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* Fix pcrel relocations that cross sections.Rafael Espindola2010-12-071-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121107 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a crash reduced from gcc produced assembly.Rafael Espindola2010-12-071-8/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121085 91177308-0d34-0410-b5e6-96231b3b80d8
* Sorry for such a large commit. The summary is that only MachO cares about theRafael Espindola2010-12-071-16/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121076 91177308-0d34-0410-b5e6-96231b3b80d8
* use getSymbolOffset.Rafael Espindola2010-12-061-1/+1
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* Another use of getSymbolOffset.Rafael Espindola2010-12-061-4/+8
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* Add support for binary encoding of ARM 'adr' instructions referencing constantJim Grosbach2010-12-021-1/+6
| | | | | | pool entries (LEApcrel pseudo). Ongoing saga of rdar://8542291. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120635 91177308-0d34-0410-b5e6-96231b3b80d8
* Define generic 1, 2 and 4 byte pc relative relocations. They are commonRafael Espindola2010-11-281-6/+6
| | | | | | and at least the 4 byte one will be needed to implement the .cfi_* directives. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120240 91177308-0d34-0410-b5e6-96231b3b80d8
* macho-dump: Add support for dumping relocation entries.Daniel Dunbar2010-11-271-14/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120216 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a comment.Daniel Dunbar2010-11-271-2/+1
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* Reduce nesting.Daniel Dunbar2010-11-271-20/+26
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* MC/Mach-O: Migrate more constants into MachOFormat.h.Daniel Dunbar2010-11-271-104/+37
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120188 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: Introduce Object/MachOFormat for describing purely platform / machineDaniel Dunbar2010-11-271-38/+24
| | | | | | | independent information on the Mach object format, and move some stuff from MachObjectWriter.cpp there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120186 91177308-0d34-0410-b5e6-96231b3b80d8
* make isVirtualSection a virtual method on MCSection. Chris' suggestion.Rafael Espindola2010-11-171-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119547 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: Simplify Mach-O and ELF object writer implementations.Daniel Dunbar2010-11-131-59/+13
| | | | | | - What was I thinking????? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118992 91177308-0d34-0410-b5e6-96231b3b80d8
* Trailing whitespace.Jim Grosbach2010-11-111-5/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118831 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow targets to specify the MachO CPUType/CPUSubtype information.Jim Grosbach2010-11-051-7/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118288 91177308-0d34-0410-b5e6-96231b3b80d8
* On ELF we need to know which symbols are used in relocations to decide ifRafael Espindola2010-10-051-1/+1
| | | | | | | they should be in the symbol table or not. Instead of "guessing", just compute the symbol table after the relocations are known. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115619 91177308-0d34-0410-b5e6-96231b3b80d8
* This adds a Darwin x86_64 relocation encoding for a subtraction expressionKevin Enderby2010-10-021-13/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115389 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly produce R_X86_64_32 or R_X86_64_32S.Rafael Espindola2010-09-301-0/+2
| | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115134 91177308-0d34-0410-b5e6-96231b3b80d8
* Make it possible for the MCObjectWriter to decide if a given fixup is fullyRafael Espindola2010-09-301-0/+118
| | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115131 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused argument.Rafael Espindola2010-09-271-3/+3
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* MC/Mach-O/i386: Fix a crash in relocation handling.Daniel Dunbar2010-09-171-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114176 91177308-0d34-0410-b5e6-96231b3b80d8
* silence a vc2010 warning: " result of 32-bit shift implicitly converted toChris Lattner2010-08-161-1/+1
| | | | | | | 64 bits (was 64-bit shift intended?)", pointed out by 'nobled' on llvmdev git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111148 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "MC/MachO: Fix possible null pointer dereference."Michael J. Spencer2010-08-101-1/+1
| | | | | | | | This reverts commit 110575. Target.isAbsolute() is true if SD would be null. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110683 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/MachO: Fix possible null pointer dereference.Michael J. Spencer2010-08-091-1/+1
