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revision 824, Tue May 8 21:31:05 2001 UTC revision 1047, Tue Jan 29 21:31:50 2002 UTC
# Line 8  Line 8 
8  The form of an entry should be:  The form of an entry should be:
9    
10  Name:  Name:
11  Date:  Date: yyyy/mm/dd
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2002/01/29
18    Tag: blume-20020129-INSTALL
19    Description:
20    
21    - Added somewhat detailed installation instructions (file INSTALL).
22    - Fixed curl-detection bug in config/install.sh.
23    - It is now possible to select the URL getter using the URLGETTER
24      environment variable:
25    
26          not set / "unknown"      --> automatic detection (script tries wget,
27                                       curl, and lynx)
28          "wget" / "curl" / "lynx" --> use the specified program (script "knows"
29                                       how to properly invoke them)
30          other                    --> use $URLGETTER directly, it must take
31                                       precisely two command-line arguments
32                                       (source URL and destination file name)
33    
34    ----------------------------------------------------------------------
35    Name: Matthias Blume
36    Date: 2002/01/28
37    Tag: blume-20020128-sparc-ccalls
38    Description:
39    
40    - Fixed problem with calculation of "used" registers in sparc-c-calls.
41    - Make use of the allocParam argument in sparc-c-calls.
42    
43    ----------------------------------------------------------------------
44    Name: Matthias Blume
45    Date: 2002/01/28
46    Tag: blume-20020128-allocParam
47    Description:
48    
49    John Reppy:  Changes c-calls API to accept client-callback for
50    allocating extra stack space.
51    me: Corresponding changes to mlriscGen (using a dummy argument that
52        does not change the current behavior).
53    
54    ----------------------------------------------------------------------
55    Name: Matthias Blume
56    Date: 2002/01/28 12:00:00
57    Tag: Release_110_38
58    Description:
59    
60    This time for real!!!
61    
62    ----------------------------------------------------------------------
63    Name: Matthias Blume
64    Date: 2002/01/28 10:56:00 EST
65    Tag: blume-20020128-retraction
66    Description:
67    
68    0. Retracted earlier 110.38.  (The Release_110_38 tag has been replaced
69       with blume-Release_110_38-retracted.)
70    
71    1. Fixed a problem with incorrect rounding modes in real64.sml.
72       (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
73    
74    2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
75       and enums fixed.  The naming of corresponding ML identifiers should
76       now be consistent again.
77    
78    ----------------------------------------------------------------------
79    Name: Allen Leung
80    Date: 2002/01/27
81    Tag: leunga-20020127-nowhere
82    Description:
83    
84       Added a target called nowhere in the configuration scripts.
85       Enabling this will build the MLRISC 'nowhere' tool (for translating
86       programs with where-clauses into legal SML code) during installation.
87    
88    ----------------------------------------------------------------------
89    Name: Matthias Blume
90    Date: 2002/01/25 21:27:00 EST
91    Tag: blume-Release_110_38-retracted
92    Description:
93    
94    Call it a (working) release!  Version is 110.38. Bootfiles are ready.
95    
96    README will be added later.
97    
98    !!! NOTE:  Re-tagged as blume-Release_110_38-retracted. Original tag
99    (Release_110_38) removed.  Reason: Last-minute bug fixes.
100    
101    ----------------------------------------------------------------------
102    Name: Matthias Blume
103    Date: 2002/01/25
104    Tag: blume-20020125-ffi
105    Description:
106    
107    A large number of tweaks and improvements to ml-nlffi-lib and
108    ml-nlffigen:
109    
110       - ML represenation types have been streamlined
111       - getter and setter functions work with concrete values, not abstract
112         ones where possible
113       - ml-nlffigen command line more flexible (see README file there)
114       - some bugs have been fixed (hopefully)
115    
116    ----------------------------------------------------------------------
117    Name: Lal George
118    Date: 2002/01/24
119    Tag: george-20020124-risc-ra-interface
120    Description:
121    
122       There is a dramatic simplification in the interface to the
123       register allocator for RISC architectures as a result of making
124       parallel copy instructions explicit.
125    
126    ----------------------------------------------------------------------
127    Name: Matthias Blume
128    Date: 2002/01/22
129    Tag: blume-20020122-x86-ccalls
130    Description:
131    
132    Bug fix for c-calls on x86 (having to do with how char- and
133    short-arguments are being handled).
134    
135    ----------------------------------------------------------------------
136    Name: Matthias Blume
137    Date: 2002/01/21
138    Tag: blume-20020121-ff
139    Description:
140    
141    Another day of fiddling with the FFI...
142    
143    1. Bug fix/workaround:  CKIT does not complain about negative array
144       dimensions, so ml-nlffigen has to guard itself against this possibility.
145       (Otherwise a negative dimension would send it into an infinite loop.)
146    
147    2. Some of the abstract types (light objects, light pointers, most "base"
148       types) in structure C are now eqtypes.
149    
150    3. Added constructors and test functions for NULL function pointers.
151    
152    ----------------------------------------------------------------------
153    Name: Matthias Blume
154    Date: 2002/01/18
155    Tag: blume-20020118-ready-for-new-release
156    Description:
157    
158    Made config/srcarchiveurl point to a new place.  (Will provide boot
159    files shortly.)
160    
161    Maybe we christen this to be 110.38?
162    
163    ----------------------------------------------------------------------
164    Name: Matthias Blume
165    Date: 2002/01/18
166    Tag: blume-20020118-more-ffifiddle
167    Description:
168    
169    Today's FFI fiddling:
170    
171      - Provided a structure CGetSet with "convenient" versions of C.Get.* and
172        C.Set.* that use concrete (MLRep.*) arguments and results instead
173        of abstract ones.
174    
175      - Provided word-style bit operations etc. for "int" representation
176        types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
177        and Long.
178    
179    ----------------------------------------------------------------------
180    Name: Matthias Blume
181    Date: 2002/01/18
182    Tag: blume-20020118-use-x86-fp
183    Description:
184    
185    Now that x86-fast-fp seems to be working, I turned it back on again
186    by default.  (Seems to work fine now, even with the FFI.)
187    
188    Other than that, I added some documentation about the FFI to
189    src/ml-nlffigen/README and updated the FFI test examples in
190    src/ml-nlffi-lib/Tests/*.
191    
192    ----------------------------------------------------------------------
193    Name: Allen Leung
194    Date: 2002/01/17
195    Tag: leunga-20020117-x86-fast-fp-call
196    Description:
197    
198       1. Fixed a problem with handling return fp values when x86's fast fp
199          mode is turned on.
