fd05785324
Simplify the handling of pcrel relocations on ELF. Now we do the right thing
...
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.
This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.
llvm-svn: 130634
2011-05-01 03:50:49 +00:00
b80875edee
Micro optimization and improved similarity with gas' output:
...
When two section names share a suffix, reuse the entry in shstrtab.
llvm-svn: 129115
2011-04-07 23:21:52 +00:00
1557fd6d39
Write the section table and the section data in the same order that
...
gun as does. This makes it a lot easier to compare the output of both
as the addresses are now a lot closer.
llvm-svn: 127972
2011-03-20 18:44:20 +00:00
771911e28b
Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them.
...
llvm-svn: 126942
2011-03-03 14:52:12 +00:00
d92d17bf67
PR9352: Always emit a relocation for weak symbols. Not emitting relocations
...
for calls to weak symbols with a definition has the appearance of working
with LLVM-generated code because weak symbol definitions are put in their
own sections.
llvm-svn: 126933
2011-03-03 07:24:36 +00:00
30a52dec93
Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class.
...
llvm-svn: 126686
2011-02-28 21:45:04 +00:00
9e18e96264
Put in the symbol table symbols only used in a .globl statement.
...
Fixes PR9292.
llvm-svn: 126330
2011-02-23 20:22:07 +00:00
37d5484d18
Handle FK_PCRel_1 and add a test case for this and FK_PCRel_4.
...
llvm-svn: 126157
2011-02-21 23:25:41 +00:00
490d02a334
Gas is very inconsistent about when a relaxation/relocation is needed. Do
...
the right thing and stop trying to copy it. Fixes PR8944.
llvm-svn: 125648
2011-02-16 03:25:55 +00:00
202630c6ee
Teach ARM/MC/ELF about gcc compatible reloc output to get past odd linkage
...
failures with relocations.
The code committed is a first cut at compatibility for emitted relocations in
ELF .o.
Why do this? because existing ARM tools like emitting relocs symbols as
explicit relocations, not as section-offset relocs.
Result is that with these changes,
1) relocs are now substantially identical what to gcc outputs.
2) larger apps (including many spec2k tests) compile, cross-link, and pass
Added reminder fixme to tests for future conversion to .s form.
llvm-svn: 124996
2011-02-07 01:11:15 +00:00
4761fba833
Teach ARM/MC/ELF about EF_ARM_EABI_VERSION. The magic number is set to
...
5 to match the current doc.
Added FIXME reminder Make it really configurable later.
llvm-svn: 124899
2011-02-04 21:41:11 +00:00
d2e2f56c36
Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps.
...
(yes, this is different from R_ARM_CALL)
- Adds a new method getARMBranchTargetOpValue() which handles the
necessary distinction between the conditional and unconditional br/bl
needed for ARM/ELF
At least for ARM mode, the needed fixup for conditional versus unconditional
br/bl is identical, but the ARM docs and existing ARM tools expect this
reloc type...
Added a few FIXME's for future naming fixups in ARMInstrInfo.td
llvm-svn: 124895
2011-02-04 19:47:15 +00:00
b3eca9bb71
Add support for the --noexecstack option.
...
llvm-svn: 124077
2011-01-23 17:55:27 +00:00
4b7b7fba38
Delay the creation of eh_frame so that the user can change the defaults.
...
Add support for SHT_X86_64_UNWIND.
llvm-svn: 124059
2011-01-23 05:43:40 +00:00
0e7e34e476
Remove more duplicated code.
...
llvm-svn: 124056
2011-01-23 04:43:11 +00:00
d4a5c05c97
Completed :lower16: / :upper16: support for movw / movt pairs on Darwin.
...
- Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first.
- Added support for Thumb2 :lower16: and :upper16: fix up.
- Added :upper16: and :lower16: relocation support to mach-o object writer.
llvm-svn: 123424
2011-01-14 02:38:49 +00:00
39e36e7ab4
Style clean up - break up the breaks.
...
llvm-svn: 123347
2011-01-13 00:07:51 +00:00
9c5b65d289
1. Support ELF pcrel relocations for movw/movt:
...
R_ARM_MOVT_PREL and R_ARM_MOVW_PREL_NC.
2. Fix minor bug in ARMAsmPrinter - treat bitfield flag as a bitfield, not an enum.
3. Add support for 3 new elf section types (no-ops)
llvm-svn: 123294
2011-01-12 00:19:25 +00:00
3686473578
Fix PR8878.
