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947 Commits

Author SHA1 Message Date
Jim Grosbach
bbef2c5fcc MC'ize the '.code 16' and '.thumb_func' ARM directives. 
llvm-svn: 118301
 2010-11-05 22:08:08 +00:00
Benjamin Kramer
ac2bcb05cc Put class into an anonymous namespace. 
llvm-svn: 118294
 2010-11-05 19:56:38 +00:00
Jim Grosbach
a85416eb77 Allow targets to specify the MachO CPUType/CPUSubtype information. 
llvm-svn: 118288
 2010-11-05 18:48:58 +00:00
Jim Grosbach
e952ae2659 syntaxunified directive is a no-op for MachO writing. 
llvm-svn: 118287
 2010-11-05 18:47:32 +00:00
Rafael Espindola
3f4a79b243 Add 118023 back, but with proper spelling for .uleb128/.sleb128. 
llvm-svn: 118254
 2010-11-04 18:17:08 +00:00
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
Rafael Espindola
2f114f8430 Write the line info to .debug_line. 
llvm-svn: 117930
 2010-11-01 17:07:14 +00:00
Rafael Espindola
5571ce5ed4 Move EmitInstruction to MCObjectStreamer so that ELF and MachO can share it. 
llvm-svn: 117925
 2010-11-01 16:27:31 +00:00
Rafael Espindola
a7f92c500c Add support for .value. 
llvm-svn: 117922
 2010-11-01 15:29:07 +00:00
Rafael Espindola
7a38cb0144 Implement .weakref. 
llvm-svn: 117911
 2010-11-01 14:28:48 +00:00
Rafael Espindola
660b7f5c4a 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
Rafael Espindola
0d9ac34ffa 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
Rafael Espindola
913ce7ebc8 Improvements to .section parsing: 
* If we have a M or a G, reject sections without the type
* Only parse the flag specific arguments if we have M or G
* Parse the corresponding arguments for M and G

We ignore the G arguments and flag for now.

llvm-svn: 117608
 2010-10-28 21:33:33 +00:00
Rafael Espindola
b562975139 Add support for the .string directive. 
llvm-svn: 117592
 2010-10-28 20:02:27 +00:00
Rafael Espindola
f230319275 Defined weak symbols should have non-zero value. 
llvm-svn: 117585
 2010-10-28 19:39:57 +00:00
Rafael Espindola
862d688cbd Fix relocations with renamed symbols. 
llvm-svn: 117575
 2010-10-28 19:08:03 +00:00
Rafael Espindola
e62cf892ae 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
Roman Divacky
2aedee6ff2 Use the IDVal directly as there's no need to convert to std::string. 
Pointed out by Chris!

llvm-svn: 117557
 2010-10-28 16:57:58 +00:00
Roman Divacky
8555f153e9 Implement .equ directive as a synonym to .set. 
llvm-svn: 117553
 2010-10-28 16:22:58 +00:00
Rafael Espindola
ff7e4e4e43 Implement R_X86_64_DTPOFF32. 
llvm-svn: 117548
 2010-10-28 15:11:03 +00:00
Rafael Espindola
1d1ff5485c Implement TLSLD. 
llvm-svn: 117547
 2010-10-28 15:02:40 +00:00
Rafael Espindola
8372247e83 Implement DTPOFF. 
llvm-svn: 117546
 2010-10-28 14:48:59 +00:00
Rafael Espindola
c44c5b374a Implement TLSLDM. 
llvm-svn: 117544
 2010-10-28 14:37:09 +00:00
Rafael Espindola
d8ef67f8b9 Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind. 
llvm-svn: 117543
 2010-10-28 14:22:44 +00:00
Rafael Espindola
68ec803155 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
Rafael Espindola
2ea1239070 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
Benjamin Kramer
a79201f572 Replace pointer arithmetic with StringRef::substr. 
llvm-svn: 117477
 2010-10-27 19:53:52 +00:00
Rafael Espindola
4db628cd34 Set default type and flags for .init and .fini. 
llvm-svn: 117471
 2010-10-27 18:45:20 +00:00
Rafael Espindola
ca302c994a Produce an error for an invalid use of .symver. 
llvm-svn: 117462
 2010-10-27 17:56:18 +00:00
Rafael Espindola
58a0ea80a4 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
Rafael Espindola
23d05a8675 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
Rafael Espindola
f5b4013598 Move more logic to isInSymtab and simplify. 
llvm-svn: 117447
 2010-10-27 14:44:52 +00:00
Rafael Espindola
50d3c29c30 Add support for .ident. 
llvm-svn: 117389
 2010-10-26 19:35:47 +00:00
Daniel Dunbar
5cbb066ea3 MC/AsmParser: Fix relative precedence of {+,-} and comparison ops. 
llvm-svn: 117299
 2010-10-25 20:18:56 +00:00
Daniel Dunbar
97fa30f53b MC/AsmLexer: Fix bug in source location for Slash token. 
llvm-svn: 117298
 2010-10-25 20:18:53 +00:00
Rafael Espindola
5748458e7d Add support for emitting ARM file attributes. 
llvm-svn: 117275
 2010-10-25 17:50:35 +00:00
Rafael Espindola
c6e7790c4b 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
Benjamin Kramer
9e988fe81e Make some symbols static, move classes into anonymous namespaces. 
llvm-svn: 117111
 2010-10-22 17:35:07 +00:00
Wesley Peck
488027efa3 Making the e_machine configurable by the target backend in ELFObjectWriter. 
llvm-svn: 117099
 2010-10-22 15:52:49 +00:00
Jim Grosbach
e6d61a87e4 Trailing whitespace. 
llvm-svn: 117073
 2010-10-21 22:04:05 +00:00
Michael J. Spencer
a43c204ef7 Fix Warnings. 
llvm-svn: 117062
 2010-10-21 20:49:38 +00:00
Rafael Espindola
69c973fbfd Do not recurse into symbol refs that have a variant kind. This prevents us 
from losing the variant when producing a relocation on an alias.