200    
201       2. Minor pretty printing fix for cellset.  Print %st(0) as %st(0) instead
202          of %f32.
203    
204       3. Added a constructor INT32lit to the ast of MLRISC tools.
205    
206    ----------------------------------------------------------------------
207    Name: Matthias Blume
208    Date: 2002/01/16
209    Tag: blume-20020116-ffifiddle
210    Description:
211    
212    More fiddling with the FFI interface:
213    
214     - Make constness 'c instead of rw wherever possible.  This eliminates
215       the need for certain explicit coercions.  (However, due to ML's
216       value polymorphism, there will still be many cases where explicit
217       coercions are necessary.  Phantom types are not the whole answer
218       to modeling a subtyping relationship in ML.)
219    
220     - ro/rw coersions for pointers added.  (Avoids the detour through */&.)
221    
222     - "printf" test example added to src/ml-nlffi-lib/Tests.  (Demonstrates
223       clumsy workaround for varargs problem.)
224    
225    ----------------------------------------------------------------------
226    Name: Lal George
227    Date: 2002/01/15
228    Tag: <none>
229    Description:
230    
231    1. Since COPY instructions are no longer native to the architecture,
232       a generic functor can be used to implement the expandCopies function.
233    
234    2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
235       TEXT segment.
236    
237    ----------------------------------------------------------------------
238    Name: Matthias Blume
239    Date: 2002/01/15
240    Tag: blume-20020115-ffiupdates
241    Description:
242    
243    1. Fix for bug resulting in single-precision float values being returned
244       incorrectly from FFI calls.
245    
246    2. Small modifications to C FFI API:
247    
248        - memory-allocation routines return straight objects (no options)
249          and raise an exception in out-of-memory situations
250        - unsafe extensions to cast between function pointers and pointers
251          from/to ints
252        - added structure C_Debug as an alternative to structure C where
253          pointer-dereferencing (|*| and |*!) always check for null-pointers
254        - added open_lib' to DynLinkage;  open_lib' works like open_lib
255          but also takes a (possibly empty) list of existing library handles
256          that the current library depends on
257    
258    ----------------------------------------------------------------------
259    Name: Matthias Blume
260    Date: 2002/01/10
261    Tag: blume-20020110-newffigen
262    Description:
263    
264    1. Updates to portable graph code.
265    
266    2. Major update to ml-nlffigen and ml-nlffi-lib.  Things are much
267       more scalable now so that even huge interfaces such as the one
268       for GTK compile in finite time and space. :-)
269       See src/ml-nlffigen/README for details on what's new.
270    
271    ----------------------------------------------------------------------
272    Name: Lal George
273    Date: 2001/01/09 14:31:35 EST 2002
274    Tag: george-20011206-rm-native-copy
275    Description:
276    
277            Removed the native COPY and FCOPY instructions
278            from all the architectures and replaced it with the
279            explicit COPY instruction from the previous commit.
280    
281            It is now possible to simplify many of the optimizations
282            modules that manipulate copies. This has not been
283            done in this change.
284    
285    ----------------------------------------------------------------------
286    Name: Lal George
287    Date: 2001/12/06 16:50:13 EST 2001
288    Tag: george-20011206-mlrisc-instruction
289    Description:
290    
291    Changed the representation of instructions from being fully abstract
292    to being partially concrete. That is to say:
293    
294      from
295            type instruction
296    
297      to
298            type instr                              (* machine instruction *)
299    
300            datatype instruction =
301                LIVE of {regs: C.cellset, spilled: C.cellset}
302              | KILL of {regs: C.cellset, spilled: C.cellset}
303              | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
304              | ANNOTATION of {i: instruction, a: Annotations.annotation}
305              | INSTR of instr
306    
307    This makes the handling of certain special instructions that appear on
308    all architectures easier and uniform.
309    
310    LIVE and KILL say that a list of registers are live or killed at the
311    program point where they appear. No spill code is generated when an
312    element of the 'regs' field is spilled, but the register is moved to
313    the 'spilled' (which is present, more for debugging than anything else).
314    
315    LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
316    We used to generate:
317    
318            DEFFREG f1
319            f1 := f2 + f3
320            trapb
321    
322    but now generate:
323    
324            f1 := f2 + f3
325            trapb
326            LIVE {regs=[f1,f2,f3], spilled=[]}
327    
328    Furthermore, the DEFFREG (hack) required that all floating point instruction
329    use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
330    defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
331    in a cleaner alpha implementation. (Hopefully, intel will not get rid of
332    this architecture).
333    
334    COPYXXX is intended to replace the parallel COPY and FCOPY  available on
335    all the architectures. This will result in further simplification of the
336    register allocator that must be aware of them for coalescing purposes, and
337    will also simplify certain aspects of the machine description that provides
338    callbacks related to parallel copies.
339    
340    ANNOTATION should be obvious, and now INSTR represents the honest to God
341    machine instruction set!
342    
343    The <arch>/instructions/<arch>Instr.sml files define certain utility
344    functions for making porting easier -- essentially converting upper case
345    to lower case. All machine instructions (of type instr) are in upper case,
346    and the lower case form generates an MLRISC instruction. For example on
347    the alpha we have:
348    
349      datatype instr =
350         LDA of {r:cell, b:cell, d:operand}
351       | ...
352    
353      val lda : {r:cell, b:cell, d:operand} -> instruction
354        ...
355    
356    where lda is just (INSTR o LDA), etc.
357    
358    ----------------------------------------------------------------------
359    Name: Matthias Blume
360    Date: 2001/11/22 21:40:00 EST
361    Tag: Release_110_37
362    Description:
363    
364    Release 110.37.  This time for real.
365    
366    ----------------------------------------------------------------------
367    Name: Matthias Blume
368    Date: 2001/11/21 16:35:00 EST
369    Tag: blume-20011121-foot-in-mouth
370    Description:
371    
372    Removed the "Release_110_37" tag because of a serious bug.
373    This will be re-tagged once the bug is fixed.
374    
375    ----------------------------------------------------------------------
376    Name: Matthias Blume
377    Date: 2001/11/21 16:14:00 EST
378    Tag: blume-20011121-forgottenfile
379    Description:
380    
381    Forgot to add a file.  (Just a .tex-file -- part of
382    the CM manual source.)
