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revision 808, Wed Apr 18 15:43:09 2001 UTC revision 845, Thu Jun 21 16:25:49 2001 UTC
# Line 14  Line 14 
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16  Name: Matthias Blume  Name: Matthias Blume
17    Date: 2001/06/21 12:25:00 EDT
18    Tag: blume-20010621-eXene
19    Description:
20    
21    eXene now compiles and (sort of) works again.
22    
23    The library name (for version > 110.33) is $/eXene.cm.
24    
25    I also added an new example in src/eXene/examples/nbody.  See the
26    README file there for details.
27    
28    ----------------------------------------------------------------------
29    Name: Matthias Blume
30    Date: 2001/06/20 16:40:00 EDT
31    Tag: blume-20010620-cml
32    Description:
33    
34    CML now compiles and works again.
35    
36    Libraries (for version > 110.33):
37    
38      $cml/cml.cm            Main CML library.
39      $cml/basis.cm          CML's version of $/basis.cm.
40      $cml/cml-internal.cm   Internal helper library.
41      $cml/core-cml.cm       Internal helper library.
42      $cml-lib/trace-cml.cm  Tracing facility.
43      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
44    
45    The installer (config/install.sh) has been taught how to properly
46    install this stuff.
47    
48    ----------------------------------------------------------------------
49    Name: Matthias Blume
50    Date: 2001/06/19 17:55:00 EDT
51    Tag: blume-20010619-instantiate
52    Description:
53    
54    This un-breaks the fix for bug 1432.
55    (The bug was originally fixed in 110.9 but I broke it again some
56    time after that.)
57    
58    ----------------------------------------------------------------------
59    Name: Matthias Blume
60    Date: 2001/06/19 17:25:00 EDT
61    Tag: blume-20010619-signals
62    Description:
63    
64    This should (hopefully) fix the long-standing signal handling bug.
65    (The runtime system was constructing a continuation record with an
66    incorrect descriptor which would cause the GC to drop data on the floor...)
67    
68    ----------------------------------------------------------------------
69    Name: Matthias Blume
70    Date: 2001/06/15 15:05:00 EDT
71    Tag: blume-20010615-moresparc
72    Description:
73    
74    Here is a short late-hour update related to Sparc c-calls:
75    
76     -- made handling of double-word arguments a bit smarter
77    
78     -- instruction selection phase tries to collapse certain clumsily
79        constructed ML-Trees; typical example:
80    
81            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
82    
83        This currently has no further impact on SML/NJ since mlriscGen does
84        not seem to generate such patterns in the first place, and c-calls
85        (which did generate them in the beginning) has meanwhile been fixed
86        so as to avoid them as well.
87    
88    ----------------------------------------------------------------------
89    Name: Matthias Blume
90    Date: 2001/06/15 15:05:00 EDT
91    Tag: blume-20010615-sparc
92    Description:
93    
94    The purpose of this update is to provide an implementation of NLFFI
95    on Sparc machines.
96    
97    Here are the changes in detail:
98    
99       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
100       the Sparc implementation of the c-calls API.
101       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
102       for accessing the ML frame.  Thus, we have a real frame pointer and
103       can freely modify %sp without need for an omit-frame-ptr phase.
104       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
105       this case.
106       * ml-nlffigen has been taught to produce code for different architectures
107       and calling conventions.
108       * In a way similar to what was done in the x86 case, the Sparc
109       backend uses its own specific extension to mltree.  (For example,
110       it needs to be able to generate UNIMP instructions which are part
111       of the calling convention.)
112       * ml-nlffi-lib was reorganized to make it more modular (in particular,
113       to make it easier to plug in new machine- and os-dependent parts).
114    
115    There are some other fairly unrelated bug fixes and cleanups as well:
116    
117       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
118       that they properly share their libraries with existing SML/NJ libraries.
119       * I fixed a minor cosmetic bug in CM, supressing certain spurious
120       follow-up error messages.
121       * Updates to CM/CMB documentation.
