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58 Commits

Author SHA1 Message Date
Jim Grosbach 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
Rafael Espindola 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
Daniel Dunbar 0ac77d526d macho-dump: Add support for dumping relocation entries. 
llvm-svn: 120216
 2010-11-27 13:39:48 +00:00
Daniel Dunbar 768a5e8004 Fix a comment. 
llvm-svn: 120199
 2010-11-27 07:39:37 +00:00
Daniel Dunbar 4b128a5d4f Reduce nesting. 
llvm-svn: 120189
 2010-11-27 05:18:48 +00:00
Daniel Dunbar eab6e401fe MC/Mach-O: Migrate more constants into MachOFormat.h. 
llvm-svn: 120188
 2010-11-27 04:59:14 +00:00
Daniel Dunbar 2263ca4834 MC/Mach-O: Introduce Object/MachOFormat for describing purely platform / machine 
independent information on the Mach object format, and move some stuff from
MachObjectWriter.cpp there.

llvm-svn: 120186
 2010-11-27 04:19:38 +00:00
Rafael Espindola 7a2cd8b540 make isVirtualSection a virtual method on MCSection. Chris' suggestion. 
llvm-svn: 119547
 2010-11-17 20:03:54 +00:00
Daniel Dunbar 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
Jim Grosbach ba321cb120 Trailing whitespace. 
llvm-svn: 118831
 2010-11-11 20:16:23 +00:00
Jim Grosbach 46c2acbcb4 Allow targets to specify the MachO CPUType/CPUSubtype information. 
llvm-svn: 118288
 2010-11-05 18:48:58 +00:00
Rafael Espindola bce26a1ee0 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 a8d176866d 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 70d6e0e0ff 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
Rafael Espindola 2ebaee9c75 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
Rafael Espindola cceded493f Remove unused argument. 
llvm-svn: 114852
 2010-09-27 18:13:03 +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
Chris Lattner 1218ed824d silence a vc2010 warning: " result of 32-bit shift implicitly converted to 
64 bits (was 64-bit shift intended?)", pointed out by 'nobled' on llvmdev

llvm-svn: 111148
 2010-08-16 16:35:20 +00:00
Michael J. Spencer 18bf25f189 Revert "MC/MachO: Fix possible null pointer dereference." 
This reverts commit 110575.

Target.isAbsolute() is true if SD would be null.

llvm-svn: 110683
 2010-08-10 16:00:49 +00:00
Michael J. Spencer 4a5167c836 MC/MachO: Fix possible null pointer dereference. 
Discovered by Microsoft Visual Studio 2010 Code Analysis.

llvm-svn: 110575
 2010-08-09 15:28:05 +00:00
Chris Lattner 05ea2a4791 finish up support for callw: PR7195 
llvm-svn: 107826
 2010-07-07 22:35:13 +00:00
Duncan Sands 1245e4c07d The variable "Value" is carefully set to Layout.getSymbolAddress, 
but then not actually used - maybe a bug?  Remove the variable.

llvm-svn: 107137
 2010-06-29 13:26:33 +00:00
Eric Christopher 7f85520644 Get the addend correct for i386 pic. 
Thanks Daniel!

llvm-svn: 106608
 2010-06-22 23:51:47 +00:00
Eric Christopher 93f16372f9 Update comment. 
llvm-svn: 106191
 2010-06-17 00:49:46 +00:00
Eric Christopher 74892d4f1f In progress on 32-bit addends. 
llvm-svn: 106154
 2010-06-16 21:32:38 +00:00
Daniel Dunbar aa627c39e4 MC: Simplify MCAssembler::isSymbolLinkerVisible to only take an MCSymbol. 
llvm-svn: 106142
 2010-06-16 20:04:29 +00:00
Eric Christopher 2092dc2acd Fix indentation. 
llvm-svn: 106072
 2010-06-16 00:26:36 +00:00
Eric Christopher a86c2bdd2c Some more work on mach-o TLV relocations. 
llvm-svn: 106062
 2010-06-15 22:59:05 +00:00
Eric Christopher eaddfac539 Rearrange conditionals so we don't get caught with the correct type as wrong. 
llvm-svn: 104793
 2010-05-27 00:52:31 +00:00
Daniel Dunbar b34440a6a8 MC: Eliminate MCAsmFixup, replace with MCFixup. 
llvm-svn: 104699
 2010-05-26 15:18:56 +00:00
Daniel Dunbar 353a91ff76 MC: Use accessors for access to MCAsmFixup. 
llvm-svn: 104697
 2010-05-26 15:18:31 +00:00
Eric Christopher e7b64dcc1e Start adding mach-o tls reloc support. 
llvm-svn: 104651
 2010-05-26 00:02:12 +00:00
Benjamin Kramer 7c3e230cd1 Reduce string trashing. 
llvm-svn: 104223
 2010-05-20 14:14:22 +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
Daniel Dunbar f16c12d7a1 MC/Mach-O: Remove some FIXMEs. 
llvm-svn: 104032
 2010-05-18 17:28:20 +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 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 7c6f0e3827 MC/Mach-O: As Kevin pointed out, 'Address' is really an offset -- rename to clarify. 
llvm-svn: 103526
 2010-05-11 23:53:07 +00:00
Daniel Dunbar 795baa1972 MC/Mach-O: Fix a crash on invalid. 
llvm-svn: 103525
 2010-05-11 23:53:05 +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
Daniel Dunbar 7de3106a89 MC/Mach-O: Factor out doesSymbolRequireExternRelocation. 
llvm-svn: 103442
 2010-05-10 23:15:13 +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
Benjamin Kramer 53dd088b58 Various MSVC warning fixes about truncated 64 bit shifts and const pointers passed to free. 
llvm-svn: 100767
 2010-04-08 15:25:57 +00:00
Chris Lattner 2104b8d36e rename llvm::llvm_report_error -> llvm::report_fatal_error 
llvm-svn: 100709
 2010-04-07 22:58:41 +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 951459740c MC/Mach-O: Switch to MCSectionData::getOrdinal. 
llvm-svn: 99504
 2010-03-25 08:08:54 +00:00
Daniel Dunbar eaa792f0d9 Fix -Asserts warning. 
llvm-svn: 99499
 2010-03-25 07:10:05 +00:00
Daniel Dunbar 5b07334c0d MC: Route access to SectionData offset and file size through MCAsmLayout. 
llvm-svn: 99474
 2010-03-25 02:00:07 +00:00