383    
384    ----------------------------------------------------------------------
385    Name: Matthias Blume
386    Date: 2001/11/21 16:10:00 EST
387    Tag: blume-20011121-invalid_110_37
388    Description:
389    
390    Note: I removed the original tag "Release_110_37" from this commit
391          because we found a serious bug in all non-x86 backends.
392          - Matthias
393    
394    1. Modifications to the SML/NJ code generator and to the runtime system
395       so that code object name strings are directly inserted into code
396       objects at code generation time.  The only business the runtime system
397       has with this is now to read the name strings on occasions.
398       (The encoding of the name string has also changed somewhat.)
399    
400    2. CM now implements a simple "set calculus" for specifying export lists.
401       In particular, it is now possible to refer to the export lists of
402       other libraries/groups/sources and form unions as well as differences.
403       See the latest CM manual for details.
404    
405    3. An separate notion of "proxy" libraries has again be eliminated from
406       CM's model.  (Proxy libraries are now simply a special case of using
407       the export list calculus.)
408    
409    4. Some of the existing libraries now take advantage of the new set
410       calculus.
411       (Notice that not all libraries have been converted because some
412       of the existing .cm-files are supposed to be backward compatible
413       with 110.0.x.)
414    
415    5. Some cleanup in stand-alone programs.  (Don't use "exnMessage" -- use
416       "General.exnMessage"!  The former relies on a certain hook to be
417       initialized, and that often does not happen in the stand-alone case.)
418    
419    ----------------------------------------------------------------------
420    Name: Lal George
421    Date: 2001/11/21  13:56:18 EST
422    Tag: george-2001121-pseudo-ops
423    Description:
424    
425      Implemented a complete redesign of MLRISC pseudo-ops. Now there
426      ought to never be any question of incompatabilities with
427      pseudo-op syntax expected by host assemblers.
428    
429      For now, only modules supporting GAS syntax are implemented
430      but more should follow, such as MASM, and vendor assembler
431      syntax, e.g. IBM as, Sun as, etc.
432    
433    ----------------------------------------------------------------------
434    Name: Matthias Blume
435    Date: 2001/11/14 11:52:00 EST
436    Tag: blume-20011114-srcname
437    Description:
438    
439    1. Routed the name of the current source file to mlriscgen where it
440       should be directly emitted into the code object.  (This last part
441       is yet to be done.)
442    
443    2. Some cleanup of the pgraph code to make it match the proposal that
444       I put out the other day.  (The proposal notwithstanding, things are
445       still in flux here.)
446    
447    ----------------------------------------------------------------------
448    Name: Lal George
449    Date: 2001/11/14 09:44:04 EST
450    Tag:
451    Description:
452    
453      Fix for a backpatching bug reported by Allen.
454    
455      Because the boundary between short and long span-dependent
456      instructions is +/- 128, there are an astounding number of
457      span-dependent instructions whose size is over estimated.
458    
459      Allen came up with the idea of letting the size of span
460      dependent instructions be non-monotonic, for a maxIter
461      number of times, after which the size must be monotonically
462      increasing.
463    
464      This table shows the number of span-dependent instructions
465      whose size was over-estimated as a function of maxIter, for the
466      file Parse/parse/ml.grm.sml:
467    
468         maxIter            # of instructions:
469            10                      687
470            20                      438
471            30                      198
472            40                        0
473    
474      In compiling the compiler, there is no significant difference in
475      compilation speed between maxIter=10 and maxIter=40. Actually,
476      my measurements showed that maxIter=40 was a tad faster than
477      maxIter=10! Also 96% of the  files in the compiler reach a fix
478      point within 13 iterations, so fixing maxIter at 40, while high,
479      is okay.
480    
481    ----------------------------------------------------------------------
482    Name: Matthias Blume
483    Date: 2001/10/31 15:25:00 EST
484    Tag: blume-20011031-pgraph
485    Description:
486    
487    CKIT:
488    * Changed the "Function" constructor of type Ast.ctype to carry optional
489      argument identifiers.
490    * Changed the return type of TypeUtil.getFunction accordingly.
491    * Type equality ignores the argument names.
492    * TypeUtil.composite tries to preserve argument names but gives up quickly
493      if there is a mismatch.
494    
495    installation script:
496    * attempts to use "curl" if available (unless "wget" is available as well)
497    
498    CM:
499    * has an experimental implementation of "portable graphs" which I will
500      soon propose as an implementation-independent library format
501    * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
502    
503    NLFFI-LIB:
504    * some cleanup (all cosmetic)
505    
506    NLFFIGEN:
507    * temporarily disabled the mechanism that suppresses ML output for
508      C definitions whose identifiers start with an underscore character
509    * generate val bindings for enum constants
510    * user can request that only one style (light or heavy) is being used;
511      default is to use both (command-line arguments: -heavy and -light)
512    * fixed bug in handling of function types involving incomplete pointers
513    * generate ML entry points that take record arguments (i.e., using
514      named arguments) for C functions that have a prototype with named
515      arguments
516      (see changes to CKIT)
517    
518    ----------------------------------------------------------------------
519    Name: Allen Leung
520    Date: 2001/10/27 20:34:00 EDT
521    Tag: leunga-20011027-x86-fast-fp-call
522    Description:
523    
524       Fixed the bug described in blume-20010920-slowfp.
525    
526       The fix involves
527          1. generating FCOPYs in FSTP in ia32-svid
528          2. marking a CALL with the appropriate annotation
529    
530    ----------------------------------------------------------------------
531    Name: Matthias Blume
532    Date: 2001/10/16 11:32:00 EDT
533    Tag: blume-20011016-netbsd
534    Description:
535    
536    Underscore patch from Chris Richards (fixing problem with compiling
537    runtime system under recent NetBSD).
538    
539    ----------------------------------------------------------------------
540    Name: Allen Leung
541    Date: 2001/10/12 17:18:32 EDT 2001
542    Tag: leung-20011012-x86-printflowgraph
543    Description:
544    
545    X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
546    
547    ----------------------------------------------------------------------
548    Name: Lal George
549    Date: 2001/10/11 23:51:34 EDT
550    Tag: george-20011011-too-many-instrs
551    Description:
552    
553    The representation of a program point never expected to see more
554    than 65536 instructions in a basic block!
555    
556    ----------------------------------------------------------------------
557    Name: Lal George
558    Date: 2001/10/09 09:41:37 EDT
559    Tag: george-20011008-mlrisc-labels
560    Description:
561    
562    Changed the machine description files to support printing of
563    local and global labels in assembly code, based on host assembler
564    conventions.