llvm-svn: 117037
 2010-10-21 18:00:20 +00:00
Chandler Carruth
55850cad48 Remove remaining uses of ATTRIBUTE_UNUSED on variables, and delete three 
#includes in the process.

llvm-svn: 116919
 2010-10-20 08:27:02 +00:00
Rafael Espindola
5f43aeb079 Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_. 
llvm-svn: 116848
 2010-10-19 19:31:37 +00:00
Bill Wendling
f937f0ed59 Fix spelling. 
llvm-svn: 116804
 2010-10-19 10:18:23 +00:00
Chandler Carruth
755dd8000d Move the definition of this to the source file to anchor the vtable. 
llvm-svn: 116779
 2010-10-19 00:37:30 +00:00
Rafael Espindola
9a98116bb7 Implement R_386_GOT32. 
llvm-svn: 116744
 2010-10-18 20:47:21 +00:00
Rafael Espindola
c75defe576 Relocate with .bss instead of using the symbol. Matches gas behavior. 
llvm-svn: 116741
 2010-10-18 20:25:33 +00:00
Rafael Espindola
6504490709 Reenable assert. 
llvm-svn: 116738
 2010-10-18 19:33:01 +00:00
Rafael Espindola
7cc236c87f Produce ELF::R_386_GOTPC relocations. 
llvm-svn: 116728
 2010-10-18 18:36:12 +00:00
Rafael Espindola
d74116b1e8 Make the bots happy. 
llvm-svn: 116719
 2010-10-18 18:03:28 +00:00
Rafael Espindola
bf9107e924 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
Rafael Espindola
4a7459403a Handle GOTOFF correctly on i386. 
llvm-svn: 116711
 2010-10-18 16:38:04 +00:00
Benjamin Kramer
e8c2e82a84 Fix a typo and silence unused variable warnings in -Asserts build. 
llvm-svn: 116685
 2010-10-17 07:38:40 +00:00
Rafael Espindola
be5c52d2dc 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
Michael J. Spencer
f9a7c39ecc MC-COFF: Add support for default-null weak externals. 
llvm-svn: 116666
 2010-10-16 08:25:57 +00:00
Daniel Dunbar
fedc37ce15 MC/AsmParser: Report .stabs directive as unsupported. 
llvm-svn: 116659
 2010-10-16 04:56:42 +00:00
Rafael Espindola
125360f835 Refactor alias handling to AliasedSymbol. 
llvm-svn: 116600
 2010-10-15 18:25:33 +00:00
Rafael Espindola
9b114d966a Refactor code a bit and avoid creating unnecessary entries in the string 
map.

