difference expression uses a
symbol from an assignment.  In this case the symbol did not have a fragment so
MCObjectWriter::IsSymbolRefDifferenceFullyResolved() should not have been
calling IsSymbolRefDifferenceFullyResolvedImpl() with a NULL fragment and should
just have returned false in that case.

llvm-svn: 149442
2012-01-31 23:02:57 +00:00
Jim Grosbach 35bc8f9159 ARM Darwin symbol ref differences w/o subsection-via-symbols.
When not using subsections via symbols, the assembler can resolve
symbol differences (including pcrel references) to non-local
labels at assembly time, not just those in the same atom.

llvm-svn: 148865
2012-01-24 21:45:25 +00:00
Jim Grosbach 29ecaa944d Add testcase.
llvm-svn: 148454
2012-01-19 01:36:59 +00:00
Jim Grosbach cb80eb2e75 Thumb2 relaxation for LDR(literal).
If the fixup is out of range for the Thumb1 instruction, relax it
to the Thumb2 encoding instead.

rdar://10711829

llvm-svn: 148424
2012-01-18 21:54:16 +00:00
Jim Grosbach 4045507fea MC tweak symbol difference resolution for non-local symbols.
When the non-local symbol in the expression is in the same fragment
as the second symbol, the assembler can still evaluate the expression
without needing a relocation.

For example, on ARM:
_foo:
	ldr lr, (_foo - 4)

rdar://10348687

llvm-svn: 148341
2012-01-17 22:14:39 +00:00
Jim Grosbach 354f48f201 Tidy up.
llvm-svn: 148339
2012-01-17 22:03:42 +00:00
Kevin Enderby 8d4a2204b7 Various crash reporting tools have a problem with the dwarf generated for
assembly source when it generates the TAG_subprogram dwarf debug info for
the labels that have nothing between them as in this bit of assembly source:

% cat ZeroLength.s 
_func1:
_func2:
 nop

One solution would be to not emit the subsequent labels with the same address
and use the next label with a different address or the end of the section for
the AT_high_pc value of the TAG_subprogram.

Turns out in llvm-mc it is not possible in all cases to determine of two
symbols have the same value at the point we put out the TAG_subprogram dwarf
debug info.

So we will have llvm-mc instead of putting out TAG_subprogram's put out
DW_TAG_label's.  And the DW_TAG_label does not have a AT_high_pc value which
avoids the problem.

This commit is only the functional change to make the diffs clear as to what is
really being changed.  The next commit will be to clean up the names of such
things like MCGenDwarfSubprogramEntry to something like MCGenDwarfLabelEntry.

rdar://10666925

llvm-svn: 147860
2012-01-10 17:52:29 +00:00
Nick Lewycky 86ffb03c79 Don't rely on a particular version string for llvm.
llvm-svn: 146456
2011-12-13 00:34:14 +00:00
Chandler Carruth 1d76d4196a Don't assume things about the exact details of the LLVM version number,
such as what VCS information is attached.

llvm-svn: 146333
2011-12-10 21:40:31 +00:00
Kevin Enderby e7739d484f The second part of support for generating dwarf for assembly source files. This
generates the dwarf Compile Unit DIE and a dwarf subprogram DIE for each
non-temporary label.

The next part will be to get the clang driver to enable this when assembling
a .s file.  rdar://9275556

llvm-svn: 146262
2011-12-09 18:09:40 +00:00
Jim Grosbach d6ae4ba002 Darwin assembler improved relocs when w/o subsections_via_symbols.
When the file isn't being built with subsections-via-symbols, symbol
differences involving non-local symbols can be resolved more aggressively.
Needed for gas compatibility.

llvm-svn: 146054
2011-12-07 19:46:59 +00:00
Jim Grosbach a4337ced68 Tidy up. Move MachO tests to MachO directory.
llvm-svn: 146038
2011-12-07 17:50:28 +00:00
NAKAMURA Takumi 51416d5f00 test/MC: Introduce MC/MachO/ARM, and relocate relax-thumb2-branches.s into it.
FIXME: Restore more other arch-dependent MachO tests. (eg. r126401 and r133856)
llvm-svn: 145925
2011-12-06 06:48:26 +00:00
NAKAMURA Takumi 5bdc0fbabd test/MC: Move relax-thumb2-branches.s from MC/MachO/ to MC/ARM.
MC/MachO assumes x86.