565    
566    ----------------------------------------------------------------------
567    Name: Matthias Blume
568    Date: 2001/09/25 15:25:00 EDT
569    Tag: blume-20010925-exninfo
570    Description:
571    
572    I provided a non-hook implementation of exnName (at the toplevel) and
573    made the "dummy" implementation of exnMessage (at the toplevel) more
574    useful: if nothing gets "hooked in", then at least you are going to
575    see the exception name and a message indicating why you don't see more.
576    
577    [For the time being, programs that need exnMessage and want to use
578    ml-build should either use General.exnMessage (strongly recommended) or
579    refer to structure General at some other point so that CM sees a
580    static dependency.]
581    
582    [Similar remarks go for "print" and "use":  If you want to use their
583    functionality in stand-alone programs generated by ml-build, then use
584    TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
585    
586    ----------------------------------------------------------------------
587    Name: Matthias Blume
588    Date: 2001/09/20 17:28:00 EDT
589    Tag: blume-20010920-slowfp
590    Description:
591    
592    Allen says that x86-fast-fp is not safe yet, so I turned it off again...
593    
594    ----------------------------------------------------------------------
595    Name: Matthias Blume
596    Date: 2001/09/20 17:20:00 EDT
597    Tag: blume-20010920-canonicalpaths
598    Description:
599    
600    0. Updated the BOOT file (something that I forgot to do earlier).
601    
602    1. Small internal change to CM so that it avoids "/../" in filenames
603       as much as possible (but only where it is safe).
604    
605    2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
606       that arguments that contain delimiters are passed through correctly.
607       This change also means that all "special" arguments of the form
608       @SMLxxx... must come first.
609    
610    3. Changed install script to put relative anchor names for tool commands
611       into pathconfig.
612    
613    ----------------------------------------------------------------------
614    Name: Matthias Blume
615    >>>>>>> 1.169
616    Date: 2001/09/18 15:35:00 EDT
617    Tag: blume-20010918-readme11036
618    Description:
619    
620    Added README files.
621    
622    ----------------------------------------------------------------------
623    Name: Matthias Blume
624    Date: 2001/09/18 11:45:00 EDT
625    Tag: Release_110_36 (retag)
626    Description:
627    
628    Fixed mistake in config/preloads. Retagged as 110.36.
629    
630    ----------------------------------------------------------------------
631    Name: Matthias Blume
632    Date: 2001/09/18 09:40:00 EDT
633    Tag: Release_110_36_orig (tag changed)
634    Description:
635    
636    New version (110.36).  New bootfiles.
637    
638    ----------------------------------------------------------------------
639    Name: Matthias Blume
640    Date: 2001/09/14 16:15:00 EDT
641    Tag: blume-20010914-x86fastfp
642    Description:
643    
644    John committed some changes that Allen made, in particular a (hopefully)
645    correctly working version of the x86-fp module.
646    
647    I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
648    flag to "true".  Everything seems to compile to a fixpoint ok, and
649    "mandelbrot" speeds up by about 15%.
650    
651    ----------------------------------------------------------------------
652    Name: Matthias Blume
653    Date: 2001/09/13 11:20:00 EDT
654    Tag: blume-20010913-minimal
655    Description:
656    
657    1. Stefan Monnier's patch to fix a miscompilation problem that
658       was brought to light by John Reppy's work on Moby.
659    
660    2. Implemented a minimal "structure Compiler" that contains just
661       "version" and "architecture".  The minimal version will be
662       available when the full version is not.  This is for backward-
663       compatibility with code that wants to test Compiler.version.
664    
665    ----------------------------------------------------------------------
666    Name: Matthias Blume
667    Date: 2001/08/28 14:03:00 EDT
668    Tag: blume-20010828-ml-lex
669    Description:
670    
671    Fix for bug 1581, received from Neophytos Michael.
672    
673    ----------------------------------------------------------------------
674    Name: Matthias Blume
675    Date: 2001/08/27 11:20:00 EDT
676    Tag: blume-20010827-readme11035
677    Description:
678    
679    Fleshed out the README file for 110.35.
680    
681    ----------------------------------------------------------------------
682    Name: Matthias Blume
683    Date: 2001/08/24 17:10:00 EDT
684    Tag: Release_110_35
685    Description:
686    
687    New version number (110.35).  New bootfiles.
688    
689    ----------------------------------------------------------------------
690    Name: Lal George
691    Date: 2001/08/24 13:47:18 EDT 2001
692    Tag: george-20010824-MLRISC-graphs
693    Description:
694    
695     removed clusters from MLRISC completely and replaced with graphs.
696    
697    ----------------------------------------------------------------------
698    Name: Matthias Blume
699    Date: 2001/08/23 17:50:00 EDT
700    Tag: blume-20010823-toplevel
701    Description:
702    
703    - some reorganization of the code that implements various kinds of
704      environments in the compiler (static, dynamic, symbolic, combined)
705    - re-implemented the EnvRef module so that evalStream works properly
706      (if the stream contains references to "use", "CM.make", etc.)
707    - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
708    
709    ----------------------------------------------------------------------
710    Name: Matthias Blume
711    Date: 2001/08/20 15:50 EDT
712    Tag: blume20010820-slipup
713    Description:
714    
715    I forgot to commit a few files.  Here they are...
716    
717    ----------------------------------------------------------------------
718    Name: Matthias Blume
719    Date: 2001/08/20 15:35:00 EDT
720    Tag: blume-20010820-debugprof
721    Description:
722    
723    !!!! NEW BOOTFILES !!!!
724    
725    This is another round of reorganizing the compiler sources.  This
726    time the main goal was to factor out all the "instrumentation"
727    passes (for profiling and backtracing) into their own library.
728    The difficulty was to do it in such a way that it does not depend
729    on elaborate.cm but only on elabdata.cm.
730    
731    Therefore there have been further changes to both elaborate.cm and
732    elabdata.cm -- more "generic" things have been moved from the former
733    to the latter.  As a result, I was forced to split the assignment
734    of numbers indicating "primtyc"s into two portions: SML-generic and
735    SML/NJ-specific.  Since it would have been awkward to maintain,
736    I bit the bullet and actually _changed_ the mapping between these
737    numbers and primtycs.  The bottom line of this is that you need
738    a new set of bin- and bootfiles.
739    
740    I have built new bootfiles for all architectures, so doing a fresh
741    checkout and config/install.sh should be all you need.