llvm-svn: 116579
 2010-10-15 15:39:06 +00:00
Rafael Espindola
2cdc3d6235 Remove some code duplication. 
llvm-svn: 116484
 2010-10-14 16:34:44 +00:00
Michael J. Spencer
56d81e7eae MC-COFF: Fix .bss section size. Fixes PR8335. Patch by NAKAMUTA Takumi! 
llvm-svn: 116155
 2010-10-09 16:04:45 +00:00
Michael J. Spencer
4dc462314c MC-COFF: Implement InitSections. Fixes PR8335. 
llvm-svn: 116151
 2010-10-09 15:44:27 +00:00
Michael J. Spencer
9e8793d7d6 MC-COFF: Add COFFAsmParser. Completes PR8343. 
llvm-svn: 116150
 2010-10-09 11:01:07 +00:00
Michael J. Spencer
1c60bd155b Fix Whitespace. 
llvm-svn: 116149
 2010-10-09 11:00:50 +00:00
Michael J. Spencer
3066a09189 MC-COFF: Assert on non-coff sections. 
llvm-svn: 116148
 2010-10-09 11:00:37 +00:00
Michael J. Spencer
a2f33dfddc MC: Move ParseDirectiveELFType into ELFAsmParser. COFF uses .type for something else. 
llvm-svn: 116142
 2010-10-09 03:47:55 +00:00
Michael J. Spencer
43ccdd557d MC-COFF: Handle relaxation in COFF better. Fixes PR8321. 
llvm-svn: 116013
 2010-10-07 23:55:40 +00:00
NAKAMURA Takumi
4568ebde72 Minor cosmetic change: fix DOSish \r\n. 
llvm-svn: 115910
 2010-10-07 07:21:04 +00:00
Michael J. Spencer
85094f7689 MC-COFF: Fix symbol aliases. Fixes PR8251. 
llvm-svn: 115909
 2010-10-07 06:29:33 +00:00
Rafael Espindola
d0417ac2e1 Another case of 256 sections not being enough :-) 
llvm-svn: 115858
 2010-10-06 22:28:19 +00:00
Rafael Espindola
ed469a30f0 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
Michael J. Spencer
b1c4f7b52a MC: Add missing forward in MCLoggingStreamer. 
llvm-svn: 115830
 2010-10-06 20:36:47 +00:00
Rafael Espindola
6283a4a478 If a symbol is global, reloc against it even if it is in a mergeable section. 
llvm-svn: 115817
 2010-10-06 19:27:21 +00:00
Rafael Espindola
d085e53b36 Make sure weak symbols are listed after the local ones. 
llvm-svn: 115795
 2010-10-06 16:47:31 +00:00
Rafael Espindola
0c327e6e77 Correctly handle GOTPCREL relocations. 
llvm-svn: 115793
 2010-10-06 16:23:36 +00:00
Rafael Espindola
8c7f9745de Use a relocation against the symbol if it is a PLT and the symbol is in another 
section. Common because of linkonce sections.

llvm-svn: 115718
 2010-10-05 23:57:26 +00:00
Rafael Espindola
e2bc98a2b2 Implement more alias cases. 
llvm-svn: 115699
 2010-10-05 22:26:43 +00:00
Rafael Espindola
d82f0f7aac 256 sections should be enough for anyone... 
llvm-svn: 115687
 2010-10-05 21:20:07 +00:00
Rafael Espindola
5762077d52 Don't crash in a strange .size directive. 
llvm-svn: 115684
 2010-10-05 21:02:45 +00:00
Michael J. Spencer
079e1e2ce8 Fix Punctuation. 
llvm-svn: 115657
 2010-10-05 19:48:12 +00:00
Michael J. Spencer
19b6962abb MC-COFF: Fix (PR8278) temporary symbol relocations. 
llvm-svn: 115656
 2010-10-05 19:48:03 +00:00
Rafael Espindola
0b536fb0fb Add support for a fill value in the .zero directive. 
llvm-svn: 115655
 2010-10-05 19:42:57 +00:00
Rafael Espindola
f850cfbc16 Implement a simple alias case and refactor the code a bit so that the 
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
Rafael Espindola
e829a55e8e Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed. 
llvm-svn: 115623
 2010-10-05 15:48:37 +00:00
Rafael Espindola
5f53528867 On ELF we need to know which symbols are used in relocations to decide if 
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
Kevin Enderby
01b93a4319 Incorporate suggestions by Daniel Dunbar after his review. Thanks Daniel! 
1) Changed ValidateDwarfFileNumber() to isValidDwarfFileNumber() to be better
   named.  Since it is just a predicate and isn't actually changing any state.

2) Added a missing return in the comments for setCurrentDwarfLoc() in 
   include/llvm/MC/MCContext.h for fix formatting.

3) Changed clearDwarfLocSeen() to ClearDwarfLocSeen() since it does change
   state.