| | | | | | Discovered by Microsoft Visual Studio 2010 Code Analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110575 91177308-0d34-0410-b5e6-96231b3b80d8
* finish up support for callw: PR7195Chris Lattner2010-07-071-0/+2
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* The variable "Value" is carefully set to Layout.getSymbolAddress,Duncan Sands2010-06-291-4/+0
| | | | | | | but then not actually used - maybe a bug? Remove the variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107137 91177308-0d34-0410-b5e6-96231b3b80d8
* Get the addend correct for i386 pic.Eric Christopher2010-06-221-1/+7
| | | | | | | Thanks Daniel! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106608 91177308-0d34-0410-b5e6-96231b3b80d8
* Update comment.Eric Christopher2010-06-171-1/+2
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* In progress on 32-bit addends.Eric Christopher2010-06-161-1/+7
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* MC: Simplify MCAssembler::isSymbolLinkerVisible to only take an MCSymbol.Daniel Dunbar2010-06-161-2/+2
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* Fix indentation.Eric Christopher2010-06-161-4/+4
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* Some more work on mach-o TLV relocations.Eric Christopher2010-06-151-0/+38
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* Rearrange conditionals so we don't get caught with the correct type as wrong.Eric Christopher2010-05-271-3/+3
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* MC: Eliminate MCAsmFixup, replace with MCFixup.Daniel Dunbar2010-05-261-4/+4
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* MC: Use accessors for access to MCAsmFixup.Daniel Dunbar2010-05-261-12/+14
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* Start adding mach-o tls reloc support.Eric Christopher2010-05-261-2/+8
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* Reduce string trashing.Benjamin Kramer2010-05-201-2/+2
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* MC/Mach-O: Implement support for setting indirect symbol table offset in ↵Daniel Dunbar2010-05-181-3/+14
| | | | | | | | section header. Also, create symbol data for LHS of assignment, to match 'as' symbol ordering better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104033 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: Remove some FIXMEs.Daniel Dunbar2010-05-181-7/+3
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* MC/Mach-O/x86_64: Darwin's special "signed_N" relocation types should only beDaniel Dunbar2010-05-141-23/+23
| | | | | | used to replace a normal relocation, not a reference to a GOT entry. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103789 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O/x86_64: Fix PCrel adjustment for x86_64, which was using the fixupDaniel Dunbar2010-05-111-1/+2
| | | | | | offset instead of the fixup address as intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103527 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: As Kevin pointed out, 'Address' is really an offset -- rename to ↵Daniel Dunbar2010-05-111-11/+11
| | | | | | clarify. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103526 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: Fix a crash on invalid.Daniel Dunbar2010-05-111-1/+4
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* MC/Mach-O: Fix another mismatch with .weak_definition, we shouldn't use aDaniel Dunbar2010-05-101-9/+15
| | | | | | scattered relocation entry with a .weak_definition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103443 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: Factor out doesSymbolRequireExternRelocation.Daniel Dunbar2010-05-101-10/+20
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* Fix i386 relocations to Weak Definitions. The relocation entries should beKevin Enderby2010-05-071-1/+12
| | | | | | | | external and the item to be relocated should not have the address of the symbol added in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103302 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O: Mark absolute variable's appropriately, and add Mach-O support forDaniel Dunbar2010-05-051-2/+2
| | | | | | | writing them. - <rdar://problem/7885351> integrated assembler broken for i386 objc code git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103112 91177308-0d34-0410-b5e6-96231b3b80d8
* MC/Mach-O/x86_64: Relocations in debug sections should use local relocationsDaniel Dunbar2010-05-051-0/+11
| | | | | | | when possible. - <rdar://problem/7934873> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103092 91177308-0d34-0410-b5e6-96231b3b80d8
* Various MSVC warning fixes about truncated 64 bit shifts and const pointers ↵Benjamin Kramer2010-04-081-2/+2
| | | | | | passed to free. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100767 91177308-0d34-0410-b5e6-96231b3b80d8
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