...
llvm-svn: 122658
2011-01-01 19:05:35 +00:00
8fc59a682f
Handle reloc_riprel_4byte_movq_load. Should make the bots happy.
...
llvm-svn: 122579
2010-12-27 02:03:24 +00:00
2ac8355ecd
Add support for the same encodings of the personality function that gnu as
...
supports.
llvm-svn: 122577
2010-12-27 00:36:05 +00:00
9ae2d05d45
Add support for @note. Patch by Jörg Sonnenberger.
...
llvm-svn: 122568
2010-12-26 21:30:59 +00:00
0f8abeba1d
Merge IsFixupFullyResolved and IsSymbolRefDifferenceFullyResolved. We now
...
have a single point where targets test if a relocation is needed.
llvm-svn: 122549
2010-12-24 21:22:02 +00:00
73c0ae77ca
Simplify the handling of .size expressions.
...
llvm-svn: 122404
2010-12-22 16:03:00 +00:00
55184ddd35
Set the value of absolute symbols.
...
llvm-svn: 122268
2010-12-20 21:14:39 +00:00
b403e098a1
Merge isAbsolute into IsSymbolRefDifferenceFullyResolved.
...
llvm-svn: 122148
2010-12-18 06:27:54 +00:00
8396dd0893
Remove the MCObjectFormat class.
...
llvm-svn: 122147
2010-12-18 05:37:28 +00:00
fdaae0d16f
Move some data to the TargetWriter.
...
llvm-svn: 122134
2010-12-18 03:27:34 +00:00
d11460a65b
Store and free the TargetObjectWriter.
...
llvm-svn: 122070
2010-12-17 18:01:31 +00:00
6b5e56c2b1
Stub out explicit MCELFObjectTargetWriter interface.
...
llvm-svn: 122067
2010-12-17 17:45:22 +00:00
f0e24d426a
Move createELFObjectWriter to its own header.
...
llvm-svn: 122064
2010-12-17 16:59:53 +00:00
df63335844
Use getFixupKindInfo to implement isFixupKindPCRel, ELF version.
...
llvm-svn: 122050
2010-12-17 07:28:17 +00:00
f2adf782ab
MC/ObjectWriter: Add a new IsSymbolRefDifferenceFullyResolved target format specific hook.
...
- Currently just has stub implementations for Mach-O, ELF, and COFF.
llvm-svn: 122037
2010-12-17 04:54:54 +00:00
50269280f8
MC/Assembler: Strip out object writer arguments, now that it is always available
...
-- and remove FIXME asking for the same!
llvm-svn: 122032
2010-12-17 02:45:59 +00:00
4c1386add9
1. ARM/MC/ELF: A few more ELF relocs for .o
...
2. Fixed EmitLocalCommonSymbol for ELF (Yes, they exist. :)
Test added.
llvm-svn: 121951
2010-12-16 03:12:17 +00:00
0e909c5f9c
First cut of ARM/MC/ELF PIC relocations.
...
Test has fixme, to move to .s -> .o test when AsmParser works better.
llvm-svn: 121732
2010-12-13 23:16:07 +00:00
e119da1146
Thumb unconditional branch binary encoding. rdar://8754994
...
llvm-svn: 121496
2010-12-10 18:21:33 +00:00
68b27eb9d1
Rename CB/CBZ specific fixup accordingly.
...
llvm-svn: 121404
2010-12-09 19:50:12 +00:00
c79c5f6e8c
ARM/MC/ELF TPsoft is now a proper pseudo inst.
...
Added test to check bl __aeabi_read_tp gets emitted properly for ELF/ASM
as well as ELF/OBJ (including fixup)
Also added support for ELF::R_ARM_TLS_IE32
llvm-svn: 121312
2010-12-08 23:14:44 +00:00
a7d6aa902a
Support the "target" encodings for the CB[N]Z instructions.
...
llvm-svn: 121308
2010-12-08 23:01:43 +00:00
8a6449c46e
Add support for loading from a constant pool.
...
llvm-svn: 121226
2010-12-08 01:57:09 +00:00
93e3cf0ebd
Sorry for such a large commit. The summary is that only MachO cares about the
...
actuall addresses in a .o file, so it is better to let the MachO writer compute
it.
This is good for two reasons. First, areas that shouldn't care about
addresses now don't have access to it. Second, the layout of each section
is independent. I should use this in a subsequent commit to speed it up.
