44ec69efe0
For ELF, also call fixSymbolsInTLSFixups() on expressions passed to EmitValue (literal values). Previously only called on expressions in instructions. New test cases added to tls.s, tls-i386.s. Resolves PR11981.
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llvm-svn: 150582
2012-02-15 15:09:06 +00:00
a2886c21d9
Convert assert(0) to llvm_unreachable
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llvm-svn: 149967
2012-02-07 05:05:23 +00:00
81a6274e7c
Remove MCELFStreamer.h.
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llvm-svn: 147745
2012-01-07 23:18:39 +00:00
0708209642
Split Finish into Finish and FinishImpl to have a common place to do end of
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file error checking. Use that to error on an unfinished cfi_startproc.
The error is not nice, but is already better than a segmentation fault.
llvm-svn: 147717
2012-01-07 03:13:18 +00:00
735cb8bcdc
Add support for gnu_indirect_function.
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llvm-svn: 146377
2011-12-12 17:34:04 +00:00
0dde349df1
Tidy up. 80 columns.
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llvm-svn: 144649
2011-11-15 16:46:22 +00:00
82b077ec22
This is the first of several patches for Mips direct object generation.
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This first patch is for expression variable kinds.
Patch by Jack Carter!
llvm-svn: 142934
2011-10-25 18:13:20 +00:00
6397051ece
Don't drop alignment info on local common symbols.
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- On COFF the .lcomm directive has an alignment argument.
- On ELF we fall back to .local + .comm
Based on a patch by NAKAMURA Takumi.
Fixes PR9337, PR9483 and PR10128.
llvm-svn: 138976
2011-09-01 23:04:27 +00:00
481ebb0133
Support .code32 and .code64 in X86 assembler.
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llvm-svn: 136197
2011-07-27 00:38:12 +00:00
5928e69d20
Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend.
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llvm-svn: 136010
2011-07-25 23:24:55 +00:00
f2596bc62a
Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where they belong.
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llvm-svn: 135833
2011-07-23 00:45:41 +00:00
c7ac690ba2
Unfortunately several files in MC are badly violating layering rule by using
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TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are
other cases of violations, but this is probably the worst.
This patch is but one small step towards fixing this. 500 more steps to go. :-(
llvm-svn: 135131
2011-07-14 05:43:07 +00:00
e90c1cb221
sets bit 0 of the function address of thumb function in .symtab
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("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)
Patch by Koan-Sin Tan!
llvm-svn: 131406
2011-05-16 16:17:21 +00:00
b6089d6cac
Factor some code into a new EmitFrames method.
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llvm-svn: 131119
2011-05-10 03:14:15 +00:00
750cb61553
GCC uses a different encoding of pointers in the FDE when using
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-fno-dwarf2-cfi-asm. Implement the same behavior.
llvm-svn: 130637
2011-05-01 04:49:54 +00:00
07de07eeea
Fix handling of @IDNTPOFF relocations, they need to get STT_TLS.
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While here, add VK_ARM_TPOFF and VK_ARM_GOTTPOFF, too.
llvm-svn: 127780
2011-03-17 00:35:10 +00:00
771911e28b
Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them.
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llvm-svn: 126942
2011-03-03 14:52:12 +00:00
30a52dec93
Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class.
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llvm-svn: 126686
2011-02-28 21:45:04 +00:00
fcf51fd298
Roll out r126425 and r126450 to see if it fixes the failures on the buildbots.
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llvm-svn: 126488
2011-02-25 16:30:32 +00:00
b037383a35
Enable DebugInfo support for COFF object files.
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Patch by Nathan Jeffords!
llvm-svn: 126425
2011-02-24 21:04:00 +00:00
58ac6e1677
Add support for pushsection and popsection. Patch by Joerg Sonnenberger.
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llvm-svn: 125629
2011-02-16 01:08:29 +00:00
b3eca9bb71
Add support for the --noexecstack option.
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llvm-svn: 124077
2011-01-23 17:55:27 +00:00
0e7e34e476
Remove more duplicated code.
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llvm-svn: 124056
2011-01-23 04:43:11 +00:00
aea4958ea6
Remove duplicated code.
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llvm-svn: 124054
2011-01-23 04:28:49 +00:00
9141b611ad
Add basic support for .cfi_personality.
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llvm-svn: 122566
2010-12-26 20:20:31 +00:00
4c1386add9
1. ARM/MC/ELF: A few more ELF relocs for .o
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2. Fixed EmitLocalCommonSymbol for ELF (Yes, they exist. :)
Test added.
llvm-svn: 121951
2010-12-16 03:12:17 +00:00
0a017a6db2
Fixed version of 121434 with no new memory leaks.
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llvm-svn: 121471
2010-12-10 07:39:47 +00:00
a945a34c73
Revert my previous patch to make the valgrind bots happy.
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llvm-svn: 121461
2010-12-10 04:01:09 +00:00
56eb741237
Initial support for the cfi directives. This is just enough to get
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f:
.cfi_startproc
nop
.cfi_endproc
assembled (on ELF).
llvm-svn: 121434
2010-12-09 23:48:29 +00:00
93e3cf0ebd
Sorry for such a large commit. The summary is that only MachO cares about the
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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
57ab708bdd
Try to resolve symbol differences early, and if successful create a plain
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data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.
llvm-svn: 120767
2010-12-03 00:55:40 +00:00
9065bfc692
Move EmitValueToOffset to the ObjectStreamer.
