llvm-svn: 99217

MC: Change MCObjectWriter::RecordRelocation to take an MCFragment (instead of a MCDataFragment). Object files should only need the generic MCFragment features.

llvm-svn: 99205

llvm-svn: 99203

llvm-svn: 99202

 - MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.

llvm-svn: 98955

llvm-svn: 98954

llvm-svn: 98953

llvm-svn: 98952

llvm-svn: 98950

llvm-svn: 98949

llvm-svn: 98948

MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task.

llvm-svn: 98947

MC/Mach-O: Lift the fixup evaluation and application up (to the same place), and eliminate MCAsmFixup::FixedValue.

llvm-svn: 98944

MC/Mach-O: Factor out ExecutePostLayoutBinding, to separate the post-layout changes the object writer may need to make to the assembler from the actual .o writing.

llvm-svn: 98943

MC/Mach-O: Lift relocation emission logic a bit higher to separate evaluation / relocation handling from the actual .o writing.

llvm-svn: 98942

MC/Mach-O: Add isScatteredFixupFullyResolved, which implements the correct algorithm (used on x86_64) for determining whether an evaluated fixup is fully resolved (doesn't need relocation).
 - Test cases will follow, once we have x86_64 relocation support.

llvm-svn: 98926

 - These find the defining symbol which identifies the containing atom for a symbol or address. They are currently very slow, but will be eliminated eventually.

llvm-svn: 98925

llvm-svn: 98924

MC/Mach-O: Factor out isSymbolLinkerVisible method; "linker visible" is a made up term to refer to non-temporary labels + temporary labels in sections-which-require symbols. For Darwin, it corresponds to symbols which effectively define an atom.

llvm-svn: 98923

MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers.

llvm-svn: 98791

MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet).

llvm-svn: 98583

llvm-svn: 98582

llvm-svn: 98456

llvm-svn: 98454

relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.

llvm-svn: 98420

 - 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! :)

llvm-svn: 98396

llvm-svn: 98381

llvm-svn: 98266

MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables.

llvm-svn: 98241

 - Also, drop the current location part of AsmLayout, I think I prefer to implement this via explicit symbols.

llvm-svn: 98240

llvm-svn: 98222

llvm-svn: 98187

llvm-svn: 98120

 - I'm not sure why, but this is what 'as' does.

llvm-svn: 98115

MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation.

llvm-svn: 98082

llvm-svn: 98081

llvm-svn: 98080

llvm-svn: 98028

llvm-svn: 98027

llvm-svn: 97991