4) Simplified the last test in isValidDwarfFileNumber() to just a one line
   boolean test of MCDwarfFiles[FileNumber] != 0 for the final return statement.

llvm-svn: 115551
 2010-10-04 20:17:24 +00:00
Rafael Espindola
dcac047c7f Implement ELF::R_X86_64_GOTPCREL. 
llvm-svn: 115547
 2010-10-04 19:51:39 +00:00
Rafael Espindola
6b80b08cec Move isFixupKindX86PCRel. 
llvm-svn: 115545
 2010-10-04 19:46:28 +00:00
Rafael Espindola
f7e642c0da Produce a R_X86_64_PLT32 when needed. 
llvm-svn: 115541
 2010-10-04 19:04:13 +00:00
Rafael Espindola
08361a0329 Produce a R_X86_64_GOT32 when needed. 
llvm-svn: 115537
 2010-10-04 18:44:25 +00:00
Jan Wen Voung
9c76bbf90a Add hook in MCSection to decide when to use "optimized nops", for each 
section kind. Previously, optimized nops were only used for MachO.
Also added tests for ELF and COFF.

llvm-svn: 115523
 2010-10-04 17:32:41 +00:00
Rafael Espindola
491c3f9ef7 Include the section address in the computation of the relocation. 
llvm-svn: 115509
 2010-10-04 15:59:01 +00:00
Rafael Espindola
ce6ea76503 Correctly compute the relocation when it is not in the first fragment. 
llvm-svn: 115506
 2010-10-04 15:28:43 +00:00
Rafael Espindola
e209fd8ab7 Implement a very basic PIC case. 
llvm-svn: 115454
 2010-10-03 00:46:57 +00:00
Kevin Enderby
84d750a85c This adds a Darwin x86_64 relocation encoding for a subtraction expression 
where both symbols are "local", that is non-external symbols, and there is
no "base" for the symbols used in the expression, that is the section has
no non-temporary symbols.  This case looks like this:

% cat local_reloc_A-B.s
	.long 0
LB:	.long 1
	.long LA - LB - 4
	.long 2
LA:	.long 3

which llvm-mc will not encode without this patch, generates a "unsupported
local relocations in difference" error, but the Darwin assembler will
encode with relocation entries like this:

% otool -rv a.out l.out 
a.out:
Relocation information (__TEXT,__text) 2 entries
address  pcrel length extern type    scattered symbolnum/value
00000008 False long   False  SUB     False     1 (__TEXT,__text)
00000008 False long   False  UNSIGND False     1 (__TEXT,__text)

which is very similar to what is encoded when the symbols don't have the
leading 'L' and they are not temporary symbols.  Which llvm-mc and the
Darwin assembler will encoded like this:

Relocation information (__TEXT,__text) 2 entries
address  pcrel length extern type    scattered symbolnum/value
00000008 False long   True   SUB     False     B
00000008 False long   True   UNSIGND False     A

This is the missing relocation encoding needed to allow the Mach-O x86
Dwarf file and line table to be emitted.  So this patch also removes the
TODO from the if() statement in MCMachOStreamer::Finish() that didn't 
call MCDwarfFileTable::Emit() for 64-bit targets.

llvm-svn: 115389
 2010-10-02 00:13:41 +00:00
Rafael Espindola
5aae0d6863 Factor some logic into ShouldRelocOnSymbol. This simplifies the code and 
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
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
Kevin Enderby
0620ec51f6 Changes EvaluateAsAbsolute() to return the "current value" of the expression 
if we are given a Layout object, even in cases when the value is not fixed.
This will be needed by the final patch for the dwarf .loc support to size a
new MCDwarf fragment needed to build and emit dwarf line number tables.

llvm-svn: 115155
 2010-09-30 16:42:21 +00:00
Chandler Carruth
85a55025d8 Silence a GCC warning about not handling all flags in this switch, we 
specifically assert on unexpected flags.

llvm-svn: 115143
 2010-09-30 10:59:51 +00:00
Jan Wen Voung
7df9bf0092 Move logic of determining ELF entsize from the .s printer to initialization 
time. That way, the EntrySize field is initialized for other code paths, 
namely, the .ll -> .o code path.

llvm-svn: 115141
 2010-09-30 05:59:22 +00:00
Rafael Espindola
480ee577ad Correctly produce R_X86_64_32 or R_X86_64_32S. 
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
Jason W Kim
7822e6aab5 Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile() 
Small test for sanity check of resulting ARM .s file.
Tested against -r115129.

llvm-svn: 115133
 2010-09-30 02:45:56 +00:00
Jan Wen Voung
0d25ddb1de Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when 
constructing a section. Test for a few cases also included.