742    
743    The newly created library's name is
744    
745        $smlnj/viscomp/debugprof.cm
746    
747    and its sources live under
748    
749        src/compiler/DebugProf
750    
751    ----------------------------------------------------------------------
752    Name: Matthias Blume
753    Date: 2001/08/15 17:15:00 EDT
754    Tag: blume-20010815-compreorg
755    Description:
756    
757    This is a first cut at reorganizing the CM libraries that make up the
758    core of the compiler.  The idea is to separate out pieces that could
759    be used independently by tools, e.g., the parser, the typechecker, etc.
760    
761    The current status is a step in this direction, but it is not quite
762    satisfactory yet.  Expect more changes in the future.
763    
764    Here is the current (new) organization...
765    
766        What used to be $smlnj/viscomp/core.cm is now divided into
767        six CM libraries:
768    
769             $smlnj/viscomp/basics.cm
770                           /parser.cm
771                           /elabdata.cm
772                           /elaborate.cm
773                           /execute.cm
774                           /core.cm
775    
776        The CM files for these libraries live under src/system/smlnj/viscomp.
777        All these libraries are proxy libraries that contain precisely
778        one CM library component.  Here are the locations of the components
779        (all within the src/compiler tree):
780    
781             Basics/basics.cm
782             Parse/parser.cm
783             ElabData/elabdata.cm
784             Elaborator/elaborate.cm
785             Execution/execute.cm
786             core.cm
787    
788         [This organization is the same that has been used already
789         for a while for the architecture-specific parts of the visible
790         compiler and for the old version of core.cm.]
791    
792         As you will notice, many source files have been moved from their
793         respective original locations to a new home in one of the above
794         subtrees.
795    
796         The division of labor between the new libraries is the following:
797    
798             basics.cm:
799                - Simple, basic definitions that pertain to many (or all) of
800                  the other libraries.
801             parser.cm:
802                - The SML parser, producing output of type Ast.dec.
803                - The type family for Ast is also defined and exported here.
804             elabdata.cm:
805                - The datatypes that describe input and output of the elaborator.
806                  This includes types, absyn, and static environments.
807             elaborator.cm:
808                - The SML/NJ type checker and elaborator.
809                  This maps an Ast.dec (with a given static environment) to
810                  an Absyn.dec (with a new static environment).
811                - This libraries implements certain modules that used to be
812                  structures as functors (to remove dependencies on FLINT).
813             execute.cm:
814                - Everything having to do with executing binary code objects.
815                - Dynamic environments.
816             core.cm:
817                - SML/NJ-specific instantiations of the elaborator and MLRISC.
818                - Top-level modules.
819                - FLINT (this should eventually become its own library)
820    
821    Notes:
822    
823    I am not 100% happy with the way I separated the elaborator (and its
824    data structures) from FLINT.  Two instances of the same problem:
825    
826        1. Data structures contain certain fields that carry FLINT-specific
827           information.  I hacked around this using exn and the property list
828           module from smlnj-lib.  But the fact that there are middle-end
829           specific fields around at all is a bit annoying.
830    
831        2. The elaborator calculates certain FLINT-related information.  I tried
832           to make this as abstract as I could using functorization, but, again,
833           the fact that the elaborator has to perform calculations on behalf
834           of the middle-end at all is not nice.
835    
836        3. Having to used exn and property lists is unfortunate because it
837           weakens type checking.  The other alternative (parameterizing
838           nearly *everything*) is not appealing, though.
839    
840    I removed the "rebinding =" warning hack because due to the new organization
841    it was awkward to maintain it.  As a result, the compiler now issues some of
842    these warnings when compiling init.cmi during bootstrap compilation. On
843    the plus side, you also get a warning when you do, for example:
844       val op = = Int32.+
845    which was not the case up to now.
846    
847    I placed "assign" and "deref" into the _Core structure so that the
848    code that deals with the "lazy" keyword can find them there.  This
849    removes the need for having access to the primitive environment
850    during elaboration.
851    
852    ----------------------------------------------------------------------
853    Name: Matthias Blume
854    Date: 2001/08/13
855    Tag: blume-20010813-closures
856    Description:
857    
858    This fix was sent to us by Zhong Shao.  It is supposed to improve the
859    performance of certain loops by avoiding needless closure allocation.
860    
861    ----------------------------------------------------------------------
862    Name: Lal George
863    Date: 2001/07/31 10:03:23 EDT 2001
864    Tag: george-20010731-x86-fmalloc
865    Description: Fixed bug in x86 calls
866    
867        There was a bug where call instructions would mysteriously
868        vanish. The call instruction had to be one that returned
869        a floating point value.
870    
871    ----------------------------------------------------------------------
872    Name: Lal George
873    Date: 2001/07/19 16:36:29 EDT 2001
874    Tag: george-20010719-simple-cells
875    Description:
876    
877    I have dramatically simplified the interface for CELLS in MLRISC.
878    
879    In summary, the cells interface is broken up into three parts:
880    
881      1. CellsBasis : CELLS_BASIS
882    
883            CellsBasis is a top level structure and common for all
884            architectures.  it contains the definitions of basic datatypes
885            and utility  functions over these types.
886    
887      2. functor Cells() : CELLS
888    
889            Cells generates an interface for CELLS that incorporates the
890            specific resources on the target architecture, such as the
891            presence of special register classes, their number and size,
892            and various useful substructures.
893    
894      3. <ARCH>CELLS
895    
896            e.g. SparcCells: SPARCCELLS
897    
898            <ARCH>CELLS usually contains additional bindings for special
899            registers  on the architecture, such as:
900    
901                    val r0 : cell           (* register zero *)
902                    val y : cell            (* Y register *)
903                    val psr : cell          (* processor status register *)
904                    ...
905    
906            The structure returned by applying the Cells functor is opened
907            in this interface.
908    
909    The main implication of all this is that the datatypes for cells is
910    split between CellsBasis and CELLS -- a fairly simple change for user
911    code.
912    
913    In the old scheme the CELLS interface had a definitional binding of
914    the form:
915    
916            signature CELLS = sig
917    
918               structure CellsBasis = CellsBasis
919    
920               ...
921    
922            end
923    
924    With all the sharing constraints that goes on in MLRISC, this old
925    design  quickly leads to errors such as:
926    
927            "structure definition spec inside of sharing ... "
928    
929    
930    and appears to require an unacceptable amount of sharing and where
931    constraint hackery.
932    
933    I think this error message (the interaction of definitional specs and
934    sharing) requires more explanation on our web page.