Most of the patch is just removing the section address computation. The two
interesting parts are the change on how we handle padding in the end
of sections and how MachO can get the address of a-b when a and b are in
different sections.
Since now the expression evaluation normally doesn't know the section address,
it will think that a-b needs relocation and let the MachO writer know. Once
it has computed the section addresses, it calls back the expression evaluation
with the section addresses to resolve these expressions.
The remaining problem is the handling of padding. Currently it will create
a special alignment fragment at the end. Since that fragment doesn't update
the alignment of the section, it needs the real address to be computed.
Since now the layout will not compute a-b with a and b in different sections,
the only effect that the special alignment fragment has is update the
address size of the section. This can also be done by the MachO writer.
llvm-svn: 121076
2010-12-07 00:27:36 +00:00
9e1994698d
Add fixup for Thumb1 BL/BLX instructions.
...
llvm-svn: 121072
2010-12-06 23:57:07 +00:00
495c2bb9a6
Refactor ELFObjectWriter.
...
+ ARM/X86/MBlaze now share a common RecordRelocation
+ ARM/X86/MBlaze arch specific routines are limited to GetRelocType()
llvm-svn: 121043
2010-12-06 21:57:34 +00:00
baf2f3b3eb
Remove the getAddress getter, initialize Ordinal in the constructor and use
...
that on the ELF writer to detect a section we created.
llvm-svn: 120981
2010-12-06 03:48:09 +00:00
e7284c3671
Add a getSymbolOffset method and use it in the ELF writer.
...
llvm-svn: 120977
2010-12-06 02:57:26 +00:00
60ebca9aaf
The sections that the ELF object writer has to create are very simple and
...
contain only data. Handle them specially instead of using AddSectionToTheEnd.
This moves a hack from the generic assembler to the elf writer. It is also
a bit faster and should make other improvements easier.
llvm-svn: 120683
2010-12-02 03:09:06 +00:00
ce2bd8d05f
Add support for binary encoding of ARM 'adr' instructions referencing constant
...
pool entries (LEApcrel pseudo). Ongoing saga of rdar://8542291.
llvm-svn: 120635
2010-12-02 00:28:45 +00:00
943fb60b1f
Add correct encodings for STRD and LDRD, including fixup support. Additionally, update these to unified syntax.
...
llvm-svn: 120589
2010-12-01 19:18:46 +00:00
5695098c4c
Fix a mised reloc rename spot.
...
llvm-svn: 120585
2010-12-01 19:02:26 +00:00
29805961d8
ARM/MC/ELF relocation "hello world" for movw/movt.
...
Lifted adjustFixupValue() from Darwin for sharing w ELF.
Test added
TODO:
refactor ELFObjectWriter::RecordRelocation more.
Possibly share more code with Darwin?
Lots more relocations...
llvm-svn: 120534
2010-12-01 02:40:06 +00:00
8a3a7923eb
Define generic 1, 2 and 4 byte pc relative relocations. They are common
...
and at least the 4 byte one will be needed to implement the .cfi_* directives.
llvm-svn: 120240
2010-11-28 14:17:56 +00:00
9f75d5df0b
Behave a bit more like gnu as and use the symbol (instead of the section)
...
for any relocation to a symbol defined in a tls section.
llvm-svn: 120121
2010-11-24 21:57:39 +00:00
708ac4d6ad
Relocate with the symbol if the relocation is of kind NTPOFF.
...
Patch by David Meyer, I added the test.
llvm-svn: 120104
2010-11-24 19:23:50 +00:00
767a1e9adc
Fixed some style issues (no _, no spc after !)
...
llvm-svn: 119986
2010-11-22 22:05:16 +00:00
16b75262c4
Make the <ARCH>ELFObjectWriter statics private
...
llvm-svn: 119982
2010-11-22 18:57:00 +00:00
84ffdd5cf1
Fix misplaced statics.
...
llvm-svn: 119981
2010-11-22 18:47:05 +00:00
a262546df7
Kill trailing whitespace
...
llvm-svn: 119979
2010-11-22 18:42:07 +00:00
7c7d0ef287
Refactor the ELFRelocationEntry (pull up) and move the arch-specific statics to inside the class where it belongs.
...
Next step is to rationally break apart the RecordRelocation()
Probably the step will be to have 1 member function for ech slot of the ELFRelocationEntry()
llvm-svn: 119978
2010-11-22 18:41:13 +00:00
7699d6cfe9
Implement ELF object file writing support for the MBlaze backend. Its not perfect yet, but it works for many tests.