llvm-svn: 115132
 2010-09-30 02:41:46 +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
Jan Wen Voung
4b4807d984 Test commit - Deleted some whitespace at the end of a line. 
llvm-svn: 115122
 2010-09-30 01:09:20 +00:00
Rafael Espindola
96509a5550 Move "local commons" to the end of .bss to match the gnu as behavior. 
llvm-svn: 115037
 2010-09-29 14:52:01 +00:00
Michael J. Spencer
9c138864bc MC-COFF: Fix symbol storage class for globals 
llvm-svn: 115020
 2010-09-29 03:13:41 +00:00
Chris Lattner
9b9a847b8c change the protocol TargetAsmPArser::MatchInstruction method to take an 
MCStreamer to emit into instead of an MCInst to fill in.  This allows the
matcher extra flexibility and is more convenient.

llvm-svn: 115014
 2010-09-29 01:42:58 +00:00
Rafael Espindola
c604f87ba4 On elf, undefined symbols can start with .L. 
llvm-svn: 114958
 2010-09-28 16:19:11 +00:00
Rafael Espindola
c4d0ee0b96 Write relocations in the end of the file. This matches what gas does and 
makes files easier to diff.

llvm-svn: 114898
 2010-09-27 22:04:54 +00:00
Rafael Espindola
442f81681e Make sure .text doesn't produce extra alignment. 
llvm-svn: 114895
 2010-09-27 21:40:27 +00:00
Rafael Espindola
f987d204d5 Factor symbol value computation into a function. 
llvm-svn: 114891
 2010-09-27 21:23:02 +00:00
Michael J. Spencer
13fb9cadcb MC-COFF: Fix signed/unsigned comparison. 
llvm-svn: 114888
 2010-09-27 21:17:39 +00:00
Daniel Dunbar
7179426193 MC/AsmParser: Handle exponents in floating point literals. 
llvm-svn: 114861
 2010-09-27 20:12:52 +00:00
Rafael Espindola
843df9bbed Remove unused argument. 
llvm-svn: 114852
 2010-09-27 18:13:03 +00:00
Benjamin Kramer
cd6c025b08 Push twines deeper into SourceMgr's error handling methods. 
llvm-svn: 114847
 2010-09-27 17:42:11 +00:00
Michael J. Spencer
4867bf0fad MC-COFF: Drop empty sections, and label symbols. Convert relocations 
targeted at symbols into relocations relative to the containing section.

Patch by Nathan Jeffords!

llvm-svn: 114823
 2010-09-27 08:58:26 +00:00
Rafael Espindola
e4c0edf697 Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put 
symbols defined in merge sections in independent atoms.

llvm-svn: 114786
 2010-09-25 05:42:19 +00:00
Rafael Espindola
b70ab59ca8 Reapply 114678 and 114667. Reverting them did not fix the bot: 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost/builds/69

llvm-svn: 114761
 2010-09-24 21:19:03 +00:00
Rafael Espindola
909ffec6eb Revert 114678 and 114667 to see if 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost

gets happy.

llvm-svn: 114742
 2010-09-24 18:48:08 +00:00
Daniel Dunbar
452f5345c5 MC/AsmParser: Handle a missed case of floating literals in the lexer. 
llvm-svn: 114733
 2010-09-24 17:10:26 +00:00
Daniel Dunbar
702c4ef9d8 MC/AsmParser: Support .single and .double for embedding floating point literals. 
- I believe more modern 'gas' supports a more enhanced set of arithmetic on
   them, but for now the only thing we can do is emit them as data.

llvm-svn: 114719
 2010-09-24 01:59:56 +00:00
Daniel Dunbar
eacb42cfee MC/Lexer: Add 'Real' token type for floating point literals. 
llvm-svn: 114718
 2010-09-24 01:59:31 +00:00
Daniel Dunbar
5a7991262a MC: Add missing ')' in diagnostic. 
llvm-svn: 114717
 2010-09-24 01:58:56 +00:00
Rafael Espindola
4b0d25a0db Correctly handle weak undefined symbols. Before we would get a invalid binding 
(2 == STB_WEAK | STB_GLOBAL).

llvm-svn: 114690
 2010-09-23 19:55:14 +00:00
Rafael Espindola
44da043992 Correctly compute the offset of the symbol. Forgot these bits from the 
last commit.

llvm-svn: 114678
 2010-09-23 18:01:31 +00:00
Rafael Espindola
ce04ba0f70 Represent relocations against local symbols as relocations against the section 
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
Rafael Espindola
4f8e36e163 Fix the FIXME. 
llvm-svn: 114639
 2010-09-23 14:14:56 +00:00
Sean Callanan
389f8119e1 Fixed a crash in the enhanced disassembler where 
because of the lack of a newline, AsmToken::Eof
was being found instead of AsmToken::EndOfStatement.