935    
936    ----------------------------------------------------------------------
937    Name: Matthias Blume
938    Date: 2001/07/19 15:00:00 EDT
939    Tag: blume-20010719-libreorg
940    Description:
941    
942    This update puts together a fairly extensive but straightforward change
943    to the way the libraries that implement the interactive system are
944    organized:
945    
946       The biggest change is the elimination of structure Compiler.  As a
947       replacement for this structure, there is now a CM library
948       (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
949       that exports all the substructures of the original structure Compiler
950       directly.  So instead of saying Compiler.Foo.bar one now simply
951       says Foo.bar.  (The CM libraries actually export a collection of
952       structures that is richer than the collection of substructures of
953       structure Compiler.)
954    
955       To make the transition smooth, there is a separate library called
956       $smlnj/compiler/compiler.cm which puts together and exports the
957       original structure Compiler (or at least something very close to it).
958    
959       There are five members of the original structure Compiler
960       that are not exported directly but which instead became members
961       of a new structure Backend (described by signature BACKEND).  These are:
962       structure Profile (: PROFILE), structure Compile (: COMPILE), structure
963       Interact (: INTERACT), structure Machine (: MACHINE), and val
964       architecture (: string).
965    
966       Structure Compiler.Version has become structure CompilerVersion.
967    
968       Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
969       by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
970       or x86, respectively.
971       Each of these exports the same frontend structures that
972       $smlnj/compiler.cm exports.  But they do not have a structure Backend
973       and instead export some structure <Arch>Backend where <Arch> is Alpha32,
974       Hppa, PPC, Sparc, or X86, respectively.
975    
976       Library $smlnj/compiler/all.cm exports the union of the exports of
977       $smlnj/compiler/<arch>.cm
978    
979       There are no structures <Arch>Compiler anymore, use
980       $smlnj/compiler/<arch>.cm instead.
981    
982       Library host-compiler-0.cm is gone.  Instead, the internal library
983       that instantiates CM is now called cm0.cm.  Selection of the host
984       compiler (backend) is no longer done here but. (Responsibility for it
985       now lies with $smlnj/compiler/current.cm.  This seems to be more
986       logical.)
987    
988       Many individual files have been moved or renamed.  Some files have
989       been split into multiple files, and some "dead" files have been deleted.
990    
991    Aside from these changes to library organization, there are also changes
992    to the way the code itself is organized:
993    
994       Structure Binfile has been re-implemented in such a way that it no
995       longer needs any knowledge of the compiler.  It exclusively deals
996       with the details of binfile layout.  It no longer invokes the
997       compiler (for the purpose of creating new prospective binfile
998       content), and it no longer has any knowledge of how to interpret
999       pickles.
1000    
1001       Structure Compile (: COMPILE) has been stripped down to the bare
1002       essentials of compilation.  It no longer deals with linking/execution.
1003       The interface has been cleaned up considerably.
1004    
1005       Utility routines for dealing with linking and execution have been
1006       moved into their own substructures.
1007    
1008       (The ultimate goal of these changes is to provide a light-weight
1009       binfile loader/linker (at least for, e.g., stable libraries) that
1010       does not require CM or the compiler to be present.)
1011    
1012    CM documentation has been updated to reflect the changes to library
1013    organization.
1014    
1015    ----------------------------------------------------------------------
1016    Name: Matthias Blume
1017    Date: 2001/07/10 17:30:00 EDT
1018    Tag: Release_110_34
1019    Description:
1020    
1021    Minor tweak to 110.34 (re-tagged):
1022    
1023      - README.html file added to CVS repository
1024      - runtime compiles properly under FreeBSD 3.X and 4.X
1025    
1026    ----------------------------------------------------------------------
1027    Name: Matthias Blume
1028    Date: 2001/07/10 17:30:00 EDT
1029    Tag: Release_110_34
1030    Description:
1031    
1032    New version number (110.34). New bootfiles.
1033    
1034    ----------------------------------------------------------------------
1035    Name: Matthias Blume
1036    Date: 2001/07/09 16:00:00 EDT
1037    Tag: blume-20010709-more-varargs
1038    Description:
1039    
1040    I changed the handling of varargs in ml-nlffigen again:
1041    The ellipsis ... will now simply be ignored (with an accompanying warning).
1042    
1043    The immediate effect is that you can actually call a varargs function
1044    from ML -- but you can't actually supply any arguments beyond the ones
1045    specified explicitly.  (For example, you can call printf with its format
1046    string, but you cannot pass additional arguments.)
1047    
1048    This behavior is only marginally more useful than the one before, but
1049    it has the advantage that a function or, more importantly, a function
1050    type never gets dropped on the floor, thus avoiding follow-up problems with
1051    other types that refer to the offending one.
1052    
1053    ----------------------------------------------------------------------
1054    Name: Matthias Blume
1055    Date: 2001/07/09 11:25:00 EDT
1056    Tag: blume-20010709-varargs
1057    Description:
1058    
1059    1. ckit-lib.cm now exports structure Error
1060    2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
1061       with a warning accompanied by a source location.  Moreover, it
1062       merely skips the offending function or type and proceeds with the
1063       rest of its work.u  As a result, one can safely feed C code containing
1064       "..." to ml-nlffigen.
1065    3. There are some internal improvements to CM, providing slightly
1066       more general string substitutions in the tools subsystem.
1067    
1068    ----------------------------------------------------------------------
1069    Name: Matthias Blume
1070    Date: 2001/06/27 15:10:00 EDT
1071    Tag: blume-20010627-concur
1072    Description:
1073    
1074    Fixed a small bug in CM's handling of parallel compilation.
1075    (You could observe the bug by Control-C-interrupting an ordinary
1076    CMB.make or CM.stabilize and then attaching some compile servers.
1077    The result was that all of a sudden the previously interrupted
1078    compilation would continue on its own.  This was because of
1079    an over-optimization: CM did not bother to clean out certain queues
1080    when no servers were attached "anyway", resulting in the contents
1081    of these queues to grab control when new servers did get attached.)
1082    
1083    There is also another minor update to the CM manual.
1084    
1085    ----------------------------------------------------------------------
1086    Name: Matthias Blume
1087    Date: 2001/06/26 16:15:00 EDT
1088    Tag: blume-20010626-cmdoc
1089    Description:
1090    
1091    Minor typo fixed in CM manual (syntax diagram for libraries).
1092    
1093    ----------------------------------------------------------------------
1094    Name: Matthias Blume
1095    Date: 2001/06/25 22:55:00 EDT
1096    Tag: blume-20010625-x86pc
1097    Description:
1098    
1099    Fixed a nasty bug in the X86 assembly code that caused signal
1100    handlers to fail (crash) randomly.