...
llvm-svn: 119952
2010-11-21 22:06:28 +00:00
26cb15a549
Handle PCRel relocations with absolute values. Fixes PR8656.
...
llvm-svn: 119917
2010-11-21 00:48:25 +00:00
7d19efd6ff
A bit more of gnu as compatibility when handling relocations with aliases.
...
llvm-svn: 119328
2010-11-16 04:11:46 +00:00
202d91e433
Fix compiler warnigns.
...
llvm-svn: 119175
2010-11-15 19:20:50 +00:00
8c3039b67b
Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original
...
variable if recursing fails to simplify it.
Factor AliasedSymbol to be a method of MCSymbol.
Update MCAssembler::EvaluateFixup to match the change in
EvaluateAsRelocatableImpl.
Remove the WeakRefExpr hack, as the object writer now sees the weakref with
no extra effort needed.
Nothing else is using MCTargetExpr, but keep it for now.
Now that the ELF writer sees relocations with aliases, handle
.weak foo2
foo2:
.weak bar2
.set bar2,foo2
.quad bar2
the same way gas does and produce a relocation with bar2.
llvm-svn: 119152
2010-11-15 16:33:49 +00:00
96f4c01cb3
Dovetail with Dan Dunbar's rework of ELFObjectWriter.
...
Added 2 new subclasses - X86ELFObjectWriter and ARMELFObectWriter.
ARM and X86 require different code for RecordRelocation(), possibly others.
llvm-svn: 119149
2010-11-15 16:18:39 +00:00
240028d11d
Move the logic to decide with which symbol we produce a relocation (if any) to
...
a central location. This also makes us a bit more compatible with gas.
llvm-svn: 119094
2010-11-14 23:53:26 +00:00
7d0ba3464e
Handle a peculiar comdat case: Creating a section with an undefined
...
signature symbol causes a local symbol to be created unless there is
some other use of the symbol.
llvm-svn: 119026
2010-11-14 04:17:37 +00:00
0e3decfcf7
Simplify getSymbolIndexInSymbolTable by setting the actual index of
...
the symbols.
llvm-svn: 119022
2010-11-14 03:12:24 +00:00
fe0c28f4db
MC: Simplify Mach-O and ELF object writer implementations.
...
- What was I thinking?????
llvm-svn: 118992
2010-11-13 07:33:40 +00:00
dcc7732f88
MCELF: Copy the symbol name only if we're going to modify it.
...
llvm-svn: 118920
2010-11-12 19:26:04 +00:00
a3e9a2298d
Initial comdat implementation.
...
llvm-svn: 118805
2010-11-11 18:13:52 +00:00
fb6540c112
Make AliasedSymbol able to handle MCTargetExpr. They can get here if
...
a weakref is used with a VariantKind.
llvm-svn: 118798
2010-11-11 17:24:43 +00:00
fa7b55754c
Fix the symbol index of weak references. Also make RecordRelocation a bit
...
easier to read by having const references to the symbol, aliased symbol and
renamed symbol.
llvm-svn: 118793
2010-11-11 16:48:11 +00:00
19fa38000a
Remove some explicit arguments to getELFSection. This is
...
a leftover from the removal of isExplicit.
llvm-svn: 118774
2010-11-11 03:40:25 +00:00
5a8d781caa
Factor some code into WriteSection.
...
llvm-svn: 118733
2010-11-10 23:36:59 +00:00
eb97f59753
Update the section index map after we add the medatada sections.
...
llvm-svn: 118728
2010-11-10 22:34:07 +00:00
1801410fa8
Use SectionIndexMap in WriteSymbolTable to make it a little less brittle.
...
llvm-svn: 118725
2010-11-10 22:16:43 +00:00
d634003ebd
Factor some code into ComputeIndexMap.
...
llvm-svn: 118722
2010-11-10 21:51:05 +00:00
51d68339a2
Change the String<size> methods to take a fragment instead of a buffer.
...
llvm-svn: 118709
2010-11-10 20:02:59 +00:00
36ef57d2eb
Use MCSectionELF in places we know we have an ELF section.
...
llvm-svn: 118699
2010-11-10 19:05:07 +00:00
9bb44a5ce8
Fixed version of 118639 with an extra assert to catch similar problems
...
earlier. Implicit bool -> int conversions are evil!
llvm-svn: 118651
2010-11-09 23:42:07 +00:00
33048f069f
Revert previous patch. Missed a case.