llvm-svn: 114621
 2010-09-23 02:14:12 +00:00
Jim Grosbach
d8735f1db1 Add support for ELF PLT references for ARM MC asm printing. Adding a 
new VariantKind to the MCSymbolExpr seems like overkill, but I'm not sure
there's a more straightforward way to get the printing difference captured.
(i.e., x86 uses @PLT, ARM uses (PLT)).

llvm-svn: 114613
 2010-09-22 23:27:36 +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
Chris Lattner
04d9e1641f allow target-specific label suffixes, patch by Yuri Gribov! 
llvm-svn: 114592
 2010-09-22 22:19:53 +00:00
Rafael Espindola
ef6cf9dce9 Fix typo and add a FIXME. 
llvm-svn: 114570
 2010-09-22 19:04:41 +00:00
Jim Grosbach
8899a330c7 grammar tweakage 
llvm-svn: 114561
 2010-09-22 18:18:30 +00:00
Jim Grosbach
f8956463a7 remove trailing whitespace 
llvm-svn: 114560
 2010-09-22 18:16:55 +00:00
Rafael Espindola
a2d73f0a38 Correctly align bss. 
llvm-svn: 114556
 2010-09-22 17:43:04 +00:00
Chris Lattner
1c5e55f787 fix rdar://8456417 - llvm-mc can't do basic math 
llvm-svn: 114532
 2010-09-22 05:05:16 +00:00
Rafael Espindola
93f3fb8aca Revert unrelated change that was accidentally included in the previous commit. 
llvm-svn: 114383
 2010-09-21 00:40:19 +00:00
Rafael Espindola
02af3cdd58 Implement support for .local and its "interesting" interactions with .comm. 
llvm-svn: 114382
 2010-09-21 00:24:38 +00:00
Rafael Espindola
78fc1f7f66 Produce a R_X86_64_32 when the value is >=0. 
llvm-svn: 114339
 2010-09-20 19:20:47 +00:00
Rafael Espindola
9c3a9bf8aa Make sure the STT_FILE symbol is the first one in the symbol table. 
llvm-svn: 114285
 2010-09-18 15:03:21 +00:00
Rafael Espindola
acd5bacfb9 Avoid relocations in a common case. 
llvm-svn: 114229
 2010-09-17 22:34:41 +00:00
Daniel Dunbar
ea0a5aee7b Fix an MSVC warning. 
llvm-svn: 114184
 2010-09-17 16:34:24 +00:00
Daniel Dunbar
ed92665b19 MC/Mach-O/i386: Fix a crash in relocation handling. 
llvm-svn: 114176
 2010-09-17 15:21:50 +00:00
Daniel Dunbar
a43c86b354 MC/AsmParser: Add support for 'a + 4@GOTPCREL' and friends, by reconsing the 
expression to include the modifier.
 - Gross, but this a corner case we don't expect to see often in practice, but
   it is worth accepting.
 - Also improves diagnostics on invalid modifiers.

llvm-svn: 114154
 2010-09-17 02:47:07 +00:00
Rafael Espindola
d542892fc0 Print the address of sections as 0 and create the metadata sections in the 
same order as gnu as.

llvm-svn: 114109
 2010-09-16 19:46:31 +00:00
Rafael Espindola
fa964e153e Make sure that names like .note.GNU-stack are accepted as valid section names. 
llvm-svn: 114091
 2010-09-16 17:05:55 +00:00
Rafael Espindola
58aa9e8010 Add support for the .zero directive. 
llvm-svn: 114077
 2010-09-16 15:03:59 +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
Michael J. Spencer
90f807fda5 Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally." 
This reverts commit r113632

Conflicts:

	cmake/modules/AddLLVM.cmake

llvm-svn: 113819
 2010-09-13 23:59:48 +00:00
Rafael Espindola
5b005d087c Factoring and potential bug fix. The elf "flags" cannot be used as masks. 
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
Rafael Espindola
ce9b27497e Add support for leb128 of absolute expressions. 
llvm-svn: 113691
 2010-09-11 16:45:15 +00:00
Chris Lattner
ffe1efe7ef fix the asmparser so that the target is responsible for skipping to 
the end of the line on a parser error, allowing skipping to happen
for syntactic errors but not for semantic errors.  Before we would
miss emitting a diagnostic about the second line, because we skipped
it due to the semantic error on the first line:

  foo %eax
  bar %al

This fixes rdar://8414033 - llvm-mc ignores lines after an invalid instruction mnemonic errors

llvm-svn: 113688
 2010-09-11 16:18:25 +00:00
Michael J. Spencer
98ad3f2ea7 CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally. 
llvm-svn: 113632
 2010-09-10 21:14:25 +00:00
Daniel Dunbar
547563df12 llvm-mc: Don't crash when using -n and we see a directive before the initial section. 
- This is annoying, because we have to scatter this check everywhere that could emit real data, but I see no better solution.