1101    
1102    ----------------------------------------------------------------------
1103    Name: Matthias Blume
1104    Date: 2001/06/25 12:05:00 EDT
1105    Tag: blume-20010625-nlffigen
1106    Description:
1107    
1108    This update fixes a number of minor bugs in ml-nlffigen as reported by
1109    Nick Carter <nbc@andrew.cmu.edu>.
1110    
1111      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
1112      2. Default names for generated files are now derived from the name of
1113         the C file *without its directory*.  In particular, this causes generated
1114         files to be placed locally even if the C file is in some system directory.
1115      3. Default names for generated signatures and structures are also derived
1116         from the C file name without its directory.  This avoids silly things
1117         like "structure GL/GL".
1118         (Other silly names are still possible because ml-nlffigen does not do
1119          a thorough check of whether generated names are legal ML identifiers.
1120          When in doubt, use command line arguments to force particular names.)
1121    
1122    ----------------------------------------------------------------------
1123    Name: Matthias Blume
1124    Date: 2001/06/21 12:25:00 EDT
1125    Tag: blume-20010621-eXene
1126    Description:
1127    
1128    eXene now compiles and (sort of) works again.
1129    
1130    The library name (for version > 110.33) is $/eXene.cm.
1131    
1132    I also added an new example in src/eXene/examples/nbody.  See the
1133    README file there for details.
1134    
1135    ----------------------------------------------------------------------
1136    Name: Matthias Blume
1137    Date: 2001/06/20 16:40:00 EDT
1138    Tag: blume-20010620-cml
1139    Description:
1140    
1141    CML now compiles and works again.
1142    
1143    Libraries (for version > 110.33):
1144    
1145      $cml/cml.cm            Main CML library.
1146      $cml/basis.cm          CML's version of $/basis.cm.
1147      $cml/cml-internal.cm   Internal helper library.
1148      $cml/core-cml.cm       Internal helper library.
1149      $cml-lib/trace-cml.cm  Tracing facility.
1150      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
1151    
1152    The installer (config/install.sh) has been taught how to properly
1153    install this stuff.
1154    
1155    ----------------------------------------------------------------------
1156    Name: Matthias Blume
1157    Date: 2001/06/19 17:55:00 EDT
1158    Tag: blume-20010619-instantiate
1159    Description:
1160    
1161    This un-breaks the fix for bug 1432.
1162    (The bug was originally fixed in 110.9 but I broke it again some
1163    time after that.)
1164    
1165    ----------------------------------------------------------------------
1166    Name: Matthias Blume
1167    Date: 2001/06/19 17:25:00 EDT
1168    Tag: blume-20010619-signals
1169    Description:
1170    
1171    This should (hopefully) fix the long-standing signal handling bug.
1172    (The runtime system was constructing a continuation record with an
1173    incorrect descriptor which would cause the GC to drop data on the floor...)
1174    
1175    ----------------------------------------------------------------------
1176    Name: Matthias Blume
1177    Date: 2001/06/15 15:05:00 EDT
1178    Tag: blume-20010615-moresparc
1179    Description:
1180    
1181    Here is a short late-hour update related to Sparc c-calls:
1182    
1183     -- made handling of double-word arguments a bit smarter
1184    
1185     -- instruction selection phase tries to collapse certain clumsily
1186        constructed ML-Trees; typical example:
1187    
1188            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
1189    
1190        This currently has no further impact on SML/NJ since mlriscGen does
1191        not seem to generate such patterns in the first place, and c-calls
1192        (which did generate them in the beginning) has meanwhile been fixed
1193        so as to avoid them as well.
1194    
1195    ----------------------------------------------------------------------
1196    Name: Matthias Blume
1197    Date: 2001/06/15 15:05:00 EDT
1198    Tag: blume-20010615-sparc
1199    Description:
1200    
1201    The purpose of this update is to provide an implementation of NLFFI
1202    on Sparc machines.
1203    
1204    Here are the changes in detail:
1205    
1206       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
1207       the Sparc implementation of the c-calls API.
1208       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
1209       for accessing the ML frame.  Thus, we have a real frame pointer and
1210       can freely modify %sp without need for an omit-frame-ptr phase.
1211       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
1212       this case.
1213       * ml-nlffigen has been taught to produce code for different architectures
1214       and calling conventions.
1215       * In a way similar to what was done in the x86 case, the Sparc
1216       backend uses its own specific extension to mltree.  (For example,
1217       it needs to be able to generate UNIMP instructions which are part
1218       of the calling convention.)
1219       * ml-nlffi-lib was reorganized to make it more modular (in particular,
1220       to make it easier to plug in new machine- and os-dependent parts).
1221    
1222    There are some other fairly unrelated bug fixes and cleanups as well:
1223    
1224       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
1225       that they properly share their libraries with existing SML/NJ libraries.
1226       * I fixed a minor cosmetic bug in CM, supressing certain spurious
1227       follow-up error messages.
1228       * Updates to CM/CMB documentation.
1229    
1230    TODO items:
1231    
1232       * MLRISC should use a different register as its asmTemp on the Sparc.
1233         (The current %o2 is a really bad choice because it is part of the
1234         calling conventions, so things might interfere in unexpected ways.)
1235    
1236    ----------------------------------------------------------------------
1237    Name: Matthias Blume
1238    Date: 2001/06/07
1239    Tag: blume-20010607-calls
1240    Description:
1241    
1242    A number of internal changes related to C calls and calling conventions:
1243    
1244    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
1245       number of bytes popped implicitly (by the callee).  In most cases
1246       this field is 0 but on x86/win32 it is some non-zero value.  This
1247       is information provided for the benefit of the "omit-frameptr" pass.
1248    2. The CALL instruction on the x86 carries a similar "pops" field.
1249       The instruction selection phase copies its value from the ML-Tree
1250       CALL statement.
1251    3. On all other architectures, the instruction selection phase checks
1252       whether "pops=0" and complains if not.
1253    4. The c-calls implementation for x86 now accepts two calling conventions:
1254       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
1255       up after the call and pops is set to 0.  For "stdcall", the caller
1256       does nothing, leaving the cleanup to the callee; pops is set to
1257       the number of bytes that were pushed onto the stack.
1258    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
1259       distinguish between "ccall" and "stdcall".
1260    6. The UNIMP instruction has been added to the supported Sparc instruction
1261       set. (This is needed for implementing the official C calling convention
1262       on this architecture.)