...
llvm-svn: 118645
2010-11-09 22:54:38 +00:00
4bdd2724e3
Remove IsExplicit. It was always false.
...
llvm-svn: 118639
2010-11-09 22:37:44 +00:00
1614597873
Implement .weakref.
...
llvm-svn: 117911
2010-11-01 14:28:48 +00:00
3fe87a1eed
Add support for files with more than 65280 sections. No testcase since
...
it would be a bit too big :-)
llvm-svn: 117849
2010-10-31 00:16:26 +00:00
45834a0065
Be more strict on when we produce an undefined reference. In gas a file with
...
just
.type foo,@object
will produce an undefined reference to foo. On the other hand, a file with
just
.weakref bar, foo
will not. It is somewhat hard to support both in MC since both statements
should create the symbols. It should be possible if we really need to by
adding to the flags, but hopefully that is not necessary.
With this patch we do not produce a undefined reference in any of those cases.
The assembly file needs an actual use for the undefined reference to be
present.
This is in preparation for a patch implementing .weakref.
llvm-svn: 117735
2010-10-29 23:09:31 +00:00
3c5a54e4b9
Defined weak symbols should have non-zero value.
...
llvm-svn: 117585
2010-10-28 19:39:57 +00:00
29f70afbae
Fix relocations with renamed symbols.
...
llvm-svn: 117575
2010-10-28 19:08:03 +00:00
6cd76e63f8
Aliases defined with .symver should copy the binding of the symbols they alias.
...
Move the existing patching for undefined symbols so that all the patching
is done in the same function.
llvm-svn: 117570
2010-10-28 18:33:03 +00:00
936ba3af28
Implement R_X86_64_DTPOFF32.
...
llvm-svn: 117548
2010-10-28 15:11:03 +00:00
2dbec3f762
Implement TLSLD.
...
llvm-svn: 117547
2010-10-28 15:02:40 +00:00
e8f08be11c
Implement DTPOFF.
...
llvm-svn: 117546
2010-10-28 14:48:59 +00:00
6f23eb380d
Implement TLSLDM.
...
llvm-svn: 117544
2010-10-28 14:37:09 +00:00
b3b49bbc39
Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind.
...
llvm-svn: 117543
2010-10-28 14:22:44 +00:00
f8537165bd
Add support for R_386_TLS_GD, R_386_TLS_LE_32, R_386_TLS_IE and R_386_TLS_LE.
...
llvm-svn: 117494
2010-10-27 21:23:52 +00:00
24c8b04d5f
Implement R_X86_64_GOTTPOFF, R_X86_64_TLSGD and R_X86_64_TPOFF32.
...
llvm-svn: 117481
2010-10-27 20:28:07 +00:00
14807270be
Replace pointer arithmetic with StringRef::substr.
...
llvm-svn: 117477
2010-10-27 19:53:52 +00:00
26496e6835
Produce an error for an invalid use of .symver.
...
llvm-svn: 117462
2010-10-27 17:56:18 +00:00
cc1b168ef6
Symbols defined as the difference of other two end up in the ABS section.
...
llvm-svn: 117451
2010-10-27 16:04:30 +00:00
eb0c2c170d
Add support for the .symver directive. This is really ugly, but most of it is
...
contained in the ELF object writer.
llvm-svn: 117448
2010-10-27 15:18:17 +00:00
a5efd6a27c
Move more logic to isInSymtab and simplify.
...
llvm-svn: 117447
2010-10-27 14:44:52 +00:00
0ed1543d4e
Add support for emitting ARM file attributes.
...
llvm-svn: 117275
2010-10-25 17:50:35 +00:00
800fd3533c
Add X86::reloc_global_offset_table and use it to have a single place where
...
we check for _GLOBAL_OFFSET_TABLE_.
llvm-svn: 117241
2010-10-24 17:35:42 +00:00
1851090515
Making the e_machine configurable by the target backend in ELFObjectWriter.
...
llvm-svn: 117099
2010-10-22 15:52:49 +00:00
ee8d15157a
Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_.
...
llvm-svn: 116848
2010-10-19 19:31:37 +00:00
fba9f74932
Implement R_386_GOT32.
...
llvm-svn: 116744
2010-10-18 20:47:21 +00:00
0a5314fdb3
Relocate with .bss instead of using the symbol. Matches gas behavior.
