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path: root/lib/MC/MCAssembler.cpp
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2010-03-13MC/Mach-O: PCrel relocations weren't using the right base address, they areDaniel Dunbar
relative to the fragment address, not its offset. This was masked by the text section normally being at address 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98420 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12MC/Mach-O: Implement initial support for relaxation.Daniel Dunbar
- The implementation is currently very brain dead and inefficient, but I have a clear plan on how to fix it. - The good news is, it works and correctly assembles 403.gcc (when built with Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g', the resulting binary is exactly equivalent to that when built with the system assembler. So it probably works! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12MC: Factor out MCAssembler::EvaluateFixup, and simplify.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98381 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11MC/Mach-O: Add MCSymbolData::getAddress() utility.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98266 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the ↵Daniel Dunbar
assembly time value of variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11MC/Mach-O: Start passing in the basic MCAsmLayout object.Daniel Dunbar
- Also, drop the current location part of AsmLayout, I think I prefer to implement this via explicit symbols. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98240 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11MC: Provide MCAssembler with a TargetAsmBackend.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10MC/Mach-O: Use the MCAssembler symbol map instead of reconstructing.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98187 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10MC/Mach-O: Resolve a FIXME; these relocation types are no longer semanticaly ↵Daniel Dunbar
different. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98120 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10MC/Mach-O: Use the SECTDIFF relocation type for (A - B + constant) where A ↵Daniel Dunbar
is external. - I'm not sure why, but this is what 'as' does. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98115 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel ↵Daniel Dunbar
adjustment when determining if we need a scattered relocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98082 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09MC/Mach-O: Also set the PCrel bit in the second half of paired relocation ↵Daniel Dunbar
entries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98081 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09MC/Mach-O: Don't generate relocations for PCrel fixups to local labels.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98080 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09MC/Mach-O: Tweak .dump() formatting.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98028 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09MC/Mach-O: Don't adjust section sizes when aligning zero fill sections, just ↵Daniel Dunbar
pad the address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98027 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08MC/Macho-O: Align the zerofill section itself to the maximum alignment.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08MC/Mach-O: Fix address compution for zero fill sections.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08MC/Mach-O: Error out instead of crashing on invalid scattered relocation ↵Daniel Dunbar
expressions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97983 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23This is the second patch to allow x86 code to be aligned with optimal nops.Kevin Enderby
With the compiler changed to use EmitCodeAlignment() it does change the functionality. But X86 assembly code assembled with llvm-mc does not change its output. For that we will eventually change the assembler frontend to detect a '.align x, 0x90' when used in a section that 'hasInstructions' and use EmitCodeAlignment, but will wait until we have better target hooks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96988 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23This is the first patch to put the needed bits in place to eventually allow codeKevin Enderby
to be aligned with optimal nops. This patch does not change any functionality and when the compiler is changed to use EmitCodeAlignment() it should also not change the resulting output. Once the compiler change is made and everything looks good the next patch with the table of optimal X86 nops will be added to WriteNopData() changing the output. There are many FIXMEs in this patch which will be removed when we have better target hooks (coming soon I hear). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17MC/Mach-O: Update fixup values for change to X86 offsets.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96532 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Pacify gcc-4.5, which warns (correctly) that these switches haveDuncan Sands
cases that are not part of the enum. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96477 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Fix pcrel relocations. Oh and,Daniel Dunbar
-- ddunbar@ozzy:tmp$ clang -m32 -integrated-as hello.c && ./a.out hello world! -- git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96096 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MC/Mach-O: Start emitting fixups/relocations for instructions.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96095 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Switch MCAsmFixup to storing MCFixupKind instead of just a size.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96094 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Sink fixup list into MCDataFragment.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic ↵Daniel Dunbar
expressions can always be emitted as data + fixups. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Start applying fixups in the data section.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96090 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Add assorted dump() methods.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96089 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11MC: Move assembler-backend's fixup list into the fragment.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95926 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11MC: Move MCSectionData::Fixup out to MCAsmFixup.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09llvm-mc: Add --show-fixups option, for displaying the instruction fixup ↵Daniel Dunbar
information in the asm comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95710 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02MC/Mach-O: Set SOME_INSTRUCTIONS bit for sections.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Add a new top-level MachO.h file for manifest constants, fixing Chris Lattner
a layering violation from MC -> Target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-19Remove this fixme, looking at the linker source, all targets pad to 4 bytes.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93835 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06Pass StringRef by value.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16Minor formatting tweaks.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84235 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16MC: Switch assembler API to using MCExpr instead of MCValue.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84234 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-01llvm-mc: Store MCSymbolData value as a pointer (to make MSVC happy).Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80652 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-31llvm-mc: Make MCSymbolData symbol member const.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80573 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-31llvm-mc: Add MCContext to MCAssembler.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80572 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-28llvm-mc: Support .comm emission.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-28llvm-mc: Support .zerofill emission.Daniel Dunbar
- I'm still trying to figure out the cleanest way to implement this and match the assembler, currently there are some substantial differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80347 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-28llvm-mc: Tweak section alignment and size computation to match 'as' closer.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80345 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-28llvm-mc: Fix thinko in emitting values.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27Try to make MSVC just a little happier.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80187 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26llvm-mc/Mach-O: Don't put assembler temporary labels in the symbol table.Daniel Dunbar
- I moved section creation back into AsmParser. I think policy decisions like this should be pushed higher, not lower, when possible (in addition the assembler has flags which change this behavior, for example). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80162 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26llvm-mc/Mach-O: Set .subsections_via_symbols flag properly.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26llvm-mc/Mach-O: Add support for relocations.Daniel Dunbar
- I haven't really tried to find the "right" way to store the fixups or apply them, yet. This works, but isn't particularly elegant or fast. - Still no evaluation support, so we don't actually ever not turn a fixup into a relocation entry. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26llvm-mc/Mach-O: Move symbol indices into the MCSymbolData structure.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80088 91177308-0d34-0410-b5e6-96231b3b80d8
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