122    
123    TODO items:
124    
125       * MLRISC should use a different register as its asmTemp on the Sparc.
126         (The current %o2 is a really bad choice because it is part of the
127         calling conventions, so things might interfere in unexpected ways.)
128    
129    ----------------------------------------------------------------------
130    Name: Matthias Blume
131    Date: 2001/06/07
132    Tag: blume-20010607-calls
133    Description:
134    
135    A number of internal changes related to C calls and calling conventions:
136    
137    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
138       number of bytes popped implicitly (by the callee).  In most cases
139       this field is 0 but on x86/win32 it is some non-zero value.  This
140       is information provided for the benefit of the "omit-frameptr" pass.
141    2. The CALL instruction on the x86 carries a similar "pops" field.
142       The instruction selection phase copies its value from the ML-Tree
143       CALL statement.
144    3. On all other architectures, the instruction selection phase checks
145       whether "pops=0" and complains if not.
146    4. The c-calls implementation for x86 now accepts two calling conventions:
147       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
148       up after the call and pops is set to 0.  For "stdcall", the caller
149       does nothing, leaving the cleanup to the callee; pops is set to
150       the number of bytes that were pushed onto the stack.
151    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
152       distinguish between "ccall" and "stdcall".
153    6. The UNIMP instruction has been added to the supported Sparc instruction
154       set. (This is needed for implementing the official C calling convention
155       on this architecture.)
156    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
157       work with the latest CM.
158    
159    ----------------------------------------------------------------------
160    Name: Matthias Blume
161    Date: 2001/06/05 15:10:00 EDT
162    Tag: blume-20010605-cm-index
163    Description:
164    
165    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
166    
167    1. CM can now generate "index files".  These are human-readable files
168       that list on a per-.cm-file basis each toplevel symbol defined or
169       imported.  The location of the index file for
170       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
171       To enable index-file generation, set CM.Control.generate_index to true
172       or export an environment-symbol: export CM_GENERATE_INDEX=true.
173    
174       The CM manual has been updated accordingly.
175    
176    2. I made some slight modifications to the c-calls API in MLRISC.
177    
178         a) There is now a callback to support saving/restoring of
179            dedicated but caller-save registers around the actual call
180            instruction.
181         b) One can optionally specify a comment-annotation for the
182            call instruction.
183    
184    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
185       (For example, the comment annotation shows the C prototype of
186        the function being called.)
187    
188    ----------------------------------------------------------------------
189    Name: Matthias Blume
190    Date: 2001/06/01 13:30:00 EDT
191    Tag: blume-20010601-nlffi-cleanup
192    Description:
193    
194    This is mostly a cleanup of MLFFI stuff:
195    
196       - some signature files have been put into a more exposed place
197       - the ugly 'f type parameter is gone (simplifies types tremendously!)
198       - ml-nlffigen changed accordingly
199       - tutorial updated
200    
201    Other changes:
202    
203       - author's affiliation in CM manual(s) updated
204       - some more recognized keywords added to Allen's sml.sty
205    
206    ----------------------------------------------------------------------
207    Name: Matthias Blume
208    Date: 2001/05/25 15:30:00 EDT
209    Tag: blume-20010525-iptr
210    Description:
211    
212      - put the official 110.33-README (as it appears on the ftp server) under
213        CVS
214      - fixed a small bug related to incomplete pointer types in
215        ml-nlffigen
216      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
217        (it does not need the 'f type parameter)
218    
219    ----------------------------------------------------------------------
220    Name: Matthias Blume
221    Date: 2001/05/23 14:30:00 EDT
222    Tag: Release_110_33
223    Description:
224    
225    New version number (110.33).  New bootfiles.
226    
227    ----------------------------------------------------------------------
228    Name: Matthias Blume
229    Date: 2001/05/22 18:06:00 EDT
230    Tag: blume-20010522-targets
231    Description:
232    
233    Made install.sh use file config/targets.customized if it exists, falling
234    back to config/targets if it doesn't.  This way one can have a customized
235    version of the targets file without touching the "real thing", thus
236    eliminating the constant fear of accidentally checking something bogus
237    back into the CVS repository...  (File config/targets.customized must
238    not be added to the repository!)