...
llvm-svn: 116741
2010-10-18 20:25:33 +00:00
3604d4441a
Reenable assert.
...
llvm-svn: 116738
2010-10-18 19:33:01 +00:00
e3dc9e2ea1
Produce ELF::R_386_GOTPC relocations.
...
llvm-svn: 116728
2010-10-18 18:36:12 +00:00
257374bb0f
Make the bots happy.
...
llvm-svn: 116719
2010-10-18 18:03:28 +00:00
3521f8467d
Produce a R_386_PLT32 when needed. Moved the default cases of switches to the
...
start for consistency.
llvm-svn: 116715
2010-10-18 16:58:03 +00:00
4464e0858f
Handle GOTOFF correctly on i386.
...
llvm-svn: 116711
2010-10-18 16:38:04 +00:00
77414757f6
Fix a typo and silence unused variable warnings in -Asserts build.
...
llvm-svn: 116685
2010-10-17 07:38:40 +00:00
4262a22225
Add a MCObjectFormat class so that code common to all targets that use a
...
single object format can be shared.
This also adds support for
mov zed+(bar-foo), %eax
on ELF and COFF targets.
llvm-svn: 116675
2010-10-16 18:23:53 +00:00
84378f0f53
Refactor alias handling to AliasedSymbol.
...
llvm-svn: 116600
2010-10-15 18:25:33 +00:00
fbcf0db7ee
Refactor code a bit and avoid creating unnecessary entries in the string
...
map.
llvm-svn: 116579
2010-10-15 15:39:06 +00:00
bee6e9f8e0
Remove some code duplication.
...
llvm-svn: 116484
2010-10-14 16:34:44 +00:00
883936ce0b
Another case of 256 sections not being enough :-)
...
llvm-svn: 115858
2010-10-06 22:28:19 +00:00
5f2d6a5cd9
Get binding and visibility info from the the alias, but Type from the symbol
...
being aliased.
llvm-svn: 115836
2010-10-06 21:02:29 +00:00
d444577382
If a symbol is global, reloc against it even if it is in a mergeable section.
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llvm-svn: 115817
2010-10-06 19:27:21 +00:00
83b2a3337f
Make sure weak symbols are listed after the local ones.
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llvm-svn: 115795
2010-10-06 16:47:31 +00:00
8f3d2c9058
Correctly handle GOTPCREL relocations.
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llvm-svn: 115793
2010-10-06 16:23:36 +00:00
d7565c3a06
Use a relocation against the symbol if it is a PLT and the symbol is in another
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section. Common because of linkonce sections.
llvm-svn: 115718
2010-10-05 23:57:26 +00:00
0ad137e98e
Implement more alias cases.
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llvm-svn: 115699
2010-10-05 22:26:43 +00:00
3844da781f
256 sections should be enough for anyone...
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llvm-svn: 115687
2010-10-05 21:20:07 +00:00
c58a37ea51
Don't crash in a strange .size directive.
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llvm-svn: 115684
2010-10-05 21:02:45 +00:00
b1d0789357
Implement a simple alias case and refactor the code a bit so that the
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isInSymtab and isLocal logic in the two loops don't get easily out of sync.
llvm-svn: 115643
2010-10-05 18:01:23 +00:00
d03e81dba8
Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed.
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llvm-svn: 115623
2010-10-05 15:48:37 +00:00
bce26a1ee0
On ELF we need to know which symbols are used in relocations to decide if
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they should be in the symbol table or not. Instead of "guessing", just compute
the symbol table after the relocations are known.
llvm-svn: 115619
2010-10-05 15:11:03 +00:00
fd1fff8b19
Implement ELF::R_X86_64_GOTPCREL.
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llvm-svn: 115547
2010-10-04 19:51:39 +00:00
308363336b
Move isFixupKindX86PCRel.
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llvm-svn: 115545
2010-10-04 19:46:28 +00:00
baadbd554a
Produce a R_X86_64_PLT32 when needed.
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llvm-svn: 115541
2010-10-04 19:04:13 +00:00
b2c4ca6433
Produce a R_X86_64_GOT32 when needed.
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llvm-svn: 115537
2010-10-04 18:44:25 +00:00
da0e3d07b2
Include the section address in the computation of the relocation.
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llvm-svn: 115509
2010-10-04 15:59:01 +00:00
7c48b06930
Correctly compute the relocation when it is not in the first fragment.
