1. 03 May, 2007 1 commit
  2. 22 Jan, 2007 1 commit
  3. 13 Dec, 2006 1 commit
    • wolfgang.thaller@gmx.net's avatar
      PowerPC NCG: support conditional branches outside +-32KB · e4c8d2b1
      wolfgang.thaller@gmx.net authored
      Work around the PowerPC architecture's +-32KB limitation for conditional
      branches by conditionally skipping an unconditional branch instead
      (unconditional branches have a +-32MB range).
      
      This requires an extra pass over the basic blocks for each CmmTop after
      block sequencing, to determine which branches are "far".
      
      Fixes ticket #709, "Fixup too large" error with -fasm on PowerPC
      e4c8d2b1
  4. 11 Dec, 2006 1 commit
  5. 11 Oct, 2006 1 commit
  6. 07 Apr, 2006 1 commit
    • Simon Marlow's avatar
      Reorganisation of the source tree · 0065d5ab
      Simon Marlow authored
      Most of the other users of the fptools build system have migrated to
      Cabal, and with the move to darcs we can now flatten the source tree
      without losing history, so here goes.
      
      The main change is that the ghc/ subdir is gone, and most of what it
      contained is now at the top level.  The build system now makes no
      pretense at being multi-project, it is just the GHC build system.
      
      No doubt this will break many things, and there will be a period of
      instability while we fix the dependencies.  A straightforward build
      should work, but I haven't yet fixed binary/source distributions.
      Changes to the Building Guide will follow, too.
      0065d5ab
  7. 21 Jul, 2005 1 commit
  8. 09 Jun, 2005 1 commit
    • wolfgang's avatar
      [project @ 2005-06-09 05:55:40 by wolfgang] · af0c406d
      wolfgang authored
      Registerised support for Darwin/x86, both NCG and mangled.
      
      *) -fPIC doesn't work yet with -fvia-C.
      *) Apple officially requires the stack to be 16-byte-aligned,
         GHC ignores this for now.
      af0c406d
  9. 27 Apr, 2005 2 commits
  10. 08 Apr, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-04-08 09:54:54 by simonmar] · aff2e3f0
      simonmar authored
      x86_64 hacking:
      
        - use %rip-relative addressing in a couple of places
        - floating-point comparisons handle NaN properly
      
      I believe the x86_64 NCG is now ready for prime time.  It is
      successfully bootstrapping the compiler, and I think this fixes the
      last of the test failures.
      aff2e3f0
  11. 04 Apr, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-04-04 15:54:18 by simonmar] · 61988d63
      simonmar authored
      Use the imul instruction natively, rather than the braindead wrapper
      around it.  The register allocator has been able to handle the fixed
      register usage of imul for a while now.  Also, the wrapper was broken
      on x86_64.
      61988d63
  12. 01 Apr, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-04-01 12:14:29 by simonmar] · 6c554010
      simonmar authored
      First cut at the x86_64 native code generator.  Lots of code is shared
      with i386, but floating point uses SSE2.
      
      This more or less works, the things I know that don't work are:
      
        - the floating-point primitives (sin, cos etc.) are missing
        - floating-point comparisons involving NaN are wrong
        - there's no PIC support yet
      
      Also, I have a long list of small things to fix up to improve
      performance.
      
      I think the small memory model is assumed, for now.
      6c554010
  13. 31 Mar, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-03-31 10:16:33 by simonmar] · 853e20a3
      simonmar authored
      Tweaks to get the GHC sources through Haddock.  Doesn't quite work
      yet, because Haddock complains about the recursive modules.  Haddock
      needs to understand SOURCE imports (it can probably just ignore them
      as a first attempt).
      853e20a3
  14. 28 Jan, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-01-28 12:55:17 by simonmar] · 153b9cb9
      simonmar authored
      Rationalise the BUILD,HOST,TARGET defines.
      
      Recall that:
      
        - build is the platform we're building on
        - host is the platform we're running on
        - target is the platform we're generating code for
      
      The change is that now we take these definitions as applying from the
      point of view of the particular source code being built, rather than
      the point of view of the whole build tree.
      
      For example, in RTS and library code, we were previously testing the
      TARGET platform.  But under the new rule, the platform on which this
      code is going to run is the HOST platform.  TARGET only makes sense in
      the compiler sources.
      
      In practical terms, this means that the values of BUILD, HOST & TARGET
      may vary depending on which part of the build tree we are in.
      
      Actual changes:
      
       - new file: includes/ghcplatform.h contains platform defines for
         the RTS and library code.
      
       - new file: includes/ghcautoconf.h contains the autoconf settings
         only (HAVE_BLAH).  This is so that we can get hold of these
         settings independently of the platform defines when necessary
         (eg. in GHC).
      
       - ghcconfig.h now #includes both ghcplatform.h and ghcautoconf.h.
      
       - MachRegs.h, which is included into both the compiler and the RTS,
         now has to cope with the fact that it might need to test either
         _TARGET_ or _HOST_ depending on the context.
      
       - the compiler's Makefile now generates
           stage{1,2,3}/ghc_boot_platform.h
         which contains platform defines for the compiler.  These differ
         depending on the stage, of course: in stage2, the HOST is the
         TARGET of stage1.  This was wrong before.
      