llvm-svn: 145916
2011-12-06 03:56:05 +00:00
Jim Grosbach 9105085b4a Fix ARM handling of tBcc branch relaxation.
rdar://10069056

llvm-svn: 145885
2011-12-06 01:08:19 +00:00
Kevin Enderby 82ed3be1fb Fixed a bug in the code to create a dwarf file and directory table entires when
it is separating the directory part from the basename of the FileName.  Noticed 
that this:

  .file 1 "dir/foo"

when assembled got the two parts switched.  Using the Mac OS X dwarfdump tool
it can be seen easily:

% dwarfdump -a a.out
include_directories[  1] = 'foo'
                Dir  Mod Time   File Len   File Name
                ---- ---------- ---------- ---------------------------
file_names[  1]    1 0x00000000 0x00000000 dir
...

Which should be:
...
include_directories[  1] = 'dir'
                Dir  Mod Time   File Len   File Name
                ---- ---------- ---------- ---------------------------
file_names[  1]    1 0x00000000 0x00000000 foo

llvm-svn: 143521
2011-11-01 23:39:05 +00:00
Kevin Enderby 7b46bb8e32 Fix a Darwin x86_64 special case of a jmp to a temporary symbol from an atom
without a base symbol that must not have a relocation entry.

llvm-svn: 139316
2011-09-08 20:53:44 +00:00
Evan Cheng eee864520c Some autoconf tests use module level inline asm to test compiler's handling of
.cfi_startproc. e.g. libffi:

 $ cat confopt.c 
asm (".cfi_startproc\n\t.cfi_endproc");

int main () { return 0; }

Teach MC / dwarf emission to handle these cfi directives which essentially
create an empty frame.

rdar://10017184

llvm-svn: 138504
2011-08-24 22:31:37 +00:00
Benjamin Kramer 91ea511436 MachOWriter: Don't crash on fixups with arithmetic, emit a relocation instead. This matches what as does.
llvm-svn: 137414
2011-08-12 01:51:29 +00:00
Jim Grosbach 8fbb89ffa4 Move ARM-specific test to ARM directory.
Hopefully make the x86-target-only Windows bots happy.

llvm-svn: 133856
2011-06-25 01:53:17 +00:00
Jim Grosbach 045e26166a Testcase for r133818
llvm-svn: 133823
2011-06-24 20:59:01 +00:00
Rafael Espindola 99f6735532 On MachO, unlike ELF, there should be no relocation to produce the CIE pointer.
llvm-svn: 131149
2011-05-10 20:59:42 +00:00
Daniel Dunbar 72032861c6 MCAsmLayout: Add support for computing the symbol offset of variables. Not
currently used, because variables don't get reported as being "defined".

llvm-svn: 130524
2011-04-29 18:20:20 +00:00
Daniel Dunbar bea7b93c88 MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection().
llvm-svn: 130523
2011-04-29 18:20:17 +00:00
Chris Lattner 0ab5e2cded Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558
2011-04-15 05:18:47 +00:00
Daniel Dunbar 4ee0d03274 MC: Add support for disabling "temporary label" behavior. Useful for debugging
on Darwin.

llvm-svn: 128430
2011-03-28 22:49:15 +00:00
Daniel Dunbar f1d62cfc8f MC/Mach-O: Fix regression introduced in r126127, this assignment shouldn't have
been removed.