llvm-svn: 113552
 2010-09-09 22:42:59 +00:00
Daniel Dunbar
07c0ca2a51 llvm-mc: Make sure we exit != 0 if any errors are encountered. 
llvm-svn: 113551
 2010-09-09 22:42:56 +00:00
Benjamin Kramer
7ca791ef4f MCELF: Write relocation fragments in the right endian. 
- This code is gross, but does the job for now.

llvm-svn: 113509
 2010-09-09 18:01:29 +00:00
Roman Divacky
536c4ab8bd Make ELF OS ABI dependent on the OS from target triple. 
llvm-svn: 113508
 2010-09-09 17:57:50 +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
Roman Divacky
c0f16ab31a ELF_STB_Local is 0 so setting and checking it must be done specially 
llvm-svn: 113375
 2010-09-08 18:08:40 +00:00
Roman Divacky
d56d1cd938 Unresolved weak symbols have value equal zero. 
llvm-svn: 113358
 2010-09-08 14:29:45 +00:00
Chris Lattner
0e0f9094e9 change the MC "ParseInstruction" interface to make it the 
implementation's job to check for and lex the EndOfStatement
marker.

llvm-svn: 113347
 2010-09-08 05:10:46 +00:00
Benjamin Kramer
2447226e73 MCELF: Align symtab, relocation sections and section headers properly. Patch by Krister Wombell. 
llvm-svn: 113155
 2010-09-06 16:11:52 +00:00
Bill Wendling
da6d7dd741 Get rid of "passing signed into unsigned parameter" warning on PPC. 
llvm-svn: 112995
 2010-09-03 19:09:46 +00:00
Benjamin Kramer
dd16ed1618 Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky. 
llvm-svn: 112849
 2010-09-02 18:53:37 +00:00
Benjamin Kramer
4d2c506037 Allow MCSA_WeakRef in ELF. Patch by Roman Divacky. 
llvm-svn: 112834
 2010-09-02 17:18:32 +00:00
Devang Patel
bbbd35d042 Fix .debug_range for linux. Patch by Krister Wombell. 
llvm-svn: 112830
 2010-09-02 16:43:44 +00:00
Devang Patel
9e8ee9242f Use absolute label for DW_AT_stmt_list if a target does not prefer offset here. 
This patch was developed on top of original patch by Artur Pietrek.

llvm-svn: 112678
 2010-08-31 23:50:19 +00:00
Kevin Enderby
cc1c9257f6 This is the second of three patches to implement support for the .loc directive 
and output the dwarf line number tables.  This takes the current loc info after
an instruction is assembled and saves the needed info into an object that has
vector and for each section.  These objects will be used for the final patch to 
build and emit the encoded dwarf line number tables.  Again for now this is only
in the Mach-O streamer but at some point will move to a more generic place.

llvm-svn: 112668
 2010-08-31 22:55:11 +00:00
Benjamin Kramer
3f8b8c1f5b Allow creation of SHT_NULL sections, from Roman Divacky. 
llvm-svn: 112605
 2010-08-31 17:03:33 +00:00
Benjamin Kramer
6c5076f317 MCELF: The value of all common symbols is the offset from the start of the section. Patch by Roman Divacky. 
llvm-svn: 112492
 2010-08-30 17:20:17 +00:00
Benjamin Kramer
b540b09a7c The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev. 
llvm-svn: 112473
 2010-08-30 12:00:16 +00:00
Benjamin Kramer
ca65cc9222 Index external symbols by symbol table instead of parent section, by Roman Divacky. 
llvm-svn: 112472
 2010-08-30 11:59:29 +00:00
Benjamin Kramer
3aabb3eb53 Mark all common symbols external. This is not exactly correct but it lets apps 
link for now and can be adjusted later. Patch by Roman Divacky.

