Add -DNO_REGS to SRC_CC_OPTS.

Record details of the fptools/mk/build.mk required to build Hugs.

Fix various compile-time warnings in the assembler and evaluator.

Corrected a typo (omitted space).

Undefine NO_REGS.  Seems unneccessary since the driver supplies it anyway
when compiling the RTS, and this duplicate defn generates a lot of warnings.

Reorder tests in whatIs() to try for most common options first.

Typo: changed ($Var) to $(Var) in test to set SplitObjs.

Committing the Makefile, too, might be a good idea: Removed ctypes.

* Changed a backslash at EOL to the word "backslash". Using cpp in
  conjunction with Haskell is a real hack...

* Renamed the module Ctypes to Ctype, because CTypes is (soon) a
  module from package lang. I'm not sure if two files differing only
  in their case work under "the" OS. Just to be sure...

Detect threads that are blocked on themselves (i.e. black holed), and
raise NonTermination exceptions.  We only do this when the system is
deadlocked, so as not to introduce unnecessary overhead in the normal
case.

Replaced last remnants of C in the scanner/parser with carefully tuned
Haskell. TODO: Test with GHC < 3.03

change a bunch of externs into statics.  This fixes a long-standing
bug and should eliminate the annoying "<blah> was declared extern and
later static" warnings from gcc.

Put the extern declarations *outside* the function body for a
CCodeBlock.  This will enable us to give "extern" declarations for
variables that have scope static to the current module.

Replaced SGML2INFO stuff (which is no longer supported) with SGML2PS (which
is, and may well be useful to some).

*argl* Sorry, my usual Monday-typos...

shutdownHaskellAndExit is "safe" again

Name qualification
~~~~~~~~~~~~~~~~~~
Yet another wilbble on the recent renamer fix, this
time to make sure that names are printed unqualified
if they should be.    Sigh.

Interface file reading
~~~~~~~~~~~~~~~~~~~~~~
Make interface files reading more robust.  
  * If the old interface file is unreadable, don't fail. [bug fix]

  * If the old interface file mentions interfaces 
    that are unreadable, don't fail. [bug fix]

  * When we can't find the interface file, 
    print the directories we are looking in.  [feature]

Removed a last flaw and use `cvs export' instead of `cvs checkout' now.

Adding a bunch of `unsafe's to foreign imports. TODO: Could somebody
verify that declaring shutdownHaskellAndExit as unsafe is OK?

The NCG doesn't like `foreign label' yet, so addrOf_ErrorHdrHook is a
C function now.

Handle sameMutVar#, sameMVar#, writeForeignObj#

Handle ThreadIdRep. Output warnings for {Word,Int}64Rep, returning a
completely bogus size (for testing NCG only).

Fixed typo in comment

The first version of a script that allows building rpm packages directly from
CVS.  It currently works for ghc only, but will be extended to cover the
other fptools.

It should work on all rpm-based systems, as I tried to avoid any dependency on
Red Hat systems (as far as I am aware of them).  In particular, the rpm build
process is carried out below /tmp instead of the standard /usr/src/redhat
hierarchy.

By default the cvs head of the anonymous repository is built, but cvs-style -d
-D, and -r options allow to built from a different repository and revision.

[This version is only half tested, because the CVS head seems to not build
anymore today.]

Wibble in recent RnEnv changes

This meant that things fell over when you try to
build the Prelude.  Fixed now.

The file list generation needed some more tweaking, but seems to work now.

Changed HSprel.dll to HSstd.dll

Changed HSprel.dll to HSstd.dll, as it should be.

Updated out-of-date comment about representation of StablePtr

Nuked trace message from NCG

NCG now handles writeBLAHOffAddr# primops

Remove some debug printing.

Handle TUPLE in substExpr().

Fix a renamer bug that meant we weren't getting
package information propagated properly.

Time for bye-byes for QueueTemplate.h.  The big reorganisation of the
BCO linker makes this unnecessary.

A total rewrite of the BCO assembler/linker, and rationalisation of
the code management and code generation phases of Hugs.

Problems with the old linker:

* Didn't have a clean way to insert a pointer to GHC code into a BCO.
  This meant CAF GC didn't work properly in combined mode.

* Leaked memory.  Each BCO, caf and constructor generated by Hugs had
  a corresponding malloc'd record used in its construction.  These
  records existed forever.  Pointers from the Hugs symbol tables into
  the runtime heap always went via these intermediates, for no apparent
  reason.

* A global variable holding a list of top-level stg trees was used
  during code generation.  It was hard to associate trees in this
  list with entries in the name/tycon tables.  Just too many
  mechanisms.

The New World Order is as follows:

* The global code list (stgGlobals) is gone.

* Each name in the name table has a .closure field.  This points
  to the top-level code for that name.  Before bytecode generation
  this points to a STG tree.  During bytecode generation but before
  bytecode linking it is a MPtr pointing to a malloc'd intermediate
  structure (an AsmObject).  After linking, it is a real live pointer
  into the execution heap (CPtr) which is treated as a root during GC.

  Because tuples do not have name table entries, tycons which are
  tuples also have a .closure field, which is treated identically
  to those of name table entries.

* Each module has a code list -- a list of names and tuples.  If you
  are a name or tuple and you have something (code, CAF or Con) which
  needs to wind up in the execution heap, you MUST be on your module's
  code list.  Otherwise you won't get code generated.

* Lambda lifting generates new name table entries, which of course
  also wind up on the code list.

* The initial phase of code generation for a module m traverses m's
  code list.  The stg trees referenced in the .closure fields are
  code generated, creating AsmObject (AsmBCO, AsmCAF, AsmCon) in
  mallocville.  The .closure fields then point to these AsmObjects.
  Since AsmObjects can be mutually recursive, they can contain
  references to:
     * Other AsmObjects            Asm_RefObject
     * Existing closures           Asm_RefNoOp
     * name/tycon table entries    Asm_RefHugs
  AsmObjects can also contain BCO insns and non-ptr words.

* A second copy-and-link phase copies the AsmObjects into the
  execution heap, resolves the Asm_Ref* items, and frees up
  the malloc'd entities.

* Minor cleanups in compile-time storage.  There are now 3 kinds of
  address-y things available:
     CPtr/mkCPtr/cptrOf    -- ptrs to Closures, probably in exec heap
                              ie anything which the exec GC knows about
     MPtr/mkMPtr/mptrOf    -- ptrs to mallocville, which the exec GC
                              knows nothing about
     Addr/mkAddr/addrOf    -- literal addresses (like literal ints)

* Many hacky cases removed from codegen.c.  Referencing code or
  data during code generation is a lot simpler, since an entity
  is either:
      a CPtr, in which case use it as is
      a MPtr -- stuff it into the AsmObject and the linker will fix it
      a name or tycon
             -- ditto

* I've checked, using Purify that, at least in standalone mode,
  no longer leaks mallocd memory.  Prior to this it would leak at
  the rate of about 300k per Prelude.

* Added this comment to the top of codegen.c.

Still to do:

* Reinstate peephole optimisation for BCOs.

* Nuke magic number headers in AsmObjects, used for debugging.

* Profile and accelerate.  Code generation is slower because linking
  is slower.  Evaluation GC is slower because markHugsObjects has
  slowed down.

* Make setCurrentModule ignore name table entries created by the
  lambda-lifter.

* Zap various #if 0's in codegen.c/Assembler.c.

* Zap CRUDE_PROFILING.

Zap unused revert_dead_CAFs.

Remove misleading comment about registerisation assumptions.

Add CMODE to switch conveniently between combined and standalone testing.