239    
240    ----------------------------------------------------------------------
241    Name: Matthias Blume
242    Date: 2001/05/22 16:30:00 EDT
243    Tag: blume-20010522-minitut
244    Description:
245    
246    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
247       struct returns.
248    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
249       incomplete, preliminary documentation for NLFFI.
250    
251    ----------------------------------------------------------------------
252    Name: Matthias Blume
253    Date: 2001/05/14 11:30:00 EDT
254    Tag: blume-20010514-script
255    Description:
256    
257    Some bugs in install script fixed.
258    
259    In addition to that I also made a slight change to the NLFFI API:
260    Functors generated by ml-nlffigen now take the dynamic library as a
261    straight functor argument, not as a suspended one.  (The original
262    functor code used to force the suspension right away anyway, so there
263    was nothing gained by this complication of the interface.)
264    
265    ----------------------------------------------------------------------
266    Name: Matthias Blume
267    Date: 2001/05/11 14:35:00 EDT
268    Tag: blume-20010511-ml-nlffi
269    Description:
270    
271    I finally took the plunge and added my new FFI code to the main
272    repository.  For x86-linux it is now ready for prime-time.
273    
274    There are two new subdirectories of "src":
275    
276      - ml-nlffi-lib:
277           The utility library for programs using the FFI interface.
278           Here is the implementation of $/c.cm and its associated low-level
279           partners $/c-int.cm and $/memory.cm.
280      - ml-nlffigen:
281           A stand-alone program for generating ML glue code from C source
282           code.
283    
284    Building ml-nlffigen requires $/ckit-lib.cm.
285    
286    The config/install.sh script has been updates to do the Right Thing
287    (hopefully).
288    
289    Notice that the source tree for the C-Kit will not be put under "src"
290    but directly under the installation root directory.  (This is the
291    structure that currently exists on the CVS server when you check out
292    module "sml".)  Fortunately, config/install.sh knows about this oddity.
293    
294    Bugs: No documentation yet.
295    
296    ----------------------------------------------------------------------
297    Name: Matthias Blume
298    Date: 2001/05/09 16:35:00 EDT
299    Tag: blume-20010509-cpscontract
300    Description:
301    
302    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
303    wrapper/unwrapper elimination did not decrement usage counts and some
304    dead variables got overlooked by the dead-up logic.)
305    
306    ----------------------------------------------------------------------
307    Name: Lal George
308    Date: 2001/05/08  17:26:09 EDT
309    Tag: george-20010508-omit-frameptr
310    Description:
311    
312    Changes to implement the omit-frame-pointer optimization to support
313    raw C calls. For now, there is only support on the Intel x86, but
314    other architectures will follow as more experience is gained with this.
315    
316    
317    ----------------------------------------------------------------------
318    Name: Matthias Blume
319    Date: 2001/05/07 14:40:00 EDT
320    Tag: blume-20010507-proxies
321    Description:
322    
323    I made into "proxy libraries" all libraries that qualify for such a
324    change.  (A qualifying library is a library that has another library or
325    groups as its sole member and repeats that member's export list
326    verbatim.  A proxy library avoids this repetition by omitting its export
327    list, effectively inheriting the list that its (only) member exports.
328    See the CM manual for more explanation.)
329    The main effect is that explicit export lists for these libraries
330    do not have to be kepts in sync, making maintenance a bit easier.
331    
332    I also added copyright notices to many .cm-files.
333    
334    Last but not least, I made a new set of bootfiles.
335    
336    ----------------------------------------------------------------------
337    Name: Matthias Blume
338    Date: 2001/05/04 17:00:00 EDT
339    Tag: blume-20010504-cm-lsplit
340    Description:
341    
342    0. John merged pending changes to $/smlnj-lib.cm
343    
344    1. Allen's previous change accidentally backed out of one of Lal's
345       earlier changes.  I undid this mistake (re-introducing Lal's change).