llvm-svn: 127812
2011-03-17 16:25:24 +00:00
Devang Patel b52040da17 Move arch specific tests in arch specific directories.
llvm-svn: 126401
2011-02-24 19:06:27 +00:00
Daniel Dunbar ab14a6f174 MC/Mach-O/Thumb: Set the thumb bit in the symbol table.
llvm-svn: 122630
2010-12-29 14:14:06 +00:00
Daniel Dunbar a895c69431 MC/Mach-O/Thumb: Select appropriate relocation types for Thumb.
llvm-svn: 122583
2010-12-27 14:49:49 +00:00
Daniel Dunbar 7f2bb4dcae MC/Mach-O/ARM: Start handling some Thumb branches.
llvm-svn: 122547
2010-12-24 16:41:46 +00:00
Daniel Dunbar ac8173cf71 MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups.
llvm-svn: 122441
2010-12-22 21:26:43 +00:00
Rafael Espindola 1af01a69d4 Add reduced test from 8845.
llvm-svn: 122438
2010-12-22 21:15:13 +00:00
Daniel Dunbar 45140d2efc MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

llvm-svn: 122412
2010-12-22 16:52:19 +00:00
Daniel Dunbar 9ccf843a61 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations.
llvm-svn: 122407
2010-12-22 16:19:24 +00:00
Daniel Dunbar 137d422e50 MC/Expr: Implemnt more aggressive folding during symbol evaluation using
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away
something like:
--
_a:
...
L0:
...
L1:
...
.long (L1 - L0) / 2
--

llvm-svn: 122043
2010-12-17 05:50:33 +00:00
Rafael Espindola 844f6b6cfb Relax alignment fragments.
With this we don't need the EffectiveSize field anymore. Without that field
LayoutFragment only updates offsets and we don't need to invalidate the
current fragment when it is relaxed (only the ones following it).

This is also a very small improvement in the accuracy of the layout info as
we now use the after relaxation size immediately.

llvm-svn: 121857
2010-12-15 08:45:53 +00:00
Rafael Espindola 8911d03504 Patch by David Meyer to avoid a O(N^2) behaviour when relaxing fragments.
Since we now don't update addresses so early, we might relax a bit more than
we need to. This is simillar to the issue in PR8467.

llvm-svn: 121856
2010-12-15 07:39:29 +00:00
Rafael Espindola e78d3b38de Fix absolute recording of differences of symbols in two sections. Reduced from ctor_dtor_count-2.cpp.
llvm-svn: 121152
2010-12-07 17:12:32 +00:00
Rafael Espindola bdbe5a712d Fix relocations with weak definitions.
llvm-svn: 121114
2010-12-07 05:57:28 +00:00
Rafael Espindola 2eabaae459 Fix pcrel relocations that cross sections.
llvm-svn: 121107
2010-12-07 03:50:14 +00:00
Rafael Espindola a2421ec705 Fix a crash reduced from gcc produced assembly.
llvm-svn: 121085
2010-12-07 01:09:54 +00:00
Rafael Espindola 44bbe36de6 Second try at making direct object emission produce the same results
as llc + llvm-mc. This time ELF is not changed and I tested that llvm-gcc
bootstrap on darwin10 using darwin9's assembler and linker.

llvm-svn: 121006
2010-12-06 17:27:56 +00:00
Rafael Espindola 1c8ac8f027 There are two reasons why we might want to use
foo = a - b
.long foo
instead of just
.long a - b

First, on darwin9 64 bits the assembler produces the wrong result. Second,
if "a" is the end of the section all darwin assemblers (9, 10 and mc) will not
consider a - b to be a constant but will if the dummy foo is created.

Split how we handle these cases. The first one is something MC should take care
of. The second one has to be handled by the caller.

llvm-svn: 120889
2010-12-04 03:21:47 +00:00
Rafael Espindola 1048e75fb9 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid
doing that if the target is darwin10 or newer.

This fixes
*) Direct object emission was producing objects without the workaround on
   darwin9.
*) Assembly printing was producing objects with the workaround on linux.