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llvm-svn: 115506
2010-10-04 15:28:43 +00:00
f70b4e0c2e
Implement a very basic PIC case.
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llvm-svn: 115454
2010-10-03 00:46:57 +00:00
f987d5ea1c
Factor some logic into ShouldRelocOnSymbol. This simplifies the code and
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fixes some cases where we were producing relocations with at symbol that
should use a section instead.
llvm-svn: 115194
2010-09-30 20:18:35 +00:00
70d6e0e0ff
Correctly produce R_X86_64_32 or R_X86_64_32S.
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With this patch in
movq $foo, foo(%rip)
foo:
.long foo
We produce a R_X86_64_32S for the first relocation and R_X86_64_32 for the
second one.
llvm-svn: 115134
2010-09-30 03:11:42 +00:00
2ebaee9c75
Make it possible for the MCObjectWriter to decide if a given fixup is fully
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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
01d20a76fe
On elf, undefined symbols can start with .L.
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llvm-svn: 114958
2010-09-28 16:19:11 +00:00
96bfb50c03
Write relocations in the end of the file. This matches what gas does and
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makes files easier to diff.
llvm-svn: 114898
2010-09-27 22:04:54 +00:00
9735f4ff8d
Factor symbol value computation into a function.
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llvm-svn: 114891
2010-09-27 21:23:02 +00:00
75d65b9a03
Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put
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symbols defined in merge sections in independent atoms.
llvm-svn: 114786
2010-09-25 05:42:19 +00:00
cf1f985838
Reapply 114678 and 114667. Reverting them did not fix the bot:
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http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost/builds/69
llvm-svn: 114761
2010-09-24 21:19:03 +00:00
3843bb9d2c
Revert 114678 and 114667 to see if
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http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost
gets happy.
llvm-svn: 114742
2010-09-24 18:48:08 +00:00
f458f04eb1
Correctly handle weak undefined symbols. Before we would get a invalid binding
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(2 == STB_WEAK | STB_GLOBAL).
llvm-svn: 114690
2010-09-23 19:55:14 +00:00
6366d1b858
Correctly compute the offset of the symbol. Forgot these bits from the
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last commit.
llvm-svn: 114678
2010-09-23 18:01:31 +00:00
48e108753b
Represent relocations against local symbols as relocations against the section
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they are in. Both ways should be equivalent, but gas produces relocations
against the section.
Roman wrote the patch, I added the test.
llvm-svn: 114667
2010-09-23 17:25:18 +00:00
2816588eb9
Fix the FIXME.
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llvm-svn: 114639
2010-09-23 14:14:56 +00:00
0e527b7ed5
Fix typo and add a FIXME.
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llvm-svn: 114570
2010-09-22 19:04:41 +00:00
461a692c7f
Revert unrelated change that was accidentally included in the previous commit.
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llvm-svn: 114383
2010-09-21 00:40:19 +00:00
f0591c1642
Implement support for .local and its "interesting" interactions with .comm.
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llvm-svn: 114382
2010-09-21 00:24:38 +00:00
32ab4558fe
Produce a R_X86_64_32 when the value is >=0.
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llvm-svn: 114339
2010-09-20 19:20:47 +00:00
57e599a82a
Make sure the STT_FILE symbol is the first one in the symbol table.
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llvm-svn: 114285
2010-09-18 15:03:21 +00:00
0ecde03e9f
Avoid relocations in a common case.
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llvm-svn: 114229
2010-09-17 22:34:41 +00:00
44bf266111
Print the address of sections as 0 and create the metadata sections in the
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same order as gnu as.
llvm-svn: 114109
2010-09-16 19:46:31 +00:00
6c3c349b2b
MCELF: Write relocation fragments in the right endian.
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- This code is gross, but does the job for now.
llvm-svn: 113509
2010-09-09 18:01:29 +00:00
3b727f55aa
Make ELF OS ABI dependent on the OS from target triple.
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llvm-svn: 113508
2010-09-09 17:57:50 +00:00
2ef1a589c5
ELF_STB_Local is 0 so setting and checking it must be done specially
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llvm-svn: 113375
2010-09-08 18:08:40 +00:00
6c27de28b5
Unresolved weak symbols have value equal zero.
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llvm-svn: 113358
2010-09-08 14:29:45 +00:00
3723ba1fe0
MCELF: Align symtab, relocation sections and section headers properly. Patch by Krister Wombell.