346    
347    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
348       within the compiler where applicable.  There is some code simplification
349       because of that.
350    
351    3. The "split" phase (in FLINT) is now part of the default list of phases.
352       Compiler.Control.LambdaSplitting.* can be used to globally control the
353       lambda-splitting (cross-module-inlining) engine.  In addition to that,
354       it can now also be controlled on a per-source basis: CM has been taught
355       a new tool parameter applicable to ML source files.
356    
357       - To turn lambda-splitting off completely:
358            local open Compiler.Control.LambdaSplitting in
359                val _ = set Off
360            end
361       - To make "no lambda-splitting" the global default (but allow per-source
362         overriding); this is the initial setting:
363            local open Compiler.Control.LambdaSplitting in
364                val _ = set (Default NONE)
365            end
366       - To make "lambda-splitting with aggressiveness a" the global default
367         (and allow per-source overriding):
368            local open Compiler.Control.LambdaSplitting in
369                val _ = set (Default (SOME a))
370            end
371    
372       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
373         write (in the respective .cm-file):
374            a.sml (lambdasplitting:off)
375       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
376            a.sml (lambdasplitting:on)
377       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
378         <a> is a decimal non-negative integer):
379            a.sml (lambdasplitting:<a>)
380       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
381            a.sml (lambdasplitting:infinity)
382       - To use the global default for a.sml:
383            a.sml (lambdasplitting:default)
384         or simply
385            a.sml
386    
387    ----------------------------------------------------------------------
388    Name: Allen Leung
389    Date: 2001/05/04 01:57:00 EDT
390    Tag: leunga-20010504-sync
391    Description:
392    
393      MLRISC features.
394    
395      1. Fix to CMPXCHG instructions.
396      2. Changed RA interface to allow annotations in callbacks.
397      3. Added a new method to the stream interface to allow annotations updates.
398    
399    ----------------------------------------------------------------------
400    Name: Matthias Blume
401    Date: 2001/05/01 11:45:00 EDT
402    Tag: blume-20010501-pcedittmp
403    Description:
404    
405    Changed install.sh to use the current working directory instead of
406    /usr/tmp for a temporary file (pcedittmp).  The previous choice
407    of /usr/tmp caused trouble with MacOS X because of file premission
408    problems.
409    
410    ----------------------------------------------------------------------
411    Name: Matthias Blume
412    Date: 2001/04/20 11:10:00 EDT
413    Tag: blume-20010420-inMLflag
414    Description:
415    
416     - added vp_limitPtrMask to vproc-state.h
417       (for use by the raw-C-calls mechanism to implement proper interrupt
418        handling)
419     - made the ML compiler aware of various data-structure offsets so it
420       can generate code for accessing the vp_inML flag and vp_limitPtrMask
421     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
422       raw C-calls
423    
424    ----------------------------------------------------------------------
425    Name: Lal George
426    Date: 2001/04/20 09:15:28 EDT
427    Tag: george-20010420-macosX
428    Description:
429    
430     - Changes to port to Mac OS X; Darwin.
431    
432     - In the process I found that sqrt was broken on the PPC, because the
433       fsqrt instruction is not implemented.
434    
435    ----------------------------------------------------------------------
436    Name: Matthias Blume
437  Date: 2001/04/18 12:45:00 EDT  Date: 2001/04/18 12:45:00 EDT
438  Tag: blume-20010418-ccalls  Tag: blume-20010418-ccalls
439  Description:  Description:
# Line 29  Line 449 
449   - made makeml script's verbosity level configurable via environment   - made makeml script's verbosity level configurable via environment
450     variable (MAKEML_VERBOSITY)     variable (MAKEML_VERBOSITY)
451    
452   - eliminteded placeholder implementations for f32l, w16s, i16s, and f32s   - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
453     in rawmem-x86.sml; we are now using the real thing     in rawmem-x86.sml; we are now using the real thing
454    
455  ----------------------------------------------------------------------  ----------------------------------------------------------------------

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