llvm-svn: 120866
2010-12-04 00:31:13 +00:00
Daniel Dunbar 1440fd3539 macho-dump: Fix typo.
llvm-svn: 120185
2010-11-27 04:00:06 +00:00
Rafael Espindola 7c2acd022e Use multiple 0x66 prefixes so that all nops up to 15 bytes are a single instruction.
llvm-svn: 120147
2010-11-25 17:14:16 +00:00
Kevin Enderby 8be14414f6 Added support for the Mach-O .symbol_resolver directive. rdar://8673046
llvm-svn: 119816
2010-11-19 18:39:33 +00:00
Rafael Espindola d1993eb2a4 Change the 11 byte nop to be a single instruction.
llvm-svn: 119286
2010-11-15 23:10:30 +00:00
Daniel Dunbar 35a7a0ee2e MC/Mach-O/i386: Fix a crash in relocation handling.
llvm-svn: 114176
2010-09-17 15:21:50 +00:00
Rafael Espindola 2833e392ab Change section_data dumping to print hex numbers instead of using
python's %r.

llvm-svn: 113685
2010-09-11 15:25:58 +00:00
Chris Lattner 4703cb4a96 fix the encoding of the "jump on *cx" family of instructions,
rdar://8061602

llvm-svn: 113343
2010-09-08 04:30:51 +00:00
Kevin Enderby 9738f64bd9 MC/X86: Add aliases for Jcc variants.
llvm-svn: 104890
2010-05-27 21:33:19 +00:00
Eric Christopher 8ae57895f5 Add a quick test of relocations.
llvm-svn: 104794
2010-05-27 00:53:40 +00:00
Eric Christopher 19a4b843cc Add support for initialized global data for darwin tls. Update comments
and testcases accordingly.

llvm-svn: 104635
2010-05-25 21:28:50 +00:00
Eric Christopher 63476ddae6 A more combo tls testcase.
llvm-svn: 104163
2010-05-19 21:19:42 +00:00
Eric Christopher b95493c495 Few more simple tls testcases.
llvm-svn: 104148
2010-05-19 20:35:15 +00:00
Eric Christopher 7f173d1d27 Quick test to make sure we're emitting the tbss section correctly.
llvm-svn: 104063
2010-05-18 21:40:20 +00:00
Kevin Enderby 53e0631516 Fixed the problem with a branch to "0b" that was not parsed by llvm-mc
correctly.  The Lexer was incorrectly eating the newline casusing it to branch
to address 0.  Updated the test case to use a "0:" label and a branch to "0b".

llvm-svn: 104038
2010-05-18 17:51:35 +00:00
Daniel Dunbar d5563f420a MC/Mach-O: Implement support for setting indirect symbol table offset in section header.
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
Kevin Enderby 0510b48fd9 Added support in MC for Directional Local Labels.
llvm-svn: 103989
2010-05-17 23:08:19 +00:00
Daniel Dunbar bb166bed40 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 b7b796cc11 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
Daniel Dunbar 0211a96989 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 2493ddfe42 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
Daniel Dunbar e35c88d5ad MC/Mach-O: Add another zerofill test to improve coverage.
llvm-svn: 103691
2010-05-13 01:10:28 +00:00
Daniel Dunbar ba2f4c3884 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 53ce0e12d8 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 3937e28da0 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
Daniel Dunbar 75778984f9 MC/Mach-O: Fix another mismatch with .weak_definition, we shouldn't use a
scattered relocation entry with a .weak_definition.

llvm-svn: 103443
2010-05-10 23:15:20 +00:00
Kevin Enderby 51bed9c870 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.

llvm-svn: 103302
2010-05-07 21:44:23 +00:00
Daniel Dunbar f3a53baf00 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

llvm-svn: 103112
2010-05-05 19:01:05 +00:00
Daniel Dunbar 027fa5f31c MC/Mach-O/x86_64: Relocations in debug sections should use local relocations
when possible.
 - <rdar://problem/7934873>

llvm-svn: 103092
2010-05-05 17:22:39 +00:00
Daniel Dunbar c95156262d MC/Mach-O/x86_64: Support @GOTPCREL on symbols, even for non-PCrel relocations!
llvm-svn: 99853
2010-03-29 23:56:40 +00:00
Daniel Dunbar 5caf2ff561 MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.
- This fixes the integrated-as nightly test regressions.

llvm-svn: 99466
2010-03-25 01:03:17 +00:00
Daniel Dunbar 98055cc154 MC/Mach-O: Remove Darwin host specific tests, we don't need them anymore.
llvm-svn: 99100
2010-03-20 22:36:32 +00:00