llvm-svn: 112471
 2010-08-30 11:56:55 +00:00
Chris Lattner
b2dbdbc795 squish dead code. 
llvm-svn: 112350
 2010-08-28 03:21:03 +00:00
Benjamin Kramer
f5c811611e MCELF: Port EmitInstruction changes from MachO streamer. Patch by Roman Divacky. 
llvm-svn: 112260
 2010-08-27 10:40:51 +00:00
Benjamin Kramer
4e04c2e69f MCELF: Always overwrite FixedValue. 
llvm-svn: 112259
 2010-08-27 10:38:39 +00:00
Benjamin Kramer
537450a5e8 MCELF: Fix a thinko of mine. 
llvm-svn: 112203
 2010-08-26 18:12:04 +00:00
Benjamin Kramer
a1f93ec939 MCELF: Compensate for the addend on i386. Patch by Roman Divacky, with some cleanups. 
llvm-svn: 112197
 2010-08-26 17:23:02 +00:00
Benjamin Kramer
ebee78319c MCELF: Use precomputed symbol indices, patch by Roman Divacky. 
llvm-svn: 112079
 2010-08-25 20:09:43 +00:00
Michael J. Spencer
052ffacb48 MC: Fix inconsistant naming in COFF object writer. Patch by Cameron Esfahani. 
llvm-svn: 112076
 2010-08-25 19:27:27 +00:00
Kevin Enderby
bb121d1dc2 Change the parsing of .loc back to allow the LineNumber field to be optional as 
it is with other assemblers.

llvm-svn: 111967
 2010-08-24 21:14:47 +00:00
Michael J. Spencer
526e183800 Fix COFF x86-64 relocations. PR7960. 
Multiple symbol reloc handling part of the patch by Cameron Esfahani.

llvm-svn: 111963
 2010-08-24 21:04:52 +00:00
Kevin Enderby
024b04ad93 First bit of support for the dwarf .loc directive. This patch updates the 
needed parsing for the .loc directive and saves the current info from that
into the context.  The next patch will take the current loc info after an
instruction is assembled and save that info into a vector for each section for
use to build the line number tables.  The patch after that will encode the info
from those vectors into the output file as the dwarf line tables.

llvm-svn: 111956
 2010-08-24 20:32:42 +00:00
Daniel Dunbar
bd6901864b MC/AsmParser: Change ParseExpression to use ParseIdentifier(), to support 
dollars in identifiers.

llvm-svn: 111946
 2010-08-24 19:13:42 +00:00
Daniel Dunbar
7859dfd71b MC/Parser: Accept leading dollar signs in identifiers. 
- Implemented by manually splicing the tokens. If this turns out to be
   problematically platform specific, a more elegant solution would be to
   implement some context dependent lexing support.

llvm-svn: 111934
 2010-08-24 18:12:12 +00:00
Benjamin Kramer
958ba693b5 Relocate against parent if the symbol is not in section or it's a common symbol, from Roman Divacky. 
llvm-svn: 111925
 2010-08-24 17:34:39 +00:00
Chris Lattner
115fdde871 fix rdar://7997827 - Accept and ignore LL and ULL suffixes on integer literals. 
Also fix 0b010 syntax to actually work while we're at it :-)

llvm-svn: 111876
 2010-08-24 00:43:25 +00:00
Benjamin Kramer
b08a868783 Fix thinko. Having no tests is great ... 
llvm-svn: 111848
 2010-08-23 21:32:00 +00:00
Benjamin Kramer
005c0b532e Reduce code duplication. 
llvm-svn: 111846
 2010-08-23 21:23:52 +00:00
Benjamin Kramer
8961d86d95 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. 
llvm-svn: 111844
 2010-08-23 21:19:37 +00:00
Benjamin Kramer
be1f37f512 Add the symbol offset to the relocation value when we relocate against section. By Roman Divacky. 
llvm-svn: 111824
 2010-08-23 19:05:46 +00:00
Benjamin Kramer
c67b87ec44 Use the proper relocation section + cleanup, from Roman Divacky. 
llvm-svn: 111819
 2010-08-23 18:24:20 +00:00
Michael J. Spencer
82f1603fa7 Revert part of my last commit. the mingw32 build bot doesn't seem to like it. 
llvm-svn: 111793
 2010-08-23 05:25:23 +00:00
Michael J. Spencer
c52ac23659 Workaround broken jump tables on x86-64 COFF. 
llvm-svn: 111792
 2010-08-23 04:45:37 +00:00
Michael J. Spencer
18689045ce MC: Add partial x86-64 support to COFF. 
llvm-svn: 111728
 2010-08-21 05:58:13 +00:00
Benjamin Kramer
574b1a27b1 MCELF: Count the section orders properly. Patch by Roman Divacky. 
llvm-svn: 111517
 2010-08-19 13:44:49 +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
Benjamin Kramer
5756afebba Remove dead code. Fixes a GCC warning. 
llvm-svn: 111271
 2010-08-17 19:45:05 +00:00