1263    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
1264       work with the latest CM.
1265    
1266    ----------------------------------------------------------------------
1267    Name: Matthias Blume
1268    Date: 2001/06/05 15:10:00 EDT
1269    Tag: blume-20010605-cm-index
1270    Description:
1271    
1272    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
1273    
1274    1. CM can now generate "index files".  These are human-readable files
1275       that list on a per-.cm-file basis each toplevel symbol defined or
1276       imported.  The location of the index file for
1277       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
1278       To enable index-file generation, set CM.Control.generate_index to true
1279       or export an environment-symbol: export CM_GENERATE_INDEX=true.
1280    
1281       The CM manual has been updated accordingly.
1282    
1283    2. I made some slight modifications to the c-calls API in MLRISC.
1284    
1285         a) There is now a callback to support saving/restoring of
1286            dedicated but caller-save registers around the actual call
1287            instruction.
1288         b) One can optionally specify a comment-annotation for the
1289            call instruction.
1290    
1291    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
1292       (For example, the comment annotation shows the C prototype of
1293        the function being called.)
1294    
1295    ----------------------------------------------------------------------
1296    Name: Matthias Blume
1297    Date: 2001/06/01 13:30:00 EDT
1298    Tag: blume-20010601-nlffi-cleanup
1299    Description:
1300    
1301    This is mostly a cleanup of MLFFI stuff:
1302    
1303       - some signature files have been put into a more exposed place
1304       - the ugly 'f type parameter is gone (simplifies types tremendously!)
1305       - ml-nlffigen changed accordingly
1306       - tutorial updated
1307    
1308    Other changes:
1309    
1310       - author's affiliation in CM manual(s) updated
1311       - some more recognized keywords added to Allen's sml.sty
1312    
1313    ----------------------------------------------------------------------
1314    Name: Matthias Blume
1315    Date: 2001/05/25 15:30:00 EDT
1316    Tag: blume-20010525-iptr
1317    Description:
1318    
1319      - put the official 110.33-README (as it appears on the ftp server) under
1320        CVS
1321      - fixed a small bug related to incomplete pointer types in
1322        ml-nlffigen
1323      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
1324        (it does not need the 'f type parameter)
1325    
1326    ----------------------------------------------------------------------
1327    Name: Matthias Blume
1328    Date: 2001/05/23 14:30:00 EDT
1329    Tag: Release_110_33
1330    Description:
1331    
1332    New version number (110.33).  New bootfiles.
1333    
1334    ----------------------------------------------------------------------
1335    Name: Matthias Blume
1336    Date: 2001/05/22 18:06:00 EDT
1337    Tag: blume-20010522-targets
1338    Description:
1339    
1340    Made install.sh use file config/targets.customized if it exists, falling
1341    back to config/targets if it doesn't.  This way one can have a customized
1342    version of the targets file without touching the "real thing", thus
1343    eliminating the constant fear of accidentally checking something bogus
1344    back into the CVS repository...  (File config/targets.customized must
1345    not be added to the repository!)
1346    
1347    ----------------------------------------------------------------------
1348    Name: Matthias Blume
1349    Date: 2001/05/22 16:30:00 EDT
1350    Tag: blume-20010522-minitut
1351    Description:
1352    
1353    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
1354       struct returns.
1355    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
1356       incomplete, preliminary documentation for NLFFI.
1357    
1358    ----------------------------------------------------------------------
1359    Name: Matthias Blume
1360    Date: 2001/05/14 11:30:00 EDT
1361    Tag: blume-20010514-script
1362    Description:
1363    
1364    Some bugs in install script fixed.
1365    
1366    In addition to that I also made a slight change to the NLFFI API:
1367    Functors generated by ml-nlffigen now take the dynamic library as a
1368    straight functor argument, not as a suspended one.  (The original
1369    functor code used to force the suspension right away anyway, so there
1370    was nothing gained by this complication of the interface.)
1371    
1372    ----------------------------------------------------------------------
1373    Name: Matthias Blume
1374    Date: 2001/05/11 14:35:00 EDT
1375    Tag: blume-20010511-ml-nlffi
1376    Description:
1377    
1378    I finally took the plunge and added my new FFI code to the main
1379    repository.  For x86-linux it is now ready for prime-time.
1380    
1381    There are two new subdirectories of "src":
1382    
1383      - ml-nlffi-lib:
1384           The utility library for programs using the FFI interface.
1385           Here is the implementation of $/c.cm and its associated low-level
1386           partners $/c-int.cm and $/memory.cm.
1387      - ml-nlffigen:
1388           A stand-alone program for generating ML glue code from C source
1389           code.
1390    
1391    Building ml-nlffigen requires $/ckit-lib.cm.
1392    
1393    The config/install.sh script has been updates to do the Right Thing
1394    (hopefully).
1395    
1396    Notice that the source tree for the C-Kit will not be put under "src"
1397    but directly under the installation root directory.  (This is the
1398    structure that currently exists on the CVS server when you check out
1399    module "sml".)  Fortunately, config/install.sh knows about this oddity.
1400    
1401    Bugs: No documentation yet.
1402    
1403    ----------------------------------------------------------------------
1404    Name: Matthias Blume
1405    Date: 2001/05/09 16:35:00 EDT
1406    Tag: blume-20010509-cpscontract
1407    Description:
1408    
1409    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
1410    wrapper/unwrapper elimination did not decrement usage counts and some
1411    dead variables got overlooked by the dead-up logic.)
1412    
1413    ----------------------------------------------------------------------
1414  Name: Lal George  Name: Lal George
1415  Date: 2001/05/08  17:26:09 EDT  Date: 2001/05/08  17:26:09 EDT
1416  Tag: george-20010508-omit-frameptr  Tag: george-20010508-omit-frameptr
# Line 2191  Line 3589 
3589       elaborator). There were a lot of changes during my "linkpath" trials       elaborator). There were a lot of changes during my "linkpath" trials
3590       that could have been reverted to their original state but weren't.       that could have been reverted to their original state but weren't.
3591       Please, don't be too harsh on me for messing with this code a bit more       Please, don't be too harsh on me for messing with this code a bit more
3592       than what was strictly necessary...  (I _did_ resist the tempation       than what was strictly necessary...  (I _did_ resist the temptation
3593       of doing any "global reformatting" to avoid an untimely death at       of doing any "global reformatting" to avoid an untimely death at
3594       Dave's hands. :)       Dave's hands. :)
3595    

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