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llvm-svn: 113155
2010-09-06 16:11:52 +00:00
4226198a1d
Allow creation of SHT_NULL sections, from Roman Divacky.
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llvm-svn: 112605
2010-08-31 17:03:33 +00:00
b1b493bcab
MCELF: The value of all common symbols is the offset from the start of the section. Patch by Roman Divacky.
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llvm-svn: 112492
2010-08-30 17:20:17 +00:00
8199447851
The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev.
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llvm-svn: 112473
2010-08-30 12:00:16 +00:00
f791b9fc56
Index external symbols by symbol table instead of parent section, by Roman Divacky.
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llvm-svn: 112472
2010-08-30 11:59:29 +00:00
95bb297c26
squish dead code.
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llvm-svn: 112350
2010-08-28 03:21:03 +00:00
05e22982c8
MCELF: Always overwrite FixedValue.
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llvm-svn: 112259
2010-08-27 10:38:39 +00:00
2c45f431fa
MCELF: Fix a thinko of mine.
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llvm-svn: 112203
2010-08-26 18:12:04 +00:00
929cc7618f
MCELF: Compensate for the addend on i386. Patch by Roman Divacky, with some cleanups.
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llvm-svn: 112197
2010-08-26 17:23:02 +00:00
37b384cd66
MCELF: Use precomputed symbol indices, patch by Roman Divacky.
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llvm-svn: 112079
2010-08-25 20:09:43 +00:00
a536f077fe
Relocate against parent if the symbol is not in section or it's a common symbol, from Roman Divacky.
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llvm-svn: 111925
2010-08-24 17:34:39 +00:00
d41b53c037
Fix thinko. Having no tests is great ...
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llvm-svn: 111848
2010-08-23 21:32:00 +00:00
c4809c930a
Reduce code duplication.
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llvm-svn: 111846
2010-08-23 21:23:52 +00:00
86511dce18
ELFObjectWriter: Run ComputeSymbolTable before recording relocations. This way we can use the information it has computed and don't have to recompute the same stuff over and over again.
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llvm-svn: 111844
2010-08-23 21:19:37 +00:00
40f83489b4
Add the symbol offset to the relocation value when we relocate against section. By Roman Divacky.
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llvm-svn: 111824
2010-08-23 19:05:46 +00:00
620b68e883
Use the proper relocation section + cleanup, from Roman Divacky.
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llvm-svn: 111819
2010-08-23 18:24:20 +00:00
448886d5df
MCELF: Count the section orders properly. Patch by Roman Divacky.
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llvm-svn: 111517
2010-08-19 13:44:49 +00:00
da7604f53d
Remove dead code. Fixes a GCC warning.
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llvm-svn: 111271
2010-08-17 19:45:05 +00:00
1afba421a9
Sketch i386 relocations handling, from Roman Divacky.
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Hello world builds & runs now on i386/ELF with -integrated-as.
llvm-svn: 111264
2010-08-17 18:20:28 +00:00
fd0541566b
Use the correct entry size for relocation entries, from Roman Divacky.
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llvm-svn: 111259
2010-08-17 17:56:13 +00:00
1fe76565d0
Differentiate between RELA and REL relocations, from Roman Divacky.
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llvm-svn: 111252
2010-08-17 17:30:07 +00:00
896bd7e932
One baby step towards i386 ELF, from Roman Divacky.
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llvm-svn: 111247
2010-08-17 17:02:29 +00:00
b962ca0ce5
Try to silence a overeager GCC warning.
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llvm-svn: 111214
2010-08-17 00:33:24 +00:00
5f237942f5
A round of minor cleanups for ELFObjectWriter.
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llvm-svn: 111213
2010-08-17 00:00:46 +00:00
be6cca2b7d
Silence warnings and simplify code. Eliminate a 32/64 bit portability issue.
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llvm-svn: 111201
2010-08-16 23:00:12 +00:00
1fe0d53aec
Fixes for generation of ELF relocations. Patch by Roman Divacky.
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llvm-svn: 111183
2010-08-16 21:17:09 +00:00
b20b5249d2
Fix a few warnings in and detabify MCELFStreamer and ELFObjectWriter.
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llvm-svn: 111175
2010-08-16 19:15:06 +00:00
6c1ad4835e
Add ELF ObjectWriter and Streamer support.
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I forgot to add these files in commit 111172.
llvm-svn: 111174
2010-08-16 18:57:57 +00:00
Rafael Espindola