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llvm-svn: 120691
2010-12-02 05:59:38 +00:00
3fa6fc1450
Add EmitInstToFragment to the generic object streamer.
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llvm-svn: 120690
2010-12-02 05:44:06 +00:00
a084fd6e9d
Move EmitValue to MCObjectStreamer.
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llvm-svn: 120269
2010-11-28 23:08:47 +00:00
e5b7415b21
Fixed verson of r120245.
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Factor some duplicated code into MCObjectStreamer::EmitLabel.
llvm-svn: 120248
2010-11-28 17:18:55 +00:00
1679580cc9
Revert previous patch while I debug the darwin bootstrap failure.
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llvm-svn: 120246
2010-11-28 16:22:59 +00:00
d4b3feb3f7
Factor some duplicated code into MCObjectStreamer::EmitLabel.
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llvm-svn: 120245
2010-11-28 15:54:36 +00:00
b746531c2c
Avoid code duplication in the many unsupported EmitGPRel32Value implementations.
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llvm-svn: 120243
2010-11-28 15:09:24 +00:00
8a3a7923eb
Define generic 1, 2 and 4 byte pc relative relocations. They are common
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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
e98d483b71
Fix and add tests for all cases in x86 and x86_64 where gnu as implicitly
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sets the type of a symbol to STT_TLS.
llvm-svn: 120100
2010-11-24 18:51:21 +00:00
4e70ac7b68
If a symbol is used as tls, mark it as tls even if not declare as so. Probably
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fixes PR8659.
llvm-svn: 120076
2010-11-24 02:19:40 +00:00
8be14414f6
Added support for the Mach-O .symbol_resolver directive. rdar://8673046
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llvm-svn: 119816
2010-11-19 18:39:33 +00:00
b58867ccba
Change some methods in MCDwarf.cpp to be able to handle an arbitrary
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MCStreamer instead of just MCObjectStreamer. Address changes cannot
be as efficient as we have to use DW_LNE_set_addres, but at least
most of the logic is shared.
This will be used so that, with CodeGen still using EmitDwarfLocDirective,
llvm-gcc is able to produce debug_line sections without needing an
assembler that supports .loc.
llvm-svn: 119777
2010-11-19 02:26:16 +00:00
c653a895c8
Add .loc methods to the streamer.
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Next: Add support for the !HasDotLocAndDotFile case to the MCAsmStreamer
and then switch codegen to use it.
llvm-svn: 119384
2010-11-16 21:20:32 +00:00
8c3039b67b
Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original
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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
a7d0bed336
Fix another case of a .comm directive without a corresponding .type
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directive.
llvm-svn: 119073
2010-11-14 21:11:16 +00:00
b05ef7377a
Fix the type of a symbol created with .comm and no corresponding .type.
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llvm-svn: 119060
2010-11-14 19:40:55 +00:00
7d0ba3464e
Handle a peculiar comdat case: Creating a section with an undefined
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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
eba9022652
Fix warning.
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llvm-svn: 119021
2010-11-14 01:34:31 +00:00
84d031870c
Mark labels declared in tls sections as STT_TLS. This matches the behavior of
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gas.
llvm-svn: 118818
2010-11-11 19:04:55 +00:00
cbdf7efe1c
Add '.code 32' assembler directive to MC streamers.
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llvm-svn: 118309
2010-11-05 22:40:09 +00:00
5a2c68d308
MC'ize the '.code 16' and '.thumb_func' ARM directives.
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llvm-svn: 118301
2010-11-05 22:08:08 +00:00
80bb80f5fc
Put class into an anonymous namespace.
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llvm-svn: 118294
2010-11-05 19:56:38 +00:00
13ddd6d410
Write the line info to .debug_line.
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llvm-svn: 117930
2010-11-01 17:07:14 +00:00
72b5488680
Move EmitInstruction to MCObjectStreamer so that ELF and MachO can share it.
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llvm-svn: 117925
2010-11-01 16:27:31 +00:00
1614597873
Implement .weakref.
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llvm-svn: 117911
2010-11-01 14:28:48 +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
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
645f6c2bef
Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile()
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Small test for sanity check of resulting ARM .s file.
Tested against -r115129.
llvm-svn: 115133
2010-09-30 02:45:56 +00:00
53f0bf194a
Move "local commons" to the end of .bss to match the gnu as behavior.
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llvm-svn: 115037
2010-09-29 14:52:01 +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
dee12d8110
Avoid some Mach-O specific alignment being done on ELF.
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llvm-svn: 114594
2010-09-22 22:27:05 +00:00
9bac6cb544
Correctly align bss.
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llvm-svn: 114556
2010-09-22 17:43:04 +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
f667d929ce
Add a InitSections method to the streamer interface.
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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
9fd2ed9243
Factoring and potential bug fix. The elf "flags" cannot be used as masks.
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For example, setting STT_OBJECT (1) and STT_FUNC (2), should not produce
a STT_SECTION (3).
llvm-svn: 113759
2010-09-13 17:39:45 +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
5af02b0360
Allow MCSA_WeakRef in ELF. Patch by Roman Divacky.
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llvm-svn: 112834
2010-09-02 17:18:32 +00:00
6ebea89316
Mark all common symbols external. This is not exactly correct but it lets apps
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link for now and can be adjusted later. Patch by Roman Divacky.
llvm-svn: 112471
2010-08-30 11:56:55 +00:00
1f6012479f
MCELF: Port EmitInstruction changes from MachO streamer. Patch by Roman Divacky.
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llvm-svn: 112260
2010-08-27 10:40:51 +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
David Meyer