       - The compiler doesn't get platform info from Config.hs any more.
         Previously it did (sometimes), but unless we want to generate
         a new Config.hs for each stage we can't do this.
      
       - GHC now helpfully defines *_{BUILD,HOST}_{OS,ARCH} automatically
         in CPP'd Haskell source.
      
       - ghcplatform.h defines *_TARGET_* for backwards compatibility
         (ghcplatform.h is included by ghcconfig.h, which is included by
         config.h, so code which still #includes config.h will get the TARGET
         settings as before).
      
       - The Users's Guide is updated to mention *_HOST_* rather than
         *_TARGET_*.
      
       - coding-style.html in the commentary now contains a section on
         platform defines.  There are further doc updates to come.
      
      Thanks to Wolfgang Thaller for pointing me in the right direction.
      153b9cb9
  15. 16 Jan, 2005 1 commit
    • wolfgang's avatar
      [project @ 2005-01-16 05:31:39 by wolfgang] · 7a1b0a6c
      wolfgang authored
      A first stab at position independent code generation for i386-linux.
      It doesn't work yet, but it shouldn't break anything.
      
      What we need now is one or both of the following:
      a) A volunteer to implement PIC for x86 -fvia-C
          (I definitely refuse to touch any piece of code that contains
           both Perl and x86 assembly).
      b) A volunteer to improve the NCG to the point where it can compile
         the RTS (so we won't need point a).
      7a1b0a6c
  16. 07 Oct, 2004 1 commit
    • wolfgang's avatar
      [project @ 2004-10-07 15:54:03 by wolfgang] · b4d045ae
      wolfgang authored
      Position Independent Code and Dynamic Linking Support, Part 1
      
      This commit allows generation of position independent code (PIC) that fully supports dynamic linking on Mac OS X and PowerPC Linux.
      Other platforms are not yet supported, and there is no support for actually linking or using dynamic libraries - so if you use the -fPIC or -dynamic code generation flags, you have to type your (platform-specific) linker command lines yourself.
      
      
      nativeGen/PositionIndependentCode.hs:
      New file. Look here for some more comments on how this works.
      
      cmm/CLabel.hs:
      Add support for DynamicLinkerLabels and PIC base labels - for use inside the NCG.
      needsCDecl: Case alternative labels now need C decls, see the codeGen/CgInfoTbls.hs below for details
      
      cmm/Cmm.hs:
      Add CmmPicBaseReg (used in NCG),
      and CmmLabelDiffOff (used in NCG and for offsets in info tables)
      
      cmm/CmmParse.y:
      support offsets in info tables
      
      cmm/PprC.hs:
      support CmmLabelDiffOff
      Case alternative labels now need C decls (see the codeGen/CgInfoTbls.hs for details), so we need to pprDataExterns for info tables.
      
      cmm/PprCmm.hs:
      support CmmLabelDiffOff
      
      codeGen/CgInfoTbls.hs:
      no longer store absolute addresses in info tables, instead, we store offsets.
      Also, for vectored return points, emit the alternatives _after_ the vector table. This is to work around a limitation in Apple's as, which refuses to handle label differences where one label is at the end of a section. Emitting alternatives after vector info tables makes sure this never happens in GHC generated code. Case alternatives now require prototypes in hc code, though (see changes in PprC.hs, CLabel.hs).
      
      main/CmdLineOpts.lhs:
      Add a new option, -fPIC.
      
      main/DriverFlags.hs:
      Pass the correct options for PIC to gcc, depending on the platform. Only for powerpc for now.
      
      nativeGen/AsmCodeGen.hs:
      Many changes...
      Mac OS X-specific management of import stubs is no longer, it's now part of a general mechanism to handle such things for all platforms that need it (Darwin [both ppc and x86], Linux on ppc, and some platforms we don't support).
      Move cmmToCmm into its own monad which can accumulate a list of imported symbols. Make it call cmmMakeDynamicReference at the right places.
      
      nativeGen/MachCodeGen.hs:
      nativeGen/MachInstrs.hs:
      nativeGen/MachRegs.lhs:
      nativeGen/PprMach.hs:
      nativeGen/RegAllocInfo.hs:
      Too many changes to enumerate here, PowerPC specific.
      
      nativeGen/NCGMonad.hs:
      NatM still tracks imported symbols, as more labels can be created during code generation (float literals, jump tables; on some platforms all data access has to go through the dynamic linking mechanism).
      
      driver/mangler/ghc-asm.lprl:
      Mangle absolute addresses in info tables to offsets.
      Correctly pass through GCC-generated PIC for Mac OS X and powerpc linux.
      
      includes/Cmm.h:
      includes/InfoTables.h:
      includes/Storage.h:
      includes/mkDerivedConstants.c:
      rts/GC.c:
      rts/GCCompact.c:
      rts/HeapStackCheck.cmm:
      rts/Printer.c:
      rts/RetainerProfile.c:
      rts/Sanity.c:
      Adapt to the fact that info tables now contain offsets.
      
      rts/Linker.c:
      Mac-specific: change machoInitSymbolsWithoutUnderscore to support PIC.
      b4d045ae
  17. 13 Aug, 2004 1 commit